ssize_t qemu_write_full(int fd, const void *buf, size_t count)
QEMU_WARN_UNUSED_RESULT;
-ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags)
- QEMU_WARN_UNUSED_RESULT;
-ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
- QEMU_WARN_UNUSED_RESULT;
#ifndef _WIN32
int qemu_pipe(int pipefd[2]);
return qemu_signalfd_compat(mask);
}
-
-bool qemu_signalfd_available(void)
-{
-#ifdef CONFIG_SIGNALFD
- sigset_t mask;
- int fd;
- bool ok;
- sigemptyset(&mask);
- errno = 0;
- fd = syscall(SYS_signalfd, -1, &mask, _NSIG / 8);
- ok = (errno != ENOSYS);
- if (fd >= 0) {
- close(fd);
- }
- return ok;
-#else
- return false;
-#endif
-}
return ret;
}
-/*
- * A variant of send(2) which handles partial write.
- *
- * Return the number of bytes transferred, which is only
- * smaller than `count' if there is an error.
- *
- * This function won't work with non-blocking fd's.
- * Any of the possibilities with non-bloking fd's is bad:
- * - return a short write (then name is wrong)
- * - busy wait adding (errno == EAGAIN) to the loop
- */
-ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags)
-{
- ssize_t ret = 0;
- ssize_t total = 0;
-
- while (count) {
- ret = send(fd, buf, count, flags);
- if (ret < 0) {
- if (errno == EINTR) {
- continue;
- }
- break;
- }
-
- count -= ret;
- buf += ret;
- total += ret;
- }
-
- return total;
-}
-
-/*
- * A variant of recv(2) which handles partial write.
- *
- * Return the number of bytes transferred, which is only
- * smaller than `count' if there is an error.
- *
- * This function won't work with non-blocking fd's.
- * Any of the possibilities with non-bloking fd's is bad:
- * - return a short write (then name is wrong)
- * - busy wait adding (errno == EAGAIN) to the loop
- */
-ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
-{
- ssize_t ret = 0;
- ssize_t total = 0;
-
- while (count) {
- ret = qemu_recv(fd, buf, count, flags);
- if (ret <= 0) {
- if (ret < 0 && errno == EINTR) {
- continue;
- }
- break;
- }
-
- count -= ret;
- buf += ret;
- total += ret;
- }
-
- return total;
-}
-
void qemu_set_version(const char *version)
{
qemu_version = version;