static int path_prepend(char **path, const char *fmt, ...)
{
- va_list va;
- char *pre;
- int err = 0;
-
- va_start(va, fmt);
- err = vasprintf(&pre, fmt, va);
- va_end(va);
- if (err < 0)
- goto out;
-
- if (*path != NULL) {
- char *new;
-
- err = asprintf(&new, "%s-%s", pre, *path);
- free(pre);
- if (err < 0)
- goto out;
- free(*path);
- *path = new;
- } else {
- *path = pre;
- }
+ va_list va;
+ char *pre;
+ int err = 0;
+
+ va_start(va, fmt);
+ err = vasprintf(&pre, fmt, va);
+ va_end(va);
+ if (err < 0)
+ goto out;
+
+ if (*path != NULL) {
+ char *new;
+
+ err = asprintf(&new, "%s-%s", pre, *path);
+ free(pre);
+ if (err < 0)
+ goto out;
+ free(*path);
+ *path = new;
+ } else {
+ *path = pre;
+ }
out:
- return err;
+ return err;
}
/*
*/
static int format_lun_number(struct udev_device *dev, char **path)
{
- unsigned long lun = strtoul(udev_device_get_sysnum(dev), NULL, 10);
+ unsigned long lun = strtoul(udev_device_get_sysnum(dev), NULL, 10);
- /* address method 0, peripheral device addressing with bus id of zero */
- if (lun < 256)
- return path_prepend(path, "lun-%d", lun);
- /* handle all other lun addressing methods by using a variant of the original lun format */
- return path_prepend(path, "lun-0x%04x%04x00000000", (lun & 0xffff), (lun >> 16) & 0xffff);
+ /* address method 0, peripheral device addressing with bus id of zero */
+ if (lun < 256)
+ return path_prepend(path, "lun-%d", lun);
+ /* handle all other lun addressing methods by using a variant of the original lun format */
+ return path_prepend(path, "lun-0x%04x%04x00000000", (lun & 0xffff), (lun >> 16) & 0xffff);
}
static struct udev_device *skip_subsystem(struct udev_device *dev, const char *subsys)
{
- struct udev_device *parent = dev;
-
- while (parent != NULL) {
- const char *subsystem;
-
- subsystem = udev_device_get_subsystem(parent);
- if (subsystem == NULL || strcmp(subsystem, subsys) != 0)
- break;
- dev = parent;
- parent = udev_device_get_parent(parent);
- }
- return dev;
+ struct udev_device *parent = dev;
+
+ while (parent != NULL) {
+ const char *subsystem;
+
+ subsystem = udev_device_get_subsystem(parent);
+ if (subsystem == NULL || strcmp(subsystem, subsys) != 0)
+ break;
+ dev = parent;
+ parent = udev_device_get_parent(parent);
+ }
+ return dev;
}
static struct udev_device *handle_scsi_fibre_channel(struct udev_device *parent, char **path)
{
- struct udev *udev = udev_device_get_udev(parent);
- struct udev_device *targetdev;
- struct udev_device *fcdev = NULL;
- const char *port;
- char *lun = NULL;;
-
- targetdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_target");
- if (targetdev == NULL)
- return NULL;
-
- fcdev = udev_device_new_from_subsystem_sysname(udev, "fc_transport", udev_device_get_sysname(targetdev));
- if (fcdev == NULL)
- return NULL;
- port = udev_device_get_sysattr_value(fcdev, "port_name");
- if (port == NULL) {
- parent = NULL;
- goto out;
- }
-
- format_lun_number(parent, &lun);
- path_prepend(path, "fc-%s-%s", port, lun);
- if (lun)
- free(lun);
+ struct udev *udev = udev_device_get_udev(parent);
+ struct udev_device *targetdev;
+ struct udev_device *fcdev = NULL;
+ const char *port;
+ char *lun = NULL;;
+
+ targetdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_target");
