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Hold threadref while we throb cdevsw in devtoname()

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This commit is contained in:
Poul-Henning Kamp 2004-09-24 06:29:23 +00:00
parent 38f878d739
commit 8ff33adb8c
1 changed files with 10 additions and 6 deletions
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16
sys/kern/kern_conf.c
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@ -621,20 +621,24 @@ const char *
devtoname(struct cdev *dev)
{
char *p;
struct cdevsw *csw;
int mynor;
if (dev->si_name[0] == '#' || dev->si_name[0] == '\0') {
p = dev->si_name;
if (devsw(dev))
sprintf(p, "#%s/", devsw(dev)->d_name);
else
sprintf(p, "#%d/", major(dev));
sprintf(p, "#%d", major(dev));
p += strlen(p);
csw = dev_refthread(dev);
if (csw != NULL) {
sprintf(p, "(%s)", csw->d_name);
dev_relthread(dev);
}
p += strlen(p);
mynor = minor(dev);
if (mynor < 0 || mynor > 255)
sprintf(p, "%#x", (u_int)mynor);
sprintf(p, "/%#x", (u_int)mynor);
else
sprintf(p, "%d", mynor);
sprintf(p, "/%d", mynor);
}
return (dev->si_name);
}