X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=extras%2Fpath_id%2Fpath_id.c;h=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hp=9e77b8a7cc2a4e10ecef0c234abe5ce585ac30b8;hb=ee9bf6bda9a3367295ca56842bb29bf197d90f48;hpb=8992abf5528fe332ca041f6c7d03df820406feb4

diff --git a/extras/path_id/path_id.c b/extras/path_id/path_id.c
index 9e77b8a7c..e69de29bb 100644
--- a/extras/path_id/path_id.c
+++ b/extras/path_id/path_id.c
@@ -1,521 +0,0 @@
-/*
- * compose persistent device path
- *
- * 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
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <string.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <dirent.h>
-#include <getopt.h>
-
-#include "libudev.h"
-#include "libudev-private.h"
-
-static 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)
-{
-	if (debug) {
-		fprintf(stderr, "%s: ", fn != NULL ? fn : file);
-		vfprintf(stderr, format, args);
-	} else {
-		vsyslog(priority, format, args);
-	}
-}
-
-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;
-	}
-out:
-	return err;
-}
-
-/*
-** Linux only supports 32 bit luns.
-** See drivers/scsi/scsi_scan.c::scsilun_to_int() for more details.
-*/
-static int format_lun_number(struct udev_device *dev, char **path)
-{
-	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);
-}
-
-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;
-}
-
-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);
-out:
-	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);
-out:
-	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);
-out:
-	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);
-out:
-	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);
-out:
-	return parent;
-}
-
-static void handle_scsi_tape(struct udev_device *dev, char **path)
-{
-	const char *name;
-
-	/* 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]);
-}
-
-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;
-}
-
-static struct udev_device *handle_cciss(struct udev_device *parent, char **path)
-{
-	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));
-out:
-	parent = skip_subsystem(parent, "ccw");
-	return parent;
-}
-
-int main(int argc, char **argv)
-{
-	static const struct option options[] = {
-		{ "debug", no_argument, NULL, 'd' },
-		{ "help", no_argument, NULL, 'h' },
-		{}
-	};
-	struct udev *udev;
-	struct udev_device *dev;
-	struct udev_device *parent;
-	char syspath[UTIL_PATH_SIZE];
-	const char *devpath;
-	char *path = NULL;
-	int rc = EXIT_FAILURE;
-
-	udev = udev_new();
-	if (udev == NULL)
-		goto exit;
-
-	udev_log_init("path_id");
-	udev_set_log_fn(udev, log_fn);
-
-	while (1) {
-		int option;
-
-		option = getopt_long(argc, argv, "dh", 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 'h':
-			printf("Usage: path_id [--debug] [--help] <devpath>\n"
-			       "  --debug    print debug information\n"
-			       "  --help      print this help text\n\n");
-			goto exit;
-		}
-	}
-
-	devpath = argv[optind];
-	if (devpath == NULL) {
-		fprintf(stderr, "No device specified\n");
-		rc = 2;
-		goto exit;
-	}
-
-	util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), devpath, NULL);
-	dev = udev_device_new_from_syspath(udev, syspath);
-	if (dev == NULL) {
-		fprintf(stderr, "unable to access '%s'\n", devpath);
-		rc = 3;
-		goto exit;
-	}
-
-	/* 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, "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) {
-		printf("ID_PATH=%s\n", path);
-		free(path);
-		rc = EXIT_SUCCESS;
-	}
-
-	udev_device_unref(dev);
-exit:
-	udev_unref(udev);
-	udev_log_close();
-	return rc;
-}