X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Flibrbd%2Flibrbd.cc;fp=src%2Fceph%2Fsrc%2Flibrbd%2Flibrbd.cc;h=31889b822a6d9e3622a2004c833e3641f5ea98d3;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git diff --git a/src/ceph/src/librbd/librbd.cc b/src/ceph/src/librbd/librbd.cc new file mode 100644 index 0000000..31889b8 --- /dev/null +++ b/src/ceph/src/librbd/librbd.cc @@ -0,0 +1,4005 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2011 New Dream Network + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ +#include "include/int_types.h" + +#include + +#include "cls/rbd/cls_rbd_types.h" +#include "common/dout.h" +#include "common/errno.h" +#include "common/TracepointProvider.h" +#include "include/Context.h" + +#include "cls/rbd/cls_rbd_client.h" +#include "cls/rbd/cls_rbd_types.h" +#include "librbd/ImageCtx.h" +#include "librbd/ImageState.h" +#include "librbd/internal.h" +#include "librbd/Operations.h" +#include "librbd/api/DiffIterate.h" +#include "librbd/api/Mirror.h" +#include "librbd/io/AioCompletion.h" +#include "librbd/io/ImageRequestWQ.h" +#include "librbd/io/ReadResult.h" +#include +#include +#include + +#ifdef WITH_LTTNG +#define TRACEPOINT_DEFINE +#define TRACEPOINT_PROBE_DYNAMIC_LINKAGE +#include "tracing/librbd.h" +#undef TRACEPOINT_PROBE_DYNAMIC_LINKAGE +#undef TRACEPOINT_DEFINE +#else +#define tracepoint(...) +#endif + +#define dout_subsys ceph_subsys_rbd +#undef dout_prefix +#define dout_prefix *_dout << "librbd: " + +using std::string; +using std::vector; + +using ceph::bufferlist; +using librados::snap_t; +using librados::IoCtx; + +namespace { + +TracepointProvider::Traits tracepoint_traits("librbd_tp.so", "rbd_tracing"); + +buffer::raw* create_write_raw(librbd::ImageCtx *ictx, const char *buf, + size_t len) { + // TODO: until librados can guarantee memory won't be referenced after + // it ACKs a request, always make a copy of the user-provided memory + return buffer::copy(buf, len); +} + +CephContext* get_cct(IoCtx &io_ctx) { + return reinterpret_cast(io_ctx.cct()); +} + +librbd::io::AioCompletion* get_aio_completion(librbd::RBD::AioCompletion *comp) { + return reinterpret_cast(comp->pc); +} + +struct C_AioCompletion : public Context { + CephContext *cct; + librbd::io::aio_type_t aio_type; + librbd::io::AioCompletion* aio_comp; + + C_AioCompletion(librbd::ImageCtx *ictx, librbd::io::aio_type_t aio_type, + librbd::io::AioCompletion* aio_comp) + : cct(ictx->cct), aio_type(aio_type), aio_comp(aio_comp) { + aio_comp->init_time(ictx, aio_type); + aio_comp->get(); + } + + void finish(int r) override { + ldout(cct, 20) << "C_AioComplete::finish: r=" << r << dendl; + if (r < 0) { + aio_comp->fail(r); + } else { + aio_comp->lock.Lock(); + aio_comp->complete(); + aio_comp->put_unlock(); + } + } +}; + +struct C_OpenComplete : public C_AioCompletion { + librbd::ImageCtx *ictx; + void **ictxp; + C_OpenComplete(librbd::ImageCtx *ictx, librbd::io::AioCompletion* comp, + void **ictxp) + : C_AioCompletion(ictx, librbd::io::AIO_TYPE_OPEN, comp), + ictx(ictx), ictxp(ictxp) { + } + void finish(int r) override { + ldout(ictx->cct, 20) << "C_OpenComplete::finish: r=" << r << dendl; + if (r < 0) { + *ictxp = nullptr; + } else { + *ictxp = ictx; + } + + C_AioCompletion::finish(r); + } +}; + +struct C_OpenAfterCloseComplete : public Context { + librbd::ImageCtx *ictx; + librbd::io::AioCompletion* comp; + void **ictxp; + C_OpenAfterCloseComplete(librbd::ImageCtx *ictx, + librbd::io::AioCompletion* comp, + void **ictxp) + : ictx(ictx), comp(comp), ictxp(ictxp) { + } + void finish(int r) override { + ldout(ictx->cct, 20) << "C_OpenAfterCloseComplete::finish: r=" << r + << dendl; + delete reinterpret_cast(*ictxp); + *ictxp = nullptr; + + ictx->state->open(false, new C_OpenComplete(ictx, comp, ictxp)); + } +}; + +struct C_UpdateWatchCB : public librbd::UpdateWatchCtx { + rbd_update_callback_t watch_cb; + void *arg; + uint64_t handle = 0; + + C_UpdateWatchCB(rbd_update_callback_t watch_cb, void *arg) : + watch_cb(watch_cb), arg(arg) { + } + void handle_notify() override { + watch_cb(arg); + } +}; + +void mirror_image_info_cpp_to_c(const librbd::mirror_image_info_t &cpp_info, + rbd_mirror_image_info_t *c_info) { + c_info->global_id = strdup(cpp_info.global_id.c_str()); + c_info->state = cpp_info.state; + c_info->primary = cpp_info.primary; +} + +void mirror_image_status_cpp_to_c(const librbd::mirror_image_status_t &cpp_status, + rbd_mirror_image_status_t *c_status) { + c_status->name = strdup(cpp_status.name.c_str()); + mirror_image_info_cpp_to_c(cpp_status.info, &c_status->info); + c_status->state = cpp_status.state; + c_status->description = strdup(cpp_status.description.c_str()); + c_status->last_update = cpp_status.last_update; + c_status->up = cpp_status.up; +} + +void trash_image_info_cpp_to_c(const librbd::trash_image_info_t &cpp_info, + rbd_trash_image_info_t *c_info) { + c_info->id = strdup(cpp_info.id.c_str()); + c_info->name = strdup(cpp_info.name.c_str()); + c_info->source = cpp_info.source; + c_info->deletion_time = cpp_info.deletion_time; + c_info->deferment_end_time = cpp_info.deferment_end_time; +} + +struct C_MirrorImageGetInfo : public Context { + rbd_mirror_image_info_t *mirror_image_info; + Context *on_finish; + + librbd::mirror_image_info_t cpp_mirror_image_info; + + C_MirrorImageGetInfo(rbd_mirror_image_info_t *mirror_image_info, + Context *on_finish) + : mirror_image_info(mirror_image_info), on_finish(on_finish) { + } + + void finish(int r) override { + if (r < 0) { + on_finish->complete(r); + return; + } + + mirror_image_info_cpp_to_c(cpp_mirror_image_info, mirror_image_info); + on_finish->complete(0); + } +}; + +struct C_MirrorImageGetStatus : public Context { + rbd_mirror_image_status_t *mirror_image_status; + Context *on_finish; + + librbd::mirror_image_status_t cpp_mirror_image_status; + + C_MirrorImageGetStatus(rbd_mirror_image_status_t *mirror_image_status, + Context *on_finish) + : mirror_image_status(mirror_image_status), on_finish(on_finish) { + } + + void finish(int r) override { + if (r < 0) { + on_finish->complete(r); + return; + } + + mirror_image_status_cpp_to_c(cpp_mirror_image_status, mirror_image_status); + on_finish->complete(0); + } +}; + +} // anonymous namespace + +namespace librbd { + ProgressContext::~ProgressContext() + { + } + + class CProgressContext : public ProgressContext + { + public: + CProgressContext(librbd_progress_fn_t fn, void *data) + : m_fn(fn), m_data(data) + { + } + int update_progress(uint64_t offset, uint64_t src_size) override + { + return m_fn(offset, src_size, m_data); + } + private: + librbd_progress_fn_t m_fn; + void *m_data; + }; + + /* + RBD + */ + RBD::RBD() + { + } + + RBD::~RBD() + { + } + + void RBD::version(int *major, int *minor, int *extra) + { + rbd_version(major, minor, extra); + } + + int RBD::open(IoCtx& io_ctx, Image& image, const char *name) + { + return open(io_ctx, image, name, NULL); + } + + int RBD::open_by_id(IoCtx& io_ctx, Image& image, const char *id) + { + return open_by_id(io_ctx, image, id, nullptr); + } + + int RBD::open(IoCtx& io_ctx, Image& image, const char *name, + const char *snap_name) + { + ImageCtx *ictx = new ImageCtx(name, "", snap_name, io_ctx, false); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only); + + if (image.ctx != NULL) { + reinterpret_cast(image.ctx)->state->close(); + image.ctx = NULL; + } + + int r = ictx->state->open(false); + if (r < 0) { + tracepoint(librbd, open_image_exit, r); + return r; + } + + image.ctx = (image_ctx_t) ictx; + tracepoint(librbd, open_image_exit, 0); + return 0; + } + + int RBD::open_by_id(IoCtx& io_ctx, Image& image, const char *id, + const char *snap_name) + { + ImageCtx *ictx = new ImageCtx("", id, snap_name, io_ctx, false); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, open_image_by_id_enter, ictx, ictx->id.c_str(), + ictx->snap_name.c_str(), ictx->read_only); + + if (image.ctx != nullptr) { + reinterpret_cast(image.ctx)->state->close(); + image.ctx = nullptr; + } + + int r = ictx->state->open(false); + if (r < 0) { + tracepoint(librbd, open_image_by_id_exit, r); + return r; + } + + image.ctx = (image_ctx_t) ictx; + tracepoint(librbd, open_image_by_id_exit, 0); + return 0; + } + + int RBD::aio_open(IoCtx& io_ctx, Image& image, const char *name, + const char *snap_name, RBD::AioCompletion *c) + { + ImageCtx *ictx = new ImageCtx(name, "", snap_name, io_ctx, false); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, aio_open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only, c->pc); + + if (image.ctx != NULL) { + reinterpret_cast(image.ctx)->state->close( + new C_OpenAfterCloseComplete(ictx, get_aio_completion(c), &image.ctx)); + } else { + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(c), + &image.ctx)); + } + tracepoint(librbd, aio_open_image_exit, 0); + return 0; + } + + int RBD::aio_open_by_id(IoCtx& io_ctx, Image& image, const char *id, + const char *snap_name, RBD::AioCompletion *c) + { + ImageCtx *ictx = new ImageCtx("", id, snap_name, io_ctx, false); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, aio_open_image_by_id_enter, ictx, ictx->id.c_str(), + ictx->snap_name.c_str(), ictx->read_only, c->pc); + + if (image.ctx != nullptr) { + reinterpret_cast(image.ctx)->state->close( + new C_OpenAfterCloseComplete(ictx, get_aio_completion(c), &image.ctx)); + } else { + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(c), + &image.ctx)); + } + tracepoint(librbd, aio_open_image_by_id_exit, 0); + return 0; + } + + int RBD::open_read_only(IoCtx& io_ctx, Image& image, const char *name, + const char *snap_name) + { + ImageCtx *ictx = new ImageCtx(name, "", snap_name, io_ctx, true); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only); + + if (image.ctx != NULL) { + reinterpret_cast(image.ctx)->state->close(); + image.ctx = NULL; + } + + int r = ictx->state->open(false); + if (r < 0) { + tracepoint(librbd, open_image_exit, r); + return r; + } + + image.ctx = (image_ctx_t) ictx; + tracepoint(librbd, open_image_exit, 0); + return 0; + } + + int RBD::open_by_id_read_only(IoCtx& io_ctx, Image& image, const char *id, + const char *snap_name) + { + ImageCtx *ictx = new ImageCtx("", id, snap_name, io_ctx, true); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, open_image_by_id_enter, ictx, ictx->id.c_str(), + ictx->snap_name.c_str(), ictx->read_only); + + if (image.ctx != nullptr) { + reinterpret_cast(image.ctx)->state->close(); + image.ctx = nullptr; + } + + int r = ictx->state->open(false); + if (r < 0) { + tracepoint(librbd, open_image_by_id_exit, r); + return r; + } + + image.ctx = (image_ctx_t) ictx; + tracepoint(librbd, open_image_by_id_exit, 0); + return 0; + } + + int RBD::aio_open_read_only(IoCtx& io_ctx, Image& image, const char *name, + const char *snap_name, RBD::AioCompletion *c) + { + ImageCtx *ictx = new ImageCtx(name, "", snap_name, io_ctx, true); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, aio_open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only, c->pc); + + if (image.ctx != NULL) { + reinterpret_cast(image.ctx)->state->close( + new C_OpenAfterCloseComplete(ictx, get_aio_completion(c), &image.ctx)); + } else { + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(c), + &image.ctx)); + } + tracepoint(librbd, aio_open_image_exit, 0); + return 0; + } + + int RBD::aio_open_by_id_read_only(IoCtx& io_ctx, Image& image, const char *id, + const char *snap_name, RBD::AioCompletion *c) + { + ImageCtx *ictx = new ImageCtx("", id, snap_name, io_ctx, true); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, aio_open_image_by_id_enter, ictx, ictx->id.c_str(), + ictx->snap_name.c_str(), ictx->read_only, c->pc); + + if (image.ctx != nullptr) { + reinterpret_cast(image.ctx)->state->close( + new C_OpenAfterCloseComplete(ictx, get_aio_completion(c), &image.ctx)); + } else { + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(c), + &image.ctx)); + } + tracepoint(librbd, aio_open_image_by_id_exit, 0); + return 0; + } + + int RBD::create(IoCtx& io_ctx, const char *name, uint64_t size, int *order) + { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, *order); + int r = librbd::create(io_ctx, name, size, order); + tracepoint(librbd, create_exit, r, *order); + return r; + } + + int RBD::create2(IoCtx& io_ctx, const char *name, uint64_t size, + uint64_t features, int *order) + { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create2_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, features, *order); + int r = librbd::create(io_ctx, name, size, false, features, order, 0, 0); + tracepoint(librbd, create2_exit, r, *order); + return r; + } + + int RBD::create3(IoCtx& io_ctx, const char *name, uint64_t size, + uint64_t features, int *order, uint64_t stripe_unit, + uint64_t stripe_count) + { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create3_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, features, *order, stripe_unit, stripe_count); + int r = librbd::create(io_ctx, name, size, false, features, order, + stripe_unit, stripe_count); + tracepoint(librbd, create3_exit, r, *order); + return r; + } + + int RBD::create4(IoCtx& io_ctx, const char *name, uint64_t size, + ImageOptions& opts) + { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create4_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, opts.opts); + int r = librbd::create(io_ctx, name, "", size, opts, "", "", false); + tracepoint(librbd, create4_exit, r); + return r; + } + + int RBD::clone(IoCtx& p_ioctx, const char *p_name, const char *p_snap_name, + IoCtx& c_ioctx, const char *c_name, uint64_t features, + int *c_order) + { + TracepointProvider::initialize(get_cct(p_ioctx)); + tracepoint(librbd, clone_enter, p_ioctx.get_pool_name().c_str(), p_ioctx.get_id(), p_name, p_snap_name, c_ioctx.get_pool_name().c_str(), c_ioctx.get_id(), c_name, features); + int r = librbd::clone(p_ioctx, p_name, p_snap_name, c_ioctx, c_name, + features, c_order, 0, 0); + tracepoint(librbd, clone_exit, r, *c_order); + return r; + } + + int RBD::clone2(IoCtx& p_ioctx, const char *p_name, const char *p_snap_name, + IoCtx& c_ioctx, const char *c_name, uint64_t features, + int *c_order, uint64_t stripe_unit, int stripe_count) + { + TracepointProvider::initialize(get_cct(p_ioctx)); + tracepoint(librbd, clone2_enter, p_ioctx.get_pool_name().c_str(), p_ioctx.get_id(), p_name, p_snap_name, c_ioctx.get_pool_name().c_str(), c_ioctx.get_id(), c_name, features, stripe_unit, stripe_count); + int r = librbd::clone(p_ioctx, p_name, p_snap_name, c_ioctx, c_name, + features, c_order, stripe_unit, stripe_count); + tracepoint(librbd, clone2_exit, r, *c_order); + return r; + } + + int RBD::clone3(IoCtx& p_ioctx, const char *p_name, const char *p_snap_name, + IoCtx& c_ioctx, const char *c_name, ImageOptions& c_opts) + { + TracepointProvider::initialize(get_cct(p_ioctx)); + tracepoint(librbd, clone3_enter, p_ioctx.get_pool_name().c_str(), p_ioctx.get_id(), p_name, p_snap_name, c_ioctx.get_pool_name().c_str(), c_ioctx.get_id(), c_name, c_opts.opts); + int r = librbd::clone(p_ioctx, p_name, p_snap_name, c_ioctx, c_name, + c_opts); + tracepoint(librbd, clone3_exit, r); + return r; + } + + int RBD::remove(IoCtx& io_ctx, const