volume_id: rename subdirectory

1 files changed, 231 insertions, 0 deletions

diff --git a/extras/volume_id/lib/volume_id.c b/extras/volume_id/lib/volume_id.c
new file mode 100644
index 0000000000..073ad79c77
--- /dev/null
+++ b/extras/volume_id/lib/volume_id.c
@@ -0,0 +1,231 @@
+/*
+ * volume_id - reads volume label and uuid
+ *
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *	This program is free software; you can redistribute it and/or modify it
+ *	under the terms of the GNU General Public License as published by the
+ *	Free Software Foundation version 2 of the License.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <errno.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#include "libvolume_id.h"
+#include "util.h"
+
+/* the user can overwrite this log function */
+static void default_log(int priority, const char *file, int line, const char *format, ...)
+{
+	return;
+}
+
+volume_id_log_fn volume_id_log = default_log;
+
+int volume_id_probe_raid(struct volume_id *id, uint64_t off, uint64_t size)
+{
+	if (id == NULL)
+		return -EINVAL;
+
+	/* probe for raid first, cause fs probes may be successful on raid members */
+	if (size) {
+		if (volume_id_probe_linux_raid(id, off, size) == 0)
+			goto found;
+
+		if (volume_id_probe_intel_software_raid(id, off, size) == 0)
+			goto found;
+
+		if (volume_id_probe_lsi_mega_raid(id, off, size) == 0)
+			goto found;
+
+		if (volume_id_probe_via_raid(id, off, size) == 0)
+			goto found;
+
+		if (volume_id_probe_silicon_medley_raid(id, off, size) == 0)
+			goto found;
+
+		if (volume_id_probe_nvidia_raid(id, off, size) == 0)
+			goto found;
+
+		if (volume_id_probe_promise_fasttrack_raid(id, off, size) == 0)
+			goto found;
+
+		if (volume_id_probe_highpoint_45x_raid(id, off, size) == 0)
+			goto found;
+	}
+
+	if (volume_id_probe_lvm1(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_lvm2(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_highpoint_37x_raid(id, off) == 0)
+		goto found;
+
+	return -1;
+
+found:
+	/* If recognized, we free the allocated buffers */
+	volume_id_free_buffer(id);
+	return 0;
+}
+
+int volume_id_probe_filesystem(struct volume_id *id, uint64_t off, uint64_t size)
+{
+	if (id == NULL)
+		return -EINVAL;
+
+	if (volume_id_probe_luks(id, off) == 0)
+		goto found;
+
+	/* signature in the first block, only small buffer needed */
+	if (volume_id_probe_vfat(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_xfs(id, off) == 0)
+		goto found;
+
+	/* fill buffer with maximum */
+	volume_id_get_buffer(id, 0, SB_BUFFER_SIZE);
+
+	if (volume_id_probe_linux_swap(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_ext(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_reiserfs(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_jfs(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_udf(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_iso9660(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_hfs_hfsplus(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_ufs(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_ntfs(id, off)  == 0)
+		goto found;
+
+	if (volume_id_probe_cramfs(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_romfs(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_hpfs(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_sysv(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_minix(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_ocfs1(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_ocfs2(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_vxfs(id, off) == 0)
+		goto found;
+
+	if (volume_id_probe_squashfs(id, off) == 0)
+		goto found;
+
+	return -1;
+
+found:
+	/* If recognized, we free the allocated buffers */
+	volume_id_free_buffer(id);
+	return 0;
+}
+
+int volume_id_probe_all(struct volume_id *id, uint64_t off, uint64_t size)
+{
+	if (id == NULL)
+		return -EINVAL;
+
+	if (volume_id_probe_raid(id, off, size) == 0)
+		return 0;
+
+	if (volume_id_probe_filesystem(id, off, size) == 0)
+		return 0;
+
+	return -1;
+}
+
+/* open volume by already open file descriptor */
+struct volume_id *volume_id_open_fd(int fd)
+{
+	struct volume_id *id;
+
+	id = malloc(sizeof(struct volume_id));
+	if (id == NULL)
+		return NULL;
+	memset(id, 0x00, sizeof(struct volume_id));
+
+	id->fd = fd;
+
+	return id;
+}
+
+/* open volume by device node */
+struct volume_id *volume_id_open_node(const char *path)
+{
+	struct volume_id *id;
+	int fd;
+
+	fd = open(path, O_RDONLY);
+	if (fd < 0) {
+		dbg("unable to open '%s'", path);
+		return NULL;
+	}
+
+	id = volume_id_open_fd(fd);
+	if (id == NULL)
+		return NULL;
+
+	/* close fd on device close */
+	id->fd_close = 1;
+
+	return id;
+}
+
+void volume_id_close(struct volume_id *id)
+{
+	if (id == NULL)
+		return;
+
+	if (id->fd_close != 0)
+		close(id->fd);
+
+	volume_id_free_buffer(id);
+
+	free(id);
+}