11
void create_file(const char *path, const char *buffer, int mode) {
12
int fd = open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
15
int err = write(fd, buffer, sizeof(char) * strlen(buffer));
16
assert(err == (sizeof(char) * strlen(buffer)));
22
create_file("file", "abcdef", 0777);
24
create_file("dir/file", "abcdef", 0777);
25
mkdir("dir/subdir", 0777);
26
mkdir("dir-readonly", 0555);
27
mkdir("dir-nonempty", 0777);
28
create_file("dir-nonempty/file", "abcdef", 0777);
32
// we're hulk-smashing and removing original + renamed files to
33
// make sure we get it all regardless of anything failing
42
rmdir("dir-readonly");
43
unlink("dir-nonempty/file");
44
rmdir("dir-nonempty");
50
// can't rename something that doesn't exist
51
err = rename("noexist", "dir");
53
assert(errno == ENOENT);
55
// can't overwrite a folder with a file
56
err = rename("file", "dir");
58
assert(errno == EISDIR);
60
// can't overwrite a file with a folder
61
err = rename("dir", "file");
63
assert(errno == ENOTDIR);
65
// can't overwrite a non-empty folder
66
err = rename("dir", "dir-nonempty");
68
assert(errno == ENOTEMPTY);
70
// can't create anything in a read-only directory
71
err = rename("dir", "dir-readonly/dir");
73
assert(errno == EACCES);
75
// source should not be ancestor of target
76
err = rename("dir", "dir/somename");
78
assert(errno == EINVAL);
80
// target should not be an ancestor of source
81
err = rename("dir/subdir", "dir");
83
assert(errno == ENOTEMPTY);
85
// do some valid renaming
86
err = rename("dir/file", "dir/file1");
88
err = rename("dir/file1", "dir/file2");
90
err = access("dir/file2", F_OK);
92
err = rename("dir/subdir", "dir/subdir1");
94
err = rename("dir/subdir1", "dir/subdir2");
96
err = access("dir/subdir2", F_OK);
104
signal(SIGABRT, cleanup);