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mkfs.mfs:add comment about the overflow check.

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Change-Id: I1f09c3a62377164296037f6dc9b7874023123311
This commit is contained in:
Kees Jongenburger 2013-04-18 17:38:46 +02:00
parent a4eca06cca
commit 04ad4fa1a2
1 changed files with 3 additions and 0 deletions
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3
usr.sbin/mkfs.mfs/mkfs.c
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@ -562,11 +562,14 @@ ino_t inodes;
#define BIGGERBLOCKS "Please try a larger block size for an FS of this size.\n"
sup->s_imap_blocks = nb = bitmapsize((uint32_t) (1 + inodes), block_size);
/* Checks for an overflow nb is uint32_t while s_imap_blocks is of type
* int16_t */
if(sup->s_imap_blocks != nb) {
fprintf(stderr, "mkfs: too many inode bitmap blocks.\n" BIGGERBLOCKS);
exit(1);
}
sup->s_zmap_blocks = nb = bitmapsize((uint32_t) zones, block_size);
/* Idem here check for overflow */
if(nb != sup->s_zmap_blocks) {
fprintf(stderr, "mkfs: too many block bitmap blocks.\n" BIGGERBLOCKS);
exit(1);