| /* 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 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]); |
| } |