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| author | njl <njl@FreeBSD.org> | 2002-10-15 21:28:50 +0000 |
|---|---|---|
| committer | njl <njl@FreeBSD.org> | 2002-10-15 21:28:50 +0000 |
| commit | 45684fd1854bac5defd1158981c98a6fe22fb5a7 (patch) | |
| tree | 8daa68ffc3756585e2cbc39075a538c3abd565dd /sys/geom/geom_dev.c | |
| parent | 174c4a00340b84a2df9e0f1df28291d7ef2fd517 (diff) | |
| download | FreeBSD-src-45684fd1854bac5defd1158981c98a6fe22fb5a7.zip FreeBSD-src-45684fd1854bac5defd1158981c98a6fe22fb5a7.tar.gz | |
Return an error if the drive reports heads/sectors that do not make sense.
This fixes a divide by zero in fdisk(8)
Reviewed by: phk
Diffstat (limited to 'sys/geom/geom_dev.c')
| -rw-r--r-- | sys/geom/geom_dev.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/geom/geom_dev.c b/sys/geom/geom_dev.c index 1b30703..8fb6727 100644 --- a/sys/geom/geom_dev.c +++ b/sys/geom/geom_dev.c @@ -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); |
