freebsd-dev/usr.sbin/quot/quot.c
David Malone bee3d34f79 The quot command expected all inodes contents to be valid, however
on UFS2 inodes are initialised as they are needed, rather than at
newfs time. When quot encountered these inodes it could produce
crazy results.

Now, on UFS2 filesystems, quot's get_inode function will bzero
unallicated inodes before passing them back to a caller. This is
how UFS2 initialises new inodes, so this should work OK.

Also, while I'm here, make quot exit with an error if it finds
inodes of an unknown type. This should help catch future problems
of this type.

Reviewed by:	iedowse
MFC after:	1 week
2006-02-25 23:50:15 +00:00

677 lines
15 KiB
C

/*
* Copyright (C) 1991, 1994 Wolfgang Solfrank.
* Copyright (C) 1991, 1994 TooLs GmbH.
* 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 TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/stdint.h>
#include <sys/mount.h>
#include <sys/disklabel.h>
#include <sys/time.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <err.h>
#include <fcntl.h>
#include <fstab.h>
#include <errno.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
/* some flags of what to do: */
static char estimate;
static char count;
static char unused;
static void (*func)(int, struct fs *, char *);
static long blocksize;
static char *header;
static int headerlen;
static union dinode *get_inode(int, struct fs *, ino_t);
static int virtualblocks(struct fs *, union dinode *);
static int isfree(struct fs *, union dinode *);
static void inituser(void);
static void usrrehash(void);
static struct user *user(uid_t);
static int cmpusers(const void *, const void *);
static void uses(uid_t, daddr_t, time_t);
static void initfsizes(void);
static void dofsizes(int, struct fs *, char *);
static void douser(int, struct fs *, char *);
static void donames(int, struct fs *, char *);
static void usage(void);
static void quot(char *, char *);
/*
* Original BSD quot doesn't round to number of frags/blocks,
* doesn't account for indirection blocks and gets it totally
* wrong if the size is a multiple of the blocksize.
* The new code always counts the number of 512 byte blocks
* instead of the number of kilobytes and converts them to
* kByte when done (on request).
*
* Due to the size of modern disks, we must cast intermediate
* values to 64 bits to prevent potential overflows.
*/
#ifdef COMPAT
#define SIZE(n) (n)
#else
#define SIZE(n) ((int)(((quad_t)(n) * 512 + blocksize - 1)/blocksize))
#endif
#define INOCNT(fs) ((fs)->fs_ipg)
#define INOSZ(fs) \
(((fs)->fs_magic == FS_UFS1_MAGIC ? sizeof(struct ufs1_dinode) : \
sizeof(struct ufs2_dinode)) * INOCNT(fs))
union dinode {
struct ufs1_dinode dp1;
struct ufs2_dinode dp2;
};
#define DIP(fs, dp, field) \
(((fs)->fs_magic == FS_UFS1_MAGIC) ? \
(dp)->dp1.field : (dp)->dp2.field)
static union dinode *
get_inode(fd,super,ino)
int fd;
struct fs *super;
ino_t ino;
{
static caddr_t ipbuf;
static struct cg *cgp;
static ino_t last;
static int cg;
struct ufs2_dinode *di2;
if (fd < 0) { /* flush cache */
if (ipbuf) {
free(ipbuf);
ipbuf = 0;
if (super->fs_magic == FS_UFS2_MAGIC) {
free(cgp);
cgp = 0;
}
}
return 0;
}
if (!ipbuf || ino < last || ino >= last + INOCNT(super)) {
if (super->fs_magic == FS_UFS2_MAGIC &&
(!cgp || cg != ino_to_cg(super, ino))) {
cg = ino_to_cg(super, ino);
if (!cgp && !(cgp = malloc(super->fs_cgsize)))
