ACL_FROM_TEXT

Section: C Library Functions (3)
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BSD mandoc
Linux ACL

NAME

acl_to_text - convert an ACL to text

LIBRARY

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

SYNOPSIS

In sys/types.h In sys/acl.h Ft char * Fn acl_to_text acl_t acl ssize_t *len_p

DESCRIPTION

The Fn 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 Fn 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_free3 with the (void*)char returned by Fn 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 Fn acl_to_text function returns a value of (char *)NULL and sets errno to the corresponding value:

Bq Er 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.
Bq Er 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)

AUTHOR

Derived from the FreeBSD manual pages written by An Robert N M Watson Aq rwatson@FreeBSD.org , and adapted for Linux by An Andreas Gruenbacher Aq a.gruenbacher@bestbits.at .