kaguya
46 lines
769 B
C++
46 lines
769 B
C++
#include <sys/eventfd.h>
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#include <errno.h>
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#include <bits/ensure.h>
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#include <mlibc/linux-sysdeps.hpp>
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int eventfd(unsigned int initval, int flags) {
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int fd = 0;
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MLIBC_CHECK_OR_ENOSYS(mlibc::sys_eventfd_create, -1);
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if (int e = mlibc::sys_eventfd_create(initval, flags, &fd); e) {
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errno = e;
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return -1;
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}
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return fd;
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}
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int eventfd_read(int fd, eventfd_t *value) {
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ssize_t bytes_read;
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if (int e = mlibc::sys_read(fd, value, 8, &bytes_read); e) {
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errno = e;
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return -1;
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}
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if (bytes_read != 8) {
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return -1;
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}
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return 0;
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}
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int eventfd_write(int fd, eventfd_t value) {
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ssize_t bytes_written;
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if (int e = mlibc::sys_write(fd, &value, 8, &bytes_written); e) {
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errno = e;
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return -1;
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}
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if (bytes_written != 8) {
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return -1;
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}
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return 0;
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}
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