From 0d559034cddc4de88399baa6ac36e9e69b0d0309 Mon Sep 17 00:00:00 2001
From: Alexey Dokuchaev <danfe@FreeBSD.org>
Date: Sun, 8 Dec 2024 08:18:18 +0000
Subject: sysutils/bsdfan: print better error message when failing to start

On non-ThinkPad laptops, or when acpi_ibm(4) module is not loaded,
the program emits cryptic "bsdfan: Not enough permissions: No such
file or directory" error message.  Replace it with something more
meaningful and helpful.
---
 sysutils/bsdfan/files/patch-system.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 sysutils/bsdfan/files/patch-system.c

(limited to 'sysutils/bsdfan/files/patch-system.c')

diff --git a/sysutils/bsdfan/files/patch-system.c b/sysutils/bsdfan/files/patch-system.c
new file mode 100644
index 000000000000..746330371302
--- /dev/null
+++ b/sysutils/bsdfan/files/patch-system.c
@@ -0,0 +1,31 @@
+--- system.c.orig	2018-01-12 16:11:08 UTC
++++ system.c
+@@ -10,7 +10,7 @@
+ #include "system.h"
+ 
+ #define INVALID_MODE_ERROR "Invalid fan mode"
+-#define PERMISSION_ERROR "Not enough permissions"
++#define FAN_SYSCTL_NODE "dev.acpi_ibm.0.fan"
+ #define KELVIN_TO_CELSIUS(t) ((t-2732+5)/10)
+ 
+ static int idx_cur_level;
+@@ -30,8 +30,8 @@ setFan(int mode, const struct Level *levels)
+ 	case MANUAL:
+ 	case AUTO:
+ 		/*set fan in manual mode*/
+-		if (sysctlbyname("dev.acpi_ibm.0.fan",NULL,NULL,&mode,sizeof(int)) == -1)
+-			err(EX_NOPERM, PERMISSION_ERROR);
++		if (sysctlbyname(FAN_SYSCTL_NODE,NULL,NULL,&mode,sizeof(int)) == -1)
++			err(EX_NOPERM, FAN_SYSCTL_NODE);
+ 
+ 		if (mode == AUTO)
+ 			break;
+@@ -86,7 +86,7 @@ levelDown(const struct Level *levels)
+ }
+ 
+ int
+-getTemp()
++getTemp(void)
+ {
+ 	int temp[8]={0};
+ 	size_t len = 8*sizeof(int);
-- 
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