entered into RCS

1 files changed, 355 insertions, 0 deletions

diff --git a/bsdfsck/preen.c b/bsdfsck/preen.c
new file mode 100644
index 00000000..7893a5e1
--- /dev/null
+++ b/bsdfsck/preen.c
@@ -0,0 +1,355 @@
+/*
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 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.
+ */
+
+#ifndef lint
+/*static char sccsid[] = "from: @(#)preen.c	8.1 (Berkeley) 6/5/93";*/
+static char *rcsid = "$Id: preen.c,v 1.1 1994/08/23 19:29:25 mib Exp $";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <fstab.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+char	*rawname(), *unrawname(), *blockcheck();
+
+struct part {
+	struct	part *next;		/* forward link of partitions on disk */
+	char	*name;			/* device name */
+	char	*fsname;		/* mounted filesystem name */
+	long	auxdata;		/* auxillary data for application */
+} *badlist, **badnext = &badlist;
+
+struct disk {
+	char	*name;			/* disk base name */
+	struct	disk *next;		/* forward link for list of disks */
+	struct	part *part;		/* head of list of partitions on disk */
+	int	pid;			/* If != 0, pid of proc working on */
+} *disks;
+
+int	nrun, ndisks;
+char	hotroot;
+
+checkfstab(preen, maxrun, docheck, chkit)
+	int preen, maxrun;
+	int (*docheck)(), (*chkit)();
+{
+	register struct fstab *fsp;
+	register struct disk *dk, *nextdisk;
+	register struct part *pt;
+	int ret, pid, retcode, passno, sumstatus, status;
+	long auxdata;
+	char *name;
+
+	sumstatus = 0;
+	for (passno = 1; passno <= 2; passno++) {
+		if (setfsent() == 0) {
+			fprintf(stderr, "Can't open checklist file: %s\n",
+			    _PATH_FSTAB);
+			return (8);
+		}
+		while ((fsp = getfsent()) != 0) {
+			if ((auxdata = (*docheck)(fsp)) == 0)
+				continue;
+			if (preen == 0 || passno == 1 && fsp->fs_passno == 1) {
+				if (name = blockcheck(fsp->fs_spec)) {
+					if (sumstatus = (*chkit)(name,
+					    fsp->fs_file, auxdata, 0))
+						return (sumstatus);
+				} else if (preen)
+					return (8);
+			} else if (passno == 2 && fsp->fs_passno > 1) {
+				if ((name = blockcheck(fsp->fs_spec)) == NULL) {
+					fprintf(stderr, "BAD DISK NAME %s\n",
+						fsp->fs_spec);
+					sumstatus |= 8;
+					continue;
+				}
+				addpart(name, fsp->fs_file, auxdata);
+			}
+		}
+		if (preen == 0)
+			return (0);
+	}
+	if (preen) {
+		if (maxrun == 0)
+			maxrun = ndisks;
+		if (maxrun > ndisks)
+			maxrun = ndisks;
+		nextdisk = disks;
+		for (passno = 0; passno < maxrun; ++passno) {
+			while (ret = startdisk(nextdisk, chkit) && nrun > 0)
+				sleep(10);
+			if (ret)
+				return (ret);
+			nextdisk = nextdisk->next;
+		}
+		while ((pid = wait(&status)) != -1) {
+			for (dk = disks; dk; dk = dk->next)
+				if (dk->pid == pid)
+					break;
+			if (dk == 0) {
+				printf("Unknown pid %d\n", pid);
+				continue;
+			}
+			if (WIFEXITED(status))
+				retcode = WEXITSTATUS(status);
+			else
+				retcode = 0;
+			if (WIFSIGNALED(status)) {
+				printf("%s (%s): EXITED WITH SIGNAL %d\n",
+					dk->part->name, dk->part->fsname,
+					WTERMSIG(status));
+				retcode = 8;
+			}
+			if (retcode != 0) {
+				sumstatus |= retcode;
+				*badnext = dk->part;
+				badnext = &dk->part->next;
+				dk->part = dk->part->next;
+				*badnext = NULL;
+			} else
+				dk->part = dk->part->next;
+			dk->pid = 0;
+			nrun--;
+			if (dk->part == NULL)
+				ndisks--;
+
+			if (nextdisk == NULL) {
+				if (dk->part) {
+					while (ret = startdisk(dk, chkit) &&
+					    nrun > 0)
+						sleep(10);
+					if (ret)
+						return (ret);
+				}
+			} else if (nrun < maxrun && nrun < ndisks) {
+				for ( ;; ) {
+					if ((nextdisk = nextdisk->next) == NULL)
+						nextdisk = disks;
+					if (nextdisk->part != NULL &&
+					    nextdisk->pid == 0)
+						break;
+				}
+				while (ret = startdisk(nextdisk, chkit) &&
+				    nrun > 0)
+					sleep(10);
+				if (ret)
+					return (ret);
+			}
