acl_set_qualifier(3) — Linux manual page

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | AUTHOR | COLOPHON

ACL_SET_QUALIFIER(3)     Library Functions Manual   ACL_SET_QUALIFIER(3)

NAME         top

       acl_set_qualifier — set the qualifier of an ACL entry

LIBRARY         top

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

SYNOPSIS         top

       <sys/types.h> <sys/acl.h> int acl_set_qualifier(acl_entry_t
       entry_d, const void *qualifier_p)

DESCRIPTION         top

       The acl_set_qualifier() function sets the qualifier of the ACL
       entry indicated by the argument entry_d to the value referred to
       by the argument qualifier_p.  If the value of the tag type in the
       ACL entry referred to by entry_d is ACL_USER, then the value
       referred to by qualifier_p shall be of type uid_t.  If the value
       of the tag type in the ACL entry referred to by entry_d is
       ACL_GROUP, then the value referred to by qualifier_p shall be of
       type gid_t.  If the value of the tag type in the ACL entry
       referred to by entry_d is a tag type for which a qualifier is not
       supported, acl_set_qualifier() returns an error.

       Any ACL entry descriptors that refer to the entry referred to by
       entry_d continue to refer to that entry. This function may cause
       memory to be allocated. The caller should free any releasable
       memory, when the ACL is no longer required, by calling acl_free()
       with a pointer to the ACL as argument.

RETURN VALUE         top

       The acl_set_qualifier() function returns the value 0 if
       successful; otherwise the value -1 is returned and the global
       variable errno is set to indicate the error.

ERRORS         top

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

       [EINVAL]           The argument entry_d is not a valid descriptor
                          for an ACL entry.

                          The value of the tag type in the ACL entry
                          referenced by the argument entry_d is neither
                          ACL_USER nor ACL_GROUP.

                          The value pointed to by the argument
                          qualifier_p is not valid.

       [ENOMEM]           The acl_set_qualifier() function is unable to
                          allocate the memory required for the ACL
                          qualifier.

STANDARDS         top

       IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)

SEE ALSO         top

       acl_create_entry(3), acl_free(3), acl_get_permset(3),
       acl_get_qualifier(3), acl_get_tag_type(3), acl_set_entry(3),
       acl_set_permset(3), acl_set_tag_type(3), acl(5)

AUTHOR         top

       Derived from the FreeBSD manual pages written by Robert N M
       Watson <rwatson@FreeBSD.org>, and adapted for Linux by Andreas
       Gruenbacher <andreas.gruenbacher@gmail.com>.

COLOPHON         top

       This page is part of the acl (manipulating access control lists)
       project.  Information about the project can be found at
       http://savannah.nongnu.org/projects/acl.  If you have a bug
       report for this manual page, see
       ⟨http://savannah.nongnu.org/bugs/?group=acl⟩.  This page was
       obtained from the project's upstream Git repository
       ⟨git://git.savannah.nongnu.org/acl.git⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-12-01.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

Linux ACL                    March 23, 2002         ACL_SET_QUALIFIER(3)