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systemd/1066-udev-add-compatibility-links-for-truncated-by-id-links.patch

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From: Jeff Mahoney <jeffm@suse.com>
Subject: udev: add option to generate old 'buggy' serials
References: bnc#886852
Prior to udev 184, scsi_id would truncate the last character of the model
string when generating the ID_SERIAL value. If a system was installed
prior to that fix being available in udev, there may be configuration
information that refers to the truncated link.
This patch adds a --truncated-serial option and a udev rule will created
the old truncated links.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
rules/60-persistent-storage.rules | 4 ++++
src/udev/scsi_id/scsi_id.c | 15 ++++++++++++++-
src/udev/scsi_id/scsi_id.h | 1 +
src/udev/scsi_id/scsi_serial.c | 19 +++++++++++++------
4 files changed, 32 insertions(+), 7 deletions(-)
--- a/rules/60-persistent-storage.rules
+++ b/rules/60-persistent-storage.rules
@@ -46,6 +46,10 @@ KERNEL=="sd*|cciss*", ENV{DEVTYPE}=="par
KERNEL=="sd*[!0-9]", ENV{ID_BUS}=="ata", PROGRAM="scsi_id --whitelisted --replace-whitespace -p0x80 -d $devnode", RESULT=="?*", ENV{ID_SCSI_COMPAT}="$result", SYMLINK+="disk/by-id/scsi-$env{ID_SCSI_COMPAT}"
KERNEL=="sd*[0-9]", ENV{ID_SCSI_COMPAT}=="?*", SYMLINK+="disk/by-id/scsi-$env{ID_SCSI_COMPAT}-part%n"
+# scsi compat links for ATA devices (for compatibility with udev < 184)
+KERNEL=="sd*[!0-9]", ENV{ID_BUS}=="ata", PROGRAM="scsi_id --truncated-serial --whitelisted --replace-whitespace -p0x80 -d$tempnode", RESULT=="?*", ENV{ID_SCSI_COMPAT_TRUNCATED}="$result", SYMLINK+="disk/by-id/scsi-$env{ID_SCSI_COMPAT_TRUNCATED}"
+KERNEL=="sd*[0-9]", ENV{ID_SCSI_COMPAT_TRUNCATED}=="?*", SYMLINK+="disk/by-id/scsi-$env{ID_SCSI_COMPAT_TRUNCATED}-part%n"
+
# firewire
KERNEL=="sd*[!0-9]|sr*", ATTRS{ieee1394_id}=="?*", SYMLINK+="disk/by-id/ieee1394-$attr{ieee1394_id}"
KERNEL=="sd*[0-9]", ATTRS{ieee1394_id}=="?*", SYMLINK+="disk/by-id/ieee1394-$attr{ieee1394_id}-part%n"
--- a/src/udev/scsi_id/scsi_id.c
+++ b/src/udev/scsi_id/scsi_id.c
@@ -44,6 +44,7 @@ static const struct option options[] = {
{ "replace-whitespace", no_argument, NULL, 'u' },
{ "sg-version", required_argument, NULL, 's' },
{ "verbose", no_argument, NULL, 'v' },
+ { "truncated-serial", no_argument, NULL, '9' },
{ "version", no_argument, NULL, 'V' }, /* don't advertise -V */
{ "export", no_argument, NULL, 'x' },
{ "help", no_argument, NULL, 'h' },
@@ -56,6 +57,7 @@ static char config_file[MAX_PATH_LEN] =
static enum page_code default_page_code = PAGE_UNSPECIFIED;
static int sg_version = 4;
static int debug = 0;
+static bool compat_truncated = false;
static bool reformat_serial = false;
static bool export = false;
static char vendor_str[64];
@@ -323,6 +325,7 @@ static void help(void) {
" -g,--whitelisted threat device as whitelisted\n"
" -u,--replace-whitespace replace all whitespace by underscores\n"
" -v,--verbose verbose logging\n"
+ " --truncated-serial truncated serial for compatibility with systems configured with by-id links created by udev < 184\n"
" --version print version\n"
" -x,--export print values as environment keys\n"
" -h,--help print this help text\n\n");
@@ -393,6 +396,10 @@ static int set_options(struct udev *udev
debug++;
break;
+ case '9':
+ compat_truncated = true;
+ break;
+
case 'V':
printf("%s\n", VERSION);
exit(0);
@@ -535,6 +542,9 @@ static int scsi_id(struct udev *udev, ch
util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
