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#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
static 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() {
create_file("file", "test", 0777);
create_file("file1", "test", 0777);
symlink("file1", "file1-link");
mkdir("dir-empty", 0777);
symlink("dir-empty", "dir-empty-link");
mkdir("dir-readonly", 0777);
create_file("dir-readonly/anotherfile", "test", 0777);
mkdir("dir-readonly/anotherdir", 0777);
chmod("dir-readonly", 0555);
mkdir("dir-full", 0777);
create_file("dir-full/anotherfile", "test", 0777);
}
void cleanup() {
unlink("file");
unlink("file1");
unlink("file1-link");
rmdir("dir-empty");
unlink("dir-empty-link");
chmod("dir-readonly", 0777);
unlink("dir-readonly/anotherfile");
rmdir("dir-readonly/anotherdir");
rmdir("dir-readonly");
unlink("dir-full/anotherfile");
rmdir("dir-full");
}
void test() {
int err;
char buffer[512];
//
// test unlink
//
err = unlink("noexist");
assert(err == -1);
assert(errno == ENOENT);
err = unlink("dir-readonly");
assert(err == -1);
#ifdef __linux__
assert(errno == EISDIR);
#else
assert(errno == EPERM);
#endif
err = unlink("dir-readonly/anotherfile");
assert(err == -1);
assert(errno == EACCES);
// try unlinking the symlink first to make sure
// we don't follow the link
err = unlink("file1-link");
assert(!err);
err = access("file1", F_OK);
assert(!err);
err = access("file1-link", F_OK);
assert(err == -1);
err = unlink("file");
assert(!err);
err = access("file", F_OK);
assert(err == -1);
//
// test rmdir
//
err = rmdir("noexist");
assert(err == -1);
assert(errno == ENOENT);
err = rmdir("file1");
assert(err == -1);
assert(errno == ENOTDIR);
err = rmdir("dir-readonly/anotherdir");
assert(err == -1);
assert(errno == EACCES);
err = rmdir("dir-full");
assert(err == -1);
assert(errno == ENOTEMPTY);
// test removing the cwd / root. The result isn't specified by
// POSIX, but Linux seems to set EBUSY in both cases.
#ifndef __APPLE__
getcwd(buffer, sizeof(buffer));
err = rmdir(buffer);
assert(err == -1);
assert(errno == EBUSY);
#endif
err = rmdir("/");
assert(err == -1);
#ifdef __APPLE__
assert(errno == EISDIR);
#else
assert(errno == EBUSY);
#endif
err = rmdir("dir-empty-link");
assert(err == -1);
assert(errno == ENOTDIR);
err = rmdir("dir-empty");
assert(!err);
err = access("dir-empty", F_OK);
assert(err == -1);
puts("success");
}
int main() {
atexit(cleanup);
signal(SIGABRT, cleanup);
setup();
test();
return EXIT_SUCCESS;
}
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