[PATCH] more udev-016/extras/multipath

incremental to udev-016/extras/multipath-0.0.16.3,

        * add a GROUP_BY_SERIAL flag. This should be useful for
          controlers that activate their spare paths on simple IO
          submition with a penalty. The StorageWorks HW defaults to
          this mode, even if the MULTIBUS mode is OK.
        * remove unused sg_err.c
        * big restructuring : split devinfo.c from main.c. Export :
                * void basename (char *, char *);
                * int get_serial (int, char *);
                * int get_lun_strings (char *, char *, char *, char *);
                * int get_evpd_wwid(char *, char *);
                * long get_disk_size (char *);
          Now we see clearly what is expected from an external package
          like scsi_id.
        * stop passing struct env as param

7 files changed, 313 insertions, 1387 deletions

diff --git a/extras/multipath/ChangeLog b/extras/multipath/ChangeLog
index 2cc492a192..31f6c48f69 100644
--- a/extras/multipath/ChangeLog
+++ b/extras/multipath/ChangeLog
@@ -1,4 +1,16 @@
 2004-02-04 multipath-016
+	* add a GROUP_BY_SERIAL flag. This should be useful for
+	  controlers that activate they spare paths on simple IO
+	  submition with a penalty. The StorageWorks HW defaults to
+	  this mode, even if the MULTIBUS mode is OK.
+	* remove unused sg_err.c
+	* big restructuring : split devinfo.c from main.c. Export :
+		* void basename (char *, char *);
+		* int get_serial (int, char *);
+		* int get_lun_strings (char *, char *, char *, char *);
+		* int get_evpd_wwid(char *, char *);
+		* long get_disk_size (char *);
+	* stop passing struct env as param
 	* add devmap_name proggy for udev to name devmaps as per their
 	  internal DM name and not only by their sysfs enum name (dm-*)
 	  The corresponding udev.rules line is :
diff --git a/extras/multipath/Makefile b/extras/multipath/Makefile
index c039e2a19f..eeec25b893 100644
--- a/extras/multipath/Makefile
+++ b/extras/multipath/Makefile
@@ -18,7 +18,7 @@ CFLAGS = -pipe -g -O2 -Wall -Wunused -Wstrict-prototypes -nostdinc \
          -I$(klibcdir)/klibc/include -I$(klibcdir)/klibc/include/bits32 \
          -I$(GCCINCDIR) -I$(KERNEL_DIR)/include -I$(sysfsdir) -I.
 
-OBJS = main.o
+OBJS = devinfo.o main.o
 CRT0 = ../../klibc/klibc/crt0.o
 LIB = ../../klibc/klibc/libc.a
 LIBGCC := $(shell $(CC) -print-libgcc-file-name )
@@ -67,4 +67,4 @@ uninstall:
 	rm $(bindir)/devmap_name
 
 # Code dependencies
-main.o: main.c main.h sg_include.h
+main.o: main.c main.h sg_include.h devinfo.h
diff --git a/extras/multipath/devinfo.c b/extras/multipath/devinfo.c
new file mode 100644
index 0000000000..a6b089f517
--- /dev/null
+++ b/extras/multipath/devinfo.c
@@ -0,0 +1,204 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <libsysfs.h>
+#include "devinfo.h"
+#include "sg_include.h"
+
+#define FILE_NAME_SIZE 255
+
+void
+basename(char * str1, char * str2)
+{
+        char *p = str1 + (strlen(str1) - 1);
+ 
+        while (*--p != '/')
+                continue;
+        strcpy(str2, ++p);
+}
+
+static int
+do_inq(int sg_fd, int cmddt, int evpd, unsigned int pg_op,
+       void *resp, int mx_resp_len, int noisy)
+{
+        unsigned char inqCmdBlk[INQUIRY_CMDLEN] =
+            { INQUIRY_CMD, 0, 0, 0, 0, 0 };
+        unsigned char sense_b[SENSE_BUFF_LEN];
+        struct sg_io_hdr io_hdr;
+                                                                                                                 
+        if (cmddt)
+                inqCmdBlk[1] |= 2;
+        if (evpd)
+                inqCmdBlk[1] |= 1;
+        inqCmdBlk[2] = (unsigned char) pg_op;
+        inqCmdBlk[4] = (unsigned char) mx_resp_len;
+        memset(&io_hdr, 0, sizeof (struct sg_io_hdr));
+        io_hdr.interface_id = 'S';
+        io_hdr.cmd_len = sizeof (inqCmdBlk);
+        io_hdr.mx_sb_len = sizeof (sense_b);
+        io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+        io_hdr.dxfer_len = mx_resp_len;
+        io_hdr.dxferp = resp;
+        io_hdr.cmdp = inqCmdBlk;
+        io_hdr.sbp = sense_b;
+        io_hdr.timeout = DEF_TIMEOUT;
+ 
+        if (ioctl(sg_fd, SG_IO, &io_hdr) < 0) {
+                perror("SG_IO (inquiry) error");
+                return -1;
+        }
+ 
+        /* treat SG_ERR here to get rid of sg_err.[ch] */
+        io_hdr.status &= 0x7e;
+        if ((0 == io_hdr.status) && (0 == io_hdr.host_status) &&
+            (0 == io_hdr.driver_status))
+                return 0;
+        if ((SCSI_CHECK_CONDITION == io_hdr.status) ||
+            (SCSI_COMMAND_TERMINATED == io_hdr.status) ||
+            (SG_ERR_DRIVER_SENSE == (0xf & io_hdr.driver_status))) {
+                if (io_hdr.sbp && (io_hdr.sb_len_wr > 2)) {
+                        int sense_key;
+                        unsigned char * sense_buffer = io_hdr.sbp;
+                        if (sense_buffer[0] & 0x2)
+                                sense_key = sense_buffer[1] & 0xf;
+                        else
+                                sense_key = sense_buffer[2] & 0xf;
+                        if(RECOVERED_ERROR == sense_key)
+                                return 0;
+                }
+        }
+        return -1;
+}
+
+int
+get_serial (char * str, char * devname)
+{
+	int fd;
+        int len;
+        char buff[MX_ALLOC_LEN + 1];
+
+	if ((fd = open(devname, O_RDONLY)) < 0)
+                return 0;
+
+	if (0 == do_inq(fd, 0, 1, 0x80, buff, MX_ALLOC_LEN, 0)) {
+		len = buff[3];
+		if (len > 0) {
+			memcpy(str, buff + 4, len);
+			buff[len] = '\0';
+		}
+		close(fd);
+		return 1;
+	}
+	close(fd);
+        return 0;
+}
+
+int
+get_lun_strings(char * vendor_id, char * product_id, char * rev, char * devname)
+{
+        int fd;
+        char buff[36];
+        char attr_path[FILE_NAME_SIZE];
+	char sysfs_path[FILE_NAME_SIZE];
+        char basedev[FILE_NAME_SIZE];
+                                                                                                                 
+	if (0 == sysfs_get_mnt_path(sysfs_path, FILE_NAME_SIZE)) {
+                /* sysfs style */
+                basename(devname, basedev);
+ 
+                sprintf(attr_path, "%s/block/%s/device/vendor",
+                        sysfs_path, basedev);
+                if (0 > sysfs_read_attribute_value(attr_path,
+                    vendor_id, 8)) return 0;
+ 
+                sprintf(attr_path, "%s/block/%s/device/model",
+                        sysfs_path, basedev);
+                if (0 > sysfs_read_attribute_value(attr_path,
+                    product_id, 16)) return 0;
+ 
+                sprintf(attr_path, "%s/block/%s/device/rev",
+                        sysfs_path, basedev);
+                if (0 > sysfs_read_attribute_value(attr_path,
+                    rev, 4)) return 0;
+        } else {
+                /* ioctl style */
+                if ((fd = open(devname, O_RDONLY)) < 0)
+                        return 0;
+                if (0 != do_inq(fd, 0, 0, 0, buff, 36, 1))
+                        return 0;
+                memcpy(vendor_id, &buff[8], 8);
+                memcpy(product_id, &buff[16], 16);
+                memcpy(rev, &buff[32], 4);
+                close(fd);
+                return 1;
+        }
+        return 0;
+}
+
+static void
+sprint_wwid(char * buff, const char * str)
+{
+        int i;
+        const char *p;
+        char *cursor;
+        unsigned char c;
+                                                                                                                 
+        p = str;
+        cursor = buff;
+        for (i = 0; i <= WWID_SIZE / 2 - 1; i++) {
+                c = *p++;
+                sprintf(cursor, "%.2x", (int) (unsigned char) c);
+                cursor += 2;
+        }
+        buff[WWID_SIZE - 1] = '\0';
+}
+                                                                                                                 
+/* get EVPD page 0x83 off 8 */
+/* tested ok with StorageWorks */
+int
+get_evpd_wwid(char * devname, char * wwid)
+{
+        int fd;
+        char buff[64];
+                                                                                                                 
+        if ((fd = open(devname, O_RDONLY)) < 0)
+                        return 0;
+                                                                                                                 
+        if (0 == do_inq(fd, 0, 1, 0x83, buff, sizeof (buff), 1)) {
+                sprint_wwid(wwid, &buff[8]);
+                close(fd);
+                return 1; /* success */
+        }
+        close(fd);
+        return 0; /* not good */
+}
+
+long
+get_disk_size (char * devname) {
+        long size;
+        int fd;
+        char attr_path[FILE_NAME_SIZE];
+        char sysfs_path[FILE_NAME_SIZE];
+        char buff[FILE_NAME_SIZE];
+        char basedev[FILE_NAME_SIZE];
+                                                                                                                 
+        if (0 == sysfs_get_mnt_path(sysfs_path, FILE_NAME_SIZE)) {
+                basename(devname, basedev);
+                sprintf(attr_path, "%s/block/%s/size",
+                        sysfs_path, basedev);
+                if (0 > sysfs_read_attribute_value(attr_path, buff,
+                                         FILE_NAME_SIZE * sizeof(char)))
+                        return -1;
+                size = atoi(buff);
+                return size;
+        } else {
+                if ((fd = open(devname, O_RDONLY)) < 0)
+                        return -1;
+                if(!ioctl(fd, BLKGETSIZE, &size))
+                        return size;
+        }
+        return -1;
+}
+
diff --git a/extras/multipath/devinfo.h b/extras/multipath/devinfo.h
new file mode 100644
index 0000000000..53f2473027
--- /dev/null
+++ b/extras/multipath/devinfo.h
@@ -0,0 +1,19 @@
+#define INQUIRY_CMDLEN  6
+#define INQUIRY_CMD     0x12
+#define SENSE_BUFF_LEN  32
+#define DEF_TIMEOUT     60000
+#define RECOVERED_ERROR 0x01
+#define MX_ALLOC_LEN    255
+#define WWID_SIZE       33
+#define BLKGETSIZE      _IO(0x12,96)
+
+/* exerpt from "sg_err.h" */
+#define SCSI_CHECK_CONDITION    0x2
+#define SCSI_COMMAND_TERMINATED 0x22
+#define SG_ERR_DRIVER_SENSE     0x08
+
+void basename (char *, char *);
+int get_serial (char *, char *);
+int get_lun_strings (char *, char *, char *, char *);
+int get_evpd_wwid(char *, char *);
+long get_disk_size (char *);
diff --git a/extras/multipath/main.c b/extras/multipath/main.c
index d4dd89a305..6ea9a064e1 100644
--- a/extras/multipath/main.c
+++ b/extras/multipath/main.c
@@ -28,150 +28,7 @@
 #include <libsysfs.h>
 #include "libdevmapper/libdevmapper.h"
 #include "main.h"
-
-static int
-do_inq(int sg_fd, int cmddt, int evpd, unsigned int pg_op,
-       void *resp, int mx_resp_len, int noisy)
-{
-	unsigned char inqCmdBlk[INQUIRY_CMDLEN] =
-	    { INQUIRY_CMD, 0, 0, 0, 0, 0 };
-	unsigned char sense_b[SENSE_BUFF_LEN];
-	struct sg_io_hdr io_hdr;
-
-	if (cmddt)
-		inqCmdBlk[1] |= 2;
-	if (evpd)
-		inqCmdBlk[1] |= 1;
-	inqCmdBlk[2] = (unsigned char) pg_op;
-	inqCmdBlk[4] = (unsigned char) mx_resp_len;
-	memset(&io_hdr, 0, sizeof (struct sg_io_hdr));
-	io_hdr.interface_id = 'S';
-	io_hdr.cmd_len = sizeof (inqCmdBlk);
-	io_hdr.mx_sb_len = sizeof (sense_b);
-	io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
-	io_hdr.dxfer_len = mx_resp_len;
-	io_hdr.dxferp = resp;
-	io_hdr.cmdp = inqCmdBlk;
-	io_hdr.sbp = sense_b;
-	io_hdr.timeout = DEF_TIMEOUT;
-
-	if (ioctl(sg_fd, SG_IO, &io_hdr) < 0) {
-		perror("SG_IO (inquiry) error");
-		return -1;
-	}
-
-	/* treat SG_ERR here to get rid of sg_err.[ch] */
-	io_hdr.status &= 0x7e;
-	if ((0 == io_hdr.status) && (0 == io_hdr.host_status) &&
-	    (0 == io_hdr.driver_status))
-		return 0;
-	if ((SCSI_CHECK_CONDITION == io_hdr.status) ||
-	    (SCSI_COMMAND_TERMINATED == io_hdr.status) ||
-	    (SG_ERR_DRIVER_SENSE == (0xf & io_hdr.driver_status))) {
-		if (io_hdr.sbp && (io_hdr.sb_len_wr > 2)) {
-			int sense_key;
-			unsigned char * sense_buffer = io_hdr.sbp;
-			if (sense_buffer[0] & 0x2)
-				sense_key = sense_buffer[1] & 0xf;
-			else
-				sense_key = sense_buffer[2] & 0xf;
-			if(RECOVERED_ERROR == sense_key)
-				return 0;
-		}
-	}
-	return -1;
-}
-
-static void
-sprint_wwid(char * buff, const char * str)
-{
-	int i;
-	const char *p;
-	char *cursor;
-	unsigned char c;
-
-	p = str;
-	cursor = buff;
-	for (i = 0; i <= WWID_SIZE / 2 - 1; i++) {
-		c = *p++;
-		sprintf(cursor, "%.2x", (int) (unsigned char) c);
-		cursor += 2;
-	}
-	buff[WWID_SIZE - 1] = '\0';
-}
-
-static void
-basename(char * str1, char * str2)
-{
-	char *p = str1 + (strlen(str1) - 1);
-
-	while (*--p != '/')
-		continue;
-	strcpy(str2, ++p);
-}
-
-static int
-get_lun_strings(struct env * conf, struct path * mypath)
-{
-	int fd;
-	char buff[36];
-	char attr_path[FILE_NAME_SIZE];
-	char basedev[FILE_NAME_SIZE];
-
-	if(conf->with_sysfs) {
-		/* sysfs style */
-		basename(mypath->sg_dev, basedev);
-
-		sprintf(attr_path, "%s/block/%s/device/vendor",
-                        conf->sysfs_path, basedev);
-                if (0 > sysfs_read_attribute_value(attr_path,
-		    mypath->vendor_id, 8)) return 0;
-
-		sprintf(attr_path, "%s/block/%s/device/model",
-                        conf->sysfs_path, basedev);
-                if (0 > sysfs_read_attribute_value(attr_path,
-		    mypath->product_id, 16)) return 0;
-
-		sprintf(attr_path, "%s/block/%s/device/rev",
-                        conf->sysfs_path, basedev);
-                if (0 > sysfs_read_attribute_value(attr_path,
-		    mypath->rev, 4)) return 0;
-	} else {
-		/* ioctl style */
-		if ((fd = open(mypath->sg_dev, O_RDONLY)) < 0)
-			return 0;
-		if (0 != do_inq(fd, 0, 0, 0, buff, 36, 1))
-			return 0;
-		memcpy(mypath->vendor_id, &buff[8], 8);
-		memcpy(mypath->product_id, &buff[16], 16);
-		memcpy(mypath->rev, &buff[32], 4);
-		close(fd);
-		return 1;
-	}
-	return 0;
-}
-
-/* hardware vendor specifics : add support for new models below */
-
-/* this one get EVPD page 0x83 off 8 */
-/* tested ok with StorageWorks */
-static int
-get_evpd_wwid(struct path * mypath)
-{
-	int fd;
-	char buff[64];
-
-	if ((fd = open(mypath->sg_dev, O_RDONLY)) < 0)
-                        return 0;
-
-	if (0 == do_inq(fd, 0, 1, 0x83, buff, sizeof (buff), 1)) {
-		sprint_wwid(mypath->wwid, &buff[8]);
-		close(fd);
-		return 1; /* success */
-	}
-	close(fd);
-	return 0; /* not good */
-}
+#include "devinfo.h"
 
