svn commit: r194830 - projects/libprocstat/usr.bin/fstat

[Ulf Lilleengen]

Author: lulf
Date: Wed Jun 24 12:08:23 2009
New Revision: 194830
URL: http://svn.freebsd.org/changeset/base/194830

Log:
  - Add a version of fstat that uses the sysctls rather than kvm to retrieve
    information to see what fstat will require of the libprocstat library.

Added:
  projects/libprocstat/usr.bin/fstat/fstat_vnode.c   (contents, props changed)

Added: projects/libprocstat/usr.bin/fstat/fstat_vnode.c
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ projects/libprocstat/usr.bin/fstat/fstat_vnode.c	Wed Jun 24 12:08:23 2009	(r194830)
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 2009 Ulf Lilleengen
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+struct  filestat {
+	long	fsid;
+	long	fileid;
+	mode_t	mode;
+	u_long	size;
+	dev_t	rdev;
+};
+
+int
+main(int argc, char **argv)
+{
+	struct filestat *fs_buf;
+	struct filestat *fsp;
+	size_t size, numentries, i;
+
+	if (sysctlbyname("kern.fileinfo", NULL, &size, NULL, 0) == -1) {
+		fprintf(stderr, "error getting sysctl\n");
+		return (0);
+	}
+	fs_buf = malloc(size);
+	if (fs_buf == NULL) {
+		printf("OOPS\n");
+		return (-1);
+	}
+	printf("Data size: %d\n", size);
+	numentries = size / sizeof(struct filestat);
+	printf("Data entries: %d\n", numentries);
+	if (sysctlbyname("kern.fileinfo", fs_buf, &size, NULL, 0) == -1) {
+		fprintf(stderr, "error getting sysctl\n");
+		return (0);
+	}
+	fsp = fs_buf;
+	for (i = 0; i < numentries; i++) {
+		printf("FSID: %ld fileid %ld Size: %lu\n", fsp->fsid, fsp->fileid, fsp->size);
+
+		fsp++;
+	}
+}