acl_equiv_mode man page on Archlinux

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ACL_EQUIV_MODE(3)	 BSD Library Functions Manual	     ACL_EQUIV_MODE(3)

     acl_equiv_mode — check for an equivalent ACL

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

     #include <sys/types.h>
     #include <acl/libacl.h>

     acl_equiv_mode(acl_t acl, mode_t *mode_p);

     The acl_equiv_mode() function checks if the ACL pointed to by the argu‐
     ment acl contains only the required ACL entries of tag types
     ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, and contains no permissions
     other that ACL_READ, ACL_WRITE or ACL_EXECUTE.  If the ACL has this form,
     it can can be fully represented with the traditional file permission
     bits, and is considered equivalent with the traditional file permission

     If acl is an equivalent ACL and the pointer mode_p is not NULL, the value
     pointed to by mode_p is set to the value that defines the same owner,
     group and other permissions as contained in the ACL.

     On success, this function returns the value 0 if acl is an equivalent
     ACL, and the value 1 if acl is not an equivalent ACL. On error, the value
     -1 is returned, and errno is set appropriately.

     If any of the following conditions occur, the acl_equiv_mode() function
     returns the value -1 and sets errno to the corresponding value:

     [EINVAL]		The argument acl is not a valid pointer to an ACL.

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

     acl_from_mode(3), acl(5)

     Written by Andreas Gruenbacher ⟨⟩.

Linux ACL			March 23, 2002			     Linux ACL

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