| /* |
| * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| * |
| * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| */ |
| |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <grp.h> |
| #include <sys/types.h> |
| #include <sys/syscall.h> |
| |
| |
| #if !defined __UCLIBC_LINUX_SPECIFIC__ |
| #undef __NR_setresgid |
| #undef __NR_setresgid32 |
| #endif |
| |
| int setegid(gid_t gid) |
| { |
| int result; |
| |
| if (gid == (gid_t) ~0) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| |
| #if (defined __NR_setresgid || defined __NR_setresgid32) && defined __USE_GNU |
| result = setresgid(-1, gid, -1); |
| if (result == -1 && errno == ENOSYS) |
| /* Will also set the saved group ID if egid != gid, |
| * making it impossible to switch back...*/ |
| #endif |
| result = setregid(-1, gid); |
| |
| return result; |
| } |