summaryrefslogtreecommitdiff
path: root/libsysfs/sysfs_utils.c
diff options
context:
space:
mode:
authordsteklof@us.ibm.com <dsteklof@us.ibm.com>2003-12-15 21:53:28 -0800
committerGreg KH <gregkh@suse.de>2005-04-26 21:13:07 -0700
commit5d4754f19521568b775ba7a31465d3af192ce382 (patch)
tree7a012e2f8729e9667e7ba61a6417b2338973c209 /libsysfs/sysfs_utils.c
parent71896b56ee03a8f31c89263bbf5f4cb7201666be (diff)
[PATCH] pre-libsysfs-0.4.0 patch
I am sending you a pre-release patch. It's everything that's in our current CVS tree. It adds the functionality you've been looking for. Please play with this before checking it into your tree, I'd like to know if it's ok with you or if you find problems. I have tested this out with test.all and the perl regression test. Let me know what you think. Still need to do more testing for our work and add some more functions related to the changes. I've gone into namedev.c and udev-add.c to make the necessary changes in line with the library. I have not gone and edited any of the "extras". Changes: 1) Libsysfs object structures work more as handles now, their included directories or devices are labeled private. If you need attributes from a sysfs_class_device, call the available function and don't access the directory directly. Same holds true for a sysfs_class_device sysfs_device. Do not access the link directly but call the function sysfs_get_classdev_device() instead. We only populate entries upon request, makes things faster and uses less memory. 2) Added sysfs_get_classdev_parent() as requested. 3) Changed getpagesize to sysconf. 4) Added sysfs_refresh_attributes function for refreshing views of attribute lists. We still need to add refresh for links and subdirs. All udev needs to do is keep calling sysfs_get_classdev_attr() and that will internally call the refresh routine.
Diffstat (limited to 'libsysfs/sysfs_utils.c')
-rw-r--r--libsysfs/sysfs_utils.c73
1 files changed, 71 insertions, 2 deletions
diff --git a/libsysfs/sysfs_utils.c b/libsysfs/sysfs_utils.c
index 627e618dce..c2ce13433d 100644
--- a/libsysfs/sysfs_utils.c
+++ b/libsysfs/sysfs_utils.c
@@ -280,7 +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;
@@ -325,7 +325,8 @@ struct dlist *sysfs_open_bus_devices_list(unsigned char *name)
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);
@@ -358,3 +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;
+}