+		}
+	}
+	if (sumstatus) {
+		if (badlist == 0)
+			return (sumstatus);
+		fprintf(stderr, "THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t",
+			badlist->next ? "S" : "", "UNEXPECTED INCONSISTENCY:");
+		for (pt = badlist; pt; pt = pt->next)
+			fprintf(stderr, "%s (%s)%s", pt->name, pt->fsname,
+			    pt->next ? ", " : "\n");
+		return (sumstatus);
+	}
+	(void)endfsent();
+	return (0);
+}
+
+struct disk *
+finddisk(name)
+	char *name;
+{
+	register struct disk *dk, **dkp;
+	register char *p;
+	size_t len;
+
+	for (p = name + strlen(name) - 1; p >= name; --p)
+		if (isdigit(*p)) {
+			len = p - name + 1;
+			break;
+		}
+	if (p < name)
+		len = strlen(name);
+
+	for (dk = disks, dkp = &disks; dk; dkp = &dk->next, dk = dk->next) {
+		if (strncmp(dk->name, name, len) == 0 &&
+		    dk->name[len] == 0)
+			return (dk);
+	}
+	if ((*dkp = (struct disk *)malloc(sizeof(struct disk))) == NULL) {
+		fprintf(stderr, "out of memory");
+		exit (8);
+	}
+	dk = *dkp;
+	if ((dk->name = malloc(len + 1)) == NULL) {
+		fprintf(stderr, "out of memory");
+		exit (8);
+	}
+	(void)strncpy(dk->name, name, len);
+	dk->name[len] = '\0';
+	dk->part = NULL;
+	dk->next = NULL;
+	dk->pid = 0;
+	ndisks++;
+	return (dk);
+}
+
+addpart(name, fsname, auxdata)
+	char *name, *fsname;
+	long auxdata;
+{
+	struct disk *dk = finddisk(name);
+	register struct part *pt, **ppt = &dk->part;
+
+	for (pt = dk->part; pt; ppt = &pt->next, pt = pt->next)
+		if (strcmp(pt->name, name) == 0) {
+			printf("%s in fstab more than once!\n", name);
+			return;
+		}
+	if ((*ppt = (struct part *)malloc(sizeof(struct part))) == NULL) {
+		fprintf(stderr, "out of memory");
+		exit (8);
+	}
+	pt = *ppt;
+	if ((pt->name = malloc(strlen(name) + 1)) == NULL) {
+		fprintf(stderr, "out of memory");
+		exit (8);
+	}
+	(void)strcpy(pt->name, name);
+	if ((pt->fsname = malloc(strlen(fsname) + 1)) == NULL) {
+		fprintf(stderr, "out of memory");
+		exit (8);
+	}
+	(void)strcpy(pt->fsname, fsname);
+	pt->next = NULL;
+	pt->auxdata = auxdata;
+}
+
+startdisk(dk, checkit)
+	register struct disk *dk;
+	int (*checkit)();
+{
+	register struct part *pt = dk->part;
+
+	dk->pid = fork();
+	if (dk->pid < 0) {
+		perror("fork");
+		return (8);
+	}
+	if (dk->pid == 0)
+		exit((*checkit)(pt->name, pt->fsname, pt->auxdata, 1));
+	nrun++;
+	return (0);
+}
+
+char *
+blockcheck(name)
+	char *name;
+{
+	struct stat stslash, stblock, stchar;
+	char *raw;
+	int retried = 0;
+
+	hotroot = 0;
+	if (stat("/", &stslash) < 0) {
+		perror("/");
+		printf("Can't stat root\n");
+		return (0);
+	}
+retry:
+	if (stat(name, &stblock) < 0) {
+		perror(name);
+		printf("Can't stat %s\n", name);
+		return (0);
+	}
+	if ((stblock.st_mode & S_IFMT) == S_IFBLK) {
+		if (stslash.st_dev == stblock.st_rdev)
+			hotroot++;
+		raw = rawname(name);
+		if (stat(raw, &stchar) < 0) {
+			perror(raw);
+			printf("Can't stat %s\n", raw);
+			return (name);
+		}
+		if ((stchar.st_mode & S_IFMT) == S_IFCHR) {
+			return (raw);
+		} else {
+			printf("%s is not a character device\n", raw);
+			return (name);
+		}
+	} else if ((stblock.st_mode & S_IFMT) == S_IFCHR && !retried) {
+		name = unrawname(name);
+		retried++;
+		goto retry;
+	}
+	printf("Can't make sense out of name %s\n", name);
+	return (0);
+}
+
+char *
+unrawname(name)
+	char *name;
+{
+	char *dp;
+	struct stat stb;
+
+	if ((dp = rindex(name, '/')) == 0)
+		return (name);
+	if (stat(name, &stb) < 0)
+		return (name);
+	if ((stb.st_mode & S_IFMT) != S_IFCHR)
+		return (name);
+	if (dp[1] != 'r')
+		return (name);
+	(void)strcpy(&dp[1], &dp[2]);
+	return (name);
+}
+
+char *
+rawname(name)
+	char *name;
+{
+	static char rawbuf[32];
+	char *dp;
+
+	if ((dp = rindex(name, '/')) == 0)
+		return (0);
+	*dp = 0;
+	(void)strcpy(rawbuf, name);
+	*dp = '/';
+	(void)strcat(rawbuf, "/r");
+	(void)strcat(rawbuf, &dp[1]);
+	return (rawbuf);
+}