 /* White list switch */
 static int
@@ -182,13 +39,13 @@ get_unique_id(struct path * mypath)
 		char * vendor;
 		char * product;
 		int iopolicy;
-		int (*getuid) (struct path *);
+		int (*getuid) (char *, char *);
 	} wlist[] = {
-		{"COMPAQ  ", "HSV110 (C)COMPAQ", MULTIBUS, &get_evpd_wwid},
-		{"COMPAQ  ", "MSA1000         ", MULTIBUS, &get_evpd_wwid},
-		{"COMPAQ  ", "MSA1000 VOLUME  ", MULTIBUS, &get_evpd_wwid},
-		{"DEC     ", "HSG80           ", MULTIBUS, &get_evpd_wwid},
-		{"HP      ", "HSV100          ", MULTIBUS, &get_evpd_wwid},
+		{"COMPAQ  ", "HSV110 (C)COMPAQ", GROUP_BY_SERIAL, &get_evpd_wwid},
+		{"COMPAQ  ", "MSA1000         ", GROUP_BY_SERIAL, &get_evpd_wwid},
+		{"COMPAQ  ", "MSA1000 VOLUME  ", GROUP_BY_SERIAL, &get_evpd_wwid},
+		{"DEC     ", "HSG80           ", GROUP_BY_SERIAL, &get_evpd_wwid},
+		{"HP      ", "HSV100          ", GROUP_BY_SERIAL, &get_evpd_wwid},
 		{"HP      ", "A6189A          ", MULTIBUS, &get_evpd_wwid},
 		{"HP      ", "OPEN-           ", MULTIBUS, &get_evpd_wwid},
 		{"DDN     ", "SAN DataDirector", MULTIBUS, &get_evpd_wwid},
@@ -208,7 +65,7 @@ get_unique_id(struct path * mypath)
 		if (strncmp(mypath->vendor_id, wlist[i].vendor, 8) == 0 &&
 		    strncmp(mypath->product_id, wlist[i].product, 16) == 0) {
 			mypath->iopolicy = wlist[i].iopolicy;
-			if (!wlist[i].getuid(mypath))
+			if (!wlist[i].getuid(mypath->sg_dev, mypath->wwid))
 				return 0;
 		}
 	}
@@ -269,7 +126,11 @@ get_all_paths_sysfs(struct env * conf, struct path * all_paths)
 		basename(conf->hotplugdev, buff);
 		sprintf(curpath.sg_dev, "/dev/%s", buff);
 
-		get_lun_strings(conf, &curpath);
+		get_lun_strings(curpath.vendor_id,
+				curpath.product_id,
+				curpath.rev,
+				curpath.sg_dev);
+		get_serial(curpath.serial, curpath.sg_dev);
 		if (!get_unique_id(&curpath))
 			return 0;
 		strcpy(refwwid, curpath.wwid);
@@ -301,7 +162,11 @@ get_all_paths_sysfs(struct env * conf, struct path * all_paths)
 		basename(devp->path, buff);
 		sprintf(curpath.sg_dev, "/dev/%s", buff);
 
-		get_lun_strings(conf, &curpath);
+		get_lun_strings(curpath.vendor_id,
+				curpath.product_id,
+				curpath.rev,
+				curpath.sg_dev);
+		get_serial(curpath.serial, curpath.sg_dev);
 		if(!get_unique_id(&curpath)) {
 			memset(&curpath, 0, sizeof(path));
 			continue;
@@ -349,7 +214,11 @@ get_all_paths_nosysfs(struct env * conf, struct path * all_paths,
 		strncat(file_name, buff, FILE_NAME_SIZE);
 		strcpy(all_paths[k].sg_dev, file_name);
 
-		get_lun_strings(conf, &all_paths[k]);
+		get_lun_strings(all_paths[k].vendor_id,
+				all_paths[k].product_id,
+				all_paths[k].rev,
+				all_paths[k].sg_dev);
+		get_serial(all_paths[k].serial, all_paths[k].sg_dev);
 		if (!get_unique_id(&all_paths[k]))
 			continue;
 
@@ -484,32 +353,6 @@ print_all_mp(struct path * all_paths, struct multipath * mp, int nmp)
 	}
 }
 
-static long
-get_disk_size (struct env * conf, char * dev) {
-	long size;
-	int fd;
-	char attr_path[FILE_NAME_SIZE];
-	char buff[FILE_NAME_SIZE];
-	char basedev[FILE_NAME_SIZE];
-
-	if(conf->with_sysfs) {
-		basename(dev, basedev);
-		sprintf(attr_path, "%s/block/%s/size",
-			conf->sysfs_path, basedev);
-		if (0 > sysfs_read_attribute_value(attr_path, buff,
-					 FILE_NAME_SIZE * sizeof(char)))
-			return -1;
-		size = atoi(buff);
-		return size;
-	} else {
-		if ((fd = open(dev, O_RDONLY)) < 0)
-			return -1;
-		if(!ioctl(fd, BLKGETSIZE, &size))
-			return size;
-	}
-	return -1;
-}
-
 static int
 coalesce_paths(struct env * conf, struct multipath * mp,
 	       struct path * all_paths)
@@ -528,7 +371,7 @@ coalesce_paths(struct env * conf, struct multipath * mp,
 		if (memcmp(empty_buff, all_paths[k].wwid, WWID_SIZE) == 0)
 			continue;
 
-		/* 2. mp with this uid already instanciated */
+		/* 2. if mp with this uid already instanciated */
 		for (i = 0; i <= nmp; i++) {
 			if (0 == strcmp(mp[i].wwid, all_paths[k].wwid))
 				already_done = 1;
@@ -545,7 +388,7 @@ coalesce_paths(struct env * conf, struct multipath * mp,
 		PINDEX(nmp,np) = k;
 
 		if (mp[nmp].size == 0)
-			mp[nmp].size = get_disk_size(conf, all_paths[k].dev);
+			mp[nmp].size = get_disk_size(all_paths[k].dev);
 
 		for (i = k + 1; i < conf->max_devs; i++) {
 			if (0 == strcmp(all_paths[k].wwid, all_paths[i].wwid)) {
@@ -558,6 +401,49 @@ coalesce_paths(struct env * conf, struct multipath * mp,
 	return nmp;
 }
 
+static void
+group_by_serial(struct multipath * mp, struct path * all_paths, char * str) {
+	int path_count, pg_count = 0;
+	int i, k;
+	int * bitmap;
+	char path_buff[FILE_NAME_SIZE];
+	char pg_buff[FILE_NAME_SIZE];
+	char * path_buff_p = &path_buff[0];
+	char * pg_buff_p = &pg_buff[0];
+
+	/* init the bitmap */
+	bitmap = malloc((mp->npaths + 1) * sizeof(int));
+	memset(bitmap, 0, (mp->npaths + 1) * sizeof(int));
+
+	for (i = 0; i <= mp->npaths; i++) {
+		if (bitmap[i])
+			continue;
+
+		/* here, we really got a new pg */
+		pg_count++;
+		path_count = 1;
+		memset(&path_buff, 0, FILE_NAME_SIZE * sizeof(char));
+		path_buff_p = &path_buff[0];
+
+		path_buff_p += sprintf(path_buff_p, " %s", all_paths[mp->pindex[i]].dev);
+		bitmap[i] = 1;
+
+		for (k = i + 1; k <= mp->npaths; k++) {
+			if (bitmap[k])
+				continue;
+			if (0 == strcmp(all_paths[mp->pindex[i]].serial,
+					all_paths[mp->pindex[k]].serial)) {
+				path_buff_p += sprintf(path_buff_p, " %s", all_paths[mp->pindex[k]].dev);
+				bitmap[k] = 1;
+				path_count++;
+			}
+		}
+		pg_buff_p += sprintf(pg_buff_p, " 1 round-robin %i 0%s",
+				     path_count, path_buff);
+	}
+	sprintf(str, " %i%s", pg_count, pg_buff);
+}
+
 static int
 dm_simplecmd(int task, const char *name) {
 	int r = 0;
@@ -651,6 +537,11 @@ setup_map(struct env * conf, struct path * all_paths,
 		}
 	}
 
