udevtrigger: trigger devices sorted by their dependency

[elogind.git] / udevinfo.c

diff --git a/udevinfo.c b/udevinfo.c
index e0ea5fb4ed921df61fe4a3eb6cc2e4408dd67cb7..2832ea0ee368677ca7325384bb7655108c7fd980 100644 (file)
--- a/udevinfo.c
+++ b/udevinfo.c
@@ -1,7 +1,5 @@
 /*
 /*

- * udevinfo.c - fetches stored device information or sysfs attributes
- *
- * Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
+ * 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
  *
  *     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


@@ -14,7 +12,7 @@
  * 
  *     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.,
  * 
  *     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.

  *
  */
 
  *
  */
 


@@ -27,6 +25,9 @@
 #include <unistd.h>
 #include <dirent.h>
 #include <errno.h>
 #include <unistd.h>
 #include <dirent.h>
 #include <errno.h>

+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/types.h>

 
 #include "udev.h"
 
 
 #include "udev.h"
 


@@ -45,7 +46,7 @@ void log_message (int priority, const char *format, ...)
 }
 #endif
 
 }
 #endif
 

-static void print_all_attributes(const char *devpath)
+static void print_all_attributes(const char *devpath, const char *key)

 {
        char path[PATH_SIZE];
        DIR *dir;
 {
        char path[PATH_SIZE];
        DIR *dir;


@@ -57,10 +58,23 @@ static void print_all_attributes(const char *devpath)
        dir = opendir(path);
        if (dir != NULL) {
                for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
        dir = opendir(path);
        if (dir != NULL) {
                for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {

+                       struct stat statbuf;
+                       char filename[PATH_SIZE];

                        char *attr_value;
                        char value[NAME_SIZE];
                        size_t len;
 
                        char *attr_value;
                        char value[NAME_SIZE];
                        size_t len;
 

+                       if (dent->d_name[0] == '.')
+                               continue;
+
+                       strlcpy(filename, path, sizeof(filename));
+                       strlcat(filename, "/", sizeof(filename));
+                       strlcat(filename, dent->d_name, sizeof(filename));
+                       if (lstat(filename, &statbuf) != 0)
+                               continue;
+                       if (S_ISLNK(statbuf.st_mode))
+                               continue;
+

                        attr_value = sysfs_attr_get_value(devpath, dent->d_name);
                        if (attr_value == NULL)
                                continue;
                        attr_value = sysfs_attr_get_value(devpath, dent->d_name);
                        if (attr_value == NULL)
                                continue;


@@ -80,7 +94,7 @@ static void print_all_attributes(const char *devpath)
                        }
 
                        replace_untrusted_chars(value);
                        }
 
                        replace_untrusted_chars(value);

-                       printf("    SYSFS{%s}==\"%s\"\n", dent->d_name, value);
+                       printf("    %s{%s}==\"%s\"\n", key, dent->d_name, value);

                }
        }
        printf("\n");
                }
        }
        printf("\n");


@@ -90,6 +104,10 @@ static int print_device_chain(const char *devpath)
 {
        struct sysfs_device *dev;
 
 {
        struct sysfs_device *dev;
 

+       dev = sysfs_device_get(devpath);
+       if (dev == NULL)
+               return -1;
+

        printf("\n"
               "Udevinfo starts with the device specified by the devpath and then\n"
               "walks up the chain of parent devices. It prints for every device\n"
        printf("\n"
               "Udevinfo starts with the device specified by the devpath and then\n"
               "walks up the chain of parent devices. It prints for every device\n"


@@ -98,15 +116,11 @@ static int print_device_chain(const char *devpath)
               "and the attributes from one single parent device.\n"
               "\n");
 
               "and the attributes from one single parent device.\n"
               "\n");
 

-       dev = sysfs_device_get(devpath);
-       if (dev == NULL)
-               return -1;
-

        printf("  looking at device '%s':\n", dev->devpath);
        printf("  looking at device '%s':\n", dev->devpath);

-       printf("    KERNEL==\"%s\"\n", dev->kernel_name);
+       printf("    KERNEL==\"%s\"\n", dev->kernel);

        printf("    SUBSYSTEM==\"%s\"\n", dev->subsystem);
        printf("    DRIVER==\"%s\"\n", dev->driver);
        printf("    SUBSYSTEM==\"%s\"\n", dev->subsystem);
        printf("    DRIVER==\"%s\"\n", dev->driver);

-       print_all_attributes(dev->devpath);
+       print_all_attributes(dev->devpath, "ATTR");

 
        /* walk up the chain of devices */
        while (1) {
 
        /* walk up the chain of devices */
        while (1) {


@@ -114,11 +128,11 @@ static int print_device_chain(const char *devpath)
                if (dev == NULL)
                        break;
                printf("  looking at parent device '%s':\n", dev->devpath);
                if (dev == NULL)
                        break;
                printf("  looking at parent device '%s':\n", dev->devpath);

