chiark / gitweb /
usb_id: use libudev
authorKay Sievers <kay.sievers@vrfy.org>
Thu, 2 Oct 2008 19:20:18 +0000 (21:20 +0200)
committerKay Sievers <kay.sievers@vrfy.org>
Thu, 2 Oct 2008 19:20:18 +0000 (21:20 +0200)
TODO
extras/usb_id/Makefile.am
extras/usb_id/usb_id.c

diff --git a/TODO b/TODO
index ce424c4..ac996f4 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,4 +1,3 @@
-  convert usb_id to libudev's udev_device
   add DEVTYPE
 
   o handle spaces in SYMLINK+=, do not create multiple links
index 24f630b..c54d83e 100644 (file)
@@ -8,9 +8,10 @@ usb_id_SOURCES = \
        usb_id.c \
        ../../udev/lib/libudev.h \
        ../../udev/lib/libudev.c \
+       ../../udev/lib/libudev-list.c \
        ../../udev/lib/libudev-util.c \
-       ../../udev/udev_sysfs.c \
-       ../../udev/udev_utils.c
+       ../../udev/lib/libudev-device.c \
+       ../../udev/lib/libudev-enumerate.c
 
 distclean-local:
        rm -f Makefile.in
index f39496b..4d52655 100644 (file)
 
 #include "../../udev/udev.h"
 
-#define MAX_PATH_LEN                   512
-#define MAX_SERIAL_LEN                 256
-#define BLKGETSIZE64 _IOR(0x12,114,size_t)
+int debug;
 
 static void log_fn(struct udev *udev, int priority,
                   const char *file, int line, const char *fn,
                   const char *format, va_list args)
 {
-       vsyslog(priority, format, args);
+       if (debug) {
+               fprintf(stderr, "%s: ", fn != NULL ? fn : file);
+               vfprintf(stderr, format, args);
+       } else {
+               vsyslog(priority, format, args);
+       }
 }
 
 static char vendor_str[64];
 static char model_str[64];
-static char serial_str[MAX_SERIAL_LEN];
+static char serial_str[UTIL_NAME_SIZE];
 static char revision_str[64];
 static char type_str[64];
 static char instance_str[64];
@@ -199,95 +202,98 @@ static void set_scsi_type(char *to, const char *from, size_t len)
  * 6.) If the device supplies a serial number, this number
  *     is concatenated with the identification with an underscore '_'.
  */
-static int usb_id(struct udev *udev, const char *devpath)
+static int usb_id(struct udev_device *dev)
 {
-       struct sysfs_device *dev;
-       struct sysfs_device *dev_interface;
-       struct sysfs_device *dev_usb;
+       struct udev *udev = udev_device_get_udev(dev);
+       struct udev_device *dev_interface;
+       struct udev_device *dev_usb;
        const char *if_class, *if_subclass;
        int if_class_num;
        int protocol = 0;
 
-       dbg(udev, "devpath %s\n", devpath);
-
-       /* get all usb specific information: dev_interface, if_class, dev_usb */
-       dev = sysfs_device_get(udev, devpath);
-       if (dev == NULL) {
-               err(udev, "unable to access '%s'\n", devpath);
-               return 1;
-       }
+       dbg(udev, "syspath %s\n", udev_device_get_syspath(dev));
 
        /* usb interface directory */
-       dev_interface = sysfs_device_get_parent_with_subsystem(udev, dev, "usb");
+       dev_interface = udev_device_get_parent_with_subsystem(dev, "usb");
        if (dev_interface == NULL) {
-               info(udev, "unable to access usb_interface device of '%s'\n", devpath);
+               info(udev, "unable to access usb_interface device of '%s'\n",
+                    udev_device_get_syspath(dev));
                return 1;
        }
 
-       if_class = sysfs_attr_get_value(udev, dev_interface->devpath, "bInterfaceClass");
+       if_class = udev_device_get_attr_value(dev_interface, "bInterfaceClass");
        if (!if_class) {
-               info(udev, "%s: cannot get bInterfaceClass attribute\n", dev_interface->kernel);
+               info(udev, "%s: cannot get bInterfaceClass attribute\n",
+                    udev_device_get_sysname(dev));
                return 1;
        }
        if_class_num = strtoul(if_class, NULL, 16);
        if (if_class_num == 8) {
-               if_subclass = sysfs_attr_get_value(udev, dev_interface->devpath, "bInterfaceSubClass");
+               if_subclass = udev_device_get_attr_value(dev_interface, "bInterfaceSubClass");
                if (if_subclass != NULL)
                        protocol = set_usb_mass_storage_ifsubtype(type_str, if_subclass, sizeof(type_str)-1);
-       } else
+       } else {
                set_usb_iftype(type_str, if_class_num, sizeof(type_str)-1);
+       }
 
