diff options
Diffstat (limited to 'fs/cifs/cifsacl.c')
| -rw-r--r-- | fs/cifs/cifsacl.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c index ec445802d903..dabbce00712b 100644 --- a/fs/cifs/cifsacl.c +++ b/fs/cifs/cifsacl.c @@ -138,9 +138,9 @@ static void access_flags_to_mode(__u32 ace_flags, int type, umode_t *pmode, umode_t *pbits_to_set) { /* the order of ACEs is important. The canonical order is to begin with - DENY entries then follow with ALLOW, otherwise an allow entry could be + DENY entries followed by ALLOW, otherwise an allow entry could be encountered first, making the subsequent deny entry like "dead code" - which would be superflous since Windows stops when a match is made + which would be superflous since Windows stops when a match is made for the operation you are trying to perform for your user */ /* For deny ACEs we change the mask so that subsequent allow access @@ -188,6 +188,37 @@ static void access_flags_to_mode(__u32 ace_flags, int type, umode_t *pmode, return; } +/* + Generate access flags to reflect permissions mode is the existing mode. + This function is called for every ACE in the DACL whose SID matches + with either owner or group or everyone. +*/ + +static void mode_to_access_flags(umode_t mode, umode_t bits_to_use, + __u32 *pace_flags) +{ + /* reset access mask */ + *pace_flags = 0x0; + + /* bits to use are either S_IRWXU or S_IRWXG or S_IRWXO */ + mode &= bits_to_use; + + /* check for R/W/X UGO since we do not know whose flags + is this but we have cleared all the bits sans RWX for + either user or group or other as per bits_to_use */ + if (mode & S_IRUGO) + *pace_flags |= SET_FILE_READ_RIGHTS; + if (mode & S_IWUGO) + *pace_flags |= SET_FILE_WRITE_RIGHTS; + if (mode & S_IXUGO) + *pace_flags |= SET_FILE_EXEC_RIGHTS; + +#ifdef CONFIG_CIFS_DEBUG2 + cFYI(1, ("mode: 0x%x, access flags now 0x%x", mode, *pace_flags)); +#endif + return; +} + #ifdef CONFIG_CIFS_DEBUG2 static void dump_ace(struct cifs_ace *pace, char *end_of_acl) |