void
quot(char *name, char *mp)
{
int 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;
}
switch (sbget(fd, &fs, -1)) {
case 0:
break;
case ENOENT:
warn("Cannot find file system superblock");
close(fd);
return;
default:
warn("Unable to read file system superblock");
close(fd);
return;
}
printf("%s:",name);
if (mp)
printf(" (%s)",mp);
putchar('\n');
(*func)(fd, fs, name);
close(fd);
}
int
fstyp_ufs(FILE *fp, char *label, size_t labelsize)
{
struct fs *fs;
switch (sbget(fileno(fp), &fs, STDSB)) {
case 0:
strlcpy(label, fs->fs_volname, labelsize);
return (0);
case ENOENT:
/* Cannot find file system superblock */
return (1);
default:
/* Unable to read file system superblock */
return (1);
}
}
/*
* Read in the super block and its summary info.
*/
int
readsb(int listerr)
{
off_t super;
int bad, ret;
struct fs *fs;
super = bflag ? bflag * dev_bsize : -1;
readcnt[sblk.b_type]++;
if ((ret = sbget(fsreadfd, &fs, super)) != 0) {
switch (ret) {
case EINVAL:
fprintf(stderr, "The previous newfs operation "
"on this volume did not complete.\nYou must "
"complete newfs before using this volume.\n");
exit(11);
case ENOENT:
if (bflag)
fprintf(stderr, "%jd is not a file system "
"superblock\n", super / dev_bsize);
else
fprintf(stderr, "Cannot find file system "
"superblock\n");
return (0);
case EIO:
default:
fprintf(stderr, "I/O error reading %jd\n",
super / dev_bsize);
return (0);
}
}
memcpy(&sblock, fs, fs->fs_sbsize);
free(fs);
/*
* Compute block size that the file system is based on,
* according to fsbtodb, and adjust superblock block number
* so we can tell if this is an alternate later.
*/
dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
sblk.b_bno = sblock.fs_sblockactualloc / dev_bsize;
sblk.b_size = SBLOCKSIZE;
/*
* Compare all fields that should not differ in alternate super block.
* When an alternate super-block is specified this check is skipped.
*/
if (bflag)
goto out;
getblk(&asblk, cgsblock(&sblock, sblock.fs_ncg - 1), sblock.fs_sbsize);
if (asblk.b_errs)
return (0);
bad = 0;
#define CHK(x, y) \
if (altsblock.x != sblock.x) { \
bad++; \
if (listerr && debug) \
printf("SUPER BLOCK VS ALTERNATE MISMATCH %s: " y " vs " y "\n", \
#x, (intmax_t)sblock.x, (intmax_t)altsblock.x); \
}
CHK(fs_sblkno, "%jd");
CHK(fs_cblkno, "%jd");
CHK(fs_iblkno, "%jd");
CHK(fs_dblkno, "%jd");
CHK(fs_ncg, "%jd");
CHK(fs_bsize, "%jd");
CHK(fs_fsize, "%jd");
CHK(fs_frag, "%jd");
CHK(fs_bmask, "%#jx");
CHK(fs_fmask, "%#jx");
CHK(fs_bshift, "%jd");
CHK(fs_fshift, "%jd");
CHK(fs_fragshift, "%jd");
CHK(fs_fsbtodb, "%jd");
CHK(fs_sbsize, "%jd");
CHK(fs_nindir, "%jd");
CHK(fs_inopb, "%jd");
CHK(fs_cssize, "%jd");
CHK(fs_ipg, "%jd");
CHK(fs_fpg, "%jd");
CHK(fs_magic, "%#jx");
#undef CHK
if (bad) {
if (listerr == 0)
return (0);
if (preen)
printf("%s: ", cdevname);
printf(
"VALUES IN SUPER BLOCK LSB=%jd DISAGREE WITH THOSE IN\n"
"LAST ALTERNATE LSB=%jd\n",
sblk.b_bno, asblk.b_bno);
if (reply("IGNORE ALTERNATE SUPER BLOCK") == 0)
return (0);
}
out:
/*
* If not yet done, update UFS1 superblock with new wider fields.
*/
if (sblock.fs_magic == FS_UFS1_MAGIC &&
sblock.fs_maxbsize != sblock.fs_bsize) {
sblock.fs_maxbsize = sblock.fs_bsize;
sblock.fs_time = sblock.fs_old_time;
sblock.fs_size = sblock.fs_old_size;
sblock.fs_dsize = sblock.fs_old_dsize;
sblock.fs_csaddr = sblock.fs_old_csaddr;
sblock.fs_cstotal.cs_ndir = sblock.fs_old_cstotal.cs_ndir;
sblock.fs_cstotal.cs_nbfree = sblock.fs_old_cstotal.cs_nbfree;
sblock.fs_cstotal.cs_nifree = sblock.fs_old_cstotal.cs_nifree;
sblock.fs_cstotal.cs_nffree = sblock.fs_old_cstotal.cs_nffree;
}
havesb = 1;
return (1);
}
