feat: ports - git port

dev-vcs/git/compat/poll.h

@@ -0,0 +1,37 @@
+/*
+ * <poll.h> for the MontaukOS git port.
+ *
+ * git polls only descriptors it created itself with pipe() -- the stdout and
+ * stderr of a spawned sub-process (run-command.c's pump loop, sideband
+ * demultiplexing). MontaukOS has neither pipe() nor fork(), so those code
+ * paths are unreachable at runtime; this header exists so they compile, and
+ * the implementation reports every descriptor ready so that a caller which
+ * somehow gets here makes progress into the read() that reports the real
+ * error, instead of spinning in the poll loop forever.
+ *
+ * git's own compat/poll (NO_POLL=1) is not used: it is written against
+ * select() and <sys/select.h>, neither of which exists here.
+ *
+ * Implementation in montauk-compat.c.
+ */
+#ifndef _MONTAUK_GIT_POLL_H_
+#define _MONTAUK_GIT_POLL_H_
+
+typedef unsigned long nfds_t;
+
+struct pollfd {
+	int   fd;
+	short events;
+	short revents;
+};
+
+#define POLLIN   0x001
+#define POLLPRI  0x002
+#define POLLOUT  0x004
+#define POLLERR  0x008
+#define POLLHUP  0x010
+#define POLLNVAL 0x020
+
+int poll(struct pollfd *fds, nfds_t nfds, int timeout);
+
+#endif /* _MONTAUK_GIT_POLL_H_ */