X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=namedev.c;h=6b1aa297eae222b5736147301d5af211ec2b6d40;hb=8fc34188503e0dd131eb215b7b1832e21434c7c8;hp=b3b23521d6cf154f1554921546171ddb480809ce;hpb=18f0045bc86f6b8b50a91fc4e8af4cfdd2379751;p=elogind.git

diff --git a/namedev.c b/namedev.c
index b3b23521d..6b1aa297e 100644
--- a/namedev.c
+++ b/namedev.c
@@ -36,6 +36,7 @@
 #include "list.h"
 #include "udev.h"
 #include "udev_version.h"
+#include "logging.h"
 #include "namedev.h"
 #include "libsysfs/libsysfs.h"
 #include "klibc_fixups.h"
@@ -140,16 +141,32 @@ static struct perm_device *find_perm(char *name)
 	return NULL;
 }
 
-static mode_t get_default_mode(struct sysfs_class_device *class_dev)
+static mode_t get_default_mode(void)
 {
 	mode_t mode = 0600;	/* default to owner rw only */
 
-	if (strlen(default_mode_str) != 0) {
+	if (strlen(default_mode_str) != 0)
 		mode = strtol(default_mode_str, NULL, 8);
-	}
+
 	return mode;
 }
 
+static char *get_default_owner(void)
+{
+	if (strlen(default_owner_str) == 0)
+		strncpy(default_owner_str, "root", OWNER_SIZE);
+
+	return default_owner_str;
+}
+
+static char *get_default_group(void)
+{
+	if (strlen(default_group_str) == 0)
+		strncpy(default_group_str, "root", GROUP_SIZE);
+
+	return default_group_str;
+}
+
 static void apply_format(struct udevice *udev, unsigned char *string)
 {
 	char temp[NAME_SIZE];
@@ -285,12 +302,12 @@ static void wait_for_device_to_initialize(struct sysfs_device *sysfs_device)
 				/* sleep to give the kernel a chance to create the file */
 				sleep(1);
 			}
-			dbg("Timed out waiting for '%s' file, continuing on anyway...", b->file);
+			dbg("timed out waiting for '%s' file, continuing on anyway...", b->file);
 			goto exit;
 		}
 		b++;
 	}
-	dbg("Did not find bus type '%s' on list of bus_id_files, contact greg@kroah.com", sysfs_device->bus);
+	dbg("did not find bus type '%s' on list of bus_id_files, contact greg@kroah.com", sysfs_device->bus);
 exit:
 	return; /* here to prevent compiler warning... */
 }
@@ -534,7 +551,7 @@ static struct sysfs_device *get_sysfs_device(struct sysfs_class_device *class_de
 		if (sysfs_device != NULL)
 			goto device_found;
 	}
-	dbg("Timed out waiting for device symlink, continuing on anyway...");
+	dbg("timed out waiting for device symlink, continuing on anyway...");
 	
 device_found:
         /* We have another issue with just the wait above - the sysfs part of
@@ -546,10 +563,9 @@ device_found:
 	 * if needed
 	 */
         if (sysfs_device) {
-		
 		if (sysfs_device->bus[0] != '\0')
 			goto bus_found;
-		
+
 		loop = 10;
 		tspec.tv_nsec = 10000000;
 		while (loop--) {
@@ -559,60 +575,29 @@ device_found:
 			if (sysfs_device->bus[0] != '\0')
 				goto bus_found;
 		}
-		dbg("Timed out waiting to find the device bus, continuing on anyway\n");
+		dbg("timed out waiting to find the device bus, continuing on anyway");
 		goto exit;
 bus_found:
-		dbg("Device %s is registered with bus %s\n",
+		dbg("device %s is registered with bus '%s'",
 				sysfs_device->name, sysfs_device->bus);
 	}
 exit:
 	return sysfs_device;
 }
 
