diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-05-18 15:42:42 -0700 |
|---|---|---|
| committer | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-08-08 23:42:57 +0530 |
| commit | dcb9dbe3c701068aacadebcb4068b23b3d495f3a (patch) | |
| tree | dd67d3d8c88101b467658ac0f2696e1a2b8500de | |
| parent | 7a5ca31eb4cceff0191a45963c3d25260be73347 (diff) | |
hw/9pfs: Add yield support for readdir related coroutines
This include readdir, telldir, seekdir, rewinddir.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
| -rw-r--r-- | Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/9pfs/codir.c | 66 | ||||
| -rw-r--r-- | hw/9pfs/virtio-9p-coth.h | 5 |
3 files changed, 72 insertions, 1 deletions
diff --git a/Makefile.objs b/Makefile.objs index a534c1cff8..faa2a12528 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -305,7 +305,7 @@ hw-obj-$(CONFIG_SOUND) += $(sound-obj-y) 9pfs-nested-$(CONFIG_VIRTFS) = virtio-9p.o virtio-9p-debug.o 9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-local.o virtio-9p-xattr.o 9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-xattr-user.o virtio-9p-posix-acl.o -9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o +9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o codir.o hw-obj-$(CONFIG_REALLY_VIRTFS) += $(addprefix 9pfs/, $(9pfs-nested-y)) $(addprefix 9pfs/, $(9pfs-nested-y)): QEMU_CFLAGS+=$(GLIB_CFLAGS) diff --git a/hw/9pfs/codir.c b/hw/9pfs/codir.c new file mode 100644 index 0000000000..47b10df57d --- /dev/null +++ b/hw/9pfs/codir.c @@ -0,0 +1,66 @@ + +/* + * Virtio 9p backend + * + * Copyright IBM, Corp. 2011 + * + * Authors: + * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + */ + +#include "fsdev/qemu-fsdev.h" +#include "qemu-thread.h" +#include "qemu-coroutine.h" +#include "virtio-9p-coth.h" + +int v9fs_co_readdir(V9fsState *s, V9fsFidState *fidp, struct dirent **dent) +{ + int err; + + v9fs_co_run_in_worker( + { + errno = 0; + /*FIXME!! need to switch to readdir_r */ + *dent = s->ops->readdir(&s->ctx, fidp->fs.dir); + if (!*dent && errno) { + err = -errno; + } else { + err = 0; + } + }); + return err; +} + +off_t v9fs_co_telldir(V9fsState *s, V9fsFidState *fidp) +{ + off_t err; + + v9fs_co_run_in_worker( + { + err = s->ops->telldir(&s->ctx, fidp->fs.dir); + if (err < 0) { + err = -errno; + } + }); + return err; +} + +void v9fs_co_seekdir(V9fsState *s, V9fsFidState *fidp, off_t offset) +{ + v9fs_co_run_in_worker( + { + s->ops->seekdir(&s->ctx, fidp->fs.dir, offset); + }); +} + +void v9fs_co_rewinddir(V9fsState *s, V9fsFidState *fidp) +{ + v9fs_co_run_in_worker( + { + s->ops->rewinddir(&s->ctx, fidp->fs.dir); + }); +} diff --git a/hw/9pfs/virtio-9p-coth.h b/hw/9pfs/virtio-9p-coth.h index 94c5147683..9aa5953a0e 100644 --- a/hw/9pfs/virtio-9p-coth.h +++ b/hw/9pfs/virtio-9p-coth.h @@ -57,4 +57,9 @@ typedef struct V9fsThPool { extern void co_run_in_worker_bh(void *); extern int v9fs_init_worker_threads(void); extern int v9fs_co_readlink(V9fsState *, V9fsString *, V9fsString *); +extern int v9fs_co_readdir(V9fsState *, V9fsFidState *, + struct dirent **); +extern off_t v9fs_co_telldir(V9fsState *, V9fsFidState *); +extern void v9fs_co_seekdir(V9fsState *, V9fsFidState *, off_t); +extern void v9fs_co_rewinddir(V9fsState *, V9fsFidState *); #endif |