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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-08-15 23:33:57 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-10-23 09:24:35 +0900 |
| commit | dc3d3b810a644dfa329efaa230cd514226f8981d (patch) | |
| tree | e0a2c2bfb3edb6b1fa4383cb2d1f52adb653c9e2 /fs/nilfs2/namei.c | |
| parent | fd52202930b7e8db48bee5a6fc6b1f438e822a23 (diff) | |
| download | lwn-dc3d3b810a644dfa329efaa230cd514226f8981d.tar.gz lwn-dc3d3b810a644dfa329efaa230cd514226f8981d.zip | |
nilfs2: deny write access to inodes in snapshots
Snapshots of nilfs are read-only.
After super block instances (sb) will be unified, nilfs will need to
check write access by a way other than implicit test with
IS_RDONLY(inode). This is because IS_RDONLY() refers to MS_RDONLY bit
of inode->i_sb->s_flags and it will become inaccurate after the
unification of sb.
To prepare for the issue, this uses i_op->permission to deny write
access to inodes in snapshots.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/namei.c')
| -rw-r--r-- | fs/nilfs2/namei.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c index a65f46560fbe..185d1607cb00 100644 --- a/fs/nilfs2/namei.c +++ b/fs/nilfs2/namei.c @@ -588,6 +588,7 @@ const struct inode_operations nilfs_symlink_inode_operations = { .readlink = generic_readlink, .follow_link = page_follow_link_light, .put_link = page_put_link, + .permission = nilfs_permission, }; const struct export_operations nilfs_export_ops = { |