620 lines
16 KiB
C
620 lines
16 KiB
C
/*****************************************************************************
|
|
*
|
|
* $Id$
|
|
* Purpose ...............: Give status of all filesystems
|
|
*
|
|
*****************************************************************************
|
|
* Copyright (C) 1997-2006
|
|
*
|
|
* Michiel Broek FIDO: 2:280/2802
|
|
* Beekmansbos 10
|
|
* 1971 BV IJmuiden
|
|
* the Netherlands
|
|
*
|
|
* This file is part of MBSE BBS.
|
|
*
|
|
* This BBS is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* MB BBS is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with MB BBS; see the file COPYING. If not, write to the Free
|
|
* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*****************************************************************************/
|
|
|
|
#include "../config.h"
|
|
#include "../lib/mbselib.h"
|
|
#include "taskdisk.h"
|
|
#include "taskutil.h"
|
|
|
|
|
|
typedef struct _mfs_list {
|
|
struct _mfs_list *next; /* Linked list */
|
|
char *mountpoint; /* Mountpoint */
|
|
char *fstype; /* FS type */
|
|
unsigned int size; /* Size in MB */
|
|
unsigned int avail; /* Available in MB */
|
|
unsigned ro : 1; /* Read-Only fs. */
|
|
} mfs_list;
|
|
|
|
mfs_list *mfs = NULL; /* List of filesystems */
|
|
int disk_reread = TRUE; /* Reread tables */
|
|
int recursecount = 0; /* Recurse counter */
|
|
|
|
|
|
|
|
/*
|
|
* Internal prototypes
|
|
*/
|
|
char *mbt_realpath(const char *, char *);
|
|
void tidy_mfslist(mfs_list **);
|
|
int in_mfslist(char *, mfs_list **);
|
|
void fill_mfslist(mfs_list **, char *, char *);
|
|
void update_diskstat(void);
|
|
void add_path(char *);
|
|
|
|
|
|
/*
|
|
* realpath.c -- canonicalize pathname by removing symlinks
|
|
* Copyright (C) 1993 Rick Sladkey <jrs@world.std.com>
|
|
*/
|
|
|
|
#define HAVE_GETCWD
|
|
|
|
/*
|
|
* This routine is part of libc. We include it nevertheless,
|
|
* since the libc version has some security flaws.
|
|
*/
|
|
#define MAX_READLINKS 32
|
|
|
|
char *mbt_realpath(const char *path, char *resolved_path)
|
|
{
|
|
char copy_path[PATH_MAX], link_path[PATH_MAX], *new_path = resolved_path, *max_path;
|
|
int readlinks = 0, n;
|
|
|
|
/* Make a copy of the source path since we may need to modify it. */
|
|
if (strlen(path) >= PATH_MAX) {
|
|
errno = ENAMETOOLONG;
|
|
return NULL;
|
|
}
|
|
strcpy(copy_path, path);
|
|
path = copy_path;
|
|
max_path = copy_path + PATH_MAX - 2;
|
|
|
|
/* If it's a relative pathname use getwd for starters. */
|
|
if (*path != '/') {
|
|
getcwd(new_path, PATH_MAX - 1);
|
|
new_path += strlen(new_path);
|
|
if (new_path[-1] != '/')
|
|
*new_path++ = '/';
|
|
} else {
|
|
*new_path++ = '/';
|
|
path++;
|
|
}
|
|
/* Expand each slash-separated pathname component. */
|
|
while (*path != '\0') {
|
|
/* Ignore stray "/". */
|
|
if (*path == '/') {
|
|
path++;
|
|
continue;
|
|
}
|
|
if (*path == '.') {
|
|
/* Ignore ".". */
|
|
if (path[1] == '\0' || path[1] == '/') {
|
|
path++;
|
|
continue;
|
|
}
|
|
if (path[1] == '.') {
|
|
