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Diffstat (limited to 'src/grp-udev/scsi_id/scsi_id.c')
-rw-r--r--src/grp-udev/scsi_id/scsi_id.c626
1 files changed, 626 insertions, 0 deletions
diff --git a/src/grp-udev/scsi_id/scsi_id.c b/src/grp-udev/scsi_id/scsi_id.c
new file mode 100644
index 0000000000..30611137d5
--- /dev/null
+++ b/src/grp-udev/scsi_id/scsi_id.c
@@ -0,0 +1,626 @@
+/*
+ * Copyright (C) IBM Corp. 2003
+ * Copyright (C) SUSE Linux Products GmbH, 2006
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <libudev.h>
+
+#include "libudev-private.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-shared/udev-util.h"
+
+#include "scsi_id.h"
+
+static const struct option options[] = {
+ { "device", required_argument, NULL, 'd' },
+ { "config", required_argument, NULL, 'f' },
+ { "page", required_argument, NULL, 'p' },
+ { "blacklisted", no_argument, NULL, 'b' },
+ { "whitelisted", no_argument, NULL, 'g' },
+ { "replace-whitespace", no_argument, NULL, 'u' },
+ { "sg-version", required_argument, NULL, 's' },
+ { "verbose", no_argument, NULL, 'v' },
+ { "version", no_argument, NULL, 'V' }, /* don't advertise -V */
+ { "export", no_argument, NULL, 'x' },
+ { "help", no_argument, NULL, 'h' },
+ {}
+};
+
+static bool all_good = false;
+static bool dev_specified = false;
+static char config_file[MAX_PATH_LEN] = "/etc/scsi_id.config";
+static enum page_code default_page_code = PAGE_UNSPECIFIED;
+static int sg_version = 4;
+static bool reformat_serial = false;
+static bool export = false;
+static char vendor_str[64];
+static char model_str[64];
+static char vendor_enc_str[256];
+static char model_enc_str[256];
+static char revision_str[16];
+static char type_str[16];
+
+static void set_type(const char *from, char *to, size_t len)
+{
+ int type_num;
+ char *eptr;
+ const char *type = "generic";
+
+ type_num = strtoul(from, &eptr, 0);
+ if (eptr != from) {
+ switch (type_num) {
+ case 0:
+ type = "disk";
+ break;
+ case 1:
+ type = "tape";
+ break;
+ case 4:
+ type = "optical";
+ break;
+ case 5:
+ type = "cd";
+ break;
+ case 7:
+ type = "optical";
+ break;
+ case 0xe:
+ type = "disk";
+ break;
+ case 0xf:
+ type = "optical";
+ break;
+ default:
+ break;
+ }
+ }
+ strscpy(to, len, type);
+}
+
+/*
+ * get_value:
+ *
+ * buf points to an '=' followed by a quoted string ("foo") or a string ending
+ * with a space or ','.
+ *
+ * Return a pointer to the NUL terminated string, returns NULL if no
+ * matches.
+ */
+static char *get_value(char **buffer)
+{
+ static const char *quote_string = "\"\n";
+ static const char *comma_string = ",\n";
+ char *val;
+ const char *end;
+
+ if (**buffer == '"') {
+ /*
+ * skip leading quote, terminate when quote seen
+ */
+ (*buffer)++;
+ end = quote_string;
+ } else {
+ end = comma_string;
+ }
+ val = strsep(buffer, end);
+ if (val && end == quote_string)
+ /*
+ * skip trailing quote
+ */
+ (*buffer)++;
+
+ while (isspace(**buffer))
+ (*buffer)++;
+
+ return val;
+}
+
+static int argc_count(char *opts)
+{
+ int i = 0;
+ while (*opts != '\0')
+ if (*opts++ == ' ')
+ i++;
+ return i;
+}
+
+/*
+ * get_file_options:
+ *
+ * If vendor == NULL, find a line in the config file with only "OPTIONS=";
+ * if vendor and model are set find the first OPTIONS line in the config
+ * file that matches. Set argc and argv to match the OPTIONS string.
+ *
+ * vendor and model can end in '\n'.
+ */
+static int get_file_options(struct udev *udev,
+ const char *vendor, const char *model,
+ int *argc, char ***newargv)
+{
+ char *buffer;
+ _cleanup_fclose_ FILE *f;
+ char *buf;
+ char *str1;
+ char *vendor_in, *model_in, *options_in; /* read in from file */
+ int lineno;
+ int c;
+ int retval = 0;
+
+ f = fopen(config_file, "re");
+ if (f == NULL) {
+ if (errno == ENOENT)
+ return 1;
+ else {
+ log_error_errno(errno, "can't open %s: %m", config_file);
+ return -1;
+ }
+ }
+
+ /*
+ * Allocate a buffer rather than put it on the stack so we can
+ * keep it around to parse any options (any allocated newargv
+ * points into this buffer for its strings).
