Commit graph

2777 commits

Author SHA1 Message Date
Jim Porter
3e756b12b6 Suppress emacsclient message that daemon should have started if --quiet
* lib-src/emacsclient.c (start_daemon_and_retry_set_socket): Don't
output "daemon should have started" message if --quiet (bug#52214).
2021-12-01 05:56:55 +01:00
Po Lu
8f5d2a3181 Merge remote-tracking branch 'origin/master' into feature/pgtk 2021-11-30 08:16:50 +08:00
Po Lu
85a078e785 Add support for the Haiku operating system and its window system
* .gitignore: Add binaries specific to Haiku.

* Makefie.in (HAVE_BE_APP): New variable.
(install-arch-dep): Install Emacs and Emacs.pdmp when
using Haiku.

* configure.ac: Detect and configure for Haiku and
various related configurations.
(be-app, be-freetype, be-cairo): New options.
(HAVE_BE_APP, HAIKU_OBJ, HAIKU_CXX_OBJ)
(HAIKU_LIBS, HAIKU_CFLAGS): New variables.
(HAIKU, HAVE_TINY_SPEED_T): New define.
(emacs_config_features): Add BE_APP.

* doc/emacs/Makefile.in (EMACSSOURCES): Add Haiku
appendix.

* doc/emacs/emacs.texi: Add Haiku appendix to menus and
include it.

* doc/emacs/haiku.texi: New Haiku appendix.

* doc/lispref/display.texi (Defining Faces, Window Systems):
Explain meaning of `haiku' as a window system identifier.
(haiku-use-system-tooltips): Explain meaning of system
tooltips on
Haiku.

* doc/lispref/frames.texi (Multiple Terminals): Explain
meaning of haiku as a display type.
(Frame Layout): Clarify section for Haiku frames.
(Size Parameters): Explain limitations of fullwidth and
fullheight on Haiku.
(Management Parameters): Explain limitations of
inhibiting double buffering on builds with Cairo,
and the inability of frames with no-accept-focus to
receive keyboard input on Haiku.
(Font and Color Parameters): Explain the different font
backends available on Haiku.
(Raising and Lowering): Explain that lowering and
restacking frames doesn't work on Haiku.
(Child Frames): Explain oddities of child frame
visibility on Haiku.

* doc/lispref/os.texi (System Environment): Explain
meaning of haiku.
* etc/MACHINES: Add appropriate notices for Haiku.
* etc/NEWS: Document changes.
* etc/PROBLEMS: Document font spacing bug on Haiku.

* lib-src/Makefile.in: Build be-resources binary on
Haiku.
(CXX, CXXFLAGS, NON_CXX_FLAGS, ALL_CXXFLAGS)
(HAVE_BE_APP, HAIKU_LIBS, HAIKU_CFLAGS): New variables.
(DONT_INSTALL): Add be-resources binary if on Haiku.
(be-resources): New target.

* lib-src/be_resources: Add helper binary for setting
resources on the Emacs application.

* lib-src/emacsclient.c (decode_options): Set
alt_display to "be" on Haiku.

* lisp/cus-edit.el (custom-button, custom-button-mouse)
(custom-button-unraised, custom-button-pressed): Update
face definitions for Haiku.

* lisp/cus-start.el: Add haiku-debug-on-fatal-error and
haiku-use-system-tooltips.

* lisp/faces.el (face-valid-attribute-values): Clarify
attribute comment for Haiku.
(tool-bar): Add appropriate toolbar color for Haiku.

* lisp/frame.el (haiku-frame-geometry)
(haiku-mouse-absolute-pixel-position)
(haiku-set-mouse-absolute-pixel-position)
(haiku-frame-edges)
(haiku-frame-list-z-order): New function declarations.

(frame-geometry, frame-edges)
(mouse-absolute-pixel-position)
(set-mouse-absolute-pixel-position)
(frame-list-z-order): Call appropriate window system
functions on Haiku.

(display-mouse-p, display-graphic-p)
(display-images-p, display-pixel-height)
(display-pixel-width, display-mm-height)
(display-mm-width, display-backing-store)
(display-save-under, display-planes)
(display-color-cells, display-visual-class): Update type
tests for Haiku.

* lisp/international/mule-cmds.el
(set-coding-system-map): Also
prevent set-terminal-coding-system from appearing in the menu
bar on Haiku.

* lisp/loadup.el: Load Haiku-specific files when built
with Haiku, and don't rename newly built Emacs on Haiku as BFS
doesn't support hard links.

