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/*
* Copyright 2021 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 <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
// FIXME: Merge with other existing close and open tests.
int main() {
// Test writing to a file with a trailing slash.
int fd = open("/dev/stdout/", O_WRONLY);
dprintf(fd, "WORKING WITH TRAILING BACKSLASH\n");
// Close open file
close(fd);
// Test writing to a file with no trailing backslash.
int fd2 = open("/dev/stdout", O_WRONLY);
dprintf(fd2, "WORKING WITHOUT TRAILING BACKSLASH\n");
// Check that the file type is correct on mode.
struct stat file;
fstat(fd2, &file);
assert((file.st_mode & S_IFMT) == S_IFCHR);
// The JS file system assigns S_IWUGO | S_IRUGO | S_IFCHR to devices.
#ifdef WASMFS
assert(file.st_mode == (S_IWUGO | S_IFCHR));
#else
assert(file.st_mode == (S_IWUGO | S_IRUGO | S_IFCHR));
#endif
// Close open file
close(fd2);
// Attempt to write to a non-existent fd.
errno = 0;
dprintf(fd, "SHOULD NOT PRINT\n");
assert(errno == EBADF);
printf("Errno: %s\n", strerror(errno));
// Attempt to open and then read/write to a directory.
int fd3 = open("/dev", O_RDONLY | O_DIRECTORY);
// Check that the file type is correct on mode.
struct stat dir;
fstat(fd3, &dir);
assert((dir.st_mode & S_IFMT) == S_IFDIR);
// The JS file system assigns write access to /dev.
#ifdef WASMFS
assert(dir.st_mode == (S_IRUGO | S_IXUGO | S_IFDIR));
#else
assert(dir.st_mode == (S_IWUGO | S_IRUGO | S_IXUGO | S_IFDIR));
#endif
const char* msg = "Test\n";
errno = 0;
write(fd3, msg, strlen(msg));
// TODO: Change to assert(errno == EBADF) when access mode checking is added.
char buf[100];
errno = 0;
read(fd3, buf, sizeof(buf));
assert(errno == EISDIR);
printf("Errno: %s\n", strerror(errno));
errno = 0;
// Attempt to open a non-existent file path.
int fd4 = open("/foo", O_RDWR);
printf("Errno: %s\n", strerror(errno));
assert(errno == ENOENT);
errno = 0;
// Attempt to open a file path with a file intermediary.
int fd5 = open("/dev/stdout/foo", O_RDWR);
printf("Errno: %s\n", strerror(errno));
// Both errors are valid, but in WasmFS, ENOTDIR is returned first.
#ifdef WASMFS
assert(errno == ENOTDIR);
#else
assert(errno == ENOENT);
#endif
errno = 0;
// Attempt to open and write to the root directory.
int fd6 = open("/", O_RDONLY);
write(fd6, msg, strlen(msg));
printf("Errno: %s\n", strerror(errno));
// In Linux and WasmFS one can obtain a fd to a directory.
#ifdef WASMFS
assert(errno == EISDIR);
#else
assert(errno == EBADF);
#endif
errno = 0;
// Attempt to open a blank path.
int fd7 = open("", O_RDONLY);
assert(errno == ENOENT);
return 0;
}
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