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Return an error if the drive reports heads/sectors that do not make sense.

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This fixes a divide by zero in fdisk(8)

Reviewed by:	phk
This commit is contained in:
Nate Lawson 2002-10-15 21:28:50 +00:00
parent 9e3bf94fd7
commit 02fcfac0ad
1 changed files with 8 additions and 0 deletions
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8
sys/geom/geom_dev.c
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@ -245,15 +245,23 @@ g_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
switch (cmd) {
case DIOCGSECTORSIZE:
error = g_io_getattr("GEOM::sectorsize", cp, &i, data);
if (error == 0 && *(u_int *)data == 0)
error = ENOENT;
break;
case DIOCGMEDIASIZE:
error = g_io_getattr("GEOM::mediasize", cp, &i, data);
if (error == 0 && *(u_int *)data == 0)
error = ENOENT;
break;
case DIOCGFWSECTORS:
error = g_io_getattr("GEOM::fwsectors", cp, &i, data);
if (error == 0 && *(u_int *)data == 0)
error = ENOENT;
break;
case DIOCGFWHEADS:
error = g_io_getattr("GEOM::fwheads", cp, &i, data);
if (error == 0 && *(u_int *)data == 0)
error = ENOENT;
break;
case DIOCGFRONTSTUFF:
error = g_io_getattr("GEOM::frontstuff", cp, &i, data);