+	if (all_paths[PINDEX(index,0)].iopolicy == GROUP_BY_SERIAL &&
+	    !conf->forcedfailover ) {
+		group_by_serial(&mp[index], all_paths, params_p);
+	}
+
 	if (mp[index].size < 0)
 		return 0;
 
diff --git a/extras/multipath/main.h b/extras/multipath/main.h
index 3941c32e7c..731c55e41f 100644
--- a/extras/multipath/main.h
+++ b/extras/multipath/main.h
@@ -28,29 +28,25 @@
 #define SG_ERR_DRIVER_SENSE     0x08
 
 /* exerpt from "scsi.h" */
-#define RECOVERED_ERROR     0x01
 #define SCSI_IOCTL_GET_IDLUN            0x5382
 #define SCSI_IOCTL_GET_BUS_NUMBER       0x5386
 
 /* global defs */
 #define WWID_SIZE	33
+#define SERIAL_SIZE	14
 #define MAX_DEVS	128
 #define MAX_MP		MAX_DEVS / 2
 #define MAX_MP_PATHS	MAX_DEVS / 4
 #define FILE_NAME_SIZE	256
-#define INQUIRY_CMDLEN	6
-#define INQUIRY_CMD	0x12
-#define SENSE_BUFF_LEN	32
 #define DEF_TIMEOUT	60000
 #define EBUFF_SZ	256
 #define TUR_CMD_LEN	6
-#define MX_ALLOC_LEN	255
-#define BLKGETSIZE      _IO(0x12,96)
 #define DM_TARGET	"multipath"
 
 /* Storage controlers cpabilities */
 #define FAILOVER	0
 #define MULTIBUS	1
+#define GROUP_BY_SERIAL	2
 
 #define PINDEX(x,y)	mp[(x)].pindex[(y)]
 
@@ -88,6 +84,7 @@ struct path {
 	char vendor_id[8];
 	char product_id[16];
 	char rev[4];
+	char serial[SERIAL_SIZE];
 	int iopolicy;
 };
 
