acl_calc_mask()
QNX SDP8.0C Library ReferenceAPIDeveloper
Calculate the group class mask for an access control list (ACL)
Synopsis:
#include <sys/acl.h>
int acl_calc_mask( acl_t *acl_p );
Arguments:
- acl_p
- The address of a pointer to the ACL whose mask you want to calculate.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The acl_calc_mask() function calculates the file group mask for an ACL, as the union of the permissions granted by the ACL_GROUP (named group), ACL_GROUP_OBJ (owning group), and ACL_USER (named user) tags. If the ACL already has a mask entry, the function updates it; otherwise it adds a mask entry.
Returns:
0, or -1 if an error occurred (errno is set).
Errors:
- ENOMEM
- There wasn't enough memory available to allocate space for a new mask entry.
Classification:
This function is based on the withdrawn POSIX draft P1003.1e.
| Safety: | |
|---|---|
| Cancellation point | No |
| Signal handler | No |
| Thread | Yes |
Page updated: