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e2b6a9d0bf
1) permissions aren't respected in the merge script (primarily because they're never passed in to it in the first place). Fix that and also check for permission conflicts in the merge 2) the delete of a file in both branches may indeed be just that, but it could also be the indicator of a rename conflict (file moved to different locations in both branches), so error out and ask the committer for guidance. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
91 lines
1.9 KiB
Bash
Executable file
91 lines
1.9 KiB
Bash
Executable file
#!/bin/sh
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#
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# This is the git merge script, called with
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#
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# $1 - original file SHA1 (or empty)
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# $2 - file in branch1 SHA1 (or empty)
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# $3 - file in branch2 SHA1 (or empty)
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# $4 - pathname in repository
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#
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#
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# Handle some trivial cases.. The _really_ trivial cases have
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# been handled already by read-tree, but that one doesn't
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# do any merges that migth change the tree layout
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#
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# if the directory is newly added in a branch, it might not exist
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# in the current tree
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dir=$(dirname "$4")
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mkdir -p "$dir"
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case "${1:-.}${2:-.}${3:-.}" in
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#
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# deleted in both
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#
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"$1..")
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echo "ERROR: $4 is removed in both branches"
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echo "ERROR: This is a potential rename conflict"
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exit 1;;
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#
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# deleted in one and unchanged in the other
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#
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"$1.." | "$1.$1" | "$1$1.")
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rm -f -- "$4"
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echo "Removing $4"
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update-cache --remove -- "$4"
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exit 0
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;;
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#
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# added in one
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#
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".$2." | "..$3" )
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echo "Adding $4 with perm $6$7"
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mv $(unpack-file "$2$3") $4
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chmod "$6$7" $4
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update-cache --add -- $4
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exit 0
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;;
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#
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# Added in both (check for same permissions)
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#
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".$2$2")
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if [ "$6" != "$7" ]; then
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echo "ERROR: File $4 added in both branches, permissions conflict $6->$7"
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exit 1
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fi
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echo "Adding $4 with perm $6"
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mv $(unpack-file "$2") $4
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chmod "$6" $4
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update-cache --add -- $4
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exit 0;;
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#
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# Modified in both, but differently ;(
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#
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"$1$2$3")
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echo "Auto-merging $4"
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orig=$(unpack-file $1)
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src1=$(unpack-file $2)
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src2=$(unpack-file $3)
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merge "$src2" "$orig" "$src1"
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ret=$?
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if [ "$6" != "$7" ]; then
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echo "ERROR: Permissions $5->$6->$7 don't match merging $src2"
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if [ $ret -ne 0 ]; then
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echo "ERROR: Leaving conflict merge in $src2"
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fi
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exit 1
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fi
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chmod -- "$6" "$src2"
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if [ $ret -ne 0 ]; then
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echo "ERROR: Leaving conflict merge in $src2"
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exit 1
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fi
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cp -- "$src2" "$4" && chmod -- "$6" "$4" && update-cache --add -- "$4" && exit 0
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;;
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*)
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echo "Not handling case $1 -> $2 -> $3"
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;;
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esac
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exit 1
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