* lisp/menu-bar.el (menu-bar-open): Add for Haiku.

* lisp/mwheel.el (mouse-wheel-down-event): Expect
wheel-up on Haiku.
(mouse-wheel-up-event): Expect wheel-down on Haiku.
(mouse-wheel-left-event): Expect wheel-left on Haiku.
(mouse-wheel-right-event): Expect wheel-right on Haiku.

* lisp/net/browse-url.el
(browse-url--browser-defcustom-type):
Add option for WebPositive.
(browse-url-webpositive-program): New variable.
(browse-url-default-program): Search for WebPositive.
(browse-url-webpositive): New function.

* lisp/net/eww.el (eww-form-submit, eww-form-file)
(eww-form-checkbox, eww-form-select): Define faces
appropriately for Haiku.

* lisp/term/haiku-win.el: New file.

* lisp/tooltip.el (menu-or-popup-active-p): New function
declaration.
(tooltip-show-help): Don't use tooltips on Haiku when a
menu is active.

* lisp/version.el (haiku-get-version-string): New
function declaration.
(emacs-version): Add Haiku version string if
appropriate.

* src/Makefile.in: Also produce binary named "Emacs"
with Haiku resources set.

(CXX, HAIKU_OBJ, HAIKU_CXX_OBJ, HAIKU_LIBS)
(HAIKU_CFLAGS, HAVE_BE_APP, NON_CXX_FLAGS)
(ALL_CXX_FLAGS): New variables.

(.SUFFIXES): Add .cc.
(.cc.o): New target.
(base_obj): Add Haiku C objects.
(doc_obj, obj): Split objects that should scanned for
documentation into doc_obj.
(SOME_MACHINE_OBJECTS): Add appropriate Haiku C objects.
(all): Depend on Emacs and Emacs.pdmp on Haiku.
(LIBES): Add Haiku libraries.
(gl-stamp)
($(etc)/DOC): Scan doc_obj instead of obj
(temacs$(EXEEXT): Use C++ linker on Haiku.
(ctagsfiles3): New variable.
(TAGS): Scan C++ files.

* src/alloc.c (garbage_collect): Mark Haiku display.

* src/dispextern.h (HAVE_NATIVE_TRANSFORMS): Also enable
on Haiku.
(struct image): Add fields for Haiku transforms.
(RGB_PIXEL_COLOR): Define to unsigned long on Haiku as
well.
(sit_for): Also check USABLE_SIGPOLL.
(init_display_interactive): Set initial window system to
Haiku on Haiku builds.

* src/emacs.c (main): Define Haiku syms and init haiku
clipboard.
(shut_down_emacs): Quit BApplication on Haiku and
trigger debug
on aborts if haiku_debug_on_fatal_error.
(Vsystem_type): Update docstring.

* src/fileio.c (next-read-file-uses-dialog-p): Enable on
Haiku.

* src/filelock.c (WTMP_FILE): Only define if BOOT_TIME
is also defined.

* src/floatfns.c (double_integer_scale): Work around
Haiku libroot brain damage.

* src/font.c (syms_of_font): Define appropriate font
driver symbols for Haiku builds with various options.

* src/font.h: Also enable ftcrfont on Haiku builds with
Cairo.
(font_data_structures_may_be_ill_formed): Also enable on
Haiku builds that have Cairo.

* src/frame.c (Fframep): Update doc-string for Haiku
builds and return haiku if appropriate.
(syms_of_frame): New symbol `haiku'.

* src/frame.h (struct frame): Add output data for Haiku.
(FRAME_HAIKU_P): New macro.
(FRAME_WINDOW_P): Test for Haiku frames as well.

* src/ftcrfont.c (RED_FROM_ULONG, GREEN_FROM_ULONG)
(BLUE_FROM_ULONG): New macros.
(ftcrfont_draw): Add haiku specific code for Haiku
builds with Cairo.

* src/ftfont.c (ftfont_open): Set face.
(ftfont_has_char, ftfont_text_extents): Work around
crash.
(syms_of_ftfont): New symbol `mono'.

* src/ftfont.h (struct font_info): Enable Cairo-specific
fields for Cairo builds on Haiku.

* src/haiku_draw_support.cc:
* src/haiku_font_support.cc:
* src/haiku_io.c:
* src/haiku_select.cc:
* src/haiku_support.cc:
* src/haiku_support.h:
* src/haikufns.c:
* src/haikufont.c:
* src/haikugui.h:
* src/haikuimage.c:
* src/haikumenu.c:
* src/haikuselect.c:
* src/haikuselect.h:
* src/haikuterm.c:
* src/haikuterm.h: Add new files for Haiku windowing
support.

