diff options
Diffstat (limited to 'share/examples/kld/cdev/module/cdevmod.c')
| -rw-r--r-- | share/examples/kld/cdev/module/cdevmod.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/share/examples/kld/cdev/module/cdevmod.c b/share/examples/kld/cdev/module/cdevmod.c index 5c9ef47e47d7..cb80a72277c0 100644 --- a/share/examples/kld/cdev/module/cdevmod.c +++ b/share/examples/kld/cdev/module/cdevmod.c @@ -64,6 +64,8 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * + * + * $FreeBSD$ */ #include <sys/param.h> #include <sys/systm.h> @@ -78,25 +80,27 @@ static struct cdevsw my_devsw = { /* open */ mydev_open, /* close */ mydev_close, - /* read */ noread, - /* write */ nowrite, + /* read */ mydev_read, + /* write */ mydev_write, /* ioctl */ mydev_ioctl, - /* stop */ nostop, - /* reset */ noreset, - /* devtotty */ nodevtotty, /* poll */ nopoll, /* mmap */ nommap, /* strategy */ nostrategy, /* name */ "cdev", - /* parms */ noparms, /* maj */ CDEV_MAJOR, /* dump */ nodump, /* psize */ nopsize, /* flags */ D_TTY, - /* maxio */ 0, /* bmaj */ -1 }; +/* + * Used as the variable that is the reference to our device + * in devfs... we must keep this variable sane until we + * call kldunload. + */ +static dev_t sdev; + /* * This function is called each time the module is loaded or unloaded. * Since we are a miscellaneous module, we have to provide whatever @@ -123,10 +127,12 @@ cdev_load(module_t mod, int cmd, void *arg) printf("Copyright (c) 1998\n"); printf("Rajesh Vaidheeswarran\n"); printf("All rights reserved\n"); + sdev = make_dev(&my_devsw, 0, UID_ROOT, GID_WHEEL, 0600, "cdev"); break; /* Success*/ case MOD_UNLOAD: printf("Unloaded kld character device driver\n"); + destroy_dev(sdev); break; /* Success*/ default: /* we only understand load/unload*/ @@ -139,4 +145,4 @@ cdev_load(module_t mod, int cmd, void *arg) /* Now declare the module to the system */ -DEV_MODULE(cdev, CDEV_MAJOR, -1, my_devsw, cdev_load, 0); +DEV_MODULE(cdev, cdev_load, NULL); |