Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / nfsd / vfs.h

diff --git a/kernel/fs/nfsd/vfs.h b/kernel/fs/nfsd/vfs.h
new file mode 100644 (file)
index 0000000..2050cb0
--- /dev/null
+++ b/kernel/fs/nfsd/vfs.h
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef LINUX_NFSD_VFS_H
+#define LINUX_NFSD_VFS_H
+
+#include "nfsfh.h"
+#include "nfsd.h"
+
+/*
+ * Flags for nfsd_permission
+ */
+#define NFSD_MAY_NOP                   0
+#define NFSD_MAY_EXEC                  0x001 /* == MAY_EXEC */
+#define NFSD_MAY_WRITE                 0x002 /* == MAY_WRITE */
+#define NFSD_MAY_READ                  0x004 /* == MAY_READ */
+#define NFSD_MAY_SATTR                 0x008
+#define NFSD_MAY_TRUNC                 0x010
+#define NFSD_MAY_LOCK                  0x020
+#define NFSD_MAY_MASK                  0x03f
+
+/* extra hints to permission and open routines: */
+#define NFSD_MAY_OWNER_OVERRIDE                0x040
+#define NFSD_MAY_LOCAL_ACCESS          0x080 /* for device special files */
+#define NFSD_MAY_BYPASS_GSS_ON_ROOT    0x100
+#define NFSD_MAY_NOT_BREAK_LEASE       0x200
+#define NFSD_MAY_BYPASS_GSS            0x400
+#define NFSD_MAY_READ_IF_EXEC          0x800
+
+#define NFSD_MAY_64BIT_COOKIE          0x1000 /* 64 bit readdir cookies for >= NFSv3 */
+
+#define NFSD_MAY_CREATE                (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
+#define NFSD_MAY_REMOVE                (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
+
+/*
+ * Callback function for readdir
+ */
+typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
+
+/* nfsd/vfs.c */
+int            nfsd_racache_init(int);
+void           nfsd_racache_shutdown(void);
+int            nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
+                               struct svc_export **expp);
+__be32         nfsd_lookup(struct svc_rqst *, struct svc_fh *,
+                               const char *, unsigned int, struct svc_fh *);
+__be32          nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
+                               const char *, unsigned int,
+                               struct svc_export **, struct dentry **);
+__be32         nfsd_setattr(struct svc_rqst *, struct svc_fh *,
+                               struct iattr *, int, time_t);
+int nfsd_mountpoint(struct dentry *, struct svc_export *);
+#ifdef CONFIG_NFSD_V4
+__be32          nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
+                   struct xdr_netobj *);
+__be32         nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
+                                   struct file *, loff_t, loff_t, int);
+#endif /* CONFIG_NFSD_V4 */
+__be32         nfsd_create(struct svc_rqst *, struct svc_fh *,
+                               char *name, int len, struct iattr *attrs,
+                               int type, dev_t rdev, struct svc_fh *res);
+#ifdef CONFIG_NFSD_V3
+__be32         nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
+__be32         do_nfsd_create(struct svc_rqst *, struct svc_fh *,
+                               char *name, int len, struct iattr *attrs,
+                               struct svc_fh *res, int createmode,
+                               u32 *verifier, bool *truncp, bool *created);
+__be32         nfsd_commit(struct svc_rqst *, struct svc_fh *,
+                               loff_t, unsigned long);
+#endif /* CONFIG_NFSD_V3 */
+__be32         nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
+                               int, struct file **);
+void           nfsd_close(struct file *);
+struct raparms;
+__be32         nfsd_get_tmp_read_open(struct svc_rqst *, struct svc_fh *,
+                               struct file **, struct raparms **);
+void           nfsd_put_tmp_read_open(struct file *, struct raparms *);
+__be32         nfsd_splice_read(struct svc_rqst *,
+                               struct file *, loff_t, unsigned long *);
+__be32         nfsd_readv(struct file *, loff_t, struct kvec *, int,
+                               unsigned long *);
+__be32                 nfsd_read(struct svc_rqst *, struct svc_fh *,
+                               loff_t, struct kvec *, int, unsigned long *);
+__be32                 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
+                               loff_t, struct kvec *,int, unsigned long *, int *);
+__be32         nfsd_readlink(struct svc_rqst *, struct svc_fh *,
+                               char *, int *);
+__be32         nfsd_symlink(struct svc_rqst *, struct svc_fh *,
+                               char *name, int len, char *path,
+                               struct svc_fh *res);
+__be32         nfsd_link(struct svc_rqst *, struct svc_fh *,
+                               char *, int, struct svc_fh *);
+__be32         nfsd_rename(struct svc_rqst *,
+                               struct svc_fh *, char *, int,
+                               struct svc_fh *, char *, int);
+__be32         nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
+                               char *name, int len);
+__be32         nfsd_readdir(struct svc_rqst *, struct svc_fh *,
+                            loff_t *, struct readdir_cd *, nfsd_filldir_t);
+__be32         nfsd_statfs(struct svc_rqst *, struct svc_fh *,
+                               struct kstatfs *, int access);
+
+__be32         nfsd_permission(struct svc_rqst *, struct svc_export *,
+                               struct dentry *, int);
+
+static inline int fh_want_write(struct svc_fh *fh)
+{
+       int ret = mnt_want_write(fh->fh_export->ex_path.mnt);
+
+       if (!ret)
+               fh->fh_want_write = 1;
+       return ret;
+}
+
+static inline void fh_drop_write(struct svc_fh *fh)
+{
+       if (fh->fh_want_write) {
+               fh->fh_want_write = 0;
+               mnt_drop_write(fh->fh_export->ex_path.mnt);
+       }
+}
+
+static inline __be32 fh_getattr(struct svc_fh *fh, struct kstat *stat)
+{
+       struct path p = {.mnt = fh->fh_export->ex_path.mnt,
+                        .dentry = fh->fh_dentry};
+       return nfserrno(vfs_getattr(&p, stat));
+}
+
+#endif /* LINUX_NFSD_VFS_H */