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/*
* Copyright 2022 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*/
#include <assert.h>
#include <emscripten/emscripten.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/uio.h>
#include <unistd.h>
int main() {
EM_ASM(
FS.writeFile('testfile', 'a=1\nb=2\n');
);
int fd = open("testfile", O_RDONLY);
assert(fd >= 0);
char buf0[16] = {0};
char buf1[16] = {0};
struct iovec iov[] = {{.iov_base = buf0, .iov_len = 4},
{.iov_base = buf1, .iov_len = 4}};
ssize_t nread = preadv(fd, iov, 2, 0);
assert(nread == 8);
assert(strcmp(buf0, "a=1\n") == 0);
assert(strcmp(buf1, "b=2\n") == 0);
close(fd);
printf("success\n");
return 0;
}
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