X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=extras%2Fscsi_id%2Fscsi_id.c;h=6458f2b7ac1ce553c89f243f431b108ed2baeaa0;hp=e893987868cf2f7a7ddb5674b0d6dda975c764d5;hb=6ecd4d1e364ea8104c83e36b82d1c23835fb104b;hpb=062db23d5eb303ef49d2ff805381229932f44246

diff --git a/extras/scsi_id/scsi_id.c b/extras/scsi_id/scsi_id.c
index e89398786..6458f2b7a 100644
--- a/extras/scsi_id/scsi_id.c
+++ b/extras/scsi_id/scsi_id.c
@@ -32,144 +32,159 @@
 #include <stdarg.h>
 #include <ctype.h>
 #include <sys/stat.h>
-#include <sysfs/libsysfs.h>
-#include "scsi_id_version.h"
-#include "scsi_id.h"
 
-#ifndef SCSI_ID_VERSION
-#warning No version
-#define SCSI_ID_VERSION	"unknown"
-#endif
+#include "../../udev.h"
+#include "scsi_id.h"
+#include "scsi_id_version.h"
 
-/*
- * temporary names for mknod.
- */
-#define TMP_DIR	"/tmp"
-#define TMP_PREFIX "scsi"
+/* temporary names for mknod  */
+#define TMP_DIR		"/dev"
+#define TMP_PREFIX	"tmp-scsi"
 
-/*
- * XXX Note the 'e' (send output to stderr in all cases), and 'c' (callout)
- * options are not supported, but other code is still left in place for
- * now.
- */
-static const char short_options[] = "bd:f:gip:s:vV";
-/*
- * Just duplicate per dev options.
- */
+static const char short_options[] = "abd:f:gip:s:uvVx";
 static const char dev_short_options[] = "bgp:";
 
-char sysfs_mnt_path[SYSFS_PATH_MAX];
-
 static int all_good;
-static char *default_callout;
+static int always_info;
 static int dev_specified;
 static int sys_specified;
-static char config_file[MAX_NAME_LEN] = SCSI_ID_CONFIG_FILE;
+static char config_file[MAX_PATH_LEN] = SCSI_ID_CONFIG_FILE;
 static int display_bus_id;
-static int default_page_code;
+static enum page_code default_page_code;
 static int use_stderr;
 static int debug;
 static int hotplug_mode;
-
-void log_message (int level, const char *format, ...)
+static int reformat_serial;
+static int export;
+static char vendor_str[64];
+static char model_str[64];
+static char revision_str[16];
+static char type_str[16];
+
+#ifdef USE_LOG
+void log_message(int priority, const char *format, ...)
 {
-	va_list	args;
-
-	if (!debug && level == LOG_DEBUG)
-		return;
+	va_list args;
+	static int udev_log = -1;
 
-	va_start (args, format);
-	if (!hotplug_mode || use_stderr) {
-		vfprintf(stderr, format, args);
-	} else {
-		static int logging_init = 0;
-		static unsigned char logname[32];
-		if (!logging_init) {
-			/*
-			 * klibc does not have LOG_PID.
-			 */
-			snprintf(logname, 32, "scsi_id[%d]", getpid());
-			openlog (logname, 0, LOG_DAEMON);
-			logging_init = 1;
-		}
+	if (udev_log == -1) {
+		const char *value;
 
-		vsyslog(level, format, args);
+		value = getenv("UDEV_LOG");
+		if (value)
+			udev_log = log_priority(value);
+		else
+			udev_log = LOG_ERR;
 	}
-	va_end (args);
-	return;
-}
 
-int sysfs_get_attr(const char *devpath, const char *attr, char *value,
-		   size_t bufsize)
-{
-	char attr_path[SYSFS_PATH_MAX];
+	if (priority > udev_log)
+		return;
 
-	strncpy(attr_path, devpath, SYSFS_PATH_MAX);
-	strncat(attr_path, "/", SYSFS_PATH_MAX);
-	strncat(attr_path, attr,  SYSFS_PATH_MAX);
-	dprintf("%s\n", attr_path);
-	return sysfs_read_attribute_value(attr_path, value, SYSFS_NAME_LEN);
+	va_start(args, format);
+	vsyslog(priority, format, args);
+	va_end(args);
 }
+#endif
 