char *name) + { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, remove_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::remove(io_ctx, name, "", prog_ctx); + tracepoint(librbd, remove_exit, r); + return r; + } + + int RBD::remove_with_progress(IoCtx& io_ctx, const char *name, + ProgressContext& pctx) + { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, remove_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name); + int r = librbd::remove(io_ctx, name, "", pctx); + tracepoint(librbd, remove_exit, r); + return r; + } + + int RBD::trash_move(IoCtx &io_ctx, const char *name, uint64_t delay) { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_move_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), name); + int r = librbd::trash_move(io_ctx, RBD_TRASH_IMAGE_SOURCE_USER, name, + delay); + tracepoint(librbd, trash_move_exit, r); + return r; + } + + int RBD::trash_get(IoCtx &io_ctx, const char *id, trash_image_info_t *info) { + return librbd::trash_get(io_ctx, id, info); + } + + int RBD::trash_list(IoCtx &io_ctx, vector &entries) { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_list_enter, + io_ctx.get_pool_name().c_str(), io_ctx.get_id()); + int r = librbd::trash_list(io_ctx, entries); +#ifdef WITH_LTTNG + if (r >= 0) { + for (const auto& entry : entries) { + tracepoint(librbd, trash_list_entry, entry.id.c_str()); + } + } +#endif + tracepoint(librbd, trash_list_exit, r, r); + return r; + } + + int RBD::trash_remove(IoCtx &io_ctx, const char *image_id, bool force) { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_remove_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), image_id, force); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::trash_remove(io_ctx, image_id, force, prog_ctx); + tracepoint(librbd, trash_remove_exit, r); + return r; + } + + int RBD::trash_remove_with_progress(IoCtx &io_ctx, const char *image_id, + bool force, ProgressContext &pctx) { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_remove_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), image_id, force); + int r = librbd::trash_remove(io_ctx, image_id, force, pctx); + tracepoint(librbd, trash_remove_exit, r); + return r; + } + + int RBD::trash_restore(IoCtx &io_ctx, const char *id, const char *name) { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_undelete_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), id, name); + int r = librbd::trash_restore(io_ctx, id, name); + tracepoint(librbd, trash_undelete_exit, r); + return r; + } + + int RBD::list(IoCtx& io_ctx, vector& names) + { + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, list_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id()); + int r = librbd::list(io_ctx, names); + if (r >= 0) { + for (vector::iterator itr = names.begin(), end = names.end(); itr != end; ++itr) { + tracepoint(librbd, list_entry, itr->c_str()); + } + } + tracepoint(librbd, list_exit, r, r); + return r; + } + + int RBD::rename(IoCtx& src_io_ctx, const char *srcname, const char *destname) + { + TracepointProvider::initialize(get_cct(src_io_ctx)); + tracepoint(librbd, rename_enter, src_io_ctx.get_pool_name().c_str(), src_io_ctx.get_id(), srcname, destname); + int r = librbd::rename(src_io_ctx, srcname, destname); + tracepoint(librbd, rename_exit, r); + return r; + } + + int RBD::mirror_mode_get(IoCtx& io_ctx, rbd_mirror_mode_t *mirror_mode) { + return librbd::api::Mirror<>::mode_get(io_ctx, mirror_mode); + } + + int RBD::mirror_mode_set(IoCtx& io_ctx, rbd_mirror_mode_t mirror_mode) { + return librbd::api::Mirror<>::mode_set(io_ctx, mirror_mode); + } + + int RBD::mirror_peer_add(IoCtx& io_ctx, std::string *uuid, + const std::string &cluster_name, + const std::string &client_name) { + return librbd::api::Mirror<>::peer_add(io_ctx, uuid, cluster_name, + client_name); + } + + int RBD::mirror_peer_remove(IoCtx& io_ctx, const std::string &uuid) { + return librbd::api::Mirror<>::peer_remove(io_ctx, uuid); + } + + int RBD::mirror_peer_list(IoCtx& io_ctx, std::vector *peers) { + return librbd::api::Mirror<>::peer_list(io_ctx, peers); + } + + int RBD::mirror_peer_set_client(IoCtx& io_ctx, const std::string &uuid, + const std::string &client_name) { + return librbd::api::Mirror<>::peer_set_client(io_ctx, uuid, client_name); + } + + int RBD::mirror_peer_set_cluster(IoCtx& io_ctx, const std::string &uuid, + const std::string &cluster_name) { + return librbd::api::Mirror<>::peer_set_cluster(io_ctx, uuid, cluster_name); + } + + int RBD::mirror_image_status_list(IoCtx& io_ctx, const std::string &start_id, + size_t max, std::map *images) { + return librbd::api::Mirror<>::image_status_list(io_ctx, start_id, max, + images); + } + + int RBD::mirror_image_status_summary(IoCtx& io_ctx, + std::map *states) { + return librbd::api::Mirror<>::image_status_summary(io_ctx, states); + } + + RBD::AioCompletion::AioCompletion(void *cb_arg, callback_t complete_cb) + { + pc = reinterpret_cast(librbd::io::AioCompletion::create( + cb_arg, complete_cb, this)); + } + + bool RBD::AioCompletion::is_complete() + { + librbd::io::AioCompletion *c = (librbd::io::AioCompletion *)pc; + return c->is_complete(); + } + + int RBD::AioCompletion::wait_for_complete() + { + librbd::io::AioCompletion *c = (librbd::io::AioCompletion *)pc; + return c->wait_for_complete(); + } + + ssize_t RBD::AioCompletion::get_return_value() + { + librbd::io::AioCompletion *c = (librbd::io::AioCompletion *)pc; + return c->get_return_value(); + } + + void *RBD::AioCompletion::get_arg() + { + librbd::io::AioCompletion *c = (librbd::io::AioCompletion *)pc; + return c->get_arg(); + } + + void RBD::AioCompletion::release() + { + librbd::io::AioCompletion *c = (librbd::io::AioCompletion *)pc; + c->release(); + delete this; + } + + /* + ImageOptions + */ + + ImageOptions::ImageOptions() + { + librbd::image_options_create(&opts); + } + + ImageOptions::ImageOptions(rbd_image_options_t opts_) + { + librbd::image_options_create_ref(&opts, opts_); + } + + ImageOptions::ImageOptions(const ImageOptions &imgopts) + { + librbd::image_options_copy(&opts, imgopts); + } + + ImageOptions::~ImageOptions() + { + librbd::image_options_destroy(opts); + } + + int ImageOptions::set(int optname, const std::string& optval) + { + return librbd::image_options_set(opts, optname, optval); + } + + int ImageOptions::set(int optname, uint64_t optval) + { + return librbd::image_options_set(opts, optname, optval); + } + + int ImageOptions::get(int optname, std::string* optval) const + { + return librbd::image_options_get(opts, optname, optval); + } + + int ImageOptions::get(int optname, uint64_t* optval) const + { + return librbd::image_options_get(opts, optname, optval); + } + + int ImageOptions::is_set(int optname, bool* is_set) + { + return librbd::image_options_is_set(opts, optname, is_set); + } + + int ImageOptions::unset(int optname) + { + return librbd::image_options_unset(opts, optname); + } + + void ImageOptions::clear() + { + librbd::image_options_clear(opts); + } + + bool ImageOptions::empty() const + { + return librbd::image_options_is_empty(opts); + } + + /* + Image + */ + + Image::Image() : ctx(NULL) + { + } + + Image::~Image() + { + close(); + } + + int Image::close() + { + int r = 0; + if (ctx) { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, close_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str()); + + r = ictx->state->close(); + ctx = NULL; + + tracepoint(librbd, close_image_exit, r); + } + return r; + } + + int Image::aio_close(RBD::AioCompletion *c) + { + if (!ctx) { + return -EINVAL; + } + + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_close_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), c->pc); + + ictx->state->close(new C_AioCompletion(ictx, librbd::io::AIO_TYPE_CLOSE, + get_aio_completion(c))); + ctx = NULL; + + tracepoint(librbd, aio_close_image_exit, 0); + return 0; + } + + int Image::resize(uint64_t size) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, resize_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, size); + librbd::NoOpProgressContext prog_ctx; + int r = ictx->operations->resize(size, true, prog_ctx); + tracepoint(librbd, resize_exit, r); + return r; + } + + int Image::resize2(uint64_t size, bool allow_shrink, librbd::ProgressContext& pctx) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, resize_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, size); + int r = ictx->operations->resize(size, allow_shrink, pctx); + tracepoint(librbd, resize_exit, r); + return r; + } + + int Image::resize_with_progress(uint64_t size, librbd::ProgressContext& pctx) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, resize_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, size); + int r = ictx->operations->resize(size, true, pctx); + tracepoint(librbd, resize_exit, r); + return r; + } + + int Image::stat(image_info_t& info, size_t infosize) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, stat_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::info(ictx, info, infosize); + tracepoint(librbd, stat_exit, r, &info); + return r; + } + + int Image::old_format(uint8_t *old) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_old_format_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_old_format(ictx, old); + tracepoint(librbd, get_old_format_exit, r, *old); + return r; + } + + int Image::size(uint64_t *size) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_size_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_size(ictx, size); + tracepoint(librbd, get_size_exit, r, *size); + return r; + } + + int Image::features(uint64_t *features) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_features_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_features(ictx, features); + tracepoint(librbd, get_features_exit, r, *features); + return r; + } + + int Image::update_features(uint64_t features, bool enabled) + { + ImageCtx *ictx = reinterpret_cast(ctx); + tracepoint(librbd, update_features_enter, ictx, features, enabled); + int r = ictx->operations->update_features(features, enabled); + tracepoint(librbd, update_features_exit, r); + return r; + } + + uint64_t Image::get_stripe_unit() const + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_stripe_unit_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + uint64_t stripe_unit = ictx->get_stripe_unit(); + tracepoint(librbd, get_stripe_unit_exit, 0, stripe_unit); + return stripe_unit; + } + + uint64_t Image::get_stripe_count() const + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_stripe_count_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + uint64_t stripe_count = ictx->get_stripe_count(); + tracepoint(librbd, get_stripe_count_exit, 0, stripe_count); + return stripe_count; + } + + int Image::get_create_timestamp(struct timespec *timestamp) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_create_timestamp_enter, ictx, ictx->name.c_str(), + ictx->read_only); + utime_t time = ictx->get_create_timestamp(); + time.to_timespec(timestamp); + tracepoint(librbd, get_create_timestamp_exit, 0, timestamp); + return 0; + } + + int Image::overlap(uint64_t *overlap) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_overlap_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_overlap(ictx, overlap); + tracepoint(librbd, get_overlap_exit, r, *overlap); + return r; + } + + int Image::get_id(std::string *id) + { + ImageCtx *ictx = reinterpret_cast(ctx); + if (ictx->old_format) { + return -EINVAL; + } + *id = ictx->id; + return 0; + } + + std::string Image::get_block_name_prefix() + { + ImageCtx *ictx = reinterpret_cast(ctx); + return ictx->object_prefix; + } + + int64_t Image::get_data_pool_id() + { + ImageCtx *ictx = reinterpret_cast(ctx); + return ictx->data_ctx.get_id(); + } + + int Image::parent_info(string *parent_pool_name, string *parent_name, + string *parent_snap_name) + { + return parent_info2(parent_pool_name, parent_name, nullptr, + parent_snap_name); + } + + int Image::parent_info2(string *parent_pool_name, string *parent_name, + string *parent_id, string *parent_snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_parent_info_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_parent_info(ictx, parent_pool_name, parent_name, + parent_id, parent_snap_name); + tracepoint(librbd, get_parent_info_exit, r, + parent_pool_name ? parent_pool_name->c_str() : NULL, + parent_name ? parent_name->c_str() : NULL, + parent_id ? parent_id->c_str() : NULL, + parent_snap_name ? parent_snap_name->c_str() : NULL); + return r; + } + + int Image::get_flags(uint64_t *flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, get_flags_enter, ictx); + int r = librbd::get_flags(ictx, flags); + tracepoint(librbd, get_flags_exit, ictx, r, *flags); + return r; + } + + int Image::set_image_notification(int fd, int type) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, set_image_notification_enter, ictx, fd, type); + int r = librbd::set_image_notification(ictx, fd, type); + tracepoint(librbd, set_image_notification_exit, ictx, r); + return r; + } + + int Image::is_exclusive_lock_owner(bool *is_owner) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, is_exclusive_lock_owner_enter, ictx); + int r = librbd::is_exclusive_lock_owner(ictx, is_owner); + tracepoint(librbd, is_exclusive_lock_owner_exit, ictx, r, *is_owner); + return r; + } + + int Image::lock_acquire(rbd_lock_mode_t lock_mode) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, lock_acquire_enter, ictx, lock_mode); + int r = librbd::lock_acquire(ictx, lock_mode); + tracepoint(librbd, lock_acquire_exit, ictx, r); + return r; + } + + int Image::lock_release() + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, lock_release_enter, ictx); + int r = librbd::lock_release(ictx); + tracepoint(librbd, lock_release_exit, ictx, r); + return r; + } + + int Image::lock_get_owners(rbd_lock_mode_t *lock_mode, + std::list *lock_owners) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, lock_get_owners_enter, ictx); + int r = librbd::lock_get_owners(ictx, lock_mode, lock_owners); + tracepoint(librbd, lock_get_owners_exit, ictx, r); + return r; + } + + int Image::lock_break(rbd_lock_mode_t lock_mode, + const std::string &lock_owner) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, lock_break_enter, ictx, lock_mode, lock_owner.c_str()); + int r = librbd::lock_break(ictx, lock_mode, lock_owner); + tracepoint(librbd, lock_break_exit, ictx, r); + return r; + } + + int Image::rebuild_object_map(ProgressContext &prog_ctx) + { + ImageCtx *ictx = reinterpret_cast(ctx); + return ictx->operations->rebuild_object_map(prog_ctx); + } + + int Image::check_object_map(ProgressContext &prog_ctx) + { + ImageCtx *ictx = reinterpret_cast(ctx); + return ictx->operations->check_object_map(prog_ctx); + } + + int Image::copy(IoCtx& dest_io_ctx, const char *destname) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, copy_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname); + ImageOptions opts; + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(ictx, dest_io_ctx, destname, opts, prog_ctx, 0); + tracepoint(librbd, copy_exit, r); + return r; + } + + int Image::copy2(Image& dest) + { + ImageCtx *srcctx = (ImageCtx *)ctx; + ImageCtx *destctx = (ImageCtx *)dest.ctx; + tracepoint(librbd, copy2_enter, srcctx, srcctx->name.c_str(), srcctx->snap_name.c_str(), srcctx->read_only, destctx, destctx->name.c_str(), destctx->snap_name.c_str(), destctx->read_only); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(srcctx, destctx, prog_ctx, 0); + tracepoint(librbd, copy2_exit, r); + return r; + } + + int Image::copy3(IoCtx& dest_io_ctx, const char *destname, ImageOptions& opts) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, copy3_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, opts.opts); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(ictx, dest_io_ctx, destname, opts, prog_ctx, 0); + tracepoint(librbd, copy3_exit, r); + return r; + } + + int Image::copy4(IoCtx& dest_io_ctx, const char *destname, ImageOptions& opts, size_t sparse_size) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, copy4_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, opts.opts, sparse_size); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(ictx, dest_io_ctx, destname, opts, prog_ctx, sparse_size); + tracepoint(librbd, copy4_exit, r); + return r; + } + + int Image::copy_with_progress(IoCtx& dest_io_ctx, const char *destname, + librbd::ProgressContext &pctx) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, copy_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname); + ImageOptions opts; + int r = librbd::copy(ictx, dest_io_ctx, destname, opts, pctx, 0); + tracepoint(librbd, copy_exit, r); + return r; + } + + int Image::copy_with_progress2(Image& dest, librbd::ProgressContext &pctx) + { + ImageCtx *srcctx = (ImageCtx *)ctx; + ImageCtx *destctx = (ImageCtx *)dest.ctx; + tracepoint(librbd, copy2_enter, srcctx, srcctx->name.c_str(), srcctx->snap_name.c_str(), srcctx->read_only, destctx, destctx->name.c_str(), destctx->snap_name.c_str(), destctx->read_only); + int r = librbd::copy(srcctx, destctx, pctx, 0); + tracepoint(librbd, copy2_exit, r); + return r; + } + + int Image::copy_with_progress3(IoCtx& dest_io_ctx, const char *destname, + ImageOptions& opts, + librbd::ProgressContext &pctx) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, copy3_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, opts.opts); + int r = librbd::copy(ictx, dest_io_ctx, destname, opts, pctx, 0); + tracepoint(librbd, copy3_exit, r); + return r; + } + + int Image::copy_with_progress4(IoCtx& dest_io_ctx, const char *destname, + ImageOptions& opts, + librbd::ProgressContext &pctx, + size_t sparse_size) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, copy4_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, opts.opts, sparse_size); + int r = librbd::copy(ictx, dest_io_ctx, destname, opts, pctx, sparse_size); + tracepoint(librbd, copy4_exit, r); + return r; + } + + int Image::flatten() + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, flatten_enter, ictx, ictx->name.c_str(), ictx->id.c_str()); + librbd::NoOpProgressContext prog_ctx; + int r = ictx->operations->flatten(prog_ctx); + tracepoint(librbd, flatten_exit, r); + return r; + } + + int Image::flatten_with_progress(librbd::ProgressContext& prog_ctx) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, flatten_enter, ictx, ictx->name.c_str(), ictx->id.c_str()); + int r = ictx->operations->flatten(prog_ctx); + tracepoint(librbd, flatten_exit, r); + return r; + } + + int Image::list_children(set > *children) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, list_children_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::list_children(ictx, *children); + if (r >= 0) { + for (set >::const_iterator it = children->begin(); + it != children->end(); ++it) { + tracepoint(librbd, list_children_entry, it->first.c_str(), it->second.c_str()); + } + } + tracepoint(librbd, list_children_exit, r); + return r; + } + + int Image::list_lockers(std::list *lockers, + bool *exclusive, string *tag) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, list_lockers_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::list_lockers(ictx, lockers, exclusive, tag); + if (r >= 0) { + for (std::list::const_iterator it = lockers->begin(); + it != lockers->end(); ++it) { + tracepoint(librbd, list_lockers_entry, it->client.c_str(), it->cookie.c_str(), it->address.c_str()); + } + } + tracepoint(librbd, list_lockers_exit, r); + return r; + } + + int Image::lock_exclusive(const string& cookie) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, lock_exclusive_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, cookie.c_str()); + int r = librbd::lock(ictx, true, cookie, ""); + tracepoint(librbd, lock_exclusive_exit, r); + return r; + } + + int Image::lock_shared(const string& cookie, const std::string& tag) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, lock_shared_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, cookie.c_str(), tag.c_str()); + int r = librbd::lock(ictx, false, cookie, tag); + tracepoint(librbd, lock_shared_exit, r); + return r; + } + + int Image::unlock(const string& cookie) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, unlock_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, cookie.c_str()); + int r = librbd::unlock(ictx, cookie); + tracepoint(librbd, unlock_exit, r); + return r; + } + + int Image::break_lock(const string& client, const string& cookie) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, break_lock_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, client.c_str(), cookie.c_str()); + int r = librbd::break_lock(ictx, client, cookie); + tracepoint(librbd, break_lock_exit, r); + return r; + } + + int Image::snap_create(const char *snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_create_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = ictx->operations->snap_create(cls::rbd::UserSnapshotNamespace(), + snap_name); + tracepoint(librbd, snap_create_exit, r); + return r; + } + + int Image::snap_remove(const char *snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_remove_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::snap_remove(ictx, snap_name, 0, prog_ctx); + tracepoint(librbd, snap_remove_exit, r); + return r; + } + + int Image::snap_remove2(const char *snap_name, uint32_t flags, ProgressContext& pctx) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_remove2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name, flags); + int r = librbd::snap_remove(ictx, snap_name, flags, pctx); + tracepoint(librbd, snap_remove_exit, r); + return r; + } + + int Image::snap_rollback(const char *snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_rollback_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + librbd::NoOpProgressContext prog_ctx; + int r = ictx->operations->snap_rollback(cls::rbd::UserSnapshotNamespace(), snap_name, prog_ctx); + tracepoint(librbd, snap_rollback_exit, r); + return r; + } + + int Image::snap_rename(const char *srcname, const char *dstname) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_rename_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, srcname, dstname); + int r = ictx->operations->snap_rename(srcname, dstname); + tracepoint(librbd, snap_rename_exit, r); + return r; + } + + int Image::snap_rollback_with_progress(const char *snap_name, + ProgressContext& prog_ctx) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_rollback_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = ictx->operations->snap_rollback(cls::rbd::UserSnapshotNamespace(), snap_name, prog_ctx); + tracepoint(librbd, snap_rollback_exit, r); + return r; + } + + int Image::snap_protect(const char *snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_protect_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = ictx->operations->snap_protect(cls::rbd::UserSnapshotNamespace(), snap_name); + tracepoint(librbd, snap_protect_exit, r); + return r; + } + + int Image::snap_unprotect(const char *snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_unprotect_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = ictx->operations->snap_unprotect(cls::rbd::UserSnapshotNamespace(), snap_name); + tracepoint(librbd, snap_unprotect_exit, r); + return r; + } + + int Image::snap_is_protected(const char *snap_name, bool *is_protected) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_is_protected_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = librbd::snap_is_protected(ictx, snap_name, is_protected); + tracepoint(librbd, snap_is_protected_exit, r, *is_protected ? 1 : 0); + return r; + } + + int Image::snap_list(vector& snaps) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_list_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, &snaps); + int r = librbd::snap_list(ictx, snaps); + if (r >= 0) { + for (int i = 0, n = snaps.size(); i < n; i++) { + tracepoint(librbd, snap_list_entry, snaps[i].id, snaps[i].size, snaps[i].name.c_str()); + } + } + tracepoint(librbd, snap_list_exit, r, snaps.size()); + if (r >= 0) { + // A little ugly, but the C++ API doesn't need a Image::snap_list_end, + // and we want the tracepoints to mirror the C API + tracepoint(librbd, snap_list_end_enter, &snaps); + tracepoint(librbd, snap_list_end_exit); + } + return r; + } + + bool Image::snap_exists(const char *snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_exists_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, snap_name); + bool exists; + int r = librbd::snap_exists(ictx, cls::rbd::UserSnapshotNamespace(), snap_name, &exists); + tracepoint(librbd, snap_exists_exit, r, exists); + if (r < 0) { + // lie to caller since we don't know the real answer yet. + return false; + } + return exists; + } + + // A safer verion of snap_exists. + int Image::snap_exists2(const char *snap_name, bool *exists) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_exists_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = librbd::snap_exists(ictx, cls::rbd::UserSnapshotNamespace(), snap_name, exists); + tracepoint(librbd, snap_exists_exit, r, *exists); + return r; + } + + int Image::snap_get_timestamp(uint64_t snap_id, struct timespec *timestamp) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_get_timestamp_enter, ictx, ictx->name.c_str()); + int r = librbd::snap_get_timestamp(ictx, snap_id, timestamp); + tracepoint(librbd, snap_get_timestamp_exit, r); + return r; + } + + int Image::snap_get_limit(uint64_t *limit) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_get_limit_enter, ictx, ictx->name.c_str()); + int r = librbd::snap_get_limit(ictx, limit); + tracepoint(librbd, snap_get_limit_exit, r, *limit); + return r; + } + + int Image::snap_set_limit(uint64_t limit) + { + ImageCtx *ictx = (ImageCtx *)ctx; + + tracepoint(librbd, snap_set_limit_enter, ictx, ictx->name.c_str(), limit); + int r = ictx->operations->snap_set_limit(limit); + tracepoint(librbd, snap_set_limit_exit, r); + return r; + } + + int Image::snap_set(const char *snap_name) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, snap_set_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = librbd::snap_set(ictx, cls::rbd::UserSnapshotNamespace(), snap_name); + tracepoint(librbd, snap_set_exit, r); + return r; + } + + ssize_t Image::read(uint64_t ofs, size_t len, bufferlist& bl) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, read_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + bufferptr ptr(len); + bl.push_back(std::move(ptr)); + int r = ictx->io_work_queue->read(ofs, len, io::ReadResult{&bl}, 0); + tracepoint(librbd, read_exit, r); + return r; + } + + ssize_t Image::read2(uint64_t ofs, size_t len, bufferlist& bl, int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, read2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, ofs, len, op_flags); + bufferptr ptr(len); + bl.push_back(std::move(ptr)); + int r = ictx->io_work_queue->read(ofs, len, io::ReadResult{&bl}, op_flags); + tracepoint(librbd, read_exit, r); + return r; + } + + int64_t Image::read_iterate(uint64_t ofs, size_t len, + int (*cb)(uint64_t, size_t, const char *, void *), + void *arg) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, read_iterate_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + int64_t r = librbd::read_iterate(ictx, ofs, len, cb, arg); + tracepoint(librbd, read_iterate_exit, r); + return r; + } + + int Image::read_iterate2(uint64_t ofs, uint64_t len, + int (*cb)(uint64_t, size_t, const char *, void *), + void *arg) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, read_iterate2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + int64_t r = librbd::read_iterate(ictx, ofs, len, cb, arg); + if (r > 0) + r = 0; + tracepoint(librbd, read_iterate2_exit, r); + return (int)r; + } + + int Image::diff_iterate(const char *fromsnapname, + uint64_t ofs, uint64_t len, + int (*cb)(uint64_t, size_t, int, void *), + void *arg) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, diff_iterate_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, fromsnapname, ofs, len, + true, false); + int r = librbd::api::DiffIterate<>::diff_iterate(ictx, + cls::rbd::UserSnapshotNamespace(), + fromsnapname, ofs, + len, true, false, cb, arg); + tracepoint(librbd, diff_iterate_exit, r); + return r; + } + + int Image::diff_iterate2(const char *fromsnapname, uint64_t ofs, uint64_t len, + bool include_parent, bool whole_object, + int (*cb)(uint64_t, size_t, int, void *), void *arg) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, diff_iterate_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, fromsnapname, ofs, len, + include_parent, whole_object); + int r = librbd::api::DiffIterate<>::diff_iterate(ictx, + cls::rbd::UserSnapshotNamespace(), + fromsnapname, ofs, + len, include_parent, + whole_object, cb, arg); + tracepoint(librbd, diff_iterate_exit, r); + return r; + } + + ssize_t Image::write(uint64_t ofs, size_t len, bufferlist& bl) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, write_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len, bl.length() < len ? NULL : bl.c_str()); + if (bl.length() < len) { + tracepoint(librbd, write_exit, -EINVAL); + return -EINVAL; + } + int r = ictx->io_work_queue->write(ofs, len, bufferlist{bl}, 0); + tracepoint(librbd, write_exit, r); + return r; + } + + ssize_t Image::write2(uint64_t ofs, size_t len, bufferlist& bl, int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, write2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, + ofs, len, bl.length() < len ? NULL : bl.c_str(), op_flags); + if (bl.length() < len) { + tracepoint(librbd, write_exit, -EINVAL); + return -EINVAL; + } + int r = ictx->io_work_queue->write(ofs, len, bufferlist{bl}, op_flags); + tracepoint(librbd, write_exit, r); + return r; + } + + int Image::discard(uint64_t ofs, uint64_t len) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, discard_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + if (len > std::numeric_limits::max()) { + tracepoint(librbd, discard_exit, -EINVAL); + return -EINVAL; + } + int r = ictx->io_work_queue->discard(ofs, len, ictx->skip_partial_discard); + tracepoint(librbd, discard_exit, r); + return r; + } + + ssize_t Image::writesame(uint64_t ofs, size_t len, bufferlist& bl, int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, writesame_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, ofs, len, bl.length() <= 