diff options
Diffstat (limited to 'fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/libraries/libc-uvwasi/libc_uvwasi_wrapper.c')
| -rw-r--r-- | fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/libraries/libc-uvwasi/libc_uvwasi_wrapper.c | 1150 |
1 files changed, 1150 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/libraries/libc-uvwasi/libc_uvwasi_wrapper.c b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/libraries/libc-uvwasi/libc_uvwasi_wrapper.c new file mode 100644 index 000000000..504ff7f93 --- /dev/null +++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/core/iwasm/libraries/libc-uvwasi/libc_uvwasi_wrapper.c @@ -0,0 +1,1150 @@ +/* + * Copyright (C) 2019 Intel Corporation. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception + */ + +#include "uvwasi.h" +#include "bh_platform.h" +#include "wasm_export.h" + +/* clang-format off */ +#define get_module_inst(exec_env) \ + wasm_runtime_get_module_inst(exec_env) + +#define validate_app_addr(offset, size) \ + wasm_runtime_validate_app_addr(module_inst, offset, size) + +#define validate_native_addr(addr, size) \ + wasm_runtime_validate_native_addr(module_inst, addr, size) + +#define addr_app_to_native(offset) \ + wasm_runtime_addr_app_to_native(module_inst, offset) + +#define addr_native_to_app(ptr) \ + wasm_runtime_addr_native_to_app(module_inst, ptr) + +#define module_malloc(size, p_native_addr) \ + wasm_runtime_module_malloc(module_inst, size, p_native_addr) + +#define module_free(offset) \ + wasm_runtime_module_free(module_inst, offset) +/* clang-format on */ + +#define wasi_errno_t uvwasi_errno_t +#define wasi_fd_t uvwasi_fd_t +#define wasi_clockid_t uvwasi_clockid_t +#define wasi_timestamp_t uvwasi_timestamp_t +#define wasi_filesize_t uvwasi_filesize_t +#define wasi_prestat_app_t uvwasi_prestat_app_t +#define wasi_filedelta_t uvwasi_filedelta_t +#define wasi_whence_t uvwasi_whence_t +#define wasi_fdflags_t uvwasi_fdflags_t +#define wasi_rights_t uvwasi_rights_t +#define wasi_advice_t uvwasi_advice_t +#define wasi_lookupflags_t uvwasi_lookupflags_t +#define wasi_preopentype_t uvwasi_preopentype_t +#define wasi_fdstat_t uvwasi_fdstat_t +#define wasi_oflags_t uvwasi_oflags_t +#define wasi_dircookie_t uvwasi_dircookie_t +#define wasi_filestat_t uvwasi_filestat_t +#define wasi_fstflags_t uvwasi_fstflags_t +#define wasi_subscription_t uvwasi_subscription_t +#define wasi_event_t uvwasi_event_t +#define wasi_exitcode_t uvwasi_exitcode_t +#define wasi_signal_t uvwasi_signal_t +#define wasi_riflags_t uvwasi_riflags_t +#define wasi_roflags_t uvwasi_roflags_t +#define wasi_siflags_t uvwasi_siflags_t +#define wasi_sdflags_t uvwasi_sdflags_t +#define wasi_iovec_t uvwasi_iovec_t +#define wasi_ciovec_t uvwasi_ciovec_t + +typedef struct wasi_prestat_app { + wasi_preopentype_t pr_type; + uint32 pr_name_len; +} wasi_prestat_app_t; + +typedef struct iovec_app { + uint32 buf_offset; + uint32 buf_len; +} iovec_app_t; + +typedef struct WASIContext { + uvwasi_t uvwasi; + uint32_t exit_code; +} WASIContext; + +void * +wasm_runtime_get_wasi_ctx(wasm_module_inst_t module_inst); + +static uvwasi_t * +get_wasi_ctx(wasm_module_inst_t module_inst) +{ + WASIContext *ctx = wasm_runtime_get_wasi_ctx(module_inst); + if (ctx == NULL) { + return NULL; + } + return &ctx->uvwasi; +} + +static wasi_errno_t +wasi_args_get(wasm_exec_env_t exec_env, uint32 *argv_offsets, char *argv_buf) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_size_t argc, argv_buf_size, i; + char **argv; + uint64 total_size; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + err = uvwasi_args_sizes_get(uvwasi, &argc, &argv_buf_size); + if (err) + return err; + + total_size = sizeof(int32) * ((uint64)argc + 1); + if (total_size >= UINT32_MAX + || !validate_native_addr(argv_offsets, (uint32)total_size) + || argv_buf_size >= UINT32_MAX + || !validate_native_addr(argv_buf, (uint32)argv_buf_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(char *) * ((uint64)argc + 1); + if (total_size >= UINT32_MAX + || !