Date: Mon, 24 Mar 2014 18:13:41 +0000 (UTC) From: Maksim Yevmenkin <emax@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r263690 - head/sys/kern Message-ID: <201403241813.s2OIDfEd024721@svn.freebsd.org>
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Author: emax Date: Mon Mar 24 18:13:41 2014 New Revision: 263690 URL: http://svnweb.freebsd.org/changeset/base/263690 Log: change defaule permissions on /dev/devstat. while i'm here remove D_NEEDGIANT flag Submitted by: jhb Reviewed by: jhb, scottl, rwatson, delphij, phk MFC after: 1 week Modified: head/sys/kern/subr_devstat.c Modified: head/sys/kern/subr_devstat.c ============================================================================== --- head/sys/kern/subr_devstat.c Mon Mar 24 15:22:22 2014 (r263689) +++ head/sys/kern/subr_devstat.c Mon Mar 24 18:13:41 2014 (r263690) @@ -460,7 +460,6 @@ 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", }; @@ -482,13 +481,16 @@ devstat_mmap(struct cdev *dev, vm_ooffse 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); } @@ -503,7 +505,7 @@ 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; }
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