util_replace_chars(serial_str, NULL);
printf("ID_SERIAL=%s\n", serial_str);
+ util_replace_whitespace(dev_scsi.serial_compat, serial_str, sizeof(serial_str));
+ util_replace_chars(serial_str, NULL);
+ printf("ID_SERIAL_COMPAT=%s\n", serial_str);
util_replace_whitespace(dev_scsi.serial_short, serial_str, sizeof(serial_str));
util_replace_chars(serial_str, NULL);
printf("ID_SERIAL_SHORT=%s\n", serial_str);
@@ -565,7 +575,10 @@ static int scsi_id(struct udev *udev, ch
if (reformat_serial) {
char serial_str[MAX_SERIAL_LEN];
- util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
+ if (compat_truncated)
+ util_replace_whitespace(dev_scsi.serial_compat, serial_str, sizeof(serial_str));
+ else
+ util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
util_replace_chars(serial_str, NULL);
printf("%s\n", serial_str);
goto out;
--- a/src/udev/scsi_id/scsi_id.h
+++ b/src/udev/scsi_id/scsi_id.h
@@ -43,6 +43,7 @@ struct scsi_id_device {
char kernel[64];
char serial[MAX_SERIAL_LEN];
char serial_short[MAX_SERIAL_LEN];
+ char serial_compat[MAX_SERIAL_LEN];
int use_sg;
/* Always from page 0x80 e.g. 'B3G1P8500RWT' - may not be unique */
--- a/src/udev/scsi_id/scsi_serial.c
+++ b/src/udev/scsi_id/scsi_serial.c
@@ -97,7 +97,8 @@ static const char hex_str[]="0123456789a
static int do_scsi_page80_inquiry(struct udev *udev,
struct scsi_id_device *dev_scsi, int fd,
- char *serial, char *serial_short, int max_len);
+ char *serial, char *serial_short,
+ char *serial_compat, int max_len);
static int sg_err_category_new(struct udev *udev,
int scsi_status, int msg_status, int
@@ -620,7 +621,7 @@ static int do_scsi_page83_inquiry(struct
unsigned char page_83[SCSI_INQ_BUFF_LEN];
/* also pick up the page 80 serial number */
- do_scsi_page80_inquiry(udev, dev_scsi, fd, NULL, unit_serial_number, MAX_SERIAL_LEN);
+ do_scsi_page80_inquiry(udev, dev_scsi, fd, NULL, unit_serial_number, NULL, MAX_SERIAL_LEN);
memzero(page_83, SCSI_INQ_BUFF_LEN);
retval = scsi_inquiry(udev, dev_scsi, fd, 1, PAGE_83, page_83,
@@ -765,7 +766,8 @@ static int do_scsi_page83_prespc3_inquir
/* Get unit serial number VPD page */
static int do_scsi_page80_inquiry(struct udev *udev,
struct scsi_id_device *dev_scsi, int fd,
- char *serial, char *serial_short, int max_len)
+ char *serial, char *serial_short,
+ char *serial_compat, int max_len)
{
int retval;
int ser_ind;
@@ -799,9 +801,14 @@ static int do_scsi_page80_inquiry(struct
ser_ind = prepend_vendor_model(udev, dev_scsi, &serial[1]);
if (ser_ind < 0)
return 1;
+ if (serial_compat)
+ strcpy(serial_compat, serial);
ser_ind++; /* for the leading 'S' */
- for (i = 4; i < len + 4; i++, ser_ind++)
+ for (i = 4; i < len + 4; i++, ser_ind++) {
serial[ser_ind] = buf[i];
+ if (serial_compat)
+ serial_compat[ser_ind - 1] = buf[i];
+ }
}
if (serial_short != NULL) {
memcpy(serial_short, &buf[4], len);
@@ -877,7 +884,7 @@ int scsi_get_serial(struct udev *udev,
return 1;
if (page_code == PAGE_80) {
- if (do_scsi_page80_inquiry(udev, dev_scsi, fd, dev_scsi->serial, dev_scsi->serial_short, len)) {
+ if (do_scsi_page80_inquiry(udev, dev_scsi, fd, dev_scsi->serial, dev_scsi->serial_short, dev_scsi->serial_compat, len)) {
retval = 1;
goto completed;
} else {
@@ -951,7 +958,7 @@ int scsi_get_serial(struct udev *udev,
for (ind = 4; ind <= page0[3] + 3; ind++)
if (page0[ind] == PAGE_80)
if (!do_scsi_page80_inquiry(udev, dev_scsi, fd,
- dev_scsi->serial, dev_scsi->serial_short, len)) {
+ dev_scsi->serial, dev_scsi->serial_short, dev_scsi->serial_compat, len)) {
/*
* Success
*/
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