+ if (targetdev == NULL)
+ return NULL;
+
+ fcdev = udev_device_new_from_subsystem_sysname(udev, "fc_transport", udev_device_get_sysname(targetdev));
+ if (fcdev == NULL)
+ return NULL;
+ port = udev_device_get_sysattr_value(fcdev, "port_name");
+ if (port == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ format_lun_number(parent, &lun);
+ path_prepend(path, "fc-%s-%s", port, lun);
+ if (lun)
+ free(lun);
out:
- udev_device_unref(fcdev);
- return parent;
+ udev_device_unref(fcdev);
+ return parent;
}
static struct udev_device *handle_scsi_sas(struct udev_device *parent, char **path)
{
- struct udev *udev = udev_device_get_udev(parent);
- struct udev_device *targetdev;
- struct udev_device *target_parent;
- struct udev_device *sasdev;
- const char *sas_address;
- char *lun = NULL;
-
- targetdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_target");
- if (targetdev == NULL)
- return NULL;
-
- target_parent = udev_device_get_parent(targetdev);
- if (target_parent == NULL)
- return NULL;
-
- sasdev = udev_device_new_from_subsystem_sysname(udev, "sas_device",
- udev_device_get_sysname(target_parent));
- if (sasdev == NULL)
- return NULL;
-
- sas_address = udev_device_get_sysattr_value(sasdev, "sas_address");
- if (sas_address == NULL) {
- parent = NULL;
- goto out;
- }
-
- format_lun_number(parent, &lun);
- path_prepend(path, "sas-%s-%s", sas_address, lun);
- if (lun)
- free(lun);
+ struct udev *udev = udev_device_get_udev(parent);
+ struct udev_device *targetdev;
+ struct udev_device *target_parent;
+ struct udev_device *sasdev;
+ const char *sas_address;
+ char *lun = NULL;
+
+ targetdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_target");
+ if (targetdev == NULL)
+ return NULL;
+
+ target_parent = udev_device_get_parent(targetdev);
+ if (target_parent == NULL)
+ return NULL;
+
+ sasdev = udev_device_new_from_subsystem_sysname(udev, "sas_device",
+ udev_device_get_sysname(target_parent));
+ if (sasdev == NULL)
+ return NULL;
+
+ sas_address = udev_device_get_sysattr_value(sasdev, "sas_address");
+ if (sas_address == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ format_lun_number(parent, &lun);
+ path_prepend(path, "sas-%s-%s", sas_address, lun);
+ if (lun)
+ free(lun);
out:
- udev_device_unref(sasdev);
- return parent;
+ udev_device_unref(sasdev);
+ return parent;
}
static struct udev_device *handle_scsi_iscsi(struct udev_device *parent, char **path)
{
- struct udev *udev = udev_device_get_udev(parent);
- struct udev_device *transportdev;
- struct udev_device *sessiondev = NULL;
- const char *target;
- char *connname;
- struct udev_device *conndev = NULL;
- const char *addr;
- const char *port;
- char *lun = NULL;
-
- /* find iscsi session */
- transportdev = parent;
- for (;;) {
- transportdev = udev_device_get_parent(transportdev);
- if (transportdev == NULL)
- return NULL;
- if (strncmp(udev_device_get_sysname(transportdev), "session", 7) == 0)
- break;
- }
-
- /* find iscsi session device */
- sessiondev = udev_device_new_from_subsystem_sysname(udev, "iscsi_session", udev_device_get_sysname(transportdev));
- if (sessiondev == NULL)
- return NULL;
- target = udev_device_get_sysattr_value(sessiondev, "targetname");
- if (target == NULL) {
- parent = NULL;
