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| author | Jeff Mahoney <jeffm@suse.com> | 2009-05-10 16:05:39 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-06-11 21:35:58 -0400 |
| commit | 73422811d290c628b4ddbf6830e5cd6fa42e84f1 (patch) | |
| tree | 9308c36ee82a8217b02848372896209335c69575 | |
| parent | a525890cb6a2949b644d212ae290b658967d3919 (diff) | |
| download | op-kernel-dev-73422811d290c628b4ddbf6830e5cd6fa42e84f1.zip op-kernel-dev-73422811d290c628b4ddbf6830e5cd6fa42e84f1.tar.gz | |
reiserfs: allow exposing privroot w/ xattrs enabled
This patch adds an -oexpose_privroot option to allow access to the privroot.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/reiserfs/dir.c | 10 | ||||
| -rw-r--r-- | fs/reiserfs/super.c | 1 | ||||
| -rw-r--r-- | fs/reiserfs/xattr.c | 3 | ||||
| -rw-r--r-- | include/linux/reiserfs_fs_sb.h | 2 |
4 files changed, 9 insertions, 7 deletions
diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c index 45ee3d3..6d2668f 100644 --- a/fs/reiserfs/dir.c +++ b/fs/reiserfs/dir.c @@ -44,13 +44,11 @@ static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry, static inline bool is_privroot_deh(struct dentry *dir, struct reiserfs_de_head *deh) { - int ret = 0; -#ifdef CONFIG_REISERFS_FS_XATTR struct dentry *privroot = REISERFS_SB(dir->d_sb)->priv_root; - ret = (dir == dir->d_parent && privroot->d_inode && - deh->deh_objectid == INODE_PKEY(privroot->d_inode)->k_objectid); -#endif - return ret; + if (reiserfs_expose_privroot(dir->d_sb)) + return 0; + return (dir == dir->d_parent && privroot->d_inode && + deh->deh_objectid == INODE_PKEY(privroot->d_inode)->k_objectid); } int reiserfs_readdir_dentry(struct dentry *dentry, void *dirent, diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 3567fb9..9dbdcfb 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -898,6 +898,7 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin {"conv",.setmask = 1 << REISERFS_CONVERT}, {"attrs",.setmask = 1 << REISERFS_ATTRS}, {"noattrs",.clrmask = 1 << REISERFS_ATTRS}, + {"expose_privroot", .setmask = 1 << REISERFS_EXPOSE_PRIVROOT}, #ifdef CONFIG_REISERFS_FS_XATTR {"user_xattr",.setmask = 1 << REISERFS_XATTRS_USER}, {"nouser_xattr",.clrmask = 1 << REISERFS_XATTRS_USER}, diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index 8e7deb0..f3d47d8 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -981,7 +981,8 @@ int reiserfs_lookup_privroot(struct super_block *s) strlen(PRIVROOT_NAME)); if (!IS_ERR(dentry)) { REISERFS_SB(s)->priv_root = dentry; - s->s_root->d_op = &xattr_lookup_poison_ops; + if (!reiserfs_expose_privroot(s)) + s->s_root->d_op = &xattr_lookup_poison_ops; if (dentry->d_inode) dentry->d_inode->i_flags |= S_PRIVATE; } else diff --git a/include/linux/reiserfs_fs_sb.h b/include/linux/reiserfs_fs_sb.h index 6473650..dab68bb 100644 --- a/include/linux/reiserfs_fs_sb.h +++ b/include/linux/reiserfs_fs_sb.h @@ -453,6 +453,7 @@ enum reiserfs_mount_options { REISERFS_ATTRS, REISERFS_XATTRS_USER, REISERFS_POSIXACL, + REISERFS_EXPOSE_PRIVROOT, REISERFS_BARRIER_NONE, REISERFS_BARRIER_FLUSH, @@ -490,6 +491,7 @@ enum reiserfs_mount_options { #define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK)) #define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER)) #define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL)) +#define reiserfs_expose_privroot(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_EXPOSE_PRIVROOT)) #define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s)) #define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE)) #define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH)) |