if (path[2] == '\0' || path[2] == '/') {
|
|
path += 2;
|
|
/* Ignore ".." at root. */
|
|
if (new_path == resolved_path + 1)
|
|
continue;
|
|
/* Handle ".." by backing up. */
|
|
while ((--new_path)[-1] != '/')
|
|
;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
/* Safely copy the next pathname component. */
|
|
while (*path != '\0' && *path != '/') {
|
|
if (path > max_path) {
|
|
errno = ENAMETOOLONG;
|
|
return NULL;
|
|
}
|
|
*new_path++ = *path++;
|
|
}
|
|
#ifdef S_IFLNK
|
|
/* Protect against infinite loops. */
|
|
if (readlinks++ > MAX_READLINKS) {
|
|
errno = ELOOP;
|
|
return NULL;
|
|
}
|
|
/* See if latest pathname component is a symlink. */
|
|
*new_path = '\0';
|
|
n = readlink(resolved_path, link_path, PATH_MAX - 1);
|
|
if (n < 0) {
|
|
/* EINVAL means the file exists but isn't a symlink. */
|
|
if (errno != EINVAL)
|
|
return NULL;
|
|
} else {
|
|
/* Note: readlink doesn't add the null byte. */
|
|
link_path[n] = '\0';
|
|
if (*link_path == '/')
|
|
/* Start over for an absolute symlink. */
|
|
new_path = resolved_path;
|
|
else
|
|
/* Otherwise back up over this component. */
|
|
while (*(--new_path) != '/')
|
|
;
|
|
/* Safe sex check. */
|
|
if (strlen(path) + n >= PATH_MAX) {
|
|
errno = ENAMETOOLONG;
|
|
return NULL;
|
|
}
|
|
/* Insert symlink contents into path. */
|
|
strcat(link_path, path);
|
|
strcpy(copy_path, link_path);
|
|
path = copy_path;
|
|
}
|
|
#endif /* S_IFLNK */
|
|
*new_path++ = '/';
|
|
}
|
|
/* Delete trailing slash but don't whomp a lone slash. */
|
|
if (new_path != resolved_path + 1 && new_path[-1] == '/')
|
|
new_path--;
|
|
/* Make sure it's null terminated. */
|
|
*new_path = '\0';
|
|
return resolved_path;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Reset mounted filesystems array
|
|
*/
|
|
void tidy_mfslist(mfs_list **fap)
|
|
{
|
|
mfs_list *tmp, *old;
|
|
|
|
for (tmp = *fap; tmp; tmp = old) {
|
|
old = tmp->next;
|
|
free(tmp->mountpoint);
|
|
free(tmp->fstype);
|
|
free(tmp);
|
|
}
|
|
*fap = NULL;
|
|
}
|
|
|
|
|
|
|
|
int in_mfslist(char *mountpoint, mfs_list **fap)
|
|
{
|
|
mfs_list *tmp;
|
|
|
|
for (tmp = *fap; tmp; tmp = tmp->next)
|
|
if (strcmp(tmp->mountpoint, mountpoint) == 0)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
void fill_mfslist(mfs_list **fap, char *mountpoint, char *fstype)
|
|
{
|
|
mfs_list *tmp;
|
|
|
|
if (in_mfslist(mountpoint, fap))
|
|
return;
|
|
|
|
tmp = (mfs_list *)malloc(sizeof(mfs_list));
|
|
tmp->next = *fap;
|
|
tmp->mountpoint = xstrcpy(mountpoint);
|
|
tmp->fstype = xstrcpy(fstype);
|
|
tmp->size = 0L;
|
|
tmp->avail = 0L;
|
|
tmp->ro = TRUE; // Read-only, statfs will set real value.
|
|
*fap = tmp;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* This function signals the diskwatcher to reread the tables.
|
|
*/
|
|
char *disk_reset(void)
|
|
{
|
|
disk_reread = TRUE;
|
|
return (char *)"100:0;";
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Check free diskspace on all by mbse used filesystems.
|
|
* The amount of needed space is given in MBytes.
