Index: trunk/src/emx/src/lib/bsd/gen/statvfs.c
===================================================================
--- trunk/src/emx/src/lib/bsd/gen/statvfs.c	(revision 1494)
+++ trunk/src/emx/src/lib/bsd/gen/statvfs.c	(revision 1494)
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2002 Massachusetts Institute of Technology
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that both the above copyright notice and this
+ * permission notice appear in all copies, that both the above
+ * copyright notice and this permission notice appear in all
+ * supporting documentation, and that the name of M.I.T. not be used
+ * in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.  M.I.T. makes
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
+ * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
+ * SHALL M.I.T. 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: src/lib/libc/gen/statvfs.c,v 1.2 2002/09/06 11:23:40 tjr Exp $");
+
+#include "namespace.h"
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/statvfs.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <unistd.h>
+#include "un-namespace.h"
+
+static int	sfs2svfs(const struct statfs *from, struct statvfs *to);
+
+int
+fstatvfs(int fd, struct statvfs *result)
+{
+	struct statfs sfs;
+	int rv;
+	long pcval;
+
+	rv = _fstatfs(fd, &sfs);
+	if (rv != 0)
+		return (rv);
+
+	rv = sfs2svfs(&sfs, result);
+	if (rv != 0)
+		return (rv);
+
+	/*
+	 * Whether pathconf's -1 return means error or unlimited does not
+	 * make any difference in this best-effort implementation.
+	 */
+	pcval = _fpathconf(fd, _PC_NAME_MAX);
+	if (pcval == -1)
+		result->f_namemax = ~0UL;
+	else
+		result->f_namemax = (unsigned long)pcval;
+	return (0);
+}
+
+int
+statvfs(const char * __restrict path, struct statvfs * __restrict result)
+{
+	struct statfs sfs;
+	int rv;
+	long pcval;
+
+	rv = statfs(path, &sfs);
+	if (rv != 0)
+		return (rv);
+
+	sfs2svfs(&sfs, result);
+
+	/*
+	 * Whether pathconf's -1 return means error or unlimited does not
+	 * make any difference in this best-effort implementation.
+	 */
+	pcval = pathconf(path, _PC_NAME_MAX);
+	if (pcval == -1)
+		result->f_namemax = ~0UL;
+	else
+		result->f_namemax = (unsigned long)pcval;
+	return (0);
+}
+
+static int
+sfs2svfs(const struct statfs *from, struct statvfs *to)
+{
+	static const struct statvfs zvfs;
+
+	*to = zvfs;
+
+	if (from->f_flags & MNT_RDONLY)
+		to->f_flag |= ST_RDONLY;
+	if (from->f_flags & MNT_NOSUID)
+		to->f_flag |= ST_NOSUID;
+
+	/* XXX should we clamp negative values? */
+#define COPY(field) \
+	do { \
+		to->field = from->field; \
+		if (from->field != to->field) { \
+			errno = EOVERFLOW; \
+			return (-1); \
+		} \
+	} while(0)
+
+	COPY(f_bavail);
+	COPY(f_bfree);
+	COPY(f_blocks);
+	COPY(f_ffree);
+	COPY(f_files);
+	to->f_bsize = from->f_iosize;
+	to->f_frsize = from->f_bsize;
+	to->f_favail = to->f_ffree;
+	return (0);
+}
+								 
+#ifdef MAIN
+#include <err.h>
+#include <stdint.h>
+#include <stdio.h>
+
+int
+main(int argc, char **argv)
+{
+	struct statvfs buf;
+
+	if (statvfs(argv[1], &buf) < 0)
+		err(1, "statvfs");
+
+#define SHOW(field) \
+	printf(#field ": %ju\n", (uintmax_t)buf.field)
+
+	SHOW(f_bavail);
+	SHOW(f_bfree);
+	SHOW(f_blocks);
+	SHOW(f_favail);
+	SHOW(f_ffree);
+	SHOW(f_files);
+	SHOW(f_bsize);
+	SHOW(f_frsize);
+	SHOW(f_namemax);
+	printf("f_flag: %lx\n", (unsigned long)buf.f_flag);
+
+	return 0;
+}
+
+#endif /* MAIN */