-static int get_major_minor(const char *devpath, int *maj, int *min)
+static void set_str(char *to, const char *from, size_t count)
 {
-	char dev_value[MAX_ATTR_LEN];
-
-	if (sysfs_get_attr(devpath, "dev", dev_value, MAX_ATTR_LEN)) {
-		/*
-		 * XXX This happens a lot, since sg has no dev attr.
-		 * And now sysfsutils does not set a meaningful errno
-		 * value. Someday change this back to a LOG_WARNING.
-		 * And if sysfsutils changes, check for ENOENT and handle
-		 * it separately.
-		 */
-		log_message(LOG_DEBUG, "%s: could not get dev attribute: %s\n",
-			devpath, strerror(errno));
-		return -1;
+	size_t i, j, len;
+
+	/* strip trailing whitespace */
+	len = strnlen(from, count);
+	while (len && isspace(from[len-1]))
+		len--;
+
+	/* strip leading whitespace */
+	i = 0;
+	while (isspace(from[i]) && (i < len))
+		i++;
+
+	j = 0;
+	while (i < len) {
+		/* substitute multiple whitespace */
+		if (isspace(from[i])) {
+			while (isspace(from[i]))
+				i++;
+			to[j++] = '_';
+		}
+		/* skip chars */
+		if (from[i] == '/') {
+			i++;
+			continue;
+		}
+		to[j++] = from[i++];
 	}
+	to[j] = '\0';
+}
 
-	dprintf("dev value %s", dev_value); /* dev_value has a trailing \n */
-	if (sscanf(dev_value, "%u:%u", maj, min) != 2) {
-		log_message(LOG_WARNING, "%s: invalid dev major/minor\n",
-			    devpath);
-		return -1;
+static void set_type(char *to, const char *from, size_t len)
+{
+	int type_num;
+	char *eptr;
+	char *type = "generic";
+
+	type_num = strtoul(from, &eptr, 0);
+	if (eptr != from) {
+		switch (type_num) {
+		case 0:
+			type = "disk";
+			break;
+		case 1:
+			type = "tape";
+			break;
+		case 4:
+			type = "optical";
+			break;
+		case 5:
+			type = "cd";
+			break;
+		case 7:
+			type = "optical";
+			break;
+		case 0xe:
+			type = "disk";
+			break;
+		case 0xf:
+			type = "optical";
+			break;
+		default:
+			break;
+		}
 	}
-
-	return 0;
+	strncpy(to, type, len);
+	to[len-1] = '\0';
 }
 
 static int create_tmp_dev(const char *devpath, char *tmpdev, int dev_type)
 {
-	int maj, min;
+	unsigned int maj, min;
+	const char *attr;
 
-	dprintf("(%s)\n", devpath);
+	dbg("%s", devpath);
+	attr = sysfs_attr_get_value(devpath, "dev");
+	if (attr == NULL) {
+		dbg("%s: could not get dev attribute: %s", devpath, strerror(errno));
+		return -1;
+	}
 
-	if (get_major_minor(devpath, &maj, &min))
+	dbg("dev value %s", attr);
+	if (sscanf(attr, "%u:%u", &maj, &min) != 2) {
+		err("%s: invalid dev major/minor", devpath);
 		return -1;
-	snprintf(tmpdev, MAX_NAME_LEN, "%s/%s-maj%d-min%d-%u",
-		 TMP_DIR, TMP_PREFIX, maj, min, getpid());
+	}
 
-	dprintf("tmpdev '%s'\n", tmpdev);
+	snprintf(tmpdev, MAX_PATH_LEN, "%s/%s-maj%d-min%d-%u",
+		 TMP_DIR, TMP_PREFIX, maj, min, getpid());
 
