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ACL_TO_ANY_TEXT(3) BSD Library Functions Manual ACL_TO_ANY_TEXT(3)
NAME
acl_to_any_text -- convert an ACL to text
LIBRARY
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 a NULL
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 qual-
ifiers 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 addi-
tional 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 is u, the abbreviation for group is g, the abbrevia-
tion for mask is m, and the abbreviation for other is o.
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 effec-
tive permissions. The ACL entry and the comment are separated by a tab charac-
ter.
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.
The ACL referred to by acl is not changed.
This function allocates any memory necessary to contain the string and returns a pointer to
the string. The caller should free any releasable memory, when the new string is no longer
required, by calling acl_free() with the (void*)char returned by acl_to_any_text() as an
argument.
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 <a.gruenbacher AT bestbits.at>.
Linux ACL March 25, 2002 Linux ACL
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