On 9/7/22 8:56 PM, Mateusz Grzonka wrote:
Signed-off-by: Mateusz Grzonka<mateusz.grzonka@xxxxxxxxx>
Except for the comment style, the rested part is good to me.
Acked-by: Coly Li <colyli@xxxxxxx>
Thanks.
Coly Li
---
mdadm.h | 3 +++
util.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 49 insertions(+)
diff --git a/mdadm.h b/mdadm.h
index 09915a00..9183ee70 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1707,6 +1707,9 @@ extern int cluster_get_dlmlock(void);
extern int cluster_release_dlmlock(void);
extern void set_dlm_hooks(void);
+extern bool is_directory(const char *path);
+extern bool is_file(const char *path);
+
#define _ROUND_UP(val, base) (((val) + (base) - 1) & ~(base - 1))
#define ROUND_UP(val, base) _ROUND_UP(val, (typeof(val))(base))
#define ROUND_UP_PTR(ptr, base) ((typeof(ptr)) \
diff --git a/util.c b/util.c
index cc94f96e..97926f19 100644
--- a/util.c
+++ b/util.c
@@ -2375,3 +2375,49 @@ out:
close(fd_zero);
return ret;
}
+
+/**
+ * is_directory() - Checks if directory provided by path is indeed a regular directory.
+ * @path: directory path to be checked
+ *
+ * Doesn't accept symlinks.
+ *
+ * Return: true if is a directory, false if not
+ */
+bool is_directory(const char *path)
+{
+ struct stat st;
+
+ if (lstat(path, &st) != 0) {
+ pr_err("%s: %s\n", strerror(errno), path);
+ return false;
+ }
+
+ if (!S_ISDIR(st.st_mode))
+ return false;
+
+ return true;
+}
+
+/**
+ * is_file() - Checks if file provided by path is indeed a regular file.
+ * @path: file path to be checked
+ *
+ * Doesn't accept symlinks.
+ *
+ * Return: true if is a file, false if not
+ */
+bool is_file(const char *path)
+{
+ struct stat st;
+
+ if (lstat(path, &st) != 0) {
+ pr_err("%s: %s\n", strerror(errno), path);
+ return false;
+ }
+
+ if (!S_ISREG(st.st_mode))
+ return false;
+
+ return true;
+}
