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glibc-compatibility: Add eventfd(), eventfd_read(), eventfd_write() from musl 1.2.1.

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This commit is contained in:
Vitaly Baranov 2020-11-14 07:04:03 +03:00
parent be056a93ab
commit d949898890
1 changed files with 23 additions and 0 deletions
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23
base/glibc-compatibility/musl/eventfd.c Normal file
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#include <sys/eventfd.h>
#include <unistd.h>
#include <errno.h>
#include "syscall.h"
int eventfd(unsigned int count, int flags)
{
int r = __syscall(SYS_eventfd2, count, flags);
#ifdef SYS_eventfd
if (r==-ENOSYS && !flags) r = __syscall(SYS_eventfd, count);
#endif
return __syscall_ret(r);
}
int eventfd_read(int fd, eventfd_t *value)
{
return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
}
int eventfd_write(int fd, eventfd_t value)
{
return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
}