/* * 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 <pwd.h> #include <sys/types.h> #include <sys/syscall.h> libc_hidden_proto(seteuid) #if defined __NR_setresuid && defined __USE_GNU libc_hidden_proto(setresuid) #endif libc_hidden_proto(setreuid) int seteuid(uid_t uid) { int result; if (uid == (uid_t) ~0) { __set_errno (EINVAL); return -1; } #if defined __NR_setresuid && defined __USE_GNU result = setresuid(-1, uid, -1); if (result == -1 && errno == ENOSYS) /* Will also set the saved user ID if euid != uid, * making it impossible to switch back...*/ #endif result = setreuid(-1, uid); return result; } libc_hidden_def(seteuid)