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error handling: Use RETRY_ON_EINTR() macro where applicable 

There is a defined RETRY_ON_EINTR() macro in qemu/osdep.h
which handles the same while loop.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/415
Signed-off-by: Nikita Ivanov <nivanov@cloudlinux.com>
Message-Id: <20221023090422.242617-3-nivanov@cloudlinux.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[thuth: Dropped the hunk that changed socket_accept() in libqtest.c]
Signed-off-by: Thomas Huth <thuth@redhat.com>
master
Nikita Ivanov 2022-10-23 12:04:22 +03:00 committed by Thomas Huth
parent 8b6aa69365
commit 37b0b24e93
13 changed files with 45 additions and 81 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
block/file-posix.c
View File

@ -1229,9 +1229,7 @@ static int hdev_get_max_segments(int fd, struct stat *st)
ret = -errno;
goto out;
}
do {
ret = read(sysfd, buf, sizeof(buf) - 1);
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(read(sysfd, buf, sizeof(buf) - 1));
if (ret < 0) {
ret = -errno;
goto out;
@ -1379,9 +1377,9 @@ static int handle_aiocb_ioctl(void *opaque)
RawPosixAIOData *aiocb = opaque;
int ret;
do {
ret = ioctl(aiocb->aio_fildes, aiocb->ioctl.cmd, aiocb->ioctl.buf);
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(
ioctl(aiocb->aio_fildes, aiocb->ioctl.cmd, aiocb->ioctl.buf)
);
if (ret == -1) {
return -errno;
}
@ -1463,18 +1461,17 @@ static ssize_t handle_aiocb_rw_vector(RawPosixAIOData *aiocb)
{
ssize_t len;
do {
if (aiocb->aio_type & QEMU_AIO_WRITE)
len = qemu_pwritev(aiocb->aio_fildes,
aiocb->io.iov,
aiocb->io.niov,
aiocb->aio_offset);
else
len = qemu_preadv(aiocb->aio_fildes,
aiocb->io.iov,
aiocb->io.niov,
aiocb->aio_offset);
} while (len == -1 && errno == EINTR);
len = RETRY_ON_EINTR(
(aiocb->aio_type & QEMU_AIO_WRITE) ?
qemu_pwritev(aiocb->aio_fildes,
aiocb->io.iov,
aiocb->io.niov,
aiocb->aio_offset) :
qemu_preadv(aiocb->aio_fildes,
aiocb->io.iov,
aiocb->io.niov,
aiocb->aio_offset)
);
if (len == -1) {
return -errno;
@ -1899,9 +1896,7 @@ static int allocate_first_block(int fd, size_t max_size)
buf = qemu_memalign(max_align, write_size);
memset(buf, 0, write_size);
do {
n = pwrite(fd, buf, write_size, 0);
} while (n == -1 && errno == EINTR);
n = RETRY_ON_EINTR(pwrite(fd, buf, write_size, 0));
ret = (n == -1) ? -errno : 0;

4
chardev/char-pty.c
View File

@ -93,9 +93,7 @@ static void pty_chr_update_read_handler(Chardev *chr)
pfd.fd = fioc->fd;
pfd.events = G_IO_OUT;
pfd.revents = 0;
do {
rc = g_poll(&pfd, 1, 0);
} while (rc == -1 && errno == EINTR);
rc = RETRY_ON_EINTR(g_poll(&pfd, 1, 0));
assert(rc >= 0);
if (pfd.revents & G_IO_HUP) {

8
hw/9pfs/9p-local.c
View File

@ -470,9 +470,7 @@ static ssize_t local_readlink(FsContext *fs_ctx, V9fsPath *fs_path,
if (fd == -1) {
return -1;
}
do {
tsize = read(fd, (void *)buf, bufsz);
} while (tsize == -1 && errno == EINTR);
tsize = RETRY_ON_EINTR(read(fd, (void *)buf, bufsz));
close_preserve_errno(fd);
} else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
(fs_ctx->export_flags & V9FS_SM_NONE)) {
@ -908,9 +906,7 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
}
/* Write the oldpath (target) to the file. */
oldpath_size = strlen(oldpath);
do {
write_size = write(fd, (void *)oldpath, oldpath_size);
} while (write_size == -1 && errno == EINTR);
write_size = RETRY_ON_EINTR(write(fd, (void *)oldpath, oldpath_size));
close_preserve_errno(fd);
if (write_size != oldpath_size) {

17
net/l2tpv3.c
View File

@ -240,9 +240,7 @@ static ssize_t net_l2tpv3_receive_dgram_iov(NetClientState *nc,
message.msg_control = NULL;
message.msg_controllen = 0;
message.msg_flags = 0;
do {
ret = sendmsg(s->fd, &message, 0);
} while ((ret == -1) && (errno == EINTR));
ret = RETRY_ON_EINTR(sendmsg(s->fd, &message, 0));
if (ret > 0) {
ret -= s->offset;
} else if (ret == 0) {
@ -285,9 +283,7 @@ static ssize_t net_l2tpv3_receive_dgram(NetClientState *nc,
message.msg_control = NULL;
message.msg_controllen = 0;
message.msg_flags = 0;
do {
ret = sendmsg(s->fd, &message, 0);
} while ((ret == -1) && (errno == EINTR));
ret = RETRY_ON_EINTR(sendmsg(s->fd, &message, 0));
if (ret > 0) {
ret -= s->offset;
} else if (ret == 0) {
@ -434,12 +430,9 @@ static void net_l2tpv3_send(void *opaque)
msgvec = s->msgvec + s->queue_head;
if (target_count > 0) {
do {
count = recvmmsg(
s->fd,
msgvec,
target_count, MSG_DONTWAIT, NULL);
} while ((count == -1) && (errno == EINTR));
count = RETRY_ON_EINTR(
recvmmsg(s->fd, msgvec, target_count, MSG_DONTWAIT, NULL)
);
if (count < 0) {
/* Recv error - we still need to flush packets here,
* (re)set queue head to current position