+	dbg("tmpdev '%s'", tmpdev);
 	if (mknod(tmpdev, 0600 | dev_type, makedev(maj, min))) {
-		log_message(LOG_WARNING, "mknod failed: %s\n", strerror(errno));
+		err("mknod failed: %s", strerror(errno));
 		return -1;
 	}
 	return 0;
 }
 
-static int has_sysfs_prefix(const char *path, const char *prefix)
-{
-	char match[MAX_NAME_LEN];
-
-	strncpy(match, sysfs_mnt_path, MAX_NAME_LEN);
-	strncat(match, prefix, MAX_NAME_LEN);
-	if (strncmp(path, match, strlen(match)) == 0)
-		return 1;
-	else
-		return 0;
-}
-
 /*
  * get_value:
  *
@@ -226,8 +241,8 @@ static int argc_count(char *opts)
  *
  * vendor and model can end in '\n'.
  */
-static int get_file_options(char *vendor, char *model, int *argc,
-			    char ***newargv)
+static int get_file_options(const char *vendor, const char *model,
+			    int *argc, char ***newargv)
 {
 	char *buffer;
 	FILE *fd;
@@ -238,15 +253,14 @@ static int get_file_options(char *vendor, char *model, int *argc,
 	int c;
 	int retval = 0;
 
-	dprintf("vendor='%s'; model='%s'\n", vendor, model);
+	dbg("vendor='%s'; model='%s'\n", vendor, model);
 	fd = fopen(config_file, "r");
 	if (fd == NULL) {
-		dprintf("can't open %s\n", config_file);
+		dbg("can't open %s\n", config_file);
 		if (errno == ENOENT) {
 			return 1;
 		} else {
-			log_message(LOG_WARNING, "can't open %s: %s\n",
-				config_file, strerror(errno));
+			err("can't open %s: %s", config_file, strerror(errno));
 			return -1;
 		}
 	}
@@ -258,7 +272,7 @@ static int get_file_options(char *vendor, char *model, int *argc,
 	 */
 	buffer = malloc(MAX_BUFFER_LEN);
 	if (!buffer) {
-		log_message(LOG_WARNING, "Can't allocate memory.\n");
+		err("Can't allocate memory.");
 		return -1;
 	}
 
@@ -272,29 +286,22 @@ static int get_file_options(char *vendor, char *model, int *argc,
 			break;
 		lineno++;
 		if (buf[strlen(buffer) - 1] != '\n') {
-			log_message(LOG_WARNING,
-				    "Config file line %d too long.\n", lineno);
+			info("Config file line %d too long.\n", lineno);
 			break;
 		}
 
 		while (isspace(*buf))
 			buf++;
 
+		/* blank or all whitespace line */
 		if (*buf == '\0')
-			/*
-			 * blank or all whitespace line
-			 */
 			continue;
 
+		/* comment line */
 		if (*buf == '#')
-			/*
-			 * comment line
-			 */
 			continue;
 
-#ifdef LOTS
-		dprintf("lineno %d: '%s'\n", lineno, buf);
-#endif
+		dbg("lineno %d: '%s'\n", lineno, buf);
 		str1 = strsep(&buf, "=");
 		if (str1 && strcasecmp(str1, "VENDOR") == 0) {
 			str1 = get_value(&buf);
@@ -324,22 +331,20 @@ static int get_file_options(char *vendor, char *model, int *argc,
 			}
 			options_in = str1;
 		}
-		dprintf("config file line %d:"
+		dbg("config file line %d:"
 			" vendor '%s'; model '%s'; options '%s'\n",
 			lineno, vendor_in, model_in, options_in);
 		/*
 		 * Only allow: [vendor=foo[,model=bar]]options=stuff
 		 */
 		if (!options_in || (!vendor_in && model_in)) {
-			log_message(LOG_WARNING,
-				    "Error parsing config file line %d '%s'\n",
-				    lineno, buffer);
+			info("Error parsing config file line %d '%s'", lineno, buffer);
 			retval = -1;
 			break;
 		}
 		if (vendor == NULL) {
 			if (vendor_in == NULL) {
-				dprintf("matched global option\n");
+				dbg("matched global option\n");
 				break;
 			}
 		} else if ((vendor_in && strncmp(vendor, vendor_in,
@@ -353,10 +358,10 @@ static int get_file_options(char *vendor, char *model, int *argc,
 				 * give a partial match (that is FOO
 				 * matches FOOBAR).
 				 */
-				dprintf("matched vendor/model\n");
+				dbg("matched vendor/model\n");
 				break;
 		} else {
-			dprintf("no match\n");
+			dbg("no match\n");
 		}
 	}
 
