Support renaming a file or directory in chroot envirnoment. Add interfaces for renaming in chroot worker and qemu side.
Signed-off-by: M. Mohan Kumar <mo...@in.ibm.com> --- hw/9pfs/virtio-9p-chroot-worker.c | 17 +++++++++++++++++ hw/9pfs/virtio-9p-chroot.h | 1 + hw/9pfs/virtio-9p-local.c | 26 +++++++++++++++----------- 3 files changed, 33 insertions(+), 11 deletions(-) diff --git a/hw/9pfs/virtio-9p-chroot-worker.c b/hw/9pfs/virtio-9p-chroot-worker.c index 40e572c..353aeed 100644 --- a/hw/9pfs/virtio-9p-chroot-worker.c +++ b/hw/9pfs/virtio-9p-chroot-worker.c @@ -176,6 +176,20 @@ static int chroot_do_remove(V9fsFileObjectRequest *request) return 0; } +/* + * Rename a file object + */ +static int chroot_do_rename(V9fsFileObjectRequest *request) +{ + int retval; + + retval = rename(request->path.old_path, request->path.path); + if (retval < 0) { + return -errno; + } + return 0; +} + static void chroot_daemonize(int chroot_sock) { sigset_t sigset; @@ -280,6 +294,9 @@ int v9fs_chroot(FsContext *fs_ctx) case T_REMOVE: retval = chroot_do_remove(&request); break; + case T_RENAME: + retval = chroot_do_rename(&request); + break; default: retval = -1; break; diff --git a/hw/9pfs/virtio-9p-chroot.h b/hw/9pfs/virtio-9p-chroot.h index 2d7984a..e8251b4 100644 --- a/hw/9pfs/virtio-9p-chroot.h +++ b/hw/9pfs/virtio-9p-chroot.h @@ -9,6 +9,7 @@ #define T_SYMLINK 5 #define T_LINK 6 #define T_REMOVE 7 +#define T_RENAME 8 union MsgControl { struct cmsghdr cmsg; diff --git a/hw/9pfs/virtio-9p-local.c b/hw/9pfs/virtio-9p-local.c index c255cbd..48ca7ab 100644 --- a/hw/9pfs/virtio-9p-local.c +++ b/hw/9pfs/virtio-9p-local.c @@ -526,22 +526,26 @@ static int local_truncate(FsContext *ctx, const char *path, off_t size) static int local_rename(FsContext *ctx, const char *oldpath, const char *newpath) { - char *tmp; - int err; - - tmp = qemu_strdup(rpath(ctx, oldpath)); + int err, serrno; - err = rename(tmp, rpath(ctx, newpath)); - if (err == -1) { - int serrno = errno; - qemu_free(tmp); - errno = serrno; + if (ctx->fs_sm == SM_PASSTHROUGH) { + err = passthrough_request(ctx, oldpath, newpath, 0, NULL, T_RENAME); + if (err == -1) { + serrno = errno; + } } else { + char *tmp; + tmp = qemu_strdup(rpath(ctx, oldpath)); + err = rename(tmp, rpath(ctx, newpath)); + if (err == -1) { + serrno = errno; + } qemu_free(tmp); } - + if (err == -1) { + errno = serrno; + } return err; - } static int local_chown(FsContext *fs_ctx, const char *path, FsCred *credp) -- 1.7.3.4