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| author | phk <phk@FreeBSD.org> | 1999-08-15 09:32:47 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 1999-08-15 09:32:47 +0000 |
| commit | 594f438308c2d97ad2e81ac1a51a4915495dca97 (patch) | |
| tree | 28960ad6301e545eb6d4c31465d688cbaf4ded8e /sys/kern | |
| parent | aae3aaba82216fc7d5a3ace4f71ec6eb78071eb7 (diff) | |
| download | FreeBSD-src-594f438308c2d97ad2e81ac1a51a4915495dca97.zip FreeBSD-src-594f438308c2d97ad2e81ac1a51a4915495dca97.tar.gz | |
Introduce lminor(dev_t dev), which returns a linear minor number,
ie: hides the fact that the major number is stuck in the middle.
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_conf.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sys/kern/kern_conf.c b/sys/kern/kern_conf.c index a3fedc1..7be808e 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 1.55 1999/08/08 18:42:47 phk Exp $ + * $Id: kern_conf.c,v 1.56 1999/08/13 10:29:20 phk Exp $ */ #include <sys/param.h> @@ -194,6 +194,17 @@ minor(dev_t x) return(x->si_udev & 0xffff00ff); } +int +lminor(dev_t x) +{ + int i; + + if (x == NODEV) + return NOUDEV; + i = minor(x); + return ((i & 0xff) | (i >> 8)); +} + dev_t makebdev(int x, int y) { |
