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Diffstat (limited to 'libsysfs/sysfs_dir.c')
-rw-r--r--libsysfs/sysfs_dir.c227
1 files changed, 170 insertions, 57 deletions
diff --git a/libsysfs/sysfs_dir.c b/libsysfs/sysfs_dir.c
index c159db7af8..a60410ed28 100644
--- a/libsysfs/sysfs_dir.c
+++ b/libsysfs/sysfs_dir.c
@@ -195,7 +195,7 @@ int sysfs_write_attribute(struct sysfs_attribute *sysattr,
return -1;
}
if ((strncmp(sysattr->value, new_value, sysattr->len)) == 0) {
- dprintf("Attribute %s already has the requested value %s\n",
+ dprintf("Attr %s already has the requested value %s\n",
sysattr->name, new_value);
return 0;
}
@@ -274,7 +274,7 @@ int sysfs_read_attribute(struct sysfs_attribute *sysattr)
return -1;
}
#ifdef __KLIBC__
- pgsize = 0x1000;
+ pgsize = 0x1000;
#else
pgsize = sysconf(_SC_PAGESIZE);
#endif
@@ -468,6 +468,13 @@ struct sysfs_directory *sysfs_open_directory(const unsigned char *path)
errno = EINVAL;
return NULL;
}
+
+ if (sysfs_path_is_dir(path) != 0) {
+ dprintf("Invalid path directory %s\n", path);
+ errno = EINVAL;
+ return NULL;
+ }
+
sdir = alloc_directory();
if (sdir == NULL) {
dprintf("Error allocating directory %s\n", path);
@@ -514,39 +521,6 @@ struct sysfs_link *sysfs_open_link(const unsigned char *linkpath)
}
/**
- * sysfs_refresh_attributes: Refresh attributes list
- * @attrlist: list of attributes to refresh
- * Returns 0 on success, 1 on failure
- */
-int sysfs_refresh_attributes(struct dlist *attrlist)
-{
- struct sysfs_attribute *attr = NULL;
-
- if (attrlist == NULL) {
- errno = EINVAL;
- return 1;
- }
- dlist_for_each_data(attrlist, attr, struct sysfs_attribute) {
- if (attr->method & SYSFS_METHOD_SHOW) {
- if ((sysfs_read_attribute(attr)) != 0) {
- dprintf("Error reading attribute %s\n",
- attr->path);
- if ((sysfs_path_is_file(attr->path)) != 0) {
- dprintf("Attr %s no longer exists\n",
- attr->name);
- }
- }
- } else {
- if ((sysfs_path_is_file(attr->path)) != 0) {
- dprintf("Attr %s no longer exists\n",
- attr->name);
- }
- }
- }
- return 0;
-}
-
-/**
* add_attribute: open and add attribute at path to given directory
* @sysdir: directory to add attribute to
* @path: path to attribute
@@ -633,7 +607,6 @@ int sysfs_read_dir_attributes(struct sysfs_directory *sysdir)
{
DIR *dir = NULL;
struct dirent *dirent = NULL;
- struct stat astats;
unsigned char file_path[SYSFS_PATH_MAX];
int retval = 0;
@@ -655,11 +628,7 @@ int sysfs_read_dir_attributes(struct sysfs_directory *sysdir)
strncpy(file_path, sysdir->path, SYSFS_PATH_MAX);
strcat(file_path, "/");
strcat(file_path, dirent->d_name);
- if ((lstat(file_path, &astats)) != 0) {
- dprintf("stat failed\n");
- continue;
- }
- if (S_ISREG(astats.st_mode))
+ if ((sysfs_path_is_file(file_path)) == 0)
retval = add_attribute(sysdir, file_path);
}
closedir(dir);
@@ -675,7 +644,6 @@ int sysfs_read_dir_links(struct sysfs_directory *sysdir)
{
DIR *dir = NULL;
struct dirent *dirent = NULL;
- struct stat astats;
unsigned char file_path[SYSFS_PATH_MAX];
