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ACL_TO_TEXT(3) - Linux manual page online | Library functions

Convert an ACL to text.

March 23, 2002
ACL_FROM_TEXT(3) BSD Library Functions Manual ACL_FROM_TEXT(3)


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 argu‐ ment.


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.


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.


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 <>.
Linux ACL March 23, 2002 Linux ACL
This manual Reference Other manuals
acl_to_text(3) referred by acl(5) | acl_to_any_text(3) | explain(1) | explain(3) | explain_acl_to_text(3) | explain_acl_to_text_or_die(3)
refer to acl(5) | acl_free(3) | acl_from_text(3) | acl_to_any_text(3)
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