(argv = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + err = uvwasi_args_get(uvwasi, argv, argv_buf); + if (err) { + wasm_runtime_free(argv); + return err; + } + + for (i = 0; i < argc; i++) + argv_offsets[i] = addr_native_to_app(argv[i]); + + wasm_runtime_free(argv); + return 0; +} + +static wasi_errno_t +wasi_args_sizes_get(wasm_exec_env_t exec_env, uint32 *argc_app, + uint32 *argv_buf_size_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_size_t argc, argv_buf_size; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(argc_app, sizeof(uint32)) + || !validate_native_addr(argv_buf_size_app, sizeof(uint32))) + return (wasi_errno_t)-1; + + err = uvwasi_args_sizes_get(uvwasi, &argc, &argv_buf_size); + if (err) + return err; + + *argc_app = (uint32)argc; + *argv_buf_size_app = (uint32)argv_buf_size; + return 0; +} + +static wasi_errno_t +wasi_clock_res_get(wasm_exec_env_t exec_env, wasi_clockid_t clock_id, + wasi_timestamp_t *resolution) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!validate_native_addr(resolution, sizeof(wasi_timestamp_t))) + return (wasi_errno_t)-1; + + return uvwasi_clock_res_get(uvwasi, clock_id, resolution); +} + +static wasi_errno_t +wasi_clock_time_get(wasm_exec_env_t exec_env, wasi_clockid_t clock_id, + wasi_timestamp_t precision, wasi_timestamp_t *time) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!validate_native_addr(time, sizeof(wasi_timestamp_t))) + return (wasi_errno_t)-1; + + return uvwasi_clock_time_get(uvwasi, clock_id, precision, time); +} + +static wasi_errno_t +wasi_environ_get(wasm_exec_env_t exec_env, uint32 *environ_offsets, + char *environ_buf) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_size_t environ_count, environ_buf_size, i; + uint64 total_size; + char **environs; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + err = uvwasi_environ_sizes_get(uvwasi, &environ_count, &environ_buf_size); + if (err) + return err; + + if (environ_count == 0) + return 0; + + total_size = sizeof(int32) * ((uint64)environ_count + 1); + if (total_size >= UINT32_MAX + || !validate_native_addr(environ_offsets, (uint32)total_size) + || environ_buf_size >= UINT32_MAX + || !validate_native_addr(environ_buf, (uint32)environ_buf_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(char *) * (((uint64)environ_count + 1)); + + if (total_size >= UINT32_MAX + || !(environs = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + err = uvwasi_environ_get(uvwasi, environs, environ_buf); + if (err) { + wasm_runtime_free(environs); + return err; + } + + for (i = 0; i < environ_count; i++) + environ_offsets[i] = addr_native_to_app(environs[i]); + + wasm_runtime_free(environs); + return 0; +} + +static wasi_errno_t +wasi_environ_sizes_get(wasm_exec_env_t exec_env, uint32 *environ_count_app, + uint32 *environ_buf_size_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_size_t environ_count, environ_buf_size; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(environ_count_app, sizeof(uint32)) + || !validate_native_addr(environ_buf_size_app, sizeof(uint32))) + return (wasi_errno_t)-1; + + err = uvwasi_environ_sizes_get(uvwasi, &environ_count, &environ_buf_size); + if (err) + return err; + + *environ_count_app = (uint32)environ_count; + *environ_buf_size_app = (uint32)environ_buf_size; + return 0; +} + +static wasi_errno_t +wasi_fd_prestat_get(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_prestat_app_t *prestat_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_prestat_t prestat; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(prestat_app, sizeof(wasi_prestat_app_t))) + return (wasi_errno_t)-1; + + err = uvwasi_fd_prestat_get(uvwasi, fd, &prestat); + if (err) + return err; + + prestat_app->pr_type = prestat.pr_type; + prestat_app->pr_name_len = (uint32)prestat.u.dir.pr_name_len; + return 0; +} + +static wasi_errno_t +wasi_fd_prestat_dir_name(wasm_exec_env_t exec_env, wasi_fd_t fd, char *path, + uint32 path_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_prestat_dir_name(uvwasi, fd, path, path_len); +} + +static wasi_errno_t +wasi_fd_close(wasm_exec_env_t exec_env, wasi_fd_t fd) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_close(uvwasi, fd); +} + +static wasi_errno_t +wasi_fd_datasync(wasm_exec_env_t exec_env, wasi_fd_t fd) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_datasync(uvwasi, fd); +} + +static wasi_errno_t +wasi_fd_pread(wasm_exec_env_t exec_env, wasi_fd_t fd, iovec_app_t *iovec_app, + uint32 iovs_len, wasi_filesize_t offset, uint32 *nread_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_iovec_t *iovec, *iovec_begin; + uint64 total_size; + uvwasi_size_t nread; + uint32 i; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + total_size = sizeof(iovec_app_t) * (uint64)iovs_len; + if (!validate_native_addr(nread_app, (uint32)sizeof(uint32)) + || total_size >= UINT32_MAX + || !validate_native_addr(iovec_app, (uint32)total_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(wasi_iovec_t) * (uint64)iovs_len; + if (total_size >= UINT32_MAX + || !(iovec_begin = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + iovec = iovec_begin; + for (i = 0; i < iovs_len; i++, iovec_app++, iovec++) { + if (!validate_app_addr(iovec_app->buf_offset, iovec_app->buf_len)) { + err = (wasi_errno_t)-1; + goto fail; + } + iovec->buf = (void *)addr_app_to_native(iovec_app->buf_offset); + iovec->buf_len = iovec_app->buf_len; + } + + err = uvwasi_fd_pread(uvwasi, fd, iovec_begin, iovs_len, offset, &nread); + if (err) + goto fail; + + *nread_app = (uint32)nread; + + /* success */ + err = 0; + +fail: + wasm_runtime_free(iovec_begin); + return err; +} + +static wasi_errno_t +wasi_fd_pwrite(wasm_exec_env_t exec_env, wasi_fd_t fd, + const iovec_app_t *iovec_app, uint32 iovs_len, + wasi_filesize_t offset, uint32 *nwritten_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_ciovec_t *ciovec, *ciovec_begin; + uint64 total_size; + uvwasi_size_t nwritten; + uint32 i; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + total_size = sizeof(iovec_app_t) * (uint64)iovs_len; + if (!validate_native_addr(nwritten_app, (uint32)sizeof(uint32)) + || total_size >= UINT32_MAX + || !validate_native_addr((void *)iovec_app, (uint32)total_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(wasi_ciovec_t) * (uint64)iovs_len; + if (total_size >= UINT32_MAX + || !