* [PATCH v4 1/2] Refactoring: refactor TFR() macro to RETRY_ON_EINTR()
2022-10-23 9:04 [PATCH v4 0/2] Refactoring: expand usage of TFR() macro Nikita Ivanov
@ 2022-10-23 9:04 ` Nikita Ivanov
2022-10-23 9:04 ` [PATCH v4 2/2] error handling: Use RETRY_ON_EINTR() macro where applicable Nikita Ivanov
2022-11-02 20:30 ` [PATCH v4 0/2] Refactoring: expand usage of TFR() macro Nikita Ivanov
2 siblings, 0 replies; 5+ messages in thread
From: Nikita Ivanov @ 2022-10-23 9:04 UTC (permalink / raw)
To: qemu-devel
Cc: Nikita Ivanov, Marc-André Lureau, Paolo Bonzini, Jason Wang,
Thomas Huth, Laurent Vivier
Rename macro name to more transparent one and refactor
it to expression.
Signed-off-by: Nikita Ivanov <nivanov@cloudlinux.com>
---
chardev/char-fd.c | 2 +-
chardev/char-pipe.c | 8 +++++---
include/qemu/osdep.h | 8 +++++++-
net/tap-bsd.c | 6 +++---
net/tap-linux.c | 2 +-
net/tap-solaris.c | 8 ++++----
net/tap.c | 2 +-
os-posix.c | 2 +-
tests/qtest/libqtest.c | 2 +-
9 files changed, 24 insertions(+), 16 deletions(-)
diff --git a/chardev/char-fd.c b/chardev/char-fd.c
index cf78454841..d2c4923359 100644
--- a/chardev/char-fd.c
+++ b/chardev/char-fd.c
@@ -198,7 +198,7 @@ int qmp_chardev_open_file_source(char *src, int flags, Error **errp)
{
int fd = -1;
- TFR(fd = qemu_open_old(src, flags, 0666));
+ fd = RETRY_ON_EINTR(qemu_open_old(src, flags, 0666));
if (fd == -1) {
error_setg_file_open(errp, errno, src);
}
diff --git a/chardev/char-pipe.c b/chardev/char-pipe.c
index 66d3b85091..5ad30bcc59 100644
--- a/chardev/char-pipe.c
+++ b/chardev/char-pipe.c
@@ -131,8 +131,8 @@ static void qemu_chr_open_pipe(Chardev *chr,
filename_in = g_strdup_printf("%s.in", filename);
filename_out = g_strdup_printf("%s.out", filename);
- TFR(fd_in = qemu_open_old(filename_in, O_RDWR | O_BINARY));
- TFR(fd_out = qemu_open_old(filename_out, O_RDWR | O_BINARY));
+ fd_in = RETRY_ON_EINTR(qemu_open_old(filename_in, O_RDWR | O_BINARY));
+ fd_out = RETRY_ON_EINTR(qemu_open_old(filename_out, O_RDWR | O_BINARY));
g_free(filename_in);
g_free(filename_out);
if (fd_in < 0 || fd_out < 0) {
@@ -142,7 +142,9 @@ static void qemu_chr_open_pipe(Chardev *chr,
if (fd_out >= 0) {
close(fd_out);
}
- TFR(fd_in = fd_out = qemu_open_old(filename, O_RDWR | O_BINARY));
+ fd_in = fd_out = RETRY_ON_EINTR(
+ qemu_open_old(filename, O_RDWR | O_BINARY)
+ );
if (fd_in < 0) {
error_setg_file_open(errp, errno, filename);
return;
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index b1c161c035..25c35b9a0e 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -243,7 +243,13 @@ void QEMU_ERROR("code path is reachable")
#define ESHUTDOWN 4099
#endif
-#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
+#define RETRY_ON_EINTR(expr) \
+ (__extension__ \
+ ({ typeof(expr) __result; \
+ do { \
+ __result = (expr); \
+ } while (__result == -1 && errno == EINTR); \
+ __result; }))
/* time_t may be either 32 or 64 bits depending on the host OS, and
* can be either signed or unsigned, so we can't just hardcode a
diff --git a/net/tap-bsd.c b/net/tap-bsd.c
index 005ce05c6e..4c98fdd337 100644
--- a/net/tap-bsd.c
+++ b/net/tap-bsd.c
@@ -56,7 +56,7 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
} else {
snprintf(dname, sizeof dname, "/dev/tap%d", i);
}
- TFR(fd = open(dname, O_RDWR));
+ fd = RETRY_ON_EINTR(open(dname, O_RDWR));
if (fd >= 0) {
break;
}
@@ -111,7 +111,7 @@ static int tap_open_clone(char *ifname, int ifname_size, Error **errp)
int fd, s, ret;
struct ifreq ifr;
- TFR(fd = open(PATH_NET_TAP, O_RDWR));
+ fd = RETRY_ON_EINTR(open(PATH_NET_TAP, O_RDWR));
if (fd < 0) {
error_setg_errno(errp, errno, "could not open %s", PATH_NET_TAP);
return -1;
@@ -159,7 +159,7 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
if (ifname[0] != '\0') {
char dname[100];