|
|
*/
|
|
void disk_check_r(char *token, char *buf)
|
|
{
|
|
mfs_list *tmp;
|
|
unsigned int needed, lowest = 0xffffffff;
|
|
|
|
strtok(token, ",");
|
|
needed = atol(strtok(NULL, ";"));
|
|
|
|
if (mfs == NULL) {
|
|
/*
|
|
* Answer Error
|
|
*/
|
|
snprintf(buf, SS_BUFSIZE, "100:1,3");
|
|
return;
|
|
}
|
|
|
|
for (tmp = mfs; tmp; tmp = tmp->next) {
|
|
if (!tmp->ro && (tmp->avail < lowest))
|
|
lowest = tmp->avail;
|
|
}
|
|
|
|
if (lowest < needed) {
|
|
snprintf(buf, SS_BUFSIZE, "100:2,0,%d;", lowest);
|
|
} else {
|
|
snprintf(buf, SS_BUFSIZE, "100:2,1,%d;", lowest);
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* This function returns the information of all mounted filesystems,
|
|
* but no more then 10 filesystems.
|
|
*/
|
|
void disk_getfs_r(char *buf)
|
|
{
|
|
char tt[80], *ans = NULL;
|
|
mfs_list *tmp;
|
|
int i = 0;
|
|
|
|
buf[0] = '\0';
|
|
if (mfs == NULL) {
|
|
snprintf(buf, SS_BUFSIZE, "100:0;");
|
|
return;
|
|
}
|
|
|
|
for (tmp = mfs; tmp; tmp = tmp->next) {
|
|
i++;
|
|
if (ans == NULL)
|
|
ans = xstrcpy((char *)",");
|
|
else
|
|
ans = xstrcat(ans, (char *)",");
|
|
tt[0] = '\0';
|
|
snprintf(tt, 80, "%u %u %s %s %d", tmp->size, tmp->avail, tmp->mountpoint, tmp->fstype, tmp->ro);
|
|
ans = xstrcat(ans, tt);
|
|
if (i == 10) /* No more then 10 filesystems */
|
|
break;
|
|
}
|
|
|
|
if (strlen(ans) > (SS_BUFSIZE - 8))
|
|
snprintf(buf, SS_BUFSIZE, "100:0;");
|
|
else
|
|
snprintf(buf, SS_BUFSIZE, "100:%d%s;", i, ans);
|
|
|
|
if (ans != NULL)
|
|
free(ans);
|
|
ans = NULL;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Update disk useage status.
|
|
*/
|
|
void update_diskstat(void)
|
|
{
|
|
struct statfs sfs;
|
|
unsigned int temp;
|
|
mfs_list *tmp;
|
|
|
|
for (tmp = mfs; tmp; tmp = tmp->next) {
|
|
if (statfs(tmp->mountpoint, &sfs) == 0) {
|
|
temp = (unsigned int)(sfs.f_bsize / 512L);
|
|
tmp->size = (unsigned int)(sfs.f_blocks * temp) / 2048L;
|
|
tmp->avail = (unsigned int)(sfs.f_bavail * temp) / 2048L;
|
|
#if defined(__linux__)
|
|
/*
|
|
* The struct statfs (or statvfs) seems to have no information
|
|
* about read-only filesystems, so we guess it based on fstype.
|
|
* See man 2 statvfs about what approximately is defined.
|
|
*/
|
|
tmp->ro = (strstr(tmp->fstype, "iso") != NULL);
|
|
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
|
|
/*
|
|
* XxxxBSD has the info in the statfs structure.
|
|
*/
|
|
tmp->ro = (sfs.f_flags & MNT_RDONLY);
|
|
#else
|
|
#error "Don't know how to get sfs read-only status"
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Add path to table.
|
|
* Find out if the parameter is a path or a file on a path.
|
|
*/
|
|
void add_path(char *lpath)
|
|
{
|
|
struct stat sb;
|
|
char *p, fsname[PATH_MAX], fstype[PATH_MAX], *rpath;
|
|
#if defined(__linux__)
|
|
char *mtab, *fs;
|
|
FILE *fp;
|
|
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
|
|
struct statfs *mntbuf;
|
|
int mntsize;
|
|
int i;
|
|
#else
|
|
#error "Don't know how to get mount paths"
|
|
#endif
|
|
|
|
if (strlen(lpath) == 0) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Safety recursive call count.