@@ -371,8 +376,7 @@ static int get_file_options(char *vendor, char *model, int *argc,
 			c = argc_count(buffer) + 2;
 			*newargv = calloc(c, sizeof(**newargv));
 			if (!*newargv) {
-				log_message(LOG_WARNING,
-					    "Can't allocate memory.\n");
+				err("Can't allocate memory.");
 				retval = -1;
 			} else {
 				*argc = c;
@@ -387,9 +391,7 @@ static int get_file_options(char *vendor, char *model, int *argc,
 					(*newargv)[c] = strsep(&buffer, " ");
 			}
 		} else {
-			/*
-			 * No matches.
-			 */
+			/* No matches  */
 			retval = 1;
 		}
 	}
@@ -412,27 +414,27 @@ static int set_options(int argc, char **argv, const char *short_opts,
 	 */
 	optind = 1;
 	while (1) {
-		option = getopt(argc, argv, short_options);
+		option = getopt(argc, argv, short_opts);
 		if (option == -1)
 			break;
 
 		if (optarg)
-			dprintf("option '%c' arg '%s'\n", option, optarg);
+			dbg("option '%c' arg '%s'\n", option, optarg);
 		else
-			dprintf("option '%c'\n", option);
+			dbg("option '%c'\n", option);
 
 		switch (option) {
+		case 'a':
+			always_info = 1;
+			break;
 		case 'b':
 			all_good = 0;
 			break;
 
-		case 'c':
-			default_callout = optarg;
-			break;
-
 		case 'd':
 			dev_specified = 1;
-			strncpy(maj_min_dev, optarg, MAX_NAME_LEN);
+			strncpy(maj_min_dev, optarg, MAX_PATH_LEN);
+			maj_min_dev[MAX_PATH_LEN-1] = '\0';
 			break;
 
 		case 'e':
@@ -440,7 +442,8 @@ static int set_options(int argc, char **argv, const char *short_opts,
 			break;
 
 		case 'f':
-			strncpy(config_file, optarg, MAX_NAME_LEN);
+			strncpy(config_file, optarg, MAX_PATH_LEN);
+			config_file[MAX_PATH_LEN-1] = '\0';
 			break;
 
 		case 'g':
@@ -453,20 +456,29 @@ static int set_options(int argc, char **argv, const char *short_opts,
 
 		case 'p':
 			if (strcmp(optarg, "0x80") == 0) {
-				default_page_code = 0x80;
+				default_page_code = PAGE_80;
 			} else if (strcmp(optarg, "0x83") == 0) {
-				default_page_code = 0x83;
+				default_page_code = PAGE_83;
+			} else if (strcmp(optarg, "pre-spc3-83") == 0) {
+				default_page_code = PAGE_83_PRE_SPC3; 
 			} else {
-				log_message(LOG_WARNING,
-					    "Unknown page code '%s'\n", optarg);
+				info("Unknown page code '%s'", optarg);
 				return -1;
 			}
 			break;
 
 		case 's':
 			sys_specified = 1;
-			strncpy(target, sysfs_mnt_path, MAX_NAME_LEN);
-			strncat(target, optarg, MAX_NAME_LEN);
+			strncpy(target, optarg, MAX_PATH_LEN);
+			target[MAX_PATH_LEN-1] = '\0';
+			break;
+
+		case 'u':
+			reformat_serial = 1;
+			break;
+
+		case 'x':
+			export = 1;
 			break;
 
 		case 'v':
@@ -474,49 +486,56 @@ static int set_options(int argc, char **argv, const char *short_opts,
 			break;
 
 		case 'V':
-			log_message(LOG_WARNING, "scsi_id version: %s\n",
-				    SCSI_ID_VERSION);
+			info("scsi_id version: %s\n", SCSI_ID_VERSION);
 			exit(0);
 			break;
 
 		default:
-			log_message(LOG_WARNING,
-				    "Unknown or bad option '%c' (0x%x)\n",
-				    option, option);
+			info("Unknown or bad option '%c' (0x%x)", option, option);
 			return -1;
 		}
 	}
 	return 0;
 }
 
