From e76f679c153fe0e6f6cd51b95d1683674d96fd05 Mon Sep 17 00:00:00 2001
From: mickey <mickey@openbsd.org>
Date: Sun, 16 Feb 1997 14:39:37 +0000
Subject: [PATCH] opendir, readdir, closedir (define NO_READDIR, if none
 required) minor fix in cd9660 only ufs working, all the others are on the
 list....

---
 sys/lib/libsa/cd9660.c | 19 ++++++++++++++--
 sys/lib/libsa/cd9660.h |  2 ++
 sys/lib/libsa/nfs.c    | 16 +++++++++++++-
 sys/lib/libsa/nullfs.c | 40 ++++++++++++++++++++-------------
 sys/lib/libsa/ufs.c    | 50 +++++++++++++++++++++++++++++++++++++++++-
 5 files changed, 108 insertions(+), 19 deletions(-)

diff --git a/sys/lib/libsa/cd9660.c b/sys/lib/libsa/cd9660.c
index 2ee8ac91f0f..031ec03edb8 100644
--- a/sys/lib/libsa/cd9660.c
+++ b/sys/lib/libsa/cd9660.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cd9660.c,v 1.2 1996/12/12 08:19:25 mickey Exp $	*/
+/*	$OpenBSD: cd9660.c,v 1.3 1997/02/16 14:39:38 mickey Exp $	*/
 /*	$NetBSD: cd9660.c,v 1.1 1996/09/30 16:01:19 ws Exp $	*/
 
 /*
@@ -162,6 +162,7 @@ cd9660_open(path, f)
 	
 	/* First find the volume descriptor */
 	buf = alloc(buf_size = ISO_DEFAULT_BLOCK_SIZE);
+	dp = (struct iso_directory_record *)buf;
 	vd = buf;
 	for (bno = 16;; bno++) {
 		twiddle();
@@ -232,7 +233,7 @@ cd9660_open(path, f)
 
 	/* Now bno has the start of the directory that supposedly contains the file */
 	bno--;
-	dsize = 1;		/* Something stupid, but > 0			XXX */
+	dsize = 1;		/* Something stupid, but > 0	XXX */
 	for (psize = 0; psize < dsize;) {
 		if (!(psize % ISO_DEFAULT_BLOCK_SIZE)) {
 			bno++;
@@ -398,3 +399,17 @@ cd9660_stat(f, sb)
 	sb->st_size = fp->size;
 	return 0;
 }
+
+/*
+ * Not implemented.
+ */
+#ifndef NO_READDIR
+int
+cd9660_readdir(f, name)
+	struct open_file *f;
+	char *name;
+{
+	return (EROFS);
+}
+#endif
+
diff --git a/sys/lib/libsa/cd9660.h b/sys/lib/libsa/cd9660.h
index 6031323a380..94e9f2ed241 100644
--- a/sys/lib/libsa/cd9660.h
+++ b/sys/lib/libsa/cd9660.h
@@ -1,3 +1,4 @@
+/*	$OpenBSD: cd9660.h,v 1.2 1997/02/16 14:39:39 mickey Exp $	*/
 /*	$NetBSD: cd9660.h,v 1.1 1996/09/30 16:01:20 ws Exp $	*/
 
 /*
@@ -39,3 +40,4 @@ int	cd9660_write __P((struct open_file *f, void *buf,
 			  size_t size, size_t *resid));
 off_t	cd9660_seek __P((struct open_file *f, off_t offset, int where));
 int	cd9660_stat __P((struct open_file *f, struct stat *sb));
+int	cd9660_readdir __P((struct open_file *f, char *name));
diff --git a/sys/lib/libsa/nfs.c b/sys/lib/libsa/nfs.c
index a09d4698d0a..9e266aa86e7 100644
--- a/sys/lib/libsa/nfs.c
+++ b/sys/lib/libsa/nfs.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: nfs.c,v 1.6 1996/12/08 15:15:52 niklas Exp $	*/
+/*	$OpenBSD: nfs.c,v 1.7 1997/02/16 14:39:39 mickey Exp $	*/
 /*	$NetBSD: nfs.c,v 1.19 1996/10/13 02:29:04 christos Exp $	*/
 
 /*-
@@ -42,6 +42,7 @@
 #include "nfsv2.h"
 
