OpenSolaris Launch

1 files changed, 164 insertions, 0 deletions

diff --git a/usr/src/uts/common/syscall/statfs.c b/usr/src/uts/common/syscall/statfs.c
new file mode 100644
index 0000000000..5d8c2cd395
--- /dev/null
+++ b/usr/src/uts/common/syscall/statfs.c
@@ -0,0 +1,164 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+/*
+ * Portions of this source code were derived from Berkeley 4.3 BSD
+ * under license from the Regents of the University of California.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/inttypes.h>
+#include <sys/types.h>
+#include <sys/t_lock.h>
+#include <sys/param.h>
+#include <sys/errno.h>
+#include <sys/fstyp.h>
+#include <sys/systm.h>
+#include <sys/vfs.h>
+#include <sys/statfs.h>
+#include <sys/vnode.h>
+#include <sys/file.h>
+#include <sys/cmn_err.h>
+#include <sys/debug.h>
+#include <sys/pathname.h>
+
+#include <vm/page.h>
+
+#if defined(_SYSCALL32_IMPL) || defined(_ILP32)
+
+/*
+ * statfs(2) and fstatfs(2) have been replaced by statvfs(2) and
+ * fstatvfs(2) and will be removed from the system in a near-future
+ * release.
+ *
+ * Supported here purely for 32-bit compatibility.
+ */
+
+static int cstatfs(struct vfs *, struct statfs32 *, int);
+
+int
+statfs32(char *fname, struct statfs32 *sbp, int32_t len, int32_t fstyp)
+{
+	vnode_t *vp;
+	int error;
+
+lookup:
+	if (error = lookupname(fname, UIO_USERSPACE, FOLLOW, NULLVPP, &vp)) {
+		if (error == ESTALE)
+			goto lookup;
+		return (set_errno(error));
+	}
+	if (fstyp != 0)
+		error = EINVAL;
+	else
+		error = cstatfs(vp->v_vfsp, sbp, len);
+	VN_RELE(vp);
+	if (error) {
+		if (error == ESTALE)
+			goto lookup;
+		return (set_errno(error));
+	}
+	return (0);
+}
+
+int
+fstatfs32(int32_t fdes, struct statfs32 *sbp, int32_t len, int32_t fstyp)
+{
+	struct file *fp;
+	int error;
+
+	if (fstyp != 0)
+		return (set_errno(EINVAL));
+	if ((fp = getf(fdes)) == NULL)
+		return (set_errno(EBADF));
+	error = cstatfs(fp->f_vnode->v_vfsp, sbp, len);
+	releasef(fdes);
+	if (error)
+		return (set_errno(error));
+	return (0);
+}
+
+/*
+ * Common routine for fstatfs and statfs.
+ */
+static int
+cstatfs(struct vfs *vfsp, struct statfs32 *sbp, int len)
+{
+	struct statfs32 sfs;
+	struct statvfs64 svfs;
+	int error, i;
+	char *cp, *cp2;
+	struct vfssw *vswp;
+
+	if (len < 0 || len > sizeof (struct statfs))
+		return (EINVAL);
+	if (error = VFS_STATVFS(vfsp, &svfs))
+		return (error);
+
+	if (svfs.f_blocks > UINT32_MAX || svfs.f_bfree > UINT32_MAX ||
+	    svfs.f_files > UINT32_MAX || svfs.f_ffree > UINT32_MAX)
+	    return (EOVERFLOW);
+	/*
+	 * Map statvfs fields into the old statfs structure.
+	 */
+	bzero(&sfs, sizeof (sfs));
+	sfs.f_bsize = svfs.f_bsize;
+	sfs.f_frsize = (svfs.f_frsize == svfs.f_bsize) ? 0 : svfs.f_frsize;
+	sfs.f_blocks = svfs.f_blocks * (svfs.f_frsize / 512);
+	sfs.f_bfree = svfs.f_bfree * (svfs.f_frsize / 512);
+	sfs.f_files = svfs.f_files;
+	sfs.f_ffree = svfs.f_ffree;
+
+	cp = svfs.f_fstr;
+	cp2 = sfs.f_fname;
+	i = 0;
+	while (i++ < sizeof (sfs.f_fname))
+		if (*cp != '\0')
+			*cp2++ = *cp++;
+		else
+			*cp2++ = '\0';
+	while (*cp != '\0' &&
+	    i++ < (sizeof (svfs.f_fstr) - sizeof (sfs.f_fpack)))
+		cp++;
+	(void) strncpy(sfs.f_fpack, cp + 1, sizeof (sfs.f_fpack));
+	if ((vswp = vfs_getvfssw(svfs.f_basetype)) == NULL)
+		sfs.f_fstyp = 0;
+	else {
+		sfs.f_fstyp = vswp - vfssw;
+		vfs_unrefvfssw(vswp);
+	}
+
+	if (copyout(&sfs, sbp, len))
+		return (EFAULT);
+
+	return (0);
+}
+
+#endif	/* _SYSCALL32_IMPL || _ILP32 */