-/* Download a guest file to a local temporary file. The file is
- * cached in the temporary directory, and is not downloaded again.
- *
- * The name of the temporary (downloaded) file is returned. The
- * caller must free the pointer, but does *not* need to delete the
- * temporary file. It will be deleted when the handle is closed.
- *
- * Refuse to download the guest file if it is larger than max_size.
- * On this and other errors, NULL is returned.
- *
- * There is actually one cache per 'struct inspect_fs *' in order
- * to handle the case of multiple roots.
- */
-char *
-guestfs___download_to_tmp (guestfs_h *g, struct inspect_fs *fs,
- const char *filename,
- const char *basename, int64_t max_size)
-{
- char *r;
- int fd;
- char devfd[32];
- int64_t size;
-
- /* Make the basename unique by prefixing it with the fs number. */
- if (asprintf (&r, "%s/%ld-%s", g->tmpdir, fs - g->fses, basename) == -1) {
- perrorf (g, "asprintf");
- return NULL;
- }
-
- /* If the file has already been downloaded, return. */
- if (access (r, R_OK) == 0)
- return r;
-
- /* Check size of remote file. */
- size = guestfs_filesize (g, filename);
- if (size == -1)
- /* guestfs_filesize failed and has already set error in handle */
- goto error;
- if (size > max_size) {
- error (g, _("size of %s is unreasonably large (%" PRIi64 " bytes)"),
- filename, size);
- goto error;
- }
-
- fd = open (r, O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY, 0600);
- if (fd == -1) {
- perrorf (g, "open: %s", r);
- goto error;
- }
-
- snprintf (devfd, sizeof devfd, "/dev/fd/%d", fd);
-
- if (guestfs_download (g, filename, devfd) == -1) {
- unlink (r);
- close (fd);
- goto error;
- }
-
- if (close (fd) == -1) {
- perrorf (g, "close: %s", r);
- unlink (r);
- goto error;
- }
-
- return r;
-
- error:
- free (r);
- return NULL;
-}
-
-struct inspect_fs *
-guestfs___search_for_root (guestfs_h *g, const char *root)
-{
- if (g->nr_fses == 0) {
- error (g, _("no inspection data: call guestfs_inspect_os first"));
- return NULL;
- }
-
- size_t i;
- struct inspect_fs *fs;
- for (i = 0; i < g->nr_fses; ++i) {
- fs = &g->fses[i];
- if (fs->is_root && STREQ (root, fs->device))
- return fs;
- }
-
- error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"),
- root);
- return NULL;
-}
-