mirror of
https://github.com/systemd/systemd-stable.git
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usb_id: use libudev
This commit is contained in:
Kay Sievers
parent
98f10a9e2a
commit
2f1a291e2f
1
TODO
1
TODO
@ -1,4 +1,3 @@
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convert usb_id to libudev's udev_device
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add DEVTYPE
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o handle spaces in SYMLINK+=, do not create multiple links
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@ -8,9 +8,10 @@ usb_id_SOURCES = \
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usb_id.c \
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../../udev/lib/libudev.h \
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../../udev/lib/libudev.c \
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../../udev/lib/libudev-list.c \
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../../udev/lib/libudev-util.c \
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../../udev/udev_sysfs.c \
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../../udev/udev_utils.c
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../../udev/lib/libudev-device.c \
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../../udev/lib/libudev-enumerate.c
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distclean-local:
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rm -f Makefile.in
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@ -22,20 +22,23 @@
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#include "../../udev/udev.h"
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#define MAX_PATH_LEN 512
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#define MAX_SERIAL_LEN 256
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#define BLKGETSIZE64 _IOR(0x12,114,size_t)
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int debug;
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static void log_fn(struct udev *udev, int priority,
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const char *file, int line, const char *fn,
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const char *format, va_list args)
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{
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vsyslog(priority, format, args);
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if (debug) {
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fprintf(stderr, "%s: ", fn != NULL ? fn : file);
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vfprintf(stderr, format, args);
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} else {
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vsyslog(priority, format, args);
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}
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}
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static char vendor_str[64];
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static char model_str[64];
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static char serial_str[MAX_SERIAL_LEN];
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static char serial_str[UTIL_NAME_SIZE];
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static char revision_str[64];
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static char type_str[64];
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static char instance_str[64];
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@ -199,95 +202,98 @@ static void set_scsi_type(char *to, const char *from, size_t len)
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* 6.) If the device supplies a serial number, this number
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* is concatenated with the identification with an underscore '_'.
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*/
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static int usb_id(struct udev *udev, const char *devpath)
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static int usb_id(struct udev_device *dev)
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{
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struct sysfs_device *dev;
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struct sysfs_device *dev_interface;
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struct sysfs_device *dev_usb;
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struct udev *udev = udev_device_get_udev(dev);
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struct udev_device *dev_interface;
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struct udev_device *dev_usb;
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const char *if_class, *if_subclass;
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int if_class_num;
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int protocol = 0;
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dbg(udev, "devpath %s\n", devpath);
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/* get all usb specific information: dev_interface, if_class, dev_usb */
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dev = sysfs_device_get(udev, devpath);
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if (dev == NULL) {
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err(udev, "unable to access '%s'\n", devpath);
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return 1;
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}
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dbg(udev, "syspath %s\n", udev_device_get_syspath(dev));
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/* usb interface directory */
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dev_interface = sysfs_device_get_parent_with_subsystem(udev, dev, "usb");
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dev_interface = udev_device_get_parent_with_subsystem(dev, "usb");
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if (dev_interface == NULL) {
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info(udev, "unable to access usb_interface device of '%s'\n", devpath);
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info(udev, "unable to access usb_interface device of '%s'\n",
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udev_device_get_syspath(dev));
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return 1;
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}
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if_class = sysfs_attr_get_value(udev, dev_interface->devpath, "bInterfaceClass");
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if_class = udev_device_get_attr_value(dev_interface, "bInterfaceClass");
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if (!if_class) {
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info(udev, "%s: cannot get bInterfaceClass attribute\n", dev_interface->kernel);
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info(udev, "%s: cannot get bInterfaceClass attribute\n",
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udev_device_get_sysname(dev));
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return 1;
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}
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if_class_num = strtoul(if_class, NULL, 16);
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if (if_class_num == 8) {
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if_subclass = sysfs_attr_get_value(udev, dev_interface->devpath, "bInterfaceSubClass");
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if_subclass = udev_device_get_attr_value(dev_interface, "bInterfaceSubClass");
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if (if_subclass != NULL)
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protocol = set_usb_mass_storage_ifsubtype(type_str, if_subclass, sizeof(type_str)-1);
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} else
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} else {
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set_usb_iftype(type_str, if_class_num, sizeof(type_str)-1);
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}
