X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev_utils.c;h=e6580d2c0acdca0404e17b2cddb1eee19ec0ad6d;hb=69f57c6a2b94ae3b70a0ca43b46c30f8dce0a295;hp=aa5c75f74d02a29c466a0185a8bbb9126cd1ed42;hpb=45a7b668eca398831c0cfc39e4237494b3d603e9;p=elogind.git

diff --git a/udev_utils.c b/udev_utils.c
index aa5c75f74..e6580d2c0 100644
--- a/udev_utils.c
+++ b/udev_utils.c
@@ -25,6 +25,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <ctype.h>
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
@@ -46,22 +47,26 @@ void udev_init_device(struct udevice *udev, const char* devpath, const char *sub
 		strfieldcpy(udev->subsystem, subsystem);
 
 	if (strcmp(udev->subsystem, "block") == 0)
-		udev->type = 'b';
+		udev->type = BLOCK;
 	else if (strcmp(udev->subsystem, "net") == 0)
-		udev->type = 'n';
+		udev->type = NET;
 	else if (strncmp(udev->devpath, "/block/", 7) == 0)
-		udev->type = 'b';
+		udev->type = BLOCK;
 	else if (strncmp(udev->devpath, "/class/net/", 11) == 0)
-		udev->type = 'n';
+		udev->type = NET;
 	else if (strncmp(udev->devpath, "/class/", 7) == 0)
-		udev->type = 'c';
+		udev->type = CLASS;
+
+	udev->mode = 0660;
+	strcpy(udev->owner, "root");
+	strcpy(udev->group, "root");
 }
 
-int kernel_release_satisfactory(int version, int patchlevel, int sublevel)
+int kernel_release_satisfactory(unsigned int version, unsigned int patchlevel, unsigned int sublevel)
 {
-	static int kversion = 0;
-	static int kpatchlevel;
-	static int ksublevel;
+	static unsigned int kversion = 0;
+	static unsigned int kpatchlevel;
+	static unsigned int ksublevel;
 
 	if (kversion == 0) {
 		struct utsname uts;
@@ -107,6 +112,66 @@ int create_path(const char *path)
 	return mkdir(p, 0755);
 }
 
+/* Reset permissions on the device node, before unlinking it to make sure,
+ * that permisions of possible hard links will be removed too.
+ */
+int unlink_secure(const char *filename)
+{
+	int retval;
+
+	retval = chown(filename, 0, 0);
+	if (retval)
+		dbg("chown(%s, 0, 0) failed with error '%s'", filename, strerror(errno));
+
+	retval = chmod(filename, 0000);
+	if (retval)
+		dbg("chmod(%s, 0000) failed with error '%s'", filename, strerror(errno));
+
+	retval = unlink(filename);
+	if (errno == ENOENT)
+		retval = 0;
+
+	if (retval)
+		dbg("unlink(%s) failed with error '%s'", filename, strerror(errno));
+
+	return retval;
+}
+
+int parse_get_pair(char **orig_string, char **left, char **right)
+{
+	char *temp;
+	char *string = *orig_string;
+
+	if (!string)
+		return -ENODEV;
+
+	/* eat any whitespace */
+	while (isspace(*string) || *string == ',')
+		++string;
+
+	/* split based on '=' */
+	temp = strsep(&string, "=");
+	*left = temp;
+	if (!string)
+		return -ENODEV;
+
+	/* take the right side and strip off the '"' */
+	while (isspace(*string))
+		++string;
+	if (*string == '"')
+		++string;
+	else
+		return -ENODEV;
+
+	temp = strsep(&string, "\"");
+	if (!string || *temp == '\0')
+		return -ENODEV;
+	*right = temp;
+	*orig_string = string;
+	
+	return 0;
+}
+
 int file_map(const char *filename, char **buf, size_t *bufsize)
 {
 	struct stat stats;
@@ -139,22 +204,32 @@ void file_unmap(char *buf, size_t bufsize)
 	munmap(buf, bufsize);
 }
 
-size_t buf_get_line(char *buf, size_t buflen, size_t cur)
+/* return number of chars until the next newline, skip escaped newline */
+size_t buf_get_line(const char *buf, size_t buflen, size_t cur)
 {
-	size_t count = 0;
+	int escape = 0;
+	size_t count;
+
+	for (count = cur; count < buflen; count++) {
+		if (!escape && buf[count] == '\n')
+			break;
 
-	for (count = cur; count < buflen && buf[count] != '\n'; count++);
+		if (buf[count] == '\\')
+			escape = 1;
+		else
+			escape = 0;
+	}
 
 	return count - cur;
 }
 
 void no_trailing_slash(char *path)
 {
-	int len;
+	size_t len;
 
 	len = strlen(path);
-	if (len > 0 && path[len-1] == '/')
-		path[len-1] = '\0';
+	while (len > 0 && path[len-1] == '/')
+		path[--len] = '\0';
 }
 
 struct files {