|ACL_CALC_MASK(3)||FreeBSD Library Functions Manual||ACL_CALC_MASK(3)|
NAMEacl_calc_mask — calculate and set ACL mask permissions
LIBRARYStandard C Library (libc, -lc)
DESCRIPTIONThe acl_calc_mask() function is a POSIX.1e call that calculates and set the permissions associated with the ACL_MASK ACL entry of the ACL referred to by acl_p.
The value of new permissions are the union of the permissions granted by the ACL_GROUP, ACL_GROUP_OBJ, ACL_USER tag types which match processes in the file group class contained in the ACL referred to by acl_p.
If the ACL referred to by acl_p already contains an ACL_MASK entry, its permissions shall be overwritten; if it does not contain an ACL_MASK entry, one shall be added.
RETURN VALUESThe acl_calc_mask() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
ERRORSThe acl_calc_mask() function fails if:
- [ EINVAL]
- Argument acl_p does not point to a pointer to a valid ACL.
STANDARDSPOSIX.1e is described in IEEE POSIX.1e draft 17.
HISTORYPOSIX.1e support was introduced in FreeBSD 4.0. The acl_calc_mask() function was added in FreeBSD 5.0.
AUTHORSThe acl_calc_mask() function was written by <email@example.com>.
|March 10, 2001||FreeBSD|