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2ec413b5a9
poll() and select() now delegate to ppoll() and pselect() for assurances
that both polyfill implementations are correct and well-tested. Poll now
polyfills XNU and BSD quirks re: the hanndling of POLLNVAL and the other
similar status flags. This change resolves a misunderstanding concerning
how select(exceptfds) is intended to map to POLPRI. We now use E2BIG for
bouncing requests that exceed the 64 handle limit on Windows. With pipes
and consoles on Windows our poll impl will now report POLLHUP correctly.
Issues with Windows path generation have been fixed. For example, it was
problematic on Windows to say: posix_spawn_file_actions_addchdir_np("/")
due to the need to un-UNC paths in some additional places. Calling fstat
on UNC style volume path handles will now work. posix_spawn now supports
simulating the opening of /dev/null and other special paths on Windows.
Cosmopolitan no longer defines epoll(). I think wepoll is a nice project
for using epoll() on Windows socket handles. However we need generalized
file descriptor support to make epoll() for Windows work well enough for
inclusion in a C library. It's also not worth having epoll() if we can't
get it to work on XNU and BSD OSes which provide different abstractions.
Even epoll() on Linux isn't that great of an abstraction since it's full
of footguns. Last time I tried to get it to be useful I had little luck.
Considering how long it took to get poll() and select() to be consistent
across platforms, we really have no business claiming to have epoll too.
While it'd be nice to have fully implemented, the only software that use
epoll() are event i/o libraries used by things like nodejs. Event i/o is
not the best paradigm for handling i/o; threads make so much more sense.
80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_SOCK_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_SOCK_INTERNAL_H_
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#include "libc/calls/struct/iovec.h"
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#include "libc/calls/struct/sigset.h"
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#include "libc/nt/struct/overlapped.h"
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#include "libc/nt/thunk/msabi.h"
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#include "libc/nt/winsock.h"
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#include "libc/sock/select.h"
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#include "libc/sock/sock.h"
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#include "libc/sock/struct/sockaddr.h"
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COSMOPOLITAN_C_START_
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#define kNtFdRead 1
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#define kNtFdWrite 2
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#define kNtFdOob 4
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#define kNtFdAccept 8
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#define kNtFdConnect 16
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#define kNtFdClose 32
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#define kNtFdQos 64
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#define kNtFdGroupQos 128
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#define kNtFdRoutingInterfaceChange 256
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#define kNtFdAddressListChange 512
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/* ------------------------------------------------------------------------------------*/
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#define SOCKFD_OVERLAP_BUFSIZ 128
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errno_t __dos2errno(uint32_t);
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int32_t __sys_accept(int32_t, void *, uint32_t *, int) __wur;
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int32_t __sys_accept4(int32_t, void *, uint32_t *, int) __wur;
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int32_t __sys_bind(int32_t, const void *, uint32_t);
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int32_t __sys_connect(int32_t, const void *, uint32_t);
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int32_t __sys_getpeername(int32_t, void *, uint32_t *);
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int32_t __sys_getsockname(int32_t, void *, uint32_t *);
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int32_t __sys_socket(int32_t, int32_t, int32_t);
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int32_t __sys_socketpair(int32_t, int32_t, int32_t, int32_t[2]);
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int32_t sys_accept4(int32_t, struct sockaddr_storage *, int) __wur;
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int32_t sys_bind(int32_t, const void *, uint32_t);
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int32_t sys_connect(int32_t, const void *, uint32_t);
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int32_t sys_getsockopt(int32_t, int32_t, int32_t, void *, uint32_t *);
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int32_t sys_listen(int32_t, int32_t);
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int32_t sys_getsockname(int32_t, void *, uint32_t *);
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int32_t sys_getpeername(int32_t, void *, uint32_t *);
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int32_t sys_shutdown(int32_t, int32_t);
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int32_t sys_socket(int32_t, int32_t, int32_t);
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int32_t sys_socketpair(int32_t, int32_t, int32_t, int32_t[2]);
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ssize_t sys_recvfrom(int, void *, size_t, int, void *, uint32_t *);
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ssize_t sys_sendto(int, const void *, size_t, int, const void *, uint32_t);
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int32_t sys_select(int32_t, fd_set *, fd_set *, fd_set *, struct timeval *);
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int sys_pselect(int, fd_set *, fd_set *, fd_set *, struct timespec *,
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const void *);
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int sys_setsockopt(int, int, int, const void *, uint32_t);
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int sys_socket_nt(int, int, int);
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/*
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int sys_socketpair_nt_stream(int, int, int, int[2]) ;
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int sys_socketpair_nt_dgram(int, int, int, int[2]) ;
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*/
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int sys_socketpair_nt(int, int, int, int[2]);
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int sys_select_nt(int, fd_set *, fd_set *, fd_set *, struct timeval *,
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const sigset_t *);
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size_t __iovec2nt(struct NtIovec[hasatleast 16], const struct iovec *, size_t);
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ssize_t __winsock_block(int64_t, uint32_t, bool, uint32_t, uint64_t,
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int (*)(int64_t, struct NtOverlapped *, uint32_t *,
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void *),
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void *);
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void WinSockInit(void);
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int64_t __winsockerr(void);
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int __fixupnewsockfd(int, int);
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int64_t GetNtBaseSocket(int64_t);
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int sys_close_epoll(int);
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_SOCK_INTERNAL_H_ */
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