- goto out;
- }
-
- if (asprintf(&connname, "connection%s:0", udev_device_get_sysnum(transportdev)) < 0) {
- parent = NULL;
- goto out;
- }
- conndev = udev_device_new_from_subsystem_sysname(udev, "iscsi_connection", connname);
- free(connname);
- if (conndev == NULL) {
- parent = NULL;
- goto out;
- }
- addr = udev_device_get_sysattr_value(conndev, "persistent_address");
- port = udev_device_get_sysattr_value(conndev, "persistent_port");
- if (addr == NULL || port == NULL) {
- parent = NULL;
- goto out;
- }
-
- format_lun_number(parent, &lun);
- path_prepend(path, "ip-%s:%s-iscsi-%s-%s", addr, port, target, lun);
- if (lun)
- free(lun);
+ struct udev *udev = udev_device_get_udev(parent);
+ struct udev_device *transportdev;
+ struct udev_device *sessiondev = NULL;
+ const char *target;
+ char *connname;
+ struct udev_device *conndev = NULL;
+ const char *addr;
+ const char *port;
+ char *lun = NULL;
+
+ /* find iscsi session */
+ transportdev = parent;
+ for (;;) {
+ transportdev = udev_device_get_parent(transportdev);
+ if (transportdev == NULL)
+ return NULL;
+ if (strncmp(udev_device_get_sysname(transportdev), "session", 7) == 0)
+ break;
+ }
+
+ /* find iscsi session device */
+ sessiondev = udev_device_new_from_subsystem_sysname(udev, "iscsi_session", udev_device_get_sysname(transportdev));
+ if (sessiondev == NULL)
+ return NULL;
+ target = udev_device_get_sysattr_value(sessiondev, "targetname");
+ if (target == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ if (asprintf(&connname, "connection%s:0", udev_device_get_sysnum(transportdev)) < 0) {
+ parent = NULL;
+ goto out;
+ }
+ conndev = udev_device_new_from_subsystem_sysname(udev, "iscsi_connection", connname);
+ free(connname);
+ if (conndev == NULL) {
+ parent = NULL;
+ goto out;
+ }
+ addr = udev_device_get_sysattr_value(conndev, "persistent_address");
+ port = udev_device_get_sysattr_value(conndev, "persistent_port");
+ if (addr == NULL || port == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ format_lun_number(parent, &lun);
+ path_prepend(path, "ip-%s:%s-iscsi-%s-%s", addr, port, target, lun);
+ if (lun)
+ free(lun);
out:
- udev_device_unref(sessiondev);
- udev_device_unref(conndev);
- return parent;
+ udev_device_unref(sessiondev);
+ udev_device_unref(conndev);
+ return parent;
}
static struct udev_device *handle_scsi_default(struct udev_device *parent, char **path)
{
- struct udev_device *hostdev;
- int host, bus, target, lun;
- const char *name;
- char *base;
- char *pos;
- DIR *dir;
- struct dirent *dent;
- int basenum;
-
- hostdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_host");
- if (hostdev == NULL)
- return NULL;
-
- name = udev_device_get_sysname(parent);
- if (sscanf(name, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4)
- return NULL;
-
- /* rebase host offset to get the local relative number */
- basenum = -1;
- base = strdup(udev_device_get_syspath(hostdev));
- if (base == NULL)
- return NULL;
- pos = strrchr(base, '/');
- if (pos == NULL) {
- parent = NULL;
- goto out;
- }
- pos[0] = '\0';
- dir = opendir(base);
- if (dir == NULL) {
- parent = NULL;
- goto out;
- }
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- char *rest;
- int i;
-
- if (dent->d_name[0] == '.')
