sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

mkfs.mfs:fix to allow to fill larger file systems.

Browse source 
Allow the number of written blocks to exceed 8 * block_size.

Change-Id: I301ce46a92d86c6220c3af2acee22db26a4b4496
This commit is contained in:
Kees Jongenburger 2013-04-18 14:29:53 +02:00
parent 15bb31ed99
commit a4eca06cca
1 changed files with 17 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
usr.sbin/mkfs.mfs/mkfs.c
View file

@ -984,8 +984,10 @@ int mode, usrid, grpid;
free(inode2);
}
/* Code bellow assumes the bit is in the first inode map block. */
assert(num < block_size * 8);
/* Set the bit in the bit map. */
/* DEBUG FIXME. This assumes the bit is in the first inode map block. */
insert_bit((block_t) INODE_MAP, (int) num);
return(num);
}
@ -996,19 +998,25 @@ static zone_t alloc_zone()
/* Allocate a new zone */
/* Works for zone > block */
block_t b;
zone_t z;
zone_t z,z_number;
unsigned int bits_per_block;
z = next_zone++;
b = z;
if ((b + 1) > nrblocks)
pexit("File system not big enough for all the files");
put_block(b, zero); /* give an empty zone */
/* DEBUG FIXME. This assumes the bit is in the first zone map block. */
insert_bit(zone_map, (int) (z - zoff)); /* lint, NOT OK because
bits_per_block = block_size * 8;
/* translate to block number */
z_number = z - zoff;
insert_bit(zone_map + ( z_number / bits_per_block ), (int) (z_number % bits_per_block )); /* lint, NOT OK because
* z hasn't been broken
* up into block +
* offset yet. */
return(z);
return z;
}
@ -1022,6 +1030,8 @@ int bit;
buf = (bitchunk_t *) alloc_block();
assert(bit >=0);
assert(bit < block_size * 8);
get_block(block, (char *) buf);
w = bit / (8 * sizeof(bitchunk_t));
s = bit % (8 * sizeof(bitchunk_t));
@ -1363,6 +1373,8 @@ block_t n;
int w, s, mask, r;
w = n / 8;
assert(n < nrblocks);
if(w >= umap_array_elements) {
pexit("umap array too small - this can't happen");
}