src/udev/udevadm-hwdb.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <getopt.h>
   4
   5 #include "hwdb-util.h"
   6 #include "udevadm.h"
   7
   8 static const char *arg_test = NULL;
   9 static const char *arg_root = NULL;
  10 static const char *arg_hwdb_bin_dir = NULL;
  11 static bool arg_update = false;
  12 static bool arg_strict = false;
  13
  14 static int help(void) {
  15         printf("%s hwdb [OPTIONS]\n\n"
  16                "  -h --help            Print this message\n"
  17                "  -V --version         Print version of the program\n"
  18                "  -u --update          Update the hardware database\n"
  19                "  -s --strict          When updating, return non-zero exit value on any parsing error\n"
  20                "     --usr             Generate in " UDEVLIBEXECDIR " instead of /etc/udev\n"
  21                "  -t --test=MODALIAS   Query database and print result\n"
  22                "  -r --root=PATH       Alternative root path in the filesystem\n\n"
  23                "NOTE:\n"
  24                "The sub-command 'hwdb' is deprecated, and is left for backwards compatibility.\n"
  25                "Please use systemd-hwdb instead.\n",
  26                program_invocation_short_name);
  27
  28         return 0;
  29 }
  30
  31 static int parse_argv(int argc, char *argv[]) {
  32         enum {
  33                 ARG_USR = 0x100,
  34         };
  35
  36         static const struct option options[] = {
  37                 { "update",  no_argument,       NULL, 'u'     },
  38                 { "usr",     no_argument,       NULL, ARG_USR },
  39                 { "strict",  no_argument,       NULL, 's'     },
  40                 { "test",    required_argument, NULL, 't'     },
  41                 { "root",    required_argument, NULL, 'r'     },
  42                 { "version", no_argument,       NULL, 'V'     },
  43                 { "help",    no_argument,       NULL, 'h'     },
  44                 {}
  45         };
  46
  47         int c;
  48
  49         while ((c = getopt_long(argc, argv, "ust:r:Vh", options, NULL)) >= 0)
  50                 switch (c) {
  51                 case 'u':
  52                         arg_update = true;
  53                         break;
  54                 case ARG_USR:
  55                         arg_hwdb_bin_dir = UDEVLIBEXECDIR;
  56                         break;
  57                 case 's':
  58                         arg_strict = true;
  59                         break;
  60                 case 't':
  61                         arg_test = optarg;
  62                         break;
  63                 case 'r':
  64                         arg_root = optarg;
  65                         break;
  66                 case 'V':
  67                         return print_version();
  68                 case 'h':
  69                         return help();
  70                 case '?':
  71                         return -EINVAL;
  72                 default:
  73                         assert_not_reached();
  74                 }
  75
  76         return 1;
  77 }
  78
  79 int hwdb_main(int argc, char *argv[], void *userdata) {
  80         int r;
  81
  82         r = parse_argv(argc, argv);
  83         if (r <= 0)
  84                 return r;
  85
  86         if (!arg_update && !arg_test)
  87                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
  88                                        "Either --update or --test must be used.");
  89
  90         log_notice("udevadm hwdb is deprecated. Use systemd-hwdb instead.");
  91
  92         if (arg_update && !hwdb_bypass()) {
  93                 r = hwdb_update(arg_root, arg_hwdb_bin_dir, arg_strict, true);
  94                 if (r < 0)
  95                         return r;
  96         }
  97
  98         if (arg_test)
  99                 return hwdb_query(arg_test, NULL);
 100
 101         return 0;
 102 }