diff options
Diffstat (limited to 'sys/dev/md')
| -rw-r--r-- | sys/dev/md/md.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/sys/dev/md/md.c b/sys/dev/md/md.c index 908d123..07fbbb3 100644 --- a/sys/dev/md/md.c +++ b/sys/dev/md/md.c @@ -361,6 +361,8 @@ g_md_access(struct g_provider *pp, int r, int w, int e) r += pp->acr; w += pp->acw; e += pp->ace; + if ((sc->flags & MD_READONLY) != 0 && w > 0) + return (EROFS); if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) { sc->opencount = 1; } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) { @@ -880,16 +882,14 @@ mdcreate_vnode(struct md_s *sc, struct md_ioctl *mdio, struct thread *td) if (error != 0) return (error); flags = FREAD|FWRITE; + /* + * If the user specified that this is a read only device, unset the + * FWRITE mask before trying to open the backing store. + */ + if ((mdio->md_options & MD_READONLY) != 0) + flags &= ~FWRITE; NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, sc->file, td); error = vn_open(&nd, &flags, 0, -1); - if (error != 0) { - NDFREE(&nd, NDF_ONLY_PNBUF); - if (error != EACCES && error != EPERM && error != EROFS) - return (error); - flags &= ~FWRITE; - NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, sc->file, td); - error = vn_open(&nd, &flags, 0, -1); - } NDFREE(&nd, NDF_ONLY_PNBUF); if (error != 0) return (error); |
