From: M. Mohan Kumar <mo...@in.ibm.com> Implement 9p2000.L version of open(LOPEN) interface in qemu 9p server.
For LOPEN, no need to convert the flags to and from 9p mode to VFS mode. Synopsis: size[4] Tlopen tag[2] fid[4] mode[4] size[4] Rlopen tag[2] qid[13] iounit[4] Current qemu 9p server does not support following flags: O_NOCTTY, O_NONBLOCK, O_ASYNC & O_CLOEXEC Signed-off-by: M. Mohan Kumar <mo...@in.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jv...@linux.vnet.ibm.com> --- hw/virtio-9p.c | 24 ++++++++++++++++++++++-- hw/virtio-9p.h | 2 ++ 2 files changed, 24 insertions(+), 2 deletions(-) diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c index 156d5dd..a9da10f 100644 --- a/hw/virtio-9p.c +++ b/hw/virtio-9p.c @@ -1591,8 +1591,19 @@ out: qemu_free(vs); } +static inline int valid_flags(int flag) +{ + if (flag & O_NOCTTY || flag & O_NONBLOCK || flag & O_ASYNC || + flag & O_CLOEXEC) + return 0; + else + return 1; +} + static void v9fs_open_post_lstat(V9fsState *s, V9fsOpenState *vs, int err) { + int flags; + if (err) { err = -errno; goto out; @@ -1604,8 +1615,16 @@ static void v9fs_open_post_lstat(V9fsState *s, V9fsOpenState *vs, int err) vs->fidp->dir = v9fs_do_opendir(s, &vs->fidp->path); v9fs_open_post_opendir(s, vs, err); } else { - vs->fidp->fd = v9fs_do_open(s, &vs->fidp->path, - omode_to_uflags(vs->mode)); + if (s->proto_version == V9FS_PROTO_2000L) { + if (!valid_flags(vs->mode)) { + err = -EINVAL; + goto out; + } + flags = vs->mode; + } else { + flags = omode_to_uflags(vs->mode); + } + vs->fidp->fd = v9fs_do_open(s, &vs->fidp->path, flags); v9fs_open_post_open(s, vs, err); } return; @@ -3046,6 +3065,7 @@ static pdu_handler_t *pdu_handlers[] = { [P9_TRENAME] = v9fs_rename, [P9_TMKDIR] = v9fs_mkdir, [P9_TVERSION] = v9fs_version, + [P9_TLOPEN] = v9fs_open, [P9_TATTACH] = v9fs_attach, [P9_TSTAT] = v9fs_stat, [P9_TWALK] = v9fs_walk, diff --git a/hw/virtio-9p.h b/hw/virtio-9p.h index e9cc458..0c79400 100644 --- a/hw/virtio-9p.h +++ b/hw/virtio-9p.h @@ -15,6 +15,8 @@ enum { P9_TSTATFS = 8, P9_RSTATFS, + P9_TLOPEN = 12, + P9_RLOPEN, P9_TLCREATE = 14, P9_RLCREATE, P9_TSYMLINK = 16, -- 1.6.5.2