[Glibc-bsd-commits] r4031 - trunk/glibc-ports/kfreebsd/sys
Robert Millan
rmh at alioth.debian.org
Sun Jan 29 00:51:36 UTC 2012
Author: rmh
Date: 2012-01-29 00:51:36 +0000 (Sun, 29 Jan 2012)
New Revision: 4031
Modified:
trunk/glibc-ports/kfreebsd/sys/mount.h
Log:
Add getvfsbyname
Modified: trunk/glibc-ports/kfreebsd/sys/mount.h
===================================================================
--- trunk/glibc-ports/kfreebsd/sys/mount.h 2012-01-28 23:37:04 UTC (rev 4030)
+++ trunk/glibc-ports/kfreebsd/sys/mount.h 2012-01-29 00:51:36 UTC (rev 4031)
@@ -29,6 +29,14 @@
#include <sys/ucred.h>
#include <sys/queue.h>
+/* For getvfsbyname. */
+#include <stddef.h>
+#include <sys/mount.h>
+#include <sys/sysctl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
/*
* File identifier.
* These are unique per filesystem on a single machine.
@@ -345,9 +353,70 @@
int nmount(struct iovec *, unsigned int, int);
int unmount(const char *, int);
-/* C library stuff */
-int getvfsbyname(const char *, struct xvfsconf *);
+/*
+ * Copyright (c) 1995
+ * The Regents of the University of California. 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.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ */
+/*
+ * Given a filesystem name, determine if it is resident in the kernel,
+ * and if it is resident, return its xvfsconf structure.
+ */
+static inline int
+getvfsbyname(fsname, vfcp)
+ const char *fsname;
+ struct xvfsconf *vfcp;
+{
+ struct xvfsconf *xvfsp;
+ size_t buflen;
+ int cnt, i;
+
+ if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0)
+ return (-1);
+ xvfsp = malloc(buflen);
+ if (xvfsp == NULL)
+ return (-1);
+ if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
+ free(xvfsp);
+ return (-1);
+ }
+ cnt = buflen / sizeof(struct xvfsconf);
+ for (i = 0; i < cnt; i++) {
+ if (strcmp(fsname, xvfsp[i].vfc_name) == 0) {
+ memcpy(vfcp, xvfsp + i, sizeof(struct xvfsconf));
+ free(xvfsp);
+ return (0);
+ }
+ }
+ free(xvfsp);
+ errno = ENOENT;
+ return (-1);
+}
+
/* getfsstat() appears in BSD 4.4. A variant of this API is found on OSF/1,
but on that system the user also needs to include <sys/fs_types.h>. */
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