0 ? NULL : bl.c_str(), bl.length(), + op_flags); + if (bl.length() <= 0 || len % bl.length()) { + tracepoint(librbd, writesame_exit, -EINVAL); + return -EINVAL; + } + + if (mem_is_zero(bl.c_str(), bl.length())) { + int r = ictx->io_work_queue->discard(ofs, len, false); + tracepoint(librbd, writesame_exit, r); + return r; + } + + int r = ictx->io_work_queue->writesame(ofs, len, bufferlist{bl}, op_flags); + tracepoint(librbd, writesame_exit, r); + return r; + } + + ssize_t Image::compare_and_write(uint64_t ofs, size_t len, + ceph::bufferlist &cmp_bl, ceph::bufferlist& bl, + uint64_t *mismatch_off, int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, compare_and_write_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), + ictx->read_only, ofs, len, cmp_bl.length() < len ? NULL : cmp_bl.c_str(), + bl.length() < len ? NULL : bl.c_str(), op_flags); + + if (bl.length() < len) { + tracepoint(librbd, write_exit, -EINVAL); + return -EINVAL; + } + + int r = ictx->io_work_queue->compare_and_write(ofs, len, bufferlist{cmp_bl}, + bufferlist{bl}, mismatch_off, + op_flags); + + tracepoint(librbd, compare_and_write_exit, r); + + return r; + } + int Image::aio_write(uint64_t off, size_t len, bufferlist& bl, + RBD::AioCompletion *c) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_write_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, off, len, bl.length() < len ? NULL : bl.c_str(), c->pc); + if (bl.length() < len) { + tracepoint(librbd, aio_write_exit, -EINVAL); + return -EINVAL; + } + ictx->io_work_queue->aio_write(get_aio_completion(c), off, len, + bufferlist{bl}, 0); + tracepoint(librbd, aio_write_exit, 0); + return 0; + } + + int Image::aio_write2(uint64_t off, size_t len, bufferlist& bl, + RBD::AioCompletion *c, int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_write2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, off, len, bl.length() < len ? NULL : bl.c_str(), c->pc, op_flags); + if (bl.length() < len) { + tracepoint(librbd, aio_write_exit, -EINVAL); + return -EINVAL; + } + ictx->io_work_queue->aio_write(get_aio_completion(c), off, len, + bufferlist{bl}, op_flags); + tracepoint(librbd, aio_write_exit, 0); + return 0; + } + + int Image::aio_discard(uint64_t off, uint64_t len, RBD::AioCompletion *c) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_discard_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, off, len, c->pc); + ictx->io_work_queue->aio_discard(get_aio_completion(c), off, len, ictx->skip_partial_discard); + tracepoint(librbd, aio_discard_exit, 0); + return 0; + } + + int Image::aio_read(uint64_t off, size_t len, bufferlist& bl, + RBD::AioCompletion *c) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_read_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, off, len, bl.c_str(), c->pc); + ldout(ictx->cct, 10) << "Image::aio_read() buf=" << (void *)bl.c_str() << "~" + << (void *)(bl.c_str() + len - 1) << dendl; + ictx->io_work_queue->aio_read(get_aio_completion(c), off, len, + io::ReadResult{&bl}, 0); + tracepoint(librbd, aio_read_exit, 0); + return 0; + } + + int Image::aio_read2(uint64_t off, size_t len, bufferlist& bl, + RBD::AioCompletion *c, int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_read2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, off, len, bl.c_str(), c->pc, op_flags); + ldout(ictx->cct, 10) << "Image::aio_read() buf=" << (void *)bl.c_str() << "~" + << (void *)(bl.c_str() + len - 1) << dendl; + ictx->io_work_queue->aio_read(get_aio_completion(c), off, len, + io::ReadResult{&bl}, op_flags); + tracepoint(librbd, aio_read_exit, 0); + return 0; + } + + int Image::flush() + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, flush_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::flush(ictx); + tracepoint(librbd, flush_exit, r); + return r; + } + + int Image::aio_flush(RBD::AioCompletion *c) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_flush_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, c->pc); + ictx->io_work_queue->aio_flush(get_aio_completion(c)); + tracepoint(librbd, aio_flush_exit, 0); + return 0; + } + + int Image::aio_writesame(uint64_t off, size_t len, bufferlist& bl, + RBD::AioCompletion *c, int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_writesame_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, off, len, bl.length() <= len ? NULL : bl.c_str(), bl.length(), + c->pc, op_flags); + if (bl.length() <= 0 || len % bl.length()) { + tracepoint(librbd, aio_writesame_exit, -EINVAL); + return -EINVAL; + } + + if (mem_is_zero(bl.c_str(), bl.length())) { + ictx->io_work_queue->aio_discard(get_aio_completion(c), off, len, false); + tracepoint(librbd, aio_writesame_exit, 0); + return 0; + } + + ictx->io_work_queue->aio_writesame(get_aio_completion(c), off, len, + bufferlist{bl}, op_flags); + tracepoint(librbd, aio_writesame_exit, 0); + return 0; + } + + int Image::aio_compare_and_write(uint64_t off, size_t len, + ceph::bufferlist& cmp_bl, ceph::bufferlist& bl, + RBD::AioCompletion *c, uint64_t *mismatch_off, + int op_flags) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, aio_compare_and_write_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), + ictx->read_only, off, len, cmp_bl.length() < len ? NULL : cmp_bl.c_str(), + bl.length() < len ? NULL : bl.c_str(), c->pc, op_flags); + + if (bl.length() < len) { + tracepoint(librbd, compare_and_write_exit, -EINVAL); + return -EINVAL; + } + + ictx->io_work_queue->aio_compare_and_write(get_aio_completion(c), off, len, + bufferlist{cmp_bl}, bufferlist{bl}, + mismatch_off, op_flags, false); + + tracepoint(librbd, aio_compare_and_write_exit, 0); + + return 0; + } + + int Image::invalidate_cache() + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, invalidate_cache_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::invalidate_cache(ictx); + tracepoint(librbd, invalidate_cache_exit, r); + return r; + } + + int Image::poll_io_events(RBD::AioCompletion **comps, int numcomp) + { + io::AioCompletion *cs[numcomp]; + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, poll_io_events_enter, ictx, numcomp); + int r = librbd::poll_io_events(ictx, cs, numcomp); + tracepoint(librbd, poll_io_events_exit, r); + if (r > 0) { + for (int i = 0; i < numcomp; ++i) + comps[i] = (RBD::AioCompletion *)cs[i]->rbd_comp; + } + return r; + } + + int Image::metadata_get(const std::string &key, std::string *value) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, metadata_get_enter, ictx, key.c_str()); + int r = librbd::metadata_get(ictx, key, value); + if (r < 0) { + tracepoint(librbd, metadata_get_exit, r, key.c_str(), NULL); + } else { + tracepoint(librbd, metadata_get_exit, r, key.c_str(), value->c_str()); + } + return r; + } + + int Image::metadata_set(const std::string &key, const std::string &value) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, metadata_set_enter, ictx, key.c_str(), value.c_str()); + int r = ictx->operations->metadata_set(key, value); + tracepoint(librbd, metadata_set_exit, r); + return r; + } + + int Image::metadata_remove(const std::string &key) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, metadata_remove_enter, ictx, key.c_str()); + int r = ictx->operations->metadata_remove(key); + tracepoint(librbd, metadata_remove_exit, r); + return r; + } + + int Image::metadata_list(const std::string &start, uint64_t max, map *pairs) + { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, metadata_list_enter, ictx); + int r = librbd::metadata_list(ictx, start, max, pairs); + if (r >= 0) { + for (map::iterator it = pairs->begin(); + it != pairs->end(); ++it) { + tracepoint(librbd, metadata_list_entry, it->first.c_str(), it->second.c_str()); + } + } + tracepoint(librbd, metadata_list_exit, r); + return r; + } + + int Image::mirror_image_enable() { + ImageCtx *ictx = (ImageCtx *)ctx; + return librbd::api::Mirror<>::image_enable(ictx, false); + } + + int Image::mirror_image_disable(bool force) { + ImageCtx *ictx = (ImageCtx *)ctx; + return librbd::api::Mirror<>::image_disable(ictx, force); + } + + int Image::mirror_image_promote(bool force) { + ImageCtx *ictx = (ImageCtx *)ctx; + return librbd::api::Mirror<>::image_promote(ictx, force); + } + + int Image::mirror_image_demote() { + ImageCtx *ictx = (ImageCtx *)ctx; + return librbd::api::Mirror<>::image_demote(ictx); + } + + int Image::mirror_image_resync() + { + ImageCtx *ictx = (ImageCtx *)ctx; + return librbd::api::Mirror<>::image_resync(ictx); + } + + int Image::mirror_image_get_info(mirror_image_info_t *mirror_image_info, + size_t info_size) { + ImageCtx *ictx = (ImageCtx *)ctx; + return librbd::api::Mirror<>::image_get_info(ictx, mirror_image_info, + info_size); + } + + int Image::mirror_image_get_status(mirror_image_status_t *mirror_image_status, + size_t status_size) { + ImageCtx *ictx = (ImageCtx *)ctx; + return librbd::api::Mirror<>::image_get_status(ictx, mirror_image_status, + status_size); + } + + int Image::aio_mirror_image_promote(bool force, RBD::AioCompletion *c) { + ImageCtx *ictx = (ImageCtx *)ctx; + librbd::api::Mirror<>::image_promote( + ictx, force, new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(c))); + return 0; + } + + int Image::aio_mirror_image_demote(RBD::AioCompletion *c) { + ImageCtx *ictx = (ImageCtx *)ctx; + librbd::api::Mirror<>::image_demote( + ictx, new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(c))); + return 0; + } + + int Image::aio_mirror_image_get_info(mirror_image_info_t *mirror_image_info, + size_t info_size, + RBD::AioCompletion *c) { + ImageCtx *ictx = (ImageCtx *)ctx; + librbd::api::Mirror<>::image_get_info( + ictx, mirror_image_info, info_size, + new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(c))); + return 0; + } + + int Image::aio_mirror_image_get_status(mirror_image_status_t *status, + size_t status_size, + RBD::AioCompletion *c) { + ImageCtx *ictx = (ImageCtx *)ctx; + librbd::api::Mirror<>::image_get_status( + ictx, status, status_size, + new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(c))); + return 0; + } + + int Image::update_watch(UpdateWatchCtx *wctx, uint64_t *handle) { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, update_watch_enter, ictx, wctx); + int r = ictx->state->register_update_watcher(wctx, handle); + tracepoint(librbd, update_watch_exit, r, *handle); + return r; + } + + int Image::update_unwatch(uint64_t handle) { + ImageCtx *ictx = (ImageCtx *)ctx; + tracepoint(librbd, update_unwatch_enter, ictx, handle); + int r = ictx->state->unregister_update_watcher(handle); + tracepoint(librbd, update_unwatch_exit, r); + return r; + } + +} // namespace librbd + +extern "C" void rbd_version(int *major, int *minor, int *extra) +{ + if (major) + *major = LIBRBD_VER_MAJOR; + if (minor) + *minor = LIBRBD_VER_MINOR; + if (extra) + *extra = LIBRBD_VER_EXTRA; +} + +extern "C" void rbd_image_options_create(rbd_image_options_t* opts) +{ + librbd::image_options_create(opts); +} + +extern "C" void rbd_image_options_destroy(rbd_image_options_t opts) +{ + librbd::image_options_destroy(opts); +} + +extern "C" int rbd_image_options_set_string(rbd_image_options_t opts, int optname, + const char* optval) +{ + return librbd::image_options_set(opts, optname, optval); +} + +extern "C" int rbd_image_options_set_uint64(rbd_image_options_t opts, int optname, + uint64_t optval) +{ + return librbd::image_options_set(opts, optname, optval); +} + +extern "C" int rbd_image_options_get_string(rbd_image_options_t opts, int optname, + char* optval, size_t maxlen) +{ + std::string optval_; + + int r = librbd::image_options_get(opts, optname, &optval_); + + if (r < 0) { + return r; + } + + if (optval_.size() >= maxlen) { + return -E2BIG; + } + + strncpy(optval, optval_.c_str(), maxlen); + + return 0; +} + +extern "C" int rbd_image_options_get_uint64(rbd_image_options_t opts, int optname, + uint64_t* optval) +{ + return librbd::image_options_get(opts, optname, optval); +} + +extern "C" int rbd_image_options_is_set(rbd_image_options_t opts, int optname, + bool* is_set) +{ + return librbd::image_options_is_set(opts, optname, is_set); +} + +extern "C" int rbd_image_options_unset(rbd_image_options_t opts, int optname) +{ + return librbd::image_options_unset(opts, optname); +} + +extern "C" void rbd_image_options_clear(rbd_image_options_t opts) +{ + librbd::image_options_clear(opts); +} + +extern "C" int rbd_image_options_is_empty(rbd_image_options_t opts) +{ + return librbd::image_options_is_empty(opts); +} + +/* pool mirroring */ +extern "C" int rbd_mirror_mode_get(rados_ioctx_t p, + rbd_mirror_mode_t *mirror_mode) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + return librbd::api::Mirror<>::mode_get(io_ctx, mirror_mode); +} + +extern "C" int rbd_mirror_mode_set(rados_ioctx_t p, + rbd_mirror_mode_t mirror_mode) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + return librbd::api::Mirror<>::mode_set(io_ctx, mirror_mode); +} + +extern "C" int rbd_mirror_peer_add(rados_ioctx_t p, char *uuid, + size_t uuid_max_length, + const char *cluster_name, + const char *client_name) { + static const std::size_t UUID_LENGTH = 36; + + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + + if (uuid_max_length < UUID_LENGTH + 1) { + return -E2BIG; + } + + std::string uuid_str; + int r = librbd::api::Mirror<>::peer_add(io_ctx, &uuid_str, cluster_name, + client_name); + if (r >= 0) { + strncpy(uuid, uuid_str.c_str(), uuid_max_length); + uuid[uuid_max_length - 1] = '\0'; + } + return r; +} + +extern "C" int rbd_mirror_peer_remove(rados_ioctx_t p, const char *uuid) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + int r = librbd::api::Mirror<>::peer_remove(io_ctx, uuid); + return r; +} + +extern "C" int rbd_mirror_peer_list(rados_ioctx_t p, + rbd_mirror_peer_t *peers, int *max_peers) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + + std::vector peer_vector; + int r = librbd::api::Mirror<>::peer_list(io_ctx, &peer_vector); + if (r < 0) { + return r; + } + + if (*max_peers < static_cast(peer_vector.size())) { + *max_peers = static_cast(peer_vector.size()); + return -ERANGE; + } + + for (int i = 0; i < static_cast(peer_vector.size()); ++i) { + peers[i].uuid = strdup(peer_vector[i].uuid.c_str()); + peers[i].cluster_name = strdup(peer_vector[i].cluster_name.c_str()); + peers[i].client_name = strdup(peer_vector[i].client_name.c_str()); + } + *max_peers = static_cast(peer_vector.size()); + return 0; +} + +extern "C" void rbd_mirror_peer_list_cleanup(rbd_mirror_peer_t *peers, + int max_peers) { + for (int i = 0; i < max_peers; ++i) { + free(peers[i].uuid); + free(peers[i].cluster_name); + free(peers[i].client_name); + } +} + +extern "C" int rbd_mirror_peer_set_client(rados_ioctx_t p, const char *uuid, + const char *client_name) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + return librbd::api::Mirror<>::peer_set_client(io_ctx, uuid, client_name); +} + +extern "C" int rbd_mirror_peer_set_cluster(rados_ioctx_t p, const char *uuid, + const char *cluster_name) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + return librbd::api::Mirror<>::peer_set_cluster(io_ctx, uuid, cluster_name); +} + +extern "C" int