diff options
Diffstat (limited to 'tty.c')
| -rw-r--r-- | tty.c | 25 |
1 files changed, 15 insertions, 10 deletions
@@ -1,3 +1,4 @@ +/* vi: set sw=4 ts=4: */ /* * Mini tty implementation for busybox * @@ -24,19 +25,23 @@ #include <sys/types.h> static const char tty_usage[] = "tty\n\n" -"Print the file name of the terminal connected to standard input.\n" -"\t-s\tprint nothing, only return an exit status\n"; + "Print the file name of the terminal connected to standard input.\n" -extern int tty_main(int argc, char **argv) { + "\t-s\tprint nothing, only return an exit status\n"; + +extern int tty_main(int argc, char **argv) +{ char *tty; if (argc > 1) { - if (argv[1][0] != '-' || argv[1][1] != 's') usage (tty_usage); - } - else { - tty = ttyname (0); - if (tty) puts (tty); - else puts ("not a tty"); + if (argv[1][0] != '-' || argv[1][1] != 's') + usage(tty_usage); + } else { + tty = ttyname(0); + if (tty) + puts(tty); + else + puts("not a tty"); } - exit (isatty (0) ? TRUE : FALSE); + exit(isatty(0) ? TRUE : FALSE); } |