swallow: rewrite patch, update README.md

patches/swallow/swallow-freebsd.patch

@@ -1,17 +1,17 @@
-From 49dc947ba4c33324b969ef7179768c806910fffb Mon Sep 17 00:00:00 2001
-From: choc <notchoc@proton.me>
-Date: Sat, 22 Jun 2024 10:52:33 +0800
-Subject: [PATCH] swallow: add freebsd support
+From 002e11e197cd254f06b65681ffd5bcf617d830b9 Mon Sep 17 00:00:00 2001
+From: Nikita Ivanov <nikita.vyach.ivanov@gmail.com>
+Date: Mon, 3 Mar 2025 19:49:07 +0100
+Subject: [PATCH] swallow: add FreeBSD support
 
 ---
  dwl.c | 17 +++++++++++++++++
  1 file changed, 17 insertions(+)
 
 diff --git a/dwl.c b/dwl.c
-index 3a3167b..ee9e965 100644
+index bbbbe6f..dc55319 100644
 --- a/dwl.c
 +++ b/dwl.c
-@@ -65,6 +65,14 @@
+@@ -67,6 +67,14 @@
  #include <xcb/xcb_icccm.h>
  #endif
  
@@ -26,17 +26,17 @@ index 3a3167b..ee9e965 100644
  #include "util.h"
  
  /* macros */
-@@ -1486,6 +1494,7 @@ handlesig(int signo)
+@@ -2032,6 +2040,7 @@ outputmgrtest(struct wl_listener *listener, void *data)
  pid_t
- getparentprocess(pid_t p)
+ parentpid(pid_t pid)
  {
 +#ifdef __linux__
  	unsigned int v = 0;
- 
  	FILE *f;
-@@ -1499,6 +1508,14 @@ getparentprocess(pid_t p)
+ 	char buf[256];
+@@ -2041,6 +2050,14 @@ parentpid(pid_t pid)
+ 	fscanf(f, "%*u %*s %*c %u", &v);
  	fclose(f);
- 
  	return (pid_t)v;
 +#elif defined(__FreeBSD__)
 +	struct kinfo_proc kip;
@@ -48,8 +48,7 @@ index 3a3167b..ee9e965 100644
 +#endif
  }
  
- int
+ void
 -- 
-2.43.0
-
+2.48.1