+++ /dev/null
-/*
- * find matching entry in fstab and export it
- *
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <string.h>
-#include <errno.h>
-#include <getopt.h>
-#include <mntent.h>
-#include <sys/stat.h>
-
-#include "libudev.h"
-#include "libudev-private.h"
-
-static int debug;
-
-static void log_fn(struct udev *udev, int priority,
- const char *file, int line, const char *fn,
- const char *format, va_list args)
-{
- if (debug) {
- fprintf(stderr, "%s: ", fn);
- vfprintf(stderr, format, args);
- } else {
- vsyslog(priority, format, args);
- }
-}
-
-static int matches_device_list(struct udev *udev, char **devices, const char *name)
-{
- int i;
-
- for (i = 0; devices[i] != NULL; i++) {
- info(udev, "compare '%s' == '%s'\n", name, devices[i]);
- if (strcmp(devices[i], name) == 0)
- return 1;
- }
- return 0;
-}
-
-static void print_fstab_entry(struct udev *udev, struct mntent *mnt)
-{
- printf("FSTAB_NAME=%s\n", mnt->mnt_fsname);
- printf("FSTAB_DIR=%s\n", mnt->mnt_dir);
- printf("FSTAB_TYPE=%s\n", mnt->mnt_type);
- printf("FSTAB_OPTS=%s\n", mnt->mnt_opts);
- printf("FSTAB_FREQ=%d\n", mnt->mnt_freq);
- printf("FSTAB_PASSNO=%d\n", mnt->mnt_passno);
-}
-
-int main(int argc, char *argv[])
-{
- struct udev *udev;
- static const struct option options[] = {
- { "export", no_argument, NULL, 'x' },
- { "debug", no_argument, NULL, 'd' },
- { "help", no_argument, NULL, 'h' },
- {}
- };
- char **devices;
- FILE *fp;
- struct mntent *mnt;
- int rc = 1;
-
- udev = udev_new();
- if (udev == NULL)
- goto exit;
-
- udev_log_init("fstab_id");
- udev_set_log_fn(udev, log_fn);
-
- while (1) {
- int option;
-
- option = getopt_long(argc, argv, "dxh", options, NULL);
- if (option == -1)
- break;
-
- switch (option) {
- case 'd':
- debug = 1;
- if (udev_get_log_priority(udev) < LOG_INFO)
- udev_set_log_priority(udev, LOG_INFO);
- break;
- case 'h':
- printf("Usage: fstab_id [OPTIONS] name [...]\n"
- " --export print environment keys\n"
- " --debug debug to stderr\n"
- " --help print this help text\n\n");
- goto exit;
- case 'x':
- break;
- default:
- rc = 2;
- goto exit;
- }
- }
-
- devices = &argv[optind];
- if (devices[0] == NULL) {
- fprintf(stderr, "error: missing device(s) to match\n");
- rc = 3;
- goto exit;
- }
-
- fp = setmntent ("/etc/fstab", "r");
- if (fp == NULL) {
- fprintf(stderr, "error: opening fstab: %s\n", strerror(errno));
- rc = 4;
- goto exit;
- }
-
- while (1) {
- mnt = getmntent(fp);
- if (mnt == NULL)
- break;
-
- info(udev, "found '%s'@'%s'\n", mnt->mnt_fsname, mnt->mnt_dir);
-
- /* skip root device */
- if (strcmp(mnt->mnt_dir, "/") == 0)
- continue;
-
- /* match LABEL */
- if (strncmp(mnt->mnt_fsname, "LABEL=", 6) == 0) {
- const char *label;
- char str[256];
-
- label = &mnt->mnt_fsname[6];
- if (label[0] == '"' || label[0] == '\'') {
- char *pos;
-
- util_strscpy(str, sizeof(str), &label[1]);
- pos = strrchr(str, label[0]);
- if (pos == NULL)
- continue;
- pos[0] = '\0';
- label = str;
- }
- if (matches_device_list(udev, devices, label)) {
- print_fstab_entry(udev, mnt);
- rc = 0;
- break;
- }
- continue;
- }
-
- /* match UUID */
- if (strncmp(mnt->mnt_fsname, "UUID=", 5) == 0) {
- const char *uuid;
- char str[256];
-
- uuid = &mnt->mnt_fsname[5];
- if (uuid[0] == '"' || uuid[0] == '\'') {
- char *pos;
-
- util_strscpy(str, sizeof(str), &uuid[1]);
- pos = strrchr(str, uuid[0]);
- if (pos == NULL)
- continue;
- pos[0] = '\0';
- uuid = str;
- }
- if (matches_device_list(udev, devices, uuid)) {
- print_fstab_entry(udev, mnt);
- rc = 0;
- break;
- }
- continue;
- }
-
- /* only devices */
- if (strncmp(mnt->mnt_fsname, udev_get_dev_path(udev), strlen(udev_get_dev_path(udev))) != 0)
- continue;
-
- if (matches_device_list(udev, devices, &mnt->mnt_fsname[strlen(udev_get_dev_path(udev))+1])) {
- print_fstab_entry(udev, mnt);
- rc = 0;
- break;
- }
- }
- endmntent(fp);
-
-exit:
- udev_unref(udev);
- udev_log_close();
- return rc;
-}