diff options
| author | Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com> | 2011-08-08 23:33:48 +0530 |
|---|---|---|
| committer | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-08-08 23:33:48 +0530 |
| commit | 86e42d748211e58beee431b2639e57ac01ffe3be (patch) | |
| tree | 41d7617a89452a50a69797839009c6cf17da6b42 | |
| parent | ff06030f660647bba1c60184dc32730fa06f38fe (diff) | |
hw/9pfs: Add yeild support for readlink
Signed-off-by: Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
| -rw-r--r-- | Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/9pfs/cofs.c | 44 | ||||
| -rw-r--r-- | hw/9pfs/virtio-9p-coth.h | 1 |
3 files changed, 46 insertions, 1 deletions
diff --git a/Makefile.objs b/Makefile.objs index 9bede6808b..a534c1cff8 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-$(CONFIG_VIRTFS) += virtio-9p-coth.o +9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.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/cofs.c b/hw/9pfs/cofs.c new file mode 100644 index 0000000000..6bb8b47da3 --- /dev/null +++ b/hw/9pfs/cofs.c @@ -0,0 +1,44 @@ + +/* + * 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_readlink(V9fsState *s, V9fsString *path, V9fsString *buf) +{ + int err; + ssize_t len; + + buf->data = qemu_malloc(PATH_MAX); + v9fs_co_run_in_worker( + { + len = s->ops->readlink(&s->ctx, path->data, + buf->data, PATH_MAX - 1); + if (len > -1) { + buf->size = len; + buf->data[len] = 0; + err = 0; + } else { + err = -errno; + } + }); + if (err) { + qemu_free(buf->data); + buf->data = NULL; + buf->size = 0; + } + return err; +} diff --git a/hw/9pfs/virtio-9p-coth.h b/hw/9pfs/virtio-9p-coth.h index 9388f9b8b0..94c5147683 100644 --- a/hw/9pfs/virtio-9p-coth.h +++ b/hw/9pfs/virtio-9p-coth.h @@ -56,4 +56,5 @@ 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 *); #endif |