32 lines
747 B
Plaintext
Executable File
32 lines
747 B
Plaintext
Executable File
#!/usr/bin/env nix-shell
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#!nix-shell -i bash
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set -e
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fspath="$1"
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acluser="$2"
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aclgroup="$3"
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aclmode="$4"
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shift 4
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# ensure any things created by the user script have the desired mode.
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# chmod doesn't work on symlinks, so we *have* to use this umask approach.
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decmask=$(( 0777 - "$aclmode" ))
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octmask=$(printf "%o" "$decmask")
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umask "$octmask"
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# try to chmod/chown the result even if the user script errors
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set +e
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("$@")
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user_status=$?
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set -e
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# claim ownership of the new thing (DON'T traverse symlinks)
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chown --no-dereference "$acluser:$aclgroup" "$fspath"
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# AS LONG AS IT'S NOT A SYMLINK, try to fix perms in case the entity existed before this script was called
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if ! test -L "$fspath"
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then
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chmod "$aclmode" "$fspath"
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fi
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exit "$user_status"
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