/*
* Check the directory entry in SFD. INDEX is its offset, and PATH is
* its name; these are used for printing messages.
*/
static
int
pass1_direntry(const char *path, uint32_t index, struct sfs_dir *sfd)
{
int dchanged = 0;
uint32_t nblocks;
nblocks = sb_totalblocks();
if (sfd->sfd_ino == SFS_NOINO) {
if (sfd->sfd_name[0] != 0) {
setbadness(EXIT_RECOV);
warnx("Directory %s entry %lu has name but no file",
path, (unsigned long) index);
sfd->sfd_name[0] = 0;
dchanged = 1;
}
}
else if (sfd->sfd_ino >= nblocks) {
setbadness(EXIT_RECOV);
warnx("Directory %s entry %lu has out of range "
"inode (cleared)",
path, (unsigned long) index);
sfd->sfd_ino = SFS_NOINO;
sfd->sfd_name[0] = 0;
dchanged = 1;
}
else {
if (sfd->sfd_name[0] == 0) {
/* XXX: what happens if FSCK.n.m already exists? */
snprintf(sfd->sfd_name, sizeof(sfd->sfd_name),
"FSCK.%lu.%lu",
(unsigned long) sfd->sfd_ino,
(unsigned long) uniqueid());
setbadness(EXIT_RECOV);
warnx("Directory %s entry %lu has file but "
"no name (fixed: %s)",
path, (unsigned long) index,
sfd->sfd_name);
dchanged = 1;
}
if (checknullstring(sfd->sfd_name, sizeof(sfd->sfd_name))) {
setbadness(EXIT_RECOV);
warnx("Directory %s entry %lu not "
"null-terminated (fixed)",
path, (unsigned long) index);
dchanged = 1;
}
if (checkbadstring(sfd->sfd_name)) {
setbadness(EXIT_RECOV);
warnx("Directory %s entry %lu contains invalid "
"characters (fixed)",
path, (unsigned long) index);
dchanged = 1;
}
}
return dchanged;
}
static
void
check_sb(void)
{
struct sfs_super sp;
uint32_t i;
int schanged=0;
diskread(&sp, SFS_SB_LOCATION);
swapsb(&sp);
if (sp.sp_magic != SFS_MAGIC) {
errx(EXIT_UNRECOV, "Not an sfs filesystem");
}
assert(nblocks==0);
assert(bitblocks==0);
nblocks = sp.sp_nblocks;
bitblocks = SFS_BITBLOCKS(nblocks);
assert(nblocks>0);
assert(bitblocks>0);
bitmap_init(bitblocks);
for (i=nblocks; i<bitblocks*SFS_BLOCKBITS; i++) {
bitmap_mark(i, B_PASTEND, 0);
}
if (checknullstring(sp.sp_volname, sizeof(sp.sp_volname))) {
warnx("Volume name not null-terminated (fixed)");
setbadness(EXIT_RECOV);
schanged = 1;
}
if (checkbadstring(sp.sp_volname)) {
warnx("Volume name contains illegal characters (fixed)");
setbadness(EXIT_RECOV);
schanged = 1;
}
if (schanged) {
swapsb(&sp);
diskwrite(&sp, SFS_SB_LOCATION);
}
bitmap_mark(SFS_SB_LOCATION, B_SUPERBLOCK, 0);
for (i=0; i<bitblocks; i++) {
bitmap_mark(SFS_MAP_LOCATION+i, B_BITBLOCK, i);
}
}
static
int
check_dir_entry(const char *pathsofar, uint32_t index, struct sfs_dir *sfd)
{
int dchanged = 0;
if (sfd->sfd_ino == SFS_NOINO) {
if (sfd->sfd_name[0] != 0) {
setbadness(EXIT_RECOV);
warnx("Directory /%s entry %lu has name but no file",
pathsofar, (unsigned long) index);
sfd->sfd_name[0] = 0;
dchanged = 1;
}
}
else {
if (sfd->sfd_name[0] == 0) {
snprintf(sfd->sfd_name, sizeof(sfd->sfd_name),
"FSCK.%lu.%lu",
(unsigned long) sfd->sfd_ino,
(unsigned long) uniquecounter++);
setbadness(EXIT_RECOV);
warnx("Directory /%s entry %lu has file but "
"no name (fixed: %s)",
pathsofar, (unsigned long) index,
sfd->sfd_name);
dchanged = 1;
}
if (checknullstring(sfd->sfd_name, sizeof(sfd->sfd_name))) {
setbadness(EXIT_RECOV);
warnx("Directory /%s entry %lu not "
"null-terminated (fixed)",
pathsofar, (unsigned long) index);
dchanged = 1;
}
if (checkbadstring(sfd->sfd_name)) {
setbadness(EXIT_RECOV);
warnx("Directory /%s entry %lu contains invalid "
"characters (fixed)",
pathsofar, (unsigned long) index);
dchanged = 1;
}
}
return dchanged;
}