* src/haiku.c: Add new files for Haiku operating system
support.

* src/image.c: Implement image transforms and native XPM
support
on Haiku.

(GET_PIXEL, PUT_PIXEL, NO_PIXMAP)
(PIX_MASK_RETAIN, PIX_MASK_DRAW)
(RGB_TO_ULONG, RED_FROM_ULONG, GREEN_FROM_ULONG)
(BLUE_FROM_ULONG, RED16_FROM_ULONG, GREEN16_FROM_ULONG)
(BLUE16_FROM_ULONG): Define to appropriate values on
Haiku.

(image_create_bitmap_from_data): Add Haiku support.
(image_create_bitmap_from_file): Add TODO on Haiku.
(free_bitmap_record): Free bitmap on Haiku.
(image_size_in_bytes): Implement for Haiku bitmaps.
(image_set_transform): Implement on Haiku.
(image_create_x_image_and_pixmap_1): Implement on Haiku,
24-bit or 1-bit only.
(image_destroy_x_image, image_get_x_image): Use correct
img and pixmap values on Haiku.
(lookup_rgb_color): Use correct macro on Haiku.
(image_to_emacs_colors): Implement on Haiku.
(image_disable_image): Disable on Haiku.
(image_can_use_native_api): Test for translator presence
on Haiku.
(native_image_load): Use translator on Haiku.
(imagemagick_load_image): Add Haiku-specific quirks.
(Fimage_transforms_p): Allow rotate90 on Haiku.
(image_types): Enable native XPM support on Haiku.
(syms_of_image): Enable XPM images on Haiku.

* src/keyboard.c (kbd_buffer_get_event)
(handle_async_input, handle_input_available_signal)
(handle_user_signal, Fset_input_interrupt_mode)
(init_keyboard): Check for USABLE_SIGPOLL along with
USABLE_SIGIO.

* src/lisp.h (pD): Work around broken Haiku headers.
(HAVE_EXT_MENU_BAR): Define on Haiku.
(handle_input_available_signal): Enable if we just have
SIGPOLL as well.

* src/menu.c (have_boxes): Return true on Haiku.
(single_menu_item): Enable toolkit menus on Haiku.
(find_and_call_menu_selection): Also enable on Haiku.

* src/process.c (keyboard_bit_set): Enable with only
usable SIGPOLL.
(wait_reading_process_output): Test for SIGPOLL as well
as SIGIO availability.

* src/sound.c (sound_perror, vox_open)
(vox_configure, vox_close): Enable for usable SIGPOLL as
well.

* src/sysdep.c (sys_subshell): Enable for usable SIGPOLL.
(reset_sigio): Make conditional on F_SETOWN.
(request_sigio, unrequest_sigio)
(emacs_sigaction_init): Also handle SIGPOLLs.
(init_sys_modes): Disable TCXONC usage on Haiku, as it
doesn't have any ttys other than pseudo ttys, which don't
support C-s/C-q flow control, and causes compiler warnings.
(speeds): Disable high speeds if HAVE_TINY_SPEED_T.

* src/termhooks.h (enum output_method): Add output_haiku.
(struct terminal): Add Haiku display info.
(TERMINAL_FONT_CACHE): Enable for Haiku.

* src/terminal.c (Fterminal_live_p): Return `haiku' if
appropriate.
* src/verbose.mk.in (AM_V_CXX, AM_V_CXXLD): New logging
variables.

* src/xdisp.c (redisplay_internal)
(note_mouse_highlight): Return on Haiku if a popup is activated.
(display_menu_bar): Return on Haiku if frame is a Haiku
frame.

* src/xfaces.c (GCGraphicsExposures): Enable correctly on Haiku.
(x_create_gc): Enable dummy GC code on Haiku.

* src/xfns.c (x-server-version, x-file-dialog): Add
Haiku specifics to doc strings.

* src/xterm.c (syms_of_xterm): Add Haiku information to
doc string.
2021-11-20 21:46:07 +08:00
Yuuki Harano
4dd1f56f29 Merge branch 'master' of git.savannah.gnu.org:/srv/git/emacs into feature/pgtk 2021-11-11 00:39:53 +09:00
Gregory Heytings
2bcc2160c9 New emacsclient option to either create or reuse an existing frame.
* doc/emacs/misc.texi (emacsclient Options): Document the new option.