-               printf("    ID==\"%s\"\n", dev->kernel_name);
-               printf("    BUS==\"%s\"\n", dev->subsystem);
-               printf("    DRIVER==\"%s\"\n", dev->driver);
+               printf("    KERNELS==\"%s\"\n", dev->kernel);
+               printf("    SUBSYSTEMS==\"%s\"\n", dev->subsystem);
+               printf("    DRIVERS==\"%s\"\n", dev->driver);

 
 

-               print_all_attributes(dev->devpath);
+               print_all_attributes(dev->devpath, "ATTRS");

        }
 
        return 0;
        }
 
        return 0;


@@ -163,34 +177,24 @@ static void export_db(void fnct(struct udevice *udev)) {
        name_list_cleanup(&name_list);
 }
 
        name_list_cleanup(&name_list);
 }
 

-static void print_help(void)
-{
-       fprintf(stderr, "Usage: udevinfo [-anpqrVh]\n"
-              "  -q TYPE  query database for the specified value:\n"
-              "             'name'    name of device node\n"
-              "             'symlink' pointing to node\n"
-              "             'path'    sysfs device path\n"
-              "             'env'     the device related imported environment\n"
-              "             'all'     all values\n"
-              "\n"
-              "  -p PATH  sysfs device path used for query or chain\n"
-              "  -n NAME  node/symlink name used for query\n"
-              "\n"
-              "  -r       prepend to query result or print udev_root\n"
-              "  -a       print all SYSFS_attributes along the device chain\n"
-              "  -e       export the content of the udev database\n"
-              "  -V       print udev version\n"
-              "  -h       print this help text\n"
-              "\n");
-}
-

 int main(int argc, char *argv[], char *envp[])
 {
 int main(int argc, char *argv[], char *envp[])
 {

-       static const char short_options[] = "aden:p:q:rVh";

        int option;
        struct udevice *udev;
        int root = 0;
 
        int option;
        struct udevice *udev;
        int root = 0;
 

+       static const struct option options[] = {
+               { "name", 1, NULL, 'n' },
+               { "path", 1, NULL, 'p' },
+               { "query", 1, NULL, 'q' },
+               { "attribute-walk", 0, NULL, 'a' },
+               { "export-db", 0, NULL, 'e' },
+               { "root", 0, NULL, 'r' },
+               { "version", 0, NULL, 'V' },
+               { "help", 0, NULL, 'h' },
+               {}
+       };
+

        enum action_type {
                ACTION_NONE,
                ACTION_QUERY,
        enum action_type {
                ACTION_NONE,
                ACTION_QUERY,


@@ -209,13 +213,10 @@ int main(int argc, char *argv[], char *envp[])
 
        char path[PATH_SIZE] = "";
        char name[PATH_SIZE] = "";
 
        char path[PATH_SIZE] = "";
        char name[PATH_SIZE] = "";

-       char temp[PATH_SIZE];

        struct name_entry *name_loop;
        struct name_entry *name_loop;

-       char *pos;

        int rc = 0;
 
        logging_init("udevinfo");
        int rc = 0;
 
        logging_init("udevinfo");

-

        udev_config_init();
        sysfs_init();
 
        udev_config_init();
        sysfs_init();
 


@@ -227,23 +228,27 @@ int main(int argc, char *argv[], char *envp[])
 
        /* get command line options */
        while (1) {
 
        /* get command line options */
        while (1) {

-               option = getopt(argc, argv, short_options);
+               option = getopt_long(argc, argv, "aden:p:q:rVh", options, NULL);

                if (option == -1)
                        break;
 
                dbg("option '%c'", option);
                switch (option) {
                case 'n':
                if (option == -1)
                        break;
 
                dbg("option '%c'", option);
                switch (option) {
                case 'n':

-                       dbg("udev name: %s\n", optarg);
-                       strlcpy(name, optarg, sizeof(name));
+                       /* remove /dev if given */
+                       if (strncmp(optarg, udev_root, strlen(udev_root)) == 0)
+                               strlcpy(name, &optarg[strlen(udev_root)+1], sizeof(name));
+                       else
+                               strlcpy(name, optarg, sizeof(name));
+                       dbg("name: %s\n", name);

                        break;
                case 'p':
                        break;
                case 'p':

-                       dbg("udev path: %s\n", optarg);
-                       /* remove sysfs mountpoint if not given */
+                       /* remove /sys if given */

                        if (strncmp(optarg, sysfs_path, strlen(sysfs_path)) == 0)
                                strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path));
                        else
                                strlcpy(path, optarg, sizeof(path));
                        if (strncmp(optarg, sysfs_path, strlen(sysfs_path)) == 0)
                                strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path));
                        else
                                strlcpy(path, optarg, sizeof(path));

+                       dbg("path: %s\n", path);

                        break;
                case 'q':
                        dbg("udev query: %s\n", optarg);
                        break;
                case 'q':
                        dbg("udev query: %s\n", optarg);


@@ -289,9 +294,25 @@ int main(int argc, char *argv[], char *envp[])
                        printf("udevinfo, version %s\n", UDEV_VERSION);
                        goto exit;
                case 'h':
                        printf("udevinfo, version %s\n", UDEV_VERSION);
                        goto exit;
                case 'h':

