int uv_fs_readlink(uv_loop_t* loop, uv_fs_t* req, const char* path,
uv_fs_cb cb) {
ssize_t size;
int status;
char* buf;
status = -1;
uv_fs_req_init(loop, req, UV_FS_READLINK, path, cb);
if (cb) {
if ((req->eio = eio_readlink(path, EIO_PRI_DEFAULT, uv__fs_after, req))) {
uv_ref(loop);
return 0;
} else {
uv_err_new(loop, ENOMEM);
return -1;
}
} else {
/* pathconf(_PC_PATH_MAX) may return -1 to signify that path
* lengths have no upper limit or aren't suitable for malloc'ing.
*/
if ((size = pathconf(path, _PC_PATH_MAX)) == -1) {
#if defined(PATH_MAX)
size = PATH_MAX;
#else
size = 4096;
#endif
}
if ((buf = malloc(size + 1)) == NULL) {
uv_err_new(loop, ENOMEM);
return -1;
}
if ((size = readlink(path, buf, size)) == -1) {
req->errorno = errno;
req->result = -1;
free(buf);
} else {
/* Cannot conceivably fail since it shrinks the buffer. */
buf = realloc(buf, size + 1);
buf[size] = '\0';
req->result = 0;
req->ptr = buf;
}
return 0;
}
assert(0 && "unreachable");
}
void eio_test()
{
/* avoid relative paths yourself(!) */
printf("step: %d\n", eio_test_step);
int s = eio_test_step++;
switch(s) {
case 0:
eio_mkdir("/tmp/eio-test-dir", 0777, 0, res_cb, "mkdir");
break;
case 1: {
eio_nop(0, res_cb, "nop");
};
break;
case 2:
eio_stat("/tmp/eio-test-dir", 0, stat_cb, "stat");
break;
case 3:
eio_lstat("/tmp/eio-test-dir", 0, stat_cb, "stat");
break;
case 4:
eio_open("/tmp/eio-test-dir/eio-test-file", O_RDWR | O_CREAT, 0777, 0, open_cb, "open");
break;
case 5:
eio_symlink("test", "/tmp/eio-test-dir/eio-symlink", 0, res_cb, "symlink");
break;
case 6:
eio_mknod("/tmp/eio-test-dir/eio-fifo", S_IFIFO, 0, 0, res_cb, "mknod");
break;
case 7:
eio_utime("/tmp/eio-test-dir", 12345.678, 23456.789, 0, res_cb, "utime");
break;
case 8:
eio_futime(last_fd, 92345.678, 93456.789, 0, res_cb, "futime");
break;
case 9:
eio_chown("/tmp/eio-test-dir", getuid(), getgid(), 0, res_cb, "chown");
break;
case 10:
eio_fchown(last_fd, getuid(), getgid(), 0, res_cb, "fchown");
break;
case 11:
eio_fchmod(last_fd, 0723, 0, res_cb, "fchmod");
break;
case 12:
eio_readdir("/tmp/eio-test-dir", 0, 0, readdir_cb, "readdir");
break;
case 13:
eio_readdir("/nonexistant", 0, 0, readdir_cb, "readdir");
break;
case 14:
eio_fstat(last_fd, 0, stat_cb, "stat");
break;
case 15: {
eio_write(last_fd, "test\nfail\n", 10, 4, 0, res_cb, "write");
};
break;
case 16:
eio_read(last_fd, 0, 8, 0, EIO_PRI_DEFAULT, read_cb, "read");
break;
case 17:
eio_readlink("/tmp/eio-test-dir/eio-symlink", 0, res_cb, "readlink");
break;
case 18:
eio_dup2(1, 2, EIO_PRI_DEFAULT, res_cb, "dup");
break; // dup stdout to stderr
case 19:
eio_chmod("/tmp/eio-test-dir", 0765, 0, res_cb, "chmod");
break;
case 20:
eio_ftruncate(last_fd, 9, 0, res_cb, "ftruncate");
break;
case 21:
eio_fdatasync(last_fd, 0, res_cb, "fdatasync");
break;
case 22:
eio_fsync(last_fd, 0, res_cb, "fsync");
break;
case 23:
eio_sync(0, res_cb, "sync");
break;
case 24:
eio_busy(0.5, 0, res_cb, "busy");
break;
case 25:
eio_sendfile(1, last_fd, 4, 5, 0, res_cb, "sendfile");
break; // write "test\n" to stdout
case 26:
eio_fstat(last_fd, 0, stat_cb, "stat");
break;
case 27:
eio_truncate("/tmp/eio-test-dir/eio-test-file", 6, 0, res_cb, "truncate");
break;
case 28:
eio_readahead(last_fd, 0, 64, 0, res_cb, "readahead");
break;
case 29:
eio_close(last_fd, 0, res_cb, "close");
break;
case 30:
eio_link("/tmp/eio-test-dir/eio-test-file", "/tmp/eio-test-dir/eio-test-file-2", 0, res_cb, "link");
break;
case 31:
eio_rename("/tmp/eio-test-dir/eio-test-file", "/tmp/eio-test-dir/eio-test-file-renamed", 0, res_cb, "rename");
break;
case 32:
eio_unlink("/tmp/eio-test-dir/eio-fifo", 0, res_cb, "unlink");
break;
case 33:
eio_unlink("/tmp/eio-test-dir/eio-symlink", 0, res_cb, "unlink");
break;
case 34:
eio_unlink("/tmp/eio-test-dir/eio-test-file-2", 0, res_cb, "unlink");
break;
case 35:
eio_unlink("/tmp/eio-test-dir/eio-test-file-renamed", 0, res_cb, "unlink");
break;
case 36:
eio_rmdir("/tmp/eio-test-dir", 0, res_cb, "rmdir");
break;
}
}
int
main (void)
{
printf ("pipe ()\n");
if (pipe (respipe)) abort ();
printf ("eio_init ()\n");
if (eio_init (want_poll, done_poll)) abort ();
do
{
/* avoid relative paths yourself(!) */
eio_mkdir ("eio-test-dir", 0777, 0, res_cb, "mkdir");
eio_nop (0, res_cb, "nop");
event_loop ();
eio_stat ("eio-test-dir", 0, stat_cb, "stat");
eio_lstat ("eio-test-dir", 0, stat_cb, "stat");
eio_open ("eio-test-dir/eio-test-file", O_RDWR | O_CREAT, 0777, 0, open_cb, "open");
eio_symlink ("test", "eio-test-dir/eio-symlink", 0, res_cb, "symlink");
eio_mknod ("eio-test-dir/eio-fifo", S_IFIFO, 0, 0, res_cb, "mknod");
event_loop ();
eio_utime ("eio-test-dir", 12345.678, 23456.789, 0, res_cb, "utime");
eio_futime (last_fd, 92345.678, 93456.789, 0, res_cb, "futime");
eio_chown ("eio-test-dir", getuid (), getgid (), 0, res_cb, "chown");
eio_fchown (last_fd, getuid (), getgid (), 0, res_cb, "fchown");
eio_fchmod (last_fd, 0723, 0, res_cb, "fchmod");
eio_readdir ("eio-test-dir", 0, 0, readdir_cb, "readdir");
eio_readdir ("/nonexistant", 0, 0, readdir_cb, "readdir");
eio_fstat (last_fd, 0, stat_cb, "stat");
eio_write (last_fd, "test\nfail\n", 10, 4, 0, res_cb, "write");
event_loop ();
eio_read (last_fd, 0, 8, 0, EIO_PRI_DEFAULT, read_cb, "read");
eio_readlink ("eio-test-dir/eio-symlink", 0, res_cb, "readlink");
event_loop ();
eio_dup2 (1, 2, EIO_PRI_DEFAULT, res_cb, "dup"); // dup stdout to stderr
eio_chmod ("eio-test-dir", 0765, 0, res_cb, "chmod");
eio_ftruncate (last_fd, 9, 0, res_cb, "ftruncate");
eio_fdatasync (last_fd, 0, res_cb, "fdatasync");
eio_fsync (last_fd, 0, res_cb, "fsync");
eio_sync (0, res_cb, "sync");
eio_busy (0.5, 0, res_cb, "busy");
event_loop ();
eio_sendfile (1, last_fd, 4, 5, 0, res_cb, "sendfile"); // write "test\n" to stdout
eio_fstat (last_fd, 0, stat_cb, "stat");
event_loop ();
eio_truncate ("eio-test-dir/eio-test-file", 6, 0, res_cb, "truncate");
eio_readahead (last_fd, 0, 64, 0, res_cb, "readahead");
event_loop ();
eio_close (last_fd, 0, res_cb, "close");
eio_link ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-2", 0, res_cb, "link");
event_loop ();
eio_rename ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-renamed", 0, res_cb, "rename");
event_loop ();
eio_unlink ("eio-test-dir/eio-fifo", 0, res_cb, "unlink");
eio_unlink ("eio-test-dir/eio-symlink", 0, res_cb, "unlink");
eio_unlink ("eio-test-dir/eio-test-file-2", 0, res_cb, "unlink");
eio_unlink ("eio-test-dir/eio-test-file-renamed", 0, res_cb, "unlink");
event_loop ();
eio_rmdir ("eio-test-dir", 0, res_cb, "rmdir");
event_loop ();
}
while (0);
return 0;
}