(ciovec_begin = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + ciovec = ciovec_begin; + for (i = 0; i < iovs_len; i++, iovec_app++, ciovec++) { + if (!validate_app_addr(iovec_app->buf_offset, iovec_app->buf_len)) { + err = (wasi_errno_t)-1; + goto fail; + } + ciovec->buf = (char *)addr_app_to_native(iovec_app->buf_offset); + ciovec->buf_len = iovec_app->buf_len; + } + + err = + uvwasi_fd_pwrite(uvwasi, fd, ciovec_begin, iovs_len, offset, &nwritten); + if (err) + goto fail; + + *nwritten_app = (uint32)nwritten; + + /* success */ + err = 0; + +fail: + wasm_runtime_free(ciovec_begin); + return err; +} + +static wasi_errno_t +wasi_fd_read(wasm_exec_env_t exec_env, wasi_fd_t fd, + const iovec_app_t *iovec_app, uint32 iovs_len, uint32 *nread_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_iovec_t *iovec, *iovec_begin; + uint64 total_size; + uvwasi_size_t nread; + uint32 i; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + total_size = sizeof(iovec_app_t) * (uint64)iovs_len; + if (!validate_native_addr(nread_app, (uint32)sizeof(uint32)) + || total_size >= UINT32_MAX + || !validate_native_addr((void *)iovec_app, (uint32)total_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(wasi_iovec_t) * (uint64)iovs_len; + if (total_size >= UINT32_MAX + || !(iovec_begin = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + iovec = iovec_begin; + for (i = 0; i < iovs_len; i++, iovec_app++, iovec++) { + if (!validate_app_addr(iovec_app->buf_offset, iovec_app->buf_len)) { + err = (wasi_errno_t)-1; + goto fail; + } + iovec->buf = (void *)addr_app_to_native(iovec_app->buf_offset); + iovec->buf_len = iovec_app->buf_len; + } + + err = uvwasi_fd_read(uvwasi, fd, iovec_begin, iovs_len, &nread); + if (err) + goto fail; + + *nread_app = (uint32)nread; + + /* success */ + err = 0; + +fail: + wasm_runtime_free(iovec_begin); + return err; +} + +static wasi_errno_t +wasi_fd_renumber(wasm_exec_env_t exec_env, wasi_fd_t from, wasi_fd_t to) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_renumber(uvwasi, from, to); +} + +static wasi_errno_t +wasi_fd_seek(wasm_exec_env_t exec_env, wasi_fd_t fd, wasi_filedelta_t offset, + wasi_whence_t whence, wasi_filesize_t *newoffset) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(newoffset, sizeof(wasi_filesize_t))) + return (wasi_errno_t)-1; + + return uvwasi_fd_seek(uvwasi, fd, offset, whence, newoffset); +} + +static wasi_errno_t +wasi_fd_tell(wasm_exec_env_t exec_env, wasi_fd_t fd, wasi_filesize_t *newoffset) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(newoffset, sizeof(wasi_filesize_t))) + return (wasi_errno_t)-1; + + return uvwasi_fd_tell(uvwasi, fd, newoffset); +} + +static wasi_errno_t +wasi_fd_fdstat_get(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_fdstat_t *fdstat_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_fdstat_t fdstat; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(fdstat_app, sizeof(wasi_fdstat_t))) + return (wasi_errno_t)-1; + + err = uvwasi_fd_fdstat_get(uvwasi, fd, &fdstat); + if (err) + return err; + + memcpy(fdstat_app, &fdstat, sizeof(wasi_fdstat_t)); + return 0; +} + +static wasi_errno_t +wasi_fd_fdstat_set_flags(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_fdflags_t flags) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_fdstat_set_flags(uvwasi, fd, flags); +} + +static wasi_errno_t +wasi_fd_fdstat_set_rights(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_rights_t fs_rights_base, + wasi_rights_t fs_rights_inheriting) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_fdstat_set_rights(uvwasi, fd, fs_rights_base, + fs_rights_inheriting); +} + +static wasi_errno_t +wasi_fd_sync(wasm_exec_env_t exec_env, wasi_fd_t fd) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_sync(uvwasi, fd); +} + +static wasi_errno_t +wasi_fd_write(wasm_exec_env_t exec_env, wasi_fd_t fd, + const iovec_app_t *iovec_app, uint32 iovs_len, + uint32 *nwritten_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_ciovec_t *ciovec, *ciovec_begin; + uint64 total_size; + uvwasi_size_t nwritten; + uint32 i; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + total_size = sizeof(iovec_app_t) * (uint64)iovs_len; + if (!validate_native_addr(nwritten_app, (uint32)sizeof(uint32)) + || total_size >= UINT32_MAX + || !validate_native_addr((void *)iovec_app, (uint32)total_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(wasi_ciovec_t) * (uint64)iovs_len; + if (total_size >= UINT32_MAX + || !