+ */
+ buffer = malloc(MAX_BUFFER_LEN);
+ if (!buffer)
+ return log_oom();
+
+ *newargv = NULL;
+ lineno = 0;
+ for (;;) {
+ vendor_in = model_in = options_in = NULL;
+
+ buf = fgets(buffer, MAX_BUFFER_LEN, f);
+ if (buf == NULL)
+ break;
+ lineno++;
+ if (buf[strlen(buffer) - 1] != '\n') {
+ log_error("Config file line %d too long", lineno);
+ break;
+ }
+
+ while (isspace(*buf))
+ buf++;
+
+ /* blank or all whitespace line */
+ if (*buf == '\0')
+ continue;
+
+ /* comment line */
+ if (*buf == '#')
+ continue;
+
+ str1 = strsep(&buf, "=");
+ if (str1 && strcaseeq(str1, "VENDOR")) {
+ str1 = get_value(&buf);
+ if (!str1) {
+ retval = log_oom();
+ break;
+ }
+ vendor_in = str1;
+
+ str1 = strsep(&buf, "=");
+ if (str1 && strcaseeq(str1, "MODEL")) {
+ str1 = get_value(&buf);
+ if (!str1) {
+ retval = log_oom();
+ break;
+ }
+ model_in = str1;
+ str1 = strsep(&buf, "=");
+ }
+ }
+
+ if (str1 && strcaseeq(str1, "OPTIONS")) {
+ str1 = get_value(&buf);
+ if (!str1) {
+ retval = log_oom();
+ break;
+ }
+ options_in = str1;
+ }
+
+ /*
+ * Only allow: [vendor=foo[,model=bar]]options=stuff
+ */
+ if (!options_in || (!vendor_in && model_in)) {
+ log_error("Error parsing config file line %d '%s'", lineno, buffer);
+ retval = -1;
+ break;
+ }
+ if (vendor == NULL) {
+ if (vendor_in == NULL)
+ break;
+ } else if (vendor_in &&
+ strneq(vendor, vendor_in, strlen(vendor_in)) &&
+ (!model_in ||
+ (strneq(model, model_in, strlen(model_in))))) {
+ /*
+ * Matched vendor and optionally model.
+ *
+ * Note: a short vendor_in or model_in can
+ * give a partial match (that is FOO
+ * matches FOOBAR).
+ */
+ break;
+ }
+ }
+
+ if (retval == 0) {
+ if (vendor_in != NULL || model_in != NULL ||
+ options_in != NULL) {
+ /*
+ * Something matched. Allocate newargv, and store
+ * values found in options_in.
+ */
+ strcpy(buffer, options_in);
+ c = argc_count(buffer) + 2;
+ *newargv = calloc(c, sizeof(**newargv));
+ if (!*newargv)
+ retval = log_oom();
+ else {
+ *argc = c;
+ c = 0;
+ /*
+ * argv[0] at 0 is skipped by getopt, but
+ * store the buffer address there for
+ * later freeing
+ */
+ (*newargv)[c] = buffer;
+ for (c = 1; c < *argc; c++)
+ (*newargv)[c] = strsep(&buffer, " \t");
+ }
+ } else {
+ /* No matches */
+ retval = 1;
+ }
+ }
+ if (retval != 0)
+ free(buffer);
+ return retval;
+}
+
+static void help(void) {
+ printf("Usage: %s [OPTION...] DEVICE\n\n"
+ "SCSI device identification.\n\n"
+ " -h --help Print this message\n"
+ " --version Print version of the program\n\n"
+ " -d --device= Device node for SG_IO commands\n"
+ " -f --config= Location of config file\n"
+ " -p --page=0x80|0x83|pre-spc3-83 SCSI page (0x80, 0x83, pre-spc3-83)\n"
+ " -s --sg-version=3|4 Use SGv3 or SGv4\n"
+ " -b --blacklisted Treat device as blacklisted\n"
+ " -g --whitelisted Treat device as whitelisted\n"
+ " -u --replace-whitespace Replace all whitespace by underscores\n"
+ " -v --verbose Verbose logging\n"
+ " -x --export Print values as environment keys\n"
+ , program_invocation_short_name);
+
+}
+
+static int set_options(struct udev *udev,
+ int argc, char **argv,
+ char *maj_min_dev)
+{
+ int option;
+
+ /*
+ * optind is a global extern used by getopt. Since we can call
+ * set_options twice (once for command line, and once for config
+ * file) we have to reset this back to 1.
