proc: move /proc/filesystems to fs/filesystems.c
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
diff --git a/fs/filesystems.c b/fs/filesystems.c
index f37f872..d0e20ce 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -8,6 +8,8 @@
#include <linux/syscalls.h>
#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/kmod.h>
#include <linux/init.h>
@@ -214,6 +216,43 @@
return len;
}
+#ifdef CONFIG_PROC_FS
+static int filesystems_proc_show(struct seq_file *m, void *v)
+{
+ struct file_system_type * tmp;
+
+ read_lock(&file_systems_lock);
+ tmp = file_systems;
+ while (tmp) {
+ seq_printf(m, "%s\t%s\n",
+ (tmp->fs_flags & FS_REQUIRES_DEV) ? "" : "nodev",
+ tmp->name);
+ tmp = tmp->next;
+ }
+ read_unlock(&file_systems_lock);
+ return 0;
+}
+
+static int filesystems_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, filesystems_proc_show, NULL);
+}
+
+static const struct file_operations filesystems_proc_fops = {
+ .open = filesystems_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init proc_filesystems_init(void)
+{
+ proc_create("filesystems", 0, NULL, &filesystems_proc_fops);
+ return 0;
+}
+module_init(proc_filesystems_init);
+#endif
+
struct file_system_type *get_fs_type(const char *name)
{
struct file_system_type *fs;