Путеводитель по Руководству Linux

  User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |



   acl_to_text    ( 3 )

преобразовать ACL в текст (convert an ACL to text)

Имя (Name)

acl_to_text — convert an ACL to text


Библиотека (Library)

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


Синопсис (Synopsis)

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

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


Описание (Description)

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.


Возвращаемое значение (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.


Ошибки (Error)

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.


Стандарты (Conforming to)

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


Смотри также (See also)

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