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MFC r263690

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change defaule permissions on /dev/devstat. while i'm here remove
D_NEEDGIANT flag

Submitted by:	jhb
Reviewed by:	jhb, scottl, rwatson, delphij, phk
This commit is contained in:
emax 2014-04-16 17:57:08 +00:00
parent 71409ea2b1
commit 13d344e5ca
1 changed files with 4 additions and 2 deletions
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6
sys/kern/subr_devstat.c
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@ -462,7 +462,6 @@ static d_mmap_t devstat_mmap;
static struct cdevsw devstat_cdevsw = {
.d_version = D_VERSION,
.d_flags = D_NEEDGIANT,
.d_mmap = devstat_mmap,
.d_name = "devstat",
};
@ -484,13 +483,16 @@ devstat_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
if (nprot != VM_PROT_READ)
return (-1);
mtx_lock(&devstat_mutex);
TAILQ_FOREACH(spp, &pagelist, list) {
if (offset == 0) {
*paddr = vtophys(spp->stat);
mtx_unlock(&devstat_mutex);
return (0);
}
offset -= PAGE_SIZE;
}
mtx_unlock(&devstat_mutex);
return (-1);
}
@ -505,7 +507,7 @@ devstat_alloc(void)
mtx_assert(&devstat_mutex, MA_NOTOWNED);
if (!once) {
make_dev_credf(MAKEDEV_ETERNAL | MAKEDEV_CHECKNAME,
&devstat_cdevsw, 0, NULL, UID_ROOT, GID_WHEEL, 0400,
&devstat_cdevsw, 0, NULL, UID_ROOT, GID_WHEEL, 0444,
DEVSTAT_DEVICE_NAME);
once = 1;
}