-       info(udev, "%s: if_class %d protocol %d\n", dev_interface->devpath, if_class_num, protocol);
+       info(udev, "%s: if_class %d protocol %d\n",
+            udev_device_get_syspath(dev_interface), if_class_num, protocol);
 
        /* usb device directory */
-       dev_usb = sysfs_device_get_parent_with_subsystem(udev, dev_interface, "usb");
+       dev_usb = udev_device_get_parent_with_subsystem(dev_interface, "usb");
        if (!dev_usb) {
-               info(udev, "unable to find parent 'usb' device of '%s'\n", devpath);
+               info(udev, "unable to find parent 'usb' device of '%s'\n",
+                    udev_device_get_syspath(dev));
                return 1;
        }
 
        /* mass storage */
        if (protocol == 6 && !use_usb_info) {
-               struct sysfs_device *dev_scsi;
+               struct udev_device *dev_scsi;
                const char *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
                int host, bus, target, lun;
 
                /* get scsi device */
-               dev_scsi = sysfs_device_get_parent_with_subsystem(udev, dev, "scsi");
+               dev_scsi = udev_device_get_parent_with_subsystem(dev, "scsi");
                if (dev_scsi == NULL) {
-                       info(udev, "unable to find parent 'scsi' device of '%s'\n", devpath);
+                       info(udev, "unable to find parent 'scsi' device of '%s'\n",
+                            udev_device_get_syspath(dev));
                        goto fallback;
                }
-               if (sscanf(dev_scsi->kernel, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
-                       info(udev, "invalid scsi device '%s'\n", dev_scsi->kernel);
+               if (sscanf(udev_device_get_sysname(dev_scsi), "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
+                       info(udev, "invalid scsi device '%s'\n", udev_device_get_sysname(dev_scsi));
                        goto fallback;
                }
 
                /* Generic SPC-2 device */
-               scsi_vendor = sysfs_attr_get_value(udev, dev_scsi->devpath, "vendor");
+               scsi_vendor = udev_device_get_attr_value(dev_scsi, "vendor");
                if (!scsi_vendor) {
-                       info(udev, "%s: cannot get SCSI vendor attribute\n", dev_scsi->kernel);
+                       info(udev, "%s: cannot get SCSI vendor attribute\n",
+                            udev_device_get_sysname(dev_scsi));
                        goto fallback;
                }
                set_str(vendor_str, scsi_vendor, sizeof(vendor_str)-1);
 
-               scsi_model = sysfs_attr_get_value(udev, dev_scsi->devpath, "model");
+               scsi_model = udev_device_get_attr_value(dev_scsi, "model");
                if (!scsi_model) {
-                       info(udev, "%s: cannot get SCSI model attribute\n", dev_scsi->kernel);
+                       info(udev, "%s: cannot get SCSI model attribute\n",
+                            udev_device_get_sysname(dev_scsi));
                        goto fallback;
                }
                set_str(model_str, scsi_model, sizeof(model_str)-1);
 
-               scsi_type = sysfs_attr_get_value(udev, dev_scsi->devpath, "type");
+               scsi_type = udev_device_get_attr_value(dev_scsi, "type");
                if (!scsi_type) {
-                       info(udev, "%s: cannot get SCSI type attribute\n", dev_scsi->kernel);
+                       info(udev, "%s: cannot get SCSI type attribute\n",
+                            udev_device_get_sysname(dev_scsi));
                        goto fallback;
                }
                set_scsi_type(type_str, scsi_type, sizeof(type_str)-1);
 
-               scsi_rev = sysfs_attr_get_value(udev, dev_scsi->devpath, "rev");
+               scsi_rev = udev_device_get_attr_value(dev_scsi, "rev");
                if (!scsi_rev) {
-                       info(udev, "%s: cannot get SCSI revision attribute\n", dev_scsi->kernel);
+                       info(udev, "%s: cannot get SCSI revision attribute\n",
+                            udev_device_get_sysname(dev_scsi));
                        goto fallback;
                }
                set_str(revision_str, scsi_rev, sizeof(revision_str)-1);
@@ -305,10 +311,10 @@ fallback:
                const char *usb_vendor = NULL;
 
                if (!use_num_info)
-                       usb_vendor = sysfs_attr_get_value(udev, dev_usb->devpath, "manufacturer");
+                       usb_vendor = udev_device_get_attr_value(dev_usb, "manufacturer");
 
