diff options
| author |   sf <sf@openbsd.org> | 2017-05-29 14:07:16 +0000 |
|---|---|---|
| committer | sf <sf@openbsd.org> | 2017-05-29 14:07:16 +0000 |
| commit | a34a8c9c6a452cfd716b8f8bd96df8edb08fa1fe (patch) | |
| tree | df4d92150fc2ed756f03f972344754af640cfdc9 /sys/msdosfs | |
| parent | Add an ioctl to tell storage devices to flush their internal caches (diff) | |
| download | wireguard-openbsd-a34a8c9c6a452cfd716b8f8bd96df8edb08fa1fe.tar.xz wireguard-openbsd-a34a8c9c6a452cfd716b8f8bd96df8edb08fa1fe.zip | |
msdosfs & ffs: flush cache if updating mount from r/w to r/o
ok deraadt@
Diffstat (limited to 'sys/msdosfs')
| -rw-r--r-- | sys/msdosfs/msdosfs_vfsops.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sys/msdosfs/msdosfs_vfsops.c b/sys/msdosfs/msdosfs_vfsops.c index e13b0b1ea0b..5c426a2c37e 100644 --- a/sys/msdosfs/msdosfs_vfsops.c +++ b/sys/msdosfs/msdosfs_vfsops.c @@ -1,4 +1,4 @@ -/* $OpenBSD: msdosfs_vfsops.c,v 1.83 2016/10/10 00:34:50 bluhm Exp $ */ +/* $OpenBSD: msdosfs_vfsops.c,v 1.84 2017/05/29 14:07:16 sf Exp $ */ /* $NetBSD: msdosfs_vfsops.c,v 1.48 1997/10/18 02:54:57 briggs Exp $ */ /*- @@ -64,6 +64,7 @@ #include <sys/malloc.h> #include <sys/dirent.h> #include <sys/disk.h> +#include <sys/dkio.h> #include <sys/stdint.h> #include <msdosfs/bpb.h> @@ -128,8 +129,14 @@ msdosfs_mount(struct mount *mp, const char *path, void *data, if (mp->mnt_flag & MNT_FORCE) flags |= FORCECLOSE; error = vflush(mp, NULLVP, flags); - if (!error) + if (!error) { + int force = 0; + pmp->pm_flags |= MSDOSFSMNT_RONLY; + /* may be not supported, ignore error */ + VOP_IOCTL(pmp->pm_devvp, DIOCCACHESYNC, + &force, FWRITE, FSCRED, p); + } } if (!error && (mp->mnt_flag & MNT_RELOAD)) /* not yet implemented */ |