From d37e481acb8708025039f05b5ba412390c38aa7d Mon Sep 17 00:00:00 2001
From: Martinez <overwatch@covalent.cz>
Date: Sat, 26 Dec 2015 22:33:19 +0100
Subject: [PATCH] add a warning when running dangerously old Linux kernels

---
 libexec/render.py | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/libexec/render.py b/libexec/render.py
index 6e4941e..65a6b4d 100755
--- a/libexec/render.py
+++ b/libexec/render.py
@@ -38,6 +38,8 @@ COLOR_GIT_STAGED = 10
 COLOR_PROMPT_OK = 14
 COLOR_PROMPT_ERROR = 1
 
+COLOR_ERROR = 196
+
 MOUNT_IGNORE_FS = ["iso9660", "tmpfs"]
 MOUNT_IGNORE_DIR = ["/dev", "/proc", "/sys"]
 
@@ -430,25 +432,33 @@ class StatsPart(Part):
 		swap_total = 0
 		swap_free = 0
 		
+		# MemAvailable is not available on <linux-3.14 and we'll bitch about that
+		old_linux = True
+		
 		with open("/proc/meminfo") as f:
 			for line in f:
 				if line.startswith("MemTotal"):
 					mem_total = int(line.split()[1]) * 1024
-				elif line.startswith("MemFree"): # MemAvailable is not available on some systems, but folllows MemFree
-					mem_free = int(line.split()[1]) * 1024
 				elif line.startswith("MemAvailable"):
 					mem_free = int(line.split()[1]) * 1024
+					old_linux = False
 				elif line.startswith("SwapTotal"):
 					swap_total = int(line.split()[1]) * 1024
 				elif line.startswith("SwapFree"):
 					swap_free = int(line.split()[1]) * 1024
 		
-		self.fragments.append(style_color(COLOR_MEMSWAP))
-		self.fragments.append("m")
-		self.fragments.append(style_bold())
-		self.fragments.append(style_color(settings.get_space_color(mem_free, mem_total)))
-		mem_free_si = si_number(mem_free)
-		self.fragments.append(space_string(mem_free) %(mem_free_si[0], mem_free_si[1]))
+		if old_linux or True:
+			self.fragments.append(style_color(COLOR_ERROR))
+			self.fragments.append(style_bold())
+			self.fragments.append("❌ <linux-3.14 ❌")
+		else:
+			self.fragments.append(style_color(COLOR_MEMSWAP))
+			self.fragments.append("m")
+			self.fragments.append(style_bold())
+			self.fragments.append(style_color(settings.get_space_color(mem_free, mem_total)))
+			mem_free_si = si_number(mem_free)
+			self.fragments.append(space_string(mem_free) %(mem_free_si[0], mem_free_si[1]))
+		
 		self.fragments.append(style_reset())
 		
 		if swap_total - swap_free > 2**20: