Line data    Source code

       1             : /* SPDX-License-Identifier: LGPL-2.1+ */
       2             : 
       3             : #include <getopt.h>
       4             : #include <stdio.h>
       5             : #include <string.h>
       6             : 
       7             : #include "device-private.h"
       8             : #include "device-util.h"
       9             : #include "string-util.h"
      10             : #include "strv.h"
      11             : #include "udev-builtin.h"
      12             : 
      13             : static bool initialized;
      14             : 
      15             : static const UdevBuiltin *const builtins[_UDEV_BUILTIN_MAX] = {
      16             : #if HAVE_BLKID
      17             :         [UDEV_BUILTIN_BLKID] = &udev_builtin_blkid,
      18             : #endif
      19             :         [UDEV_BUILTIN_BTRFS] = &udev_builtin_btrfs,
      20             :         [UDEV_BUILTIN_HWDB] = &udev_builtin_hwdb,
      21             :         [UDEV_BUILTIN_INPUT_ID] = &udev_builtin_input_id,
      22             :         [UDEV_BUILTIN_KEYBOARD] = &udev_builtin_keyboard,
      23             : #if HAVE_KMOD
      24             :         [UDEV_BUILTIN_KMOD] = &udev_builtin_kmod,
      25             : #endif
      26             :         [UDEV_BUILTIN_NET_ID] = &udev_builtin_net_id,
      27             :         [UDEV_BUILTIN_NET_LINK] = &udev_builtin_net_setup_link,
      28             :         [UDEV_BUILTIN_PATH_ID] = &udev_builtin_path_id,
      29             :         [UDEV_BUILTIN_USB_ID] = &udev_builtin_usb_id,
      30             : #if HAVE_ACL
      31             :         [UDEV_BUILTIN_UACCESS] = &udev_builtin_uaccess,
      32             : #endif
      33             : };
      34             : 
      35           0 : void udev_builtin_init(void) {
      36             :         unsigned i;
      37             : 
      38           0 :         if (initialized)
      39           0 :                 return;
      40             : 
      41           0 :         for (i = 0; i < _UDEV_BUILTIN_MAX; i++)
      42           0 :                 if (builtins[i] && builtins[i]->init)
      43           0 :                         builtins[i]->init();
      44             : 
      45           0 :         initialized = true;
      46             : }
      47             : 
      48           0 : void udev_builtin_exit(void) {
      49             :         unsigned i;
      50             : 
      51           0 :         if (!initialized)
      52           0 :                 return;
      53             : 
      54           0 :         for (i = 0; i < _UDEV_BUILTIN_MAX; i++)
      55           0 :                 if (builtins[i] && builtins[i]->exit)
      56           0 :                         builtins[i]->exit();
      57             : 
      58           0 :         initialized = false;
      59             : }
      60             : 
      61           0 : bool udev_builtin_validate(void) {
      62             :         unsigned i;
      63             : 
      64           0 :         for (i = 0; i < _UDEV_BUILTIN_MAX; i++)
      65           0 :                 if (builtins[i] && builtins[i]->validate && builtins[i]->validate())
      66           0 :                         return true;
      67           0 :         return false;
      68             : }
      69             : 
      70           0 : void udev_builtin_list(void) {
      71             :         unsigned i;
      72             : 
      73           0 :         for (i = 0; i < _UDEV_BUILTIN_MAX; i++)
      74           0 :                 if (builtins[i])
      75           0 :                         fprintf(stderr, "  %-14s  %s\n", builtins[i]->name, builtins[i]->help);
      76           0 : }
      77             : 
      78           0 : const char *udev_builtin_name(UdevBuiltinCommand cmd) {
      79           0 :         assert(cmd >= 0 && cmd < _UDEV_BUILTIN_MAX);
      80             : 
      81           0 :         if (!builtins[cmd])
      82           0 :                 return NULL;
      83             : 
      84           0 :         return builtins[cmd]->name;
      85             : }
      86             : 
      87           0 : bool udev_builtin_run_once(UdevBuiltinCommand cmd) {
      88           0 :         assert(cmd >= 0 && cmd < _UDEV_BUILTIN_MAX);
      89             : 
      90           0 :         if (!builtins[cmd])
      91           0 :                 return false;
      92             : 
      93           0 :         return builtins[cmd]->run_once;
      94             : }
      95             : 
      96           0 : UdevBuiltinCommand udev_builtin_lookup(const char *command) {
      97             :         UdevBuiltinCommand i;
      98             :         size_t n;
      99             : 
     100           0 :         assert(command);
     101             : 
     102           0 :         command += strspn(command, WHITESPACE);
     103           0 :         n = strcspn(command, WHITESPACE);
     104           0 :         for (i = 0; i < _UDEV_BUILTIN_MAX; i++)
     105           0 :                 if (builtins[i] && strneq(builtins[i]->name, command, n))
     106           0 :                         return i;
     107             : 
     108           0 :         return _UDEV_BUILTIN_INVALID;
     109             : }
     110             : 
     111           0 : int udev_builtin_run(sd_device *dev, UdevBuiltinCommand cmd, const char *command, bool test) {
     112           0 :         _cleanup_strv_free_ char **argv = NULL;
     113             : 
     114           0 :         assert(dev);
     115           0 :         assert(cmd >= 0 && cmd < _UDEV_BUILTIN_MAX);
     116           0 :         assert(command);
     117             : 
     118           0 :         if (!builtins[cmd])
     119           0 :                 return -EOPNOTSUPP;
     120             : 
     121           0 :         argv = strv_split_full(command, NULL, SPLIT_QUOTES | SPLIT_RELAX);
     122           0 :         if (!argv)
     123           0 :                 return -ENOMEM;
     124             : 
     125             :         /* we need '0' here to reset the internal state */
     126           0 :         optind = 0;
     127           0 :         return builtins[cmd]->cmd(dev, strv_length(argv), argv, test);
     128             : }
     129             : 
     130           0 : int udev_builtin_add_property(sd_device *dev, bool test, const char *key, const char *val) {
     131             :         int r;
     132             : 
     133           0 :         assert(dev);
     134           0 :         assert(key);
     135             : 
     136           0 :         r = device_add_property(dev, key, val);
     137           0 :         if (r < 0)
     138           0 :                 return log_device_debug_errno(dev, r, "Failed to add property '%s%s%s'",
     139             :                                               key, val ? "=" : "", strempty(val));
     140             : 
     141           0 :         if (test)
     142           0 :                 printf("%s=%s\n", key, strempty(val));
     143             : 
     144           0 :         return 0;
     145             : }