Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / jfs / jfs_inode.c

diff --git a/kernel/fs/jfs/jfs_inode.c b/kernel/fs/jfs/jfs_inode.c
new file mode 100644 (file)
index 0000000..6b0f816
--- /dev/null
+++ b/kernel/fs/jfs/jfs_inode.c
@@ -0,0 +1,165 @@
+/*
+ *   Copyright (C) International Business Machines Corp., 2000-2004
+ *
+ *   This program is free software;  you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ *   the GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program;  if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/fs.h>
+#include <linux/quotaops.h>
+#include "jfs_incore.h"
+#include "jfs_inode.h"
+#include "jfs_filsys.h"
+#include "jfs_imap.h"
+#include "jfs_dinode.h"
+#include "jfs_debug.h"
+
+
+void jfs_set_inode_flags(struct inode *inode)
+{
+       unsigned int flags = JFS_IP(inode)->mode2;
+       unsigned int new_fl = 0;
+
+       if (flags & JFS_IMMUTABLE_FL)
+               new_fl |= S_IMMUTABLE;
+       if (flags & JFS_APPEND_FL)
+               new_fl |= S_APPEND;
+       if (flags & JFS_NOATIME_FL)
+               new_fl |= S_NOATIME;
+       if (flags & JFS_DIRSYNC_FL)
+               new_fl |= S_DIRSYNC;
+       if (flags & JFS_SYNC_FL)
+               new_fl |= S_SYNC;
+       inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME |
+                       S_DIRSYNC | S_SYNC);
+}
+
+void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
+{
+       unsigned int flags = jfs_ip->vfs_inode.i_flags;
+
+       jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
+                          JFS_DIRSYNC_FL | JFS_SYNC_FL);
+       if (flags & S_IMMUTABLE)
+               jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
+       if (flags & S_APPEND)
+               jfs_ip->mode2 |= JFS_APPEND_FL;
+       if (flags & S_NOATIME)
+               jfs_ip->mode2 |= JFS_NOATIME_FL;
+       if (flags & S_DIRSYNC)
+               jfs_ip->mode2 |= JFS_DIRSYNC_FL;
+       if (flags & S_SYNC)
+               jfs_ip->mode2 |= JFS_SYNC_FL;
+}
+
+/*
+ * NAME:       ialloc()
+ *
+ * FUNCTION:   Allocate a new inode
+ *
+ */
+struct inode *ialloc(struct inode *parent, umode_t mode)
+{
+       struct super_block *sb = parent->i_sb;
+       struct inode *inode;
+       struct jfs_inode_info *jfs_inode;
+       int rc;
+
+       inode = new_inode(sb);
+       if (!inode) {
+               jfs_warn("ialloc: new_inode returned NULL!");
+               rc = -ENOMEM;
+               goto fail;
+       }
+
+       jfs_inode = JFS_IP(inode);
+
+       rc = diAlloc(parent, S_ISDIR(mode), inode);
+       if (rc) {
+               jfs_warn("ialloc: diAlloc returned %d!", rc);
+               if (rc == -EIO)
+                       make_bad_inode(inode);
+               goto fail_put;
+       }
+
+       if (insert_inode_locked(inode) < 0) {
+               rc = -EINVAL;
+               goto fail_put;
+       }
+
+       inode_init_owner(inode, parent, mode);
+       /*
+        * New inodes need to save sane values on disk when
+        * uid & gid mount options are used
+        */
+       jfs_inode->saved_uid = inode->i_uid;
+       jfs_inode->saved_gid = inode->i_gid;
+
+       /*
+        * Allocate inode to quota.
+        */
+       dquot_initialize(inode);
+       rc = dquot_alloc_inode(inode);
+       if (rc)
+               goto fail_drop;
+
+       /* inherit flags from parent */
+       jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
+
+       if (S_ISDIR(mode)) {
+               jfs_inode->mode2 |= IDIRECTORY;
+               jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
+       }
+       else {
+               jfs_inode->mode2 |= INLINEEA | ISPARSE;
+               if (S_ISLNK(mode))
+                       jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
+       }
+       jfs_inode->mode2 |= inode->i_mode;
+
+       inode->i_blocks = 0;
+       inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+       jfs_inode->otime = inode->i_ctime.tv_sec;
+       inode->i_generation = JFS_SBI(sb)->gengen++;
+
+       jfs_inode->cflag = 0;
+
+       /* Zero remaining fields */
+       memset(&jfs_inode->acl, 0, sizeof(dxd_t));
+       memset(&jfs_inode->ea, 0, sizeof(dxd_t));
+       jfs_inode->next_index = 0;
+       jfs_inode->acltype = 0;
+       jfs_inode->btorder = 0;
+       jfs_inode->btindex = 0;
+       jfs_inode->bxflag = 0;
+       jfs_inode->blid = 0;
+       jfs_inode->atlhead = 0;
+       jfs_inode->atltail = 0;
+       jfs_inode->xtlid = 0;
+       jfs_set_inode_flags(inode);
+
+       jfs_info("ialloc returns inode = 0x%p\n", inode);
+
+       return inode;
+
+fail_drop:
+       dquot_drop(inode);
+       inode->i_flags |= S_NOQUOTA;
+       clear_nlink(inode);
+       unlock_new_inode(inode);
+fail_put:
+       iput(inode);
+fail:
+       return ERR_PTR(rc);
+}