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6f56908427
To lower the entry level for new developers, add a link to the 9p developer docs (i.e. qemu wiki) to MAINTAINERS and to the beginning of 9p source files, that is to: https://wiki.qemu.org/Documentation/9p Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com> Acked-by: Greg Kurz <groug@kaod.org> Message-Id: <E1leeDf-0008GZ-9q@lizzy.crudebyte.com>
115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/*
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* 9p backend
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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/*
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* Not so fast! You might want to read the 9p developer docs first:
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* https://wiki.qemu.org/Documentation/9p
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*/
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#include "qemu/osdep.h"
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#include "fsdev/qemu-fsdev.h"
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#include "qemu/thread.h"
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#include "qemu/coroutine.h"
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#include "qemu/main-loop.h"
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#include "coth.h"
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int coroutine_fn v9fs_co_llistxattr(V9fsPDU *pdu, V9fsPath *path, void *value,
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size_t size)
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{
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int err;
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V9fsState *s = pdu->s;
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if (v9fs_request_cancelled(pdu)) {
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return -EINTR;
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}
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v9fs_path_read_lock(s);
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v9fs_co_run_in_worker(
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{
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err = s->ops->llistxattr(&s->ctx, path, value, size);
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if (err < 0) {
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err = -errno;
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}
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});
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v9fs_path_unlock(s);
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return err;
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}
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int coroutine_fn v9fs_co_lgetxattr(V9fsPDU *pdu, V9fsPath *path,
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V9fsString *xattr_name, void *value,
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size_t size)
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{
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int err;
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V9fsState *s = pdu->s;
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if (v9fs_request_cancelled(pdu)) {
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return -EINTR;
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}
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v9fs_path_read_lock(s);
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v9fs_co_run_in_worker(
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{
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err = s->ops->lgetxattr(&s->ctx, path,
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xattr_name->data,
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value, size);
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if (err < 0) {
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err = -errno;
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}
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});
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v9fs_path_unlock(s);
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return err;
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}
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int coroutine_fn v9fs_co_lsetxattr(V9fsPDU *pdu, V9fsPath *path,
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V9fsString *xattr_name, void *value,
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size_t size, int flags)
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{
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int err;
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V9fsState *s = pdu->s;
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if (v9fs_request_cancelled(pdu)) {
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return -EINTR;
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}
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v9fs_path_read_lock(s);
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v9fs_co_run_in_worker(
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{
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err = s->ops->lsetxattr(&s->ctx, path,
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xattr_name->data, value,
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size, flags);
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if (err < 0) {
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err = -errno;
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}
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});
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v9fs_path_unlock(s);
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return err;
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}
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int coroutine_fn v9fs_co_lremovexattr(V9fsPDU *pdu, V9fsPath *path,
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V9fsString *xattr_name)
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{
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int err;
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V9fsState *s = pdu->s;
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if (v9fs_request_cancelled(pdu)) {
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return -EINTR;
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}
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v9fs_path_read_lock(s);
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v9fs_co_run_in_worker(
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{
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err = s->ops->lremovexattr(&s->ctx, path, xattr_name->data);
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if (err < 0) {
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err = -errno;
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}
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});
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v9fs_path_unlock(s);
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return err;
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}
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