diff options
| -rw-r--r-- | extras/path_id/path_id.c | 134 |
1 files changed, 87 insertions, 47 deletions
diff --git a/extras/path_id/path_id.c b/extras/path_id/path_id.c index 872f0c932e..603e108aeb 100644 --- a/extras/path_id/path_id.c +++ b/extras/path_id/path_id.c @@ -134,35 +134,88 @@ out: return number; } -static struct udev_device *handle_scsi(struct udev_device *dev, char **path) +static struct udev_device *handle_fc(struct udev_device *parent, char **path) +{ + path_prepend(path, "fc-PATH_ID_NOT_IMPLEMENTED"); + return parent; +} + +static struct udev_device *handle_sas(struct udev_device *parent, char **path) +{ + path_prepend(path, "sas-PATH_ID_NOT_IMPLEMENTED"); + return parent; +} + +static struct udev_device *handle_iscsi(struct udev_device *parent, char **path) +{ + path_prepend(path, "ip-PATH_ID_NOT_IMPLEMENTED"); + return parent; +} + +static struct udev_device *handle_scsi(struct udev_device *parent, char **path) { - const char *devtype; struct udev_device *hostdev; - const char *name; int host, bus, target, lun; + const char *name; int base; - devtype = udev_device_get_devtype(dev); - if (devtype == NULL || strcmp(devtype, "scsi_device") != 0) - return dev; - - hostdev = udev_device_get_parent_with_subsystem_devtype(dev, "scsi", "scsi_host"); + hostdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_host"); if (hostdev == NULL) - return dev; + return parent; - name = udev_device_get_sysname(dev); + name = udev_device_get_sysname(parent); if (sscanf(name, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4) - return dev; + return parent; /* rebase host offset to get the local relative number */ base = base_number(udev_device_get_syspath(hostdev), "host"); if (base < 0) - return dev; + return parent; host -= base; path_prepend(path, "scsi-%u:%u:%u:%u", host, bus, target, lun); - dev = skip_subsystem(dev, "scsi"); - return dev; + return hostdev; +} + +static struct udev_device *handle_scsi_lun(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) { + path_prepend(path, "ieee1394-0x%s", id); + goto out; + } + + name = udev_device_get_syspath(parent); + + /* fibre channel */ + if (strstr(name, "/rport-") != NULL) { + parent = handle_fc(parent, path); + goto out; + } + + /* sas */ + if (strstr(name, "/end_device-") != NULL) { + parent = handle_sas(parent, path); + goto out; + } + + if (strstr(name, "/session") != NULL) { + parent = handle_iscsi(parent, path); + goto out; + } + + parent = handle_scsi(parent, path); +out: + return parent; } static void handle_scsi_tape(struct udev_device *dev, char **suffix) @@ -176,41 +229,30 @@ static void handle_scsi_tape(struct udev_device *dev, char **suffix) asprintf(suffix, "st%c", name[2]); } -static struct udev_device *handle_usb(struct udev_device *dev, char **path) +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(dev); + devtype = udev_device_get_devtype(parent); if (devtype == NULL || strcmp(devtype, "usb_interface") != 0) - return dev; + return parent; - str = udev_device_get_sysname(dev); + str = udev_device_get_sysname(parent); port = strchr(str, '-'); if (port == NULL) - return dev; + return parent; port++; - dev = skip_subsystem(dev, "usb"); + parent = skip_subsystem(parent, "usb"); path_prepend(path, "usb-0:%s", port); - return dev; + return parent; } -static struct udev_device *handle_firewire(struct udev_device *parent, struct udev_device *dev, char **path) +static struct udev_device *handle_cciss(struct udev_device *parent, 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 *id; - - id = udev_device_get_sysattr_value(scsi_dev, "ieee1394_id"); - if (id != NULL) - path_prepend(path, "ieee1394-0x%s", id); - } - - parent = skip_subsystem(parent, "firewire"); + path_prepend(path, "cciss-PATH_ID_NOT_IMPLEMENTED"); return parent; } @@ -303,6 +345,14 @@ int main(int argc, char **argv) path = NULL; path_suffix = 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; @@ -314,24 +364,14 @@ int main(int argc, char **argv) } else if (strcmp(subsys, "scsi_tape") == 0) { handle_scsi_tape(parent, &path_suffix); } else if (strcmp(subsys, "scsi") == 0) { - parent = handle_scsi(parent, &path); - } else if (strcmp(subsys, "fc_transport") == 0) { - ; //handle_fc(); - } else if (strcmp(subsys, "sas_end_device") == 0) { - ; //handle_sas(); - } else if (strcmp(subsys, "iscsi_session") == 0) { - ; //handle_iscsi() - } else if (strcmp(subsys, "ccw") == 0) { - handle_ccw(parent, dev, &path); + parent = handle_scsi_lun(parent, &path); } else if (strcmp(subsys, "cciss") == 0) { - ; //handle_cciss(); + 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, "firewire") == 0 || strcmp(subsys, "ieee1394") == 0) { - parent = handle_firewire(parent, dev, &path); } else if (strcmp(subsys, "pci") == 0) { path_prepend(&path, "pci-%s", udev_device_get_sysname(parent)); parent = skip_subsystem(parent, "pci"); @@ -345,7 +385,7 @@ int main(int argc, char **argv) parent = udev_device_get_parent(parent); } - +out: if (path != NULL) { if (path_suffix != NULL) { printf("ID_PATH=%s%s\n", path, path_suffix); |