wimfs_link(), wimfs_symlink(), symlink fixes

[wimlib] / src / mount.c

diff --git a/src/mount.c b/src/mount.c
index 984666e6b6c2c88e35f0fd55e325694a4b0d888a..18a28558181025f715c449668b14a8c51ca7fa3b 100644 (file)
--- a/src/mount.c
+++ b/src/mount.c
@@ -716,6 +716,14 @@ done:
        close_message_queues();
 }
 
+static int wimfs_fgetattr(const char *path, struct stat *stbuf,
+                         struct fuse_file_info *fi)
+{
+       struct wimlib_fd *fd = (struct wimlib_fd*)fi->fh;
+       dentry_to_stbuf(fd->dentry, stbuf, w->lookup_table);
+       return 0;
+}
+
 static int wimfs_ftruncate(const char *path, off_t size,
                           struct fuse_file_info *fi)
 {
@@ -739,6 +747,45 @@ static int wimfs_getattr(const char *path, struct stat *stbuf)
        return 0;
 }
 
+/* Create a hard link */
+static int wimfs_link(const char *to, const char *from)
+{
+       struct dentry *to_dentry, *from_dentry, *from_dentry_parent;
+       const char *link_name;
+
+       to_dentry = get_dentry(w, to);
+       if (!to_dentry)
+               return -ENOENT;
+       if (!dentry_is_regular_file(to_dentry))
+               return -EPERM;
+
+       from_dentry_parent = get_parent_dentry(w, from);
+       if (!from_dentry_parent)
+               return -ENOENT;
+       if (!dentry_is_directory(from_dentry_parent))
+               return -ENOTDIR;
+
+       link_name = path_basename(from);
+       if (get_dentry_child_with_name(from_dentry_parent, link_name))
+               return -EEXIST;
+       from_dentry = clone_dentry(to_dentry);
+       if (!from_dentry)
+               return -ENOMEM;
+       if (change_dentry_name(from_dentry, link_name) != 0) {
+               FREE(from_dentry);
+               return -ENOMEM;
+       }
+       if (calculate_dentry_full_path(from_dentry, to_dentry) != 0) {
+               FREE(from_dentry->file_name);
+               FREE(from_dentry->file_name_utf8);
+               FREE(from_dentry);
+               return -ENOMEM;
+       }
+       list_add(&from_dentry->link_group_list, &to_dentry->link_group_list);
+       link_dentry(from_dentry, from_dentry_parent);
+       return 0;
+}
+
 /* 
  * Create a directory in the WIM.  
  * @mode is currently ignored.
@@ -1048,6 +1095,46 @@ static int wimfs_rmdir(const char *path)
        return 0;
 }
 
+static int wimfs_symlink(const char *to, const char *from)
+{
+       struct dentry *dentry_parent, *dentry;
+       const char *link_name;
+       
+       dentry_parent = get_parent_dentry(w, from);
+       if (!dentry_parent)
+               return -ENOENT;
+       if (!dentry_is_directory(dentry_parent))
+               return -ENOTDIR;
+
+       link_name = path_basename(from);
+
+       if (get_dentry_child_with_name(dentry_parent, link_name))
+               return -EEXIST;
+       dentry = new_dentry(link_name);
+       if (!dentry)
+               return -ENOMEM;
+
+       if (!change_dentry_name(dentry, link_name)) {
+               FREE(dentry);
+               return -ENOMEM;
+       }
+
+       if (calculate_dentry_full_path(dentry, NULL) != 0)
+               goto out_free_dentry;
+
+       dentry->attributes = FILE_ATTRIBUTE_REPARSE_POINT;
+       dentry->reparse_tag = WIM_IO_REPARSE_TAG_SYMLINK;
+
+       if (dentry_set_symlink(dentry, to, w->lookup_table) != 0)
+               goto out_free_dentry;
+
+       link_dentry(dentry, dentry_parent);
+       return 0;
+out_free_dentry:
+       free_dentry(dentry);
+       return -ENOMEM;
+}
+
 
 /* Reduce the size of a file */
 static int wimfs_truncate(const char *path, off_t size)
@@ -1171,11 +1258,13 @@ static int wimfs_write(const char *path, const char *buf, size_t size,
 }
 
 
-static struct fuse_operations wimfs_oper = {
+static struct fuse_operations wimfs_operations = {
        .access    = wimfs_access,
        .destroy   = wimfs_destroy,
+       .fgetattr  = wimfs_fgetattr,
        .ftruncate = wimfs_ftruncate,
        .getattr   = wimfs_getattr,
+       .link      = wimfs_link,
        .mkdir     = wimfs_mkdir,
        .mknod     = wimfs_mknod,
        .open      = wimfs_open,
@@ -1186,6 +1275,7 @@ static struct fuse_operations wimfs_oper = {
        .release   = wimfs_release,
        .rename    = wimfs_rename,
        .rmdir     = wimfs_rmdir,
+       .symlink   = wimfs_symlink,
        .truncate  = wimfs_truncate,
        .unlink    = wimfs_unlink,
        .utimens   = wimfs_utimens,
@@ -1267,7 +1357,7 @@ WIMLIBAPI int wimlib_mount(WIMStruct *wim, int image, const char *dir,
        w = wim;
        mount_flags = flags;
 
-       ret = fuse_main(argc, argv, &wimfs_oper, NULL);
+       ret = fuse_main(argc, argv, &wimfs_operations, NULL);
 
        return (ret == 0) ? 0 : WIMLIB_ERR_FUSE;
 }