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     acl_to_text - convert an ACL to text


     Linux Access Control Lists library (libacl, -lacl).


     #include <sys/types.h>
     #include <sys/acl.h>

     char *
     acl_to_text(acl_t acl, ssize_t *len_p);


     The acl_to_text() function translates the ACL pointed to by the argument
     acl into a NULL 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.


     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


     If any of the following conditions occur, the acl_to_text() function
     returns a value of (char *)NULL and sets errno to the corresponding

     [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

     [ENOMEM]           The character string to be returned requires more
                        memory than is allowed by the hardware or system-
                        imposed memory management constraints.


     IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)


     acl_free(3), acl_to_any_text(3), acl(5)


     Derived from the FreeBSD manual pages written by Robert N M Watson
     〈〉, and adapted for Linux by Andreas Gruenbacher