NAME
acl_to_any_text — convert an ACL to textLIBRARY
Linux Access Control Lists library (libacl, -lacl).SYNOPSIS
#include <sys/types.h>#include <acl/libacl.h> char *
acl_to_any_text(acl_t acl, const char *prefix, char separator, int options);
DESCRIPTION
The acl_to_any_text() function translates the ACL pointed to by the argument acl into aNULL
terminated character string. This character
string is composed of the ACL entries contained in
acl, in the entry text format described on
acl(5). Entries are separated from each other by
the separator character. If the argument
prefix is not (const char
*)NULL
, each entry is prefixed by this character string.
If the argument options is
0
, ACL entries are converted using the entry tag type
keywords user
, group
,
mask
, and other
. User IDs and
group IDs of ACL entries that contain such qualifiers are converted to their
corresponding names; if an identifier has no corresponding name, a decimal
number string is produced. The ACL text representation contains no additional
comments. A bitwise combinations of the following
options can be used to modify the result:
- TEXT_ABBREVIATE
- Instead of the full tag type keywords, single letter
abbreviations are used. The abbreviation for
user
isu
, the abbreviation forgroup
isg
, the abbreviation formask
ism
, and the abbreviation forother
iso
. - TEXT_NUMERIC_IDS
- User IDs and group IDs are included as decimal numbers instead of names.
- TEXT_SOME_EFFECTIVE
- A comment containing the effective permissions of the ACL entry is included after ACL entries that contain permissions which are ineffective because they are masked by an ACL_MASK entry. The ACL entry and the comment are separated by a tab character.
- TEXT_ALL_EFFECTIVE
- A comment containing the effective permissions of the ACL entry is included after all ACL entries that are affected by an ACL_MASK entry. The comment is included even if the permissions contained in the ACL entry equal the effective permissions. The ACL entry and the comment are separated by a tab character.
- TEXT_SMART_INDENT
- This option is used in combination with the TEXT_SOME_EFFECTIVE or TEXT_ALL_EFFECTIVE option. The number of tab characters inserted between the ACL entry and the comment is increased so that the comment is aligned to the fourth tab stop position. A tab width of 8 characters is assumed.
RETURN VALUE
On success, this function returns a pointer to the text representation of the ACL. On error, a value of(char *)NULL
is returned,
and errno is set appropriately.
ERRORS
If any of the following conditions occur, the acl_to_any_text() function returns a value of(char *)NULL
and sets
errno to the corresponding value:
- [
EINVAL
] - The argument acl is not a valid pointer to an ACL. The ACL referenced by acl contains one or more improperly formed ACL entries, or for some other reason cannot be translated into the text form of an ACL.
- [
ENOMEM
] - The character string to be returned requires more memory than is allowed by the hardware or system-imposed memory management constraints.
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_text(3), acl_to_text(3), acl_free(3), acl(5)AUTHOR
Written by Andreas Gruenbacher ⟨[email protected]⟩.March 25, 2002 | Linux ACL |