rbd_mirror_image_status_list(rados_ioctx_t p, + const char *start_id, size_t max, char **image_ids, + rbd_mirror_image_status_t *images, size_t *len) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + std::map cpp_images; + + int r = librbd::api::Mirror<>::image_status_list(io_ctx, start_id, max, + &cpp_images); + if (r < 0) { + return r; + } + + size_t i = 0; + for (auto &it : cpp_images) { + assert(i < max); + const std::string &image_id = it.first; + image_ids[i] = strdup(image_id.c_str()); + mirror_image_status_cpp_to_c(it.second, &images[i]); + i++; + } + *len = i; + return 0; +} + +extern "C" void rbd_mirror_image_status_list_cleanup(char **image_ids, + rbd_mirror_image_status_t *images, size_t len) { + for (size_t i = 0; i < len; i++) { + free(image_ids[i]); + free(images[i].name); + free(images[i].info.global_id); + free(images[i].description); + } +} + +extern "C" int rbd_mirror_image_status_summary(rados_ioctx_t p, + rbd_mirror_image_status_state_t *states, int *counts, size_t *maxlen) { + + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + + std::map states_; + int r = librbd::api::Mirror<>::image_status_summary(io_ctx, &states_); + if (r < 0) { + return r; + } + + size_t i = 0; + for (auto &it : states_) { + if (i == *maxlen) { + return -ERANGE; + } + states[i] = it.first; + counts[i] = it.second; + i++; + } + *maxlen = i; + return 0; +} + +/* images */ +extern "C" int rbd_list(rados_ioctx_t p, char *names, size_t *size) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, list_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id()); + vector cpp_names; + int r = librbd::list(io_ctx, cpp_names); + if (r < 0) { + tracepoint(librbd, list_exit, r, *size); + return r; + } + + size_t expected_size = 0; + + for (size_t i = 0; i < cpp_names.size(); i++) { + expected_size += cpp_names[i].size() + 1; + } + if (*size < expected_size) { + *size = expected_size; + tracepoint(librbd, list_exit, -ERANGE, *size); + return -ERANGE; + } + + if (!names) + return -EINVAL; + + for (int i = 0; i < (int)cpp_names.size(); i++) { + const char* name = cpp_names[i].c_str(); + tracepoint(librbd, list_entry, name); + strcpy(names, name); + names += strlen(names) + 1; + } + tracepoint(librbd, list_exit, (int)expected_size, *size); + return (int)expected_size; +} + +extern "C" int rbd_create(rados_ioctx_t p, const char *name, uint64_t size, int *order) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, *order); + int r = librbd::create(io_ctx, name, size, order); + tracepoint(librbd, create_exit, r, *order); + return r; +} + +extern "C" int rbd_create2(rados_ioctx_t p, const char *name, + uint64_t size, uint64_t features, + int *order) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create2_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, features, *order); + int r = librbd::create(io_ctx, name, size, false, features, order, 0, 0); + tracepoint(librbd, create2_exit, r, *order); + return r; +} + +extern "C" int rbd_create3(rados_ioctx_t p, const char *name, + uint64_t size, uint64_t features, + int *order, + uint64_t stripe_unit, uint64_t stripe_count) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create3_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, features, *order, stripe_unit, stripe_count); + int r = librbd::create(io_ctx, name, size, false, features, order, + stripe_unit, stripe_count); + tracepoint(librbd, create3_exit, r, *order); + return r; +} + +extern "C" int rbd_create4(rados_ioctx_t p, const char *name, + uint64_t size, rbd_image_options_t opts) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, create4_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name, size, opts); + librbd::ImageOptions opts_(opts); + int r = librbd::create(io_ctx, name, "", size, opts_, "", "", false); + tracepoint(librbd, create4_exit, r); + return r; +} + +extern "C" int rbd_clone(rados_ioctx_t p_ioctx, const char *p_name, + const char *p_snap_name, rados_ioctx_t c_ioctx, + const char *c_name, uint64_t features, int *c_order) +{ + librados::IoCtx p_ioc, c_ioc; + librados::IoCtx::from_rados_ioctx_t(p_ioctx, p_ioc); + librados::IoCtx::from_rados_ioctx_t(c_ioctx, c_ioc); + TracepointProvider::initialize(get_cct(p_ioc)); + tracepoint(librbd, clone_enter, p_ioc.get_pool_name().c_str(), p_ioc.get_id(), p_name, p_snap_name, c_ioc.get_pool_name().c_str(), c_ioc.get_id(), c_name, features); + int r = librbd::clone(p_ioc, p_name, p_snap_name, c_ioc, c_name, + features, c_order, 0, 0); + tracepoint(librbd, clone_exit, r, *c_order); + return r; +} + +extern "C" int rbd_clone2(rados_ioctx_t p_ioctx, const char *p_name, + const char *p_snap_name, rados_ioctx_t c_ioctx, + const char *c_name, uint64_t features, int *c_order, + uint64_t stripe_unit, int stripe_count) +{ + librados::IoCtx p_ioc, c_ioc; + librados::IoCtx::from_rados_ioctx_t(p_ioctx, p_ioc); + librados::IoCtx::from_rados_ioctx_t(c_ioctx, c_ioc); + TracepointProvider::initialize(get_cct(p_ioc)); + tracepoint(librbd, clone2_enter, p_ioc.get_pool_name().c_str(), p_ioc.get_id(), p_name, p_snap_name, c_ioc.get_pool_name().c_str(), c_ioc.get_id(), c_name, features, stripe_unit, stripe_count); + int r = librbd::clone(p_ioc, p_name, p_snap_name, c_ioc, c_name, + features, c_order, stripe_unit, stripe_count); + tracepoint(librbd, clone2_exit, r, *c_order); + return r; +} + +extern "C" int rbd_clone3(rados_ioctx_t p_ioctx, const char *p_name, + const char *p_snap_name, rados_ioctx_t c_ioctx, + const char *c_name, rbd_image_options_t c_opts) +{ + librados::IoCtx p_ioc, c_ioc; + librados::IoCtx::from_rados_ioctx_t(p_ioctx, p_ioc); + librados::IoCtx::from_rados_ioctx_t(c_ioctx, c_ioc); + TracepointProvider::initialize(get_cct(p_ioc)); + tracepoint(librbd, clone3_enter, p_ioc.get_pool_name().c_str(), p_ioc.get_id(), p_name, p_snap_name, c_ioc.get_pool_name().c_str(), c_ioc.get_id(), c_name, c_opts); + librbd::ImageOptions c_opts_(c_opts); + int r = librbd::clone(p_ioc, p_name, p_snap_name, c_ioc, c_name, c_opts_); + tracepoint(librbd, clone3_exit, r); + return r; +} + +extern "C" int rbd_remove(rados_ioctx_t p, const char *name) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, remove_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::remove(io_ctx, name, "", prog_ctx); + tracepoint(librbd, remove_exit, r); + return r; +} + +extern "C" int rbd_remove_with_progress(rados_ioctx_t p, const char *name, + librbd_progress_fn_t cb, void *cbdata) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, remove_enter, io_ctx.get_pool_name().c_str(), io_ctx.get_id(), name); + librbd::CProgressContext prog_ctx(cb, cbdata); + int r = librbd::remove(io_ctx, name, "", prog_ctx); + tracepoint(librbd, remove_exit, r); + return r; +} + +extern "C" int rbd_trash_move(rados_ioctx_t p, const char *name, + uint64_t delay) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_move_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), name); + int r = librbd::trash_move(io_ctx, RBD_TRASH_IMAGE_SOURCE_USER, name, delay); + tracepoint(librbd, trash_move_exit, r); + return r; +} + +extern "C" int rbd_trash_get(rados_ioctx_t io, const char *id, + rbd_trash_image_info_t *info) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(io, io_ctx); + + librbd::trash_image_info_t cpp_info; + int r = librbd::trash_get(io_ctx, id, &cpp_info); + if (r < 0) { + return r; + } + + trash_image_info_cpp_to_c(cpp_info, info); + return 0; +} + +extern "C" void rbd_trash_get_cleanup(rbd_trash_image_info_t *info) { + free(info->id); + free(info->name); +} + +extern "C" int rbd_trash_list(rados_ioctx_t p, rbd_trash_image_info_t *entries, + size_t *num_entries) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_list_enter, + io_ctx.get_pool_name().c_str(), io_ctx.get_id()); + + vector cpp_entries; + int r = librbd::trash_list(io_ctx, cpp_entries); + if (r < 0) { + tracepoint(librbd, trash_list_exit, r, *num_entries); + return r; + } + + if (*num_entries < cpp_entries.size()) { + *num_entries = cpp_entries.size(); + tracepoint(librbd, trash_list_exit, -ERANGE, *num_entries); + return -ERANGE; + } + + int i=0; + for (const auto &entry : cpp_entries) { + trash_image_info_cpp_to_c(entry, &entries[i++]); + } + *num_entries = cpp_entries.size(); + + return *num_entries; +} + +extern "C" void rbd_trash_list_cleanup(rbd_trash_image_info_t *entries, + size_t num_entries) { + for (size_t i=0; i < num_entries; i++) { + rbd_trash_get_cleanup(&entries[i]); + } +} + +extern "C" int rbd_trash_remove(rados_ioctx_t p, const char *image_id, + bool force) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_remove_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), image_id, force); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::trash_remove(io_ctx, image_id, force, prog_ctx); + tracepoint(librbd, trash_remove_exit, r); + return r; +} + +extern "C" int rbd_trash_remove_with_progress(rados_ioctx_t p, + const char *image_id, + bool force, + librbd_progress_fn_t cb, + void *cbdata) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_remove_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), image_id, force); + librbd::CProgressContext prog_ctx(cb, cbdata); + int r = librbd::trash_remove(io_ctx, image_id, force, prog_ctx); + tracepoint(librbd, trash_remove_exit, r); + return r; +} + +extern "C" int rbd_trash_restore(rados_ioctx_t p, const char *id, + const char *name) { + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + tracepoint(librbd, trash_undelete_enter, io_ctx.get_pool_name().c_str(), + io_ctx.get_id(), id, name); + int r = librbd::trash_restore(io_ctx, id, name); + tracepoint(librbd, trash_undelete_exit, r); + return r; +} + +extern "C" int rbd_copy(rbd_image_t image, rados_ioctx_t dest_p, + const char *destname) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librados::IoCtx dest_io_ctx; + librados::IoCtx::from_rados_ioctx_t(dest_p, dest_io_ctx); + tracepoint(librbd, copy_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname); + librbd::ImageOptions opts; + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(ictx, dest_io_ctx, destname, opts, prog_ctx, 0); + tracepoint(librbd, copy_exit, r); + return r; +} + +extern "C" int rbd_copy2(rbd_image_t srcp, rbd_image_t destp) +{ + librbd::ImageCtx *src = (librbd::ImageCtx *)srcp; + librbd::ImageCtx *dest = (librbd::ImageCtx *)destp; + tracepoint(librbd, copy2_enter, src, src->name.c_str(), src->snap_name.c_str(), src->read_only, dest, dest->name.c_str(), dest->snap_name.c_str(), dest->read_only); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(src, dest, prog_ctx, 0); + tracepoint(librbd, copy2_exit, r); + return r; +} + +extern "C" int rbd_copy3(rbd_image_t image, rados_ioctx_t dest_p, + const char *destname, rbd_image_options_t c_opts) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librados::IoCtx dest_io_ctx; + librados::IoCtx::from_rados_ioctx_t(dest_p, dest_io_ctx); + tracepoint(librbd, copy3_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, c_opts); + librbd::ImageOptions c_opts_(c_opts); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(ictx, dest_io_ctx, destname, c_opts_, prog_ctx, 0); + tracepoint(librbd, copy3_exit, r); + return r; +} + +extern "C" int rbd_copy4(rbd_image_t image, rados_ioctx_t dest_p, + const char *destname, rbd_image_options_t c_opts, size_t sparse_size) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librados::IoCtx dest_io_ctx; + librados::IoCtx::from_rados_ioctx_t(dest_p, dest_io_ctx); + tracepoint(librbd, copy4_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, c_opts, sparse_size); + librbd::ImageOptions c_opts_(c_opts); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::copy(ictx, dest_io_ctx, destname, c_opts_, prog_ctx, sparse_size); + tracepoint(librbd, copy4_exit, r); + return r; +} + +extern "C" int rbd_copy_with_progress(rbd_image_t image, rados_ioctx_t dest_p, + const char *destname, + librbd_progress_fn_t fn, void *data) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librados::IoCtx dest_io_ctx; + librados::IoCtx::from_rados_ioctx_t(dest_p, dest_io_ctx); + tracepoint(librbd, copy_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname); + librbd::ImageOptions opts; + librbd::CProgressContext prog_ctx(fn, data); + int ret = librbd::copy(ictx, dest_io_ctx, destname, opts, prog_ctx, 0); + tracepoint(librbd, copy_exit, ret); + return ret; +} + +extern "C" int rbd_copy_with_progress2(rbd_image_t srcp, rbd_image_t destp, + librbd_progress_fn_t fn, void *data) +{ + librbd::ImageCtx *src = (librbd::ImageCtx *)srcp; + librbd::ImageCtx *dest = (librbd::ImageCtx *)destp; + tracepoint(librbd, copy2_enter, src, src->name.c_str(), src->snap_name.c_str(), src->read_only, dest, dest->name.c_str(), dest->snap_name.c_str(), dest->read_only); + librbd::CProgressContext prog_ctx(fn, data); + int ret = librbd::copy(src, dest, prog_ctx, 0); + tracepoint(librbd, copy2_exit, ret); + return ret; +} + +extern "C" int rbd_copy_with_progress3(rbd_image_t image, rados_ioctx_t dest_p, + const char *destname, + rbd_image_options_t dest_opts, + librbd_progress_fn_t fn, void *data) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librados::IoCtx dest_io_ctx; + librados::IoCtx::from_rados_ioctx_t(dest_p, dest_io_ctx); + tracepoint(librbd, copy3_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, dest_opts); + librbd::ImageOptions dest_opts_(dest_opts); + librbd::CProgressContext prog_ctx(fn, data); + int ret = librbd::copy(ictx, dest_io_ctx, destname, dest_opts_, prog_ctx, 0); + tracepoint(librbd, copy3_exit, ret); + return ret; +} + +extern "C" int rbd_copy_with_progress4(rbd_image_t image, rados_ioctx_t dest_p, + const char *destname, + rbd_image_options_t dest_opts, + librbd_progress_fn_t fn, void *data, size_t sparse_size) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librados::IoCtx dest_io_ctx; + librados::IoCtx::from_rados_ioctx_t(dest_p, dest_io_ctx); + tracepoint(librbd, copy4_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, dest_io_ctx.get_pool_name().c_str(), dest_io_ctx.get_id(), destname, dest_opts, sparse_size); + librbd::ImageOptions dest_opts_(dest_opts); + librbd::CProgressContext prog_ctx(fn, data); + int ret = librbd::copy(ictx, dest_io_ctx, destname, dest_opts_, prog_ctx, sparse_size); + tracepoint(librbd, copy4_exit, ret); + return ret; +} + + +extern "C" int rbd_flatten(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, flatten_enter, ictx, ictx->name.c_str(), ictx->id.c_str()); + librbd::NoOpProgressContext prog_ctx; + int r = ictx->operations->flatten(prog_ctx); + tracepoint(librbd, flatten_exit, r); + return r; +} + +extern "C" int rbd_flatten_with_progress(rbd_image_t image, + librbd_progress_fn_t cb, void *cbdata) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, flatten_enter, ictx, ictx->name.c_str(), ictx->id.c_str()); + librbd::CProgressContext prog_ctx(cb, cbdata); + int r = ictx->operations->flatten(prog_ctx); + tracepoint(librbd, flatten_exit, r); + return r; +} + +extern "C" int rbd_rename(rados_ioctx_t src_p, const char *srcname, + const char *destname) +{ + librados::IoCtx src_io_ctx; + librados::IoCtx::from_rados_ioctx_t(src_p, src_io_ctx); + TracepointProvider::initialize(get_cct(src_io_ctx)); + tracepoint(librbd, rename_enter, src_io_ctx.get_pool_name().c_str(), src_io_ctx.get_id(), srcname, destname); + int