* doc/man/emacsclient.1: Mention the new option (bug#51374).
* etc/NEWS: Mention the new option.

* lib-src/emacsclient.c (reuse_frame): New variable.
(longopts): New option.
(decode_options): Decode the new option.
(print_help_and_exit): Document the new option.
(main): Use the new option.
2021-11-05 00:14:30 +01:00
Eli Zaretskii
3bad61e1ac Fix compilation errors with MinGW64 GCC 11
* lib-src/ntlib.c (IS_DIRECTORY_SEP): Remove redundant macro.

* lib-src/ntlib.c (DEFER_MS_W32_H):
* nt/addpm.c (DEFER_MS_W32_H):
* nt/cmdproxy.c (DEFER_MS_W32_H):
* nt/ddeclient.c (DEFER_MS_W32_H):
* nt/preprep.c (DEFER_MS_W32_H):
* nt/runemacs.c (DEFER_MS_W32_H): Fix a typo.
* nt/Makefile.in (BASE_CFLAGS): Add -I switches to pick up
config.h and lib/attribute.h.
2021-10-24 20:45:56 +03:00
Paul Eggert
beb265450c Include <config.h> first in MS-Windows source 2021-10-24 20:22:17 +03:00
Eli Zaretskii
3f763898aa Fix compilation errors with MinGW64 GCC 11
* lib-src/ntlib.c (_GL_ATTRIBUTE_MALLOC)
(_GL_ATTRIBUTE_DEALLOC_FREE): Define to avoid compilation errors
with MinGW64 GCC 11.  Suggested by Andy Moreton
<andrewjmoreton@gmail.com>.  Do not merge to master.
2021-10-24 20:19:47 +03:00
Philipp Stephani
b497add971 Fix Seccomp filter for newer GNU/Linux systems (Bug#51073).
On some systems, process startup calls prctl(PR_CAPBSET_READ) via
'cap_get_bound'.  We can just return EINVAL.

* lib-src/seccomp-filter.c (main): Add a rule for
prctl(PR_CAPBSET_READ, ...).
2021-10-09 19:39:31 +02:00
Paul Eggert
732c70a0d9 Simplify socket symlink-attack checking
This is a minor bugfix cleanup (Bug#33847#161).
* lib-src/emacsclient.c: Move "#include <acl.h>" to inside
"#ifdef SOCKETS_IN_FILE_SYSTEM", which is more accurate
and simpler than having a separate "#ifndef WINDOWSNT".
(O_PATH): Likewise.
2021-10-03 11:42:20 -07:00
Stefan Kangas
0cabf8bc36 ; Fix typos 2021-09-03 13:05:32 +02:00
Philipp Stephani
8fa624b39b Improve compatibility with musl-libc (Bug#48789)
* lib-src/seccomp-filter.c (export_filter): Remove use of
nonstandard macro TEMP_FAILURE_RETRY.
2021-08-29 20:51:39 +02:00
Alan Third
3065b6b73b Fix libexec installation on NS (bug#50250)
* lib-src/Makefile.in (ns_applibexecdir): New variable.
2021-08-29 13:09:21 +01:00
Omar Polo
5b55659bae Avoid using %n in emacsclient
* lib-src/emacsclient.c (local_sockname): Avoid using %n (bug#50155).
2021-08-22 16:23:54 +02:00
Yuuki Harano
13a9a5e836 Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-07-25 23:34:55 +09:00
Paul Eggert
007744dd04 Redo emacsclient socket symlink-attack checking
* admin/merge-gnulib (GNULIB_MODULES): Add file-has-acl.
* lib/file-has-acl.c: New file, copied from Gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* lib-src/emacsclient.c: Include acl.h, for file_has_acl.
(O_PATH): Default to O_SEARCH, which is good enough here.
(union local_sockaddr): New type.
(socket_status): Remove, replacing with ...
(connect_socket): New function.  All callers changed.
This function checks for ownership and permissions issues with the
parent directory of the socket file, instead of checking the
owner of the socket (which does not help security).
(socknamesize): Move to file scope.
(local_sockname): New arg S.  No need to pass socknamesize.
UID arg is now uid_t.  All callers changed.  Get file descriptor
of parent directory of socket, to foil some symlink attacks.
Do not follow symlinks to that directory.
(set_local_socket): Create the socket here instead of on
each attempt to connect it.  Fall back from XDG_RUNTIME_DIR
to /tmp only if the former fails due to ENOENT.  Adjust
permission-failure diagnostic to match changed behavior.

