acl_from_mode — create an ACL from file permission bits

Written by Andreas Gruenbacher <andreas.gruenbacher@gmail.com>. Linux ACL March 23, 2002 ACL_FROM_MODE(3)

The acl_from_mode() function creates a minimal ACL that contains the three entries with tag types ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, with permissions corresponding to the owner, group, and other permission bits of its argument mode.

If any of the following conditions occur, the acl_from_mode() function returns a value of (acl_t)NULL and sets errno to the corresponding value: [ENOMEM] The ACL working storage requires more memory than is allowed by the hardware or system-imposed memory management constraints.

Linux Access Control Lists library (libacl, -lacl).

acl_from_mode — create an ACL from file permission bits

On success, this function returns a pointer to the working storage. On error, a value of (acl_t)NULL is returned, and errno is set appropriately.

acl_equiv_mode(3), acl_get_file(3), acl(5)

This is a non-portable, Linux specific extension to the ACL manipulation functions defined in IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned).

#include<sys/types.h>#include<acl/libacl.h>acl_tacl_from_mode(mode_tmode);