r = librbd::rename(src_io_ctx, srcname, destname); + tracepoint(librbd, rename_exit, r); + return r; +} + +extern "C" int rbd_open(rados_ioctx_t p, const char *name, rbd_image_t *image, + const char *snap_name) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx(name, "", snap_name, io_ctx, + false); + tracepoint(librbd, open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only); + + int r = ictx->state->open(false); + if (r >= 0) { + *image = (rbd_image_t)ictx; + } + tracepoint(librbd, open_image_exit, r); + return r; +} + +extern "C" int rbd_open_by_id(rados_ioctx_t p, const char *id, + rbd_image_t *image, const char *snap_name) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx("", id, snap_name, io_ctx, + false); + tracepoint(librbd, open_image_enter, ictx, ictx->name.c_str(), + ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only); + + int r = ictx->state->open(false); + if (r < 0) { + delete ictx; + } else { + *image = (rbd_image_t)ictx; + } + tracepoint(librbd, open_image_exit, r); + return r; +} + +extern "C" int rbd_aio_open(rados_ioctx_t p, const char *name, + rbd_image_t *image, const char *snap_name, + rbd_completion_t c) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx(name, "", snap_name, io_ctx, + false); + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only, comp->pc); + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(comp), image)); + tracepoint(librbd, aio_open_image_exit, 0); + return 0; +} + +extern "C" int rbd_aio_open_by_id(rados_ioctx_t p, const char *id, + rbd_image_t *image, const char *snap_name, + rbd_completion_t c) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx("", id, snap_name, io_ctx, + false); + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_open_image_enter, ictx, ictx->name.c_str(), + ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only, + comp->pc); + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(comp), image)); + tracepoint(librbd, aio_open_image_exit, 0); + return 0; +} + +extern "C" int rbd_open_read_only(rados_ioctx_t p, const char *name, + rbd_image_t *image, const char *snap_name) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx(name, "", snap_name, io_ctx, + true); + tracepoint(librbd, open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only); + + int r = ictx->state->open(false); + if (r >= 0) { + *image = (rbd_image_t)ictx; + } + tracepoint(librbd, open_image_exit, r); + return r; +} + +extern "C" int rbd_open_by_id_read_only(rados_ioctx_t p, const char *id, + rbd_image_t *image, const char *snap_name) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx("", id, snap_name, io_ctx, + true); + tracepoint(librbd, open_image_enter, ictx, ictx->name.c_str(), + ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only); + + int r = ictx->state->open(false); + if (r < 0) { + delete ictx; + } else { + *image = (rbd_image_t)ictx; + } + tracepoint(librbd, open_image_exit, r); + return r; +} + +extern "C" int rbd_aio_open_read_only(rados_ioctx_t p, const char *name, + rbd_image_t *image, const char *snap_name, + rbd_completion_t c) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx(name, "", snap_name, io_ctx, + true); + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_open_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only, comp->pc); + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(comp), + image)); + tracepoint(librbd, aio_open_image_exit, 0); + return 0; +} + +extern "C" int rbd_aio_open_by_id_read_only(rados_ioctx_t p, const char *id, + rbd_image_t *image, + const char *snap_name, + rbd_completion_t c) +{ + librados::IoCtx io_ctx; + librados::IoCtx::from_rados_ioctx_t(p, io_ctx); + TracepointProvider::initialize(get_cct(io_ctx)); + librbd::ImageCtx *ictx = new librbd::ImageCtx("", id, snap_name, io_ctx, + true); + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_open_image_enter, ictx, ictx->name.c_str(), + ictx->id.c_str(), ictx->snap_name.c_str(), ictx->read_only, comp->pc); + ictx->state->open(false, new C_OpenComplete(ictx, get_aio_completion(comp), + image)); + tracepoint(librbd, aio_open_image_exit, 0); + return 0; +} + +extern "C" int rbd_close(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, close_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str()); + + int r = ictx->state->close(); + + tracepoint(librbd, close_image_exit, r); + return r; +} + +extern "C" int rbd_aio_close(rbd_image_t image, rbd_completion_t c) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_close_image_enter, ictx, ictx->name.c_str(), ictx->id.c_str(), comp->pc); + ictx->state->close(new C_AioCompletion(ictx, librbd::io::AIO_TYPE_CLOSE, + get_aio_completion(comp))); + tracepoint(librbd, aio_close_image_exit, 0); + return 0; +} + +extern "C" int rbd_resize(rbd_image_t image, uint64_t size) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, resize_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, size); + librbd::NoOpProgressContext prog_ctx; + int r = ictx->operations->resize(size, true, prog_ctx); + tracepoint(librbd, resize_exit, r); + return r; +} + +extern "C" int rbd_resize2(rbd_image_t image, uint64_t size, bool allow_shrink, + librbd_progress_fn_t cb, void *cbdata) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, resize_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, size); + librbd::CProgressContext prog_ctx(cb, cbdata); + int r = ictx->operations->resize(size, allow_shrink, prog_ctx); + tracepoint(librbd, resize_exit, r); + return r; +} + +extern "C" int rbd_resize_with_progress(rbd_image_t image, uint64_t size, + librbd_progress_fn_t cb, void *cbdata) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, resize_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, size); + librbd::CProgressContext prog_ctx(cb, cbdata); + int r = ictx->operations->resize(size, true, prog_ctx); + tracepoint(librbd, resize_exit, r); + return r; +} + +extern "C" int rbd_stat(rbd_image_t image, rbd_image_info_t *info, + size_t infosize) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, stat_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::info(ictx, *info, infosize); + tracepoint(librbd, stat_exit, r, info); + return r; +} + +extern "C" int rbd_get_old_format(rbd_image_t image, uint8_t *old) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_old_format_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_old_format(ictx, old); + tracepoint(librbd, get_old_format_exit, r, *old); + return r; +} + +extern "C" int rbd_get_size(rbd_image_t image, uint64_t *size) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_size_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_size(ictx, size); + tracepoint(librbd, get_size_exit, r, *size); + return r; +} + +extern "C" int rbd_get_features(rbd_image_t image, uint64_t *features) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_features_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_features(ictx, features); + tracepoint(librbd, get_features_exit, r, *features); + return r; +} + +extern "C" int rbd_update_features(rbd_image_t image, uint64_t features, + uint8_t enabled) +{ + librbd::ImageCtx *ictx = reinterpret_cast(image); + bool features_enabled = enabled != 0; + tracepoint(librbd, update_features_enter, ictx, features, features_enabled); + int r = ictx->operations->update_features(features, features_enabled); + tracepoint(librbd, update_features_exit, r); + return r; +} + +extern "C" int rbd_get_stripe_unit(rbd_image_t image, uint64_t *stripe_unit) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_stripe_unit_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + *stripe_unit = ictx->get_stripe_unit(); + tracepoint(librbd, get_stripe_unit_exit, 0, *stripe_unit); + return 0; +} + +extern "C" int rbd_get_stripe_count(rbd_image_t image, uint64_t *stripe_count) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_stripe_count_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + *stripe_count = ictx->get_stripe_count(); + tracepoint(librbd, get_stripe_count_exit, 0, *stripe_count); + return 0; +} + +extern "C" int rbd_get_create_timestamp(rbd_image_t image, + struct timespec *timestamp) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_create_timestamp_enter, ictx, ictx->name.c_str(), + ictx->read_only); + utime_t time = ictx->get_create_timestamp(); + time.to_timespec(timestamp); + tracepoint(librbd, get_create_timestamp_exit, 0, timestamp); + return 0; +} + +extern "C" int rbd_get_overlap(rbd_image_t image, uint64_t *overlap) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_overlap_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::get_overlap(ictx, overlap); + tracepoint(librbd, get_overlap_exit, r, *overlap); + return r; +} + +extern "C" int rbd_get_id(rbd_image_t image, char *id, size_t id_len) +{ + librbd::ImageCtx *ictx = reinterpret_cast(image); + if (ictx->old_format) { + return -EINVAL; + } + if (ictx->id.size() >= id_len) { + return -ERANGE; + } + + strncpy(id, ictx->id.c_str(), id_len - 1); + id[id_len - 1] = '\0'; + return 0; +} + +extern "C" int rbd_get_block_name_prefix(rbd_image_t image, char *prefix, + size_t prefix_len) +{ + librbd::ImageCtx *ictx = reinterpret_cast(image); + if (ictx->object_prefix.size() >= prefix_len) { + return -ERANGE; + } + + strncpy(prefix, ictx->object_prefix.c_str(), prefix_len - 1); + prefix[prefix_len - 1] = '\0'; + return 0; +} + +extern "C" int64_t rbd_get_data_pool_id(rbd_image_t image) +{ + librbd::ImageCtx *ictx = reinterpret_cast(image); + return ictx->data_ctx.get_id(); +} + +extern "C" int rbd_get_parent_info(rbd_image_t image, + char *parent_pool_name, size_t ppool_namelen, + char *parent_name, size_t pnamelen, + char *parent_snap_name, size_t psnap_namelen) +{ + return rbd_get_parent_info2(image, parent_pool_name, ppool_namelen, + parent_name, pnamelen, nullptr, 0, + parent_snap_name, psnap_namelen); +} + +extern "C" int rbd_get_parent_info2(rbd_image_t image, + char *parent_pool_name, + size_t ppool_namelen, + char *parent_name, size_t pnamelen, + char *parent_id, size_t pidlen, + char *parent_snap_name, + size_t psnap_namelen) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_parent_info_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only); + string p_pool_name, p_name, p_id, p_snap_name; + + int r = librbd::get_parent_info(ictx, &p_pool_name, &p_name, &p_id, + &p_snap_name); + if (r < 0) { + tracepoint(librbd, get_parent_info_exit, r, NULL, NULL, NULL, NULL); + return r; + } + + if (parent_pool_name) { + if (p_pool_name.length() + 1 > ppool_namelen) { + tracepoint(librbd, get_parent_info_exit, -ERANGE, NULL, NULL, NULL, NULL); + return -ERANGE; + } + + strcpy(parent_pool_name, p_pool_name.c_str()); + } + if (parent_name) { + if (p_name.length() + 1 > pnamelen) { + tracepoint(librbd, get_parent_info_exit, -ERANGE, NULL, NULL, NULL, NULL); + return -ERANGE; + } + + strcpy(parent_name, p_name.c_str()); + } + if (parent_id) { + if (p_id.length() + 1 > pidlen) { + tracepoint(librbd, get_parent_info_exit, -ERANGE, NULL, NULL, NULL, NULL); + return -ERANGE; + } + + strcpy(parent_id, p_id.c_str()); + } + if (parent_snap_name) { + if (p_snap_name.length() + 1 > psnap_namelen) { + tracepoint(librbd, get_parent_info_exit, -ERANGE, NULL, NULL, NULL, NULL); + return -ERANGE; + } + + strcpy(parent_snap_name, p_snap_name.c_str()); + } + + tracepoint(librbd, get_parent_info_exit, 0, parent_pool_name, parent_name, + parent_id, parent_snap_name); + return 0; +} + +extern "C" int rbd_get_flags(rbd_image_t image, uint64_t *flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, get_flags_enter, ictx); + int r = librbd::get_flags(ictx, flags); + tracepoint(librbd, get_flags_exit, ictx, r, *flags); + return r; +} + +extern "C" int rbd_set_image_notification(rbd_image_t image, int fd, int type) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, set_image_notification_enter, ictx, fd, type); + int r = librbd::set_image_notification(ictx, fd, type); + tracepoint(librbd, set_image_notification_exit, ictx, r); + return r; +} + +extern "C" int rbd_is_exclusive_lock_owner(rbd_image_t image, int *is_owner) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, is_exclusive_lock_owner_enter, ictx); + bool owner; + int r = librbd::is_exclusive_lock_owner(ictx, &owner); + *is_owner = owner ? 1 : 0; + tracepoint(librbd, is_exclusive_lock_owner_exit, ictx, r, *is_owner); + return r; +} + +extern "C" int rbd_lock_acquire(rbd_image_t image, rbd_lock_mode_t lock_mode) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, lock_acquire_enter, ictx, lock_mode); + int r = librbd::lock_acquire(ictx, lock_mode); + tracepoint(librbd, lock_acquire_exit, ictx, r); + return r; +} + +extern "C" int rbd_lock_release(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, lock_release_enter, ictx); + int r = librbd::lock_release(ictx); + tracepoint(librbd, lock_release_exit, ictx, r); + return r; +} + +extern "C" int rbd_lock_get_owners(rbd_image_t image, + rbd_lock_mode_t *lock_mode, + char **lock_owners, + size_t *max_lock_owners) +{ + librbd::ImageCtx *ictx = reinterpret_cast(image); + tracepoint(librbd, lock_get_owners_enter, ictx); + std::list lock_owner_list; + int r = librbd::lock_get_owners(ictx, lock_mode, &lock_owner_list); + if (r >= 0) { + if (*max_lock_owners >= lock_owner_list.size()) { + *max_lock_owners = 0; + for (auto &lock_owner : lock_owner_list) { + lock_owners[(*max_lock_owners)++] = strdup(lock_owner.c_str()); + } + } else { + *max_lock_owners = lock_owner_list.size(); + r = -ERANGE; + } + } + tracepoint(librbd, lock_get_owners_exit, ictx, r); + return r; +} + +extern "C" void rbd_lock_get_owners_cleanup(char **lock_owners, + size_t lock_owner_count) +{ + for (size_t i = 0; i < lock_owner_count; ++i) { + free(lock_owners[i]); + } +} + +extern "C" int rbd_lock_break(rbd_image_t image, rbd_lock_mode_t lock_mode, + const char *lock_owner) +{ + librbd::ImageCtx *ictx = reinterpret_cast(image); + tracepoint(librbd, lock_break_enter, ictx, lock_mode, lock_owner); + int r = librbd::lock_break(ictx, lock_mode, lock_owner); + tracepoint(librbd, lock_break_exit, ictx, r); + return r; +} + +extern "C" int rbd_rebuild_object_map(rbd_image_t image, + librbd_progress_fn_t cb, void *cbdata) +{ + librbd::ImageCtx *ictx = reinterpret_cast(image); + librbd::CProgressContext prog_ctx(cb, cbdata); + return ictx->operations->rebuild_object_map(prog_ctx); +} + +/* snapshots */ +extern "C" int rbd_snap_create(rbd_image_t image, const char *snap_name) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_create_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = ictx->operations->snap_create(cls::rbd::UserSnapshotNamespace(), + snap_name); + tracepoint(librbd, snap_create_exit, r); + return r; +} + +extern "C" int rbd_snap_rename(rbd_image_t image, const char *srcname, const char *dstname) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_rename_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, srcname, dstname); + int r = ictx->operations->snap_rename(srcname, dstname); + tracepoint(librbd, snap_rename_exit, r); + return r; +} + +extern "C" int rbd_snap_remove(rbd_image_t image, const char *snap_name) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_remove_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + librbd::NoOpProgressContext prog_ctx; + int r = librbd::snap_remove(ictx, snap_name, 0, prog_ctx); + tracepoint(librbd, snap_remove_exit, r); + return r; +} + +extern "C" int rbd_snap_remove2(rbd_image_t image, const char *snap_name, uint32_t flags, + librbd_progress_fn_t cb, void *cbdata) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_remove2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name, flags); + librbd::CProgressContext prog_ctx(cb, cbdata); + int r = librbd::snap_remove(ictx, snap_name, flags, prog_ctx); + tracepoint(librbd, snap_remove_exit, r); + return r; +} + +extern "C" int rbd_snap_rollback(rbd_image_t image, const char *snap_name) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_rollback_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + librbd::NoOpProgressContext prog_ctx; + int r = ictx->operations->snap_rollback(cls::rbd::UserSnapshotNamespace(), snap_name, prog_ctx); + tracepoint(librbd, snap_rollback_exit, r); + return r; +} + +extern "C" int rbd_snap_rollback_with_progress(rbd_image_t image, + const char *snap_name, + librbd_progress_fn_t cb, + void *cbdata) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_rollback_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + librbd::CProgressContext prog_ctx(cb, cbdata); + int r = ictx->operations->snap_rollback(cls::rbd::UserSnapshotNamespace(), snap_name, prog_ctx); + tracepoint(librbd, snap_rollback_exit, r); + return r; +} + +extern "C" int rbd_snap_list(rbd_image_t image, rbd_snap_info_t *snaps, + int *max_snaps) +{ + vector cpp_snaps; + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_list_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snaps); + + if (!max_snaps) { + tracepoint(librbd, snap_list_exit, -EINVAL, 0); + return -EINVAL; + } + + int r = librbd::snap_list(ictx, cpp_snaps); + if (r == -ENOENT) { + tracepoint(librbd, snap_list_exit, 0, *max_snaps); + return 0; + } + if (r < 0) { + tracepoint(librbd, snap_list_exit, r, *max_snaps); + return r; + } + if (*max_snaps < (int)cpp_snaps.size() + 1) { + *max_snaps = (int)cpp_snaps.size() + 1; + tracepoint(librbd, snap_list_exit, -ERANGE, *max_snaps); + return -ERANGE; + } + + int i; + + for (i = 0; i < (int)cpp_snaps.size(); i++) { + snaps[i].id = cpp_snaps[i].id; + snaps[i].size = cpp_snaps[i].size; + snaps[i].name = strdup(cpp_snaps[i].name.c_str()); + if (!snaps[i].name) { + for (int j = 0; j < i; j++) + free((void *)snaps[j].name); + tracepoint(librbd, snap_list_exit, -ENOMEM, *max_snaps); + return -ENOMEM; + } + tracepoint(librbd, snap_list_entry, snaps[i].id, snaps[i].size, snaps[i].name); + } + snaps[i].id = 0; + snaps[i].size = 0; + snaps[i].name = NULL; + + r = (int)cpp_snaps.size(); + tracepoint(librbd, snap_list_exit, r, *max_snaps); + return r; +} + +extern "C" void rbd_snap_list_end(rbd_snap_info_t *snaps) +{ + tracepoint(librbd, snap_list_end_enter, snaps); + while (snaps->name) { + free((void *)snaps->name); + snaps++; + } + tracepoint(librbd, snap_list_end_exit); +} + +extern "C" int rbd_snap_protect(rbd_image_t image, const char *snap_name) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_protect_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = ictx->operations->snap_protect(cls::rbd::UserSnapshotNamespace(), snap_name); + tracepoint(librbd, snap_protect_exit, r); + return r; +} + +extern "C" int rbd_snap_unprotect(rbd_image_t image, const char *snap_name) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_unprotect_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = ictx->operations->snap_unprotect(cls::rbd::UserSnapshotNamespace(), snap_name); + tracepoint(librbd, snap_unprotect_exit, r); + return r; +} + +extern "C" int rbd_snap_is_protected(rbd_image_t image, const char *snap_name, + int *is_protected) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_is_protected_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + bool protected_snap; + int r = librbd::snap_is_protected(ictx, snap_name, &protected_snap); + if (r < 0) { + tracepoint(librbd, snap_is_protected_exit, r, *is_protected ? 1 : 0); + return r; + } + *is_protected = protected_snap ? 1 : 0; + tracepoint(librbd, snap_is_protected_exit, 0, *is_protected ? 1 : 0); + return 0; +} + +extern "C" int rbd_snap_get_limit(rbd_image_t image, uint64_t *limit) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_get_limit_enter, ictx, ictx->name.c_str()); + int r = librbd::snap_get_limit(ictx, limit); + tracepoint(librbd, snap_get_limit_exit, r, *limit); + return r; +} + +extern "C" int rbd_snap_get_timestamp(rbd_image_t image, uint64_t snap_id, struct timespec *timestamp) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_get_timestamp_enter, ictx, ictx->name.c_str()); + int r = librbd::snap_get_timestamp(ictx, snap_id, timestamp); + tracepoint(librbd, snap_get_timestamp_exit, r); + return r; +} + +extern "C" int rbd_snap_set_limit(rbd_image_t image, uint64_t limit) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_set_limit_enter, ictx, ictx->name.c_str(), limit); + int r = librbd::snap_set_limit(ictx, limit); + tracepoint(librbd, snap_set_limit_exit, r); + return r; +} + +extern "C" int rbd_snap_set(rbd_image_t image, const char *snap_name) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, snap_set_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, snap_name); + int r = librbd::snap_set(ictx, cls::rbd::UserSnapshotNamespace(), snap_name); + tracepoint(librbd, snap_set_exit, r); + return r; +} + +extern "C" ssize_t rbd_list_children(rbd_image_t image, char *pools, + size_t *pools_len, char *images, + size_t *images_len) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, list_children_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + set > image_set; + + int r = librbd::list_children(ictx, image_set); + if (r < 0) { + tracepoint(librbd, list_children_exit, r); + return r; + } + + size_t pools_total = 0; + size_t images_total = 0; + for (set >::const_iterator it = image_set.begin(); + it != image_set.end(); ++it) { + pools_total += it->first.length() + 1; + images_total += it->second.length() + 1; + } + + bool too_short = false; + if (pools_total > *pools_len) + too_short = true; + if (images_total > *images_len) + too_short = true; + *pools_len = pools_total; + *images_len = images_total; + if (too_short) { + tracepoint(librbd, list_children_exit, -ERANGE); + return -ERANGE; + } + + char *pools_p = pools; + char *images_p = images; + for (set >::const_iterator it = image_set.begin(); + it != image_set.end(); ++it) { + const char* pool = it->first.c_str(); + strcpy(pools_p, pool); + pools_p += it->first.length() + 1; + const char* image = it->second.c_str(); + strcpy(images_p, image); + images_p += it->second.length() + 1; + tracepoint(librbd, list_children_entry, pool, image); + } + + ssize_t ret = image_set.size(); + tracepoint(librbd, list_children_exit, ret); + return ret; +} + +extern "C" ssize_t rbd_list_lockers(rbd_image_t image, int *exclusive, + char *tag, size_t *tag_len, + char *clients, size_t *clients_len, + char *cookies, size_t *cookies_len, + char *addrs, size_t *addrs_len) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, list_lockers_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + std::list lockers; + bool exclusive_bool; + string tag_str; + + int r = list_lockers(ictx, &lockers, &exclusive_bool, &tag_str); + if (r < 0) { + tracepoint(librbd, list_lockers_exit, r); + return r; + } + + ldout(ictx->cct, 20) << "list_lockers r = " << r << " lockers.size() = " << lockers.size() << dendl; + + *exclusive = (int)exclusive_bool; + size_t clients_total = 0; + size_t cookies_total = 0; + size_t addrs_total = 0; + for (list::const_iterator it = lockers.begin(); + it != lockers.end(); ++it) { + clients_total += it->client.length() + 1; + cookies_total += it->cookie.length() + 1; + addrs_total += it->address.length() + 1; + } + + bool too_short = ((clients_total > *clients_len) || + (cookies_total > *cookies_len) || + (addrs_total > *addrs_len) || + (tag_str.length() + 1 > *tag_len)); + *clients_len = clients_total; + *cookies_len = cookies_total; + *addrs_len = addrs_total; + *tag_len = tag_str.length() + 1; + if (too_short) { + tracepoint(librbd, list_lockers_exit, -ERANGE); + return -ERANGE; + } + + strcpy(tag, tag_str.c_str()); + char *clients_p = clients; + char *cookies_p = cookies; + char *addrs_p = addrs; + for (list::const_iterator it = lockers.begin(); + it != lockers.end(); ++it) { + const char* client = it->client.c_str(); + strcpy(clients_p, client); + clients_p += it->client.length() + 1; + const char* cookie = it->cookie.c_str(); + strcpy(cookies_p, cookie); + cookies_p += it->cookie.length() + 1; + const char* address = it->address.c_str(); + strcpy(addrs_p, address); + addrs_p += it->address.length() + 1; + tracepoint(librbd, list_lockers_entry, client, cookie, address); + } + + ssize_t ret = lockers.size(); + tracepoint(librbd, list_lockers_exit, ret); + return ret; +} + +extern "C" int rbd_lock_exclusive(rbd_image_t image, const char *cookie) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, lock_exclusive_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, cookie); + int r = librbd::lock(ictx, true, cookie ? cookie : "", ""); + tracepoint(librbd, lock_exclusive_exit, r); + return r; +} + +extern "C" int rbd_lock_shared(rbd_image_t image, const char *cookie, + const char *tag) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, lock_shared_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, cookie, tag); + int r = librbd::lock(ictx, false, cookie ? cookie : "", tag ? tag : ""); + tracepoint(librbd, lock_shared_exit, r); + return r; +} + +extern "C" int rbd_unlock(rbd_image_t image, const char *cookie) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, unlock_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, cookie); + int r = librbd::unlock(ictx, cookie ? cookie : ""); + tracepoint(librbd, unlock_exit, r); + return r; +} + +extern "C" int rbd_break_lock(rbd_image_t image, const char *client, + const char *cookie) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, break_lock_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, client, cookie); + int r = librbd::break_lock(ictx, client, cookie ? cookie : ""); + tracepoint(librbd, break_lock_exit, r); + return r; +} + +/* I/O */ +extern "C" ssize_t rbd_read(rbd_image_t image, uint64_t ofs, size_t len, + char *buf) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, read_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + int r = ictx->io_work_queue->read(ofs, len, librbd::io::ReadResult{buf, len}, + 0); + tracepoint(librbd, read_exit, r); + return r; +} + +extern "C" ssize_t rbd_read2(rbd_image_t image, uint64_t ofs, size_t len, + char *buf, int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, read2_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, ofs, len, op_flags); + int r = ictx->io_work_queue->read(ofs, len, librbd::io::ReadResult{buf, len}, + op_flags); + tracepoint(librbd, read_exit, r); + return r; +} + + +extern "C" int64_t rbd_read_iterate(rbd_image_t image, uint64_t ofs, size_t len, + int (*cb)(uint64_t, size_t, const char *, void *), + void *arg) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, read_iterate_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + int64_t r = librbd::read_iterate(ictx, ofs, len, cb, arg); + tracepoint(librbd, read_iterate_exit, r); + return r; +} + +extern "C" int rbd_read_iterate2(rbd_image_t image, uint64_t ofs, uint64_t len, + int (*cb)(uint64_t, size_t, const char *, void *), + void *arg) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, read_iterate2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + int64_t r = librbd::read_iterate(ictx, ofs, len, cb, arg); + if (r > 0) + r = 0; + tracepoint(librbd, read_iterate2_exit, r); + return (int)r; +} + +extern "C" int rbd_diff_iterate(rbd_image_t image, + const char *fromsnapname, + uint64_t ofs, uint64_t len, + int (*cb)(uint64_t, size_t, int, void *), + void *arg) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, diff_iterate_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, fromsnapname, ofs, len, + true, false); + int r = librbd::api::DiffIterate<>::diff_iterate(ictx, + cls::rbd::UserSnapshotNamespace(), + fromsnapname, ofs, len, + true, false, cb, arg); + tracepoint(librbd, diff_iterate_exit, r); + return r; +} + +extern "C" int rbd_diff_iterate2(rbd_image_t image, const char *fromsnapname, + uint64_t ofs, uint64_t len, + uint8_t include_parent, uint8_t whole_object, + int (*cb)(uint64_t, size_t, int, void *), + void *arg) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, diff_iterate_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, fromsnapname, ofs, len, + include_parent != 0, whole_object != 0); + int r = librbd::api::DiffIterate<>::diff_iterate(ictx, + cls::rbd::UserSnapshotNamespace(), + fromsnapname, ofs, len, + include_parent, whole_object, + cb, arg); + tracepoint(librbd, diff_iterate_exit, r); + return r; +} + +extern "C" ssize_t rbd_write(rbd_image_t image, uint64_t ofs, size_t len, + const char *buf) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, write_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len, buf); + + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, len)); + int r = ictx->io_work_queue->write(ofs, len, std::move(bl), 0); + tracepoint(librbd, write_exit, r); + return r; +} + +extern "C" ssize_t rbd_write2(rbd_image_t image, uint64_t ofs, size_t len, + const char *buf, int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, write2_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, ofs, len, buf, op_flags); + + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, len)); + int r = ictx->io_work_queue->write(ofs, len, std::move(bl), op_flags); + tracepoint(librbd, write_exit, r); + return r; +} + + +extern "C" int rbd_discard(rbd_image_t image, uint64_t ofs, uint64_t len) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, discard_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, ofs, len); + int r = ictx->io_work_queue->discard(ofs, len, ictx->skip_partial_discard); + tracepoint(librbd, discard_exit, r); + return r; +} + +extern "C" ssize_t rbd_writesame(rbd_image_t image, uint64_t ofs, size_t len, + const char *buf, size_t data_len, int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, writesame_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, ofs, len, data_len <= 0 ? NULL : buf, data_len, op_flags); + + if (data_len <= 0 || len % data_len) { + tracepoint(librbd, writesame_exit, -EINVAL); + return -EINVAL; + } + + if (mem_is_zero(buf, data_len)) { + int r = ictx->io_work_queue->discard(ofs, len, false); + tracepoint(librbd, writesame_exit, r); + return r; + } + + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, data_len)); + int r = ictx->io_work_queue->writesame(ofs, len, std::move(bl), op_flags); + tracepoint(librbd, writesame_exit, r); + return r; +} + +extern "C" ssize_t