- continue;
- if (dent->d_type != DT_DIR && dent->d_type != DT_LNK)
- continue;
- if (strncmp(dent->d_name, "host", 4) != 0)
- continue;
- i = strtoul(&dent->d_name[4], &rest, 10);
- if (rest[0] != '\0')
- continue;
- if (basenum == -1 || i < basenum)
- basenum = i;
- }
- closedir(dir);
- if (basenum == -1) {
- parent = NULL;
- goto out;
- }
- host -= basenum;
-
- path_prepend(path, "scsi-%u:%u:%u:%u", host, bus, target, lun);
+ struct udev_device *hostdev;
+ int host, bus, target, lun;
+ const char *name;
+ char *base;
+ char *pos;
+ DIR *dir;
+ struct dirent *dent;
+ int basenum;
+
+ hostdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_host");
+ if (hostdev == NULL)
+ return NULL;
+
+ name = udev_device_get_sysname(parent);
+ if (sscanf(name, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4)
+ return NULL;
+
+ /* rebase host offset to get the local relative number */
+ basenum = -1;
+ base = strdup(udev_device_get_syspath(hostdev));
+ if (base == NULL)
+ return NULL;
+ pos = strrchr(base, '/');
+ if (pos == NULL) {
+ parent = NULL;
+ goto out;
+ }
+ pos[0] = '\0';
+ dir = opendir(base);
+ if (dir == NULL) {
+ parent = NULL;
+ goto out;
+ }
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ char *rest;
+ int i;
+
+ if (dent->d_name[0] == '.')
+ continue;
+ if (dent->d_type != DT_DIR && dent->d_type != DT_LNK)
+ continue;
+ if (strncmp(dent->d_name, "host", 4) != 0)
+ continue;
+ i = strtoul(&dent->d_name[4], &rest, 10);
+ if (rest[0] != '\0')
+ continue;
+ if (basenum == -1 || i < basenum)
+ basenum = i;
+ }
+ closedir(dir);
+ if (basenum == -1) {
+ parent = NULL;
+ goto out;
+ }
+ host -= basenum;
+
+ path_prepend(path, "scsi-%u:%u:%u:%u", host, bus, target, lun);
out:
- free(base);
- return hostdev;
+ free(base);
+ return hostdev;
}
static struct udev_device *handle_scsi(struct udev_device *parent, char **path)
{
- const char *devtype;
- const char *name;
- const char *id;
-
- devtype = udev_device_get_devtype(parent);
- if (devtype == NULL || strcmp(devtype, "scsi_device") != 0)
- return parent;
-
- /* firewire */
- id = udev_device_get_sysattr_value(parent, "ieee1394_id");
- if (id != NULL) {
- parent = skip_subsystem(parent, "scsi");
- path_prepend(path, "ieee1394-0x%s", id);
- goto out;
- }
-
- /* lousy scsi sysfs does not have a "subsystem" for the transport */
- name = udev_device_get_syspath(parent);
-
- if (strstr(name, "/rport-") != NULL) {
- parent = handle_scsi_fibre_channel(parent, path);
- goto out;
- }
-
- if (strstr(name, "/end_device-") != NULL) {
- parent = handle_scsi_sas(parent, path);
- goto out;
- }
-
- if (strstr(name, "/session") != NULL) {
- parent = handle_scsi_iscsi(parent, path);
- goto out;
- }
-
- parent = handle_scsi_default(parent, path);
+ const char *devtype;
+ const char *name;
+ const char *id;
+
+ devtype = udev_device_get_devtype(parent);
+ if (devtype == NULL || strcmp(devtype, "scsi_device") != 0)
+ return parent;
+
+ /* firewire */
+ id = udev_device_get_sysattr_value(parent, "ieee1394_id");
+ if (id != NULL) {
+ parent = skip_subsystem(parent, "scsi");