This addresses Bug#33847, which complained about emacsclient in a
safer XDG environment not connecting to an Emacs server running in
a less-safe enviroment outside XDG.  The patch fixes a
longstanding issue with emacsclient permission checking.
It’s ineffective to look at the permission of the socket file
itself; on some platforms, these permissions are ignored anyway.
What matters are the permissions on the parent directory of the
socket file, as these are what make symlink attacks possible.
Change the permissions check accordingly, and also refuse to
follow symlinks to that parent directory.  These changes make it
OK for emacsclient to fall back from XDG_RUNTIME_DIR to the
traditionally less-safe /tmp/emacsNNNN directories, since /tmp is
universally sticky nowadays.
2021-07-23 13:33:37 +02:00
Yuuki Harano
b242394f24 Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-07-18 18:44:54 +09:00
Paul Eggert
2337869fbf Pacify gcc 11.1.1 -Wanalyzer-null-argument
* lib-src/etags.c (regexp): Omit member force_explicit_name,
since it’s always true.  All uses removed.  This lets us
remove calls to strlen (name) where GCC isn’t smart enough
to deduce that name must be nonnull.
* lib-src/movemail.c (main): Fix bug that could cause
link (tempname, NULL) to be called.
* src/emacs.c (argmatch): Break check into two ‘if’s,
since GCC doesn’t seem to be smart enough to check the single ‘if’.
* src/gtkutil.c (xg_update_menu_item): Fix bug where strcmp
could be given a NULL arg.
* src/xfont.c (xfont_list_family): Use nonnull value for dummy
initial value.
2021-07-12 00:12:20 -07:00
Yuuki Harano
01b0a909b5 Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-06-20 18:17:23 +09:00
Eli Zaretskii
6af9f1f3ef Improve and update the 'etags' test suite
* lib-src/etags.c (mercury_pr): Remove redundant comment.

* test/manual/etags/merc-src/accumulator.m: Add more complex
declarations.
* test/manual/etags/ETAGS.good_1:
* test/manual/etags/ETAGS.good_2:
* test/manual/etags/ETAGS.good_3:
* test/manual/etags/ETAGS.good_4:
* test/manual/etags/ETAGS.good_5:
* test/manual/etags/ETAGS.good_6:
* test/manual/etags/CTAGS.good: Adapt to latest changes in 'etags'
and the test suite.  (Bug#47408)
2021-06-18 14:28:16 +03:00
Fabrice Nicol
0ffcf7479c Fix Mercury support, notably qualified procedures.
Correct the previous fix (did not correctly handle qualified types).
    Also fix the following issues:
    - remove module name (+ dot) from tags, as prefixing module name is
      often inconsistent in code and may cause tags to be too specific.
    - now tag 0-arity predicates and functions (':- func foo_14.')
    - now tag one-word declarations (':- interface.')

    * lib-src/etags.c (mercury_pr): Pass the correct NAME and NAMELEN
    arguments to 'make_tag'.
    (mercury_decl): Return more information about the declaration or
    definition it finds.  This allows mercury_pr to be smarter.
    (Bug#47408)
2021-06-18 14:18:34 +03:00
Yuuki Harano
7d5e94bada Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-06-13 17:34:06 +09:00
Eli Zaretskii
af4cccb8d9 Support mercury in 'ctags' as well
The previous lack of support was due to incorrect calls to 'make_tag'
in 'mercury_pr', which caused 'pfnote' to refrain from adding Mercury
tags to the list of recorded tags.

* lib-src/etags.c (mercury_pr): Pass the correct NAME and NAMELEN
arguments to 'make_tag'.

* test/manual/etags/CTAGS.good: Adjust to the above change.
2021-06-10 16:57:03 +03:00
Eli Zaretskii
6ef5760b10 Minor fixes for last change
* test/manual/etags/ETAGS.good_1:
* test/manual/etags/ETAGS.good_2:
* test/manual/etags/ETAGS.good_3:
* test/manual/etags/ETAGS.good_4:
* test/manual/etags/ETAGS.good_5:
* test/manual/etags/ETAGS.good_6: Adapt to added Mercury support.