rbd_compare_and_write(rbd_image_t image, + uint64_t ofs, size_t len, + const char *cmp_buf, + const char *buf, + uint64_t *mismatch_off, + int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, compare_and_write_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, ofs, + len, cmp_buf, buf, op_flags); + + bufferlist cmp_bl; + cmp_bl.push_back(create_write_raw(ictx, cmp_buf, len)); + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, len)); + + int r = ictx->io_work_queue->compare_and_write(ofs, len, std::move(cmp_bl), + std::move(bl), mismatch_off, + op_flags); + tracepoint(librbd, compare_and_write_exit, r); + return r; +} + +extern "C" int rbd_aio_create_completion(void *cb_arg, + rbd_callback_t complete_cb, + rbd_completion_t *c) +{ + librbd::RBD::AioCompletion *rbd_comp = + new librbd::RBD::AioCompletion(cb_arg, complete_cb); + *c = (rbd_completion_t) rbd_comp; + return 0; +} + +extern "C" int rbd_aio_write(rbd_image_t image, uint64_t off, size_t len, + const char *buf, rbd_completion_t c) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_write_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, off, len, buf, comp->pc); + + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, len)); + ictx->io_work_queue->aio_write(get_aio_completion(comp), off, len, + std::move(bl), 0); + tracepoint(librbd, aio_write_exit, 0); + return 0; +} + +extern "C" int rbd_aio_write2(rbd_image_t image, uint64_t off, size_t len, + const char *buf, rbd_completion_t c, int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_write2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, off, len, buf, comp->pc, op_flags); + + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, len)); + ictx->io_work_queue->aio_write(get_aio_completion(comp), off, len, + std::move(bl), op_flags); + tracepoint(librbd, aio_write_exit, 0); + return 0; +} + +extern "C" int rbd_aio_writev(rbd_image_t image, const struct iovec *iov, + int iovcnt, uint64_t off, rbd_completion_t c) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + + // convert the scatter list into a bufferlist + ssize_t len = 0; + bufferlist bl; + for (int i = 0; i < iovcnt; ++i) { + const struct iovec &io = iov[i]; + len += io.iov_len; + if (len < 0) { + break; + } + + bl.push_back(create_write_raw(ictx, static_cast(io.iov_base), + io.iov_len)); + } + + int r = 0; + if (iovcnt <= 0 || len < 0) { + r = -EINVAL; + } + + tracepoint(librbd, aio_write_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, off, len, NULL, + comp->pc); + if (r == 0) { + ictx->io_work_queue->aio_write(get_aio_completion(comp), off, len, + std::move(bl), 0); + } + tracepoint(librbd, aio_write_exit, r); + return r; +} + +extern "C" int rbd_aio_discard(rbd_image_t image, uint64_t off, uint64_t len, + rbd_completion_t c) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_discard_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, off, len, comp->pc); + ictx->io_work_queue->aio_discard(get_aio_completion(comp), off, len, ictx->skip_partial_discard); + tracepoint(librbd, aio_discard_exit, 0); + return 0; +} + +extern "C" int rbd_aio_read(rbd_image_t image, uint64_t off, size_t len, + char *buf, rbd_completion_t c) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_read_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, off, len, buf, comp->pc); + ictx->io_work_queue->aio_read(get_aio_completion(comp), off, len, + librbd::io::ReadResult{buf, len}, 0); + tracepoint(librbd, aio_read_exit, 0); + return 0; +} + +extern "C" int rbd_aio_read2(rbd_image_t image, uint64_t off, size_t len, + char *buf, rbd_completion_t c, int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_read2_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, off, len, buf, comp->pc, op_flags); + ictx->io_work_queue->aio_read(get_aio_completion(comp), off, len, + librbd::io::ReadResult{buf, len},op_flags); + tracepoint(librbd, aio_read_exit, 0); + return 0; +} + +extern "C" int rbd_aio_readv(rbd_image_t image, const struct iovec *iov, + int iovcnt, uint64_t off, rbd_completion_t c) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + + ssize_t len = 0; + for (int i = 0; i < iovcnt; ++i) { + len += iov[i].iov_len; + if (len < 0) { + break; + } + } + + int r = 0; + if (iovcnt == 0 || len < 0) { + r = -EINVAL; + } + + tracepoint(librbd, aio_read_enter, ictx, ictx->name.c_str(), + ictx->snap_name.c_str(), ictx->read_only, off, len, NULL, + comp->pc); + if (r == 0) { + librbd::io::ReadResult read_result; + if (iovcnt == 1) { + read_result = librbd::io::ReadResult( + static_cast(iov[0].iov_base), iov[0].iov_len); + } else { + read_result = librbd::io::ReadResult(iov, iovcnt); + } + ictx->io_work_queue->aio_read(get_aio_completion(comp), off, len, + std::move(read_result), 0); + } + tracepoint(librbd, aio_read_exit, r); + return r; +} + +extern "C" int rbd_flush(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, flush_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::flush(ictx); + tracepoint(librbd, flush_exit, r); + return r; +} + +extern "C" int rbd_aio_flush(rbd_image_t image, rbd_completion_t c) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_flush_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only, comp->pc); + ictx->io_work_queue->aio_flush(get_aio_completion(comp)); + tracepoint(librbd, aio_flush_exit, 0); + return 0; +} + +extern "C" int rbd_aio_writesame(rbd_image_t image, uint64_t off, size_t len, + const char *buf, size_t data_len, rbd_completion_t c, + int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_writesame_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, off, len, data_len <= 0 ? NULL : buf, data_len, comp->pc, + op_flags); + + if (data_len <= 0 || len % data_len) { + tracepoint(librbd, aio_writesame_exit, -EINVAL); + return -EINVAL; + } + + if (mem_is_zero(buf, data_len)) { + ictx->io_work_queue->aio_discard(get_aio_completion(comp), off, len, false); + tracepoint(librbd, aio_writesame_exit, 0); + return 0; + } + + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, data_len)); + ictx->io_work_queue->aio_writesame(get_aio_completion(comp), off, len, + std::move(bl), op_flags); + tracepoint(librbd, aio_writesame_exit, 0); + return 0; +} + +extern "C" ssize_t rbd_aio_compare_and_write(rbd_image_t image, uint64_t off, + size_t len, const char *cmp_buf, + const char *buf, rbd_completion_t c, + uint64_t *mismatch_off, + int op_flags) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + tracepoint(librbd, aio_compare_and_write_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), + ictx->read_only, off, len, cmp_buf, buf, comp->pc, op_flags); + + bufferlist cmp_bl; + cmp_bl.push_back(create_write_raw(ictx, cmp_buf, len)); + bufferlist bl; + bl.push_back(create_write_raw(ictx, buf, len)); + ictx->io_work_queue->aio_compare_and_write(get_aio_completion(comp), off, len, + std::move(cmp_bl), std::move(bl), + mismatch_off, op_flags, false); + + tracepoint(librbd, aio_compare_and_write_exit, 0); + return 0; +} + +extern "C" int rbd_invalidate_cache(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, invalidate_cache_enter, ictx, ictx->name.c_str(), ictx->snap_name.c_str(), ictx->read_only); + int r = librbd::invalidate_cache(ictx); + tracepoint(librbd, invalidate_cache_exit, r); + return r; +} + +extern "C" int rbd_poll_io_events(rbd_image_t image, rbd_completion_t *comps, int numcomp) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::io::AioCompletion *cs[numcomp]; + tracepoint(librbd, poll_io_events_enter, ictx, numcomp); + int r = librbd::poll_io_events(ictx, cs, numcomp); + tracepoint(librbd, poll_io_events_exit, r); + if (r > 0) { + for (int i = 0; i < r; ++i) + comps[i] = cs[i]->rbd_comp; + } + return r; +} + +extern "C" int rbd_metadata_get(rbd_image_t image, const char *key, char *value, size_t *vallen) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + string val_s; + tracepoint(librbd, metadata_get_enter, ictx, key); + int r = librbd::metadata_get(ictx, key, &val_s); + if (r < 0) { + tracepoint(librbd, metadata_get_exit, r, key, NULL); + return r; + } + if (*vallen < val_s.size() + 1) { + r = -ERANGE; + *vallen = val_s.size() + 1; + tracepoint(librbd, metadata_get_exit, r, key, NULL); + } else { + strncpy(value, val_s.c_str(), val_s.size() + 1); + tracepoint(librbd, metadata_get_exit, r, key, value); + } + return r; +} + +extern "C" int rbd_metadata_set(rbd_image_t image, const char *key, const char *value) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, metadata_set_enter, ictx, key, value); + int r = ictx->operations->metadata_set(key, value); + tracepoint(librbd, metadata_set_exit, r); + return r; +} + +extern "C" int rbd_metadata_remove(rbd_image_t image, const char *key) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, metadata_remove_enter, ictx, key); + int r = ictx->operations->metadata_remove(key); + tracepoint(librbd, metadata_remove_exit, r); + return r; +} + +extern "C" int rbd_metadata_list(rbd_image_t image, const char *start, uint64_t max, + char *key, size_t *key_len, char *value, size_t *val_len) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + tracepoint(librbd, metadata_list_enter, ictx); + map pairs; + int r = librbd::metadata_list(ictx, start, max, &pairs); + size_t key_total_len = 0, val_total_len = 0; + bool too_short = false; + for (map::iterator it = pairs.begin(); + it != pairs.end(); ++it) { + key_total_len += it->first.size() + 1; + val_total_len += it->second.length() + 1; + } + if (*key_len < key_total_len || *val_len < val_total_len) + too_short = true; + *key_len = key_total_len; + *val_len = val_total_len; + if (too_short) { + tracepoint(librbd, metadata_list_exit, -ERANGE); + return -ERANGE; + } + + char *key_p = key, *value_p = value; + + for (map::iterator it = pairs.begin(); + it != pairs.end(); ++it) { + strncpy(key_p, it->first.c_str(), it->first.size() + 1); + key_p += it->first.size() + 1; + strncpy(value_p, it->second.c_str(), it->second.length()); + value_p += it->second.length(); + *value_p = '\0'; + value_p++; + tracepoint(librbd, metadata_list_entry, it->first.c_str(), it->second.c_str()); + } + tracepoint(librbd, metadata_list_exit, r); + return r; +} + +extern "C" int rbd_mirror_image_enable(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + return librbd::api::Mirror<>::image_enable(ictx, false); +} + +extern "C" int rbd_mirror_image_disable(rbd_image_t image, bool force) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + return librbd::api::Mirror<>::image_disable(ictx, force); +} + +extern "C" int rbd_mirror_image_promote(rbd_image_t image, bool force) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + return librbd::api::Mirror<>::image_promote(ictx, force); +} + +extern "C" int rbd_mirror_image_demote(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + return librbd::api::Mirror<>::image_demote(ictx); +} + +extern "C" int rbd_mirror_image_resync(rbd_image_t image) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + return librbd::api::Mirror<>::image_resync(ictx); +} + +extern "C" int rbd_mirror_image_get_info(rbd_image_t image, + rbd_mirror_image_info_t *mirror_image_info, + size_t info_size) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + + librbd::mirror_image_info_t cpp_mirror_image; + int r = librbd::api::Mirror<>::image_get_info(ictx, &cpp_mirror_image, + sizeof(cpp_mirror_image)); + if (r < 0) { + return r; + } + + mirror_image_info_cpp_to_c(cpp_mirror_image, mirror_image_info); + return 0; +} + +extern "C" int rbd_mirror_image_get_status(rbd_image_t image, + rbd_mirror_image_status_t *status, + size_t status_size) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + + librbd::mirror_image_status_t cpp_status; + int r = librbd::api::Mirror<>::image_get_status(ictx, &cpp_status, + sizeof(cpp_status)); + if (r < 0) { + return r; + } + + mirror_image_status_cpp_to_c(cpp_status, status); + return 0; +} + +extern "C" int rbd_aio_mirror_image_promote(rbd_image_t image, bool force, + rbd_completion_t c) { + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + librbd::api::Mirror<>::image_promote( + ictx, force, new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(comp))); + return 0; +} + +extern "C" int rbd_aio_mirror_image_demote(rbd_image_t image, + rbd_completion_t c) { + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + librbd::api::Mirror<>::image_demote( + ictx, new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(comp))); + return 0; +} + +extern "C" int rbd_aio_mirror_image_get_info(rbd_image_t image, + rbd_mirror_image_info_t *info, + size_t info_size, + rbd_completion_t c) { + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + + if (sizeof(rbd_mirror_image_info_t) > info_size) { + return -ERANGE; + } + + auto ctx = new C_MirrorImageGetInfo( + info, new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(comp))); + librbd::api::Mirror<>::image_get_info( + ictx, &ctx->cpp_mirror_image_info, sizeof(ctx->cpp_mirror_image_info), ctx); + return 0; +} + +extern "C" int rbd_aio_mirror_image_get_status(rbd_image_t image, + rbd_mirror_image_status_t *status, + size_t status_size, + rbd_completion_t c) { + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + + if (sizeof(rbd_mirror_image_status_t) > status_size) { + return -ERANGE; + } + + auto ctx = new C_MirrorImageGetStatus( + status, new C_AioCompletion(ictx, librbd::io::AIO_TYPE_GENERIC, + get_aio_completion(comp))); + librbd::api::Mirror<>::image_get_status( + ictx, &ctx->cpp_mirror_image_status, sizeof(ctx->cpp_mirror_image_status), + ctx); + return 0; +} + +extern "C" int rbd_update_watch(rbd_image_t image, uint64_t *handle, + rbd_update_callback_t watch_cb, void *arg) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + C_UpdateWatchCB *wctx = new C_UpdateWatchCB(watch_cb, arg); + tracepoint(librbd, update_watch_enter, ictx, wctx); + int r = ictx->state->register_update_watcher(wctx, &wctx->handle); + tracepoint(librbd, update_watch_exit, r, wctx->handle); + *handle = reinterpret_cast(wctx); + return r; +} + +extern "C" int rbd_update_unwatch(rbd_image_t image, uint64_t handle) +{ + librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; + C_UpdateWatchCB *wctx = reinterpret_cast(handle); + tracepoint(librbd, update_unwatch_enter, ictx, wctx->handle); + int r = ictx->state->unregister_update_watcher(wctx->handle); + delete wctx; + tracepoint(librbd, update_unwatch_exit, r); + return r; +} + +extern "C" int rbd_aio_is_complete(rbd_completion_t c) +{ + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + return comp->is_complete(); +} + +extern "C" int rbd_aio_wait_for_complete(rbd_completion_t c) +{ + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + return comp->wait_for_complete(); +} + +extern "C" ssize_t rbd_aio_get_return_value(rbd_completion_t c) +{ + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + return comp->get_return_value(); +} + +extern "C" void *rbd_aio_get_arg(rbd_completion_t c) +{ + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + return comp->get_arg(); +} + +extern "C" void rbd_aio_release(rbd_completion_t c) +{ + librbd::RBD::AioCompletion *comp = (librbd::RBD::AioCompletion *)c; + comp->release(); +} +