diff options
| author | ngkaho1234 <ngkaho1234@gmail.com> | 2016-01-26 06:15:35 +0000 |
|---|---|---|
| committer | ngkaho1234 <ngkaho1234@gmail.com> | 2016-01-26 06:15:35 +0000 |
| commit | 9293ce9f84d052c9de71b375ba9f93470cdff456 (patch) | |
| tree | 91a9804bf392c5900da6b56ad96a4eeef134edd8 | |
| parent | cc2ee3402d4a4de0f7827397313f16f3c1b4fa3f (diff) | |
ext4: ext4_chmod now only allows modifying the lowest 12bit of i_mode.
| -rw-r--r-- | lwext4/ext4.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lwext4/ext4.c b/lwext4/ext4.c index 236cb09..38ec6d4 100644 --- a/lwext4/ext4.c +++ b/lwext4/ext4.c @@ -1989,7 +1989,7 @@ uint64_t ext4_fsize(ext4_file *f) int ext4_chmod(const char *path, uint32_t mode) { int r; - uint32_t ino; + uint32_t ino, orig_mode; ext4_file f; struct ext4_sblock *sb; struct ext4_inode_ref inode_ref; @@ -2017,7 +2017,10 @@ int ext4_chmod(const char *path, uint32_t mode) return r; } - ext4_inode_set_mode(sb, inode_ref.inode, mode); + orig_mode = ext4_inode_get_mode(sb, inode_ref.inode); + orig_mode &= ~0xFFF; + orig_mode |= mode & 0xFFF; + ext4_inode_set_mode(sb, inode_ref.inode, orig_mode); inode_ref.dirty = true; r = ext4_fs_put_inode_ref(&inode_ref); |