snprintf(dname, sizeof dname, "/dev/%s", ifname);
- TFR(fd = open(dname, O_RDWR));
+ fd = RETRY_ON_EINTR(open(dname, O_RDWR));
if (fd < 0 && errno != ENOENT) {
error_setg_errno(errp, errno, "could not open %s", dname);
return -1;
diff --git a/net/tap-linux.c b/net/tap-linux.c
index 304ff45071..f54f308d35 100644
--- a/net/tap-linux.c
+++ b/net/tap-linux.c
@@ -45,7 +45,7 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int len = sizeof(struct virtio_net_hdr);
unsigned int features;
- TFR(fd = open(PATH_NET_TUN, O_RDWR));
+ fd = RETRY_ON_EINTR(open(PATH_NET_TUN, O_RDWR));
if (fd < 0) {
error_setg_errno(errp, errno, "could not open %s", PATH_NET_TUN);
return -1;
diff --git a/net/tap-solaris.c b/net/tap-solaris.c
index a44f8805c2..38e15028bf 100644
--- a/net/tap-solaris.c
+++ b/net/tap-solaris.c
@@ -84,13 +84,13 @@ static int tap_alloc(char *dev, size_t dev_size, Error **errp)
if( ip_fd )
close(ip_fd);
- TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
+ ip_fd = RETRY_ON_EINTR(open("/dev/udp", O_RDWR, 0));
if (ip_fd < 0) {
error_setg(errp, "Can't open /dev/ip (actually /dev/udp)");
return -1;
}
- TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
+ tap_fd = RETRY_ON_EINTR(open("/dev/tap", O_RDWR, 0));
if (tap_fd < 0) {
error_setg(errp, "Can't open /dev/tap");
return -1;
@@ -104,7 +104,7 @@ static int tap_alloc(char *dev, size_t dev_size, Error **errp)
if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
error_report("Can't assign new interface");
- TFR(if_fd = open("/dev/tap", O_RDWR, 0));
+ if_fd = RETRY_ON_EINTR(open("/dev/tap", O_RDWR, 0));
if (if_fd < 0) {
error_setg(errp, "Can't open /dev/tap (2)");
return -1;
@@ -137,7 +137,7 @@ static int tap_alloc(char *dev, size_t dev_size, Error **errp)
if (ioctl (ip_fd, I_PUSH, "arp") < 0)
error_report("Can't push ARP module (3)");
/* Open arp_fd */
- TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
+ arp_fd = RETRY_ON_EINTR(open("/dev/tap", O_RDWR, 0));
if (arp_fd < 0)
error_report("Can't open %s", "/dev/tap");
diff --git a/net/tap.c b/net/tap.c
index e203d07a12..e090d14203 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -651,7 +651,7 @@ static int net_tap_init(const NetdevTapOptions *tap, int *vnet_hdr,
vnet_hdr_required = 0;
}
- TFR(fd = tap_open(ifname, ifname_sz, vnet_hdr, vnet_hdr_required,
+ fd = RETRY_ON_EINTR(tap_open(ifname, ifname_sz, vnet_hdr, vnet_hdr_required,
mq_required, errp));
if (fd < 0) {
return -1;
diff --git a/os-posix.c b/os-posix.c
index 321fc4bd13..bb27f67bac 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -266,7 +266,7 @@ void os_setup_post(void)
error_report("not able to chdir to /: %s", strerror(errno));
exit(1);
}
- TFR(fd = qemu_open_old("/dev/null", O_RDWR));
+ fd = RETRY_ON_EINTR(qemu_open_old("/dev/null", O_RDWR));
if (fd == -1) {
exit(1);
}
diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index b23eb3edc3..90648eb8d1 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -140,7 +140,7 @@ void qtest_kill_qemu(QTestState *s)
/* Skip wait if qtest_probe_child already reaped. */
if (pid != -1) {
kill(pid, SIGTERM);
- TFR(pid = waitpid(s->qemu_pid, &s->wstatus, 0));
+ pid = RETRY_ON_EINTR(waitpid(s->qemu_pid, &s->wstatus, 0));
assert(pid == s->qemu_pid);
s->qemu_pid = -1;
}
--
2.37.3
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH v4 2/2] error handling: Use RETRY_ON_EINTR() macro where applicable
2022-10-23 9:04 [PATCH v4 0/2] Refactoring: expand usage of TFR() macro Nikita Ivanov
2022-10-23 9:04 ` [PATCH v4 1/2] Refactoring: refactor TFR() macro to RETRY_ON_EINTR() Nikita Ivanov
@ 2022-10-23 9:04 ` Nikita Ivanov
2022-11-02 20:30 ` [PATCH v4 0/2] Refactoring: expand usage of TFR() macro Nikita Ivanov
2 siblings, 0 replies; 5+ messages in thread
From: Nikita Ivanov @ 2022-10-23 9:04 UTC (permalink / raw)
