*
* Copyright (C) 2009 Kay Sievers <kay.sievers@vrfy.org>
*
+ * Logic based on Hannes Reinecke's shell script.
+ *
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
#include <dirent.h>
#include <getopt.h>
-#include <../../udev/lib/libudev.h>
-#include <../../udev/udev.h>
+#include "libudev.h"
+#include "libudev-private.h"
-int debug;
+static int debug;
static void log_fn(struct udev *udev, int priority,
const char *file, int line, const char *fn,
return dev;
}
-/* find smallest number of instances of <syspath>/<name><number> */
-static int base_number(const char *syspath, const char *name)
-{
- char *base;
- char *pos;
- DIR *dir;
- struct dirent *dent;
- size_t len;
- int number = -1;
-
- base = strdup(syspath);
- if (base == NULL)
- goto out;
-
- pos = strrchr(base, '/');
- if (pos == NULL)
- goto out;
- pos[0] = '\0';
-
- len = strlen(name);
- dir = opendir(base);
- if (dir == 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, name, len) != 0)
- continue;
- i = strtoul(&dent->d_name[len], &rest, 10);
- if (rest[0] != '\0')
- continue;
- if (number == -1 || i < number)
- number = i;
- }
- closedir(dir);
-out:
- free(base);
- return number;
-}
-
-static struct udev_device *handle_fc(struct udev_device *parent, char **path)
+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;
return parent;
}
-static struct udev_device *handle_sas(struct udev_device *parent, char **path)
+static struct udev_device *handle_scsi_sas(struct udev_device *parent, char **path)
{
return NULL;
}
-static struct udev_device *handle_iscsi(struct udev_device *parent, char **path)
+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;
const char *addr;
const char *port;
- /* find iscsi session */
+ /* find iscsi session */
transportdev = parent;
while (1) {
transportdev = udev_device_get_parent(transportdev);
return parent;
}
-static struct udev_device *handle_scsi(struct udev_device *parent, char **path)
+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;
- int base;
+ 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 parent;
+ return NULL;
name = udev_device_get_sysname(parent);
if (sscanf(name, "%d:%d:%d:%d", &host, &bus, &target, &lun) != 4)
- return parent;
+ return NULL;
/* rebase host offset to get the local relative number */
- base = base_number(udev_device_get_syspath(hostdev), "host");
- if (base < 0)
- return parent;
- host -= base;
+ 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;
}
-static struct udev_device *handle_scsi_lun(struct udev_device *parent, char **path)
+static struct udev_device *handle_scsi(struct udev_device *parent, char **path)
{
const char *devtype;
const char *name;
goto out;
}
- /* broken scsi transport devices would need a subsystem */
+ /* lousy scsi sysfs does not have a "subsystem" for the transport */
name = udev_device_get_syspath(parent);
- /* fibre channel */
if (strstr(name, "/rport-") != NULL) {
- parent = handle_fc(parent, path);
+ parent = handle_scsi_fibre_channel(parent, path);
goto out;
}
- /* sas */
if (strstr(name, "/end_device-") != NULL) {
- parent = handle_sas(parent, path);
+ parent = handle_scsi_sas(parent, path);
goto out;
}
- /* iSCSI */
if (strstr(name, "/session") != NULL) {
- parent = handle_iscsi(parent, path);
+ parent = handle_scsi_iscsi(parent, path);
goto out;
}
- /* default */
- parent = handle_scsi(parent, path);
+ parent = handle_scsi_default(parent, path);
out:
return parent;
}
if (udev == NULL)
goto exit;
- logging_init("usb_id");
+ udev_log_init("path_id");
udev_set_log_fn(udev, log_fn);
while (1) {
} else if (strcmp(subsys, "scsi_tape") == 0) {
handle_scsi_tape(parent, &path_suffix);
} else if (strcmp(subsys, "scsi") == 0) {
- parent = handle_scsi_lun(parent, &path);
+ parent = handle_scsi(parent, &path);
} else if (strcmp(subsys, "cciss") == 0) {
handle_cciss(parent, &path);
} else if (strcmp(subsys, "usb") == 0) {
udev_device_unref(dev);
exit:
udev_unref(udev);
- logging_close();
+ udev_log_close();
return rc;
}
~ianmdlvl / elogind.git / blobdiff