errx(1, "allocate cg");
if (lseek(fd, (off_t)cgtod(super, cg) << super->fs_fshift, 0) < 0)
err(1, "lseek cg");
if (read(fd, cgp, super->fs_cgsize) != super->fs_cgsize)
err(1, "read cg");
if (!cg_chkmagic(cgp))
errx(1, "cg has bad magic");
}
if (!ipbuf
&& !(ipbuf = malloc(INOSZ(super))))
errx(1, "allocate inodes");
last = (ino / INOCNT(super)) * INOCNT(super);
if (lseek(fd, (off_t)ino_to_fsba(super, last) << super->fs_fshift, 0) < (off_t)0
|| read(fd, ipbuf, INOSZ(super)) != (ssize_t)INOSZ(super))
err(1, "read inodes");
}
if (super->fs_magic == FS_UFS1_MAGIC)
return ((union dinode *)
&((struct ufs1_dinode *)ipbuf)[ino % INOCNT(super)]);
di2 = &((struct ufs2_dinode *)ipbuf)[ino % INOCNT(super)];
/* If the inode is unused, it might be unallocated too, so zero it. */
if (isclr(cg_inosused(cgp), ino % super->fs_ipg))
bzero(di2, sizeof (*di2));
return ((union dinode *)di2);
}
#ifdef COMPAT
#define actualblocks(fs, dp) (DIP(fs, dp, di_blocks) / 2)
#else
#define actualblocks(fs, dp) DIP(fs, dp, di_blocks)
#endif
static int virtualblocks(super, dp)
struct fs *super;
union dinode *dp;
{
register off_t nblk, sz;
sz = DIP(super, dp, di_size);
#ifdef COMPAT
if (lblkno(super,sz) >= NDADDR) {
nblk = blkroundup(super,sz);
if (sz == nblk)
nblk += super->fs_bsize;
}
return sz / 1024;
#else /* COMPAT */
if (lblkno(super,sz) >= NDADDR) {
nblk = blkroundup(super,sz);
sz = lblkno(super,nblk);
sz = (sz - NDADDR + NINDIR(super) - 1) / NINDIR(super);
while (sz > 0) {
nblk += sz * super->fs_bsize;
/* sz - 1 rounded up */
sz = (sz - 1 + NINDIR(super) - 1) / NINDIR(super);
}
} else
nblk = fragroundup(super,sz);
return nblk / 512;
#endif /* COMPAT */
}
static int
isfree(super, dp)
struct fs *super;
union dinode *dp;
{
#ifdef COMPAT
return (DIP(super, dp, di_mode) & IFMT) == 0;
#else /* COMPAT */
switch (DIP(super, dp, di_mode) & IFMT) {
case IFIFO:
case IFLNK: /* should check FASTSYMLINK? */
case IFDIR:
case IFREG:
return 0;
case IFCHR:
case IFBLK:
case IFSOCK:
case IFWHT:
case 0:
return 1;
default:
errx(1, "unknown IFMT 0%o", DIP(super, dp, di_mode) & IFMT);
}
#endif
}
static struct user {
uid_t uid;
char *name;
daddr_t space;
long count;
daddr_t spc30;
daddr_t spc60;
daddr_t spc90;
} *users;
static int nusers;
static void
inituser()
{
register int i;
register struct user *usr;
if (!nusers) {
nusers = 8;
if (!(users =
(struct user *)calloc(nusers,sizeof(struct user))))
errx(1, "allocate users");
} else {
for (usr = users, i = nusers; --i >= 0; usr++) {
usr->space = usr->spc30 = usr->spc60 = usr->spc90 = 0;
usr->count = 0;
}
}
}
static void
usrrehash()
{
register int i;
register struct user *usr, *usrn;
struct user *svusr;
svusr = users;
nusers <<= 1;
if (!(users = (struct user *)calloc(nusers,sizeof(struct user))))
errx(1, "allocate users");
for (usr = svusr, i = nusers >> 1; --i >= 0; usr++) {
for (usrn = users + (usr->uid&(nusers - 1)); usrn->name;
usrn--) {
if (usrn <= users)
usrn = users + nusers;
}
*usrn = *usr;
}
}
static struct user *
user(uid)
uid_t uid;
{
register struct user *usr;
register int i;
struct passwd *pwd;
while (1) {
for (usr = users + (uid&(nusers - 1)), i = nusers; --i >= 0;
usr--) {
if (!usr->name) {
usr->uid = uid;
if (!(pwd = getpwuid(uid))) {
if ((usr->name = (char *)malloc(7)))
sprintf(usr->name,"#%d",uid);
} else {
if ((usr->name = (char *)
malloc(strlen(pwd->pw_name) + 1)))
strcpy(usr->name,pwd->pw_name);
}
