X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev_rules.c;h=5ae4aa2b7817c0f6a1f48e0480eb879a1e6676c7;hp=400ebad9e33b6841302065576e528feed81707b4;hb=c8e826147a0e39cf09079ea4e546f732f58b4eba;hpb=e2ecb34ffd4fd8b0d31a65ec0c59dc4f8023ad6d

diff --git a/udev_rules.c b/udev_rules.c
index 400ebad9e..5ae4aa2b7 100644
--- a/udev_rules.c
+++ b/udev_rules.c
@@ -349,11 +349,6 @@ static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bu
 		cur += count+1;
 		lineno++;
 
-		if (count >= sizeof(line)) {
-			err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
-			continue;
-		}
-
 		/* eat the whitespace */
 		while ((count > 0) && isspace(bufline[0])) {
 			bufline++;
@@ -366,6 +361,11 @@ static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bu
 		if (bufline[0] == COMMENT_CHARACTER)
 			continue;
 
+		if (count >= sizeof(line)) {
+			err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
+			continue;
+		}
+
 		memcpy(line, bufline, count);
 		line[count] = '\0';
 
@@ -475,10 +475,12 @@ static int pass_env_to_socket(const char *sockname, const char *devpath, const c
 
 	bufpos = snprintf(buf, sizeof(buf)-1, "%s@%s", action, devpath);
 	bufpos++;
-	for (i = 0; environ[i] != NULL && bufpos < sizeof(buf); i++) {
+	for (i = 0; environ[i] != NULL && bufpos < (sizeof(buf)-1); i++) {
 		bufpos += strlcpy(&buf[bufpos], environ[i], sizeof(buf) - bufpos-1);
 		bufpos++;
 	}
+	if (bufpos > sizeof(buf))
+		bufpos = sizeof(buf);
 
 	count = sendto(sock, &buf, bufpos, 0, (struct sockaddr *)&saddr, addrlen);
 	if (count < 0)
@@ -597,12 +599,14 @@ void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
 		SUBST_KERNEL,
 		SUBST_KERNEL_NUMBER,
 		SUBST_ID,
+		SUBST_DRIVER,
 		SUBST_MAJOR,
 		SUBST_MINOR,
 		SUBST_RESULT,
 		SUBST_ATTR,
 		SUBST_PARENT,
 		SUBST_TEMP_NODE,
+		SUBST_NAME,
 		SUBST_ROOT,
 		SUBST_SYS,
 		SUBST_ENV,
@@ -616,6 +620,7 @@ void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
 		{ .name = "number",	.fmt = 'n',	.type = SUBST_KERNEL_NUMBER },
 		{ .name = "kernel",	.fmt = 'k',	.type = SUBST_KERNEL },
 		{ .name = "id",		.fmt = 'b',	.type = SUBST_ID },
+		{ .name = "driver",	.fmt = 'd',	.type = SUBST_DRIVER },
 		{ .name = "major",	.fmt = 'M',	.type = SUBST_MAJOR },
 		{ .name = "minor",	.fmt = 'm',	.type = SUBST_MINOR },
 		{ .name = "result",	.fmt = 'c',	.type = SUBST_RESULT },
@@ -623,6 +628,7 @@ void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize)
 		{ .name = "sysfs",	.fmt = 's',	.type = SUBST_ATTR },
 		{ .name = "parent",	.fmt = 'P',	.type = SUBST_PARENT },
 		{ .name = "tempnode",	.fmt = 'N',	.type = SUBST_TEMP_NODE },
+		{ .name = "name",	.fmt = 'D',	.type = SUBST_NAME },
 		{ .name = "root",	.fmt = 'r',	.type = SUBST_ROOT },
 		{ .name = "sys",	.fmt = 'S',	.type = SUBST_SYS },
 		{ .name = "env",	.fmt = 'E',	.type = SUBST_ENV },
@@ -707,6 +713,12 @@ found:
 				dbg("substitute id '%s'", udev->dev_parent->kernel);
 			}
 			break;
+		case SUBST_DRIVER:
+			if (udev->dev_parent != NULL) {
+				strlcat(string, udev->dev_parent->driver, maxsize);
+				dbg("substitute driver '%s'", udev->dev_parent->driver);
+			}
+			break;
 		case SUBST_MAJOR:
 			sprintf(temp2, "%d", major(udev->devt));
 			strlcat(string, temp2, maxsize);
@@ -835,6 +847,10 @@ found:
 			strlcat(string, udev->tmp_node, maxsize);
 			dbg("substitute temporary device node name '%s'", udev->tmp_node);
 			break;
+		case SUBST_NAME:
+			strlcat(string, udev->name, maxsize);
+			dbg("substitute udev->name '%s'", udev->name);
+			break;
 		case SUBST_ROOT:
 			strlcat(string, udev_root, maxsize);
 			dbg("substitute udev_root '%s'", udev_root);
@@ -944,6 +960,22 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule)
 	if (match_key("NAME", rule, &rule->name, udev->name))
 		goto nomatch;
 