diff --git a/extras/multipath/sg_err.c b/extras/multipath/sg_err.c
deleted file mode 100644
index 8a332cd8c6..0000000000
--- a/extras/multipath/sg_err.c
+++ /dev/null
@@ -1,1197 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "sg_include.h"
-#include "sg_err.h"
-
-
-/* This file is a huge cut, paste and hack from linux/drivers/scsi/constant.c
-*  which I guess was written by:
-*         Copyright (C) 1993, 1994, 1995 Eric Youngdale
-
-* The rest of this is:
-*  Copyright (C) 1999 - 2003 D. Gilbert
-*
-*  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, or (at your option)
-*  any later version.
-*
-*  ASCII values for a number of symbolic constants, printing functions, etc.
-*
-*  Some of the tables have been updated for SCSI 2.
-*  Additions for SCSI 3+ (SPC-3 T10/1416-D Rev 12 18 March 2003)
-*
-*  Version 0.91 (20030529)
-*      sense key specific field (bytes 15-17) decoding [Trent Piepho]
-*/
-
-#define OUTP stderr
-
-static const unsigned char scsi_command_size[8] = { 6, 10, 10, 12,
-                                                   16, 12, 10, 10 };
-
-#define COMMAND_SIZE(opcode) scsi_command_size[((opcode) >> 5) & 7]
-
-static const char unknown[] = "UNKNOWN";
-
-static const char * group_0_commands[] = {
-/* 00-03 */ "Test Unit Ready", "Rezero Unit", unknown, "Request Sense",
-/* 04-07 */ "Format Unit", "Read Block Limits", unknown, "Reasssign Blocks",
-/* 08-0d */ "Read (6)", unknown, "Write (6)", "Seek (6)", unknown, unknown,
-/* 0e-12 */ unknown, "Read Reverse", "Write Filemarks", "Space", "Inquiry",
-/* 13-16 */ "Verify", "Recover Buffered Data", "Mode Select", "Reserve",
-/* 17-1b */ "Release", "Copy", "Erase", "Mode Sense", "Start/Stop Unit",
-/* 1c-1d */ "Receive Diagnostic", "Send Diagnostic",
-/* 1e-1f */ "Prevent/Allow Medium Removal", unknown,
-};
-
-
-static const char *group_1_commands[] = {
-/* 20-23 */  unknown, unknown, unknown, "Read Format capacities",
-/* 24-28 */ "Set window", "Read Capacity",
-            unknown, unknown, "Read (10)",
-/* 29-2d */ "Read Generation", "Write (10)", "Seek (10)", "Erase",
-            "Read updated block",
-/* 2e-31 */ "Write Verify","Verify", "Search High", "Search Equal",
-/* 32-34 */ "Search Low", "Set Limits", "Prefetch or Read Position",
-/* 35-37 */ "Synchronize Cache","Lock/Unlock Cache", "Read Defect Data",
-/* 38-3c */ "Medium Scan", "Compare", "Copy Verify", "Write Buffer",
-            "Read Buffer",
-/* 3d-3f */ "Update Block", "Read Long",  "Write Long",
-};
-
-static const char *group_2_commands[] = {
-/* 40-41 */ "Change Definition", "Write Same",
-/* 42-48 */ "Read sub-channel", "Read TOC", "Read header",
-            "Play audio (10)", "Get configuration", "Play audio msf",
-            "Play audio track/index",
-/* 49-4f */ "Play track relative (10)", "Get event status notification",
-            "Pause/resume", "Log Select", "Log Sense", "Stop play/scan",
-            unknown,
-/* 50-55 */ "Xdwrite", "Xpwrite, Read disk info", "Xdread, Read track info",
-            "Reserve track", "Send OPC onfo", "Mode Select (10)",
-/* 56-5b */ "Reserve (10)", "Release (10)", "Repair track", "Read master cue",
-            "Mode Sense (10)", "Close track/session",
-/* 5c-5f */ "Read buffer capacity", "Send cue sheet", "Persistent reserve in",
-            "Persistent reserve out",
-};
-
-/* The following are 16 byte commands in group 4 */
-static const char *group_4_commands[] = {
-/* 80-84 */ "Xdwrite (16)", "Rebuild (16)", "Regenerate (16)", "Extended copy",
-            "Receive copy results",
-/* 85-89 */ "Memory Export In (16)", "Access control in", "Access control out",
-            "Read (16)", "Memory Export Out (16)",
-/* 8a-8f */ "Write (16)", unknown, "Read attributes", "Write attributes",
-            "Write and verify (16)", "Verify (16)",
-/* 90-94 */ "Pre-fetch (16)", "Synchronize cache (16)",
-            "Lock/unlock cache (16)", "Write same (16)", unknown,
-/* 95-99 */ unknown, unknown, unknown, unknown, unknown,
-/* 9a-9f */ unknown, unknown, unknown, unknown, "Service action in",
-            "Service action out",
-};
-
-/* The following are 12 byte commands in group 5 */
-static const char *group_5_commands[] = {
-/* a0-a5 */ "Report luns", "Blank", "Send event", "Maintenance (in)",
-            "Maintenance (out)", "Move medium/play audio(12)",
-/* a6-a9 */ "Exchange medium", "Move medium attached", "Read(12)",
-            "Play track relative(12)",
-/* aa-ae */ "Write(12)", unknown, "Erase(12), Get Performance",
-            "Read DVD structure", "Write and verify(12)",
-/* af-b1 */ "Verify(12)", "Search data high(12)", "Search data equal(12)",
-/* b2-b4 */ "Search data low(12)", "Set limits(12)",
-            "Read element status attached",
-/* b5-b6 */ "Request volume element address", "Send volume tag, set streaming",
-/* b7-b9 */ "Read defect data(12)", "Read element status", "Read CD msf",
-/* ba-bc */ "Redundancy group (in), Scan",
-            "Redundancy group (out), Set cd-rom speed", "Spare (in), Play cd",
-/* bd-bf */ "Spare (out), Mechanism status", "Volume set (in), Read cd",
-            "Volume set (out), Send DVD structure",
-};
-
-
-#define group(opcode) (((opcode) >> 5) & 7)
-
-#define RESERVED_GROUP  0
-#define VENDOR_GROUP    1
-
-static const char **commands[] = {
-    group_0_commands, group_1_commands, group_2_commands,
-    (const char **) RESERVED_GROUP, group_4_commands,
-    group_5_commands, (const char **) VENDOR_GROUP,
-    (const char **) VENDOR_GROUP
-};
-
-static const char reserved[] = "RESERVED";
-static const char vendor[] = "VENDOR SPECIFIC";
-
-static void print_opcode(int opcode) {
-    const char **table = commands[ group(opcode) ];
-
-    switch ((unsigned long) table) {
-    case RESERVED_GROUP:
-        fprintf(OUTP, "%s(0x%02x)", reserved, opcode);
-        break;
-    case VENDOR_GROUP:
-        fprintf(OUTP, "%s(0x%02x)", vendor, opcode);
-        break;
-    default:
-        fprintf(OUTP, "%s",table[opcode & 0x1f]);
-        break;
-    }
-}
-
-void sg_print_command (const unsigned char * command) {
-    int k, s;
-    print_opcode(command[0]);
-    fprintf(OUTP, " [");
-    for (k = 0, s = COMMAND_SIZE(command[0]); k < s; ++k)
-        fprintf(OUTP, "%02x ", command[k]);
-    fprintf(OUTP, "]\n");
-}
-
-void sg_print_status(int masked_status) 
-{
-    int scsi_status = (masked_status << 1) & 0x7e;
-
-    sg_print_scsi_status(scsi_status);
-}
-
-void sg_print_scsi_status(int scsi_status) 
-{
-    const char * ccp;
-
-    scsi_status &= 0x7e; /* sanitize as much as possible */
-    switch (scsi_status) {
-        case 0: ccp = "Good"; break;
-        case 0x2: ccp = "Check Condition"; break;
-        case 0x4: ccp = "Condition Met"; break;
-        case 0x8: ccp = "Busy"; break;
-        case 0x10: ccp = "Intermediate"; break;
-        case 0x14: ccp = "Intermediate-Condition Met"; break;
-        case 0x18: ccp = "Reservation Conflict"; break;
-        case 0x22: ccp = "Command Terminated (obsolete)"; break;
-        case 0x28: ccp = "Task set Full"; break;
-        case 0x30: ccp = "ACA Active"; break;
-        case 0x40: ccp = "Task Aborted"; break;
-        default: ccp = "Unknown status"; break;
-    }
-    fprintf(OUTP, "%s ", ccp);
-}
-
-/* In brackets is the related SCSI document (see www.t10.org) with the */
-/* peripheral device type after the colon */
-/* No programmatic use is made of these flags currently */
-#define D 0x0001  /* DIRECT ACCESS DEVICE (disk) [SBC-2: 0] */
-#define T 0x0002  /* SEQUENTIAL ACCESS DEVICE (tape) [SSC: 1] */
-#define L 0x0004  /* PRINTER DEVICE [SSC: 2] */
-#define P 0x0008  /* PROCESSOR DEVICE [SPC-2: 3] */
-#define W 0x0010  /* WRITE ONCE READ MULTIPLE DEVICE [SBC-2: 4] */
-#define R 0x0020  /* CD/DVD DEVICE [MMC-2: 5] */
-#define S 0x0040  /* SCANNER DEVICE [SCSI-2 (obsolete): 6] */
-#define O 0x0080  /* OPTICAL MEMORY DEVICE [SBC-2: 7] */
-#define M 0x0100  /* MEDIA CHANGER DEVICE [SMC-2: 8] */
-#define C 0x0200  /* COMMUNICATION DEVICE [SCSI-2 (obsolete): 9] */
-#define A 0x0400  /* ARRAY STORAGE [SCC-2: 12] */
-#define E 0x0800  /* ENCLOSURE SERVICES DEVICE [SES: 13] */
-#define B 0x1000  /* SIMPLIFIED DIRECT ACCESS DEVICE [RBC: 14] */
-#define K 0x2000  /* OPTICAL CARD READER/WRITER DEVICE [OCRW: 15] */
-
-#define SC_ALL_DEVS ( D|T|L|P|W|R|S|O|M|C|A|E|B|K )
-
-/* oft used strings are encoded using ASCII codes 0x1 to 0x1f . */
-/* This is to save space. This encoding should be UTF-8 and */
-/* UTF-16 friendly. */
-#define SC_AUDIO_PLAY_OPERATION "\x1"
-#define SC_LOGICAL_UNIT "\x2"
-#define SC_NOT_READY "\x3"
-#define SC_OPERATION "\x4"
-#define SC_IN_PROGRESS "\x5"
-#define SC_HARDWARE_IF "\x6"
-#define SC_CONTROLLER_IF "\x7"
-#define SC_DATA_CHANNEL_IF "\x8"
-#define SC_SERVO_IF "\x9"
-#define SC_SPINDLE_IF "\xa"
-#define SC_FIRMWARE_IF "\xb"
-#define SC_RECOVERED_DATA "\xc"
-#define SC_ERROR_RATE_TOO_HIGH "\xd"
-#define SC_TIMES_TOO_HIGH "\xe"
-
-
-struct error_info{
-    unsigned char code1, code2;
-    unsigned short int devices;
-    const char * text;
-};
-
-struct error_info2{
-    unsigned char code1, code2_min, code2_max;
-    unsigned short int devices;
-    const char * text;
-};
-
-static struct error_info2 additional2[] =
-{
-  {0x40,0x00,0x7f,D,"Ram failure (%x)"},
-  {0x40,0x80,0xff,D|T|L|P|W|R|S|O|M|C,"Diagnostic failure on component (%x)"},
-  {0x41,0x00,0xff,D,"Data path failure (%x)"},
-  {0x42,0x00,0xff,D,"Power-on or self-test failure (%x)"},
-  {0, 0, 0, 0, NULL}
-};
-
-static struct error_info additional[] =
-{
-  {0x00,0x00,SC_ALL_DEVS,"No additional sense information"},
-  {0x00,0x01,T,"Filemark detected"},
-  {0x00,0x02,T|S,"End-of-partition/medium detected"},
-  {0x00,0x03,T,"Setmark detected"},
-  {0x00,0x04,T|S,"Beginning-of-partition/medium detected"},
-  {0x00,0x05,T|L|S,"End-of-data detected"},
-  {0x00,0x06,SC_ALL_DEVS,"I/O process terminated"},
-  {0x00,0x11,R,SC_AUDIO_PLAY_OPERATION SC_IN_PROGRESS},
-  {0x00,0x12,R,SC_AUDIO_PLAY_OPERATION "paused"},
-  {0x00,0x13,R,SC_AUDIO_PLAY_OPERATION "successfully completed"},
-  {0x00,0x14,R,SC_AUDIO_PLAY_OPERATION "stopped due to error"},
-  {0x00,0x15,R,"No current audio status to return"},
-  {0x00,0x16,SC_ALL_DEVS,SC_OPERATION SC_IN_PROGRESS},
-  {0x00,0x17,D|T|L|W|R|S|O|M|A|E|B|K,"Cleaning requested"},
-  {0x00,0x18,T,"Erase" SC_OPERATION SC_IN_PROGRESS},
-  {0x00,0x19,T,"Locate" SC_OPERATION SC_IN_PROGRESS},
-  {0x00,0x1a,T,"Rewind" SC_OPERATION SC_IN_PROGRESS},
-  {0x00,0x1b,T,"Set capacity" SC_OPERATION SC_IN_PROGRESS},
-  {0x00,0x1c,T,"Verify" SC_OPERATION SC_IN_PROGRESS},
-  {0x01,0x00,D|W|O|B|K,"No index/sector signal"},
-  {0x02,0x00,D|W|R|O|M|B|K,"No seek complete"},
-  {0x03,0x00,D|T|L|W|S|O|B|K,"Peripheral device write fault"},
-  {0x03,0x01,T,"No write current"},
-  {0x03,0x02,T,"Excessive write errors"},
-  {0x04,0x00,SC_ALL_DEVS,SC_LOGICAL_UNIT SC_NOT_READY "cause not reportable"},
-  {0x04,0x01,SC_ALL_DEVS,SC_LOGICAL_UNIT "is" SC_IN_PROGRESS 
-                "of becoming ready"},
-  {0x04,0x02,SC_ALL_DEVS,SC_LOGICAL_UNIT SC_NOT_READY 
-                "initializing cmd. required"},
