получить идентификатор сеанса (get session ID)
Имя (Name)
tcgetsid - get session ID
Синопсис (Synopsis)
#define _XOPEN_SOURCE 500 /* See feature_test_macros(7) */
#include <termios.h>
pid_t tcgetsid(int fd);
Описание (Description)
The function tcgetsid() returns the session ID of the current
session that has the terminal associated to fd as controlling
terminal. This terminal must be the controlling terminal of the
calling process.
Возвращаемое значение (Return value)
When fd refers to the controlling terminal of our session, the
function tcgetsid() will return the session ID of this session.
Otherwise, -1 is returned, and errno is set to indicate the
error.
Ошибки (Error)
EBADF fd is not a valid file descriptor.
ENOTTY The calling process does not have a controlling terminal,
or it has one but it is not described by fd.
Версии (Versions)
tcgetsid() is provided in glibc since version 2.1.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│tcgetsid() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008.
Примечание (Note)
This function is implemented via the TIOCGSID ioctl(2), present
since Linux 2.1.71.
Смотри также (See also)
getsid(2)
