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[Qemu-devel] [PATCH-V3 16/24] qemu: virtio-9p: Implement LOPEN
From: |
Venkateswararao Jujjuri (JV) |
Subject: |
[Qemu-devel] [PATCH-V3 16/24] qemu: virtio-9p: Implement LOPEN |
Date: |
Thu, 22 Jul 2010 08:58:03 -0700 |
From: M. Mohan Kumar <address@hidden>
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 <address@hidden>
Signed-off-by: Venkateswararao Jujjuri <address@hidden>
---
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 4594f48..b4badc1 100644
--- a/hw/virtio-9p.c
+++ b/hw/virtio-9p.c
@@ -1621,8 +1621,19 @@ 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;
@@ -1634,8 +1645,16 @@ 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;
@@ -3076,6 +3095,7 @@ 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 4d179b7..542d0bf 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
- [Qemu-devel] [PATCH-V3 14/24] qemu: virtio-9p: Implement TMKDIR, (continued)
- [Qemu-devel] [PATCH-V3 14/24] qemu: virtio-9p: Implement TMKDIR, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 11/24] [virtio-9p] Define and implement TSYMLINK for 9P2000.L, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 12/24] [virtio-9p] This patch implements TLCREATE for 9p2000.L protocol., Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 21/24] virtio-9p: Add SM_NONE security model, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 05/24] virtio-9p: Compute iounit based on host filesystem block size, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 24/24] virtio-9p: Fix formatting issues in v9fs_wstat_post_chown(), Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 08/24] [virtio-9p] Make v9fs_do_utimensat accept timespec structures instead of v9stat., Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 18/24] virtio-9p: Implement TXATTRWALK, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 13/24] qemu: virtio-9p: Implement TMKNOD, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 15/24] rename - change name of file or directory, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 16/24] qemu: virtio-9p: Implement LOPEN,
Venkateswararao Jujjuri (JV) <=
- [Qemu-devel] [PATCH-V3 19/24] virtio-9p: Implement TXATTRCREATE, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 23/24] virtio-9p: Fix the memset usage, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 22/24] virtio-9p: Use lchown which won't follow symlink, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 20/24] virtio-9p: Hide user.virtfs xattr in case of mapped security., Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 03/24] virtio-9p: Return correct error from v9fs_remove, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 07/24] virtio-9p: Do not reset atime, Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 06/24] virtio-9p: getattr server implementation for 9P2000.L protocol., Venkateswararao Jujjuri (JV), 2010/07/22
- [Qemu-devel] [PATCH-V3 04/24] [V4] virtio-9p: readdir implementation for 9p2000.L, Venkateswararao Jujjuri (JV), 2010/07/22