-  {0x04,0x03,SC_ALL_DEVS,SC_LOGICAL_UNIT SC_NOT_READY 
-                "manual intervention required"},
-  {0x04,0x04,D|T|L|R|O|B,SC_LOGICAL_UNIT SC_NOT_READY "format" SC_IN_PROGRESS},
-  {0x04,0x05,D|T|W|O|M|C|A|B|K,SC_LOGICAL_UNIT SC_NOT_READY 
-                "rebuild" SC_IN_PROGRESS},
-  {0x04,0x06,D|T|W|O|M|C|A|B|K,SC_LOGICAL_UNIT SC_NOT_READY 
-                "recalculation" SC_IN_PROGRESS},
-  {0x04,0x07,SC_ALL_DEVS,SC_LOGICAL_UNIT SC_NOT_READY 
-                SC_OPERATION SC_IN_PROGRESS},
-  {0x04,0x08,R,SC_LOGICAL_UNIT SC_NOT_READY "long write" SC_IN_PROGRESS},
-  {0x04,0x09,SC_ALL_DEVS,SC_LOGICAL_UNIT SC_NOT_READY "self-test" 
-                SC_IN_PROGRESS},
-  {0x04,0x0a,SC_ALL_DEVS,SC_LOGICAL_UNIT 
-                "not accessible, asymmetric access state transition"},
-  {0x04,0x0b,SC_ALL_DEVS,SC_LOGICAL_UNIT 
-                "not accessible, target port in standby state"},
-  {0x04,0x0c,SC_ALL_DEVS,SC_LOGICAL_UNIT 
-                "not accessible, target port in unavailable state"},
-  {0x04,0x10,SC_ALL_DEVS,SC_LOGICAL_UNIT SC_NOT_READY
-                "auxiliary memory not accessible"},
-  {0x05,0x00,D|T|L|W|R|S|O|M|C|A|E|B|K,SC_LOGICAL_UNIT 
-                "does not respond to selection"},
-  {0x06,0x00,D|W|R|O|M|B|K,"No reference position found"},
-  {0x07,0x00,D|T|L|W|R|S|O|M|B|K,"Multiple peripheral devices selected"},
-  {0x08,0x00,D|T|L|W|R|S|O|M|C|A|E|B|K,SC_LOGICAL_UNIT "communication failure"},
-  {0x08,0x01,D|T|L|W|R|S|O|M|C|A|E|B|K,SC_LOGICAL_UNIT 
-                "communication time-out"},
-  {0x08,0x02,D|T|L|W|R|S|O|M|C|A|E|B|K,SC_LOGICAL_UNIT 
-                "communication parity error"},
-  {0x08,0x03,D|T|R|O|M|B|K,SC_LOGICAL_UNIT 
-                "communication CRC error (Ultra-DMA/32)"},
-  {0x08,0x04,D|T|L|P|W|R|S|O|C|K,"Unreachable copy target"},
-  {0x09,0x00,D|T|W|R|O|B,"Track following error"},
-  {0x09,0x01,W|R|O|K,"Tracking servo failure"},
-  {0x09,0x02,W|R|O|K,"Focus servo failure"},
-  {0x09,0x03,W|R|O,"Spindle servo failure"},
-  {0x09,0x04,D|T|W|R|O|B,"Head select fault"},
-  {0x0A,0x00,SC_ALL_DEVS,"Error log overflow"},
-  {0x0B,0x00,SC_ALL_DEVS,"Warning"},
-  {0x0B,0x01,SC_ALL_DEVS,"Warning - specified temperature exceeded"},
-  {0x0B,0x02,SC_ALL_DEVS,"Warning - enclosure degraded"},
-  {0x0C,0x00,T|R|S,"Write error"},
-  {0x0C,0x01,K,"Write error - recovered with auto reallocation"},
-  {0x0C,0x02,D|W|O|B|K,"Write error - auto reallocation failed"},
-  {0x0C,0x03,D|W|O|B|K,"Write error - recommend reassignment"},
-  {0x0C,0x04,D|T|W|O|B,"Compression check miscompare error"},
-  {0x0C,0x05,D|T|W|O|B,"Data expansion occurred during compression"},
-  {0x0C,0x06,D|T|W|O|B,"Block not compressible"},
-  {0x0C,0x07,R,"Write error - recovery needed"},
-  {0x0C,0x08,R,"Write error - recovery failed"},
-  {0x0C,0x09,R,"Write error - loss of streaming"},
-  {0x0C,0x0A,R,"Write error - padding blocks added"},
-  {0x0C,0x0B,D|T|W|R|O|M|B,"Auxiliary memory write error"},
-  {0x0C,0x0C,SC_ALL_DEVS,"Write error - unexpected unsolicited data"},
-  {0x0C,0x0D,SC_ALL_DEVS,"Write error - not enough unsolicited data"},
-  {0x0D,0x00,D|T|L|P|W|R|S|O|C|A|K,
-                "Error detected by third party temporary initiator"},
-  {0x0D,0x01,D|T|L|P|W|R|S|O|C|A|K, "Third party device failure"},
-  {0x0D,0x02,D|T|L|P|W|R|S|O|C|A|K, "Copy target device not reachable"},
-  {0x0D,0x03,D|T|L|P|W|R|S|O|C|A|K, "Incorrect copy target device"},
-  {0x0D,0x04,D|T|L|P|W|R|S|O|C|A|K, "Copy target device underrun"},
-  {0x0D,0x05,D|T|L|P|W|R|S|O|C|A|K, "Copy target device overrun"},
-  {0x10,0x00,D|W|O|B|K,"Id CRC or ECC error"},
-  {0x11,0x00,D|T|W|R|S|O|B|K,"Unrecovered read error"},
-  {0x11,0x01,D|T|W|R|S|O|B|K,"Read retries exhausted"},
-  {0x11,0x02,D|T|W|R|S|O|B|K,"Error too long to correct"},
-  {0x11,0x03,D|T|W|S|O|B|K,"Multiple read errors"},
-  {0x11,0x04,D|W|O|B|K,"Unrecovered read error - auto reallocate failed"},
-  {0x11,0x05,W|R|O|B,"L-EC uncorrectable error"},
-  {0x11,0x06,W|R|O|B,"CIRC unrecovered error"},
-  {0x11,0x07,W|O|B,"Data re-synchronization error"},
-  {0x11,0x08,T,"Incomplete block read"},
-  {0x11,0x09,T,"No gap found"},
-  {0x11,0x0A,D|T|O|B|K,"Miscorrected error"},
-  {0x11,0x0B,D|W|O|B|K,"Unrecovered read error - recommend reassignment"},
-  {0x11,0x0C,D|W|O|B|K,"Unrecovered read error - recommend rewrite the data"},
-  {0x11,0x0D,D|T|W|R|O|B,"De-compression CRC error"},
-  {0x11,0x0E,D|T|W|R|O|B,"Cannot decompress using declared algorithm"},
-  {0x11,0x0F,R,"Error reading UPC/EAN number"},
-  {0x11,0x10,R,"Error reading ISRC number"},
-  {0x11,0x11,R,"Read error - loss of streaming"},
-  {0x11,0x12,D|T|W|R|O|M|B,"Auxiliary memory read error"},
-  {0x11,0x13,SC_ALL_DEVS,"Read error - failed retransmission request"},
-  {0x12,0x00,D|W|O|B|K,"Address mark not found for id field"},
-  {0x13,0x00,D|W|O|B|K,"Address mark not found for data field"},
-  {0x14,0x00,D|T|L|W|R|S|O|B|K,"Recorded entity not found"},
-  {0x14,0x01,D|T|W|R|O|B|K,"Record not found"},
-  {0x14,0x02,T,"Filemark or setmark not found"},
-  {0x14,0x03,T,"End-of-data not found"},
-  {0x14,0x04,T,"Block sequence error"},
-  {0x14,0x05,D|T|W|O|B|K,"Record not found - recommend reassignment"},
-  {0x14,0x06,D|T|W|O|B|K,"Record not found - data auto-reallocated"},
-  {0x14,0x07,T,"Locate" SC_OPERATION " failure"},
-  {0x15,0x00,D|T|L|W|R|S|O|M|B|K,"Random positioning error"},
-  {0x15,0x01,D|T|L|W|R|S|O|M|B|K,"Mechanical positioning error"},
-  {0x15,0x02,D|T|W|R|O|B|K,"Positioning error detected by read of medium"},
-  {0x16,0x00,D|W|O|B|K,"Data synchronization mark error"},
-  {0x16,0x01,D|W|O|B|K,"Data sync error - data rewritten"},
-  {0x16,0x02,D|W|O|B|K,"Data sync error - recommend rewrite"},
-  {0x16,0x03,D|W|O|B|K,"Data sync error - data auto-reallocated"},
-  {0x16,0x04,D|W|O|B|K,"Data sync error - recommend reassignment"},
-  {0x17,0x00,D|T|W|R|S|O|B|K,SC_RECOVERED_DATA 
-                "with no error correction applied"},
-  {0x17,0x01,D|T|W|R|S|O|B|K,SC_RECOVERED_DATA "with retries"},
-  {0x17,0x02,D|T|W|R|O|B|K,SC_RECOVERED_DATA "with positive head offset"},
-  {0x17,0x03,D|T|W|R|O|B|K,SC_RECOVERED_DATA "with negative head offset"},
-  {0x17,0x04,W|R|O|B,SC_RECOVERED_DATA "with retries and/or circ applied"},
-  {0x17,0x05,D|W|R|O|B|K,SC_RECOVERED_DATA "using previous sector id"},
-  {0x17,0x06,D|W|O|B|K,SC_RECOVERED_DATA "without ecc - data auto-reallocated"},
-  {0x17,0x07,D|W|R|O|B|K,SC_RECOVERED_DATA 
-                "without ecc - recommend reassignment"},
-  {0x17,0x08,D|W|R|O|B|K,SC_RECOVERED_DATA "without ecc - recommend rewrite"},
-  {0x17,0x09,D|W|R|O|B|K,SC_RECOVERED_DATA "without ecc - data rewritten"},
-  {0x18,0x00,D|T|W|R|O|B|K,SC_RECOVERED_DATA "with error correction applied"},
-  {0x18,0x01,D|W|R|O|B|K,SC_RECOVERED_DATA 
-                "with error corr. & retries applied"},
-  {0x18,0x02,D|W|R|O|B|K,SC_RECOVERED_DATA "- data auto-reallocated"},
-  {0x18,0x03,R,SC_RECOVERED_DATA "with CIRC"},
-  {0x18,0x04,R,SC_RECOVERED_DATA "with L-EC"},
-  {0x18,0x05,D|W|R|O|B|K,SC_RECOVERED_DATA "- recommend reassignment"},
-  {0x18,0x06,D|W|R|O|B|K,SC_RECOVERED_DATA "- recommend rewrite"},
-  {0x18,0x07,D|W|O|B|K,SC_RECOVERED_DATA "with ecc - data rewritten"},
-  {0x18,0x08,R,SC_RECOVERED_DATA "with linking"},
-  {0x19,0x00,D|O|K,"Defect list error"},
-  {0x19,0x01,D|O|K,"Defect list not available"},
-  {0x19,0x02,D|O|K,"Defect list error in primary list"},
-  {0x19,0x03,D|O|K,"Defect list error in grown list"},
-  {0x1A,0x00,SC_ALL_DEVS,"Parameter list length error"},
-  {0x1B,0x00,SC_ALL_DEVS,"Synchronous data transfer error"},
-  {0x1C,0x00,D|O|B|K,"Defect list not found"},
-  {0x1C,0x01,D|O|B|K,"Primary defect list not found"},
-  {0x1C,0x02,D|O|B|K,"Grown defect list not found"},
-  {0x1D,0x00,D|T|W|R|O|B|K,"Miscompare during verify" SC_OPERATION},
-  {0x1E,0x00,D|W|O|B|K,"Recovered id with ecc correction"},
-  {0x1F,0x00,D|O|K,"Partial defect list transfer"},
-  {0x20,0x00,SC_ALL_DEVS,"Invalid command" SC_OPERATION " code"},
-  {0x20,0x01,D|T|P|W|R|O|M|A|E|B|K,
-        "Access denied - initiator pending-enrolled"},
-  {0x20,0x02,D|T|P|W|R|O|M|A|E|B|K,"Access denied - no access rights"},
-  {0x20,0x03,D|T|P|W|R|O|M|A|E|B|K,"Access denied - no mgmt id key"},
-  {0x20,0x04,T,"Illegal command while in write capable state"},
-  {0x20,0x05,T,"Obsolete"},
-  {0x20,0x06,T,"Illegal command while in explicit address mode"},
-  {0x20,0x07,T,"Illegal command while in implicit address mode"},
-  {0x20,0x08,D|T|P|W|R|O|M|A|E|B|K,"Access denied - enrollment conflict"},
-  {0x20,0x09,D|T|P|W|R|O|M|A|E|B|K,"Access denied - invalid LU identifier"},
-  {0x20,0x0A,D|T|P|W|R|O|M|A|E|B|K,"Access denied - invalid proxy token"},
-  {0x20,0x0B,D|T|P|W|R|O|M|A|E|B|K,"Access denied - ACL LUN conflict"},
-  {0x21,0x00,D|T|W|R|O|M|B|K,"Logical block address out of range"},
-  {0x21,0x01,D|T|W|R|O|M|B|K,"Invalid element address"},
-  {0x21,0x02,R,"Invalid address for write"},
-  {0x22,0x00,D,"Illegal function (use 20 00,24 00,or 26 00)"},
-  {0x24,0x00,SC_ALL_DEVS,"Invalid field in cdb"},
-  {0x24,0x01,SC_ALL_DEVS,"CDB decryption error"},
-  {0x25,0x00,SC_ALL_DEVS,SC_LOGICAL_UNIT "not supported"},
-  {0x26,0x00,SC_ALL_DEVS,"Invalid field in parameter list"},
-  {0x26,0x01,SC_ALL_DEVS,"Parameter not supported"},
-  {0x26,0x02,SC_ALL_DEVS,"Parameter value invalid"},
-  {0x26,0x03,D|T|L|P|W|R|S|O|M|C|A|E|K,"Threshold parameters not supported"},
-  {0x26,0x04,SC_ALL_DEVS,"Invalid release of persistent reservation"},
-  {0x26,0x05,D|T|L|P|W|R|S|O|M|C|A|B|K,"Data decryption error"},
-  {0x26,0x06,D|T|L|P|W|R|S|O|C|K,"Too many target descriptors"},
-  {0x26,0x07,D|T|L|P|W|R|S|O|C|K,"Unsupported target descriptor type code"},
-  {0x26,0x08,D|T|L|P|W|R|S|O|C|K,"Too many segment descriptors"},
-  {0x26,0x09,D|T|L|P|W|R|S|O|C|K,"Unsupported segment descriptor type code"},
-  {0x26,0x0A,D|T|L|P|W|R|S|O|C|K,"Unexpected inexact segment"},
-  {0x26,0x0B,D|T|L|P|W|R|S|O|C|K,"Inline data length exceeded"},
-  {0x26,0x0C,D|T|L|P|W|R|S|O|C|K,
-                "Invalid" SC_OPERATION " for copy source or destination"},
-  {0x26,0x0D,D|T|L|P|W|R|S|O|C|K,"Copy segment granularity violation"},
-  {0x27,0x00,D|T|W|R|O|B|K,"Write protected"},
-  {0x27,0x01,D|T|W|R|O|B|K,"Hardware write protected"},
-  {0x27,0x02,D|T|W|R|O|B|K,SC_LOGICAL_UNIT "software write protected"},
-  {0x27,0x03,T|R,"Associated write protect"},
-  {0x27,0x04,T|R,"Persistent write protect"},
-  {0x27,0x05,T|R,"Permanent write protect"},
-  {0x27,0x06,R,"Conditional write protect"},
-  {0x28,0x00,SC_ALL_DEVS,"Not ready to ready change, medium may have changed"},
-  {0x28,0x01,D|T|W|R|O|M|B,"Import or export element accessed"},
-  {0x29,0x00,SC_ALL_DEVS,"Power on, reset, or bus device reset occurred"},
-  {0x29,0x01,SC_ALL_DEVS,"Power on occurred"},
-  {0x29,0x02,SC_ALL_DEVS,"Scsi bus reset occurred"},
-  {0x29,0x03,SC_ALL_DEVS,"Bus device reset function occurred"},
-  {0x29,0x04,SC_ALL_DEVS,"Device internal reset"},
-  {0x29,0x05,SC_ALL_DEVS,"Transceiver mode changed to single-ended"},
-  {0x29,0x06,SC_ALL_DEVS,"Transceiver mode changed to lvd"},