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info(udev, "%s: if_class %d protocol %d\n", dev_interface->devpath, if_class_num, protocol);
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info(udev, "%s: if_class %d protocol %d\n",
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udev_device_get_syspath(dev_interface), if_class_num, protocol);
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/* usb device directory */
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dev_usb = sysfs_device_get_parent_with_subsystem(udev, dev_interface, "usb");
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dev_usb = udev_device_get_parent_with_subsystem(dev_interface, "usb");
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if (!dev_usb) {
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info(udev, "unable to find parent 'usb' device of '%s'\n", devpath);
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info(udev, "unable to find parent 'usb' device of '%s'\n",
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udev_device_get_syspath(dev));
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return 1;
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}
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/* mass storage */
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if (protocol == 6 && !use_usb_info) {
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struct sysfs_device *dev_scsi;
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struct udev_device *dev_scsi;
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const char *scsi_model, *scsi_vendor, *scsi_type, *scsi_rev;
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int host, bus, target, lun;
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/* get scsi device */
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dev_scsi = sysfs_device_get_parent_with_subsystem(udev, dev, "scsi");
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dev_scsi = udev_device_get_parent_with_subsystem(dev, "scsi");
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if (dev_scsi == NULL) {
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info(udev, "unable to find parent 'scsi' device of '%s'\n", devpath);
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info(udev, "unable to find parent 'scsi' device of '%s'\n",
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udev_device_get_syspath(dev));
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goto fallback;
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}
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if (sscanf(dev_scsi->kernel, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
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info(udev, "invalid scsi device '%s'\n", dev_scsi->kernel);
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if (sscanf(udev_device_get_sysname(dev_scsi), "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) {
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info(udev, "invalid scsi device '%s'\n", udev_device_get_sysname(dev_scsi));
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goto fallback;
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}
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/* Generic SPC-2 device */
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scsi_vendor = sysfs_attr_get_value(udev, dev_scsi->devpath, "vendor");
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scsi_vendor = udev_device_get_attr_value(dev_scsi, "vendor");
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if (!scsi_vendor) {
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info(udev, "%s: cannot get SCSI vendor attribute\n", dev_scsi->kernel);
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info(udev, "%s: cannot get SCSI vendor attribute\n",
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udev_device_get_sysname(dev_scsi));
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goto fallback;
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}
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set_str(vendor_str, scsi_vendor, sizeof(vendor_str)-1);
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scsi_model = sysfs_attr_get_value(udev, dev_scsi->devpath, "model");
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scsi_model = udev_device_get_attr_value(dev_scsi, "model");
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if (!scsi_model) {
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info(udev, "%s: cannot get SCSI model attribute\n", dev_scsi->kernel);
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info(udev, "%s: cannot get SCSI model attribute\n",
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udev_device_get_sysname(dev_scsi));
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goto fallback;
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}
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set_str(model_str, scsi_model, sizeof(model_str)-1);
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scsi_type = sysfs_attr_get_value(udev, dev_scsi->devpath, "type");
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scsi_type = udev_device_get_attr_value(dev_scsi, "type");
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if (!scsi_type) {
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info(udev, "%s: cannot get SCSI type attribute\n", dev_scsi->kernel);
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info(udev, "%s: cannot get SCSI type attribute\n",
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udev_device_get_sysname(dev_scsi));
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goto fallback;
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}
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set_scsi_type(type_str, scsi_type, sizeof(type_str)-1);
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scsi_rev = sysfs_attr_get_value(udev, dev_scsi->devpath, "rev");
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scsi_rev = udev_device_get_attr_value(dev_scsi, "rev");
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if (!scsi_rev) {
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info(udev, "%s: cannot get SCSI revision attribute\n", dev_scsi->kernel);
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info(udev, "%s: cannot get SCSI revision attribute\n",
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udev_device_get_sysname(dev_scsi));
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goto fallback;
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}
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set_str(revision_str, scsi_rev, sizeof(revision_str)-1);
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@ -305,10 +311,10 @@ fallback:
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const char *usb_vendor = NULL;
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if (!use_num_info)
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usb_vendor = sysfs_attr_get_value(udev, dev_usb->devpath, "manufacturer");
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usb_vendor = udev_device_get_attr_value(dev_usb, "manufacturer");
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if (!usb_vendor)
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usb_vendor = sysfs_attr_get_value(udev, dev_usb->devpath, "idVendor");
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usb_vendor = udev_device_get_attr_value(dev_usb, "idVendor");
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if (!usb_vendor) {
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info(udev, "No USB vendor information available\n");
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@ -321,10 +327,10 @@ fallback:
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const char *usb_model = NULL;
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if (!use_num_info)
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usb_model = sysfs_attr_get_value(udev, dev_usb->devpath, "product");
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usb_model = udev_device_get_attr_value(dev_usb, "product");
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if (!usb_model)
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usb_model = sysfs_attr_get_value(udev, dev_usb->devpath, "idProduct");
