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| author | grog <grog@FreeBSD.org> | 1999-06-25 07:49:01 +0000 |
|---|---|---|
| committer | grog <grog@FreeBSD.org> | 1999-06-25 07:49:01 +0000 |
| commit | 700cc4b9df826524cd42ec50162207d169797fc8 (patch) | |
| tree | a657474f703a0cff37af8c99c379c5754bdbeef1 /sys/kern | |
| parent | 9324a238d272e87b3263fa08d100f7124ee4a748 (diff) | |
| download | FreeBSD-src-700cc4b9df826524cd42ec50162207d169797fc8.zip FreeBSD-src-700cc4b9df826524cd42ec50162207d169797fc8.tar.gz | |
Add function cdevsw_remove, the opposite of cdevsw_add: remove an
entry in cdevsw (and bdevsw if appropriate).
Reviewed-by: phk
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_conf.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/sys/kern/kern_conf.c b/sys/kern/kern_conf.c index 2bc5fa1..39ad020 100644 --- a/sys/kern/kern_conf.c +++ b/sys/kern/kern_conf.c @@ -30,7 +30,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: kern_conf.c,v 1.42 1999/06/01 18:56:24 phk Exp $ + * $Id: kern_conf.c,v 1.43 1999/06/01 20:41:26 dt Exp $ */ #include <sys/param.h> @@ -120,6 +120,27 @@ cdevsw_add(struct cdevsw *newentry) return 0; } +/* + * Remove a cdevsw entry + */ + +int +cdevsw_remove(struct cdevsw *oldentry) +{ + if (oldentry->d_maj < 0 || oldentry->d_maj >= NUMCDEVSW) { + printf("%s: ERROR: driver has bogus cdevsw->d_maj = %d\n", + oldentry->d_name, oldentry->d_maj); + return EINVAL; + } + + cdevsw[oldentry->d_maj] = NULL; + + if (oldentry->d_bmaj >= 0 && oldentry->d_bmaj < NUMCDEVSW) + bmaj2cmaj[oldentry->d_bmaj] = NULL; + + return 0; +} + int devsw_module_handler(module_t mod, int what, void* arg) { |