-int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *udev)
+static int match_rule(struct config_device *dev, struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 {
-	struct sysfs_device *sysfs_device = NULL;
-	struct config_device *dev;
-	struct perm_device *perm;
-	char *pos;
-
-	udev->mode = 0;
-
-	/* find the sysfs_device associated with this class device */
-	sysfs_device = get_sysfs_device(class_dev);
-	if (sysfs_device) {
-		dbg("sysfs_device->path='%s'", sysfs_device->path);
-		dbg("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
-		dbg("sysfs_device->bus='%s'", sysfs_device->bus);
-		strfieldcpy(udev->bus_id, sysfs_device->bus_id);
-		wait_for_device_to_initialize(sysfs_device);
-	} else {
-		dbg("class_dev->name = '%s'", class_dev->name);
-	}
-
-	strfieldcpy(udev->kernel_name, class_dev->name);
-
-	/* get kernel number */
-	pos = class_dev->name + strlen(class_dev->name);
-	while (isdigit(*(pos-1)))
-		pos--;
-	strfieldcpy(udev->kernel_number, pos);
-	dbg("kernel_number='%s'", udev->kernel_number);
-
-	/* look for a matching rule to apply */
-	list_for_each_entry(dev, &config_device_list, node) {
-		dbg("process rule");
-
+	while (1) {
 		/* check for matching bus value */
 		if (dev->bus[0] != '\0') {
 			if (sysfs_device == NULL) {
 				dbg("device has no bus");
-				continue;
+				goto no_good;
 			}
 			dbg("check for " FIELD_BUS " dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
 			if (strcmp_pattern(dev->bus, sysfs_device->bus) != 0) {
 				dbg(FIELD_BUS " is not matching");
-				continue;
+				goto no_good;
 			} else {
 				dbg(FIELD_BUS " matches");
 			}
@@ -623,7 +608,7 @@ int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *ud
 			dbg("check for " FIELD_KERNEL " dev->kernel='%s' class_dev->name='%s'", dev->kernel, class_dev->name);
 			if (strcmp_pattern(dev->kernel, class_dev->name) != 0) {
 				dbg(FIELD_KERNEL " is not matching");
-				continue;
+				goto no_good;
 			} else {
 				dbg(FIELD_KERNEL " matches");
 			}
@@ -634,7 +619,7 @@ int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *ud
 			dbg("check " FIELD_ID);
 			if (match_id(dev, class_dev, sysfs_device) != 0) {
 				dbg(FIELD_ID " is not matching");
-				continue;
+				goto no_good;
 			} else {
 				dbg(FIELD_ID " matches");
 			}
@@ -645,7 +630,7 @@ int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *ud
 			dbg("check " FIELD_PLACE);
 			if (match_place(dev, class_dev, sysfs_device) != 0) {
 				dbg(FIELD_PLACE " is not matching");
-				continue;
+				goto no_good;
 			} else {
 				dbg(FIELD_PLACE " matches");
 			}
@@ -656,7 +641,7 @@ int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *ud
 			dbg("check " FIELD_SYSFS " pairs");
 			if (match_sysfs_pairs(dev, class_dev, sysfs_device) != 0) {
 				dbg(FIELD_SYSFS " is not matching");
-				continue;
+				goto no_good;
 			} else {
 				dbg(FIELD_SYSFS " matches");
 			}
@@ -668,7 +653,7 @@ int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *ud
 			apply_format(udev, dev->program);
 			if (execute_program(dev->program, udev->program_result, NAME_SIZE) != 0) {
 				dbg(FIELD_PROGRAM " returned nozero");
-				continue;
+				goto no_good;
 			} else {
 				dbg(FIELD_PROGRAM " returned successful");
 			}
@@ -681,7 +666,7 @@ int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *ud
 			    dev->result, udev->program_result);
 			if (strcmp_pattern(dev->result, udev->program_result) != 0) {
 				dbg(FIELD_RESULT " is not matching");
-				continue;
+				goto no_good;
 			} else {
 				dbg(FIELD_RESULT " matches");
 			}
@@ -693,11 +678,62 @@ int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *ud
 			return -1;
 		}
 
-		/* Yup, this rule belongs to us! */
-		dbg("found matching rule, '%s' becomes '%s'", dev->kernel, dev->name);
-		strfieldcpy(udev->name, dev->name);
-		strfieldcpy(udev->symlink, dev->symlink);
-		goto found;
+		/* Yeah, we matched! */
+		return 0;
+
+no_good:
+		sysfs_device = sysfs_get_device_parent(sysfs_device);
+		if (sysfs_device == NULL)
+			return -ENODEV;
+		dbg("sysfs_device->path='%s'", sysfs_device->path);
+		dbg("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
+		dbg("sysfs_device->bus='%s'", sysfs_device->bus);
+	}
+
+}
+
+int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+	struct sysfs_device *sysfs_device = NULL;
+	struct config_device *dev;
+	struct perm_device *perm;
+	char *pos;
+
+	udev->mode = 0;
+
+	/* find the sysfs_device associated with this class device */
+	sysfs_device = get_sysfs_device(class_dev);
+	if (sysfs_device) {
+		dbg("sysfs_device->path='%s'", sysfs_device->path);
+		dbg("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
+		dbg("sysfs_device->bus='%s'", sysfs_device->bus);
+		strfieldcpy(udev->bus_id, sysfs_device->bus_id);
+		wait_for_device_to_initialize(sysfs_device);
+	} else {
+		dbg("class_dev->name = '%s'", class_dev->name);
+	}
+
+	strfieldcpy(udev->kernel_name, class_dev->name);
+
+	/* get kernel number */
+	pos = class_dev->name + strlen(class_dev->name);
+	while (isdigit(*(pos-1)))
+		pos--;
+	strfieldcpy(udev->kernel_number, pos);
+	dbg("kernel_number='%s'", udev->kernel_number);
+
+	/* look for a matching rule to apply */
+	list_for_each_entry(dev, &config_device_list, node) {
+		dbg("process rule");
+
+		if (match_rule(dev, class_dev, udev, sysfs_device) == 0) {
+			/* Yup, this rule belongs to us! */
+			info("configured rule in '%s' at line %i applied, '%s' becomes '%s'",
+			    udev_rules_filename, dev->config_line, udev->kernel_name, dev->name);
+			strfieldcpy(udev->name, dev->name);
+			strfieldcpy(udev->symlink, dev->symlink);
+			goto found;
+		}
 	}
 
 	/* no rule was found so we use the kernel name */
@@ -717,9 +753,9 @@ done:
 		strfieldcpy(udev->group, perm->group);
 	} else {
 		/* no matching perms found :( */
-		udev->mode = get_default_mode(class_dev);
-		udev->owner[0] = 0x00;
-		udev->group[0] = 0x00;
+		udev->mode = get_default_mode();
+		strncpy(udev->owner, get_default_owner(), OWNER_SIZE);
+		strncpy(udev->group, get_default_group(), GROUP_SIZE);
 	}
 	dbg("name, '%s' is going to have owner='%s', group='%s', mode = %#o",
 	    udev->name, udev->owner, udev->group, udev->mode);