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util-linux
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write: long options & new usage 

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2011-06-25 14:22:33 +02:00
parent 4aa9d65bfa
commit aa44b95f12
1 changed files with 34 additions and 3 deletions
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37
term-utils/write.c
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@ -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 */