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Fix crash when performing zero-length vectored file operations in libretro builds

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刘皓 2025-08-13 09:49:54 -04:00
parent 7b6f625e89
commit dc741f455f
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GPG key ID: 7901753DB465B711
1 changed files with 4 additions and 4 deletions
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8
binding-sandbox/wasi.cpp
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@ -546,7 +546,7 @@ extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_filestat_set_size(wasi_t *wa
extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_pread(wasi_t *wasi, uint32_t fd, wasm_ptr_t iovs, uint32_t iovs_len, uint64_t offset, wasm_ptr_t result) {
WASI_DEBUG("fd_pread(%u, 0x%08x (%u), %lu)\n", fd, iovs, iovs_len, offset);
if (8 * (wasm_size_t)iovs_len <= (wasm_size_t)iovs_len) {
if (8 * (wasm_size_t)iovs_len < (wasm_size_t)iovs_len) {
std::abort();
}
wasi->check_bounds(iovs, 8 * (wasm_size_t)iovs_len);
@ -610,7 +610,7 @@ extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_prestat_get(wasi_t *wasi, ui
extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_pwrite(wasi_t *wasi, uint32_t fd, wasm_ptr_t iovs, uint32_t iovs_len, uint64_t offset, wasm_ptr_t result) {
WASI_DEBUG("fd_pwrite(%u, 0x%08x (%u), %lu)\n", fd, iovs, iovs_len, offset);
if (8 * (wasm_size_t)iovs_len <= (wasm_size_t)iovs_len) {
if (8 * (wasm_size_t)iovs_len < (wasm_size_t)iovs_len) {
std::abort();
}
wasi->check_bounds(iovs, 8 * (wasm_size_t)iovs_len);
@ -621,7 +621,7 @@ extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_pwrite(wasi_t *wasi, uint32_
extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_read(wasi_t *wasi, uint32_t fd, wasm_ptr_t iovs, uint32_t iovs_len, wasm_ptr_t result) {
WASI_DEBUG("fd_read(%u, 0x%08x (%u))\n", fd, iovs, iovs_len);
if (8 * (wasm_size_t)iovs_len <= (wasm_size_t)iovs_len) {
if (8 * (wasm_size_t)iovs_len < (wasm_size_t)iovs_len) {
std::abort();
}
wasi->check_bounds(iovs, 8 * (wasm_size_t)iovs_len);
@ -874,7 +874,7 @@ extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_tell(wasi_t *wasi, uint32_t
extern "C" uint32_t w2c_wasi__snapshot__preview1_fd_write(wasi_t *wasi, uint32_t fd, wasm_ptr_t iovs, uint32_t iovs_len, wasm_ptr_t result) {
WASI_DEBUG("fd_write(%u, 0x%08x (%u))\n", fd, iovs, iovs_len);
if (8 * (wasm_size_t)iovs_len <= (wasm_size_t)iovs_len) {
if (8 * (wasm_size_t)iovs_len < (wasm_size_t)iovs_len) {
std::abort();
}
wasi->check_bounds(iovs, 8 * (wasm_size_t)iovs_len);