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feat(libkernel): implement readv and writev

This commit is contained in:
Hannah Lyons 2026-10-10 17:13:10 -04:00
parent c6ca798fe6
commit 63a4014236
2 changed files with 26 additions and 0 deletions
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10
core/libs/prx/libkernel/File/src/Stdio.cpp
View File

@ -1078,4 +1078,14 @@ int APS5_VABI fdatasync_nid_postfix(int fd) {
return PosixResult(sceKernelFdatasync(fd));
}
int64_t APS5_VABI readv_nid_postfix(int d, const KernelIovec* iov, int iovcnt) {
const auto result = sceKernelReadv(d, iov, iovcnt);
return result < 0 ? PosixFailure(static_cast<int>(result) & 0xffff) : result;
}
int64_t APS5_VABI writev_nid_postfix(int d, const KernelIovec* iov, int iovcnt) {
const auto result = sceKernelWritev(d, iov, iovcnt);
return result < 0 ? PosixFailure(static_cast<int>(result) & 0xffff) : result;
}
}

16
core/libs/tests/GuestFileVector.cpp
View File

@ -33,6 +33,9 @@ std::int64_t APS5_VABI sceKernelRead(int, void*, std::size_t);
std::int64_t APS5_VABI sceKernelPread(int, void*, std::size_t, std::int64_t);
int APS5_VABI sceKernelLseek(int, std::int64_t, int);
std::int64_t APS5_VABI sceKernelReadv(int, const GuestIovec*, int);
std::int64_t APS5_VABI readv_nid_postfix(int, const GuestIovec*, int);
std::int64_t APS5_VABI writev_nid_postfix(int, const GuestIovec*, int);
int* APS5_VABI __error_nid_postfix();
std::int64_t APS5_VABI sceKernelWritev(int, const GuestIovec*, int);
std::int64_t APS5_VABI sceKernelPreadv(int, const GuestIovec*, int, std::int64_t);
std::int64_t APS5_VABI sceKernelPwritev(int, const GuestIovec*, int, std::int64_t);
@ -81,6 +84,14 @@ int main() {
Require(sceKernelReadv(file, reads, 2) == 3);
Require(std::memcmp(first, "789", 3) == 0);
Require(sceKernelReadv(file, reads, 2) == 0);
Require(sceKernelLseek(file, 0, 0) == 0);
Require(readv_nid_postfix(file, reads, 2) == 7);
Require(std::memcmp(first, "012", 3) == 0 && std::memcmp(second, "3456", 4) == 0);
Require(sceKernelLseek(file, 0, 1) == 7);
Require(readv_nid_postfix(file, reads, 2) == 3);
Require(readv_nid_postfix(file, reads, 2) == 0);
Require(readv_nid_postfix(file, reads, -1) == -1 && *__error_nid_postfix() == 22);
Require(writev_nid_postfix(file, nullptr, 1) == -1 && *__error_nid_postfix() == 14);
Require(sceKernelPreadv(file, reads, 2, 1) == 7);
Require(std::memcmp(first, "123", 3) == 0 && std::memcmp(second, "4567", 4) == 0);
@ -98,6 +109,11 @@ int main() {
Require(sceKernelWritev(file, writes, 2) == 5);
Require(sceKernelLseek(file, 0, 1) == 13);
Require(Contents(path) == "01ABCDE7ABCDE");
GuestIovec swapped[2] = {{cde, 3}, {ab, 2}};
Require(sceKernelLseek(file, 8, 0) == 8 && writev_nid_postfix(file, swapped, 2) == 5);
Require(sceKernelLseek(file, 0, 1) == 13 && Contents(path) == "01ABCDE7CDEAB");
Require(sceKernelLseek(file, 8, 0) == 8 && writev_nid_postfix(file, writes, 2) == 5);
Require(Contents(path) == "01ABCDE7ABCDE");
GuestIovec gapped[3] = {{first, 2}, {nullptr, 0}, {second, 3}};
Require(sceKernelPreadv(file, gapped, 3, 0) == 5);