Mercurial > hg > mercurial-crew-with-dirclash
view hgeditor @ 917:7f3f55903496
Fix hg clone race with writer
Most read operations in hg don't need locks because we order reads and
writes for consistency. Clone is an exception to this as we're copying
entire file histories and could end up with more file history copied
than we have commits.
For now, make clone take a lock on the source repo. Non-hardlinked
clone should eventually be changed to use lockless pull.
author | mpm@selenic.com |
---|---|
date | Tue, 16 Aug 2005 14:53:47 -0800 |
parents | 9c918287d10b |
children | 1bc619b12025 |
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#!/bin/sh # # This is an example of using HGEDITOR to automate the signing of # commits and so on. # change this to one to turn on GPG support SIGN=0 # If you want to pass your favourite editor some other parameters # only for Mercurial, modify this: case "${EDITOR}" in "") EDITOR="vi" ;; emacs) EDITOR="$EDITOR -nw" ;; gvim|vim) EDITOR="$EDITOR -f -o" ;; esac HGTMP="" cleanup_exit() { rm -rf "$HGTMP" } # Remove temporary files even if we get interrupted trap "cleanup_exit" 0 # normal exit trap "exit 255" 1 2 3 6 15 # HUP INT QUIT ABRT TERM HGTMP="${TMPDIR-/tmp}/hgeditor.$RANDOM.$RANDOM.$RANDOM.$$" (umask 077 && mkdir "$HGTMP") || { echo "Could not create temporary directory! Exiting." 1>&2 exit 1 } ( cd "`hg root`" grep '^HG: changed' "$1" | cut -b 13- | while read changed; do hg diff "$changed" >> "$HGTMP/diff" done ) echo > "$HGTMP/msg" if [ "$SIGN" == "1" ]; then MANIFEST=`grep '^HG: manifest hash' "$1" | cut -b 19-` echo -e "\nmanifest hash: $MANIFEST" >> "$HGTMP/msg" fi grep -vE '^(HG: manifest hash .*)?$' "$1" >> "$HGTMP/msg" CHECKSUM=`md5sum "$HGTMP/msg"` $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $? echo "$CHECKSUM" | md5sum -c >/dev/null 2>&1 && exit 13 if [ "$SIGN" == "1" ]; then { head -n 1 "$HGTMP/msg" echo grep -v "^HG:" "$HGTMP/msg" | gpg -t -a -u "${HGUSER}" --clearsign } > "$HGTMP/msg.gpg" && mv "$HGTMP/msg.gpg" "$1" else mv "$HGTMP/msg" "$1" fi exit $?