|
|
*/
|
|
recursecount++;
|
|
if (recursecount > 2) {
|
|
Syslog('!', "add_path(%s), too many recursive calls", lpath);
|
|
recursecount--;
|
|
return;
|
|
}
|
|
|
|
rpath = calloc(PATH_MAX, sizeof(char));
|
|
mbt_realpath(lpath, rpath);
|
|
|
|
if (lstat(rpath, &sb) == 0) {
|
|
|
|
if (S_ISDIR(sb.st_mode)) {
|
|
|
|
#if defined(__linux__)
|
|
|
|
if ((fp = fopen((char *)"/etc/mtab", "r"))) {
|
|
mtab = calloc(PATH_MAX, sizeof(char));
|
|
fsname[0] = '\0';
|
|
|
|
while (fgets(mtab, PATH_MAX -1, fp)) {
|
|
fs = strtok(mtab, " \t");
|
|
fs = strtok(NULL, " \t");
|
|
/*
|
|
* Overwrite fsname each time a match is found, the last
|
|
* mounted filesystem that matches must be the one we seek.
|
|
*/
|
|
if (strncmp(fs, rpath, strlen(fs)) == 0) {
|
|
snprintf(fsname, PATH_MAX, "%s", fs);
|
|
fs = strtok(NULL, " \t");
|
|
snprintf(fstype, PATH_MAX, "%s", fs);
|
|
}
|
|
}
|
|
fclose(fp);
|
|
free(mtab);
|
|
fill_mfslist(&mfs, fsname, fstype);
|
|
}
|
|
|
|
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
|
|
|
|
if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT))) {
|
|
|
|
for (i = 0; i < mntsize; i++) {
|
|
if (strncmp(mntbuf[i].f_mntonname, rpath, strlen(mntbuf[i].f_mntonname)) == 0) {
|
|
snprintf(fsname, PATH_MAX, "%s", mntbuf[i].f_mntonname);
|
|
snprintf(fstype, PATH_MAX, "%s", mntbuf[i].f_fstypename);
|
|
}
|
|
}
|
|
fill_mfslist(&mfs, fsname, fstype);
|
|
}
|
|
|
|
#else
|
|
#error "Unknown OS - don't know what to do"
|
|
#endif
|
|
|
|
} else {
|
|
/*
|
|
* Not a directory, maybe a file.
|
|
*/
|
|
if ((p = strrchr(rpath, '/')))
|
|
*p = '\0';
|
|
add_path(rpath);
|
|
}
|
|
} else {
|
|
/*
|
|
* Possible cause, we were given a filename that
|
|
* may not be present because this is a temporary file.
|
|
* Strip the last part of the name and try again.
|
|
*/
|
|
if ((p = strrchr(rpath, '/')))
|
|
*p = '\0';
|
|
add_path(rpath);
|
|
}
|
|
recursecount--;
|
|
free(rpath);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Diskwatch
|
|
*/
|
|
void diskwatch(void)
|
|
{
|
|
FILE *fp;
|
|
char *temp = NULL;
|
|
mfs_list *tmp;
|
|
|
|
if (disk_reread) {
|
|
disk_reread = FALSE;
|
|
Syslog('+', "Reread disk filesystems");
|
|
|
|
tidy_mfslist(&mfs);
|
|
|
|
add_path(getenv("MBSE_ROOT"));
|
|
add_path(CFG.bbs_menus);
|
|
add_path(CFG.bbs_txtfiles);
|
|
add_path(CFG.alists_path);
|
|
add_path(CFG.req_magic);
|
|
add_path(CFG.bbs_usersdir);
|
|
add_path(CFG.nodelists);
|
|
add_path(CFG.inbound);
|
|
add_path(CFG.pinbound);
|
|
add_path(CFG.outbound);
|
|
add_path(CFG.ftp_base);
|
|
add_path(CFG.bbs_macros);
|
|
add_path(CFG.out_queue);
|
|
add_path(CFG.rulesdir);
|
|
add_path(CFG.tmailshort);
|
|
add_path(CFG.tmaillong);
|
|
|
|
temp = calloc(PATH_MAX, sizeof(char ));
|
|
snprintf(temp, PATH_MAX, "%s/etc/fareas.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&areahdr, sizeof(areahdr), 1, fp);
|
|
fseek(fp, areahdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&area, areahdr.recsize, 1, fp)) {
|
|
if (area.Available) {
|
|
add_path(area.Path);
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
snprintf(temp, PATH_MAX, "%s/etc/mareas.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&msgshdr, sizeof(msgshdr), 1, fp);
