[Xenomai-core] [patch] prepare-kernel shouldnt alter files thru links

[Xenomai-core] [patch] prepare-kernel shouldnt alter files thru links

[Jim Cromie]

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attached patch corrects a mistake in rev 985, which chmod'd a read-only 
file,
even if it was a symlink from a kernel-tree cloned with lndir.
This resulted in a bad original tree for use in building vanilla kernels.

with patch, script renames the symlink, copies it to the expected name,
and *then* chmods it, and appends to it.   Now vanilla kernel builds also
using same tree re-make w/o actually recompiling anything.


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Index: scripts/prepare-kernel.sh
===================================================================
--- scripts/prepare-kernel.sh	(revision 1029)
+++ scripts/prepare-kernel.sh	(working copy)
@@ -48,6 +48,10 @@
 patch_append() {
     file="$1"
     if test "x$output_patch" = "x"; then
+	if test -L "$linux_tree/$file" ; then
+	    mv "$linux_tree/$file" "$linux_tree/$file.orig"
+	    cp "$linux_tree/$file.orig" "$linux_tree/$file"
+	fi
 	chmod +w "$linux_tree/$file"
         cat >> "$linux_tree/$file"
     else

Re: [Xenomai-core] [patch] prepare-kernel shouldnt alter files thru links

[Philippe Gerum]

Jim Cromie wrote:
> 
> attached patch corrects a mistake in rev 985, which chmod'd a read-only 
> file,
> even if it was a symlink from a kernel-tree cloned with lndir.
> This resulted in a bad original tree for use in building vanilla kernels.
> 
> with patch, script renames the symlink, copies it to the expected name,
> and *then* chmods it, and appends to it.   Now vanilla kernel builds also
> using same tree re-make w/o actually recompiling anything.
> 

Sounds reasonable. Applied, thanks.

-- 

Philippe.