if (!usr->name)
errx(1, "allocate users");
return usr;
} else if (usr->uid == uid)
return usr;
if (usr <= users)
usr = users + nusers;
}
usrrehash();
}
}
static int
cmpusers(v1,v2)
const void *v1, *v2;
{
const struct user *u1, *u2;
u1 = (const struct user *)v1;
u2 = (const struct user *)v2;
return u2->space - u1->space;
}
#define sortusers(users) (qsort((users),nusers,sizeof(struct user), \
cmpusers))
static void
uses(uid,blks,act)
uid_t uid;
daddr_t blks;
time_t act;
{
static time_t today;
register struct user *usr;
if (!today)
time(&today);
usr = user(uid);
usr->count++;
usr->space += blks;
if (today - act > 90L * 24L * 60L * 60L)
usr->spc90 += blks;
if (today - act > 60L * 24L * 60L * 60L)
usr->spc60 += blks;
if (today - act > 30L * 24L * 60L * 60L)
usr->spc30 += blks;
}
#ifdef COMPAT
#define FSZCNT 500
#else
#define FSZCNT 512
#endif
struct fsizes {
struct fsizes *fsz_next;
daddr_t fsz_first, fsz_last;
ino_t fsz_count[FSZCNT];
daddr_t fsz_sz[FSZCNT];
} *fsizes;
static void
initfsizes()
{
register struct fsizes *fp;
register int i;
for (fp = fsizes; fp; fp = fp->fsz_next) {
for (i = FSZCNT; --i >= 0;) {
fp->fsz_count[i] = 0;
fp->fsz_sz[i] = 0;
}
}
}
static void
dofsizes(fd, super, name)
int fd;
struct fs *super;
char *name;
{
ino_t inode, maxino;
union dinode *dp;
daddr_t sz, ksz;
struct fsizes *fp, **fsp;
register int i;
maxino = super->fs_ncg * super->fs_ipg - 1;
#ifdef COMPAT
if (!(fsizes = (struct fsizes *)malloc(sizeof(struct fsizes))))
errx(1, "allocate fsize structure");
#endif /* COMPAT */
for (inode = 0; inode < maxino; inode++) {
errno = 0;
if ((dp = get_inode(fd,super,inode))
#ifdef COMPAT
&& ((DIP(super, dp, di_mode) & IFMT) == IFREG
|| (DIP(super, dp, di_mode) & IFMT) == IFDIR)
#else /* COMPAT */
&& !isfree(super, dp)
#endif /* COMPAT */
) {
sz = estimate ? virtualblocks(super, dp) :
actualblocks(super, dp);
#ifdef COMPAT
if (sz >= FSZCNT) {
fsizes->fsz_count[FSZCNT-1]++;
fsizes->fsz_sz[FSZCNT-1] += sz;
} else {
fsizes->fsz_count[sz]++;
fsizes->fsz_sz[sz] += sz;
}
#else /* COMPAT */
ksz = SIZE(sz);
for (fsp = &fsizes; (fp = *fsp); fsp = &fp->fsz_next) {
if (ksz < fp->fsz_last)
break;
}
if (!fp || ksz < fp->fsz_first) {
if (!(fp = (struct fsizes *)
malloc(sizeof(struct fsizes))))
errx(1, "allocate fsize structure");
fp->fsz_next = *fsp;
*fsp = fp;
fp->fsz_first = (ksz / FSZCNT) * FSZCNT;
fp->fsz_last = fp->fsz_first + FSZCNT;
for (i = FSZCNT; --i >= 0;) {
fp->fsz_count[i] = 0;
fp->fsz_sz[i] = 0;
}
}
fp->fsz_count[ksz % FSZCNT]++;
fp->fsz_sz[ksz % FSZCNT] += sz;
#endif /* COMPAT */
} else if (errno) {
err(1, "%s", name);
}
}
sz = 0;
for (fp = fsizes; fp; fp = fp->fsz_next) {
for (i = 0; i < FSZCNT; i++) {
if (fp->fsz_count[i])
printf("%jd\t%jd\t%d\n",
(intmax_t)(fp->fsz_first + i),
(intmax_t)fp->fsz_count[i],
SIZE(sz += fp->fsz_sz[i]));
}
}
}
static void
douser(fd, super, name)
int fd;
struct fs *super;
char *name;
{
ino_t inode, maxino;
struct user *usr, *usrs;
union dinode *dp;
register int n;
maxino = super->fs_ncg * super->fs_ipg - 1;
for (inode = 0; inode < maxino; inode++) {
errno = 0;
if ((dp = get_inode(fd,super,inode))
&& !isfree(super, dp))
uses(DIP(super, dp, di_uid),
estimate ? virtualblocks(super, dp) :
actualblocks(super, dp),
DIP(super, dp, di_atime));
else if (errno) {
err(1, "%s", name);
}
}
if (!(usrs = (struct user *)malloc(nusers * sizeof(struct user))))
errx(1, "allocate users");
