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Enforce mode parity limits

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This commit is contained in:
Andrea Mazzoleni 2026-08-20 01:22:31 +02:00
parent 114c5ab5b8
commit 5325c11b10
4 changed files with 16 additions and 6 deletions
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16
raid/module.c
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@ -37,7 +37,7 @@ static struct raid_rec_algo raid_rec_algo_aes[RAID_PARITY_MAX];
static struct raid_gen_algo *raid_gen_algo;
static struct raid_rec_algo *raid_rec_algo;
static int raid_mode_active = RAID_MODE_GET;
int raid_mode_active = RAID_MODE_GET;
const uint8_t(*raid_gfmul)[256];
const uint8_t *raid_gfexp;
@ -80,8 +80,9 @@ void raid_gen(int nd, int np, size_t size, void **v)
/* enforce limit on number of failures */
BUG_ON(np < 1);
BUG_ON(np > RAID_PARITY_MAX);
BUG_ON(np > RAID_PARITY_MAX || (raid_mode_active == RAID_MODE_VANDERMONDE_RAID && np > 3));
BUG_ON(raid_gen_ptr[np - 1] == 0);
raid_gen_ptr[np - 1](nd, size, v);
}
@ -104,7 +105,7 @@ void raid_rec(int nr, int *ir, int nd, int np, size_t size, void **v)
/* enforce limit on number of failures */
BUG_ON(nr > np);
BUG_ON(np > RAID_PARITY_MAX);
BUG_ON(np > RAID_PARITY_MAX || (raid_mode_active == RAID_MODE_VANDERMONDE_RAID && np > 3));
/* enforce order in index vector */
BUG_ON(nr >= 2 && ir[0] >= ir[1]);
@ -183,9 +184,14 @@ void raid_data(int nr, int *id, int *ip, int nd, size_t size, void **v)
BUG_ON(nr >= 5 && ip[3] >= ip[4]);
BUG_ON(nr >= 6 && ip[4] >= ip[5]);
/* enforce limit on index vector for parity */
BUG_ON(nr > 0 && (ip[nr - 1] >= RAID_PARITY_MAX || (raid_mode_active == RAID_MODE_VANDERMONDE_RAID && ip[nr - 1] >= 3)));
/* if failed data is present */
if (nr != 0)
raid_rec_algo[nr - 1].rec(nr, id, ip, nd, size, v);
if (nr != 0) {
BUG_ON(raid_rec_ptr[nr - 1] == 0);
raid_rec_ptr[nr - 1](nr, id, ip, nd, size, v);
}
}
const char * raid_gen_tag(int na)