+ */
+ optind = 1;
+ while ((option = getopt_long(argc, argv, "d:f:gp:uvVxh", options, NULL)) >= 0)
+ switch (option) {
+ case 'b':
+ all_good = false;
+ break;
+
+ case 'd':
+ dev_specified = true;
+ strscpy(maj_min_dev, MAX_PATH_LEN, optarg);
+ break;
+
+ case 'f':
+ strscpy(config_file, MAX_PATH_LEN, optarg);
+ break;
+
+ case 'g':
+ all_good = true;
+ break;
+
+ case 'h':
+ help();
+ exit(0);
+
+ case 'p':
+ if (streq(optarg, "0x80"))
+ default_page_code = PAGE_80;
+ else if (streq(optarg, "0x83"))
+ default_page_code = PAGE_83;
+ else if (streq(optarg, "pre-spc3-83"))
+ default_page_code = PAGE_83_PRE_SPC3;
+ else {
+ log_error("Unknown page code '%s'", optarg);
+ return -1;
+ }
+ break;
+
+ case 's':
+ sg_version = atoi(optarg);
+ if (sg_version < 3 || sg_version > 4) {
+ log_error("Unknown SG version '%s'", optarg);
+ return -1;
+ }
+ break;
+
+ case 'u':
+ reformat_serial = true;
+ break;
+
+ case 'v':
+ log_set_target(LOG_TARGET_CONSOLE);
+ log_set_max_level(LOG_DEBUG);
+ log_open();
+ break;
+
+ case 'V':
+ printf("%s\n", VERSION);
+ exit(0);
+
+ case 'x':
+ export = true;
+ break;
+
+ case '?':
+ return -1;
+
+ default:
+ assert_not_reached("Unknown option");
+ }
+
+ if (optind < argc && !dev_specified) {
+ dev_specified = true;
+ strscpy(maj_min_dev, MAX_PATH_LEN, argv[optind]);
+ }
+
+ return 0;
+}
+
+static int per_dev_options(struct udev *udev,
+ struct scsi_id_device *dev_scsi, int *good_bad, int *page_code)
+{
+ int retval;
+ int newargc;
+ char **newargv = NULL;
+ int option;
+
+ *good_bad = all_good;
+ *page_code = default_page_code;
+
+ retval = get_file_options(udev, vendor_str, model_str, &newargc, &newargv);
+
+ optind = 1; /* reset this global extern */
+ while (retval == 0) {
+ option = getopt_long(newargc, newargv, "bgp:", options, NULL);
+ if (option == -1)
+ break;
+
+ switch (option) {
+ case 'b':
+ *good_bad = 0;
+ break;
+
+ case 'g':
+ *good_bad = 1;
+ break;
+
+ case 'p':
+ if (streq(optarg, "0x80")) {
+ *page_code = PAGE_80;
+ } else if (streq(optarg, "0x83")) {
+ *page_code = PAGE_83;
+ } else if (streq(optarg, "pre-spc3-83")) {
+ *page_code = PAGE_83_PRE_SPC3;
+ } else {
+ log_error("Unknown page code '%s'", optarg);
+ retval = -1;
+ }
+ break;
+
+ default:
+ log_error("Unknown or bad option '%c' (0x%x)", option, option);
+ retval = -1;
+ break;
+ }
+ }
+
+ if (newargv) {
+ free(newargv[0]);
+ free(newargv);
+ }
+ return retval;
+}
+
+static int set_inq_values(struct udev *udev, struct scsi_id_device *dev_scsi, const char *path)
+{
+ int retval;
+
+ dev_scsi->use_sg = sg_version;
+
+ retval = scsi_std_inquiry(udev, dev_scsi, path);
+ if (retval)
+ return retval;
+
+ udev_util_encode_string(dev_scsi->vendor, vendor_enc_str, sizeof(vendor_enc_str));
+ udev_util_encode_string(dev_scsi->model, model_enc_str, sizeof(model_enc_str));
+
+ util_replace_whitespace(dev_scsi->vendor, vendor_str, sizeof(vendor_str));
+ util_replace_chars(vendor_str, NULL);
+ util_replace_whitespace(dev_scsi->model, model_str, sizeof(model_str));
+ util_replace_chars(model_str, NULL);
+ set_type(dev_scsi->type, type_str, sizeof(type_str));
+ util_replace_whitespace(dev_scsi->revision, revision_str, sizeof(revision_str));
+ util_replace_chars(revision_str, NULL);
+ return 0;
+}
+
+/*
+ * scsi_id: try to get an id, if one is found, printf it to stdout.
