diff options
| author | Sami Kerola | 2011-06-25 14:22:33 +0200 |
|---|---|---|
| committer | Sami Kerola | 2011-06-25 14:24:16 +0200 |
| commit | aa44b95f1268f1b217ad9457669637d2c8eb4b8c (patch) | |
| tree | 2215ac666c07b83960aefdccbd82e7894259d90a /term-utils/write.c | |
| parent | build-sys: move write to term-utils directory (diff) | |
| download | kernel-qcow2-util-linux-aa44b95f1268f1b217ad9457669637d2c8eb4b8c.tar.gz kernel-qcow2-util-linux-aa44b95f1268f1b217ad9457669637d2c8eb4b8c.tar.xz kernel-qcow2-util-linux-aa44b95f1268f1b217ad9457669637d2c8eb4b8c.zip | |
write: long options & new usage
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Diffstat (limited to 'term-utils/write.c')
| -rw-r--r-- | term-utils/write.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/term-utils/write.c b/term-utils/write.c index c4f4ecc42..0b25d9556 100644 --- a/term-utils/write.c +++ b/term-utils/write.c @@ -60,6 +60,7 @@ #include <sys/file.h> #include <sys/time.h> #include <paths.h> +#include <getopt.h> #include "pathnames.h" #include "carefulputc.h" #include "nls.h" @@ -73,17 +74,48 @@ int utmp_chk(char *, char *); static gid_t myegid; +static void __attribute__ ((__noreturn__)) usage(FILE * out) +{ + fprintf(out, _("Usage: %s [options] user [ttyname]\n"), + program_invocation_short_name); + + fprintf(out, _("\nOptions:\n" + " -V, --version output version information and exit\n" + " -h, --help display this help and exit\n\n")); + + exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); +} + int main(int argc, char **argv) { time_t atime; uid_t myuid; - int msgsok, myttyfd; + int msgsok, myttyfd, c; char tty[MAXPATHLEN], *mytty; + static const struct option longopts[] = { + {"version", no_argument, NULL, 'V'}, + {"help", no_argument, NULL, 'h'}, + {NULL, 0, NULL, 0} + }; + setlocale(LC_ALL, ""); bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); + while ((c = getopt_long(argc, argv, "Vh", longopts, NULL)) != -1) + switch (c) { + case 'V': + printf(_("%s from %s\n"), + program_invocation_short_name, + PACKAGE_STRING); + return EXIT_SUCCESS; + case 'h': + usage(stdout); + default: + usage(stderr); + } + myegid = getegid(); /* check that sender has write enabled */ @@ -145,8 +177,7 @@ main(int argc, char **argv) { do_write(argv[2], mytty, myuid); break; default: - (void)fprintf(stderr, _("usage: write user [tty]\n")); - exit(1); + usage(stderr); } done(0); /* NOTREACHED */ |