bcopy(users,usrs,nusers * sizeof(struct user));
sortusers(usrs);
for (usr = usrs, n = nusers; --n >= 0 && usr->count; usr++) {
printf("%5d",SIZE(usr->space));
if (count)
printf("\t%5ld",usr->count);
printf("\t%-8s",usr->name);
if (unused)
printf("\t%5d\t%5d\t%5d",
SIZE(usr->spc30),
SIZE(usr->spc60),
SIZE(usr->spc90));
printf("\n");
}
free(usrs);
}
static void
donames(fd, super, name)
int fd;
struct fs *super;
char *name;
{
int c;
ino_t inode;
ino_t maxino;
union dinode *dp;
maxino = super->fs_ncg * super->fs_ipg - 1;
/* first skip the name of the filesystem */
while ((c = getchar()) != EOF && (c < '0' || c > '9'))
while ((c = getchar()) != EOF && c != '\n');
ungetc(c,stdin);
while (scanf("%u",&inode) == 1) {
if (inode > maxino) {
warnx("illegal inode %d",inode);
return;
}
errno = 0;
if ((dp = get_inode(fd,super,inode))
&& !isfree(super, dp)) {
printf("%s\t",user(DIP(super, dp, di_uid))->name);
/* now skip whitespace */
while ((c = getchar()) == ' ' || c == '\t');
/* and print out the remainder of the input line */
while (c != EOF && c != '\n') {
putchar(c);
c = getchar();
}
putchar('\n');
} else {
if (errno) {
err(1, "%s", name);
}
/* skip this line */
while ((c = getchar()) != EOF && c != '\n');
}
if (c == EOF)
break;
}
}
static void
usage()
{
#ifdef COMPAT
fprintf(stderr,"usage: quot [-nfcvha] [filesystem ...]\n");
#else /* COMPAT */
fprintf(stderr,"usage: quot [-acfhknv] [filesystem ...]\n");
#endif /* COMPAT */
exit(1);
}
/*
* Possible superblock locations ordered from most to least likely.
*/
static int sblock_try[] = SBLOCKSEARCH;
static char superblock[SBLOCKSIZE];
void
quot(name,mp)
char *name, *mp;
{
int i, fd;
struct fs *fs;
get_inode(-1, NULL, 0); /* flush cache */
inituser();
initfsizes();
if ((fd = open(name,0)) < 0) {
warn("%s", name);
close(fd);
return;
}
for (i = 0; sblock_try[i] != -1; i++) {
if (lseek(fd, sblock_try[i], 0) != sblock_try[i]) {
close(fd);
return;
}
if (read(fd, superblock, SBLOCKSIZE) != SBLOCKSIZE) {
close(fd);
return;
}
fs = (struct fs *)superblock;
if ((fs->fs_magic == FS_UFS1_MAGIC ||
(fs->fs_magic == FS_UFS2_MAGIC &&
fs->fs_sblockloc == sblock_try[i])) &&
fs->fs_bsize <= MAXBSIZE &&
fs->fs_bsize >= sizeof(struct fs))
break;
}
if (sblock_try[i] == -1) {
warnx("%s: not a BSD filesystem",name);
close(fd);
return;
}
printf("%s:",name);
if (mp)
printf(" (%s)",mp);
putchar('\n');
(*func)(fd, fs, name);
close(fd);
}
int
main(argc,argv)
int argc;
char **argv;
{
char all = 0;
struct statfs *mp;
struct fstab *fs;
char dev[MNAMELEN + 1];
char *nm;
int cnt;
func = douser;
#ifndef COMPAT
header = getbsize(&headerlen,&blocksize);
#endif
while (--argc > 0 && **++argv == '-') {
while (*++*argv) {
switch (**argv) {
case 'n':
func = donames;
break;
case 'c':
func = dofsizes;
break;
case 'a':
all = 1;
break;
case 'f':
count = 1;
break;
case 'h':
estimate = 1;
break;
#ifndef COMPAT
case 'k':
blocksize = 1024;
break;
#endif /* COMPAT */
case 'v':
unused = 1;
break;
default:
usage();
}
}
}
if (all) {
cnt = getmntinfo(&mp,MNT_NOWAIT);
for (; --cnt >= 0; mp++) {
if (!strncmp(mp->f_fstypename, "ufs", MFSNAMELEN)) {
if ((nm = strrchr(mp->f_mntfromname,'/'))) {
sprintf(dev,"%s%s",_PATH_DEV,nm + 1);
nm = dev;
} else
nm = mp->f_mntfromname;
quot(nm,mp->f_mntonname);
}
}
}
while (--argc >= 0) {
if ((fs = getfsfile(*argv)) != NULL)
quot(fs->fs_spec, 0);
else
quot(*argv,0);
argv++;
}
return 0;
}