1 files changed, 178 insertions, 0 deletions
diff --git a/lib/libc/gen/getvfsent.c b/lib/libc/gen/getvfsent.c
new file mode 100644
index 0000000..2b8998c
--- /dev/null
+++ b/lib/libc/gen/getvfsent.c
@@ -0,0 +1,178 @@
+/*
+ * getvfsent.c - get a listing of installed filesystems
+ * Written September 1994 by Garrett A. Wollman
+ * This file is in the public domain.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/mount.h>
+#include <sys/sysctl.h>
+#include <unistd.h>
+#include <sys/file.h>
+#include <sys/wait.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <paths.h>
+
+/* XXX hide some compatibility problems. */
+#undef getvfsbyname
+#define vfsconf		ovfsconf
+
+static struct vfsconf *_vfslist = 0;
+static struct vfsconf _vfsconf;
+static size_t _vfslistlen = 0;
+static int _vfs_keeplist = 0;
+static int _vfs_index = 0;
+
+static int
+initvfs(void)
+{
+	int mib[2] = { CTL_VFS, VFS_VFSCONF };
+	size_t size = 0;
+	int rv;
+
+	rv = sysctl(mib, 2, (void *)0, &size, (void *)0, (size_t)0);
+	if(rv < 0)
+		return 0;
+
+	if(_vfslist)
+		free(_vfslist);
+	_vfslist = malloc(size);
+	if(!_vfslist)
+		return 0;
+
+	rv = sysctl(mib, 2, _vfslist, &size, (void *)0, (size_t)0);
+	if(rv < 0) {
+		free(_vfslist);
+		_vfslist = 0;
+		return 0;
+	}
+
+	_vfslistlen = size / sizeof _vfslist[0];
+	return 1;
+}
+
+struct vfsconf *
+getvfsent(void)
+{
+	if(!_vfslist && !initvfs()) {
+		return 0;
+	}
+
+	do {
+		if(_vfs_index >= _vfslistlen) {
+			return 0;
+		}
+
+		_vfsconf = _vfslist[_vfs_index++];
+	} while(!_vfsconf.vfc_vfsops);
+
+	if(!_vfs_keeplist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+	return &_vfsconf;
+}
+
+struct vfsconf *
+getvfsbyname(const char *name)
+{
+	int i;
+
+	if(!_vfslist && !initvfs()) {
+		return 0;
+	}
+
+	for(i = 0; i < _vfslistlen; i++) {
+		if( ! strcmp(_vfslist[i].vfc_name, name) )
+			break;
+	}
+
+	if(i < _vfslistlen) {
+		_vfsconf = _vfslist[i];
+	}
+
+	if(!_vfs_keeplist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	if(i < _vfslistlen) {
+		return &_vfsconf;
+	} else {
+		return 0;
+	}
+}
+
+struct vfsconf *
+getvfsbytype(int type)
+{
+	int i;
+
+	if(!_vfslist && !initvfs()) {
+		return 0;
+	}
+
+	for(i = 0; i < _vfslistlen; i++) {
+		if(_vfslist[i].vfc_index == type)
+			break;
+	}
+
+	if(i < _vfslistlen) {
+		_vfsconf = _vfslist[i];
+	}
+
+	if(!_vfs_keeplist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	if(i < _vfslistlen) {
+		return &_vfsconf;
+	} else {
+		return 0;
+	}
+}
+
+void
+setvfsent(int keep)
+{
+	if(_vfslist && !keep) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	_vfs_keeplist = keep;
+	_vfs_index = 0;
+}
+
+void
+endvfsent(void)
+{
+	if(_vfslist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	_vfs_index = 0;
+}
+
+int
+vfsisloadable(const char *name)
+{
+	return 1;
+}
+
+int
+vfsload(const char *name)
+{
+	int status;
+
+	status = kldload(name);
+	return status == -1 ? status : 0;
+}
+