| bigbiff bigbiff | e60683a | 2013-02-22 20:55:50 -0500 | [diff] [blame] | 1 | #include <stdlib.h> |
| 2 | #include <string.h> |
| 3 | #include <unistd.h> |
| 4 | #include <sys/types.h> |
| 5 | |
| 6 | #include "nls.h" |
| 7 | #include "c.h" |
| 8 | #include "xalloc.h" |
| 9 | |
| 10 | #include "exec_shell.h" |
| 11 | |
| 12 | #define DEFAULT_SHELL "/bin/sh" |
| 13 | |
| 14 | void __attribute__((__noreturn__)) exec_shell(void) { |
| 15 | const char *shell = getenv("SHELL"), *shell_basename; |
| 16 | char *arg0; |
| 17 | if (!shell) |
| 18 | shell = DEFAULT_SHELL; |
| 19 | |
| 20 | shell_basename = basename(shell); |
| 21 | arg0 = xmalloc(strlen(shell_basename) + 2); |
| 22 | arg0[0] = '-'; |
| 23 | strcpy(arg0 + 1, shell_basename); |
| 24 | |
| 25 | execl(shell, arg0, NULL); |
| 26 | err(EXIT_FAILURE, _("failed to execute %s"), shell); |
| 27 | } |