Changeset b14d9f9 in mainline for uspace/srv/vfs/vfs_register.c

Timestamp:

2017-05-05T17:37:36Z (6 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial

Children:

951f6b9e

Parents:

75b24cd

Message:

Mount should be able to print the list of available file system types.

File:

• uspace/srv/vfs/vfs_register.c (modified) (2 diffs)

uspace/srv/vfs/vfs_register.c

@@ -50 +50 @@
 #include <assert.h>
 #include <atomic.h>
+#include <vfs/vfs.h>
 #include "vfs.h"
 
@@ -340 +341 @@
 }
 
+/** Get list of file system types.
+ *
+ * @param fstypes Place to store list of file system types. Free using
+ *                vfs_fstypes_free().
+ *
+ * @return EOK on success or negative error code
+ */
+int vfs_get_fstypes(vfs_fstypes_t *fstypes)
+{
+        size_t size;
+        size_t count;
+        size_t l;
+
+        fibril_mutex_lock(&fs_list_lock);
+        
+        size = 0;
+        count = 0;
+        list_foreach(fs_list, fs_link, fs_info_t, fs) {
+                size += str_size(fs->vfs_info.name) + 1;
+                count++;
+        }
+        
+        if (size == 0)
+                size = 1;
+        
+        fstypes->buf = calloc(1, size);
+        if (fstypes->buf == NULL) {
+                fibril_mutex_unlock(&fs_list_lock);
+                return ENOMEM;
+        }
+        
+        fstypes->fstypes = calloc(sizeof(char *), count);
+        if (fstypes->fstypes == NULL) {
+                free(fstypes->buf);
+                fstypes->buf = NULL;
+                fibril_mutex_unlock(&fs_list_lock);
+                return ENOMEM;
+        }
+        
+        fstypes->size = size;
+        
+        size = 0; count = 0;
+        list_foreach(fs_list, fs_link, fs_info_t, fs) {
+                l = str_size(fs->vfs_info.name) + 1;
+                memcpy(fstypes->buf + size, fs->vfs_info.name, l);
+                fstypes->fstypes[count] = &fstypes->buf[size];
+                size += l;
+                count++;
+        }
+
+        fibril_mutex_unlock(&fs_list_lock);
+        return EOK;
+}
+
 /**
  * @}