90 lines
1.6 KiB
C
90 lines
1.6 KiB
C
/*
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* Copyright (C) 2013 Karel Zak <kzak@redhat.com>
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*/
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include "c.h"
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#include "nls.h"
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#include "pathnames.h"
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/*
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* Always return EXIT_FAILURE (1), don't try to be smart!
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*/
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static void __attribute__((__noreturn__)) usage(void)
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{
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FILE *out = stdout;
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fputs(USAGE_HEADER, out);
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fprintf(out,
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_(" %s [options]\n"), program_invocation_short_name);
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fputs(USAGE_SEPARATOR, out);
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fputs(_("Politely refuse a login.\n"), out);
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fputs(USAGE_OPTIONS, out);
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printf(USAGE_HELP_OPTIONS(16));
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printf(USAGE_MAN_TAIL("nologin(8)"));
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exit(EXIT_FAILURE);
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}
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int main(int argc, char *argv[])
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{
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int c, fd = -1;
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struct stat st;
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static const struct option longopts[] = {
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{ "help", 0, NULL, 'h' },
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{ "version", 0, NULL, 'V' },
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{ NULL, 0, NULL, 0 }
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};
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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while ((c = getopt_long(argc, argv, "hV", longopts, NULL)) != -1) {
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switch (c) {
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case 'h':
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usage();
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break;
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case 'V':
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printf(UTIL_LINUX_VERSION);
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return EXIT_FAILURE;
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default:
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errtryhelp(EXIT_FAILURE);
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}
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}
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fd = open(_PATH_NOLOGIN_TXT, O_RDONLY);
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if (fd < 0)
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goto dflt;
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c = fstat(fd, &st);
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if (c < 0 || !S_ISREG(st.st_mode))
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goto dflt;
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else {
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char buf[BUFSIZ];
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ssize_t rd;
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while ((rd = read(fd, buf, sizeof(buf))) > 0)
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ignore_result( write(STDOUT_FILENO, buf, rd) );
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close(fd);
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return EXIT_FAILURE;
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}
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dflt:
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if (fd >= 0)
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close(fd);
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fprintf(stdout, _("This account is currently not available.\n"));
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return EXIT_FAILURE;
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}
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