Validate an access control list (ACL)
Synopsis:
#include <sys/acl.h>
int acl_valid( acl_t acl );
Arguments:
- acl
- A pointer to the ACL that you want to check.
Library:
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
Description:
The acl_valid() function checks an access control list to make sure it's valid:
- The ACL must have one each of the ACL_USER_OBJ, ACL_GROUP_OBJ,
and ACL_OTHER entries.
- If the ACL has any ACL_USER (named user) or
ACL_GROUP (named group) entries, there must be one ACL_MASK entry.
- There must not be more than one entry for the same named user or group.
Returns:
0, or -1 if an error occurred
(errno
is set).
Errors:
- EINVAL
- The ACL is missing some of the required entries or there are entries that aren't unique.
- ENOTSUP
- The ACL type isn't ACL_TYPE_ACCESS or ACL_TYPE_DEFAULT.
Classification:
QNX Neutrino
This function is based on the withdrawn POSIX draft P1003.1e.
| Safety: |
|
|---|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
No |
| Thread |
Yes |