(ciovec_begin = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + ciovec = ciovec_begin; + for (i = 0; i < iovs_len; i++, iovec_app++, ciovec++) { + if (!validate_app_addr(iovec_app->buf_offset, iovec_app->buf_len)) { + err = (wasi_errno_t)-1; + goto fail; + } + ciovec->buf = (char *)addr_app_to_native(iovec_app->buf_offset); + ciovec->buf_len = iovec_app->buf_len; + } + +#ifndef BH_VPRINTF + err = uvwasi_fd_write(uvwasi, fd, ciovec_begin, iovs_len, &nwritten); +#else + /* redirect stdout/stderr output to BH_VPRINTF function */ + if (fd == 1 || fd == 2) { + int i; + const struct iovec *iov1 = (const struct iovec *)ciovec_begin; + + nwritten = 0; + for (i = 0; i < (int)iovs_len; i++, iov1++) { + if (iov1->iov_len > 0 && iov1->iov_base) { + char format[16]; + + /* make up format string "%.ns" */ + snprintf(format, sizeof(format), "%%.%ds", (int)iov1->iov_len); + nwritten += (uvwasi_size_t)os_printf(format, iov1->iov_base); + } + } + err = 0; + } + else { + err = uvwasi_fd_write(uvwasi, fd, ciovec_begin, iovs_len, &nwritten); + } +#endif /* end of BH_VPRINTF */ + + if (err) + goto fail; + + *nwritten_app = (uint32)nwritten; + + /* success */ + err = 0; + +fail: + wasm_runtime_free(ciovec_begin); + return err; +} + +static wasi_errno_t +wasi_fd_advise(wasm_exec_env_t exec_env, wasi_fd_t fd, wasi_filesize_t offset, + wasi_filesize_t len, wasi_advice_t advice) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_advise(uvwasi, fd, offset, len, advice); +} + +static wasi_errno_t +wasi_fd_allocate(wasm_exec_env_t exec_env, wasi_fd_t fd, wasi_filesize_t offset, + wasi_filesize_t len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_allocate(uvwasi, fd, offset, len); +} + +static wasi_errno_t +wasi_path_create_directory(wasm_exec_env_t exec_env, wasi_fd_t fd, + const char *path, uint32 path_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_path_create_directory(uvwasi, fd, path, path_len); +} + +static wasi_errno_t +wasi_path_link(wasm_exec_env_t exec_env, wasi_fd_t old_fd, + wasi_lookupflags_t old_flags, const char *old_path, + uint32 old_path_len, wasi_fd_t new_fd, const char *new_path, + uint32 new_path_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_path_link(uvwasi, old_fd, old_flags, old_path, old_path_len, + new_fd, new_path, new_path_len); +} + +static wasi_errno_t +wasi_path_open(wasm_exec_env_t exec_env, wasi_fd_t dirfd, + wasi_lookupflags_t dirflags, const char *path, uint32 path_len, + wasi_oflags_t oflags, wasi_rights_t fs_rights_base, + wasi_rights_t fs_rights_inheriting, wasi_fdflags_t fs_flags, + wasi_fd_t *fd_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_fd_t fd = (wasi_fd_t)-1; /* set fd_app -1 if path open failed */ + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(fd_app, sizeof(wasi_fd_t))) + return (wasi_errno_t)-1; + + err = uvwasi_path_open(uvwasi, dirfd, dirflags, path, path_len, oflags, + fs_rights_base, fs_rights_inheriting, fs_flags, &fd); + + *fd_app = fd; + return err; +} + +static wasi_errno_t +wasi_fd_readdir(wasm_exec_env_t exec_env, wasi_fd_t fd, void *buf, + uint32 buf_len, wasi_dircookie_t