Abstract POSIX filesystem functions (#2585)

To allow non-POSIX platforms such as Windows to support WASI libc
filesystem functionality, create a set of wrapper functions which provide a
platform-agnostic interface to interact with the host filesystem. For now,
the Windows implementation is stubbed but this will be implemented
properly in a future PR. There are no functional changes in this change,
just a reorganization of code to move any direct POSIX references out of
posix.c in the libc implementation into posix_file.c under the shared
POSIX sources.

See https://github.com/bytecodealliance/wasm-micro-runtime/issues/2495 for a
more detailed overview of the plan to port the WASI libc filesystem to Windows.
This commit is contained in:
zoraaver
2023-10-19 12:19:39 +01:00
committed by GitHub
parent 5fd530610a
commit fa5e9d72b0
40 changed files with 3805 additions and 2566 deletions

View File

@ -14,7 +14,6 @@
#include "../interpreter/wasm.h"
#if WASM_ENABLE_LIBC_WASI != 0
#if WASM_ENABLE_UVWASI == 0
#include "wasmtime_ssp.h"
#include "posix.h"
#else
#include "uvwasi.h"
@ -853,7 +852,7 @@ wasm_runtime_set_wasi_args_ex(WASMModuleCommon *module, const char *dir_list[],
uint32 dir_count, const char *map_dir_list[],
uint32 map_dir_count, const char *env_list[],
uint32 env_count, char *argv[], int argc,
int stdinfd, int stdoutfd, int stderrfd);
int64 stdinfd, int64 stdoutfd, int64 stderrfd);
/* See wasm_export.h for description */
WASM_RUNTIME_API_EXTERN void
@ -881,8 +880,9 @@ wasm_runtime_init_wasi(WASMModuleInstanceCommon *module_inst,
const char *env[], uint32 env_count,
const char *addr_pool[], uint32 addr_pool_size,
const char *ns_lookup_pool[], uint32 ns_lookup_pool_size,
char *argv[], uint32 argc, int stdinfd, int stdoutfd,
int stderrfd, char *error_buf, uint32 error_buf_size);
char *argv[], uint32 argc, os_raw_file_handle stdinfd,
os_raw_file_handle stdoutfd, os_raw_file_handle stderrfd,
char *error_buf, uint32 error_buf_size);
void
wasm_runtime_destroy_wasi(WASMModuleInstanceCommon *module_inst);