int retval = 0;
@@ -697,11 +665,7 @@ int sysfs_read_dir_links(struct sysfs_directory *sysdir)
strncpy(file_path, sysdir->path, SYSFS_PATH_MAX);
strcat(file_path, "/");
strcat(file_path, dirent->d_name);
- if ((lstat(file_path, &astats)) != 0) {
- dprintf("stat failed\n");
- continue;
- }
- if (S_ISLNK(astats.st_mode)) {
+ if ((sysfs_path_is_link(file_path)) == 0) {
retval = add_link(sysdir, file_path);
if (retval != 0)
break;
@@ -720,7 +684,6 @@ int sysfs_read_dir_subdirs(struct sysfs_directory *sysdir)
{
DIR *dir = NULL;
struct dirent *dirent = NULL;
- struct stat astats;
unsigned char file_path[SYSFS_PATH_MAX];
int retval = 0;
@@ -742,11 +705,7 @@ int sysfs_read_dir_subdirs(struct sysfs_directory *sysdir)
strncpy(file_path, sysdir->path, SYSFS_PATH_MAX);
strcat(file_path, "/");
strcat(file_path, dirent->d_name);
- if ((lstat(file_path, &astats)) != 0) {
- dprintf("stat failed\n");
- continue;
- }
- if (S_ISDIR(astats.st_mode))
+ if ((sysfs_path_is_dir(file_path)) == 0)
retval = add_subdirectory(sysdir, file_path);
}
closedir(dir);
@@ -802,6 +761,90 @@ int sysfs_read_directory(struct sysfs_directory *sysdir)
}
/**
+ * sysfs_refresh_dir_attributes: Refresh attributes list
+ * @sysdir: directory whose list of attributes to refresh
+ * Returns 0 on success, 1 on failure
+ */
+int sysfs_refresh_dir_attributes(struct sysfs_directory *sysdir)
+{
+ if (sysdir == NULL) {
+ errno = EINVAL;
+ return 1;
+ }
+ if ((sysfs_path_is_dir(sysdir->path)) != 0) {
+ dprintf("Invalid path to directory %s\n", sysdir->path);
+ errno = EINVAL;
+ return 1;
+ }
+ if (sysdir->attributes != NULL) {
+ dlist_destroy(sysdir->attributes);
+ sysdir->attributes = NULL;
+ }
+ if ((sysfs_read_dir_attributes(sysdir)) != 0) {
+ dprintf("Error refreshing attributes for directory %s\n",
+ sysdir->path);
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * sysfs_refresh_dir_links: Refresh links list
+ * @sysdir: directory whose list of links to refresh
+ * Returns 0 on success, 1 on failure
+ */
+int sysfs_refresh_dir_links(struct sysfs_directory *sysdir)
+{
+ if (sysdir == NULL) {
+ errno = EINVAL;
+ return 1;
+ }
+ if ((sysfs_path_is_dir(sysdir->path)) != 0) {
+ dprintf("Invalid path to directory %s\n", sysdir->path);
+ errno = EINVAL;
+ return 1;
+ }
+ if (sysdir->links != NULL) {
+ dlist_destroy(sysdir->links);
+ sysdir->links = NULL;
+ }
+ if ((sysfs_read_dir_links(sysdir)) != 0) {
+ dprintf("Error refreshing links for directory %s\n",
+ sysdir->path);
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * sysfs_refresh_dir_subdirs: Refresh subdirs list
+ * @sysdir: directory whose list of subdirs to refresh
+ * Returns 0 on success, 1 on failure
+ */
+int sysfs_refresh_dir_subdirs(struct sysfs_directory *sysdir)
+{
+ if (sysdir == NULL) {
+ errno = EINVAL;
+ return 1;
+ }
+ if ((sysfs_path_is_dir(sysdir->path)) != 0) {
+ dprintf("Invalid path to directory %s\n", sysdir->path);
+ errno = EINVAL;
+ return 1;
+ }
+ if (sysdir->subdirs != NULL) {
