Here's a patch updating udev's copy of scsi_id to version 0.6.
+2004-jul-30:
+ * scsi_id.c, scsi_serial.c: Align the buffer passed to scsi_serial,
+ don't bother aligning and memcpy-ing the result in scsi_inquiry.
+ Aligning to 512 probably does not help, since the IO length of
+ 254 is not a multiple of 512.
+
+2004-jul-30:
+ * scsi.h, scsi_serial.c: Use a define for the SCSI INQUIRY buffer
+ length.
+
+2004-jul-30:
+ * scsi_id.c: Patch from <christophe.varoqui@free.fr> add a -u flag
+ to substitute white space with underscores so it is easier to use
+ the output as a device name.
+
+2004-jul-30:
+ * scsi_serial.c: Patch from Hannes Reinecke <hare@suse.de> use 254
+ bytes for SCSI INQUIRY commands.
+
+2004-jul-28:
+ * scsi_id.h, scsi_serial.c: get rid of dumb/dead code, and use a
+ 512 byte aligned buffer.
+
2004-jun-23:
* scsi_id.h: increase MAX_SERIAL_LEN from 128 to 256, as some
devices (maybe broken ones) are giving really long id's.
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-SCSI_ID_VERSION=0.5
+SCSI_ID_VERSION=0.6
prefix =
etcdir = ${prefix}/etc
-- Add an option to replace blanks with spaces, so the generated id can be
- more easily used as a /dev name.
-
- Add a bus white/black list option. So for example, all scsi devices
under USB could easily be blacklisted. This should allow multiple busses
to be listed.
-Version 0.5 of scsi_id is available at:
+Version 0.6 of scsi_id is available at:
-http://www-124.ibm.com/storageio/scsi_id/scsi_id-0.5.tar.gz
+http://www-124.ibm.com/storageio/scsi_id/scsi_id-0.6.tar.gz
scsi_id is a program to generate a unique identifier for a given SCSI
device.
want persistent naming of scsi devices. It could also be used for
automatic multi-path configuration or device mapper configuration.
-Version 0.5 requires:
+Requires:
- Linux kernel 2.6
- libsysfs 0.4.0
Major changes since the last release:
+
+ - add -u option, patch from Christoph Varoqui, to substitute white
+ space with underscores so it is easier to use the output as a
+ device name.
- - Ken Brush <ken@cgi101.com> have the command line options
- override generic options.
+ - Use 254 bytes for SCSI INQUIRY commands, patch from Hannes
+ Reinecke.
- - Fix the gen_scsi_id_udev_rules.sh to handle spaces in the id.
-
- - Don't supply a makedev() when built with klibc. Also, the
- scsi_id supplied makedev() was using the old major/minor method.
-
- - Include compiler.h so we can build against klibc, as recent sg.h
- changes need a define for __user.
-
-Other changes:
-
- - Increase the MAX_SERIAL_LEN from 128 to 256, as some (possibly
- broken devics) are returning very long id's
-
- - Add spotless target (via Olaf Hering's udev patch)
-
- - minor wording changes in scsi_id.config
-
- - Log INQUIRY failure, including the failing page code and vpd
- values
-
- - Escape '-' with '\-' in the man page.
+See ChangeLog for more details.
#define SENSE_BUFF_LEN 32
+/*
+ * The request buffer size passed to the SCSI INQUIRY commands, use 254,
+ * as this is a nice value for some devices, especially some of the usb
+ * mass storage devices.
+ */
+#define SCSI_INQ_BUFF_LEN 254
+
/*
* SCSI INQUIRY vendor and model (really product) lengths.
*/
The sysfs mount point must not be included. For example, use /block/sd,
not /sys/block/sd.
.TP
+.BI \-u
+Reformat the output : replace all whitespaces by underscores
+.TP
.BI \-v
Generate verbose debugging output.
.TP
* options are not supported, but other code is still left in place for
* now.
*/
-static const char short_options[] = "bd:f:gip:s:vV";
+static const char short_options[] = "bd:f:gip:s:uvV";
/*
* Just duplicate per dev options.
*/
static int use_stderr;
static int debug;
static int hotplug_mode;
+static int reformat_serial;
void log_message (int level, const char *format, ...)