+ * returns a value passed to exit() - 0 if printed an id, else 1.
+ */
+static int scsi_id(struct udev *udev, char *maj_min_dev)
+{
+ struct scsi_id_device dev_scsi = {};
+ int good_dev;
+ int page_code;
+ int retval = 0;
+
+ if (set_inq_values(udev, &dev_scsi, maj_min_dev) < 0) {
+ retval = 1;
+ goto out;
+ }
+
+ /* get per device (vendor + model) options from the config file */
+ per_dev_options(udev, &dev_scsi, &good_dev, &page_code);
+ if (!good_dev) {
+ retval = 1;
+ goto out;
+ }
+
+ /* read serial number from mode pages (no values for optical drives) */
+ scsi_get_serial(udev, &dev_scsi, maj_min_dev, page_code, MAX_SERIAL_LEN);
+
+ if (export) {
+ char serial_str[MAX_SERIAL_LEN];
+
+ printf("ID_SCSI=1\n");
+ printf("ID_VENDOR=%s\n", vendor_str);
+ printf("ID_VENDOR_ENC=%s\n", vendor_enc_str);
+ printf("ID_MODEL=%s\n", model_str);
+ printf("ID_MODEL_ENC=%s\n", model_enc_str);
+ printf("ID_REVISION=%s\n", revision_str);
+ printf("ID_TYPE=%s\n", type_str);
+ if (dev_scsi.serial[0] != '\0') {
+ 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_short, serial_str, sizeof(serial_str));
+ util_replace_chars(serial_str, NULL);
+ printf("ID_SERIAL_SHORT=%s\n", serial_str);
+ }
+ if (dev_scsi.wwn[0] != '\0') {
+ printf("ID_WWN=0x%s\n", dev_scsi.wwn);
+ if (dev_scsi.wwn_vendor_extension[0] != '\0') {
+ printf("ID_WWN_VENDOR_EXTENSION=0x%s\n", dev_scsi.wwn_vendor_extension);
+ printf("ID_WWN_WITH_EXTENSION=0x%s%s\n", dev_scsi.wwn, dev_scsi.wwn_vendor_extension);
+ } else
+ printf("ID_WWN_WITH_EXTENSION=0x%s\n", dev_scsi.wwn);
+ }
+ if (dev_scsi.tgpt_group[0] != '\0')
+ printf("ID_TARGET_PORT=%s\n", dev_scsi.tgpt_group);
+ if (dev_scsi.unit_serial_number[0] != '\0')
+ printf("ID_SCSI_SERIAL=%s\n", dev_scsi.unit_serial_number);
+ goto out;
+ }
+
+ if (dev_scsi.serial[0] == '\0') {
+ retval = 1;
+ goto out;
+ }
+
+ if (reformat_serial) {
+ char serial_str[MAX_SERIAL_LEN];
+
+ util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
+ util_replace_chars(serial_str, NULL);
+ printf("%s\n", serial_str);
+ goto out;
+ }
+
+ printf("%s\n", dev_scsi.serial);
+out:
+ return retval;
+}
+
+int main(int argc, char **argv)
+{
+ _cleanup_udev_unref_ struct udev *udev;
+ int retval = 0;
+ char maj_min_dev[MAX_PATH_LEN];
+ int newargc;
+ char **newargv = NULL;
+
+ log_parse_environment();
+ log_open();
+
+ udev = udev_new();
+ if (udev == NULL)
+ goto exit;
+
+ /*
+ * Get config file options.
+ */
+ retval = get_file_options(udev, NULL, NULL, &newargc, &newargv);
+ if (retval < 0) {
+ retval = 1;
+ goto exit;
+ }
+ if (retval == 0) {
+ assert(newargv);
+
+ if (set_options(udev, newargc, newargv, maj_min_dev) < 0) {
+ retval = 2;
+ goto exit;
+ }
+ }
+
+ /*
+ * Get command line options (overriding any config file settings).
+ */
+ if (set_options(udev, argc, argv, maj_min_dev) < 0)
+ exit(1);
+
+ if (!dev_specified) {
+ log_error("No device specified.");
+ retval = 1;
+ goto exit;
+ }
+
+ retval = scsi_id(udev, maj_min_dev);
+
+exit:
+ if (newargv) {
+ free(newargv[0]);
+ free(newargv);
+ }
+ log_close();
+ return retval;
+}
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