-  {0x29,0x07,SC_ALL_DEVS,"I_T nexus loss occurred"},
-  {0x2A,0x00,D|T|L|W|R|S|O|M|C|A|E|B|K,"Parameters changed"},
-  {0x2A,0x01,D|T|L|W|R|S|O|M|C|A|E|B|K,"Mode parameters changed"},
-  {0x2A,0x02,D|T|L|W|R|S|O|M|C|A|E|K,"Log parameters changed"},
-  {0x2A,0x03,D|T|L|P|W|R|S|O|M|C|A|E|K,"Reservations preempted"},
-  {0x2A,0x04,D|T|L|P|W|R|S|O|M|C|A|E,"Reservations released"},
-  {0x2A,0x05,D|T|L|P|W|R|S|O|M|C|A|E,"Registrations preempted"},
-  {0x2A,0x06,SC_ALL_DEVS,"Asymmetric access state changed"},
-  {0x2A,0x07,SC_ALL_DEVS,"Implicit asymmetric access state transition failed"},
-  {0x2B,0x00,D|T|L|P|W|R|S|O|C|K,
-                "Copy cannot execute since host cannot disconnect"},
-  {0x2C,0x00,SC_ALL_DEVS,"Command sequence error"},
-  {0x2C,0x01,S,"Too many windows specified"},
-  {0x2C,0x02,S,"Invalid combination of windows specified"},
-  {0x2C,0x03,R,"Current program area is not empty"},
-  {0x2C,0x04,R,"Current program area is empty"},
-  {0x2C,0x05,B,"Illegal power condition request"},
-  {0x2C,0x06,R,"Persistent prevent conflict"},
-  {0x2C,0x07,SC_ALL_DEVS,"Previous busy status"},
-  {0x2C,0x08,SC_ALL_DEVS,"Previous task set full status"},
-  {0x2C,0x09,D|T|L|P|W|R|S|O|M|E|B|K,"Previous reservation conflict status"},
-  {0x2D,0x00,T,"Overwrite error on update in place"},
-  {0x2F,0x00,SC_ALL_DEVS,"Commands cleared by another initiator"},
-  {0x30,0x00,D|T|W|R|O|M|B|K,"Incompatible medium installed"},
-  {0x30,0x01,D|T|W|R|O|B|K,"Cannot read medium - unknown format"},
-  {0x30,0x02,D|T|W|R|O|B|K,"Cannot read medium - incompatible format"},
-  {0x30,0x03,D|T|R|K,"Cleaning cartridge installed"},
-  {0x30,0x04,D|T|W|R|O|B|K,"Cannot write medium - unknown format"},
-  {0x30,0x05,D|T|W|R|O|B|K,"Cannot write medium - incompatible format"},
-  {0x30,0x06,D|T|W|R|O|B,"Cannot format medium - incompatible medium"},
-  {0x30,0x07,D|T|L|W|R|S|O|M|A|E|B|K,"Cleaning failure"},
-  {0x30,0x08,R,"Cannot write - application code mismatch"},
-  {0x30,0x09,R,"Current session not fixated for append"},
-  {0x30,0x10,R,"Medium not formatted"}, /* should ascq be 0xa ?? */
-  {0x31,0x00,D|T|W|R|O|B|K,"Medium format corrupted"},
-  {0x31,0x01,D|L|R|O|B,"Format command failed"},
-  {0x31,0x02,R,"Zoned formatting failed due to spare linking"},
-  {0x32,0x00,D|W|O|B|K,"No defect spare location available"},
-  {0x32,0x01,D|W|O|B|K,"Defect list update failure"},
-  {0x33,0x00,T,"Tape length error"},
-  {0x34,0x00,SC_ALL_DEVS,"Enclosure failure"},
-  {0x35,0x00,SC_ALL_DEVS,"Enclosure services failure"},
-  {0x35,0x01,SC_ALL_DEVS,"Unsupported enclosure function"},
-  {0x35,0x02,SC_ALL_DEVS,"Enclosure services unavailable"},
-  {0x35,0x03,SC_ALL_DEVS,"Enclosure services transfer failure"},
-  {0x35,0x04,SC_ALL_DEVS,"Enclosure services transfer refused"},
-  {0x36,0x00,L,"Ribbon,ink,or toner failure"},
-  {0x37,0x00,D|T|L|W|R|S|O|M|C|A|E|B|K,"Rounded parameter"},
-  {0x38,0x00,B,"Event status notification"},
-  {0x38,0x02,B,"Esn - power management class event"},
-  {0x38,0x04,B,"Esn - media class event"},
-  {0x38,0x06,B,"Esn - device busy class event"},
-  {0x39,0x00,D|T|L|W|R|S|O|M|C|A|E|K,"Saving parameters not supported"},
-  {0x3A,0x00,D|T|L|W|R|S|O|M|B|K,"Medium not present"},
-  {0x3A,0x01,D|T|W|R|O|M|B|K,"Medium not present - tray closed"},
-  {0x3A,0x02,D|T|W|R|O|M|B|K,"Medium not present - tray open"},
-  {0x3A,0x03,D|T|W|R|O|M|B,"Medium not present - loadable"},
-  {0x3A,0x04,D|T|W|R|O|M|B,
-                "Medium not present - medium auxiliary memory accessible"},
-  {0x3B,0x00,T|L,"Sequential positioning error"},
-  {0x3B,0x01,T,"Tape position error at beginning-of-medium"},
-  {0x3B,0x02,T,"Tape position error at end-of-medium"},
-  {0x3B,0x03,L,"Tape or electronic vertical forms unit " SC_NOT_READY},
-  {0x3B,0x04,L,"Slew failure"},
-  {0x3B,0x05,L,"Paper jam"},
-  {0x3B,0x06,L,"Failed to sense top-of-form"},
-  {0x3B,0x07,L,"Failed to sense bottom-of-form"},
-  {0x3B,0x08,T,"Reposition error"},
-  {0x3B,0x09,S,"Read past end of medium"},
-  {0x3B,0x0A,S,"Read past beginning of medium"},
-  {0x3B,0x0B,S,"Position past end of medium"},
-  {0x3B,0x0C,T|S,"Position past beginning of medium"},
-  {0x3B,0x0D,D|T|W|R|O|M|B|K,"Medium destination element full"},
-  {0x3B,0x0E,D|T|W|R|O|M|B|K,"Medium source element empty"},
-  {0x3B,0x0F,R,"End of medium reached"},
-  {0x3B,0x11,D|T|W|R|O|M|B|K,"Medium magazine not accessible"},
-  {0x3B,0x12,D|T|W|R|O|M|B|K,"Medium magazine removed"},
-  {0x3B,0x13,D|T|W|R|O|M|B|K,"Medium magazine inserted"},
-  {0x3B,0x14,D|T|W|R|O|M|B|K,"Medium magazine locked"},
-  {0x3B,0x15,D|T|W|R|O|M|B|K,"Medium magazine unlocked"},
-  {0x3B,0x16,R,"Mechanical positioning or changer error"},
-  {0x3D,0x00,D|T|L|P|W|R|S|O|M|C|A|E|K,"Invalid bits in identify message"},
-  {0x3E,0x00,SC_ALL_DEVS,SC_LOGICAL_UNIT "has not self-configured yet"},
-  {0x3E,0x01,SC_ALL_DEVS,SC_LOGICAL_UNIT "failure"},
-  {0x3E,0x02,SC_ALL_DEVS,"Timeout on logical unit"},
-  {0x3E,0x03,SC_ALL_DEVS,SC_LOGICAL_UNIT "failed self-test"},
-  {0x3E,0x04,SC_ALL_DEVS,SC_LOGICAL_UNIT "unable to update self-test log"},
-  {0x3F,0x00,SC_ALL_DEVS,"Target operating conditions have changed"},
-  {0x3F,0x01,SC_ALL_DEVS,"Microcode has been changed"},
-  {0x3F,0x02,D|T|L|P|W|R|S|O|M|C|B|K,"Changed operating definition"},
-  {0x3F,0x03,SC_ALL_DEVS,"Inquiry data has changed"},
-  {0x3F,0x04,D|T|W|R|O|M|C|A|E|B|K,"Component device attached"},
-  {0x3F,0x05,D|T|W|R|O|M|C|A|E|B|K,"Device identifier changed"},
-  {0x3F,0x06,D|T|W|R|O|M|C|A|E|B,"Redundancy group created or modified"},
-  {0x3F,0x07,D|T|W|R|O|M|C|A|E|B,"Redundancy group deleted"},
-  {0x3F,0x08,D|T|W|R|O|M|C|A|E|B,"Spare created or modified"},
-  {0x3F,0x09,D|T|W|R|O|M|C|A|E|B,"Spare deleted"},
-  {0x3F,0x0A,D|T|W|R|O|M|C|A|E|B|K,"Volume set created or modified"},
-  {0x3F,0x0B,D|T|W|R|O|M|C|A|E|B|K,"Volume set deleted"},
-  {0x3F,0x0C,D|T|W|R|O|M|C|A|E|B|K,"Volume set deassigned"},
-  {0x3F,0x0D,D|T|W|R|O|M|C|A|E|B|K,"Volume set reassigned"},
-  {0x3F,0x0E,D|T|L|P|W|R|S|O|M|C|A|E,"Reported luns data has changed"},
-  {0x3F,0x10,D|T|W|R|O|M|B,"Medium loadable"},
-  {0x3F,0x11,D|T|W|R|O|M|B,"Medium auxiliary memory accessible"},
-  {0x40,0x00,D,"Ram failure (should use 40 nn)"},
-  /*
-   * FIXME(eric) - need a way to represent wildcards here.
-   */
-  {0x40,0x00,SC_ALL_DEVS,"Diagnostic failure on component nn (80h-ffh)"},
-  {0x41,0x00,D,"Data path failure (should use 40 nn)"},
-  {0x42,0x00,D,"Power-on or self-test failure (should use 40 nn)"},
-  {0x43,0x00,SC_ALL_DEVS,"Message error"},
-  {0x44,0x00,SC_ALL_DEVS,"Internal target failure"},
-  {0x45,0x00,SC_ALL_DEVS,"Select or reselect failure"},
-  {0x46,0x00,D|T|L|P|W|R|S|O|M|C|B|K,"Unsuccessful soft reset"},
-  {0x47,0x00,SC_ALL_DEVS,"Scsi parity error"},
-  {0x47,0x01,SC_ALL_DEVS,"Data phase CRC error detected"},
-  {0x47,0x02,SC_ALL_DEVS,"Scsi parity error detected during st data phase"},
-  {0x47,0x03,SC_ALL_DEVS,"Information unit CRC error detected"},
-  {0x47,0x04,SC_ALL_DEVS,"Asynchronous information protection error detected"},
-  {0x47,0x05,SC_ALL_DEVS,"Protocol service CRC error"},
-  {0x48,0x00,SC_ALL_DEVS,"Initiator detected error message received"},
-  {0x49,0x00,SC_ALL_DEVS,"Invalid message error"},
-  {0x4A,0x00,SC_ALL_DEVS,"Command phase error"},
-  {0x4B,0x00,SC_ALL_DEVS,"Data phase error"},
-  {0x4C,0x00,SC_ALL_DEVS,SC_LOGICAL_UNIT "failed self-configuration"},
-  /*
-   * FIXME(eric) - need a way to represent wildcards here.
-   */
-  {0x4D,0x00,SC_ALL_DEVS,"Tagged overlapped commands (nn = queue tag)"},
-  {0x4E,0x00,SC_ALL_DEVS,"Overlapped commands attempted"},
-  {0x50,0x00,T,"Write append error"},
-  {0x50,0x01,T,"Write append position error"},
-  {0x50,0x02,T,"Position error related to timing"},
-  {0x51,0x00,T|R|O,"Erase failure"},
-  {0x52,0x00,T,"Cartridge fault"},
-  {0x53,0x00,D|T|L|W|R|S|O|M|B|K,"Media load or eject failed"},
-  {0x53,0x01,T,"Unload tape failure"},
-  {0x53,0x02,D|T|W|R|O|M|B|K,"Medium removal prevented"},
-  {0x54,0x00,P,"Scsi to host system interface failure"},
-  {0x55,0x00,P,"System resource failure"},
-  {0x55,0x01,D|O|B|K,"System buffer full"},
-  {0x55,0x02,D|T|L|P|W|R|S|O|M|A|E|K,"Insufficient reservation resources"},
-  {0x55,0x03,D|T|L|P|W|R|S|O|M|C|A|E,"Insufficient resources"},
-  {0x55,0x04,D|T|L|P|W|R|S|O|M|A|E,"Insufficient registration resources"},
-  {0x55,0x05,D|T|P|W|R|O|M|A|E|B|K,"Insufficient access control resources"},
-  {0x55,0x06,D|T|W|R|O|M|B,"Auxiliary memory out of space"},
-  {0x57,0x00,R,"Unable to recover table-of-contents"},
-  {0x58,0x00,O,"Generation does not exist"},
-  {0x59,0x00,O,"Updated block read"},
-  {0x5A,0x00,D|T|L|P|W|R|S|O|M|B|K,"Operator request or state change input"},
-  {0x5A,0x01,D|T|W|R|O|M|B|K,"Operator medium removal request"},
-  {0x5A,0x02,D|T|W|R|O|A|B|K,"Operator selected write protect"},
-  {0x5A,0x03,D|T|W|R|O|A|B|K,"Operator selected write permit"},
-  {0x5B,0x00,D|T|L|P|W|R|S|O|M|K,"Log exception"},
-  {0x5B,0x01,D|T|L|P|W|R|S|O|M|K,"Threshold condition met"},
-  {0x5B,0x02,D|T|L|P|W|R|S|O|M|K,"Log counter at maximum"},
-  {0x5B,0x03,D|T|L|P|W|R|S|O|M|K,"Log list codes exhausted"},
-  {0x5C,0x00,D|O,"Rpl status change"},
-  {0x5C,0x01,D|O,"Spindles synchronized"},
-  {0x5C,0x02,D|O,"Spindles not synchronized"},
-  {0x5D,0x00,SC_ALL_DEVS,"Failure prediction threshold exceeded"},
-  {0x5D,0x01,R|B,"Media failure prediction threshold exceeded"},
-  {0x5D,0x02,R,SC_LOGICAL_UNIT "failure prediction threshold exceeded"},
-  {0x5D,0x03,R,"spare area exhaustion prediction threshold exceeded"},
-        /* large series of "impending failure" messages */
-  {0x5D,0x10,D|B,SC_HARDWARE_IF "general hard drive failure"},
-  {0x5D,0x11,D|B,SC_HARDWARE_IF "drive" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x12,D|B,SC_HARDWARE_IF "data" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x13,D|B,SC_HARDWARE_IF "seek" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x14,D|B,SC_HARDWARE_IF "too many block reassigns"},
-  {0x5D,0x15,D|B,SC_HARDWARE_IF "access" SC_TIMES_TOO_HIGH },
-  {0x5D,0x16,D|B,SC_HARDWARE_IF "start unit" SC_TIMES_TOO_HIGH },
-  {0x5D,0x17,D|B,SC_HARDWARE_IF "channel parametrics"},
-  {0x5D,0x18,D|B,SC_HARDWARE_IF "controller detected"},
-  {0x5D,0x19,D|B,SC_HARDWARE_IF "throughput performance"},
-  {0x5D,0x1A,D|B,SC_HARDWARE_IF "seek time performance"},
-  {0x5D,0x1B,D|B,SC_HARDWARE_IF "spin-up retry count"},
-  {0x5D,0x1C,D|B,SC_HARDWARE_IF "drive calibration retry count"},
-  {0x5D,0x20,D|B,SC_CONTROLLER_IF "general hard drive failure"},
-  {0x5D,0x21,D|B,SC_CONTROLLER_IF "drive" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x22,D|B,SC_CONTROLLER_IF "data" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x23,D|B,SC_CONTROLLER_IF "seek" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x24,D|B,SC_CONTROLLER_IF "too many block reassigns"},
-  {0x5D,0x25,D|B,SC_CONTROLLER_IF "access" SC_TIMES_TOO_HIGH },
-  {0x5D,0x26,D|B,SC_CONTROLLER_IF "start unit" SC_TIMES_TOO_HIGH },
-  {0x5D,0x27,D|B,SC_CONTROLLER_IF "channel parametrics"},
