mirror of https://gitee.com/openkylin/qemu.git
45 lines
984 B
C
45 lines
984 B
C
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/*
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* Virtio 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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#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 "virtio-9p-coth.h"
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int v9fs_co_readlink(V9fsState *s, V9fsString *path, V9fsString *buf)
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{
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int err;
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ssize_t len;
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buf->data = qemu_malloc(PATH_MAX);
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v9fs_co_run_in_worker(
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{
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len = s->ops->readlink(&s->ctx, path->data,
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buf->data, PATH_MAX - 1);
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if (len > -1) {
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buf->size = len;
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buf->data[len] = 0;
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err = 0;
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} else {
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err = -errno;
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}
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});
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if (err) {
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qemu_free(buf->data);
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buf->data = NULL;
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buf->size = 0;
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}
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return err;
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}
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