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| author | emax <emax@FreeBSD.org> | 2014-04-16 17:57:08 +0000 |
|---|---|---|
| committer | emax <emax@FreeBSD.org> | 2014-04-16 17:57:08 +0000 |
| commit | 13d344e5ca522ba75cd119fe0c59cc076f815ca9 (patch) | |
| tree | 6546495a7581ac22cbef5336cfa8fae6bd957a6b /sys/kern/subr_devstat.c | |
| parent | 71409ea2b1129ef27f869776eb6c227300afbb10 (diff) | |
| download | FreeBSD-src-13d344e5ca522ba75cd119fe0c59cc076f815ca9.zip FreeBSD-src-13d344e5ca522ba75cd119fe0c59cc076f815ca9.tar.gz | |
MFC r263690
change defaule permissions on /dev/devstat. while i'm here remove
D_NEEDGIANT flag
Submitted by: jhb
Reviewed by: jhb, scottl, rwatson, delphij, phk
Diffstat (limited to 'sys/kern/subr_devstat.c')
| -rw-r--r-- | sys/kern/subr_devstat.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/kern/subr_devstat.c b/sys/kern/subr_devstat.c index 40e04a0..436dbca 100644 --- a/sys/kern/subr_devstat.c +++ b/sys/kern/subr_devstat.c @@ -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; } |
