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| author | phk <phk@FreeBSD.org> | 2002-04-09 15:43:32 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 2002-04-09 15:43:32 +0000 |
| commit | a90e28ebbb699c856787836be56197be575fad47 (patch) | |
| tree | b29d97c613e2113a270ed79ca6d8e042d070ec82 /sys/kern/subr_disk.c | |
| parent | c2f17d16c728a0248466b433fc6c8ad52023ac3d (diff) | |
| download | FreeBSD-src-a90e28ebbb699c856787836be56197be575fad47.zip FreeBSD-src-a90e28ebbb699c856787836be56197be575fad47.tar.gz | |
Implement DIOCGFRONTSTUFF ioctl which reports how many bytes from the start
of the device magic stuff might occupy.
Sponsored by: DARPA & NAI Labs.
Diffstat (limited to 'sys/kern/subr_disk.c')
| -rw-r--r-- | sys/kern/subr_disk.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/kern/subr_disk.c b/sys/kern/subr_disk.c index b1f3e6a..1982e7f 100644 --- a/sys/kern/subr_disk.c +++ b/sys/kern/subr_disk.c @@ -394,6 +394,10 @@ diskioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td) u = *(u_int *)data; return (diskdumpconf(u, dev, dp)); } + if (cmd == DIOCGFRONTSTUFF) { + *(off_t *)data = 8192; /* XXX: crude but enough) */ + return (0); + } error = dsioctl(dev, cmd, data, fflag, &dp->d_slice); if (error == ENOIOCTL) error = dp->d_devsw->d_ioctl(dev, cmd, data, fflag, td); |
