cosmopolitan/libc/sock/syscall_fd.internal.h
Justine Tunney 1d4eb08fa1
Support non-blocking i/o across platforms
This change introduces new tests for `O_NONBLOCK` and `SOCK_NONBLOCK` to
confirm that non-blocking i/o is now working on all supported platforms,
including Windows. For example, you can now say on Windows, MacOS, etc.:

    socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP);

To create a non-blocking IPv4 TCP socket. Or you can enable non-blocking
i/o on an existing socket / pipe / etc. file descriptor by calling fcntl

    fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);

This functionality is polyfilled on older Linux kernels too, e.g. RHEL5.
Now that fcntl() support is much better the FIOCLEX / FIONCLEX polyfills
for ioctl() have been removed since they're ugly non-POSIX diameond APIs

This change fixes a weakness in kprintf() that was causing Windows trace
tools to frequently crash.
2023-07-23 02:56:47 -07:00

27 lines
1.3 KiB
C

#ifndef COSMOPOLITAN_LIBC_SOCK_SYSCALL_INTERNAL_H_
#define COSMOPOLITAN_LIBC_SOCK_SYSCALL_INTERNAL_H_
#include "libc/calls/struct/fd.internal.h"
#include "libc/calls/struct/iovec.h"
#include "libc/nt/struct/overlapped.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
int sys_accept_nt(struct Fd *, void *, uint32_t *, int) _Hide;
int sys_bind_nt(struct Fd *, const void *, uint32_t);
int sys_closesocket_nt(struct Fd *) _Hide;
int sys_connect_nt(struct Fd *, const void *, uint32_t) _Hide;
int sys_getpeername_nt(struct Fd *, void *, uint32_t *) _Hide;
int sys_getsockname_nt(struct Fd *, void *, uint32_t *) _Hide;
int sys_getsockopt_nt(struct Fd *, int, int, void *, uint32_t *) _Hide;
int sys_listen_nt(struct Fd *, int) _Hide;
int sys_setsockopt_nt(struct Fd *, int, int, const void *, uint32_t) _Hide;
int sys_shutdown_nt(struct Fd *, int) _Hide;
ssize_t sys_recv_nt(struct Fd *, const struct iovec *, size_t, uint32_t) _Hide;
ssize_t sys_recvfrom_nt(struct Fd *, const struct iovec *, size_t, uint32_t,
void *, uint32_t *) _Hide;
int __wsablock(struct Fd *, struct NtOverlapped *, uint32_t *, bool,
uint32_t) _Hide;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_SOCK_SYSCALL_INTERNAL_H_ */