Update to latest FreeBSD upstream.
Snapshot as of 9131ba637f003fb5894e3f6343a27d6322205f18 with minimal
modifications to keep it compiling on Android. (For example, using
ifdef __ANDROID__ to guard BSD-specific code.)
Bug: 29899852
Test: manual
Change-Id: I2b8f498332f83fbc486d20540d00a06117907bf8
diff --git a/fsutil.c b/fsutil.c
new file mode 100644
index 0000000..0fb0613
--- /dev/null
+++ b/fsutil.c
@@ -0,0 +1,234 @@
+/* $NetBSD: fsutil.c,v 1.15 2006/06/05 16:52:05 christos Exp $ */
+
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1990, 1993
+ * 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.
+ * 3. 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: fsutil.c,v 1.15 2006/06/05 16:52:05 christos Exp $");
+#endif /* not lint */
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/mount.h>
+
+#include <err.h>
+#include <errno.h>
+#ifndef __ANDROID__
+#include <fstab.h>
+#endif
+#include <paths.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "fsutil.h"
+
+static const char *dev = NULL;
+static int preen = 0;
+
+static void vmsg(int, const char *, va_list) __printflike(2, 0);
+
+void
+setcdevname(const char *cd, int pr)
+{
+ dev = cd;
+ preen = pr;
+}
+
+const char *
+cdevname(void)
+{
+ return dev;
+}
+
+static void
+vmsg(int fatal, const char *fmt, va_list ap)
+{
+ if (!fatal && preen)
+ (void) printf("%s: ", dev);
+
+ (void) vprintf(fmt, ap);
+
+ if (fatal && preen)
+ (void) printf("\n");
+
+ if (fatal && preen) {
+ (void) printf(
+ "%s: UNEXPECTED INCONSISTENCY; RUN %s MANUALLY.\n",
+ dev, getprogname());
+ exit(8);
+ }
+}
+
+/*VARARGS*/
+void
+pfatal(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vmsg(1, fmt, ap);
+ va_end(ap);
+}
+
+/*VARARGS*/
+void
+pwarn(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vmsg(0, fmt, ap);
+ va_end(ap);
+}
+
+void
+perr(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vmsg(1, fmt, ap);
+ va_end(ap);
+}
+
+void
+panic(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vmsg(1, fmt, ap);
+ va_end(ap);
+ exit(8);
+}
+
+const char *
+devcheck(const char *origname)
+{
+ struct stat stslash, stchar;
+
+ if (stat("/", &stslash) < 0) {
+ perr("Can't stat `/'");
+ return (origname);
+ }
+ if (stat(origname, &stchar) < 0) {
+ perr("Can't stat %s\n", origname);
+ return (origname);
+ }
+ if (!S_ISCHR(stchar.st_mode)) {
+ perr("%s is not a char device\n", origname);
+ }
+ return (origname);
+}
+
+#ifndef __ANDROID__
+/*
+ * Get the mount point information for name.
+ */
+struct statfs *
+getmntpt(const char *name)
+{
+ struct stat devstat, mntdevstat;
+ char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
+ char *dev_name;
+ struct statfs *mntbuf, *statfsp;
+ int i, mntsize, isdev;
+
+ if (stat(name, &devstat) != 0)
+ return (NULL);
+ if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
+ isdev = 1;
+ else
+ isdev = 0;
+ mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
+ for (i = 0; i < mntsize; i++) {
+ statfsp = &mntbuf[i];
+ dev_name = statfsp->f_mntfromname;
+ if (*dev_name != '/') {
+ if (strlen(_PATH_DEV) + strlen(dev_name) + 1 >
+ sizeof(statfsp->f_mntfromname))
+ continue;
+ strcpy(device, _PATH_DEV);
+ strcat(device, dev_name);
+ strcpy(statfsp->f_mntfromname, device);
+ }
+ if (isdev == 0) {
+ if (strcmp(name, statfsp->f_mntonname))
+ continue;
+ return (statfsp);
+ }
+ if (stat(dev_name, &mntdevstat) == 0 &&
+ mntdevstat.st_rdev == devstat.st_rdev)
+ return (statfsp);
+ }
+ statfsp = NULL;
+ return (statfsp);
+}
+#endif
+
+void *
+emalloc(size_t s)
+{
+ void *p;
+
+ p = malloc(s);
+ if (p == NULL)
+ err(1, "malloc failed");
+ return (p);
+}
+
+
+void *
+erealloc(void *p, size_t s)
+{
+ void *q;
+
+ q = realloc(p, s);
+ if (q == NULL)
+ err(1, "realloc failed");
+ return (q);
+}
+
+
+char *
+estrdup(const char *s)
+{
+ char *p;
+
+ p = strdup(s);
+ if (p == NULL)
+ err(1, "strdup failed");
+ return (p);
+}
