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| author | Al Viro <viro@zeniv.linux.org.uk> | 2021-02-11 15:04:35 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2021-03-12 22:15:19 -0500 |
| commit | 4ab5260dab28109979a1b47a8996c9922219927f (patch) | |
| tree | 05f8487a30f398b3faf014d0d0860aa4108bf769 /fs/cifs/dir.c | |
| parent | 4a378d8a0d9606e97bddb0389cbc2009c6fc006c (diff) | |
| download | linux-riscv-4ab5260dab28109979a1b47a8996c9922219927f.tar.gz linux-riscv-4ab5260dab28109979a1b47a8996c9922219927f.tar.bz2 linux-riscv-4ab5260dab28109979a1b47a8996c9922219927f.zip | |
do_cifs_create(): don't set ->i_mode of something we had not created
If the file had existed before we'd called ->atomic_open() (without
O_EXCL, that is), we have no more business setting ->i_mode than
we would setting ->i_uid or ->i_gid. We also have no business
doing either if another client has managed to get unlink+mkdir
between ->open() and cifs_inode_get_info().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/cifs/dir.c')
| -rw-r--r-- | fs/cifs/dir.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index a3fb81e0ba17..9d7ae93c8af7 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -418,15 +418,16 @@ cifs_create_get_file_info: if (newinode) { if (server->ops->set_lease_key) server->ops->set_lease_key(newinode, fid); - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) - newinode->i_mode = mode; - if ((*oplock & CIFS_CREATE_ACTION) && - (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) { - newinode->i_uid = current_fsuid(); - if (inode->i_mode & S_ISGID) - newinode->i_gid = inode->i_gid; - else - newinode->i_gid = current_fsgid(); + if ((*oplock & CIFS_CREATE_ACTION) && S_ISREG(newinode->i_mode)) { + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) + newinode->i_mode = mode; + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { + newinode->i_uid = current_fsuid(); + if (inode->i_mode & S_ISGID) + newinode->i_gid = inode->i_gid; + else + newinode->i_gid = current_fsgid(); + } } } } |