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-rw-r--r--Makefile3
-rw-r--r--Makefile.objs4
-rw-r--r--block/qcow2.c6
-rw-r--r--block/qed.c4
-rw-r--r--cutils.c44
-rw-r--r--linux-aio.c4
-rw-r--r--posix-aio-compat.c8
-rw-r--r--qemu-common.h5
8 files changed, 20 insertions, 58 deletions
diff --git a/Makefile b/Makefile
index 9b7a85e4d2..017836bc02 100644
--- a/Makefile
+++ b/Makefile
@@ -154,7 +154,8 @@ qemu-img.o: qemu-img-cmds.h
qemu-img.o qemu-tool.o qemu-nbd.o qemu-io.o cmd.o qemu-ga.o: $(GENERATED_HEADERS)
tools-obj-y = $(oslib-obj-y) $(trace-obj-y) qemu-tool.o qemu-timer.o \
- qemu-timer-common.o main-loop.o notify.o iohandler.o cutils.o async.o
+ qemu-timer-common.o main-loop.o notify.o \
+ iohandler.o cutils.o iov.o async.o
tools-obj-$(CONFIG_POSIX) += compatfd.o
qemu-img$(EXESUF): qemu-img.o $(tools-obj-y) $(block-obj-y)
diff --git a/Makefile.objs b/Makefile.objs
index 70c5c79a6e..f173946fd2 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -42,7 +42,7 @@ coroutine-obj-$(CONFIG_WIN32) += coroutine-win32.o
#######################################################################
# block-obj-y is code used by both qemu system emulation and qemu-img
-block-obj-y = cutils.o cache-utils.o qemu-option.o module.o async.o
+block-obj-y = cutils.o iov.o cache-utils.o qemu-option.o module.o async.o
block-obj-y += nbd.o block.o aio.o aes.o qemu-config.o qemu-progress.o qemu-sockets.o
block-obj-y += $(coroutine-obj-y) $(qobject-obj-y) $(version-obj-y)
block-obj-$(CONFIG_POSIX) += posix-aio-compat.o
@@ -198,7 +198,7 @@ common-obj-$(CONFIG_XEN_BACKEND) += xen_console.o xenfb.o xen_disk.o xen_nic.o
user-obj-y =
user-obj-y += envlist.o path.o
user-obj-y += tcg-runtime.o host-utils.o
-user-obj-y += cutils.o cache-utils.o
+user-obj-y += cutils.o iov.o cache-utils.o
user-obj-y += module.o
user-obj-y += qemu-user.o
user-obj-y += $(trace-obj-y)
diff --git a/block/qcow2.c b/block/qcow2.c
index c2e49cded3..fcbf95273b 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -510,7 +510,7 @@ int qcow2_backing_read1(BlockDriverState *bs, QEMUIOVector *qiov,
else
n1 = bs->total_sectors - sector_num;
- qemu_iovec_memset_skip(qiov, 0, 512 * (nb_sectors - n1), 512 * n1);
+ qemu_iovec_memset(qiov, 512 * n1, 0, 512 * (nb_sectors - n1));
return n1;
}
@@ -571,7 +571,7 @@ static coroutine_fn int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num,
}
} else {
/* Note: in this case, no need to wait */
- qemu_iovec_memset(&hd_qiov, 0, 512 * cur_nr_sectors);
+ qemu_iovec_memset(&hd_qiov, 0, 0, 512 * cur_nr_sectors);
}
break;
@@ -580,7 +580,7 @@ static coroutine_fn int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num,
ret = -EIO;
goto fail;
}
- qemu_iovec_memset(&hd_qiov, 0, 512 * cur_nr_sectors);
+ qemu_iovec_memset(&hd_qiov, 0, 0, 512 * cur_nr_sectors);
break;
case QCOW2_CLUSTER_COMPRESSED:
diff --git a/block/qed.c b/block/qed.c
index 30a31f907f..40bdb5364a 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -736,7 +736,7 @@ static void qed_read_backing_file(BDRVQEDState *s, uint64_t pos,
/* Zero all sectors if reading beyond the end of the backing file */
if (pos >= backing_length ||
pos + qiov->size > backing_length) {
- qemu_iovec_memset(qiov, 0, qiov->size);
+ qemu_iovec_memset(qiov, 0, 0, qiov->size);
}
/* Complete now if there are no backing file sectors to read */
@@ -1251,7 +1251,7 @@ static void qed_aio_read_data(void *opaque, int ret,
/* Handle zero cluster and backing file reads */
