diff options
| author | Dave Hansen <haveblue@us.ibm.com> | 2008-02-15 14:37:45 -0800 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-04-19 00:25:34 -0400 |
| commit | 75c3f29de7451677c59580b0a959f694f36aac28 (patch) | |
| tree | c82ad50102bfa38f2dc6bb0f763cde9f3dff3790 /fs/namei.c | |
| parent | 463c3197263bd26ac59a00d2484990e17e35c50e (diff) | |
| download | lwn-75c3f29de7451677c59580b0a959f694f36aac28.tar.gz lwn-75c3f29de7451677c59580b0a959f694f36aac28.zip | |
[PATCH] r/o bind mounts: write counts for link/symlink
[AV: add missing nfsd pieces]
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/namei.c b/fs/namei.c index 3fbcf2021a2e..00df735fb509 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2387,7 +2387,12 @@ asmlinkage long sys_symlinkat(const char __user *oldname, if (IS_ERR(dentry)) goto out_unlock; + error = mnt_want_write(nd.path.mnt); + if (error) + goto out_dput; error = vfs_symlink(nd.path.dentry->d_inode, dentry, from, S_IALLUGO); + mnt_drop_write(nd.path.mnt); +out_dput: dput(dentry); out_unlock: mutex_unlock(&nd.path.dentry->d_inode->i_mutex); @@ -2482,7 +2487,12 @@ asmlinkage long sys_linkat(int olddfd, const char __user *oldname, error = PTR_ERR(new_dentry); if (IS_ERR(new_dentry)) goto out_unlock; + error = mnt_want_write(nd.path.mnt); + if (error) + goto out_dput; error = vfs_link(old_nd.path.dentry, nd.path.dentry->d_inode, new_dentry); + mnt_drop_write(nd.path.mnt); +out_dput: dput(new_dentry); out_unlock: mutex_unlock(&nd.path.dentry->d_inode->i_mutex); |