X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=libsysfs%2Fsysfs_utils.c;h=c2ce13433d13585b7acca44df0ecd4915298b3cb;hb=77c46e9bd630806cf23741ead3d7551661973847;hp=4e96051c780452809f087efb52bf543f3855b021;hpb=ff44a6b0b7e98c9f696ee13c197d982819991de8;p=elogind.git

diff --git a/libsysfs/sysfs_utils.c b/libsysfs/sysfs_utils.c
index 4e96051c7..c2ce13433 100644
--- a/libsysfs/sysfs_utils.c
+++ b/libsysfs/sysfs_utils.c
@@ -76,6 +76,23 @@ static int sysfs_get_fs_mnt_path(const unsigned char *fs_type,
 #endif
 }
 
+/*
+ * sysfs_trailing_slash: checks if there's a trailing slash to path
+ * @path: path to check
+ * returns 1 if true and 0 if not
+ */
+int sysfs_trailing_slash(unsigned char *path)
+{
+	unsigned char *s = NULL;
+
+	if (path == NULL)
+		return 0;
+	s = &path[strlen(path)-1];
+	if (strncmp(s, "/", 1) == 0)
+		return 1;
+	return 0;
+}
+
 /*
  * sysfs_get_mnt_path: Gets the sysfs mount point.
  * @mnt_path: place to put "sysfs" mount point
@@ -226,6 +243,8 @@ struct dlist *sysfs_open_subsystem_list(unsigned char *name)
 		return NULL;
 	}
 
+	if (sysfs_trailing_slash(sysfs_path) == 0)
+		strcat(sysfs_path, "/");
 	strcat(sysfs_path, name);
 	dir = sysfs_open_directory(sysfs_path);
 	if (dir == NULL) {
@@ -261,7 +280,7 @@ struct dlist *sysfs_open_subsystem_list(unsigned char *name)
 	 * name requested here is "class", verify if "block" is supported on
 	 * this system and return the same.
 	 */ 
-	if (strcmp(name, SYSFS_CLASS_DIR) == 0) {
+	if (strcmp(name, SYSFS_CLASS_NAME) == 0) {
 		c = strstr(sysfs_path, SYSFS_CLASS_NAME);
 		if (c == NULL)
 			goto out;
@@ -301,10 +320,13 @@ struct dlist *sysfs_open_bus_devices_list(unsigned char *name)
 		return NULL;
 	}
 
-	strcat(sysfs_path, SYSFS_BUS_DIR);
+	if (sysfs_trailing_slash(sysfs_path) == 0)
+		strcat(sysfs_path, "/");
+	strcat(sysfs_path, SYSFS_BUS_NAME);
 	strcat(sysfs_path, "/");
 	strcat(sysfs_path, name);
-	strcat(sysfs_path, SYSFS_DEVICES_DIR);
+	strcat(sysfs_path, "/");
+	strcat(sysfs_path, SYSFS_DEVICES_NAME);
 	dir = sysfs_open_directory(sysfs_path);
 	if (dir == NULL) {
 		dprintf("Error opening sysfs_directory at %s\n", sysfs_path);
@@ -337,3 +359,71 @@ struct dlist *sysfs_open_bus_devices_list(unsigned char *name)
 	return list;
 }
 
+/**
+ * sysfs_path_is_dir: Check if the path supplied points to a directory
+ * @path: path to validate
+ * Returns 0 if path points to dir, 1 otherwise
+ */
+int sysfs_path_is_dir(const unsigned char *path)
+{
+	struct stat astats;
+
+	if (path == NULL) {
+		errno = EINVAL;
+		return 1;
+	}
+	if ((lstat(path, &astats)) != 0) {
+		dprintf("stat() failed\n");
+		return 1;
+	}
+	if (S_ISDIR(astats.st_mode))
+		return 0;
+
+	return 1;
+}
+
+/**
+ * sysfs_path_is_link: Check if the path supplied points to a link
+ * @path: path to validate
+ * Returns 0 if path points to link, 1 otherwise
+ */
+int sysfs_path_is_link(const unsigned char *path)
+{
+	struct stat astats;
+
+	if (path == NULL) {
+		errno = EINVAL;
+		return 1;
+	}
+	if ((lstat(path, &astats)) != 0) {
+		dprintf("stat() failed\n");
+		return 1;
+	}
+	if (S_ISLNK(astats.st_mode))
+		return 0;
+
+	return 1;
+}
+
+/**
+ * sysfs_path_is_file: Check if the path supplied points to a file
+ * @path: path to validate
+ * Returns 0 if path points to file, 1 otherwise
+ */
+int sysfs_path_is_file(const unsigned char *path)
+{
+	struct stat astats;
+
+	if (path == NULL) {
+		errno = EINVAL;
+		return 1;
+	}
+	if ((lstat(path, &astats)) != 0) {
+		dprintf("stat() failed\n");
+		return 1;
+	}
+	if (S_ISREG(astats.st_mode))
+		return 0;
+
+	return 1;
+}