-static int per_dev_options(struct sysfs_device *scsi_dev, int *good_bad,
-			   int *page_code, char *callout)
+static int per_dev_options(struct sysfs_device *dev_scsi, int *good_bad, int *page_code)
 {
 	int retval;
 	int newargc;
 	char **newargv = NULL;
-	char vendor[MAX_ATTR_LEN];
-	char model[MAX_ATTR_LEN];
+	const char *vendor, *model, *type;
 	int option;
 
 	*good_bad = all_good;
 	*page_code = default_page_code;
-	if (default_callout && (callout != default_callout))
-		strncpy(callout, default_callout, MAX_NAME_LEN);
-	else
-		callout[0] = '\0';
 
-	if (sysfs_get_attr(scsi_dev->path, "vendor", vendor, MAX_ATTR_LEN)) {
-		log_message(LOG_WARNING, "%s: cannot get vendor attribute\n",
-			    scsi_dev->name);
+	vendor = sysfs_attr_get_value(dev_scsi->devpath, "vendor");
+	if (!vendor) {
+		info("%s: cannot get vendor attribute", dev_scsi->devpath);
+		return -1;
+	}
+	set_str(vendor_str, vendor, sizeof(vendor_str)-1);
+
+	model = sysfs_attr_get_value(dev_scsi->devpath, "model");
+	if (!model) {
+		info("%s: cannot get model attribute\n", dev_scsi->devpath);
+		return -1;
+	}
+	set_str(model_str, model, sizeof(model_str)-1);
+
+	type = sysfs_attr_get_value(dev_scsi->devpath, "type");
+	if (!type) {
+		info("%s: cannot get type attribute", dev_scsi->devpath);
 		return -1;
 	}
+	set_type(type_str, type, sizeof(type_str));
 
-	if (sysfs_get_attr(scsi_dev->path, "model", model, MAX_ATTR_LEN)) {
-		log_message(LOG_WARNING, "%s: cannot get model attribute\n",
-			    scsi_dev->name);
+	type = sysfs_attr_get_value(dev_scsi->devpath, "rev");
+	if (!type) {
+		info("%s: cannot get type attribute\n", dev_scsi->devpath);
 		return -1;
 	}
+	set_str(revision_str, type, sizeof(revision_str)-1);
 
 	retval = get_file_options(vendor, model, &newargc, &newargv);
 
@@ -527,39 +546,34 @@ static int per_dev_options(struct sysfs_device *scsi_dev, int *good_bad,
 			break;
 
 		if (optarg)
-			dprintf("option '%c' arg '%s'\n", option, optarg);
+			dbg("option '%c' arg '%s'\n", option, optarg);
 		else
-			dprintf("option '%c'\n", option);
+			dbg("option '%c'\n", option);
 
 		switch (option) {
 		case 'b':
 			*good_bad = 0;
 			break;
 
-		case 'c':
-			strncpy(callout, default_callout, MAX_NAME_LEN);
-			break;
-
 		case 'g':
 			*good_bad = 1;
 			break;
 
 		case 'p':
 			if (strcmp(optarg, "0x80") == 0) {
-				*page_code = 0x80;
+				*page_code = PAGE_80;
 			} else if (strcmp(optarg, "0x83") == 0) {
-				*page_code = 0x83;
+				*page_code = PAGE_83;
+			} else if (strcmp(optarg, "pre-spc3-83") == 0) {
+				*page_code = PAGE_83_PRE_SPC3; 
 			} else {
-				log_message(LOG_WARNING,
-					    "Unknown page code '%s'\n", optarg);
+				info("Unknown page code '%s'", optarg);
 				retval = -1;
 			}
 			break;
 
 		default:
-			log_message(LOG_WARNING,
-				    "Unknown or bad option '%c' (0x%x)\n",
-				    option, option);
+			info("Unknown or bad option '%c' (0x%x)", option, option);
 			retval = -1;
 			break;
 		}
@@ -572,6 +586,31 @@ static int per_dev_options(struct sysfs_device *scsi_dev, int *good_bad,
 	return retval;
 }
 
