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https://github.com/boykopovar/AnyPS5.git
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xXPBSXxandClaude Sonnet 5.5
84aa2349f8
fcntl on a guest socket handled F_GETFL and F_SETFL only and failed every other command with EINVAL, so libcurl's fcntl(fd, F_SETFD, FD_CLOEXEC) on a new socket failed (ProsperoRadio PPSA99001, traced by screamm on #4796). Record FD_CLOEXEC per socket descriptor: F_SETFD sets or clears it, F_GETFD reads it, SOCK_CLOEXEC sets it at creation, and dup, dup2 and close start without it, as FreeBSD's kern_fcntl and kern_dup do. Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
51 lines
2.2 KiB
C++
51 lines
2.2 KiB
C++
#include "prx/libc/include/general/VabiMacros.hpp"
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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extern "C" {
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int APS5_VABI socket_nid_postfix(int, int, int);
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int APS5_VABI close_nid_postfix(int);
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int APS5_VABI dup_nid_postfix(int);
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int APS5_VABI dup2_nid_postfix(int, int);
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int APS5_VABI fcntl_nid_postfix(int, int, ...);
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int* APS5_VABI __error_nid_postfix();
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}
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namespace {
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constexpr int GetDescriptorFlags = 1;
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constexpr int SetDescriptorFlags = 2;
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constexpr int CloseOnExec = 1;
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constexpr int Stream = 1;
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constexpr int SocketCloseOnExec = 0x10000000;
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void Require(bool condition, const char* what) {
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if (condition) return;
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std::fprintf(stderr, "%s (errno %d)\n", what, *__error_nid_postfix());
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std::abort();
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}
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}
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int main() {
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const int plain = socket_nid_postfix(2, Stream, 0);
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Require(plain >= 0, "socket failed");
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Require(fcntl_nid_postfix(plain, GetDescriptorFlags) == 0, "a new socket must not be close-on-exec (F_GETFD 0)");
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Require(fcntl_nid_postfix(plain, SetDescriptorFlags, CloseOnExec) == 0, "F_SETFD on a socket must succeed");
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Require(fcntl_nid_postfix(plain, GetDescriptorFlags) == CloseOnExec, "F_GETFD must read back FD_CLOEXEC");
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const int copy = dup_nid_postfix(plain);
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Require(copy >= 0 && fcntl_nid_postfix(copy, GetDescriptorFlags) == 0, "dup must clear FD_CLOEXEC on the copy");
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Require(fcntl_nid_postfix(plain, GetDescriptorFlags) == CloseOnExec, "dup must leave the flag of the original");
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Require(fcntl_nid_postfix(plain, SetDescriptorFlags, 0) == 0 && fcntl_nid_postfix(plain, GetDescriptorFlags) == 0, "F_SETFD 0 must clear FD_CLOEXEC");
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Require(close_nid_postfix(copy) == 0, "close failed");
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const int marked = socket_nid_postfix(2, Stream | SocketCloseOnExec, 0);
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Require(marked >= 0 && fcntl_nid_postfix(marked, GetDescriptorFlags) == CloseOnExec, "SOCK_CLOEXEC must set FD_CLOEXEC");
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Require(close_nid_postfix(marked) == 0, "close failed");
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const int reused = socket_nid_postfix(2, Stream, 0);
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Require(reused >= 0 && fcntl_nid_postfix(reused, GetDescriptorFlags) == 0, "the flag of a closed socket must not reach the next socket");
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Require(close_nid_postfix(reused) == 0 && close_nid_postfix(plain) == 0, "close failed");
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return 0;
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}
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