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[Qemu-devel] [PATCH V12 11/15] hw/9pfs: chmod in chroot environment
From: |
M. Mohan Kumar |
Subject: |
[Qemu-devel] [PATCH V12 11/15] hw/9pfs: chmod in chroot environment |
Date: |
Mon, 5 Sep 2011 21:48:32 +0530 |
Add support to do chmod operation in chroot process.
Signed-off-by: M. Mohan Kumar <address@hidden>
---
hw/9pfs/virtio-9p-chroot-worker.c | 18 ++++++++++++++++++
hw/9pfs/virtio-9p-chroot.h | 1 +
hw/9pfs/virtio-9p-local.c | 5 +++--
3 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/hw/9pfs/virtio-9p-chroot-worker.c
b/hw/9pfs/virtio-9p-chroot-worker.c
index 9bb94f2..d297b50 100644
--- a/hw/9pfs/virtio-9p-chroot-worker.c
+++ b/hw/9pfs/virtio-9p-chroot-worker.c
@@ -198,6 +198,21 @@ static int chroot_do_rename(V9fsFileObjectRequest *request)
return 0;
}
+/*
+ * Change permissions of a file object
+ * Returns 0 on success and -errno on failure
+ */
+static int chroot_do_chmod(V9fsFileObjectRequest *request)
+{
+ int retval;
+
+ retval = chmod(request->path.path, request->data.mode);
+ if (retval < 0) {
+ return -errno;
+ }
+ return 0;
+}
+
static void chroot_daemonize(int chroot_sock)
{
sigset_t sigset;
@@ -307,6 +322,9 @@ int v9fs_chroot(FsContext *fs_ctx)
case T_RENAME:
retval = chroot_do_rename(&request);
break;
+ case T_CHMOD:
+ retval = chroot_do_chmod(&request);
+ break;
default:
retval = -1;
break;
diff --git a/hw/9pfs/virtio-9p-chroot.h b/hw/9pfs/virtio-9p-chroot.h
index fda60af..fc7a134 100644
--- a/hw/9pfs/virtio-9p-chroot.h
+++ b/hw/9pfs/virtio-9p-chroot.h
@@ -11,6 +11,7 @@
#define T_LINK 6
#define T_REMOVE 7
#define T_RENAME 8
+#define T_CHMOD 9
#define V9FS_FD_VALID INT_MAX
diff --git a/hw/9pfs/virtio-9p-local.c b/hw/9pfs/virtio-9p-local.c
index 68551e2..50e55ed 100644
--- a/hw/9pfs/virtio-9p-local.c
+++ b/hw/9pfs/virtio-9p-local.c
@@ -302,9 +302,10 @@ static int local_chmod(FsContext *fs_ctx, V9fsPath
*fs_path, FsCred *credp)
if (fs_ctx->fs_sm == SM_MAPPED) {
return local_set_xattr(rpath(fs_ctx, path, buffer), credp);
- } else if ((fs_ctx->fs_sm == SM_PASSTHROUGH) ||
- (fs_ctx->fs_sm == SM_NONE)) {
+ } else if (fs_ctx->fs_sm == SM_NONE) {
return chmod(rpath(fs_ctx, path, buffer), credp->fc_mode);
+ } else {
+ return passthrough_request(fs_ctx, NULL, path, 0, credp, T_CHMOD);
}
return -1;
}
--
1.7.6
- [Qemu-devel] [PATCH V12 00/15] virtio-9p: chroot environment for passthrough security model, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 12/15] hw/9pfs: chown in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 08/15] hw/9pfs: Removing file or directory in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 10/15] hw/9pfs: Move file post creation changes to none security model, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 14/15] hw/9pfs: readlink in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 09/15] hw/9pfs: Rename in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 15/15] hw/9pfs: Chroot environment for other functions, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 07/15] hw/9pfs: Creating special files in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 13/15] hw/9pfs: stat in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 11/15] hw/9pfs: chmod in chroot environment,
M. Mohan Kumar <=
- [Qemu-devel] [PATCH V12 04/15] hw/9pfs: qemu interfaces for chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 05/15] hw/9pfs: Support for opening a file in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 02/15] hw/9pfs: Enable CONFIG_THREAD if CONFIG_VIRTFS is enabled, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 01/15] Implement qemu_read_full, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 06/15] hw/9pfs: Create support in chroot environment, M. Mohan Kumar, 2011/09/05
- [Qemu-devel] [PATCH V12 03/15] hw/9pfs: Provide chroot worker side interfaces, M. Mohan Kumar, 2011/09/05
- Re: [Qemu-devel] [PATCH V12 00/15] virtio-9p: chroot environment for passthrough security model, Stefan Hajnoczi, 2011/09/06