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acl_set_qualifier(3) -- Linux man page
NAME
acl_set_qualifier
- set the qualifier of an ACL entry
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
In sys/types.h
In sys/acl.h
Ft int
Fn acl_set_qualifier acl_entry_t entry_d const void *qualifier_p
DESCRIPTION
The
Fn 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,
Fn 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
Fn acl_free
with a pointer to the ACL as argument.
RETURN VALUE
Rv -std acl_set_qualifier
ERRORS
If any of the following conditions occur, the
Fn acl_set_qualifier
function returns
-1
and sets
errno
to the corresponding value:
- Bq Er 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.
- Bq Er ENOMEM
-
The
Fn acl_set_qualifier
function is unable to allocate the memory required for the ACL qualifier.
STANDARDS
IEEE Std 1003.1e draft 17 (lqPOSIX.1erq, abandoned)
SEE ALSO
acl_create_entry3,
acl_free3,
acl_get_permset3,
acl_get_qualifier3,
acl_get_tag_type3,
acl_set_entry3,
acl_set_permset3,
acl_set_tag_type3,
acl(5)
AUTHOR
Derived from the FreeBSD manual pages written by
An Robert N M Watson Aq rwatson@FreeBSD.org ,
and adapted for Linux by
An Andreas Gruenbacher Aq a.gruenbacher@computer.org .
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