To: qemu-devel
Cc: Nikita Ivanov, Kevin Wolf, Hanna Reitz, Marc-André Lureau,
Paolo Bonzini, Greg Kurz, Christian Schoenebeck, Jason Wang,
Michael Roth, Konstantin Kostiuk, Alex Bennée, Thomas Huth,
Laurent Vivier, open list:raw
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>
---
block/file-posix.c | 37 ++++++++++++++++---------------------
chardev/char-pty.c | 4 +---
hw/9pfs/9p-local.c | 8 ++------
net/l2tpv3.c | 17 +++++------------
net/socket.c | 16 +++++++---------
net/tap.c | 8 ++------
qga/commands-posix.c | 4 +---
semihosting/syscalls.c | 4 +---
tests/qtest/libqtest.c | 12 +++++-------
tests/vhost-user-bridge.c | 4 +---
util/main-loop.c | 4 +---
util/osdep.c | 4 +---
util/vfio-helpers.c | 12 ++++++------
13 files changed, 49 insertions(+), 85 deletions(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index 23acffb9a4..8f7a22e3e4 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -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;
diff --git a/chardev/char-pty.c b/chardev/char-pty.c
index 53f25c6bbd..92fd33c854 100644
--- a/chardev/char-pty.c
+++ b/chardev/char-pty.c
@@ -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) {
diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index d42ce6d8b8..bb3187244f 100644
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -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) {
diff --git a/net/l2tpv3.c b/net/l2tpv3.c
index af373e5c30..e0726f5f89 100644
--- a/net/l2tpv3.c
+++ b/net/l2tpv3.c
@@ -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
diff --git a/net/socket.c b/net/socket.c
index bfd8596250..00f8a88531 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -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);
diff --git a/net/tap.c b/net/tap.c
index e090d14203..4c90f70b7e 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -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]);
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index eea819cff0..95753f7c96 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -68,9 +68,7 @@ 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)",
diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c
index 508a0ad88c..5893c760c5 100644
--- a/semihosting/syscalls.c
+++ b/semihosting/syscalls.c
@@ -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);
diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index 90648eb8d1..5abb29cb9e 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -101,10 +101,10 @@ static int socket_accept(int sock)
return -1;
}
- do {
- addrlen = sizeof(addr);
- ret = accept(sock, (struct sockaddr *)&addr, &addrlen);
- } while (ret == -1 && errno == EINTR);
+ ret = RETRY_ON_EINTR((
+ addrlen = sizeof(addr),
+ accept(sock, (struct sockaddr *)&addr, &addrlen)
+ ));
if (ret == -1) {
fprintf(stderr, "%s failed: %s\n", __func__, strerror(errno));
}
@@ -574,9 +574,7 @@ 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);
diff --git a/tests/vhost-user-bridge.c b/tests/vhost-user-bridge.c
index fecdf915e7..a5c711b1de 100644
--- a/tests/vhost-user-bridge.c
+++ b/tests/vhost-user-bridge.c
@@ -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);
diff --git a/util/main-loop.c b/util/main-loop.c
index f00a25451b..63bd5d123d 100644
--- a/util/main-loop.c
+++ b/util/main-loop.c
@@ -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;
diff --git a/util/osdep.c b/util/osdep.c
index 746d5f7d71..aa358bd65e 100644
--- a/util/osdep.c
+++ b/util/osdep.c
@@ -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;
}
diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index 5ba01177bf..1a9b338cf9 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -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;
}
--
2.37.3
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