diff options
| -rw-r--r-- | compat/simple-ipc/ipc-unix-socket.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/compat/simple-ipc/ipc-unix-socket.c b/compat/simple-ipc/ipc-unix-socket.c index 4e28857a0a..28a79289d4 100644 --- a/compat/simple-ipc/ipc-unix-socket.c +++ b/compat/simple-ipc/ipc-unix-socket.c @@ -35,6 +35,28 @@ enum ipc_active_state ipc_get_active_state(const char *path) } } +#ifdef __CYGWIN__ + /* + * Cygwin emulates Unix sockets by writing special-crafted files whose + * `system` bit is set. + * + * If we are too fast, Cygwin might still be in the process of marking + * the underlying file as a system file. Until then, we will not see a + * Unix socket here, but a plain file instead. Just in case that this + * is happening, wait a little and try again. + */ + { + static const int delay[] = { 1, 10, 20, 40, -1 }; + int i; + + for (i = 0; S_ISREG(st.st_mode) && delay[i] > 0; i++) { + sleep_millisec(delay[i]); + if (lstat(path, &st) == -1) + return IPC_STATE__INVALID_PATH; + } + } +#endif + /* also complain if a plain file is in the way */ if ((st.st_mode & S_IFMT) != S_IFSOCK) return IPC_STATE__INVALID_PATH; |