cookie, uint32 *bufused_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_size_t bufused; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(bufused_app, sizeof(uint32))) + return (wasi_errno_t)-1; + + err = uvwasi_fd_readdir(uvwasi, fd, buf, buf_len, cookie, &bufused); + if (err) + return err; + + *bufused_app = (uint32)bufused; + return 0; +} + +static wasi_errno_t +wasi_path_readlink(wasm_exec_env_t exec_env, wasi_fd_t fd, const char *path, + uint32 path_len, char *buf, uint32 buf_len, + uint32 *bufused_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_size_t bufused; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(bufused_app, sizeof(uint32))) + return (wasi_errno_t)-1; + + err = uvwasi_path_readlink(uvwasi, fd, path, path_len, buf, buf_len, + &bufused); + if (err) + return err; + + *bufused_app = (uint32)bufused; + return 0; +} + +static wasi_errno_t +wasi_path_rename(wasm_exec_env_t exec_env, wasi_fd_t old_fd, + const char *old_path, uint32 old_path_len, wasi_fd_t new_fd, + const char *new_path, uint32 new_path_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_path_rename(uvwasi, old_fd, old_path, old_path_len, new_fd, + new_path, new_path_len); +} + +static wasi_errno_t +wasi_fd_filestat_get(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_filestat_t *filestat) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(filestat, sizeof(wasi_filestat_t))) + return (wasi_errno_t)-1; + + return uvwasi_fd_filestat_get(uvwasi, fd, filestat); +} + +static wasi_errno_t +wasi_fd_filestat_set_times(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_timestamp_t st_atim, wasi_timestamp_t st_mtim, + wasi_fstflags_t fstflags) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_filestat_set_times(uvwasi, fd, st_atim, st_mtim, fstflags); +} + +static wasi_errno_t +wasi_fd_filestat_set_size(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_filesize_t st_size) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_fd_filestat_set_size(uvwasi, fd, st_size); +} + +static wasi_errno_t +wasi_path_filestat_get(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_lookupflags_t flags, const char *path, + uint32 path_len, wasi_filestat_t *filestat) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr(filestat, sizeof(wasi_filestat_t))) + return (wasi_errno_t)-1; + + return uvwasi_path_filestat_get(uvwasi, fd, flags, path, path_len, + filestat); +} + +static wasi_errno_t +wasi_path_filestat_set_times(wasm_exec_env_t exec_env, wasi_fd_t fd, + wasi_lookupflags_t flags, const char *path, + uint32 path_len, wasi_timestamp_t st_atim, + wasi_timestamp_t st_mtim, wasi_fstflags_t fstflags) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_path_filestat_set_times(uvwasi, fd, flags, path, path_len, + st_atim, st_mtim, fstflags); +} + +static wasi_errno_t +wasi_path_symlink(wasm_exec_env_t exec_env, const char *old_path, + uint32 old_path_len, wasi_fd_t fd, const char *new_path, + uint32 new_path_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_path_symlink(uvwasi, old_path, old_path_len, fd, new_path, + new_path_len); +} + +static wasi_errno_t +wasi_path_unlink_file(wasm_exec_env_t exec_env, wasi_fd_t fd, const char *path, + uint32 path_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_path_unlink_file(uvwasi, fd, path, path_len); +} + +static wasi_errno_t +wasi_path_remove_directory(wasm_exec_env_t exec_env, wasi_fd_t fd, + const char *path, uint32 path_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_path_remove_directory(uvwasi, fd, path, path_len); +} + +static wasi_errno_t +wasi_poll_oneoff(wasm_exec_env_t