+ path_prepend(path, "ieee1394-0x%s", id);
+ goto out;
+ }
+
+ /* lousy scsi sysfs does not have a "subsystem" for the transport */
+ name = udev_device_get_syspath(parent);
+
+ if (strstr(name, "/rport-") != NULL) {
+ parent = handle_scsi_fibre_channel(parent, path);
+ goto out;
+ }
+
+ if (strstr(name, "/end_device-") != NULL) {
+ parent = handle_scsi_sas(parent, path);
+ goto out;
+ }
+
+ if (strstr(name, "/session") != NULL) {
+ parent = handle_scsi_iscsi(parent, path);
+ goto out;
+ }
+
+ parent = handle_scsi_default(parent, path);
out:
- return parent;
+ return parent;
}
static void handle_scsi_tape(struct udev_device *dev, char **path)
{
- const char *name;
+ const char *name;
- /* must be the last device in the syspath */
- if (*path != NULL)
- return;
+ /* must be the last device in the syspath */
+ if (*path != NULL)
+ return;
- name = udev_device_get_sysname(dev);
- if (strncmp(name, "nst", 3) == 0 && strchr("lma", name[3]) != NULL)
- path_prepend(path, "nst%c", name[3]);
- else if (strncmp(name, "st", 2) == 0 && strchr("lma", name[2]) != NULL)
- path_prepend(path, "st%c", name[2]);
+ name = udev_device_get_sysname(dev);
+ if (strncmp(name, "nst", 3) == 0 && strchr("lma", name[3]) != NULL)
+ path_prepend(path, "nst%c", name[3]);
+ else if (strncmp(name, "st", 2) == 0 && strchr("lma", name[2]) != NULL)
+ path_prepend(path, "st%c", name[2]);
}
static struct udev_device *handle_usb(struct udev_device *parent, char **path)
{
- const char *devtype;
- const char *str;
- const char *port;
-
- devtype = udev_device_get_devtype(parent);
- if (devtype == NULL)
- return parent;
- if (strcmp(devtype, "usb_interface") != 0 && strcmp(devtype, "usb_device") != 0)
- return parent;
-
- str = udev_device_get_sysname(parent);
- port = strchr(str, '-');
- if (port == NULL)
- return parent;
- port++;
-
- parent = skip_subsystem(parent, "usb");
- path_prepend(path, "usb-0:%s", port);
- return parent;
+ const char *devtype;
+ const char *str;
+ const char *port;
+
+ devtype = udev_device_get_devtype(parent);
+ if (devtype == NULL)
+ return parent;
+ if (strcmp(devtype, "usb_interface") != 0 && strcmp(devtype, "usb_device") != 0)
+ return parent;
+
+ str = udev_device_get_sysname(parent);
+ port = strchr(str, '-');
+ if (port == NULL)
+ return parent;
+ port++;
+
+ parent = skip_subsystem(parent, "usb");
+ path_prepend(path, "usb-0:%s", port);
+ return parent;
}
static struct udev_device *handle_cciss(struct udev_device *parent, char **path)
{
- return NULL;
+ return NULL;
}
static struct udev_device *handle_ccw(struct udev_device *parent, struct udev_device *dev, char **path)
{
- struct udev_device *scsi_dev;
-
- scsi_dev = udev_device_get_parent_with_subsystem_devtype(dev, "scsi", "scsi_device");
- if (scsi_dev != NULL) {
- const char *wwpn;
- const char *lun;
- const char *hba_id;
-
- hba_id = udev_device_get_sysattr_value(scsi_dev, "hba_id");
- wwpn = udev_device_get_sysattr_value(scsi_dev, "wwpn");
- lun = udev_device_get_sysattr_value(scsi_dev, "fcp_lun");
- if (hba_id != NULL && lun != NULL && wwpn != NULL) {
