получить разрешенные пользовательские оболочки (get permitted user shells)
Имя (Name)
getusershell, setusershell, endusershell - get permitted user
shells
Синопсис (Synopsis)
#include <unistd.h>
char *getusershell(void);
void setusershell(void);
void endusershell(void);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
getusershell(), setusershell(), endusershell():
Since glibc 2.21:
_DEFAULT_SOURCE
In glibc 2.19 and 2.20:
_DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
Up to and including glibc 2.19:
_BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
Описание (Description)
The getusershell() function returns the next line from the file
/etc/shells, opening the file if necessary. The line should
contain the pathname of a valid user shell. If /etc/shells does
not exist or is unreadable, getusershell() behaves as if /bin/sh
and /bin/csh were listed in the file.
The setusershell() function rewinds /etc/shells.
The endusershell() function closes /etc/shells.
Возвращаемое значение (Return value)
The getusershell() function returns NULL on end-of-file.
Файлы (Files)
/etc/shells
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌────────────────────────────────────┬───────────────┬───────────┐
│Interface │ Attribute │ Value │
├────────────────────────────────────┼───────────────┼───────────┤
│getusershell(), setusershell(), │ Thread safety │ MT-Unsafe │
│endusershell() │ │ │
└────────────────────────────────────┴───────────────┴───────────┘
Стандарты (Conforming to)
4.3BSD.
Смотри также (See also)
shells(5)