exec_env, const wasi_subscription_t *in, + wasi_event_t *out, uint32 nsubscriptions, uint32 *nevents_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + uvwasi_size_t nevents; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + if (!validate_native_addr((void *)in, sizeof(wasi_subscription_t)) + || !validate_native_addr(out, sizeof(wasi_event_t)) + || !validate_native_addr(nevents_app, sizeof(uint32))) + return (wasi_errno_t)-1; + + err = uvwasi_poll_oneoff(uvwasi, in, out, nsubscriptions, &nevents); + if (err) + return err; + + *nevents_app = (uint32)nevents; + return 0; +} + +static void +wasi_proc_exit(wasm_exec_env_t exec_env, wasi_exitcode_t rval) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + WASIContext *wasi_ctx = wasm_runtime_get_wasi_ctx(module_inst); + /* Here throwing exception is just to let wasm app exit, + the upper layer should clear the exception and return + as normal */ + wasm_runtime_set_exception(module_inst, "wasi proc exit"); + wasi_ctx->exit_code = rval; +} + +static wasi_errno_t +wasi_proc_raise(wasm_exec_env_t exec_env, wasi_signal_t sig) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + char buf[32]; + + snprintf(buf, sizeof(buf), "%s%d", "wasi proc raise ", sig); + wasm_runtime_set_exception(module_inst, buf); + return 0; +} + +static wasi_errno_t +wasi_random_get(wasm_exec_env_t exec_env, void *buf, uint32 buf_len) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + return uvwasi_random_get(uvwasi, buf, buf_len); +} + +static wasi_errno_t +wasi_sock_recv(wasm_exec_env_t exec_env, wasi_fd_t sock, iovec_app_t *ri_data, + uint32 ri_data_len, wasi_riflags_t ri_flags, + uint32 *ro_datalen_app, wasi_roflags_t *ro_flags) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_iovec_t *iovec, *iovec_begin; + uint64 total_size; + uvwasi_size_t ro_datalen; + uint32 i; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + total_size = sizeof(iovec_app_t) * (uint64)ri_data_len; + if (!validate_native_addr(ro_datalen_app, (uint32)sizeof(uint32)) + || !validate_native_addr(ro_flags, (uint32)sizeof(wasi_roflags_t)) + || total_size >= UINT32_MAX + || !validate_native_addr(ri_data, (uint32)total_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(wasi_iovec_t) * (uint64)ri_data_len; + if (total_size >= UINT32_MAX + || !(iovec_begin = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + iovec = iovec_begin; + for (i = 0; i < ri_data_len; i++, ri_data++, iovec++) { + if (!validate_app_addr(ri_data->buf_offset, ri_data->buf_len)) { + err = (wasi_errno_t)-1; + goto fail; + } + iovec->buf = (void *)addr_app_to_native(ri_data->buf_offset); + iovec->buf_len = ri_data->buf_len; + } + + err = uvwasi_sock_recv(uvwasi, sock, iovec_begin, ri_data_len, ri_flags, + &ro_datalen, ro_flags); + if (err) + goto fail; + + *(uint32 *)ro_datalen_app = (uint32)ro_datalen; + + /* success */ + err = 0; + +fail: + wasm_runtime_free(iovec_begin); + return err; +} + +static wasi_errno_t +wasi_sock_send(wasm_exec_env_t exec_env, wasi_fd_t sock, + const iovec_app_t *si_data, uint32 si_data_len, + wasi_siflags_t si_flags, uint32 *so_datalen_app) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + wasi_ciovec_t *ciovec, *ciovec_begin; + uint64 total_size; + uvwasi_size_t so_datalen; + uint32 i; + wasi_errno_t err; + + if (!uvwasi) + return (wasi_errno_t)-1; + + total_size = sizeof(iovec_app_t) * (uint64)si_data_len; + if (!validate_native_addr(so_datalen_app, sizeof(uint32)) + || total_size >= UINT32_MAX + || !validate_native_addr((void *)si_data, (uint32)total_size)) + return (wasi_errno_t)-1; + + total_size = sizeof(wasi_ciovec_t) * (uint64)si_data_len; + if (total_size >= UINT32_MAX + || !