static int
connect_to_socket(const char *name)
{
struct sockaddr_un addr;
socklen_t size;
const char *runtime_dir;
int name_size, fd;
runtime_dir = getenv("XDG_RUNTIME_DIR");
if (!runtime_dir) {
fprintf(stderr,
"error: XDG_RUNTIME_DIR not set in the environment.\n");
/* to prevent programs reporting
* "failed to create display: Success" */
errno = ENOENT;
return -1;
}
if (name == NULL)
name = getenv("WAYLAND_DISPLAY");
if (name == NULL)
name = "wayland-0";
fd = wl_os_socket_cloexec(PF_LOCAL, SOCK_STREAM, 0);
if (fd < 0)
return -1;
memset(&addr, 0, sizeof addr);
addr.sun_family = AF_LOCAL;
name_size =
snprintf(addr.sun_path, sizeof addr.sun_path,
"%s/%s", runtime_dir, name) + 1;
assert(name_size > 0);
if (name_size > (int)sizeof addr.sun_path) {
fprintf(stderr,
"error: socket path \"%s/%s\" plus null terminator"
" exceeds 108 bytes\n", runtime_dir, name);
close(fd);
/* to prevent programs reporting
* "failed to add socket: Success" */
errno = ENAMETOOLONG;
return -1;
};
size = offsetof (struct sockaddr_un, sun_path) + name_size;
if (connect(fd, (struct sockaddr *) &addr, size) < 0) {
close(fd);
return -1;
}
return fd;
}
static void
do_os_wrappers_socket_cloexec(int n)
{
int fd;
int nr_fds;
nr_fds = count_open_fds();
/* simply create a socket that closes on exec */
fd = wl_os_socket_cloexec(PF_LOCAL, SOCK_STREAM, 0);
assert(fd >= 0);
/*
* Must have 2 calls if falling back, but must also allow
* falling back without a forced fallback.
*/
assert(wrapped_calls_socket > n);
exec_fd_leak_check(nr_fds);
}