+ dlist_destroy(sysdir->subdirs);
+ sysdir->subdirs = NULL;
+ }
+ if ((sysfs_read_dir_subdirs(sysdir)) != 0) {
+ dprintf("Error refreshing subdirs for directory %s\n",
+ sysdir->path);
+ return 1;
+ }
+ return 0;
+}
+
+/**
* sysfs_get_directory_attribute: retrieves attribute attrname from current
* directory only
* @dir: directory to retrieve attribute from
@@ -826,19 +869,25 @@ struct sysfs_attribute *sysfs_get_directory_attribute
attr = (struct sysfs_attribute *)dlist_find_custom
(dir->attributes, attrname, dir_attribute_name_equal);
- if (attr == NULL) {
+ if (attr != NULL) {
+ if ((sysfs_read_attribute(attr)) != 0) {
+ dprintf("Error reading attribute %s\n", attr->name);
+ return NULL;
+ }
+ } else {
memset(new_path, 0, SYSFS_PATH_MAX);
strcpy(new_path, dir->path);
strcat(new_path, "/");
strcat(new_path, attrname);
if ((sysfs_path_is_file(new_path)) == 0) {
- if ((add_attribute(dir, new_path)) == 0) {
+ if ((add_attribute(dir, new_path)) == 0) {
attr = (struct sysfs_attribute *)
- dlist_find_custom(dir->attributes,
+ dlist_find_custom(dir->attributes,
attrname, dir_attribute_name_equal);
}
}
}
+
return attr;
}
@@ -855,9 +904,13 @@ struct sysfs_link *sysfs_get_directory_link
errno = EINVAL;
return NULL;
}
- if (dir->links == NULL)
+ if (dir->links == NULL) {
if ((sysfs_read_dir_links(dir) != 0) || (dir->links == NULL))
return NULL;
+ } else {
+ if ((sysfs_refresh_dir_links(dir)) != 0)
+ return NULL;
+ }
return (struct sysfs_link *)dlist_find_custom(dir->links,
linkname, dir_link_name_equal);
@@ -940,3 +993,63 @@ struct sysfs_link *sysfs_get_subdirectory_link(struct sysfs_directory *dir,
}
return NULL;
}
+
+/**
+ * sysfs_get_dir_attributes: returns dlist of directory attributes
+ * @dir: directory to retrieve attributes from
+ * returns dlist of attributes or NULL
+ */
+struct dlist *sysfs_get_dir_attributes(struct sysfs_directory *dir)
+{
+ if (dir == NULL) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ if (dir->attributes == NULL) {
+ if (sysfs_read_dir_attributes(dir) != 0)
+ return NULL;
+ }
+
+ return (dir->attributes);
+}
+
+/**
+ * sysfs_get_dir_links: returns dlist of directory links
+ * @dir: directory to return links for
+ * returns dlist of links or NULL
+ */
+struct dlist *sysfs_get_dir_links(struct sysfs_directory *dir)
+{
+ if (dir == NULL) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ if (dir->links == NULL) {
+ if (sysfs_read_dir_links(dir) != 0)
+ return NULL;
+ }
+
+ return (dir->links);
+}
+
+/**
+ * sysfs_get_dir_subdirs: returns dlist of directory subdirectories
+ * @dir: directory to return subdirs for
+ * returns dlist of subdirs or NULL
+ */
+struct dlist *sysfs_get_dir_subdirs(struct sysfs_directory *dir)
+{
+ if (dir == NULL) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ if (dir->subdirs == NULL) {
+ if (sysfs_read_dir_subdirs(dir) != 0)
+ return NULL;
+ }
+
+ return (dir->subdirs);
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-22 03:10:33 +0000