X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=extras%2Fscsi_id%2Fscsi_id.c;h=21b7cbeaec2a36f128efce8e0011199aa25f3e87;hb=18cff5c3b2e3591fa46107288ea2d7026a15ccf3;hp=86c76cfcc40bf11648a5df8e72baca8a70579147;hpb=111e4f81ff057fd5869d152a503ad982e2116f85;p=elogind.git

diff --git a/extras/scsi_id/scsi_id.c b/extras/scsi_id/scsi_id.c
index 86c76cfcc..21b7cbeae 100644
--- a/extras/scsi_id/scsi_id.c
+++ b/extras/scsi_id/scsi_id.c
@@ -69,39 +69,7 @@ static void log_fn(struct udev *udev, int priority,
 	vsyslog(priority, format, args);
 }
 
-static void set_str(char *to, const char *from, size_t count)
-{
-	size_t i, j, len;
-
-	/* strip trailing whitespace */
-	len = strnlen(from, count);
-	while (len && isspace(from[len-1]))
-		len--;
-
-	/* strip leading whitespace */
-	i = 0;
-	while (isspace(from[i]) && (i < len))
-		i++;
-
-	j = 0;
-	while (i < len) {
-		/* substitute multiple whitespace */
-		if (isspace(from[i])) {
-			while (isspace(from[i]))
-				i++;
-			to[j++] = '_';
-		}
-		/* skip chars */
-		if (from[i] == '/') {
-			i++;
-			continue;
-		}
-		to[j++] = from[i++];
-	}
-	to[j] = '\0';
-}
-
-static void set_type(char *to, const char *from, size_t len)
+static void set_type(const char *from, char *to, size_t len)
 {
 	int type_num;
 	char *eptr;
@@ -533,11 +501,13 @@ static int set_inq_values(struct udev *udev, struct scsi_id_device *dev_scsi, co
 	if (retval)
 		return retval;
 
-	set_str(vendor_str, dev_scsi->vendor, sizeof(vendor_str));
-	set_str(model_str, dev_scsi->model, sizeof(model_str));
-	set_type(type_str, dev_scsi->type, sizeof(type_str));
-	set_str(revision_str, dev_scsi->revision, sizeof(revision_str));
-
+	udev_util_replace_whitespace(dev_scsi->vendor, vendor_str, sizeof(vendor_str));
+	udev_util_replace_chars(vendor_str, NULL);
+	udev_util_replace_whitespace(dev_scsi->model, model_str, sizeof(model_str));
+	udev_util_replace_chars(model_str, NULL);
+	set_type(dev_scsi->type, type_str, sizeof(type_str));
+	udev_util_replace_whitespace(dev_scsi->revision, revision_str, sizeof(revision_str));
+	udev_util_replace_chars(revision_str, NULL);
 	return 0;
 }
 
@@ -568,55 +538,59 @@ static void format_serial(char *serial)
 
 /*
  * 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
- * could be expanded, for example, if we want to report a failure like no
- * memory etc. return 2, and return 1 for expected cases (like broken
- * device found) that do not print an id.
+ * returns a value passed to exit() - 0 if printed an id, else 1.
  */
 static int scsi_id(struct udev *udev, char *maj_min_dev)
 {
-	int retval;
 	struct scsi_id_device dev_scsi;
 	int good_dev;
 	int page_code;
-	char serial_short[MAX_SERIAL_LEN] = "";
+	int retval = 0;
 
-	set_inq_values(udev, &dev_scsi, maj_min_dev);
+	memset(&dev_scsi, 0x00, sizeof(struct scsi_id_device));
+
+	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 */
-	retval = per_dev_options(udev, &dev_scsi, &good_dev, &page_code);
+	per_dev_options(udev, &dev_scsi, &good_dev, &page_code);
 	dbg(udev, "per dev options: good %d; page code 0x%x\n", good_dev, page_code);
-
 	if (!good_dev) {
 		retval = 1;
-	} else if (scsi_get_serial(udev,
-				   &dev_scsi, maj_min_dev, page_code,
-				   serial_short, MAX_SERIAL_LEN)) {
-		retval = 1;
-	} else {
-		retval = 0;
+		goto out;
 	}
-	if (!retval) {
-		if (export) {
-			char serial_str[MAX_SERIAL_LEN];
-
-			printf("ID_VENDOR=%s\n", vendor_str);
-			printf("ID_MODEL=%s\n", model_str);
-			printf("ID_REVISION=%s\n", revision_str);
-			set_str(serial_str, dev_scsi.serial, sizeof(serial_str));
+
+	/* 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_VENDOR=%s\n", vendor_str);
+		printf("ID_MODEL=%s\n", model_str);
+		printf("ID_REVISION=%s\n", revision_str);
+		printf("ID_TYPE=%s\n", type_str);
+		if (dev_scsi.serial[0] != '\0') {
+			udev_util_replace_whitespace(dev_scsi.serial, serial_str, sizeof(serial_str));
+			udev_util_replace_chars(serial_str, NULL);
 			printf("ID_SERIAL=%s\n", serial_str);
-			set_str(serial_str, serial_short, sizeof(serial_str));
+			udev_util_replace_whitespace(dev_scsi.serial_short, serial_str, sizeof(serial_str));
+			udev_util_replace_chars(serial_str, NULL);
 			printf("ID_SERIAL_SHORT=%s\n", serial_str);
-			printf("ID_TYPE=%s\n", type_str);
-		} else {
-			if (reformat_serial)
-				format_serial(dev_scsi.serial);
-			printf("%s\n", dev_scsi.serial);
 		}
-		dbg(udev, "%s\n", dev_scsi.serial);
-		retval = 0;
+		goto out;
 	}
 
+	if (dev_scsi.serial[0] == '\0') {
+		retval = 1;
+		goto out;
+	}
+	if (reformat_serial)
+		format_serial(dev_scsi.serial);
+	printf("%s\n", dev_scsi.serial);
+out:
 	return retval;
 }