X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev_rules.c;h=9606f04d3df64f88b0eb2cbce40d87379ce32ac8;hb=66f74a2d1411e9761ac90c5a2f81d70b22ec936d;hp=aa66c7ad30a858bcdfc3b739cb7ddda2af3e5f09;hpb=be4bedd16b934c8663f8c231f07f23091cde8261;p=elogind.git

diff --git a/udev_rules.c b/udev_rules.c
index aa66c7ad3..9606f04d3 100644
--- a/udev_rules.c
+++ b/udev_rules.c
@@ -174,21 +174,26 @@ static int get_key(char **line, char **key, char **value)
 		linepos++;
 
 	/* get the value*/
-	if (linepos[0] == '\0')
-		return -1;
-
 	if (linepos[0] == '"') {
 		linepos++;
 		temp = strchr(linepos, '"');
-		if (!temp)
+		if (!temp) {
+			dbg("missing closing quote");
 			return -1;
+		}
+		dbg("value is quoted");
 		temp[0] = '\0';
 	} else if (linepos[0] == '\'') {
 		linepos++;
 		temp = strchr(linepos, '\'');
-		if (!temp)
+		if (!temp) {
+			dbg("missing closing quote");
 			return -1;
+		}
+		dbg("value is quoted");
 		temp[0] = '\0';
+	} else if (linepos[0] == '\0') {
+		dbg("value is empty");
 	} else {
 		temp = linepos;
 		while (temp[0] && !isspace(temp[0]))
@@ -200,7 +205,7 @@ static int get_key(char **line, char **key, char **value)
 	return 0;
 }
 
-static int import_keys_into_env(const char *buf, size_t bufsize)
+static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bufsize)
 {
 	char line[LINE_SIZE];
 	const char *bufline;
@@ -211,7 +216,7 @@ static int import_keys_into_env(const char *buf, size_t bufsize)
 	size_t count;
 	int lineno;
 
-	/* loop through the whole file */
+	/* loop through the whole buffer */
 	lineno = 0;
 	cur = 0;
 	while (cur < bufsize) {
@@ -241,15 +246,16 @@ static int import_keys_into_env(const char *buf, size_t bufsize)
 
 		linepos = line;
 		if (get_key(&linepos, &variable, &value) == 0) {
-			dbg("import %s=%s", variable, value);
-			setenv(variable, value, 0);
+			dbg("import '%s=%s'", variable, value);
+			name_list_key_add(&udev->env_list, variable, value);
+			setenv(variable, value, 1);
 		}
 	}
 
 	return 0;
 }
 
-static int import_file_into_env(const char *filename)
+static int import_file_into_env(struct udevice *udev, const char *filename)
 {
 	char *buf;
 	size_t bufsize;
@@ -258,17 +264,24 @@ static int import_file_into_env(const char *filename)
 		err("can't open '%s'", filename);
 		return -1;
 	}
-	import_keys_into_env(buf, bufsize);
+	import_keys_into_env(udev, buf, bufsize);
 	file_unmap(buf, bufsize);
 
 	return 0;
 }
 
-/** Finds the lowest positive N such that <name>N isn't present in 
- *  $(udevroot) either as a file or a symlink.
- *
- *  @param  name                Name to check for
- *  @return                     0 if <name> didn't exist and N otherwise.
+static int import_program_into_env(struct udevice *udev, const char *program)
+{
+	char result[1024];
+	size_t reslen;
+
+	if (execute_program(program, udev->subsystem, result, sizeof(result), &reslen) != 0)
+		return -1;
+	return import_keys_into_env(udev, result, reslen);
+}
+
+/* finds the lowest positive N such that <name>N isn't present in the udevdb
+ * if <name> doesn't exist, 0 is returned, N otherwise
  */
 static int find_free_number(struct udevice *udev, const char *name)
 {
@@ -780,7 +793,7 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule,
 					len = strlen(value);
 					while (len > 0 && isspace(value[len-1]))
 						value[--len] = '\0';
-					dbg("removed %i trailing whitespace chars from '%s'", strlen(value)-len, value);
+					dbg("removed %zi trailing whitespace chars from '%s'", strlen(value)-len, value);
 				}
 
 				dbg("compare attribute '%s' value '%s' with '%s'", pair->name, value, pair->value);
@@ -811,16 +824,24 @@ try_parent:
 	/* import variables from file into environment */
 	if (rule->import_operation != KEY_OP_UNSET) {
 		char import[PATH_SIZE];
+		int rc = -1;
 
 		strlcpy(import, rule->import, sizeof(import));
 		apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
-		dbg("check for " KEY_IMPORT " import='%s", import);
-		if (import_file_into_env(import) != 0) {
+		dbg("check for " KEY_IMPORT " import='%s'", import);
+		if (rule->import_exec) {
+			dbg("run executable file import='%s'", import);
+			rc = import_program_into_env(udev, import);
+		} else {
+			dbg("import file import='%s'", import);
+			rc = import_file_into_env(udev, import);
+		}
+		if (rc) {
 			dbg(KEY_IMPORT " failed");
 			if (rule->import_operation != KEY_OP_NOMATCH)
 				goto exit;
 		} else
-			dbg(KEY_IMPORT " file '%s' imported", rule->import);
+			dbg(KEY_IMPORT " '%s' imported", rule->import);
 		dbg(KEY_IMPORT " key is true");
 	}