Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
int
acl_equiv_mode(acl_t acl, mode_t *mode_p)
DESCRIPTION
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_US
ER_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 bits.
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.
RETURN VALUE
Upon successful completion, this function returns the value 0 if acl is
an equivalent ACL, and the value 1 if acl is not an equivalent ACL. Oth
erwise, the value -1 is returned, and errno is set to indicate the error.
ERRORS
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.
STANDARDS
This is a non-portable, Linux specific extension to the ACL manipulation
functions defined in IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned).
SEE ALSO
acl_from_mode(3), acl(5)
AUTHOR
Written by Andreas Gruenbacher <a.gruenbacher@computer.org>.
Linux ACL March 23, 2002 1
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