chiark / gitweb /
[PATCH] big libsysfs diet (pre 2.0 version)
[elogind.git] / udevinfo.c
index f1b74fc8f6c98899b08eb5ab1e4887cbd1b9c7ba..a4c17da3f09069bded7b65c3d3b97a86c6f6ce9b 100644 (file)
 #include "libsysfs/sysfs/libsysfs.h"
 #include "libsysfs/dlist.h"
 #include "udev.h"
-#include "udev_lib.h"
+#include "udev_utils.h"
 #include "udev_version.h"
+#include "udev_db.h"
 #include "logging.h"
-#include "udevdb.h"
 
 
-# define SYSFS_VALUE_MAX 200
-
-char **main_argv;
-int main_argc;
+#define SYSFS_VALUE_SIZE               256
 
 #ifdef LOG
-unsigned char logname[LOGNAME_SIZE];
 void log_message (int level, const char *format, ...)
 {
        va_list args;
@@ -53,26 +49,13 @@ void log_message (int level, const char *format, ...)
 }
 #endif
 
-static int print_all_attributes(const char *path)
+static void print_all_attributes(struct dlist *attr_list)
 {
-       struct dlist *attributes;
        struct sysfs_attribute *attr;
-       struct sysfs_directory *sysfs_dir;
-       char value[SYSFS_VALUE_MAX];
+       char value[SYSFS_VALUE_SIZE];
        int len;
-       int retval = 0;
-
-       sysfs_dir = sysfs_open_directory(path);
-       if (sysfs_dir == NULL)
-               return -1;
-
-       attributes = sysfs_get_dir_attributes(sysfs_dir);
-       if (attributes == NULL) {
-               retval = -1;
-               goto exit;
-       }
 
-       dlist_for_each_data(attributes, attr, struct sysfs_attribute) {
+       dlist_for_each_data(attr_list, attr, struct sysfs_attribute) {
                if (attr->value != NULL) {
                        strfieldcpy(value, attr->value);
                        len = strlen(value);
@@ -96,11 +79,6 @@ static int print_all_attributes(const char *path)
                }
        }
        printf("\n");
-
-exit:
-       sysfs_close_directory(sysfs_dir);
-
-       return retval;
 }
 
 static int print_record(struct udevice *udev)
@@ -127,11 +105,8 @@ static int print_device_chain(const char *path)
        struct sysfs_attribute *attr;
        struct sysfs_device *sysfs_dev;
        struct sysfs_device *sysfs_dev_parent;
+       struct dlist *attr_list;
        int retval = 0;
-       char type;
-
-       type = get_device_type(path, "");
-       dbg("device type is %c", type);
 
        /*  get the class dev */
        class_dev = sysfs_open_class_device_path(path);
@@ -147,24 +122,22 @@ static int print_device_chain(const char *path)
               "to match the device for which the node will be created.\n"
               "\n");
 
-       if (type == 'b' || type =='c') {
-               /* read the 'dev' file for major/minor*/
-               attr = sysfs_get_classdev_attr(class_dev, "dev");
-               if (attr == NULL) {
-                       printf("couldn't get the \"dev\" file\n");
-                       retval = -1;
-                       goto exit;
-               }
+       /* look for the 'dev' file */
+       attr = sysfs_get_classdev_attr(class_dev, "dev");
+       if (attr != NULL)
                printf("device '%s' has major:minor %s", class_dev->path, attr->value);
-       }
 
        /* open sysfs class device directory and print all attributes */
        printf("  looking at class device '%s':\n", class_dev->path);
-       if (print_all_attributes(class_dev->path) != 0) {
+       printf("    SUBSYSTEM=\"%s\"\n", class_dev->classname);
+
+       attr_list = sysfs_get_classdev_attributes(class_dev);
+       if (attr_list == NULL) {
                printf("couldn't open class device directory\n");
                retval = -1;
                goto exit;
        }
+       print_all_attributes(attr_list);
 
        /* get the device link (if parent exists look here) */
        class_dev_parent = sysfs_get_classdev_parent(class_dev);
@@ -178,12 +151,20 @@ static int print_device_chain(const char *path)
 
        /* look the device chain upwards */
        while (sysfs_dev != NULL) {
+               attr_list = sysfs_get_device_attributes(sysfs_dev);
+               if (attr_list == NULL) {
+                       printf("couldn't open device directory\n");
+                       retval = -1;
+                       goto exit;
+               }
+
                printf("  looking at the device chain at '%s':\n", sysfs_dev->path);
                printf("    BUS=\"%s\"\n", sysfs_dev->bus);
                printf("    ID=\"%s\"\n", sysfs_dev->bus_id);
+               printf("    DRIVER=\"%s\"\n", sysfs_dev->driver_name);
 
                /* open sysfs device directory and print all attributes */
-               print_all_attributes(sysfs_dev->path);
+               print_all_attributes(attr_list);
 
                sysfs_dev_parent = sysfs_get_device_parent(sysfs_dev);
                if (sysfs_dev_parent == NULL)
@@ -197,74 +178,16 @@ exit:
        return retval;
 }
 
