1 files changed, 95 insertions, 0 deletions
diff --git a/lib/libufs/inode.c b/lib/libufs/inode.c
new file mode 100644
index 0000000..bce5567
--- /dev/null
+++ b/lib/libufs/inode.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2002 Juli Mallett.  All rights reserved.
+ *
+ * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
+ * FreeBSD project.  Redistribution and use in source and binary forms, with
+ * or without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistribution of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistribution in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/disklabel.h>
+#include <sys/stat.h>
+
+#include <ufs/ufs/ufsmount.h>
+#include <ufs/ufs/dinode.h>
+#include <ufs/ffs/fs.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <libufs.h>
+
+int
+getino(struct uufsd *disk, void **dino, ino_t inode, int *mode)
+{
+	ino_t min, max;
+	caddr_t inoblock;
+	struct ufs1_dinode *dp1;
+	struct ufs2_dinode *dp2;
+	struct fs *fs;
+
+	ERROR(disk, NULL);
+
+	fs = &disk->d_fs;
+	inoblock = disk->d_inoblock;
+	min = disk->d_inomin;
+	max = disk->d_inomax;
+
+	if (inoblock == NULL) {
+		inoblock = malloc(fs->fs_bsize);
+		if (inoblock == NULL) {
+			ERROR(disk, "unable to allocate inode block");
+			return -1;
+		}
+		disk->d_inoblock = inoblock;
+	}
+	if (inode >= min && inode < max)
+		goto gotit;
+	bread(disk, fsbtodb(fs, ino_to_fsba(fs, inode)), inoblock,
+	    fs->fs_bsize);
+	disk->d_inomin = min = inode - (inode & INOPB(fs));
+	disk->d_inomax = max = min + INOPB(fs);
+gotit:	switch (disk->d_ufs) {
+	case 1:
+		dp1 = &((struct ufs1_dinode *)inoblock)[inode - min];
+		*mode = dp1->di_mode & IFMT;
+		*dino = dp1;
+		return 0;
+	case 2:
+		dp2 = &((struct ufs2_dinode *)inoblock)[inode - min];
+		*mode = dp2->di_mode & IFMT;
+		*dino = dp2;
+		return 0;
+	default:
+		break;
+	}
+	ERROR(disk, "unknown UFS filesystem type");
+	return -1;
+}