Mercurial > hg
view doc/Makefile @ 31209:dd2364f5180a
localrepo: handle rename with hardlinks properly
In "aftertrans", we rename "journal.*" to "undo.*". We expect "journal.*"
files to disappear after renaming.
However, if "journal.foo" and "undo.foo" refer to a same file (hardlink),
rename may be a no-op, leaving both files on disk, according to Linux
manpage [1]:
If oldpath and newpath are existing hard links referring to the same
file, then rename() does nothing, and returns a suc‐ cess status.
The POSIX specification [2] is not very clear about what to do.
To be safe, remove "undo.*" before the rename so "journal.*" cannot be left
on disk.
[1]: http://man7.org/linux/man-pages/man2/rename.2.html
[2]: http://pubs.opengroup.org/onlinepubs/9699919799/
author | Jun Wu <quark@fb.com> |
---|---|
date | Thu, 02 Mar 2017 21:49:30 -0800 |
parents | 80983af366b5 |
children | b584ed1b225d |
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SOURCES=$(notdir $(wildcard ../mercurial/help/*.[0-9].txt)) MAN=$(SOURCES:%.txt=%) HTML=$(SOURCES:%.txt=%.html) GENDOC=gendoc.py ../mercurial/commands.py ../mercurial/help.py \ ../mercurial/help/*.txt ../hgext/*.py ../hgext/*/__init__.py PREFIX=/usr/local MANDIR=$(PREFIX)/share/man INSTALL=install -c -m 644 PYTHON=python RSTARGS= export HGENCODING=UTF-8 all: man html man: $(MAN) html: $(HTML) common.txt $(SOURCES) $(SOURCES:%.txt=%.gendoc.txt): $(GENDOC) ${PYTHON} gendoc.py $(basename $@) > $@.tmp mv $@.tmp $@ %: %.txt %.gendoc.txt common.txt $(PYTHON) runrst hgmanpage $(RSTARGS) --halt warning \ --strip-elements-with-class htmlonly $*.txt $* %.html: %.txt %.gendoc.txt common.txt $(PYTHON) runrst html $(RSTARGS) --halt warning \ --link-stylesheet --stylesheet-path style.css $*.txt $*.html MANIFEST: man html # tracked files are already in the main MANIFEST $(RM) $@ for i in $(MAN) $(HTML); do \ echo "doc/$$i" >> $@ ; \ done install: man for i in $(MAN) ; do \ subdir=`echo $$i | sed -n 's/^.*\.\([0-9]\)$$/man\1/p'` ; \ mkdir -p $(DESTDIR)$(MANDIR)/$$subdir ; \ $(INSTALL) $$i $(DESTDIR)$(MANDIR)/$$subdir ; \ done clean: $(RM) $(MAN) $(HTML) common.txt $(SOURCES) $(SOURCES:%.txt=%.gendoc.txt) MANIFEST