                if (!usb_vendor)
-                       usb_vendor = sysfs_attr_get_value(udev, dev_usb->devpath, "idVendor");
+                       usb_vendor = udev_device_get_attr_value(dev_usb, "idVendor");
 
                if (!usb_vendor) {
                        info(udev, "No USB vendor information available\n");
@@ -321,10 +327,10 @@ fallback:
                const char *usb_model = NULL;
 
                if (!use_num_info)
-                       usb_model = sysfs_attr_get_value(udev, dev_usb->devpath, "product");
+                       usb_model = udev_device_get_attr_value(dev_usb, "product");
 
                if (!usb_model)
-                       usb_model = sysfs_attr_get_value(udev, dev_usb->devpath, "idProduct");
+                       usb_model = udev_device_get_attr_value(dev_usb, "idProduct");
 
                if (!usb_model) {
                        dbg(udev, "No USB model information available\n");
@@ -336,7 +342,7 @@ fallback:
        if (revision_str[0] == '\0') {
                const char *usb_rev;
 
-               usb_rev = sysfs_attr_get_value(udev, dev_usb->devpath, "bcdDevice");
+               usb_rev = udev_device_get_attr_value(dev_usb, "bcdDevice");
                if (usb_rev)
                        set_str(revision_str, usb_rev, sizeof(revision_str)-1);
        }
@@ -344,7 +350,7 @@ fallback:
        if (serial_str[0] == '\0') {
                const char *usb_serial;
 
-               usb_serial = sysfs_attr_get_value(udev, dev_usb->devpath, "serial");
+               usb_serial = udev_device_get_attr_value(dev_usb, "serial");
                if (usb_serial)
                        set_str(serial_str, usb_serial, sizeof(serial_str)-1);
        }
@@ -353,18 +359,20 @@ fallback:
 
 int main(int argc, char **argv)
 {
-       struct udev *udev;
-       int retval = 0;
-       const char *env;
-       char devpath[MAX_PATH_LEN];
-       static int export;
        static const struct option options[] = {
                { "usb-info", no_argument, NULL, 'u' },
                { "num-info", no_argument, NULL, 'n' },
                { "export", no_argument, NULL, 'x' },
+               { "debug", no_argument, NULL, 'd' },
                { "help", no_argument, NULL, 'h' },
                {}
        };
+       struct udev *udev;
+       struct udev_device *dev;
+       char syspath[UTIL_PATH_SIZE];
+       const char *devpath;
+       static int export;
+       int retval = 0;
 
        udev = udev_new();
        if (udev == NULL)
@@ -372,16 +380,20 @@ int main(int argc, char **argv)
 
        logging_init("usb_id");
        udev_set_log_fn(udev, log_fn);
-       sysfs_init();
 
        while (1) {
                int option;
 
-               option = getopt_long(argc, argv, "nuxh", options, NULL);
+               option = getopt_long(argc, argv, "dnuxh", options, NULL);
                if (option == -1)
                        break;
 
                switch (option) {
+               case 'd':
+                       debug = 1;
+                       if (udev_get_log_priority(udev) < LOG_INFO)
+                               udev_set_log_priority(udev, LOG_INFO);
+                       break;
                case 'n':
                        use_num_info = 1;
                        use_usb_info = 1;
@@ -404,20 +416,24 @@ int main(int argc, char **argv)
                }
        }
 
-       env = getenv("DEVPATH");
-       if (env != NULL)
-               util_strlcpy(devpath, env, sizeof(devpath));
-       else {
-               if (argv[optind] == NULL) {
-                       fprintf(stderr, "No device specified\n");
-                       retval = 1;
-                       goto exit;
-               }
-               util_strlcpy(devpath, argv[optind], sizeof(devpath));
+       devpath = getenv("DEVPATH");
+       if (devpath == NULL)
+               devpath = argv[optind];
+       if (devpath == NULL) {
+               fprintf(stderr, "No device specified\n");
+               retval = 1;
+               goto exit;
        }
 
-       retval = usb_id(udev, devpath);
+       util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath));
+       util_strlcat(syspath, devpath, sizeof(syspath));
+       dev = udev_device_new_from_syspath(udev, syspath);
+       if (dev == NULL) {
+               err(udev, "unable to access '%s'\n", devpath);
+               return 1;
+       }
 
+       retval = usb_id(dev);
        if (retval == 0) {
                char serial[256];
 
@@ -449,8 +465,8 @@ int main(int argc, char **argv)
        }
 
 exit:
+       udev_device_unref(dev);
        udev_unref(udev);
-       sysfs_cleanup();
        logging_close();
        return retval;
 }