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Refactoring: refactor TFR() macro to RETRY_ON_EINTR() 

Rename macro name to more transparent one and refactor
it to expression.

Signed-off-by: Nikita Ivanov <nivanov@cloudlinux.com>
Message-Id: <20221023090422.242617-2-nivanov@cloudlinux.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
master
Nikita Ivanov 2022-10-23 12:04:21 +03:00 committed by Thomas Huth
parent d88ce91299
commit 8b6aa69365
9 changed files with 24 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
chardev/char-fd.c
View File

@ -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);
}

8
chardev/char-pipe.c
View File

@ -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;

8
include/qemu/osdep.h
View File

@ -251,7 +251,13 @@ 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

6
net/tap-bsd.c
View File

@ -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;

2
net/tap-linux.c
View File

@ -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;

8
net/tap-solaris.c
View File

@ -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");

2
net/tap.c
View File

@ -650,7 +650,7 @@ 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;

2
os-posix.c
View File

@ -272,7 +272,7 @@ 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);
}

2
tests/qtest/libqtest.c
View File

@ -203,7 +203,7 @@ void qtest_wait_qemu(QTestState *s)
#ifndef _WIN32
pid_t pid;
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);
#else
DWORD ret;