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chg: let hgc_open support long path...
chg: let hgc_open support long path "sizeof(sun_path)" is too small. Use the chdir trick to support long socket path, like "mercurial.util.bindunixsocket". It's useful for cases where TMPDIR is long. Modern OS X rewrites TMPDIR to a long value. And we probably want to use XDG_RUNTIME_DIR [2] for Linux. The approach is a bit different from the previous plan, where we will have hgc_openat and pass cmdserveropts.sockdirfd to it. That's because the current change is easier: chg has to pass a full path to "hg" as the "--address" parameter. There is no "--address-basename" or "--address-dirfd" flags. The next patch will remove "sockdirfd". Note: It'd be nice if we can use a native "connectat" implementation. However, that's not available everywhere. Some platform (namely FreeBSD) does support it, but the implementation has bugs so it cannot be used [2]. [1]: https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html [2]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2016-April/082892.html
Yuya Nishihara - - Load All Authors

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Makefile
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Yuya Nishihara
chg: use in-tree hg executable to start server for testing
 r28062 HG = $(CURDIR)/../../hg
Yuya Nishihara
chg: import frontend sources...
 r28060
TARGET = chg
SRCS = chg.c hgclient.c util.c
OBJS = $(SRCS:.c=.o)
CFLAGS ?= -O2 -Wall -Wextra -pedantic -g
CPPFLAGS ?= -D_FORTIFY_SOURCE=2
override CFLAGS += -std=gnu99
Jun Wu
chg: allows default hg path to be overridden...
 r28605 ifdef HGPATH
override CPPFLAGS += -DHGPATH=\"$(HGPATH)\"
endif
Yuya Nishihara
chg: import frontend sources...
 r28060
DESTDIR =
PREFIX = /usr/local
MANDIR = $(PREFIX)/share/man/man1
CHGSOCKDIR = /tmp/chg$(shell id -u)
CHGSOCKNAME = $(CHGSOCKDIR)/server
.PHONY: all
all: $(TARGET)
$(TARGET): $(OBJS)
$(CC) $(LDFLAGS) -o $@ $(OBJS)
chg.o: hgclient.h util.h
hgclient.o: hgclient.h util.h
util.o: util.h
.PHONY: install
install: $(TARGET)
install -d $(DESTDIR)$(PREFIX)/bin
install -m 755 $(TARGET) $(DESTDIR)$(PREFIX)/bin
install -d $(DESTDIR)$(MANDIR)
install -m 644 chg.1 $(DESTDIR)$(MANDIR)
.PHONY: serve
serve:
[ -d $(CHGSOCKDIR) ] || ( umask 077; mkdir $(CHGSOCKDIR) )
$(HG) serve --cwd / --cmdserver chgunix \
--address $(CHGSOCKNAME) \
--config cmdserver.log=/dev/stderr
.PHONY: clean
clean:
$(RM) $(OBJS)
.PHONY: distclean
distclean:
$(RM) $(OBJS) $(TARGET)