- path_prepend(path, "ccw-%s-zfcp-%s:%s", hba_id, wwpn, lun);
- goto out;
- }
- }
-
- path_prepend(path, "ccw-%s", udev_device_get_sysname(parent));
+ struct udev_device *scsi_dev;
+
+ scsi_dev = udev_device_get_parent_with_subsystem_devtype(dev, "scsi", "scsi_device");
+ if (scsi_dev != NULL) {
+ const char *wwpn;
+ const char *lun;
+ const char *hba_id;
+
+ hba_id = udev_device_get_sysattr_value(scsi_dev, "hba_id");
+ wwpn = udev_device_get_sysattr_value(scsi_dev, "wwpn");
+ lun = udev_device_get_sysattr_value(scsi_dev, "fcp_lun");
+ if (hba_id != NULL && lun != NULL && wwpn != NULL) {
+ path_prepend(path, "ccw-%s-zfcp-%s:%s", hba_id, wwpn, lun);
+ goto out;
+ }
+ }
+
+ path_prepend(path, "ccw-%s", udev_device_get_sysname(parent));
out:
- parent = skip_subsystem(parent, "ccw");
- return parent;
+ parent = skip_subsystem(parent, "ccw");
+ return parent;
}
static int builtin_path_id(struct udev_device *dev, int argc, char *argv[], bool test)
{
- struct udev_device *parent;
- char *path = NULL;
-
- /* S390 ccw bus */
- parent = udev_device_get_parent_with_subsystem_devtype(dev, "ccw", NULL);
- if (parent != NULL) {
- handle_ccw(parent, dev, &path);
- goto out;
- }
-
- /* walk up the chain of devices and compose path */
- parent = dev;
- while (parent != NULL) {
- const char *subsys;
-
- subsys = udev_device_get_subsystem(parent);
- if (subsys == NULL) {
- ;
- } else if (strcmp(subsys, "scsi_tape") == 0) {
- handle_scsi_tape(parent, &path);
- } else if (strcmp(subsys, "scsi") == 0) {
- parent = handle_scsi(parent, &path);
- } else if (strcmp(subsys, "cciss") == 0) {
- handle_cciss(parent, &path);
- } else if (strcmp(subsys, "usb") == 0) {
- parent = handle_usb(parent, &path);
- } else if (strcmp(subsys, "serio") == 0) {
- path_prepend(&path, "serio-%s", udev_device_get_sysnum(parent));
- parent = skip_subsystem(parent, "serio");
- } else if (strcmp(subsys, "pci") == 0) {
- path_prepend(&path, "pci-%s", udev_device_get_sysname(parent));
- parent = skip_subsystem(parent, "pci");
- } else if (strcmp(subsys, "platform") == 0) {
- path_prepend(&path, "platform-%s", udev_device_get_sysname(parent));
- parent = skip_subsystem(parent, "platform");
- } else if (strcmp(subsys, "acpi") == 0) {
- path_prepend(&path, "acpi-%s", udev_device_get_sysname(parent));
- parent = skip_subsystem(parent, "acpi");
- } else if (strcmp(subsys, "xen") == 0) {
- path_prepend(&path, "xen-%s", udev_device_get_sysname(parent));
- parent = skip_subsystem(parent, "xen");
- } else if (strcmp(subsys, "virtio") == 0) {
- path_prepend(&path, "virtio-pci-%s", udev_device_get_sysname(parent));
- parent = skip_subsystem(parent, "virtio");
- }
-
- parent = udev_device_get_parent(parent);
- }
+ struct udev_device *parent;
+ char *path = NULL;
+
+ /* S390 ccw bus */
+ parent = udev_device_get_parent_with_subsystem_devtype(dev, "ccw", NULL);
+ if (parent != NULL) {
+ handle_ccw(parent, dev, &path);
+ goto out;
+ }
+
+ /* walk up the chain of devices and compose path */
+ parent = dev;
+ while (parent != NULL) {
+ const char *subsys;
+
+ subsys = udev_device_get_subsystem(parent);