-/* print all class/block devices with major/minor, physical device and bus*/
-static void print_sysfs_devices(void)
-{
-       struct dlist *subsyslist;
-       char *class;
-
-       subsyslist = sysfs_open_subsystem_list("class");
-       if (!subsyslist)
-               exit(1);
-
-       dlist_for_each_data(subsyslist, class, char) {
-               struct sysfs_class *cls;
-               struct dlist *class_devices;
-               struct sysfs_class_device *class_dev;
-               struct sysfs_device *phys_dev;
-
-               cls = sysfs_open_class(class);
-               if (!cls)
-                       continue;
-
-               class_devices = sysfs_get_class_devices(cls);
-               if (!class_devices)
-                       continue;
-
-               dlist_for_each_data(class_devices, class_dev, struct sysfs_class_device) {
-                       struct sysfs_attribute *attr;
-
-                       printf("\n");
-                       printf("DEVPATH        '%s'\n", class_dev->path);
-                       printf("SUBSYSTEM      '%s'\n", class_dev->classname);
-                       printf("NAME           '%s'\n", class_dev->name);
-
-                       attr = sysfs_get_classdev_attr(class_dev, "dev");
-                       if (attr) {
-                               char *pos = &(attr->value[strlen(attr->value)-1]);
-
-                               if  (pos[0] == '\n')
-                                       pos[0] = '\0';
-
-                               printf("MAJORMINOR     '%s'\n", attr->value);
-                       }
-
-                       phys_dev = sysfs_get_classdev_device(class_dev);
-                       if (phys_dev) {
-                               printf("PHYSDEVPATH    '%s'\n", phys_dev->path);
-                               if (phys_dev->bus[0] != '\0')
-                                       printf("PHYSDEVPATHBUS '%s'\n", phys_dev->bus);
-                               if (phys_dev->driver_name[0] != '\0')
-                                       printf("DRIVER         '%s'\n", phys_dev->driver_name);
-                       }
-               }
-
-               sysfs_close_class(cls);
-       }
-
-       sysfs_close_list(subsyslist);
-}
-
-static int process_options(void)
+static int process_options(int argc, char *argv[])
 {
-       static const char short_options[] = "adn:p:q:rsVh";
+       static const char short_options[] = "an:p:q:rVh";
        int option;
        int retval = 1;
        struct udevice udev;
        int root = 0;
        int attributes = 0;
        enum query_type query = NONE;
-       char result[NAME_SIZE] = "";
+       char result[1024] = "";
        char path[NAME_SIZE] = "";
        char name[NAME_SIZE] = "";
        char temp[NAME_SIZE];
@@ -272,7 +195,7 @@ static int process_options(void)
 
        /* get command line options */
        while (1) {
-               option = getopt(main_argc, main_argv, short_options);
+               option = getopt(argc, argv, short_options);
                if (option == -1)
                        break;
 
@@ -318,10 +241,6 @@ static int process_options(void)
                        root = 1;
                        break;
 
-               case 's':
-                       print_sysfs_devices();
-                       exit(0);
-
                case 'a':
                        attributes = 1;
                        break;
@@ -355,8 +274,7 @@ static int process_options(void)
                                }
                        }
                        memset(&udev, 0x00, sizeof(struct udevice));
-                       strfieldcpy(udev.devpath, pos);
-                       retval = udevdb_get_dev(&udev);
+                       retval = udev_db_get_device_by_devpath(&udev, pos);
                        if (retval != 0) {
                                printf("device not found in database\n");
                                goto exit;
@@ -375,7 +293,7 @@ static int process_options(void)
 
                        memset(&udev, 0x00, sizeof(struct udevice));
                        strfieldcpy(udev.name, pos);
-                       retval = udevdb_get_dev_byname(&udev, pos);
+                       retval = udev_db_get_device_byname(&udev, pos);
                        if (retval != 0) {
                                printf("device not found in database\n");
                                goto exit;
@@ -399,11 +317,24 @@ print:
                        break;
 
                case SYMLINK:
-                       strfieldcpy(result, udev.symlink);
+                       if (root) {
+                               int slen;
+                               char *spos;
+                               char slink[NAME_SIZE];
+
+                               pos = result;
+                               foreach_strpart(udev.symlink, " \n\r", spos, slen) {
+                                       strncpy(slink, spos, slen);
+                                       slink[slen] = '\0';
+                                       pos += sprintf(pos, "%s/%s ", udev_root, slink);
+                               }
+                       } else {
+                               strfieldcpy(result, udev.symlink);
+                       }
                        break;
 
                case PATH:
-                       strfieldcpy(result, path);
+                       strfieldcpy(result, udev.devpath);
                        break;
 
                case ALL:
@@ -441,7 +372,7 @@ exit:
        }
 
 help:
-       printf("Usage: [-anpqrdVh]\n"
+       printf("Usage: udevinfo [-anpqrVh]\n"
               "  -q TYPE  query database for the specified value:\n"
               "             'name'    name of device node\n"
               "             'symlink' pointing to node\n"
@@ -464,15 +395,12 @@ int main(int argc, char *argv[], char *envp[])
 {
        int rc = 0;
 
-       main_argv = argv;
-       main_argc = argc;
-
        logging_init("udevinfo");
 
        /* initialize our configuration */
        udev_init_config();
 
-       rc = process_options();
+       rc = process_options(argc, argv);
 
        logging_close();
        exit(rc);