(ciovec_begin = wasm_runtime_malloc((uint32)total_size))) + return (wasi_errno_t)-1; + + ciovec = ciovec_begin; + for (i = 0; i < si_data_len; i++, si_data++, ciovec++) { + if (!validate_app_addr(si_data->buf_offset, si_data->buf_len)) { + err = (wasi_errno_t)-1; + goto fail; + } + ciovec->buf = (char *)addr_app_to_native(si_data->buf_offset); + ciovec->buf_len = si_data->buf_len; + } + + err = uvwasi_sock_send(uvwasi, sock, ciovec_begin, si_data_len, si_flags, + &so_datalen); + if (err) + goto fail; + + *so_datalen_app = (uint32)so_datalen; + + /* success */ + err = 0; + +fail: + wasm_runtime_free(ciovec_begin); + return err; +} + +static wasi_errno_t +wasi_sock_shutdown(wasm_exec_env_t exec_env, wasi_fd_t sock, wasi_sdflags_t how) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + if (!uvwasi) + return (wasi_errno_t)-1; + + return uvwasi_sock_shutdown(uvwasi, sock, how); +} + +static wasi_errno_t +wasi_sched_yield(wasm_exec_env_t exec_env) +{ + wasm_module_inst_t module_inst = get_module_inst(exec_env); + uvwasi_t *uvwasi = get_wasi_ctx(module_inst); + + return uvwasi_sched_yield(uvwasi); +} + +/* clang-format off */ +#define REG_NATIVE_FUNC(func_name, signature) \ + { #func_name, wasi_##func_name, signature, NULL } +/* clang-format on */ + +static NativeSymbol native_symbols_libc_wasi[] = { + REG_NATIVE_FUNC(args_get, "(**)i"), + REG_NATIVE_FUNC(args_sizes_get, "(**)i"), + REG_NATIVE_FUNC(clock_res_get, "(i*)i"), + REG_NATIVE_FUNC(clock_time_get, "(iI*)i"), + REG_NATIVE_FUNC(environ_get, "(**)i"), + REG_NATIVE_FUNC(environ_sizes_get, "(**)i"), + REG_NATIVE_FUNC(fd_prestat_get, "(i*)i"), + REG_NATIVE_FUNC(fd_prestat_dir_name, "(i*~)i"), + REG_NATIVE_FUNC(fd_close, "(i)i"), + REG_NATIVE_FUNC(fd_datasync, "(i)i"), + REG_NATIVE_FUNC(fd_pread, "(i*iI*)i"), + REG_NATIVE_FUNC(fd_pwrite, "(i*iI*)i"), + REG_NATIVE_FUNC(fd_read, "(i*i*)i"), + REG_NATIVE_FUNC(fd_renumber, "(ii)i"), + REG_NATIVE_FUNC(fd_seek, "(iIi*)i"), + REG_NATIVE_FUNC(fd_tell, "(i*)i"), + REG_NATIVE_FUNC(fd_fdstat_get, "(i*)i"), + REG_NATIVE_FUNC(fd_fdstat_set_flags, "(ii)i"), + REG_NATIVE_FUNC(fd_fdstat_set_rights, "(iII)i"), + REG_NATIVE_FUNC(fd_sync, "(i)i"), + REG_NATIVE_FUNC(fd_write, "(i*i*)i"), + REG_NATIVE_FUNC(fd_advise, "(iIIi)i"), + REG_NATIVE_FUNC(fd_allocate, "(iII)i"), + REG_NATIVE_FUNC(path_create_directory, "(i*~)i"), + REG_NATIVE_FUNC(path_link, "(ii*~i*~)i"), + REG_NATIVE_FUNC(path_open, "(ii*~iIIi*)i"), + REG_NATIVE_FUNC(fd_readdir, "(i*~I*)i"), + REG_NATIVE_FUNC(path_readlink, "(i*~*~*)i"), + REG_NATIVE_FUNC(path_rename, "(i*~i*~)i"), + REG_NATIVE_FUNC(fd_filestat_get, "(i*)i"), + REG_NATIVE_FUNC(fd_filestat_set_times, "(iIIi)i"), + REG_NATIVE_FUNC(fd_filestat_set_size, "(iI)i"), + REG_NATIVE_FUNC(path_filestat_get, "(ii*~*)i"), + REG_NATIVE_FUNC(path_filestat_set_times, "(ii*~IIi)i"), + REG_NATIVE_FUNC(path_symlink, "(*~i*~)i"), + REG_NATIVE_FUNC(path_unlink_file, "(i*~)i"), + REG_NATIVE_FUNC(path_remove_directory, "(i*~)i"), + REG_NATIVE_FUNC(poll_oneoff, "(**i*)i"), + REG_NATIVE_FUNC(proc_exit, "(i)"), + REG_NATIVE_FUNC(proc_raise, "(i)i"), + REG_NATIVE_FUNC(random_get, "(*~)i"), + REG_NATIVE_FUNC(sock_recv, "(i*ii**)i"), + REG_NATIVE_FUNC(sock_send, "(i*ii*)i"), + REG_NATIVE_FUNC(sock_shutdown, "(ii)i"), + REG_NATIVE_FUNC(sched_yield, "()i"), +}; + +uint32 +get_libc_wasi_export_apis(NativeSymbol **p_libc_wasi_apis) +{ + *p_libc_wasi_apis = native_symbols_libc_wasi; + return sizeof(native_symbols_libc_wasi) / sizeof(NativeSymbol); +} |