|
|
fseek(fp, msgshdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&msgs, msgshdr.recsize, 1, fp)) {
|
|
if (msgs.Active)
|
|
add_path(msgs.Base);
|
|
fseek(fp, msgshdr.syssize, SEEK_CUR);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
snprintf(temp, PATH_MAX, "%s/etc/language.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&langhdr, sizeof(langhdr), 1, fp);
|
|
fseek(fp, langhdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&lang, langhdr.recsize, 1, fp)) {
|
|
if (lang.Available) {
|
|
add_path(lang.MenuPath);
|
|
add_path(lang.TextPath);
|
|
add_path(lang.MacroPath);
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
snprintf(temp, PATH_MAX, "%s/etc/nodes.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&nodeshdr, sizeof(nodeshdr), 1, fp);
|
|
fseek(fp, nodeshdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&nodes, nodeshdr.recsize, 1, fp)) {
|
|
if (nodes.Session_in == S_DIR)
|
|
add_path(nodes.Dir_in_path);
|
|
if (nodes.Session_out == S_DIR)
|
|
add_path(nodes.Dir_out_path);
|
|
add_path(nodes.OutBox);
|
|
fseek(fp, nodeshdr.filegrp + nodeshdr.mailgrp, SEEK_CUR);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
snprintf(temp, PATH_MAX, "%s/etc/fgroups.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&fgrouphdr, sizeof(fgrouphdr), 1, fp);
|
|
fseek(fp, fgrouphdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&fgroup, fgrouphdr.recsize, 1, fp)) {
|
|
if (fgroup.Active)
|
|
add_path(fgroup.BasePath);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
snprintf(temp, PATH_MAX, "%s/etc/mgroups.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&mgrouphdr, sizeof(mgrouphdr), 1, fp);
|
|
fseek(fp, mgrouphdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&mgroup, mgrouphdr.recsize, 1, fp)) {
|
|
if (mgroup.Active)
|
|
add_path(mgroup.BasePath);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
snprintf(temp, PATH_MAX, "%s/etc/hatch.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&hatchhdr, sizeof(hatchhdr), 1, fp);
|
|
fseek(fp, hatchhdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&hatch, hatchhdr.recsize, 1, fp)) {
|
|
if (hatch.Active)
|
|
add_path(hatch.Spec);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
snprintf(temp, PATH_MAX, "%s/etc/magic.data", getenv("MBSE_ROOT"));
|
|
if ((fp = fopen(temp, "r"))) {
|
|
fread(&magichdr, sizeof(magichdr), 1, fp);
|
|
fseek(fp, magichdr.hdrsize, SEEK_SET);
|
|
|
|
while (fread(&magic, magichdr.recsize, 1, fp)) {
|
|
if (magic.Active && ((magic.Attrib == MG_COPY) || (magic.Attrib == MG_UNPACK)))
|
|
add_path(magic.Path);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
free(temp);
|
|
temp = NULL;
|
|
|
|
/*
|
|
* Now update the new table with filesystems information.
|
|
*/
|
|
update_diskstat();
|
|
for (tmp = mfs; tmp; tmp = tmp->next) {
|
|
Syslog('+', "Found filesystem: %s type: %s status: %s", tmp->mountpoint, tmp->fstype, tmp->ro ?"RO":"RW");
|
|
}
|
|
} else {
|
|
update_diskstat();
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void deinit_diskwatch()
|
|
{
|
|
Syslog('d', "De-init diskwatch done");
|
|
tidy_mfslist(&mfs);
|
|
}
|
|
|
|
|