/* vi: set sw=4 ts=4: */ /* * Linux32/linux64 allows for changing uname emulation. * * Copyright 2002 Andi Kleen, SuSE Labs. * * Licensed under GPL v2 or later, see file License for details. */ #include <stdlib.h> #include <unistd.h> #include <string.h> #include <errno.h> #include <stdio.h> #include <sys/personality.h> #include "busybox.h" int setarch_main(int ATTRIBUTE_UNUSED argc, char **argv) { int pers = -1; /* Figure out what personality we are supposed to switch to ... * we can be invoked as either: * argv[0],argv[1] -> "setarch","personality" * argv[0] -> "personality" */ retry: if (argv[0][5] == '6') /* linux64 */ pers = PER_LINUX; else if (argv[0][5] == '3') /* linux32 */ pers = PER_LINUX32; else if (pers == -1 && argv[1] != NULL) { pers = PER_LINUX32; ++argv; goto retry; } /* make user actually gave us something to do */ ++argv; if (argv[0] == NULL) bb_show_usage(); /* Try to set personality */ if (personality(pers) >= 0) { /* Try to execute the program */ execvp(argv[0], argv); } bb_perror_msg_and_die("%s", argv[0]); }