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#include <assert.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <utime.h>
#include <sys/stat.h>
#include <sys/types.h>
void create_file(const char *path, const char *buffer, int mode) {
int fd = open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
assert(fd >= 0);
int err = write(fd, buffer, sizeof(char) * strlen(buffer));
assert(err == (sizeof(char) * strlen(buffer)));
close(fd);
}
void setup() {
struct utimbuf t = {1200000000, 1200000000};
mkdir("folder", 0777);
create_file("folder/file", "abcdef", 0777);
symlink("file", "folder/file-link");
utime("folder/file", &t);
utime("folder", &t);
}
void cleanup() {
unlink("folder/file");
unlink("folder/file-link");
rmdir("folder");
}
void test() {
int err;
struct stat s;
// stat a folder
memset(&s, 0, sizeof(s));
err = stat("folder", &s);
assert(!err);
assert(s.st_dev);
assert(s.st_ino);
assert(S_ISDIR(s.st_mode));
assert(s.st_nlink);
assert(s.st_rdev == 0);
assert(s.st_size);
assert(s.st_atime == 1200000000);
assert(s.st_mtime == 1200000000);
assert(s.st_ctime);
#ifdef EMSCRIPTEN
assert(s.st_blksize == 4096);
assert(s.st_blocks == 1);
#endif
// stat a file
memset(&s, 0, sizeof(s));
err = stat("folder/file", &s);
assert(!err);
assert(s.st_dev);
assert(s.st_ino);
assert(S_ISREG(s.st_mode));
assert(s.st_nlink);
assert(s.st_rdev == 0);
assert(s.st_size == 6);
assert(s.st_atime == 1200000000);
assert(s.st_mtime == 1200000000);
assert(s.st_ctime);
#if EMSCRIPTEN
assert(s.st_blksize == 4096);
assert(s.st_blocks == 1);
#endif
// fstat a file (should match file stat from above)
memset(&s, 0, sizeof(s));
err = fstat(open("folder/file", O_RDONLY), &s);
assert(!err);
assert(s.st_dev);
assert(s.st_ino);
assert(S_ISREG(s.st_mode));
assert(s.st_nlink);
assert(s.st_rdev == 0);
assert(s.st_size == 6);
assert(s.st_atime == 1200000000);
assert(s.st_mtime == 1200000000);
assert(s.st_ctime);
#if EMSCRIPTEN
assert(s.st_blksize == 4096);
assert(s.st_blocks == 1);
#endif
// stat a device
memset(&s, 0, sizeof(s));
err = stat("/dev/null", &s);
assert(!err);
assert(s.st_dev);
assert(s.st_ino);
assert(S_ISCHR(s.st_mode));
assert(s.st_nlink);
#ifndef __APPLE__
// mac uses makedev(3, 2) for /dev/null
assert(s.st_rdev == makedev(1, 3));
#endif
assert(!s.st_size);
assert(s.st_atime);
assert(s.st_mtime);
assert(s.st_ctime);
#if EMSCRIPTEN
assert(s.st_blksize == 4096);
assert(s.st_blocks == 0);
#endif
// stat a link (should match the file stat from above)
memset(&s, 0, sizeof(s));
err = stat("folder/file-link", &s);
assert(!err);
assert(s.st_dev);
assert(s.st_ino);
assert(S_ISREG(s.st_mode));
assert(s.st_nlink);
assert(s.st_rdev == 0);
assert(s.st_size == 6);
assert(s.st_atime == 1200000000);
assert(s.st_mtime == 1200000000);
assert(s.st_ctime);
#if EMSCRIPTEN
assert(s.st_blksize == 4096);
assert(s.st_blocks == 1);
#endif
// lstat a link (should NOT match the file stat from above)
memset(&s, 0, sizeof(s));
err = lstat("folder/file-link", &s);
assert(!err);
assert(s.st_dev);
assert(s.st_ino);
assert(S_ISLNK(s.st_mode));
assert(s.st_nlink);
assert(s.st_rdev == 0);
assert(s.st_size == 4); // strlen("file")
assert(s.st_atime != 1200000000); // should NOT match the utime call we did for dir/file
assert(s.st_mtime != 1200000000);
assert(s.st_ctime);
#if EMSCRIPTEN
assert(s.st_blksize == 4096);
assert(s.st_blocks == 1);
#endif
puts("success");
}
int main() {
atexit(cleanup);
signal(SIGABRT, cleanup);
setup();
test();
return EXIT_SUCCESS;
}
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