+/*
+ * format_serial: replace to whitespaces by underscores for calling
+ * programs that use the serial for device naming (multipath, Suse
+ * naming, etc...)
+ */
+static void format_serial(char *serial)
+{
+	char *p = serial, *q;
+
+	q = p;
+	while (*p != '\0') {
+		if (isspace(*p)) {
+			if (q > serial && q[-1] != '_') {
+				*q = '_';
+				q++;
+			}
+		} else {
+			*q = *p;
+			q++;
+		}
+		p++;
+	}
+	*q = '\0';
+}
+
 /*
  * scsi_id: try to get an id, if one is found, printf it to stdout.
  * returns a value passed to exit() - 0 if printed an id, else 1. This
@@ -579,139 +618,81 @@ static int per_dev_options(struct sysfs_device *scsi_dev, int *good_bad,
  * memory etc. return 2, and return 1 for expected cases (like broken
  * device found) that do not print an id.
  */
-static int scsi_id(const char *target_path, char *maj_min_dev)
+static int scsi_id(const char *devpath, char *maj_min_dev)
 {
 	int retval;
 	int dev_type = 0;
-	char serial[MAX_SERIAL_LEN];
-	struct sysfs_class_device *class_dev; /* of target_path */
-	struct sysfs_class_device *class_dev_parent; /* for partitions */
-	struct sysfs_device *scsi_dev; /* the scsi_device */
+	char *serial, *unaligned_buf;
+	struct sysfs_device *dev;
+	struct sysfs_device *dev_scsi;
 	int good_dev;
 	int page_code;
-	char callout[MAX_NAME_LEN];
 
-	dprintf("target_path %s\n", target_path);
+	dbg("devpath %s\n", devpath);
 
-	/*
-	 * Ugly: depend on the sysfs path to tell us whether this is a
-	 * block or char device. This should probably be encoded in the
-	 * "dev" along with the major/minor.
-	 */
-	if (has_sysfs_prefix(target_path, "/block")) {
-		dev_type = S_IFBLK;
-	} else if (has_sysfs_prefix(target_path, "/class")) {
-		dev_type = S_IFCHR;
-	} else {
-		if (!hotplug_mode) {
-			log_message(LOG_WARNING,
-				    "Non block or class device '%s'\n",
-				    target_path);
-			return 1;
-		} else {
-			/*
-			 * Expected in some cases.
-			 */
-			dprintf("Non block or class device\n");
-			return 0;
-		}
-	}
-
-	class_dev = sysfs_open_class_device_path(target_path);
-	if (!class_dev) {
-		log_message(LOG_WARNING, "open class %s failed: %s\n",
-			    target_path, strerror(errno));
+	dev = sysfs_device_get(devpath);
+	if (dev == NULL) {
+		err("unable to access '%s'", devpath);
 		return 1;
 	}
-	class_dev_parent = sysfs_get_classdev_parent(class_dev);
-	dprintf("class_dev 0x%p; class_dev_parent 0x%p\n", class_dev,
-		class_dev_parent);
-	if (class_dev_parent) {
-		scsi_dev = sysfs_get_classdev_device(class_dev_parent);
-	} else {
-		scsi_dev = sysfs_get_classdev_device(class_dev);
-	}
 
-	/*
-	 * The close of scsi_dev will close class_dev or class_dev_parent.
-	 */
+	if (strcmp(dev->subsystem, "block") == 0)
+		dev_type = S_IFBLK;
+	else
+		dev_type = S_IFCHR;
 
