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authorRob Landley <rob@landley.net>2014-10-22 17:11:06 -0500
committerRob Landley <rob@landley.net>2014-10-22 17:11:06 -0500
commit9b891d54c9fa422bb2dc87bde2b741d71441dfbb (patch)
treeb93dd7732bd85fe22dd5add0474f8b52c6846d1c /kconfig/util.c
parent9b0d8691b9dad6674ea6d778bebcf3bbd76cc6de (diff)
downloadtoybox-9b891d54c9fa422bb2dc87bde2b741d71441dfbb.tar.gz
Teach ln -f to leave original target alone if link creation fails.
Suggested by Ashwini Sharma, I wound up implementing it by creating the new link at a temporary name and renaming it over the old one instead of renaming the old file out of the way and putting it back if it failed. (Because "mkdir -p one/one/blah && ln -sf /bin/one one" would otherwise rename one/one out of the way and only notice it can't delete it way at the end when recovery's darn awkward, vs create new thing and if rename fails (including EISDIR) that's the main error path. And yes the temporary name is in the same directory as the destination so we never rename between mounts.) link over the old one instead of renaming the old file and renaming it back.
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