oneechanhax/phunix
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

firstdatazone is prone to overflowing with many inodes.

Browse Source
This commit is contained in:
Ben Gras 2007-06-06 15:14:58 +00:00
parent 26cf8b90ea
commit 2862654b07
1 changed files with 14 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
commands/simple/mkfs.c
View File

@ -450,6 +450,7 @@ ino_t inodes;
unsigned int i;
int inodeblks;
int initblks;
zone_t zi, zz, zd;
zone_t initzones, nrzones, v1sq, v2sq;
zone_t zo;
@ -468,14 +469,14 @@ ino_t inodes;
sup->s_nzones = 0; /* not used in V2 - 0 forces errors early */
sup->s_zones = zones;
}
sup->s_imap_blocks = bitmapsize((bit_t) (1 + inodes), block_size);
sup->s_zmap_blocks = bitmapsize((bit_t) zones, block_size);
sup->s_imap_blocks = zi = bitmapsize((bit_t) (1 + inodes), block_size);
sup->s_zmap_blocks = zz = bitmapsize((bit_t) zones, block_size);
inode_offset = sup->s_imap_blocks + sup->s_zmap_blocks + 2;
inodeblks = (inodes + inodes_per_block - 1) / inodes_per_block;
initblks = inode_offset + inodeblks;
initzones = (initblks + (1 << zone_shift) - 1) >> zone_shift;
nrzones = nrblocks >> zone_shift;
sup->s_firstdatazone = (initblks + (1 << zone_shift) - 1) >> zone_shift;
sup->s_firstdatazone = zd = (initblks + (1 << zone_shift) - 1) >> zone_shift;
zoff = sup->s_firstdatazone - 1;
sup->s_log_zone_size = zone_shift;
if (fs_version == 1) {
@ -503,6 +504,16 @@ ino_t inodes;
}
}
/* checks for size */
if(zi != sup->s_imap_blocks || sup->s_zmap_blocks != zz) {
fprintf(stderr, "imap blocks or zmap blocks fields too small?\n");
exit(1);
}
if(sup->s_firstdatazone != zd) {
fprintf(stderr, "firstdatazone field too small?\n");
exit(1);
}
zone_size = 1 << zone_shift; /* nr of blocks per zone */
if (lseek(fd, (off_t) _STATIC_BLOCK_SIZE, SEEK_SET) == (off_t) -1) {