statvfs support

2 files changed, 70 insertions, 2 deletions

diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index 338c7d525e4..87c98516d2e 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile.inc,v 1.83 2008/01/05 02:11:44 deraadt Exp $
+#	$OpenBSD: Makefile.inc,v 1.84 2008/03/16 19:44:34 otto Exp $
 #	$NetBSD: Makefile.inc,v 1.35 1995/10/16 23:49:07 jtc Exp $
 #	@(#)Makefile.inc	8.1 (Berkeley) 6/17/93
 
@@ -27,7 +27,7 @@ DPSRCS+= Lint_Ovfork.c Lint_brk.c Lint_exect.c Lint_fork.c \
 # with old syscall interfaces.
 SRCS+=	ftruncate.c lseek.c mquery.c mmap.c ptrace.c semctl.c truncate.c \
 	timer_create.c timer_delete.c timer_getoverrun.c timer_gettime.c \
-	timer_settime.c pread.c preadv.c pwrite.c pwritev.c
+	timer_settime.c pread.c preadv.c pwrite.c pwritev.c statvfs.c
 
 # stack protector helper functions
 SRCS+=	stack_protector.c
diff --git a/lib/libc/sys/statvfs.c b/lib/libc/sys/statvfs.c
new file mode 100644
index 00000000000..71bbccd2146
--- /dev/null
+++ b/lib/libc/sys/statvfs.c
@@ -0,0 +1,68 @@
+/*	$OpenBSD: statvfs.c,v 1.1 2008/03/16 19:44:34 otto Exp $	*/
+
+/*
+ * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/statvfs.h>
+
+static void
+cvt_statfs_to_statvfs(const struct statfs *fsp, struct statvfs *vfsp)
+{
+	vfsp->f_bsize = fsp->f_iosize; /* XXX */
+	vfsp->f_frsize = fsp->f_bsize; /* XXX */
+
+	vfsp->f_blocks = fsp->f_blocks;
+	vfsp->f_bfree = fsp->f_bfree;
+	vfsp->f_bavail = fsp->f_bavail < 0 ? 0 : fsp->f_bavail;
+
+	vfsp->f_files = fsp->f_files;
+	vfsp->f_ffree = fsp->f_ffree;
+	vfsp->f_favail = fsp->f_favail < 0 ? 0 : fsp->f_favail;
+
+	vfsp->f_fsid = fsp->f_fsid.val[0]; /* XXX */
+	vfsp->f_flag = 0;
+	if (fsp->f_flags & MNT_RDONLY)
+		vfsp->f_flag |= ST_RDONLY;
+	if (fsp->f_flags & MNT_NOSUID)
+		vfsp->f_flag |= ST_NOSUID;
+	vfsp->f_namemax = fsp->f_namemax;
+}
+
+int
+fstatvfs(int fd, struct statvfs *p)
+{
+	struct statfs sb;
+	int ret;
+
+	ret = fstatfs(fd, &sb);
+	if (ret == 0)
+		cvt_statfs_to_statvfs(&sb, p);
+	return (ret);
+}
+
+int statvfs(const char *path, struct statvfs *p)
+{
+	struct statfs sb;
+	int ret;
+
+	ret = statfs(path, &sb);
+	if (ret == 0)
+		cvt_statfs_to_statvfs(&sb, p);
+	return (ret);
+}
+