-	/*
-	 * We assume we are called after the device is completely ready,
-	 * so we don't have to loop here like udev. (And we are usually
-	 * called via udev.)
-	 */
-	if (!scsi_dev) {
-		/*
-		 * errno is not set if we can't find the device link, so
-		 * don't print it out here.
-		 */
-		log_message(LOG_WARNING, "Cannot find sysfs device associated with %s\n",
-			    target_path);
+	/* get scsi parent device */
+	dev_scsi = sysfs_device_get_parent_with_subsystem(dev, "scsi");
+	if (dev_scsi == NULL) {
+		err("unable to access parent device of '%s'", devpath);
 		return 1;
 	}
 
-
-	/*
-	 * Allow only scsi devices.
-	 *
-	 * Other block devices can support SG IO, but only ide-cd does, so
-	 * for now, don't bother with anything else.
-	 */
-	if (strcmp(scsi_dev->bus, "scsi") != 0) {
-		if (hotplug_mode)
-			/*
-			 * Expected in some cases.
-			 */
-			dprintf("%s is not a scsi device\n", target_path);
-		else
-			log_message(LOG_WARNING, "%s is not a scsi device\n",
-				    target_path);
+	/* mknod a temp dev to communicate with the device */
+	if (!dev_specified && create_tmp_dev(dev->devpath, maj_min_dev, dev_type)) {
+		dbg("create_tmp_dev failed\n");
 		return 1;
 	}
 
-	/*
-	 * mknod a temp dev to communicate with the device.
-	 *
-	 * XXX pass down class_dev or class_dev_parent.
-	 */
-	if (!dev_specified && create_tmp_dev(target_path, maj_min_dev,
-					     dev_type)) {
-		dprintf("create_tmp_dev failed\n");
-		return 1;
-	}
+	/* get per device (vendor + model) options from the config file */
+	retval = per_dev_options(dev_scsi, &good_dev, &page_code);
+	dbg("per dev options: good %d; page code 0x%x", good_dev, page_code);
 
-	/*
-	 * Get any per device (vendor + model) options from the config
-	 * file.
-	 */
-	retval = per_dev_options(scsi_dev, &good_dev, &page_code, callout);
-	dprintf("per dev options: good %d; page code 0x%x; callout '%s'\n",
-		good_dev, page_code, callout);
+#define ALIGN   512
+	unaligned_buf = malloc(MAX_SERIAL_LEN + ALIGN);
+	serial = (char*) (((unsigned long) unaligned_buf + (ALIGN - 1))
+			  & ~(ALIGN - 1));
+	dbg("buffer unaligned 0x%p; aligned 0x%p\n", unaligned_buf, serial);
+#undef ALIGN
 
 	if (!good_dev) {
 		retval = 1;
-	} else if (callout[0] != '\0') {
-		/*
-		 * XXX Disabled for now ('c' is not in any options[]).
-		 */
-		retval = 1;
-	} else if (scsi_get_serial(scsi_dev, maj_min_dev, page_code,
+	} else if (scsi_get_serial(dev_scsi, maj_min_dev, page_code,
 				   serial, MAX_SERIAL_LEN)) {
-		retval = 1;
+		retval = always_info?0:1;
 	} else {
 		retval = 0;
 	}
 	if (!retval) {
-		if (display_bus_id)
-			printf("%s: ", scsi_dev->name);
-		printf("%s", serial);
-		if (!hotplug_mode)
-			printf("\n");
-		dprintf("%s\n", serial);
+		if (export) {
+			static char serial_str[64];
+			printf("ID_VENDOR=%s\n", vendor_str);
+			printf("ID_MODEL=%s\n", model_str);
+			printf("ID_REVISION=%s\n", revision_str);
+			set_str(serial_str, serial, sizeof(serial_str));
+			printf("ID_SERIAL=%s\n", serial_str);
+			printf("ID_TYPE=%s\n", type_str);
+			printf("ID_BUS=scsi\n");
+		} else {
+			if (reformat_serial)
+				format_serial(serial);
+			if (display_bus_id)
+				printf("%s: ", dev_scsi->kernel_name);
+			printf("%s\n", serial);
+		}
+		dbg("%s\n", serial);
 		retval = 0;
 	}
-	sysfs_close_device(scsi_dev);
 