-               case '?':
+                       printf("Usage: udevinfo OPTIONS\n"
+                              "  --query=<type>    query database for the specified value:\n"
+                              "    name            name of device node\n"
+                              "    symlink         pointing to node\n"
+                              "    path            sysfs device path\n"
+                              "    env             the device related imported environment\n"
+                              "    all             all values\n"
+                              "\n"
+                              "  --path=<devpath>  sysfs device path used for query or chain\n"
+                              "  --name=<name>     node or symlink name used for query\n"
+                              "\n"
+                              "  --root            prepend to query result or print udev_root\n"
+                              "  --attribute-walk  print all SYSFS_attributes along the device chain\n"
+                              "  --export-db       export the content of the udev database\n"
+                              "  --verision        print udev version\n"
+                              "  --help            print this text\n"
+                              "\n");
+                       goto exit;

                default:
                default:

-                       print_help();

                        goto exit;
                }
        }
                        goto exit;
                }
        }


@@ -299,45 +320,24 @@ int main(int argc, char *argv[], char *envp[])
        /* run action */
        switch (action) {
        case ACTION_QUERY:
        /* run action */
        switch (action) {
        case ACTION_QUERY:

-               /* need devpath or node/symlink name for query */
+               /* needs devpath or node/symlink name for query */

                if (path[0] != '\0') {
                if (path[0] != '\0') {

-                       /* remove sysfs_path if given */
-                       if (strncmp(path, sysfs_path, strlen(sysfs_path)) == 0) {
-                               pos = path + strlen(sysfs_path);
-                       } else {
-                               if (path[0] != '/') {
-                                       /* prepend '/' if missing */
-                                       strcpy(temp, "/");
-                                       strlcpy(temp, path, sizeof(temp));
-                                       pos = temp;
-                               } else {
-                                       pos = path;
-                               }
-                       }
-                       if (udev_db_get_device(udev, pos) != 0) {
-                               fprintf(stderr, "no record for '%s' in database\n", pos);
+                       if (udev_db_get_device(udev, path) != 0) {
+                               fprintf(stderr, "no record for '%s' in database\n", path);

                                rc = 3;
                                goto exit;
                        }
                } else if (name[0] != '\0') {
                        char devpath[PATH_SIZE];
                                rc = 3;
                                goto exit;
                        }
                } else if (name[0] != '\0') {
                        char devpath[PATH_SIZE];

-                       int len;

 
 

-                       /* remove udev_root if given */
-                       len = strlen(udev_root);
-                       if (strncmp(name, udev_root, len) == 0) {
-                               pos = &name[len+1];
-                       } else
-                               pos = name;
-
-                       if (udev_db_lookup_name(pos, devpath, sizeof(devpath)) != 0) {
-                               fprintf(stderr, "no record for '%s' in database\n", pos);
-                               rc = 3;
+                       if (udev_db_lookup_name(name, devpath, sizeof(devpath)) != 0) {
+                               fprintf(stderr, "node name not found\n");
+                               rc = 4;

                                goto exit;
                        }
                        udev_db_get_device(udev, devpath);
                } else {
                                goto exit;
                        }
                        udev_db_get_device(udev, devpath);
                } else {

-                       fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n");
+                       fprintf(stderr, "query needs --path or node --name specified\n");

                        rc = 4;
                        goto exit;
                }
                        rc = 4;
                        goto exit;
                }


@@ -371,23 +371,41 @@ int main(int argc, char *argv[], char *envp[])
                        print_record(udev);
                        break;
                default:
                        print_record(udev);
                        break;
                default:

-                       print_help();
+                       fprintf(stderr, "unknown query type\n");

                        break;
                }
                break;
        case ACTION_ATTRIBUTE_WALK:
                        break;
                }
                break;
        case ACTION_ATTRIBUTE_WALK:

-               if (path[0] == '\0') {
-                       fprintf(stderr, "attribute walk on device chain needs path(-p) specified\n");
-                       rc = 4;
+               if (path[0] != '\0') {
+                       if (print_device_chain(path) != 0) {
+                               fprintf(stderr, "device not found\n");
+                               rc = 4;
+                               goto exit;
+                       }
+               } else if (name[0] != '\0') {
+                       char devpath[PATH_SIZE];
+
+                       if (udev_db_lookup_name(name, devpath, sizeof(devpath)) != 0) {
+                               fprintf(stderr, "node name not found\n");
+                               rc = 4;
+                               goto exit;
+                       }
+                       if (print_device_chain(devpath) != 0) {
+                               fprintf(stderr, "device not found\n");
+                               rc = 4;
+                               goto exit;
+                       }
+               } else {
+                       fprintf(stderr, "attribute walk needs --path or node --name specified\n");
+                       rc = 5;

                        goto exit;
                        goto exit;

-               } else
-                       print_device_chain(path);
+               }

                break;
        case ACTION_ROOT:
                printf("%s\n", udev_root);
                break;
        default:
                break;
        case ACTION_ROOT:
                printf("%s\n", udev_root);
                break;
        default:

-               print_help();
+               fprintf(stderr, "missing option\n");

                rc = 1;
                break;
        }
                rc = 1;
                break;
        }