table of contents
ACL_FROM_TEXT(3) | Library Functions Manual | ACL_FROM_TEXT(3) |
NAME¶
acl_to_text — convert an ACL to textLIBRARY¶
Linux Access Control Lists library (libacl, -lacl).SYNOPSIS¶
#include <sys/types.h>#include <sys/acl.h> char *
acl_to_text(acl_t acl, ssize_t *len_p);
DESCRIPTION¶
The acl_to_text() function translates the ACL pointed to by the argument acl into aNULL
terminated character string. If the pointer len_p is not
NULL
, then the function returns the length of the
string (not including the NULL
terminator) in the
location pointed to by len_p. The format of the text
string returned by acl_to_text() is the long text form
defined in acl(5). 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(3)
with the (void*)char returned by
acl_to_text() as an argument.
RETURN VALUE¶
On success, this function returns a pointer to the long text form 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_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 a 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¶
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)SEE ALSO¶
acl_free(3), acl_to_any_text(3), acl(5)AUTHOR¶
Derived from the FreeBSD manual pages written by Robert N M Watson ⟨rwatson@FreeBSD.org⟩, and adapted for Linux by Andreas Gruenbacher ⟨a.gruenbacher@bestbits.at⟩.March 23, 2002 | Linux ACL |