if (ret == QED_CLUSTER_ZERO) {
- qemu_iovec_memset(&acb->cur_qiov, 0, acb->cur_qiov.size);
+ qemu_iovec_memset(&acb->cur_qiov, 0, 0, acb->cur_qiov.size);
qed_aio_next_io(acb, 0);
return;
} else if (ret != QED_CLUSTER_FOUND) {
diff --git a/cutils.c b/cutils.c
index af308cd7b9..0ddf4c7d74 100644
--- a/cutils.c
+++ b/cutils.c
@@ -26,6 +26,7 @@
#include <math.h>
#include "qemu_socket.h"
+#include "iov.h"
void pstrcpy(char *buf, int buf_size, const char *str)
{
@@ -260,47 +261,10 @@ void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count)
}
}
-void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count)
+size_t qemu_iovec_memset(QEMUIOVector *qiov, size_t offset,
+ int fillc, size_t bytes)
{
- size_t n;
- int i;
-
- for (i = 0; i < qiov->niov && count; ++i) {
- n = MIN(count, qiov->iov[i].iov_len);
- memset(qiov->iov[i].iov_base, c, n);
- count -= n;
- }
-}
-
-void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
- size_t skip)
-{
- int i;
- size_t done;
- void *iov_base;
- uint64_t iov_len;
-
- done = 0;
- for (i = 0; (i < qiov->niov) && (done != count); i++) {
- if (skip >= qiov->iov[i].iov_len) {
- /* Skip the whole iov */
- skip -= qiov->iov[i].iov_len;
- continue;
- } else {
- /* Skip only part (or nothing) of the iov */
- iov_base = (uint8_t*) qiov->iov[i].iov_base + skip;
- iov_len = qiov->iov[i].iov_len - skip;
- skip = 0;
- }
-
- if (done + iov_len > count) {
- memset(iov_base, c, count - done);
- break;
- } else {
- memset(iov_base, c, iov_len);
- }
- done += iov_len;
- }
+ return iov_memset(qiov->iov, qiov->niov, offset, fillc, bytes);
}
/*
diff --git a/linux-aio.c b/linux-aio.c
index fa0fbf34aa..ce9b5d4be8 100644
--- a/linux-aio.c
+++ b/linux-aio.c
@@ -63,8 +63,8 @@ static void qemu_laio_process_completion(struct qemu_laio_state *s,
} else if (ret >= 0) {
/* Short reads mean EOF, pad with zeros. */
if (laiocb->is_read) {
- qemu_iovec_memset_skip(laiocb->qiov, 0,
- laiocb->qiov->size - ret, ret);
+ qemu_iovec_memset(laiocb->qiov, ret, 0,
+ laiocb->qiov->size - ret);
} else {
ret = -EINVAL;
}
diff --git a/posix-aio-compat.c b/posix-aio-compat.c
index 68361f555a..96e4daf505 100644
--- a/posix-aio-compat.c
+++ b/posix-aio-compat.c
@@ -29,6 +29,7 @@
#include "qemu-common.h"
#include "trace.h"
#include "block_int.h"
+#include "iov.h"
#include "block/raw-posix-aio.h"
@@ -351,11 +352,8 @@ static void *aio_thread(void *unused)
if (ret >= 0 && ret < aiocb->aio_nbytes && aiocb->common.bs->growable) {
/* A short read means that we have reached EOF. Pad the buffer
* with zeros for bytes after EOF. */
- QEMUIOVector qiov;
-
- qemu_iovec_init_external(&qiov, aiocb->aio_iov,
- aiocb->aio_niov);
- qemu_iovec_memset_skip(&qiov, 0, aiocb->aio_nbytes - ret, ret);
+ iov_memset(aiocb->aio_iov, aiocb->aio_niov, ret,
+ 0, aiocb->aio_nbytes - ret);
ret = aiocb->aio_nbytes;
}
diff --git a/qemu-common.h b/qemu-common.h
index 91e056296d..e752d2b6c1 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -347,9 +347,8 @@ void qemu_iovec_destroy(QEMUIOVector *qiov);
void qemu_iovec_reset(QEMUIOVector *qiov);
void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
-void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
-void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
- size_t skip);
+size_t qemu_iovec_memset(QEMUIOVector *qiov, size_t offset,
+ int fillc, size_t bytes);
bool buffer_is_zero(const void *buf, size_t len);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-23 19:08:45 +0000