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stand/lua: Fix module_path handling with multiple kernels

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Once we've successfully loaded a kernel, we add its directory to
module_path. If we switch kernels with the kernel selector, we again prepend
the kernel directory to the current module_path and end up with multiple
kernel paths, potentially with mismatched kernel/modules, added to
module_path.

Fix it by caching module_path at load() time and using the cached version
whenever we load a new kernel.
This commit is contained in:
Kyle Evans 2018-02-18 00:56:12 +00:00
parent 7fc96e380a
commit 15d8e03c32
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=329497
1 changed files with 10 additions and 3 deletions
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13
stand/lua/config.lua
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@ -115,6 +115,7 @@ local pattern_table = {
[10] = {
str = "^%s*([%w%p]+)%s*=%s*\"([%w%s%p]-)\"%s*(.*)",
process = function(k, v)
print("Setting '"..k.."' to '"..v.."'")
if loader.setenv(k, v) ~= 0 then
print("Failed to set '"..k.."' with value: "..v.."");
end
@ -124,6 +125,7 @@ local pattern_table = {
[11] = {
str = "^%s*([%w%p]+)%s*=%s*(%d+)%s*(.*)",
process = function(k, v)
print("Setting '"..k.."' to '"..v.."'")
if loader.setenv(k, v) ~= 0 then
print("Failed to set '"..k.."' with value: "..v.."");
end
@ -293,7 +295,9 @@ function config.loadkernel(other_kernel)
return false;
end
else
local module_path = loader.getenv("module_path");
-- Use our cached module_path, so we don't end up with multiple
-- automatically added kernel paths to our final module_path
local module_path = config.module_path;
local res = nil;
if other_kernel ~= nil then
@ -308,9 +312,9 @@ function config.loadkernel(other_kernel)
loader.setenv("module_path", v);
res = load_bootfile();
-- succeeded add path to module_path
-- succeeded, add path to module_path
if res ~= nil then
if module_path ~= nil then
if (module_path ~= nil) then
loader.setenv("module_path", v..";"..
module_path);
end
@ -350,6 +354,9 @@ function config.load(file)
end
end
-- Cache the provided module_path at load time for later use
config.module_path = loader.getenv("module_path");
print("Loading kernel...");
config.loadkernel();