chiark / gitweb /
volume_id: clean up linux_raid code
[elogind.git] / udevtest.c
index 4890b68..d5e90b0 100644 (file)
@@ -1,7 +1,6 @@
 /*
- * udevtest.c
- *
  * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2004-2006 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
  * 
  *     You should have received a copy of the GNU General Public License along
  *     with this program; if not, write to the Free Software Foundation, Inc.,
- *     675 Mass Ave, Cambridge, MA 02139, USA.
+ *     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
  */
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
 #include <errno.h>
 #include <ctype.h>
+#include <fcntl.h>
 #include <signal.h>
 #include <syslog.h>
+#include <getopt.h>
 
-#include "libsysfs/sysfs/libsysfs.h"
 #include "udev.h"
-#include "udev_sysfs.h"
-#include "udev_utils.h"
-#include "udev_version.h"
 #include "udev_rules.h"
-#include "logging.h"
-
 
-#ifdef USE_LOG
-void log_message (int priority, const char *format, ...)
+static int import_uevent_var(const char *devpath)
 {
-       va_list args;
-
-       if (priority > udev_log_priority)
-               return;
-
-       va_start(args, format);
-       vprintf(format, args);
-       va_end(args);
-       if (format[strlen(format)-1] != '\n')
-               printf("\n");
+       char path[PATH_SIZE];
+       static char value[4096]; /* must stay, used with putenv */
+       ssize_t size;
+       int fd;
+       char *key;
+       char *next;
+       int rc = -1;
+
+       /* read uevent file */
+       strlcpy(path, sysfs_path, sizeof(path));
+       strlcat(path, devpath, sizeof(path));
+       strlcat(path, "/uevent", sizeof(path));
+       fd = open(path, O_RDONLY);
+       if (fd < 0)
+               goto out;
+       size = read(fd, value, sizeof(value));
+       close(fd);
+       if (size < 0)
+               goto out;
+       value[size] = '\0';
+
+       /* import keys into environment */
+       key = value;
+       while (key[0] != '\0') {
+               next = strchr(key, '\n');
+               if (next == NULL)
+                       goto out;
+               next[0] = '\0';
+               info("import into environment: '%s'\n", key);
+               putenv(key);
+               key = &next[1];
+       }
+       rc = 0;
+out:
+       return rc;
 }
-#endif
 
-int main(int argc, char *argv[], char *envp[])
+int udevtest(int argc, char *argv[], char *envp[])
 {
-       struct udev_rules rules;
-       struct sysfs_class_device *class_dev;
-       char *devpath;
-       char path[PATH_SIZE];
-       char temp[PATH_SIZE];
-       struct udevice udev;
-       char *subsystem = NULL;
-
-       info("version %s", UDEV_VERSION);
+       int force = 0;
+       const char *action = "add";
+       const char *subsystem = NULL;
+       const char *devpath = NULL;
+       struct udevice *udev;
+       struct sysfs_device *dev;
+       struct udev_rules rules = {};
+       int retval;
+       int rc = 0;
+
+       static const struct option options[] = {
+               { "action", 1, NULL, 'a' },
+               { "subsystem", 1, NULL, 's' },
+               { "force", 0, NULL, 'f' },
+               { "help", 0, NULL, 'h' },
+               {}
+       };
+
+       info("version %s\n", UDEV_VERSION);
+       udev_config_init();
+       if (udev_log_priority < LOG_INFO) {
+               char priority[32];
 
-       /* initialize our configuration */
-       udev_init_config();
-       if (udev_log_priority < LOG_INFO)
                udev_log_priority = LOG_INFO;
+               sprintf(priority, "%i", udev_log_priority);
+               setenv("UDEV_LOG", priority, 1);
+       }
 
-       if (argc != 3) {
-               info("Usage: udevtest <devpath> <subsystem>");
-               return 1;
+       while (1) {
+               int option;
+
+               option = getopt_long(argc, argv, "a:s:fh", options, NULL);
+               if (option == -1)
+                       break;
+
+               dbg("option '%c'\n", option);
+               switch (option) {
+               case 'a':
+                       action = optarg;
+                       break;
+               case 's':
+                       subsystem = optarg;
+                       break;
+               case 'f':
+                       force = 1;
+                       break;
+               case 'h':
+                       printf("Usage: udevadm test OPTIONS <devpath>\n"
+                              "  --action=<string>     set action string\n"
+                              "  --subsystem=<string>  set subsystem string\n"
+                              "  --force               don't skip node/link creation\n"
+                              "  --help                print this help text\n\n");
+                       exit(0);
+               default:
+                       exit(1);
+               }
        }
+       devpath = argv[optind];
+
+       if (devpath == NULL) {
+               fprintf(stderr, "devpath parameter missing\n");
+               rc = 1;
+               goto exit;
+       }
+
+       printf("This program is for debugging only, it does not run any program,\n"
+              "specified by a RUN key. It may show incorrect results, because\n"
+              "some values may be different, or not available at a simulation run.\n"
+              "\n");
 
-       /* remove sysfs_path if given */
-       if (strncmp(argv[1], sysfs_path, strlen(sysfs_path)) == 0)
-               devpath = &argv[1][strlen(sysfs_path)] ;
-       else
-               if (argv[1][0] != '/') {
-                       /* prepend '/' if missing */
-                       snprintf(temp, sizeof(temp), "/%s", argv[1]);
-                       temp[sizeof(temp)-1] = '\0';
-                       devpath = temp;
-               } else
-                       devpath = argv[1];
-
-       subsystem = argv[2];
-       setenv("DEVPATH", devpath, 1);
-       setenv("SUBSYSTEM", subsystem, 1);
-       setenv("ACTION", "add", 1);
-       info("looking at device '%s' from subsystem '%s'", devpath, subsystem);
-
-       /* initialize the naming deamon */
+       sysfs_init();
        udev_rules_init(&rules, 0);
 
-       /* fill in values and test_run flag*/
-       udev_init_device(&udev, devpath, subsystem, "add");
+       /* remove /sys if given */
+       if (strncmp(devpath, sysfs_path, strlen(sysfs_path)) == 0)
+               devpath = &devpath[strlen(sysfs_path)];
 
-       /* open the device */
-       snprintf(path, sizeof(path), "%s%s", sysfs_path, udev.devpath);
-       path[sizeof(path)-1] = '\0';
-       class_dev = sysfs_open_class_device_path(path);
-       if (class_dev == NULL) {
-               info("sysfs_open_class_device_path failed");
-               return 1;
+       dev = sysfs_device_get(devpath);
+       if (dev == NULL) {
+               fprintf(stderr, "unable to open device '%s'\n", devpath);
+               rc = 2;
+               goto exit;
        }
-       info("opened class_dev->name='%s'", class_dev->name);
 
-       if (udev.type == DEV_BLOCK || udev.type == DEV_CLASS)
-               udev.devt = get_devt(class_dev);
+       udev = udev_device_init(NULL);
+       if (udev == NULL) {
+               fprintf(stderr, "error initializing device\n");
+               rc = 3;
+               goto exit;
+       }
+
+       if (subsystem != NULL)
+               strlcpy(dev->subsystem, subsystem, sizeof(dev->subsystem));
+
+       /* override built-in sysfs device */
+       udev->dev = dev;
+       strlcpy(udev->action, action, sizeof(udev->action));
+       udev->devt = udev_device_get_devt(udev);
 
        /* simulate node creation with test flag */
-       udev.test_run = 1;
-       if (udev.type == DEV_NET || udev.devt) {
-               udev_rules_get_name(&rules, &udev, class_dev);
-               udev_add_device(&udev, class_dev);
-       } else
-               info("only char and block devices with a dev-file are supported by this test program");
-       sysfs_close_class_device(class_dev);
-
-       return 0;
+       if (!force)
+               udev->test_run = 1;
+
+       setenv("DEVPATH", udev->dev->devpath, 1);
+       setenv("SUBSYSTEM", udev->dev->subsystem, 1);
+       setenv("ACTION", udev->action, 1);
+       import_uevent_var(udev->dev->devpath);
+
+       info("looking at device '%s' from subsystem '%s'\n", udev->dev->devpath, udev->dev->subsystem);
+       retval = udev_device_event(&rules, udev);
+
+       if (udev->event_timeout >= 0)
+               info("custom event timeout: %i\n", udev->event_timeout);
+
+       if (retval == 0 && !udev->ignore_device && udev_run) {
+               struct name_entry *name_loop;
+
+               list_for_each_entry(name_loop, &udev->run_list, node) {
+                       char program[PATH_SIZE];
+
+                       strlcpy(program, name_loop->name, sizeof(program));
+                       udev_rules_apply_format(udev, program, sizeof(program));
+                       info("run: '%s'\n", program);
+               }
+       }
+       udev_device_cleanup(udev);
+
+exit:
+       udev_rules_cleanup(&rules);
+       sysfs_cleanup();
+       return rc;
 }