получить личность пользователя (get user identity)
Имя (Name)
getuid, geteuid - get user identity
Синопсис (Synopsis)
#include <unistd.h>
uid_t getuid(void);
uid_t geteuid(void);
Описание (Description)
getuid() returns the real user ID of the calling process.
geteuid() returns the effective user ID of the calling process.
Ошибки (Error)
These functions are always successful and never modify errno.
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, 4.3BSD.
Примечание (Note)
History
In UNIX V6 the getuid() call returned (euid << 8) + uid. UNIX V7
introduced separate calls getuid() and geteuid().
The original Linux getuid() and geteuid() system calls supported
only 16-bit user IDs. Subsequently, Linux 2.4 added getuid32()
and geteuid32(), supporting 32-bit IDs. The glibc getuid() and
geteuid() wrapper functions transparently deal with the
variations across kernel versions.
On Alpha, instead of a pair of getuid() and geteuid() system
calls, a single getxuid() system call is provided, which returns
a pair of real and effective UIDs. The glibc getuid() and
geteuid() wrapper functions transparently deal with this. See
syscall(2) for details regarding register mapping.
Смотри также (See also)
getresuid(2), setreuid(2), setuid(2), credentials(7)