+	/* match against current list of symlinks */
+	if (rule->symlink_match.operation == KEY_OP_MATCH ||
+	    rule->symlink_match.operation == KEY_OP_NOMATCH) {
+		struct name_entry *name_loop;
+		int match = 0;
+
+		list_for_each_entry(name_loop, &udev->symlink_list, node) {
+			if (match_key("SYMLINK", rule, &rule->symlink_match, name_loop->name) == 0) {
+				match = 1;
+				break;
+			}
+		}
+		if (!match)
+			goto nomatch;
+	}
+
 	for (i = 0; i < rule->env.count; i++) {
 		struct key_pair *pair = &rule->env.keys[i];
 
@@ -962,7 +994,8 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule)
 		}
 	}
 
-	if (rule->test.operation != KEY_OP_UNSET) {
+	if (rule->test.operation == KEY_OP_MATCH ||
+	    rule->test.operation == KEY_OP_NOMATCH) {
 		char filename[PATH_SIZE];
 		char devpath[PATH_SIZE];
 		char *attr;
@@ -979,6 +1012,14 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule)
 				strlcat(filename, "/", sizeof(filename));
 				strlcat(filename, attr, sizeof(filename));
 			}
+		} else if (filename[0] != '/') {
+			char tmp[PATH_SIZE];
+
+			strlcpy(tmp, sysfs_path, sizeof(tmp));
+			strlcat(tmp, udev->dev->devpath, sizeof(tmp));
+			strlcat(tmp, "/", sizeof(tmp));
+			strlcat(tmp, filename, sizeof(tmp));
+			strlcpy(filename, tmp, sizeof(filename));
 		}
 
 		match = (stat(filename, &statbuf) == 0);
@@ -999,7 +1040,7 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule)
 	if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
 		int found;
 
-		found = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
+		found = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 10) == 0);
 		if (!found && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH))
 			goto nomatch;
 	}
@@ -1311,14 +1352,18 @@ int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
 			}
 
 			/* collect symlinks */
-			if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
+			if (!udev->symlink_final &&
+			    (rule->symlink.operation == KEY_OP_ASSIGN ||
+			     rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
+			     rule->symlink.operation == KEY_OP_ADD)) {
 				char temp[PATH_SIZE];
 				char *pos, *next;
 				int count;
 
 				if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
 					udev->symlink_final = 1;
-				if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
+				if (rule->symlink.operation == KEY_OP_ASSIGN ||
+				    rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
 					info("reset symlink list");
 					name_list_cleanup(&udev->symlink_list);
 				}
@@ -1401,8 +1446,8 @@ int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev)
 	}
 
 	if (!name_set) {
+		info("no node name set, will use kernel name '%s'", udev->dev->kernel);
 		strlcpy(udev->name, udev->dev->kernel, sizeof(udev->name));
-		info("no node name set, will use kernel name '%s'", udev->name);
 	}
 
 	if (udev->tmp_node[0] != '\0') {
@@ -1428,9 +1473,14 @@ int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
 			break;
 
 		dbg("process rule");
-		if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
-		    rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET ||
-		    rule->group.operation != KEY_OP_UNSET) {
+		if (rule->name.operation == KEY_OP_ASSIGN ||
+		    rule->name.operation == KEY_OP_ASSIGN_FINAL ||
+		    rule->name.operation == KEY_OP_ADD ||
+		    rule->symlink.operation == KEY_OP_ASSIGN ||
+		    rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
+		    rule->symlink.operation == KEY_OP_ADD ||
+		    rule->mode_operation != KEY_OP_UNSET ||
+		    rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
 			dbg("skip rule that names a device");
 			continue;
 		}
@@ -1441,6 +1491,10 @@ int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev)
 				udev->ignore_device = 1;
 				return 0;
 			}
+			if (rule->ignore_remove) {
+				udev->ignore_remove = 1;
+				dbg("remove event should be ignored");
+			}
 
 			if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
 				struct name_entry *entry;