ACL_TO_TEXT(3) | Library Functions Manual | ACL_TO_TEXT(3) |
acl_to_text
, acl_to_text_np
—
#include <sys/types.h>
#include <sys/acl.h>
char *
acl_to_text
(acl_t
acl, ssize_t
*len_p);
char *
acl_to_text_np
(acl_t
acl, ssize_t
*len_p, int
flags);
acl_to_text
() and
acl_to_text_np
() functions translate the ACL pointed
to by argument acl into a NULL terminated character
string. If the pointer len_p is not NULL, then the
function shall return the length of the string (not including the NULL
terminator) in the location pointed to by len_p. If the
ACL is POSIX.1e, the format of the text string returned by
acl_to_text
() shall be the POSIX.1e long ACL form. If
the ACL is NFSv4, the format of the text string shall be the compact form,
unless the ACL_TEXT_VERBOSE flag is given.
The flags specified are formed by or'ing the following values
ACL_TEXT_VERBOSE | Format ACL using verbose form |
ACL_TEXT_NUMERIC_IDS | Do not resolve IDs into user or group names |
ACL_TEXT_APPEND_ID | In addition to user and group names, append numeric IDs |
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 as an argument.
acl_to_text
() function shall return a value of
(acl_t)NULL and set errno to the
corresponding value:
EINVAL
]The ACL denoted 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
]acl_from_text
() and
acl_to_text
() functions rely on the
getpwent(3) library calls to
manage username and uid mapping, as well as the
getgrent(3) library calls to
manage groupname and gid mapping. These calls are not thread safe, and so
transitively, neither are acl_from_text
() and
acl_to_text
(). These functions may also interfere with
stateful calls associated with the getpwent
() and
getgrent
() calls.
June 25, 2009 | NetBSD 10.0 |