 #include "stand.h"
+#include "saerrno.h"
 #include "net.h"
 #include "netif.h"
 #include "nfs.h"
@@ -639,3 +640,16 @@ nfs_stat(f, sb)
 
 	return (0);
 }
+
+/*
+ * Not implemented.
+ */
+#ifndef NO_READDIR
+int
+nfs_readdir(f, name)
+	struct open_file *f;
+	char *name;
+{
+	return (EROFS);
+}
+#endif
diff --git a/sys/lib/libsa/nullfs.c b/sys/lib/libsa/nullfs.c
index c7a55f92e7d..71f52022083 100644
--- a/sys/lib/libsa/nullfs.c
+++ b/sys/lib/libsa/nullfs.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: nullfs.c,v 1.2 1996/09/23 14:19:00 mickey Exp $	*/
+/*	$OpenBSD: nullfs.c,v 1.3 1997/02/16 14:39:38 mickey Exp $	*/
 /*	$NetBSD: open.c,v 1.9 1995/09/19 09:16:52 thorpej Exp $	*/
 
 /*-
@@ -70,37 +70,47 @@
 /*
  * Null filesystem
  */
-int	null_open (char *path, struct open_file *f)
+int
+null_open (char *path, struct open_file *f)
 {
-	errno  = EIO;
-	return -1;
+	return EIO;
 }
 
-int	null_close(struct open_file *f)
+int
+null_close(struct open_file *f)
 {
 	return 0;
 }
 
-ssize_t	null_read (struct open_file *f, void *buf, size_t size, size_t *resid)
+int
+null_read (struct open_file *f, void *buf, size_t size, size_t *resid)
 {
-	errno = EIO;
-	return -1;
+	return EIO;
 }
 
-ssize_t	null_write (struct open_file *f, void *buf, size_t size, size_t *resid)
+int
+null_write (struct open_file *f, void *buf, size_t size, size_t *resid)
 {
-	errno = EIO;
-	return -1;
+	return EIO;
 }
 
-off_t	null_seek (struct open_file *f, off_t offset, int where)
+off_t
+null_seek (struct open_file *f, off_t offset, int where)
 {
 	errno = EIO;
 	return -1;
 }
 
-int	null_stat (struct open_file *f, struct stat *sb)
+int
+null_stat (struct open_file *f, struct stat *sb)
 {
-	errno = EIO;
-	return -1;
+	return EIO;
+}
+
+#ifndef NO_READDIR
+int
+null_readdir (struct open_file *f, char *name)
+{
+	return EIO;
 }
+#endif
diff --git a/sys/lib/libsa/ufs.c b/sys/lib/libsa/ufs.c
index 8adb7048477..dd41f56a9c9 100644
--- a/sys/lib/libsa/ufs.c
+++ b/sys/lib/libsa/ufs.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ufs.c,v 1.8 1996/12/08 15:15:58 niklas Exp $	*/
+/*	$OpenBSD: ufs.c,v 1.9 1997/02/16 14:39:37 mickey Exp $	*/
 /*	$NetBSD: ufs.c,v 1.16 1996/09/30 16:01:22 ws Exp $	*/
 
 /*-
@@ -679,6 +679,54 @@ ufs_stat(f, sb)
 	return (0);
 }
 
+#ifndef	NO_READDIR
+int
+ufs_readdir(f, name)
+	struct open_file *f;
+	char	*name;
+{
+	register struct file *fp = (struct file *)f->f_fsdata;
+	char *buf;
+	size_t buf_size;
+	register struct direct *dp, *edp;
+	int rc, namlen;
+
+	if (name == NULL)
+		fp->f_seekp = 0;
+	else {
+			/* end of dir */
+		if (fp->f_seekp >= fp->f_di.di_size) {
+			*name = '\0';
+			return 0;
+		}
+
+		do {
+			if ((rc = buf_read_file(f, &buf, &buf_size)) != 0)
+				return rc;
+
+			dp = (struct direct *)buf;
+			edp = (struct direct *)(buf + buf_size);
+			while (dp < edp && dp->d_ino == (ino_t)0)
+				dp = (struct direct *)((char *)dp + dp->d_reclen);
+			fp->f_seekp += buf_size -
+				((u_int8_t *)edp - (u_int8_t *)dp);
+		} while (dp >= edp);
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+		if (fp->f_fs->fs_maxsymlinklen <= 0)
+			namlen = dp->d_type;
+		else
+#endif
+			namlen = dp->d_namlen;
+		strncpy(name, dp->d_name, namlen + 1);
+
+		fp->f_seekp += dp->d_reclen;
+	}
+
+	return 0;
+}
+#endif
+
 #ifdef COMPAT_UFS
 /*
  * Sanity checks for old file systems.
-- 
2.20.1