-  {0x5D,0x28,D|B,SC_CONTROLLER_IF "controller detected"},
-  {0x5D,0x29,D|B,SC_CONTROLLER_IF "throughput performance"},
-  {0x5D,0x2A,D|B,SC_CONTROLLER_IF "seek time performance"},
-  {0x5D,0x2B,D|B,SC_CONTROLLER_IF "spin-up retry count"},
-  {0x5D,0x2C,D|B,SC_CONTROLLER_IF "drive calibration retry count"},
-  {0x5D,0x30,D|B,SC_DATA_CHANNEL_IF "general hard drive failure"},
-  {0x5D,0x31,D|B,SC_DATA_CHANNEL_IF "drive" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x32,D|B,SC_DATA_CHANNEL_IF "data" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x33,D|B,SC_DATA_CHANNEL_IF "seek" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x34,D|B,SC_DATA_CHANNEL_IF "too many block reassigns"},
-  {0x5D,0x35,D|B,SC_DATA_CHANNEL_IF "access" SC_TIMES_TOO_HIGH },
-  {0x5D,0x36,D|B,SC_DATA_CHANNEL_IF "start unit" SC_TIMES_TOO_HIGH },
-  {0x5D,0x37,D|B,SC_DATA_CHANNEL_IF "channel parametrics"},
-  {0x5D,0x38,D|B,SC_DATA_CHANNEL_IF "controller detected"},
-  {0x5D,0x39,D|B,SC_DATA_CHANNEL_IF "throughput performance"},
-  {0x5D,0x3A,D|B,SC_DATA_CHANNEL_IF "seek time performance"},
-  {0x5D,0x3B,D|B,SC_DATA_CHANNEL_IF "spin-up retry count"},
-  {0x5D,0x3C,D|B,SC_DATA_CHANNEL_IF "drive calibration retry count"},
-  {0x5D,0x40,D|B,SC_SERVO_IF "general hard drive failure"},
-  {0x5D,0x41,D|B,SC_SERVO_IF "drive" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x42,D|B,SC_SERVO_IF "data" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x43,D|B,SC_SERVO_IF "seek" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x44,D|B,SC_SERVO_IF "too many block reassigns"},
-  {0x5D,0x45,D|B,SC_SERVO_IF "access" SC_TIMES_TOO_HIGH },
-  {0x5D,0x46,D|B,SC_SERVO_IF "start unit" SC_TIMES_TOO_HIGH },
-  {0x5D,0x47,D|B,SC_SERVO_IF "channel parametrics"},
-  {0x5D,0x48,D|B,SC_SERVO_IF "controller detected"},
-  {0x5D,0x49,D|B,SC_SERVO_IF "throughput performance"},
-  {0x5D,0x4A,D|B,SC_SERVO_IF "seek time performance"},
-  {0x5D,0x4B,D|B,SC_SERVO_IF "spin-up retry count"},
-  {0x5D,0x4C,D|B,SC_SERVO_IF "drive calibration retry count"},
-  {0x5D,0x50,D|B,SC_SPINDLE_IF "general hard drive failure"},
-  {0x5D,0x51,D|B,SC_SPINDLE_IF "drive" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x52,D|B,SC_SPINDLE_IF "data" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x53,D|B,SC_SPINDLE_IF "seek" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x54,D|B,SC_SPINDLE_IF "too many block reassigns"},
-  {0x5D,0x55,D|B,SC_SPINDLE_IF "access" SC_TIMES_TOO_HIGH },
-  {0x5D,0x56,D|B,SC_SPINDLE_IF "start unit" SC_TIMES_TOO_HIGH },
-  {0x5D,0x57,D|B,SC_SPINDLE_IF "channel parametrics"},
-  {0x5D,0x58,D|B,SC_SPINDLE_IF "controller detected"},
-  {0x5D,0x59,D|B,SC_SPINDLE_IF "throughput performance"},
-  {0x5D,0x5A,D|B,SC_SPINDLE_IF "seek time performance"},
-  {0x5D,0x5B,D|B,SC_SPINDLE_IF "spin-up retry count"},
-  {0x5D,0x5C,D|B,SC_SPINDLE_IF "drive calibration retry count"},
-  {0x5D,0x60,D|B,SC_FIRMWARE_IF "general hard drive failure"},
-  {0x5D,0x61,D|B,SC_FIRMWARE_IF "drive" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x62,D|B,SC_FIRMWARE_IF "data" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x63,D|B,SC_FIRMWARE_IF "seek" SC_ERROR_RATE_TOO_HIGH },
-  {0x5D,0x64,D|B,SC_FIRMWARE_IF "too many block reassigns"},
-  {0x5D,0x65,D|B,SC_FIRMWARE_IF "access" SC_TIMES_TOO_HIGH },
-  {0x5D,0x66,D|B,SC_FIRMWARE_IF "start unit" SC_TIMES_TOO_HIGH },
-  {0x5D,0x67,D|B,SC_FIRMWARE_IF "channel parametrics"},
-  {0x5D,0x68,D|B,SC_FIRMWARE_IF "controller detected"},
-  {0x5D,0x69,D|B,SC_FIRMWARE_IF "throughput performance"},
-  {0x5D,0x6A,D|B,SC_FIRMWARE_IF "seek time performance"},
-  {0x5D,0x6B,D|B,SC_FIRMWARE_IF "spin-up retry count"},
-  {0x5D,0x6C,D|B,SC_FIRMWARE_IF "drive calibration retry count"},
-  {0x5D,0xFF,SC_ALL_DEVS,"Failure prediction threshold exceeded (false)"},
-  {0x5E,0x00,D|T|L|P|W|R|S|O|C|A|K,"Low power condition on"},
-  {0x5E,0x01,D|T|L|P|W|R|S|O|C|A|K,"Idle condition activated by timer"},
-  {0x5E,0x02,D|T|L|P|W|R|S|O|C|A|K,"Standby condition activated by timer"},
-  {0x5E,0x03,D|T|L|P|W|R|S|O|C|A|K,"Idle condition activated by command"},
-  {0x5E,0x04,D|T|L|P|W|R|S|O|C|A|K,"Standby condition activated by command"},
-  {0x5E,0x41,B,"Power state change to active"},
-  {0x5E,0x42,B,"Power state change to idle"},
-  {0x5E,0x43,B,"Power state change to standby"},
-  {0x5E,0x45,B,"Power state change to sleep"},
-  {0x5E,0x47,B|K,"Power state change to device control"},
-  {0x60,0x00,S,"Lamp failure"},
-  {0x61,0x00,S,"Video acquisition error"},
-  {0x61,0x01,S,"Unable to acquire video"},
-  {0x61,0x02,S,"Out of focus"},
-  {0x62,0x00,S,"Scan head positioning error"},
-  {0x63,0x00,R,"End of user area encountered on this track"},
-  {0x63,0x01,R,"Packet does not fit in available space"},
-  {0x64,0x00,R,"Illegal mode for this track"},
-  {0x64,0x01,R,"Invalid packet size"},
-  {0x65,0x00,SC_ALL_DEVS,"Voltage fault"},
-  {0x66,0x00,S,"Automatic document feeder cover up"},
-  {0x66,0x01,S,"Automatic document feeder lift up"},
-  {0x66,0x02,S,"Document jam in automatic document feeder"},
-  {0x66,0x03,S,"Document miss feed automatic in document feeder"},
-  {0x67,0x00,A,"Configuration failure"},
-  {0x67,0x01,A,"Configuration of incapable logical units failed"},
-  {0x67,0x02,A,"Add logical unit failed"},
-  {0x67,0x03,A,"Modification of logical unit failed"},
-  {0x67,0x04,A,"Exchange of logical unit failed"},
-  {0x67,0x05,A,"Remove of logical unit failed"},
-  {0x67,0x06,A,"Attachment of logical unit failed"},
-  {0x67,0x07,A,"Creation of logical unit failed"},
-  {0x67,0x08,A,"Assign failure occurred"},
-  {0x67,0x09,A,"Multiply assigned logical unit"},
-  {0x67,0x0A,SC_ALL_DEVS,"Set target port groups command failed"},
-  {0x68,0x00,A,SC_LOGICAL_UNIT "not configured"},
-  {0x69,0x00,A,"Data loss on logical unit"},
-  {0x69,0x01,A,"Multiple logical unit failures"},
-  {0x69,0x02,A,"Parity/data mismatch"},
-  {0x6A,0x00,A,"Informational,refer to log"},
-  {0x6B,0x00,A,"State change has occurred"},
-  {0x6B,0x01,A,"Redundancy level got better"},
-  {0x6B,0x02,A,"Redundancy level got worse"},
-  {0x6C,0x00,A,"Rebuild failure occurred"},
-  {0x6D,0x00,A,"Recalculate failure occurred"},
-  {0x6E,0x00,A,"Command to logical unit failed"},
-  {0x6F,0x00,R,"Copy protection key exchange failure - authentication failure"},
-  {0x6F,0x01,R,"Copy protection key exchange failure - key not present"},
-  {0x6F,0x02,R,"Copy protection key exchange failure - key not established"},
-  {0x6F,0x03,R,"Read of scrambled sector without authentication"},
-  {0x6F,0x04,R,"Media region code is mismatched to logical unit region"},
-  {0x6F,0x05,R,"Drive region must be permanent/region reset count error"},
-  /*
-   * FIXME(eric) - need a way to represent wildcards here.
-   */
-  {0x70,0x00,T,"Decompression exception short algorithm id of nn"},
-  {0x71,0x00,T,"Decompression exception long algorithm id"},
-  {0x72,0x00,R,"Session fixation error"},
-  {0x72,0x01,R,"Session fixation error writing lead-in"},
-  {0x72,0x02,R,"Session fixation error writing lead-out"},
-  {0x72,0x03,R,"Session fixation error - incomplete track in session"},
-  {0x72,0x04,R,"Empty or partially written reserved track"},
-  {0x72,0x05,R,"No more track reservations allowed"},
-  {0x73,0x00,R,"Cd control error"},
-  {0x73,0x01,R,"Power calibration area almost full"},
-  {0x73,0x02,R,"Power calibration area is full"},
-  {0x73,0x03,R,"Power calibration area error"},
-  {0x73,0x04,R,"Program memory area update failure"},
-  {0x73,0x05,R,"Program memory area is full"},
-  {0x73,0x06,R,"RMA/PMA is full"},
-  {0, 0, 0, NULL}
-};
-
-static const char * sc_oft_used[0x1f] = {
-        "umulig",                       /* index 0x0 should be impossible */
-        "Audio play operation ",
-        "Logical unit ",
-        "not ready, ",
-        " operation",
-        " in progress ",
-        "Hardware impending failure ",
-        "Controller impending failure ",
-        "Data channel impending failure ",      /* index 0x8 */
-        "Servo impending failure ",
-        "Spindle impending failure ",
-        "Firmware impending failure ",
-        "Recovered data ",
-        " error rate too high",
-        " times too high",
-};
-
-static const char *snstext[] = {
-    "No Sense",                 /* There is no sense information */
-    "Recovered Error",          /* The last command completed successfully
-                                   but used error correction */
-    "Not Ready",                /* The addressed target is not ready */
-    "Medium Error",             /* Data error detected on the medium */
-    "Hardware Error",           /* Controller or device failure */
-    "Illegal Request",
-    "Unit Attention",           /* Removable medium was changed, or
-                                   the target has been reset */
-    "Data Protect",             /* Access to the data is blocked */
-    "Blank Check",              /* Reached unexpected written or unwritten
-                                   region of the medium */
-    "Key=9",                    /* Vendor specific */
-    "Copy Aborted",             /* COPY or COMPARE was aborted */
-    "Aborted Command",          /* The target aborted the command */
-    "Equal",                    /* SEARCH DATA found data equal (obsolete) */
-    "Volume Overflow",          /* Medium full with still data to be written */
-    "Miscompare",               /* Source data and data on the medium
-                                   do not agree */
-    "Key=15"                    /* Reserved */
-};
-
-static
-void sg_print_asc_ascq(unsigned char asc, unsigned char ascq)
-{
-    int k, j;
-    char obuff[256];
-    const char * ccp;
-    const char * oup;
-    char c;
-    int found = 0;
-
-    for (k=0; additional[k].text; k++) {
-        if (additional[k].code1 == asc &&
-            additional[k].code2 == ascq) {
-            found = 1;
-            ccp = additional[k].text;
-            for (j = 0; *ccp && (j < sizeof(obuff)); ++ccp) {
-                c = *ccp;
-                if ((c < 0x20) && (c > 0)) {
-                    oup = sc_oft_used[(int)c];
-                    if (oup) {
-                        strcpy(obuff + j, oup);
-                        j += strlen(oup);
-                    }
-                    else {
-                        strcpy(obuff + j, "???");
-                        j += 3;
-                    }
-                }
-                else
-                    obuff[j++] = c;
-            }
-            if (j < sizeof(obuff))
-                obuff[j] = '\0';
-            else
-                obuff[sizeof(obuff) - 1] = '\0';
-            fprintf(OUTP, "Additional sense: %s\n", obuff);
-        }
-    }
-    if (found)
-        return;
-
-    for(k=0; additional2[k].text; k++) {
-        if ((additional2[k].code1 == asc) &&
-            (ascq >= additional2[k].code2_min)  &&
-            (ascq <= additional2[k].code2_max)) {
-            found = 1;
-            fprintf(OUTP, "Additional sense: ");
-            fprintf(OUTP, additional2[k].text, ascq);
-            fprintf(OUTP, "\n");
-        }