16
net/socket.c
View File

@ -117,15 +117,13 @@ static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf,
NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
ssize_t ret;
do {
if (s->dgram_dst.sin_family != AF_UNIX) {
ret = sendto(s->fd, buf, size, 0,
(struct sockaddr *)&s->dgram_dst,
sizeof(s->dgram_dst));
} else {
ret = send(s->fd, buf, size, 0);
}
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(
s->dgram_dst.sin_family != AF_UNIX ?
sendto(s->fd, buf, size, 0,
(struct sockaddr *)&s->dgram_dst,
sizeof(s->dgram_dst)) :
send(s->fd, buf, size, 0)
);
if (ret == -1 && errno == EAGAIN) {
net_socket_write_poll(s, true);

8
net/tap.c
View File

@ -102,9 +102,7 @@ static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt
{
ssize_t len;
do {
len = writev(s->fd, iov, iovcnt);
} while (len == -1 && errno == EINTR);
len = RETRY_ON_EINTR(writev(s->fd, iov, iovcnt));
if (len == -1 && errno == EAGAIN) {
tap_write_poll(s, true);
@ -577,9 +575,7 @@ static int net_bridge_run_helper(const char *helper, const char *bridge,
close(sv[1]);
do {
fd = recv_fd(sv[0]);
} while (fd == -1 && errno == EINTR);
fd = RETRY_ON_EINTR(recv_fd(sv[0]));
saved_errno = errno;
close(sv[0]);

4
qga/commands-posix.c
View File

@ -63,9 +63,7 @@ static void ga_wait_child(pid_t pid, int *status, Error **errp)
*status = 0;
do {
rpid = waitpid(pid, status, 0);
} while (rpid == -1 && errno == EINTR);
rpid = RETRY_ON_EINTR(waitpid(pid, status, 0));
if (rpid == -1) {
error_setg_errno(errp, errno, "failed to wait for child (pid: %d)",

4
semihosting/syscalls.c
View File

@ -317,9 +317,7 @@ static void host_read(CPUState *cs, gdb_syscall_complete_cb complete,
complete(cs, -1, EFAULT);
return;
}
do {
ret = read(gf->hostfd, ptr, len);
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(read(gf->hostfd, ptr, len));
if (ret == -1) {
complete(cs, -1, errno);
unlock_user(ptr, buf, 0);

4
tests/qtest/libqtest.c
View File

@ -689,9 +689,7 @@ int qtest_socket_server(const char *socket_path)
addr.sun_family = AF_UNIX;
snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socket_path);
do {
ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(bind(sock, (struct sockaddr *)&addr, sizeof(addr)));
g_assert_cmpint(ret, !=, -1);
ret = listen(sock, 1);
g_assert_cmpint(ret, !=, -1);

4
tests/vhost-user-bridge.c
View File

@ -331,9 +331,7 @@ vubr_backend_recv_cb(int sock, void *ctx)
.msg_iovlen = num,
.msg_flags = MSG_DONTWAIT,
};
do {
ret = recvmsg(vubr->backend_udp_sock, &msg, 0);
} while (ret == -1 && (errno == EINTR));
ret = RETRY_ON_EINTR(recvmsg(vubr->backend_udp_sock, &msg, 0));
if (i == 0) {
iov_restore_front(elem->in_sg, sg, hdrlen);

4
util/main-loop.c
View File

@ -64,9 +64,7 @@ static void sigfd_handler(void *opaque)
ssize_t len;
while (1) {
do {
len = read(fd, &info, sizeof(info));
} while (len == -1 && errno == EINTR);
len = RETRY_ON_EINTR(read(fd, &info, sizeof(info)));
if (len == -1 && errno == EAGAIN) {
break;

4
util/osdep.c
View File

@ -244,9 +244,7 @@ static int qemu_lock_fcntl(int fd, int64_t start, int64_t len, int fl_type)
.l_type = fl_type,
};
qemu_probe_lock_ops();
do {
ret = fcntl(fd, fcntl_op_setlk, &fl);
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(fcntl(fd, fcntl_op_setlk, &fl));
return ret == -1 ? -errno : 0;
}

12
util/vfio-helpers.c
View File

@ -240,9 +240,9 @@ static int qemu_vfio_pci_read_config(QEMUVFIOState *s, void *buf,
s->config_region_info.offset,
s->config_region_info.size);
assert(QEMU_IS_ALIGNED(s->config_region_info.offset + ofs, size));
do {
ret = pread(s->device, buf, size, s->config_region_info.offset + ofs);
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(
pread(s->device, buf, size, s->config_region_info.offset + ofs)
);
return ret == size ? 0 : -errno;
}
@ -254,9 +254,9 @@ static int qemu_vfio_pci_write_config(QEMUVFIOState *s, void *buf, int size, int
s->config_region_info.offset,
s->config_region_info.size);
assert(QEMU_IS_ALIGNED(s->config_region_info.offset + ofs, size));
do {
ret = pwrite(s->device, buf, size, s->config_region_info.offset + ofs);
} while (ret == -1 && errno == EINTR);
ret = RETRY_ON_EINTR(
pwrite(s->device, buf, size, s->config_region_info.offset + ofs)
);
return ret == size ? 0 : -errno;
}