+ if (subsys == NULL) {
+ ;
+ } else if (strcmp(subsys, "scsi_tape") == 0) {
+ handle_scsi_tape(parent, &path);
+ } else if (strcmp(subsys, "scsi") == 0) {
+ parent = handle_scsi(parent, &path);
+ } else if (strcmp(subsys, "cciss") == 0) {
+ handle_cciss(parent, &path);
+ } else if (strcmp(subsys, "usb") == 0) {
+ parent = handle_usb(parent, &path);
+ } else if (strcmp(subsys, "serio") == 0) {
+ path_prepend(&path, "serio-%s", udev_device_get_sysnum(parent));
+ parent = skip_subsystem(parent, "serio");
+ } else if (strcmp(subsys, "pci") == 0) {
+ path_prepend(&path, "pci-%s", udev_device_get_sysname(parent));
+ parent = skip_subsystem(parent, "pci");
+ } else if (strcmp(subsys, "platform") == 0) {
+ path_prepend(&path, "platform-%s", udev_device_get_sysname(parent));
+ parent = skip_subsystem(parent, "platform");
+ } else if (strcmp(subsys, "acpi") == 0) {
+ path_prepend(&path, "acpi-%s", udev_device_get_sysname(parent));
+ parent = skip_subsystem(parent, "acpi");
+ } else if (strcmp(subsys, "xen") == 0) {
+ path_prepend(&path, "xen-%s", udev_device_get_sysname(parent));
+ parent = skip_subsystem(parent, "xen");
+ } else if (strcmp(subsys, "virtio") == 0) {
+ path_prepend(&path, "virtio-pci-%s", udev_device_get_sysname(parent));
+ parent = skip_subsystem(parent, "virtio");
+ }
+
+ parent = udev_device_get_parent(parent);
+ }
out:
- if (path != NULL) {
- char tag[UTIL_NAME_SIZE];
- size_t i;
- const char *p;
-
- /* compose valid udev tag name */
- for (p = path, i = 0; *p; p++) {
- if ((*p >= '0' && *p <= '9') ||
- (*p >= 'A' && *p <= 'Z') ||
- (*p >= 'a' && *p <= 'z') ||
- *p == '-') {
- tag[i++] = *p;
- continue;
- }
-
- /* skip all leading '_' */
- if (i == 0)
- continue;
-
- /* avoid second '_' */
- if (tag[i-1] == '_')
- continue;
-
- tag[i++] = '_';
- }
- /* strip trailing '_' */
- while (i > 0 && tag[i-1] == '_')
- i--;
- tag[i] = '\0';
-
- udev_builtin_add_property(dev, test, "ID_PATH", path);
- udev_builtin_add_property(dev, test, "ID_PATH_TAG", tag);
- free(path);
- return EXIT_SUCCESS;
- }
- return EXIT_FAILURE;
+ if (path != NULL) {
+ char tag[UTIL_NAME_SIZE];
+ size_t i;
+ const char *p;
+
+ /* compose valid udev tag name */
+ for (p = path, i = 0; *p; p++) {
+ if ((*p >= '0' && *p <= '9') ||
+ (*p >= 'A' && *p <= 'Z') ||
+ (*p >= 'a' && *p <= 'z') ||
+ *p == '-') {
+ tag[i++] = *p;
+ continue;
+ }
+
+ /* skip all leading '_' */
+ if (i == 0)
+ continue;
+
+ /* avoid second '_' */
+ if (tag[i-1] == '_')
+ continue;
+
+ tag[i++] = '_';
+ }
+ /* strip trailing '_' */
+ while (i > 0 && tag[i-1] == '_')
+ i--;
+ tag[i] = '\0';
+
+ udev_builtin_add_property(dev, test, "ID_PATH", path);
+ udev_builtin_add_property(dev, test, "ID_PATH_TAG", tag);
+ free(path);
+ return EXIT_SUCCESS;
+ }
+ return EXIT_FAILURE;
}
const struct udev_builtin udev_builtin_path_id = {
- .name = "path_id",
- .cmd = builtin_path_id,
- .help = "compose persistent device path",
- .run_once = true,
+ .name = "path_id",
+ .cmd = builtin_path_id,
+ .help = "compose persistent device path",
+ .run_once = true,
};
~ianmdlvl / elogind.git / blobdiff