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usb_model = udev_device_get_attr_value(dev_usb, "idProduct");
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if (!usb_model) {
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dbg(udev, "No USB model information available\n");
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@ -336,7 +342,7 @@ fallback:
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if (revision_str[0] == '\0') {
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const char *usb_rev;
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usb_rev = sysfs_attr_get_value(udev, dev_usb->devpath, "bcdDevice");
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usb_rev = udev_device_get_attr_value(dev_usb, "bcdDevice");
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if (usb_rev)
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set_str(revision_str, usb_rev, sizeof(revision_str)-1);
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}
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@ -344,7 +350,7 @@ fallback:
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if (serial_str[0] == '\0') {
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const char *usb_serial;
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usb_serial = sysfs_attr_get_value(udev, dev_usb->devpath, "serial");
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usb_serial = udev_device_get_attr_value(dev_usb, "serial");
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if (usb_serial)
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set_str(serial_str, usb_serial, sizeof(serial_str)-1);
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}
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@ -353,18 +359,20 @@ fallback:
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int main(int argc, char **argv)
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{
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struct udev *udev;
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int retval = 0;
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const char *env;
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char devpath[MAX_PATH_LEN];
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static int export;
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static const struct option options[] = {
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{ "usb-info", no_argument, NULL, 'u' },
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{ "num-info", no_argument, NULL, 'n' },
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{ "export", no_argument, NULL, 'x' },
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{ "debug", no_argument, NULL, 'd' },
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{ "help", no_argument, NULL, 'h' },
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{}
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};
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struct udev *udev;
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struct udev_device *dev;
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char syspath[UTIL_PATH_SIZE];
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const char *devpath;
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static int export;
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int retval = 0;
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udev = udev_new();
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if (udev == NULL)
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@ -372,16 +380,20 @@ int main(int argc, char **argv)
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logging_init("usb_id");
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udev_set_log_fn(udev, log_fn);
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sysfs_init();
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while (1) {
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int option;
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option = getopt_long(argc, argv, "nuxh", options, NULL);
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option = getopt_long(argc, argv, "dnuxh", options, NULL);
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if (option == -1)
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break;
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switch (option) {
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case 'd':
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debug = 1;
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if (udev_get_log_priority(udev) < LOG_INFO)
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udev_set_log_priority(udev, LOG_INFO);
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break;
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case 'n':
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use_num_info = 1;
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use_usb_info = 1;
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@ -404,20 +416,24 @@ int main(int argc, char **argv)
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}
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}
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env = getenv("DEVPATH");
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if (env != NULL)
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util_strlcpy(devpath, env, sizeof(devpath));
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else {
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if (argv[optind] == NULL) {
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fprintf(stderr, "No device specified\n");
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retval = 1;
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goto exit;
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}
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util_strlcpy(devpath, argv[optind], sizeof(devpath));
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devpath = getenv("DEVPATH");
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if (devpath == NULL)
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devpath = argv[optind];
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if (devpath == NULL) {
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fprintf(stderr, "No device specified\n");
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retval = 1;
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goto exit;
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}
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retval = usb_id(udev, devpath);
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util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath));
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util_strlcat(syspath, devpath, sizeof(syspath));
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dev = udev_device_new_from_syspath(udev, syspath);
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if (dev == NULL) {
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err(udev, "unable to access '%s'\n", devpath);
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return 1;
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}
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retval = usb_id(dev);
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if (retval == 0) {
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char serial[256];
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@ -449,8 +465,8 @@ int main(int argc, char **argv)
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}
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exit:
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udev_device_unref(dev);
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udev_unref(udev);
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sysfs_cleanup();
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logging_close();
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return retval;
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}
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