diff options
| -rw-r--r-- | cutils.c | 19 | ||||
| -rw-r--r-- | qemu-common.h | 1 |
2 files changed, 20 insertions, 0 deletions
@@ -23,6 +23,7 @@ */ #include "qemu-common.h" #include "host-utils.h" +#include <assert.h> void pstrcpy(char *buf, int buf_size, const char *str) { @@ -112,8 +113,22 @@ void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint) qiov->size = 0; } +void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov) +{ + int i; + + qiov->iov = iov; + qiov->niov = niov; + qiov->nalloc = -1; + qiov->size = 0; + for (i = 0; i < niov; i++) + qiov->size += iov[i].iov_len; +} + void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len) { + assert(qiov->nalloc != -1); + if (qiov->niov == qiov->nalloc) { qiov->nalloc = 2 * qiov->nalloc + 1; qiov->iov = qemu_realloc(qiov->iov, qiov->nalloc * sizeof(struct iovec)); @@ -126,11 +141,15 @@ void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len) void qemu_iovec_destroy(QEMUIOVector *qiov) { + assert(qiov->nalloc != -1); + qemu_free(qiov->iov); } void qemu_iovec_reset(QEMUIOVector *qiov) { + assert(qiov->nalloc != -1); + qiov->niov = 0; qiov->size = 0; } diff --git a/qemu-common.h b/qemu-common.h index 28f47918dc..c10043db7b 100644 --- a/qemu-common.h +++ b/qemu-common.h @@ -194,6 +194,7 @@ typedef struct QEMUIOVector { } QEMUIOVector; void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint); +void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov); void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len); void qemu_iovec_destroy(QEMUIOVector *qiov); void qemu_iovec_reset(QEMUIOVector *qiov); |