{
strncat(target, optarg, MAX_NAME_LEN);
break;
+ case 'u':
+ reformat_serial = 1;
+ break;
+
case 'v':
debug++;
break;
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;
+
+ while (*p != '\0') {
+ if (isspace(*p))
+ *p = '_';
+ p++;
+ }
+ return;
+}
+
/*
* 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
{
int retval;
int dev_type = 0;
- char serial[MAX_SERIAL_LEN];
+ char *serial, *unaligned_buf;
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 */
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*) (((int) unaligned_buf + (ALIGN - 1)) & ~(ALIGN - 1));
+ dprintf("buffer unaligned 0x%p; aligned 0x%p\n", unaligned_buf, serial);
+#undef ALIGN
+
if (!good_dev) {
retval = 1;
} else if (callout[0] != '\0') {
retval = 0;
}
if (!retval) {
+ if (reformat_serial)
+ format_serial(serial);
if (display_bus_id)
printf("%s: ", scsi_dev->name);
printf("%s", serial);
log_message(LOG_DEBUG, "%s: " format, __FUNCTION__ , ## arg)
#define MAX_NAME_LEN 72
-#define OFFSET (2 * sizeof(unsigned int))
/*
* MAX_ATTR_LEN: maximum length of the result of reading a sysfs
unsigned char sense[SENSE_BUFF_LEN];
struct sg_io_hdr io_hdr;
int retval;
- unsigned char *inq;
- unsigned char *buffer;
int retry = 3; /* rather random */
- if (buflen > 255) {
+ if (buflen > SCSI_INQ_BUFF_LEN) {
log_message(LOG_WARNING, "buflen %d too long\n", buflen);
return -1;
}
- inq = malloc(OFFSET + sizeof (inq_cmd) + 512);
- memset(inq, 0, OFFSET + sizeof (inq_cmd) + 512);
- buffer = inq + OFFSET;
resend:
dprintf("%s evpd %d, page 0x%x\n", scsi_dev->name, evpd, page);
io_hdr.mx_sb_len = sizeof(sense);
io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
io_hdr.dxfer_len = buflen;
- io_hdr.dxferp = buffer;
+ io_hdr.dxferp = buf;
io_hdr.cmdp = inq_cmd;
io_hdr.sbp = sense;
io_hdr.timeout = DEF_TIMEOUT;
if (ioctl(fd, SG_IO, &io_hdr) < 0) {
log_message(LOG_WARNING, "%s: ioctl failed: %s\n",
scsi_dev->name, strerror(errno));
- return -1;
+ retval = -1;
+ goto error;
}
retval = sg_err_category3(&io_hdr);
if (!retval) {
retval = buflen;
- memcpy(buf, buffer, retval);
} else if (retval > 0) {
if (--retry > 0) {
dprintf("%s: Retrying ...\n", scsi_dev->name);
retval = -1;
}
+error:
if (retval < 0)
log_message(LOG_WARNING,
"%s: Unable to get INQUIRY vpd %d page 0x%x.\n",
scsi_dev->name, evpd, page);
- free(inq);
return retval;
}
+/* Get list of supported EVPD pages */
static int do_scsi_page0_inquiry(struct sysfs_device *scsi_dev, int fd,
char *buffer, int len)
{
return 0;
}
+/* Get device identification VPD page */
static int do_scsi_page83_inquiry(struct sysfs_device *scsi_dev, int fd,
char *serial, int len)
{
int retval;
int id_ind, j;
- unsigned char page_83[256];
+ unsigned char page_83[SCSI_INQ_BUFF_LEN];
- memset(page_83, 0, 256);
- retval = scsi_inquiry(scsi_dev, fd, 1, 0x83, page_83, 255);
+ memset(page_83, 0, SCSI_INQ_BUFF_LEN);
+ retval = scsi_inquiry(scsi_dev, fd, 1, 0x83, page_83,
+ SCSI_INQ_BUFF_LEN);
if (retval < 0)
return 1;
return 1;
}
+/* Get unit serial number VPD page */
static int do_scsi_page80_inquiry(struct sysfs_device *scsi_dev, int fd,
char *serial, int max_len)
{
int ser_ind;
int i;
int len;
- unsigned char buf[256];
+ unsigned char buf[SCSI_INQ_BUFF_LEN];
- memset(buf, 0, 256);
- retval = scsi_inquiry(scsi_dev, fd, 1, 0x80, buf, 255);
+ memset(buf, 0, SCSI_INQ_BUFF_LEN);
+ retval = scsi_inquiry(scsi_dev, fd, 1, 0x80, buf, SCSI_INQ_BUFF_LEN);
if (retval < 0)
return retval;
int scsi_get_serial (struct sysfs_device *scsi_dev, const char *devname,
int page_code, char *serial, int len)
{
- unsigned char page0[256];
+ unsigned char page0[SCSI_INQ_BUFF_LEN];
int fd;
int ind;
int retval;
- if (len > 255) {
- }
memset(serial, 0, len);
dprintf("opening %s\n", devname);
fd = open(devname, O_RDONLY | O_NONBLOCK);
* Get page 0, the page of the pages. By default, try from best to
* worst of supported pages: 0x83 then 0x80.
*/
- if (do_scsi_page0_inquiry(scsi_dev, fd, page0, 255)) {
+ if (do_scsi_page0_inquiry(scsi_dev, fd, page0, SCSI_INQ_BUFF_LEN)) {
/*
* Don't try anything else. Black list if a specific page
* should be used for this vendor+model, or maybe have an
projects / systemd / commitdiff