src/udev/udevadm-hwdb.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <getopt.h>
   4
   5 #include "hwdb-util.h"
   6 #include "udevadm.h"
   7 #include "util.h"
   8
   9 static const char *arg_test = NULL;
  10 static const char *arg_root = NULL;
  11 static const char *arg_hwdb_bin_dir = NULL;
  12 static bool arg_update = false;
  13 static bool arg_strict = false;
  14
  15 static int help(void) {
  16         printf("%s hwdb [OPTIONS]\n\n"
  17                "  -h --help            Print this message\n"
  18                "  -V --version         Print version of the program\n"
  19                "  -u --update          Update the hardware database\n"
  20                "  -s --strict          When updating, return non-zero exit value on any parsing error\n"
  21                "     --usr             Generate in " UDEVLIBEXECDIR " instead of /etc/udev\n"
  22                "  -t --test=MODALIAS   Query database and print result\n"
  23                "  -r --root=PATH       Alternative root path in the filesystem\n\n"
  24                "NOTE:\n"
  25                "The sub-command 'hwdb' is deprecated, and is left for backwards compatibility.\n"
  26                "Please use systemd-hwdb instead.\n"
  27                , program_invocation_short_name);
  28
  29         return 0;
  30 }
  31
  32 static int parse_argv(int argc, char *argv[]) {
  33         enum {
  34                 ARG_USR = 0x100,
  35         };
  36
  37         static const struct option options[] = {
  38                 { "update",  no_argument,       NULL, 'u'     },
  39                 { "usr",     no_argument,       NULL, ARG_USR },
  40                 { "strict",  no_argument,       NULL, 's'     },
  41                 { "test",    required_argument, NULL, 't'     },
  42                 { "root",    required_argument, NULL, 'r'     },
  43                 { "version", no_argument,       NULL, 'V'     },
  44                 { "help",    no_argument,       NULL, 'h'     },
  45                 {}
  46         };
  47
  48         int c;
  49
  50         while ((c = getopt_long(argc, argv, "ust:r:Vh", options, NULL)) >= 0)
  51                 switch(c) {
  52                 case 'u':
  53                         arg_update = true;
  54                         break;
  55                 case ARG_USR:
  56                         arg_hwdb_bin_dir = UDEVLIBEXECDIR;
  57                         break;
  58                 case 's':
  59                         arg_strict = true;
  60                         break;
  61                 case 't':
  62                         arg_test = optarg;
  63                         break;
  64                 case 'r':
  65                         arg_root = optarg;
  66                         break;
  67                 case 'V':
  68                         return print_version();
  69                 case 'h':
  70                         return help();
  71                 case '?':
  72                         return -EINVAL;
  73                 default:
  74                         assert_not_reached("Unknown option");
  75                 }
  76
  77         return 1;
  78 }
  79
  80 int hwdb_main(int argc, char *argv[], void *userdata) {
  81         int r;
  82
  83         log_set_max_level_realm(LOG_REALM_SYSTEMD, log_get_max_level());
  84
  85         r = parse_argv(argc, argv);
  86         if (r <= 0)
  87                 return r;
  88
  89         if (!arg_update && !arg_test) {
  90                 log_error("Either --update or --test must be used.");
  91                 return -EINVAL;
  92         }
  93
  94         if (arg_update) {
  95                 r = hwdb_update(arg_root, arg_hwdb_bin_dir, arg_strict, true);
  96                 if (r < 0)
  97                         return r;
  98         }
  99
 100         if (arg_test)
 101                 return hwdb_query(arg_test);
 102
 103         return 0;
 104 }