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ACL_CALC_MASK (3) | C library functions | Unix Manual Pages | :man

NAME

acl_calc_mask - calculate and set ACL mask permissions

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards
History
Authors

LIBRARY


.Lb libc

SYNOPSIS


.In sys/types.h
.In sys/acl.h int acl_calc_mask "acl_t *acl_p"

DESCRIPTION

The acl_calc_mask function is a POSIX.1e call that calculates and set the permissions associated with the ACL_MASK ACL entry of the ACL referred to by acl_p.

The value of new permissions are the union of the permissions granted by the ACL_GROUP, ACL_GROUP_OBJ, ACL_USER tag types which match processes in the file group class contained in the ACL referred to by acl_p.

If the ACL referred to by acl_p already contains an ACL_MASK entry, its permissions shall be overwritten; if it does not contain an ACL_MASK entry, one shall be added.

RETURN VALUES


.Rv -std acl_calc_mask

ERRORS

The acl_calc_mask function fails if:
[EINVAL]
Argument acl_p does not point to a pointer to a valid ACL.

SEE ALSO

acl(3), acl_get_entry(3), acl_valid(3), posix1e(3)

STANDARDS

HISTORY

AUTHORS


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