This simplifies Emacs a bit, since it no longer needs to worry
about closing file descriptors by hand in some cases.
It also fixes some unlikely races. Not all such races, as
libraries often open files internally without setting
close-on-exec, but it's an improvement.
* admin/merge-gnulib (GNULIB_MODULES): Add fcntl, pipe2.
(GNULIB_TOOL_FLAGS): Avoid binary-io, close. Do not avoid fcntl.
* configure.ac (mkostemp): New function to check for.
(PTY_OPEN): Pass O_CLOEXEC to posix_openpt.
* lib/fcntl.c, lib/getdtablesize.c, lib/pipe2.c, m4/fcntl.m4:
* m4/getdtablesize.m4, m4/pipe2.m4: New files, taken from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* nt/gnulib.mk: Remove empty gl_GNULIB_ENABLED_verify section;
otherwise, gnulib-tool complains given close-on-exec changes.
* nt/inc/ms-w32.h (pipe): Remove.
* nt/mingw-cfg.site (ac_cv_func_fcntl, gl_cv_func_fcntl_f_dupfd_cloexec)
(gl_cv_func_fcntl_f_dupfd_works, ac_cv_func_pipe2): New vars.
* src/alloc.c (valid_pointer_p) [!WINDOWSNT]:
* src/callproc.c (Fcall_process) [!MSDOS]:
* src/emacs.c (main) [!DOS_NT]:
* src/nsterm.m (ns_term_init):
* src/process.c (create_process):
Use 'pipe2' with O_CLOEXEC instead of 'pipe'.
* src/emacs.c (Fcall_process_region) [HAVE_MKOSTEMP]:
* src/filelock.c (create_lock_file) [HAVE_MKOSTEMP]:
Prefer mkostemp with O_CLOEXEC to mkstemp.
* src/callproc.c (relocate_fd) [!WINDOWSNT]:
* src/emacs.c (main): Use F_DUPFD_CLOEXEC, not plain F_DUPFD.
No need to use fcntl (..., F_SETFD, FD_CLOEXEC), since we're
now using pipe2.
* src/filelock.c (create_lock_file) [! HAVE_MKOSTEMP]:
Make the resulting file descriptor close-on-exec.
* src/lisp.h, src/lread.c, src/process.c (close_load_descs, close_process_descs):
* src/lread.c (load_descriptor_list, load_descriptor_unwind):
Remove; no longer needed. All uses removed.
* src/process.c (SOCK_CLOEXEC): Define to 0 if not supplied by system.
(close_on_exec, accept4, process_socket) [!SOCK_CLOEXEC]:
New functions.
(socket) [!SOCK_CLOEXEC]: Supply a substitute.
(Fmake_network_process, Fnetwork_interface_list):
(Fnetwork_interface_info, server_accept_connection):
Make newly-created socket close-on-exec.
* src/sysdep.c (emacs_open, emacs_fopen):
Make new-created descriptor close-on-exec.
* src/w32.c (fcntl): Support F_DUPFD_CLOEXEC well enough for Emacs.
* src/w32.c, src/w32.h (pipe2): Rename from 'pipe', with new flags arg.
Fixes: debbugs:14803
nt/INSTALL.MSYS: mingw-get is not a GUI program (yet).
msys-automake is not suitable for MinGW builds. Mention the
--enable-locallisppath switch to msysconfig.sh. Suggested by
׃scar Fuentes <ofv@wanadoo.es>.
Makefile.in (msys_to_w32): Modify to support d:\foo file names.
(msys_lisppath_to_w32, msys_prefix_subst, msys_sed_sh_escape): New
variables.
(epaths-force-w32): Use them.
epaths.nt (PATH_SITELOADSEARCH): Fix commentary.
epaths.in: Fix commentary to PATH_SITELOADSEARCH.
lib/Makefile.am: If building for MS-Windows, include
nt/gnulib.mk instead of lib/gnulib.mk.
configure.ac: Adapt to MSYS build on MS-Windows.
Makefile.in (NTDIR): New variable, for the MSYS build on
MS-Windows.
(SUBDIR): Add $(NTDIR).
(.PHONY): Add epaths-force-w32.
(msys_to_w32): New variable.
(epaths-force-w32, install-nt, uninstall-nt): New targets.
(lib-src src): Add $(NTLIB) to prerequisites.
