From: Sascha Wildner <saw@online.de>
Date: Thu, 20 Jun 2013 20:55:52 +0000 (+0200)
Subject: fstat(1): tmpfs support
X-Git-Tag: v3.7.0~919
X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/62e1ddd29c72cd531f86af0ec858cc5cfcd77ed7

fstat(1): tmpfs support
---

diff --git a/usr.bin/fstat/Makefile b/usr.bin/fstat/Makefile
index 41b8c2080d..b1f1162413 100644
--- a/usr.bin/fstat/Makefile
+++ b/usr.bin/fstat/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD: src/usr.bin/fstat/Makefile,v 1.4.2.1 2000/07/02 10:20:24 ps Exp $
 
 PROG=	fstat
-SRCS=	cd9660.c ext2fs.c fstat.c hammer.c msdosfs.c ntfs.c
+SRCS=	cd9660.c ext2fs.c fstat.c hammer.c msdosfs.c ntfs.c tmpfs.c
 CFLAGS+=-I${.CURDIR}/../../sys
 DPADD=	${LIBKVM}
 LDADD=	-lkvm
diff --git a/usr.bin/fstat/fstat.c b/usr.bin/fstat/fstat.c
index 6cb468d406..d71c31d3bf 100644
--- a/usr.bin/fstat/fstat.c
+++ b/usr.bin/fstat/fstat.c
@@ -471,6 +471,10 @@ vtrans(struct vnode *vp, struct nchandle *ncr, int i, int flag, off_t off)
 			if (!hammer_filestat(&vn, &fst))
 				badtype = "error";
 			break;
+		case VT_TMPFS:
+			if (!tmpfs_filestat(&vn, &fst))
+				badtype = "error";
+			break;
 		case VT_UFS:
 			if (!ufs_filestat(&vn, &fst))
 				badtype = "error";
diff --git a/usr.bin/fstat/fstat.h b/usr.bin/fstat/fstat.h
index 41b6ab6f3f..a97259cc22 100644
--- a/usr.bin/fstat/fstat.h
+++ b/usr.bin/fstat/fstat.h
@@ -91,6 +91,7 @@ int hammer_filestat(struct vnode *, struct filestat *);
 int isofs_filestat(struct vnode *, struct filestat *);
 int msdosfs_filestat(struct vnode *, struct filestat *);
 int ntfs_filestat(struct vnode *, struct filestat *);
+int tmpfs_filestat(struct vnode *, struct filestat *);
 ssize_t kread(const void *, void *, size_t);
 
 #endif /* __FSTAT_H__ */
diff --git a/usr.bin/fstat/tmpfs.c b/usr.bin/fstat/tmpfs.c
new file mode 100644
index 0000000000..6e8b60df56
--- /dev/null
+++ b/usr.bin/fstat/tmpfs.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2013 The DragonFly Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions 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.
+ * 3. Neither the name of The DragonFly Project nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific, prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``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
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS 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/param.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+
+#include <kvm.h>
+#include <stdio.h>
+
+#define _KERNEL_STRUCTURES
+#include <sys/vnode.h>
+#include <vfs/tmpfs/tmpfs.h>
+#undef _KERNEL_STRUCTURES
+
+#include "fstat.h"
+
+int
+tmpfs_filestat(struct vnode *vp, struct filestat *fsp)
+{
+	struct tmpfs_node ino;
+	struct mount mount_l;
+
+	if (!kread(VTOI(vp), &ino, sizeof(ino))) {
+		dprintf(stderr, "can't read struct tmpfs_node at %p for pid %d\n",
+		    VTOI(vp), Pid);
+		return 0;
+	}
+	if (!kread(vp->v_mount, &mount_l, sizeof(struct mount))) {
+		dprintf(stderr, "can't read struct mount at %p for pid %d\n",
+		    vp->v_mount, Pid);
+		return 0;
+	}
+	fsp->fsid = mount_l.mnt_stat.f_fsid.val[0];
+	fsp->mode = ino.tn_mode | mtrans(ino.tn_type);
+	fsp->fileid = ino.tn_id;
+	fsp->size = ino.tn_size;
+	fsp->rdev = ino.tn_spec.tn_rdev;
+	return 1;
+}