-    }
-    if (! found)
-        fprintf(OUTP, "ASC=%2x ASCQ=%2x\n", asc, ascq);
-}
-
-/* Print sense information */
-void sg_print_sense(const char * leadin, const unsigned char * sense_buffer,
-                    int sb_len)
-{
-    int k, s;
-    int sense_key, sense_class, valid, code;
-    int descriptor_format = 0;
-    const char * error = NULL;
-
-    if (sb_len < 1) {
-            fprintf(OUTP, "sense buffer empty\n");
-            return;
-    }
-    sense_class = (sense_buffer[0] >> 4) & 0x07;
-    code = sense_buffer[0] & 0xf;
-    valid = sense_buffer[0] & 0x80;
-    if (leadin)
-        fprintf(OUTP, "%s: ", leadin);
-
-    if (sense_class == 7) {     /* extended sense data */
-        s = sense_buffer[7] + 8;
-        if(s > sb_len)  /* device has more available which we ignore */
-            s = sb_len;
-
-        switch (code) {
-        case 0x0:
-            error = "Current";  /* error concerns current command */
-            break;
-        case 0x1:
-            error = "Deferred"; /* error concerns some earlier command */
-                /* e.g., an earlier write to disk cache succeeded, but
-                   now the disk discovers that it cannot write the data */
-            break;
-        case 0x2:
-            descriptor_format = 1;
-            error = "Descriptor current";
-            /* new descriptor sense format */
-            break;
-        case 0x3:
-            descriptor_format = 1;
-            error = "Descriptor deferred";
-            /* new descriptor sense format (deferred report) */
-            break;
-        default:
-            error = "Invalid";
-        }
-        sense_key = sense_buffer[ descriptor_format ? 1 : 2 ] & 0xf;
-        fprintf(OUTP, "%s, Sense key: %s\n", error, snstext[sense_key]);
-
-        if (descriptor_format)
-            sg_print_asc_ascq(sense_buffer[2], sense_buffer[3]);
-        else {
-            if (!valid)
-                fprintf(OUTP, "[valid=0] ");
-            fprintf(OUTP, "Info fld=0x%x, ", (int)((sense_buffer[3] << 24) |
-                    (sense_buffer[4] << 16) | (sense_buffer[5] << 8) |
-                    sense_buffer[6]));
-
-            if (sense_buffer[2] & 0x80)
-               fprintf(OUTP, "FMK "); /* current command has read a filemark */
-            if (sense_buffer[2] & 0x40)
-               fprintf(OUTP, "EOM "); /* end-of-medium condition exists */
-            if (sense_buffer[2] & 0x20)
-               fprintf(OUTP, "ILI "); /* incorrect block length requested */
-
-            if (s > 13) {
-                if (sense_buffer[12] || sense_buffer[13])
-                    sg_print_asc_ascq(sense_buffer[12], sense_buffer[13]);
-            }
-            if (sense_key == 5 && s >= 18 && (sense_buffer[15]&0x80)) {
-                fprintf(OUTP, "Sense Key Specific: Error in %s byte %d",
-                        (sense_buffer[15]&0x40)?"Command":"Data",
-                        (sense_buffer[16]<<8)|sense_buffer[17]);
-                if(sense_buffer[15]&0x08) {
-                    fprintf(OUTP, " bit %d\n", sense_buffer[15]&0x07);
-                } else {
-                    fprintf(OUTP, "\n");
-                }
-            }
-        }
-
-    } else {    /* non-extended sense data */
-
-         /*
-          * Standard says:
-          *    sense_buffer[0] & 0200 : address valid
-          *    sense_buffer[0] & 0177 : vendor-specific error code
-          *    sense_buffer[1] & 0340 : vendor-specific
-          *    sense_buffer[1..3] : 21-bit logical block address
-          */
-
-        if (sb_len < 4) {
-            fprintf(OUTP, "sense buffer too short (4 byte minimum)\n");
-            return;
-        }
-        if (leadin)
-            fprintf(OUTP, "%s: ", leadin);
-        if (sense_buffer[0] < 15)
-            fprintf(OUTP, 
-                    "old sense: key %s\n", snstext[sense_buffer[0] & 0x0f]);
-        else
-            fprintf(OUTP, "sns = %2x %2x\n", sense_buffer[0], sense_buffer[2]);
-
-        fprintf(OUTP, "Non-extended sense class %d code 0x%0x ", 
-                sense_class, code);
-        s = 4;
-    }
-
-    fprintf(OUTP, "Raw sense data (in hex):\n  ");
-    for (k = 0; k < s; ++k) {
-        if ((k > 0) && (0 == (k % 24)))
-            fprintf(OUTP, "\n  ");
-        fprintf(OUTP, "%02x ", sense_buffer[k]);
-    }
-    fprintf(OUTP, "\n");
-}
-
-static const char * hostbyte_table[]={
-"DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET",
-"DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR",
-"DID_PASSTHROUGH", "DID_SOFT_ERROR", NULL};
-
-void sg_print_host_status(int host_status)
-{   static int maxcode=0;
-    int i;
-
-    if(! maxcode) {
-        for(i = 0; hostbyte_table[i]; i++) ;
-        maxcode = i-1;
-    }
-    fprintf(OUTP, "Host_status=0x%02x", host_status);
-    if(host_status > maxcode) {
-        fprintf(OUTP, "is invalid ");
-        return;
-    }
-    fprintf(OUTP, "(%s) ",hostbyte_table[host_status]);
-}
-
-static const char * driverbyte_table[]={
-"DRIVER_OK", "DRIVER_BUSY", "DRIVER_SOFT",  "DRIVER_MEDIA", "DRIVER_ERROR",
-"DRIVER_INVALID", "DRIVER_TIMEOUT", "DRIVER_HARD", "DRIVER_SENSE", NULL};
-
-static const char * driversuggest_table[]={"SUGGEST_OK",
-"SUGGEST_RETRY", "SUGGEST_ABORT", "SUGGEST_REMAP", "SUGGEST_DIE",
-unknown,unknown,unknown, "SUGGEST_SENSE",NULL};
-
-
-void sg_print_driver_status(int driver_status)
-{
-    static int driver_max =0 , suggest_max=0;
-    int i;
-    int dr = driver_status & SG_ERR_DRIVER_MASK;
-    int su = (driver_status & SG_ERR_SUGGEST_MASK) >> 4;
-
-    if(! driver_max) {
-        for(i = 0; driverbyte_table[i]; i++) ;
-        driver_max = i;
-        for(i = 0; driversuggest_table[i]; i++) ;
-        suggest_max = i;
-    }
-    fprintf(OUTP, "Driver_status=0x%02x",driver_status);
-    fprintf(OUTP, " (%s,%s) ",
-            dr < driver_max  ? driverbyte_table[dr]:"invalid",
-            su < suggest_max ? driversuggest_table[su]:"invalid");
-}
-
-static int sg_sense_print(const char * leadin, int scsi_status,
-                          int host_status, int driver_status,
-                          const unsigned char * sense_buffer, int sb_len)
-{
-    int done_leadin = 0;
-    int done_sense = 0;
-
-    scsi_status &= 0x7e; /*sanity */
-    if ((0 == scsi_status) && (0 == host_status) &&
-        (0 == driver_status))
-        return 1;       /* No problems */
-    if (0 != scsi_status) {
-        if (leadin)
-            fprintf(OUTP, "%s: ", leadin);
-        done_leadin = 1;
-        fprintf(OUTP, "scsi status: ");
-        sg_print_scsi_status(scsi_status);
-        fprintf(OUTP, "\n");
-        if (sense_buffer && ((scsi_status == SCSI_CHECK_CONDITION) ||
-                             (scsi_status == SCSI_COMMAND_TERMINATED))) {
-            sg_print_sense(0, sense_buffer, sb_len);
-            done_sense = 1;
-        }
-    }
-    if (0 != host_status) {
-        if (leadin && (! done_leadin))
-            fprintf(OUTP, "%s: ", leadin);
-        if (done_leadin)
-            fprintf(OUTP, "plus...: ");
-        else
-            done_leadin = 1;
-        sg_print_host_status(host_status);
-        fprintf(OUTP, "\n");
-    }
-    if (0 != driver_status) {
-        if (leadin && (! done_leadin))
-            fprintf(OUTP, "%s: ", leadin);
-        if (done_leadin)
-            fprintf(OUTP, "plus...: ");
-        else
-            done_leadin = 1;
-        sg_print_driver_status(driver_status);
-        fprintf(OUTP, "\n");
-        if (sense_buffer && (! done_sense) &&
-            (SG_ERR_DRIVER_SENSE == (0xf & driver_status)))
-            sg_print_sense(0, sense_buffer, sb_len);
-    }
-    return 0;
-}
-
-#ifdef SG_IO
-int sg_chk_n_print3(const char * leadin, struct sg_io_hdr * hp)
-{
-    return sg_sense_print(leadin, hp->status, hp->host_status,
-                          hp->driver_status, hp->sbp, hp->sb_len_wr);
-}
-#endif
-
-int sg_chk_n_print(const char * leadin, int masked_status,
-                   int host_status, int driver_status,
-                   const unsigned char * sense_buffer, int sb_len)
-{
-    int scsi_status = (masked_status << 1) & 0x7e;
-
-    return sg_sense_print(leadin, scsi_status, host_status, driver_status,
-                          sense_buffer, sb_len);
-}
-
-#ifdef SG_IO
-int sg_err_category3(struct sg_io_hdr * hp)
-{
-    return sg_err_category_new(hp->status, hp->host_status,
-                               hp->driver_status, hp->sbp, hp->sb_len_wr);
-}
-#endif
-
-int sg_err_category(int masked_status, int host_status,
-                    int driver_status, const unsigned char * sense_buffer,
-                    int sb_len)
-{
-    int scsi_status = (masked_status << 1) & 0x7e;
-
-    return sg_err_category_new(scsi_status, host_status, driver_status,
-                               sense_buffer, sb_len);
-}
-
-int sg_err_category_new(int scsi_status, int host_status, int driver_status, 
-                        const unsigned char * sense_buffer, int sb_len)
-{
-    scsi_status &= 0x7e;
-    if ((0 == scsi_status) && (0 == host_status) &&
-        (0 == driver_status))
-        return SG_ERR_CAT_CLEAN;
-    if ((SCSI_CHECK_CONDITION == scsi_status) ||
-        (SCSI_COMMAND_TERMINATED == scsi_status) ||
-        (SG_ERR_DRIVER_SENSE == (0xf & driver_status))) {
-        if (sense_buffer && (sb_len > 2)) {
-            int sense_key;
-            unsigned char asc;
-
-            if (sense_buffer[0] & 0x2) {
-                sense_key = sense_buffer[1] & 0xf;
-                asc = sense_buffer[2];
-            }
-            else {
-                sense_key = sense_buffer[2] & 0xf;
-                asc = (sb_len > 12) ? sense_buffer[12] : 0;
-            }
-
-            if(RECOVERED_ERROR == sense_key)
-                return SG_ERR_CAT_RECOVERED;
-            else if (UNIT_ATTENTION == sense_key) {
-                if (0x28 == asc)
-                    return SG_ERR_CAT_MEDIA_CHANGED;
-                if (0x29 == asc)
-                    return SG_ERR_CAT_RESET;
-            }
-        }
-        return SG_ERR_CAT_SENSE;
-    }
-    if (0 != host_status) {
-        if ((SG_ERR_DID_NO_CONNECT == host_status) ||
-            (SG_ERR_DID_BUS_BUSY == host_status) ||
-            (SG_ERR_DID_TIME_OUT == host_status))
-            return SG_ERR_CAT_TIMEOUT;
-    }
-    if (0 != driver_status) {
-        if (SG_ERR_DRIVER_TIMEOUT == driver_status)
-            return SG_ERR_CAT_TIMEOUT;
-    }
-    return SG_ERR_CAT_OTHER;
-}
-
-int sg_get_command_size(unsigned char opcode)
-{
-    return COMMAND_SIZE(opcode);
-}
-
-void sg_get_command_name(unsigned char opcode, int buff_len, char * buff)
-{
-    const char **table = commands[ group(opcode) ];
-
-    if ((NULL == buff) || (buff_len < 1))
-        return;
-
-    switch ((unsigned long) table) {
-    case RESERVED_GROUP:
-        strncpy(buff, reserved, buff_len);
-        break;
-    case VENDOR_GROUP:
-        strncpy(buff, vendor, buff_len);
-        break;
-    default:
-        strncpy(buff, table[opcode & 0x1f], buff_len);
-        break;
-    }
-}