(lib lib-src lisp leim nt): Add 'nt'.
(config.status): Use $(CFG).
(.PHONY): Add install-$(NTDIR) and uninstall-$(NTDIR).
(install, install-arch-dep): Add install-$(NTDIR).
(uninstall): Depend on uninstall-$(NTDIR).
(mostlyclean, clean, distclean, bootstrap-clean): Add 'nt'.
* GNUmakefile (CFG): New variable, uses mingw-cfg.site as
CONFIG_SITE for the MSYS build on MS-Windows.
(Makefile): Use $(CFG).
.bzrignore: Ignore *.res, *.tmp, and *.map. Remove
src/emacs.res.
etc/NEWS: Advertise the MSYS build on MS-Windows.
leim/Makefile.in (leim-list.el, check-declare): Use reveal-filename.
lib-src/update-game-score.c [WINDOWSNT]: Include "ntlib.h".
lib-src/ntlib.h (sleep): Update prototype.
(geteuid): Add prototype.
lib-src/ntlib.c (sleep): Now returns an unsigned value.
(getgid): New function.
lib-src/Makefile.in (CLIENTW, LIB_WSOCK32, LIBS_ECLIENT, NTLIB)
(CLIENTRES, WINDRES, NTINC, NTDEPS): New variables.
(INSTALLABLES): Add $(CLIENTW).
(LIBS_MOVE): Use $(LIB_WSOCK32).
($(DESTDIR)${archlibdir}): Use $(EXEEXT) on update-game-score.
(test-distrib${EXEEXT}): Use $(EXEEXT) on test-distrib.
(etags${EXEEXT}, ebrowse${EXEEXT}, ctags${EXEEXT})
(profile${EXEEXT}, make-docfile${EXEEXT}, movemail${EXEEXT})
(emacsclient${EXEEXT}, hexl${EXEEXT}, update-game-score${EXEEXT}):
Add $(NTLIB) to prerequisites. Use $(EXEEXT).
(pop.o): Add pop.h to prerequisites.
(emacsclientw${EXEEXT}, ntlib.o): New targets.
(emacsclient.res): New target.
lisp/subr.el (reveal-filename): New function.
lisp/loadup.el: Compute Emacs executable versions on MS-Windows,
where executables have the .exe extension. Add a hard link
emacs-XX.YY.ZZ.exe on MS-Windows.
lisp/Makefile.in (XARGS_LIMIT): New variable.
(custom-deps, finder-data, autoloads)
($(MH_E_DIR)/mh-loaddefs.el, $(TRAMP_DIR)/tramp-loaddefs.el)
($(CAL_DIR)/cal-loaddefs.el, $(CAL_DIR)/diary-loaddefs.el)
($(CAL_DIR)/hol-loaddefs.el): Use reveal-filename.
(compile-main): Limit xargs according to $(XARGS_LIMIT).
nt/msysconfig.sh: New file.
nt/mingw-cfg.site: New file.
nt/makefile.w32-in (LOCAL_FLAGS): Add -DOLD_PATHS=1.
nt/inc/unistd.h: Include pwd.h and sys/types.h.
nt/inc/sys/time.h (_TIMEVAL_DEFINED, timerisset, timercmp)
(timerclear): Define.
(gettimeofday): Adjust signature to be Posix compatible, by using
the 'restrict' keyword.
nt/inc/sys/stat.h (UTIME_NOW, UTIME_OMIT): Define.
(struct _stat, struct _stati64): Define.
nt/inc/sys/socket.h (timeval): Define only for MSVC.
(FD_SET, FD_CLR, FD_ISSET, fd_set): Redefine only if
EMACS_CONFIG_H is defined.
(timeval): Undefine only for MSVC.
nt/inc/ms-w32.h (HAVE___BUILTIN_UNWIND_INIT, restrict)
(HAVE_WINDOW_SYSTEM, HAVE_MENUS, EMACS_CONFIGURATION)
(EMACS_CONFIG_OPTIONS, HAVE_LONG_LONG_INT)
(HAVE_UNSIGNED_LONG_LONG_INT): Define only if not already defined.
(fileno): Move definition after including stdio.h.
(sigset_t): Guard typedef by _W64.
nt/gnulib.mk: New file.
nt/epaths.nt: New file.
nt/addpm.c [!OLD_PATHS]: Include src/epaths.h, instead of having a
copy of the file names there.
