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util-linux
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vipw: add usage() function 

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2013-04-02 20:42:55 +01:00 committed by Karel Zak
parent 2dc87166a7
commit cc8e993401
1 changed files with 19 additions and 4 deletions
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23
login-utils/vipw.c
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@ -302,6 +302,17 @@ static void edit_file(int is_shadow)
ulckpwdf();
}
static void __attribute__((__noreturn__)) usage(FILE *out)
{
fputs(USAGE_HEADER, out);
fprintf(out, " %s\n", program_invocation_short_name);
fputs(USAGE_OPTIONS, out);
fputs(USAGE_HELP, out);
fputs(USAGE_VERSION, out);
fprintf(out, USAGE_MAN_TAIL("vipw(8)"));
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
setlocale(LC_ALL, "");
@ -317,10 +328,14 @@ int main(int argc, char *argv[])
xstrncpy(orig_file, PASSWD_FILE, sizeof(orig_file));
}
if ((argc > 1) &&
(!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version"))) {
printf(UTIL_LINUX_VERSION);
exit(EXIT_SUCCESS);
if (1 < argc) {
if (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")) {
printf(UTIL_LINUX_VERSION);
exit(EXIT_SUCCESS);
}
if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
usage(stdout);
usage(stderr);
}
edit_file(0);