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/* ----------------------------------------------------------------------- *
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*
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* mount_ext2.c - module for Linux automountd to mount ext2 filesystems
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* after running fsck on them.
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*
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* Copyright 1998 Transmeta Corporation - All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 675 Mass Ave, Cambridge MA 02139,
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* USA; either version 2 of the License, or (at your option) any later
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* version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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#include <stdio.h>
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#include <malloc.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#define MODULE_MOUNT
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#include "automount.h"
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#define MODPREFIX "mount(ext2): "
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int mount_version = AUTOFS_MOUNT_VERSION; /* Required by protocol */
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int mount_init(void **context)
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{
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return 0;
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}
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int mount_reinit(void **context)
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{
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return 0;
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}
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int mount_mount(struct autofs_point *ap, const char *root, const char *name, int name_len,
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const char *what, const char *fstype, const char *options, void *context)
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{
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char fullpath[PATH_MAX];
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char buf[MAX_ERR_BUF];
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const char *p, *p1;
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int err, ro = 0;
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const char *fsck_prog;
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int len, status, existed = 1;
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void (*mountlog)(unsigned int, const char*, ...) = &log_debug;
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if (ap->flags & MOUNT_FLAG_REMOUNT)
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return 0;
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if (defaults_get_mount_verbose())
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mountlog = &log_info;
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/* Root offset of multi-mount */
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len = strlen(root);
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if (root[len - 1] == '/') {
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len = snprintf(fullpath, len, "%s", root);
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} else if (*name == '/') {
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/*
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* Direct or offset mount, name is absolute path so
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* don't use root (but with move mount changes root
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* is now the same as name).
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*/
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len = sprintf(fullpath, "%s", root);
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} else {
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len = sprintf(fullpath, "%s/%s", root, name);
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}
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fullpath[len] = '\0';
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debug(ap->logopt, MODPREFIX "calling mkdir_path %s", fullpath);
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status = mkdir_path(fullpath, mp_mode);
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if (status && errno != EEXIST) {
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char *estr = strerror_r(errno, buf, MAX_ERR_BUF);
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error(ap->logopt,
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MODPREFIX "mkdir_path %s failed: %s", fullpath, estr);
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return 1;
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}
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if (!status)
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existed = 0;
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if (options && options[0]) {
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for (p = options; (p1 = strchr(p, ',')); p = p1)
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if (!_strncmp("ro", p, p1 - p) && ++p1 - p == sizeof("ro"))
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ro = 1;
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if (!strcmp(p, "ro"))
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ro = 1;
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}
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fsck_prog = PATH_E2FSCK;
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#ifdef HAVE_E3FSCK
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if (!strcmp(fstype,"ext3"))
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fsck_prog = PATH_E3FSCK;
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#endif
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#ifdef HAVE_E4FSCK
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if (!strcmp(fstype,"ext4"))
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fsck_prog = PATH_E4FSCK;
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#endif
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if (ro) {
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debug(ap->logopt,
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MODPREFIX "calling %s -n %s", fsck_prog, what);
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err = spawnl(ap->logopt, fsck_prog, fsck_prog, "-n", what, NULL);
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} else {
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debug(ap->logopt,
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MODPREFIX "calling %s -p %s", fsck_prog, what);
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err = spawnl(ap->logopt, fsck_prog, fsck_prog, "-p", what, NULL);
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}
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/*
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* spawnl returns the error code, left shifted by 8 bits. We are
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* interested in the following error bits from the fsck program:
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* 2 - File system errors corrected, system should be rebooted
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* 4 - File system errors left uncorrected
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*/
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if ((err >> 8) & 6) {
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error(ap->logopt,
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MODPREFIX "%s: filesystem needs repair, won't mount",
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what);
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return 1;
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}
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if (options) {
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mountlog(ap->logopt, MODPREFIX
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"calling mount -t %s -o %s %s %s",
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fstype, options, what, fullpath);
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err = spawn_mount(ap->logopt, "-t", fstype,
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"-o", options, what, fullpath, NULL);
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} else {
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mountlog(ap->logopt,
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MODPREFIX "calling mount -t %s %s %s",
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fstype, what, fullpath);
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err = spawn_mount(ap->logopt, "-t", fstype, what, fullpath, NULL);
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}
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if (err) {
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info(ap->logopt, MODPREFIX "failed to mount %s (type %s) on %s",
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what, fstype, fullpath);
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if (ap->type != LKP_INDIRECT)
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return 1;
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if ((!(ap->flags & MOUNT_FLAG_GHOST) && name_len) || !existed)
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rmdir_path(ap, fullpath, ap->dev);
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return 1;
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} else {
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debug(ap->logopt,
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MODPREFIX "mounted %s type %s on %s",
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what, fstype, fullpath);
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return 0;
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}
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}
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int mount_done(void *context)
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{
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return 0;
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}
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