<env_vars> [!OLD_PATHS]: Use macros from epaths.h instead of
literal strings.
nt/Makefile.in: New file.
nt/INSTALL.MSYS: New file.
nt/INSTALL: Mention INSTALL.MSYS.
src/w32.c: Include epaths.h.
(init_environment): Use cmdproxy.exe without leading directories.
Support emacs.exe in src; point SHELL to cmdproxy in ../nt in that
case.
(gettimeofday): Adjust signature and return value to Posix
expectations.
src/unexw32.c (open_output_file): Delete the existing emacs.exe
before creating it, to break the hard link to the versioned
executable.
src/Makefile.in (EMACS_MANIFEST, CM_OBJ, TEMACS_POST_LINK)
(ADDSECTION, EMACS_HEAPSIZE, MINGW_TEMACS_POST_LINK)
(FIRSTFILE_OBJ): New variables.
(W32_RES): Rename to EMACSRES. All users changed.
(base_obj): Use $(CM_OBJ).
(ALLOBJS): Use $(FIRSTFILE_OBJ).
(emacs$(EXEEXT)): Depend on $(ADDSECTION).
(temacs$(EXEEXT)): Use $(TEMACS_POST_LINK), and move
$(W32_RES_LINK) before $(LIBES).
(emacs.res): Depend on $(EMACS_MANIFEST). Put emacs.rc in nt.
* lisp/loadup.el: Just use unversioned DOC.
* Makefile.in (install-doc): DOC file is not version specific any more.
* .bzrignore: Don't ignore DOC-* any more.
* admin/quick-install-emacs: Don't prune DOC-* files a any more.
* doc/lispref/loading.texi (Autoload):
* doc/lispref/help.texi (Documentation Basics, Accessing Documentation)
(Accessing Documentation, Accessing Documentation): DOC-* is now DOC.
* etc/.gitignore: Don't ignore DOC-* any more.
* lib-src/makefile.w32-in ($(DOC)): Use DOC rather than DOC-X.
* msdos/sed1x.inp: Don't rewrite DOC any more.
* nt/makefile.w32-in (clean, top-distclean): DOC-X doesn't exist any more.
* src/Makefile.in (bootstrap-clean): DOC-* doesn't exist any more.
* src/makefile.w32-in (DOC): Use just "DOC".
* configure.ac: Remove -with-acl option, since Gnulib does that for
us now.
(LIBACL_LIBS): Remove; no longer needed.
* lib/Makefile.am (CLEANFILES, SUFFIXES): New (empty) macros,
for the benefit of the new ACL implementation.
* lib/makefile.w32-in (GNULIBOBJS): Add $(BLD)/acl-errno-valid.$(O).
($(BLD)/acl-errno-valid.$(O)): New rule.
* lib/acl-errno-valid.c, lib/acl-internal.h, lib/acl.h:
* lib/acl_entries.c, lib/errno.in.h, lib/file-has-acl.c:
* lib/qcopy-acl.c, lib/qset-acl.c, m4/acl.m4, m4/errno_h.m4:
New files, taken from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* admin/merge-gnulib (GNULIB_MODULES): Add qacl.
(GNULIB_TOOL_FLAGS): Do not avoid errno.
* etc/NEWS: Emacs is no longer limited to POSIX ACLs. --disable-acl,
not --without-acl, since we're now using Gnulib's implementation.
* nt/config.nt (HAVE_ACL_SET_FILE): Rename from HAVE_POSIX_ACL.
* nt/inc/ms-w32.h (EOPNOTSUPP): New macro.
* src/Makefile.in (LIB_ACL): New macro.
(LIBACL_LIBS): Remove.
(LIBES): Use LIB_ACL, not LIBACL_LIBS.
* src/fileio.c: Include <acl.h>.
Use HAVE_ACL_SET_FILE rather than HAVE_POSIX_ACL.
(ACL_NOT_WELL_SUPPORTED): Remove. All uses replaced by
!acl_errno_valid.
(Fcopy_file) [!WINDOWSNT]: Use qcopy_acl instead of rolling
it ourselves.
Fixes: debbugs:14295
* nt/emacs.rc: Use 64-bit manifest for 64-bit Cygwin build.
* configure.ac (W32_RES_LINK): Remove unnecessary linker directive
`-Wl,-bpe-i386', which is confusing in the 64-bit case.