 	if (!dev_specified)
 		unlink(maj_min_dev);
@@ -721,71 +702,68 @@ static int scsi_id(const char *target_path, char *maj_min_dev)
 
 int main(int argc, char **argv)
 {
-	int retval;
-	char *devpath;
-	char target_path[MAX_NAME_LEN];
-	char maj_min_dev[MAX_NAME_LEN];
+	int retval = 0;
+	char devpath[MAX_PATH_LEN];
+	char maj_min_dev[MAX_PATH_LEN];
 	int newargc;
+	const char *env;
 	char **newargv;
 
-	if (getenv("DEBUG"))
-		debug++;
+	logging_init("scsi_id");
+	sysfs_init();
+	dbg("argc is %d\n", argc);
 
-	if ((argc == 2) && (argv[1][0] != '-')) {
-		hotplug_mode = 1;
-		dprintf("hotplug assumed\n");
-	}
+	/* sysfs path can be overridden for testing */
+	env = getenv("SYSFS_PATH");
+	if (env) {
+		strncpy(sysfs_path, env, sizeof(sysfs_path));
+		sysfs_path[sizeof(sysfs_path)-1] = '\0';
+	} else
+		strcpy(sysfs_path, "/sys");
 
-	dprintf("argc is %d\n", argc);
-	if (sysfs_get_mnt_path(sysfs_mnt_path, MAX_NAME_LEN)) {
-		log_message(LOG_WARNING, "sysfs_get_mnt_path failed: %s\n",
-			strerror(errno));
-		exit(1);
-	}
-
-	if (hotplug_mode) {
-		/*
-		 * There is a kernel race creating attributes, if called
-		 * directly, uncomment the sleep.
-		 */
-		/* sleep(1); */
-
-		devpath = getenv("DEVPATH");
-		if (!devpath) {
-			log_message(LOG_WARNING, "DEVPATH is not set\n");
-			exit(1);
-		}
+	env = getenv("DEVPATH");
+	if (env) {
+		hotplug_mode = 1;
 		sys_specified = 1;
-
-		strncpy(target_path, sysfs_mnt_path, MAX_NAME_LEN);
-		strncat(target_path, devpath, MAX_NAME_LEN);
+		strncpy(devpath, env, MAX_PATH_LEN);
+		devpath[sizeof(devpath)-1] = '\0';
 	}
 
 	/*
-	 * Override any command line options set via the config file. This
-	 * is the only way to set options when in hotplug mode.
+	 * Get config file options.
 	 */
 	newargv = NULL;
 	retval = get_file_options(NULL, NULL, &newargc, &newargv);
 	if (retval < 0) {
-		exit(1);
-	} else if (newargv && (retval == 0)) {
-		if (set_options(newargc, newargv, short_options, target_path,
-				maj_min_dev) < 0)
-			exit(1);
+		retval = 1;
+		goto exit;
+	}
+	if (newargv && (retval == 0)) {
+		if (set_options(newargc, newargv, short_options, devpath,
+				maj_min_dev) < 0) {
+			retval = 2;
+			goto exit;
+		}
 		free(newargv);
 	}
-	if (!hotplug_mode) {
-		if (set_options(argc, argv, short_options, target_path,
-				maj_min_dev) < 0)
+
+	/*
+	 * Get command line options (overriding any config file or DEVPATH
+	 * settings).
+	 */
+	if (set_options(argc, argv, short_options, devpath, maj_min_dev) < 0)
 		exit(1);
-	}
 
 	if (!sys_specified) {
-		log_message(LOG_WARNING, "-s must be specified\n");
-		exit(1);
+		info("-s must be specified\n");
+		retval = 1;
+		goto exit;
 	}
 
-	retval = scsi_id(target_path, maj_min_dev);
-	exit(retval);
+	retval = scsi_id(devpath, maj_min_dev);
+
+exit:
+	sysfs_cleanup();
+	logging_close();
+	return retval;
 }