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Fix several potential overflows in UNMAP code.

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MFC after:	1 week
This commit is contained in:
Alexander Motin 2015-01-26 15:47:08 +00:00
parent 8aaa1a77ec
commit 183b03c81c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=277758
1 changed files with 6 additions and 6 deletions
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12
sys/cam/scsi/scsi_da.c
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@ -1910,18 +1910,18 @@ dadeletemaxsize(struct da_softc *softc, da_delete_methods delete_method)
sectors = (off_t)ATA_DSM_RANGE_MAX * softc->trim_max_ranges;
break;
case DA_DELETE_WS16:
sectors = (off_t)min(softc->ws_max_blks, WS16_MAX_BLKS);
sectors = omin(softc->ws_max_blks, WS16_MAX_BLKS);
break;
case DA_DELETE_ZERO:
case DA_DELETE_WS10:
sectors = (off_t)min(softc->ws_max_blks, WS10_MAX_BLKS);
sectors = omin(softc->ws_max_blks, WS10_MAX_BLKS);
break;
default:
return 0;
}
return (off_t)softc->params.secsize *
min(sectors, (off_t)softc->params.sectors);
omin(sectors, softc->params.sectors);
}
static void
@ -2684,7 +2684,7 @@ da_delete_trim(struct cam_periph *periph, union ccb *ccb, struct bio *bp)
/* Try to extend the previous range. */
if (lba == lastlba) {
c = min(count, ATA_DSM_RANGE_MAX - lastcount);
c = omin(count, ATA_DSM_RANGE_MAX - lastcount);
lastcount += c;
off = (ranges - 1) * 8;
buf[off + 6] = lastcount & 0xff;
@ -2694,7 +2694,7 @@ da_delete_trim(struct cam_periph *periph, union ccb *ccb, struct bio *bp)
}
while (count > 0) {
c = min(count, ATA_DSM_RANGE_MAX);
c = omin(count, ATA_DSM_RANGE_MAX);
off = ranges * 8;
buf[off + 0] = lba & 0xff;
@ -2770,7 +2770,7 @@ da_delete_ws(struct cam_periph *periph, union ccb *ccb, struct bio *bp)
"%s issuing short delete %ld > %ld\n",
da_delete_method_desc[softc->delete_method],
count, ws_max_blks);
count = min(count, ws_max_blks);
count = omin(count, ws_max_blks);
break;
}
bp1 = bioq_first(&softc->delete_queue);