* lib-src/etags.c (find_entries, test_objc_is_mercury):
* etc/NEWS: Fix punctuation and typos in last change.
2021-06-06 12:44:49 +03:00
Fabrice Nicol
5a8a5a990a Add support for Mercury (https://mercurylang.org) in 'etags'
Tag declarations starting lines with ':-'.
By default, all declarations are tagged.  Optionally, first
predicate or functions in clauses can be tagged as in Prolog
support using '--declarations'.  (Bug#47408).
* lib-src/etags.c (test_objc_is_mercury, Mercury_functions)
(mercury_skip_comment,  mercury_decl, mercury_pr):
Implement Mercury support.  As Mercury and Objective-C have
the same file extension .m, a heuristic test tries to detect
the language.

* doc/man/etags.1: Document the change.  Add Mercury-specific
 behavior for '--declarations'.  This option tags first
predicates or functions in clauses in addition to declarations.
2021-06-06 12:29:29 +03:00
Yuuki Harano
e48372f8e5 Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-05-19 22:02:06 +09:00
Pierre-Antoine Rouby
ec870f8986 Add support for Rust in etags
* lib-src/etags.c (Rust_functions): New function to make tags for rust
files.
(Rust_help, Rust_suffixes): New constant.
* doc/emacs/maintaining.texi (Tag Syntax): Add Rust item.
* doc/man/etags.1: Add Rust (bug#46055).
2021-05-17 17:24:04 +02:00
Glenn Morris
aa354dd55b * lib-src/Makefile.in (clean): Tidy up seccomp-filter files. 2021-05-09 18:46:11 -07:00
Glenn Morris
305e4807a4 Base the "extraclean" Make rule on "maintainer-clean"
* Makefile.in (FIND_DELETE): New, set by configure.
(extraclean_dirs): Remove.
(extraclean): Make it just a small variation on maintainer-clean.
* admin/charsets/Makefile.in (extraclean):
* admin/grammars/Makefile.in (extraclean):
* admin/unidata/Makefile.in (extraclean):
* leim/Makefile.in (extraclean):
* lib-src/Makefile.in (extraclean):
* lisp/Makefile.in (extraclean):
* lwlib/Makefile.in (extraclean):
* nt/Makefile.in (extraclean):
* src/Makefile.in (extraclean): Remove target.
* lib/Makefile.in (extraclean): Merge into maintainer-clean.
2021-05-09 18:14:12 -07:00
Yuuki Harano
b302a551ab Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-04-25 15:30:05 +09:00
Philipp Stephani
aaf6b6bf80 Ensure that argument to 'verify' is a constant expression.
Casting NULL is not a constant expression (Bug#47951).

* lib-src/seccomp-filter.c (main): Turn check for null pointer
representation into a runtime assertion.
2021-04-22 16:11:10 +02:00
Philipp Stephani
27af0a3dc8 Seccomp filter: deal with arch_prctl(ARCH_CET_STATUS, ...).
The dynamic loader of GNU libc 2.28 uses this system call to
initialize CPU information, see
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/x86/cpu-features.c;hb=glibc-2.28#l28.
Simulating an older kernel by returning EINVAL should be the most
harmless rule here.

The ARCH_CET_STATUS symbol isn't yet exposed by the kernel headers;
see the FIXME at the top of
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/x86/include/asm/prctl.h;hb=glibc-2.28.

* lib-src/seccomp-filter.c (ARCH_CET_STATUS): Define if not
already present.  Inline the value because there doesn't seem to
be a header file exporting this constant yet.
(main): Make ARCH_CET_STATUS subfunction of arch_prctl return EINVAL.
2021-04-19 21:11:21 +02:00
Philipp Stephani
2822246b5d Fix Seccomp filter on CentOS 8.3 (Bug#47828).
* lib-src/seccomp-filter.c (main): mmap: Also allow MAP_SHARED.
2021-04-18 10:34:48 +02:00
Yuuki Harano
de46c7796e Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-04-18 15:30:29 +09:00
Philipp Stephani
104c5e3d57 * lib-src/seccomp-filter.c: Add missing headers. 2021-04-12 09:20:51 +02:00
Philipp Stephani
17d20bb3cb Generate Seccomp filters only if we have the necessary constants.
If we're missing SECCOMP_SET_MODE_FILTER, the seccomp-filter build
fails.  Reuse the existing HAVE_SECCOMP configuration variable, which
checks for these macros.

* configure.ac (HAVE_SECCOMP): Substitute in Makefile.in.
* lib-src/Makefile.in (HAVE_SECCOMP): New variable.
(SECCOMP_FILTER): Define only if HAVE_SECCOMP.
2021-04-12 09:15:59 +02:00
Philipp Stephani
c8d542fd59 Add a variant of the Seccomp filter file that allows 'execve'.
This is useful when starting Emacs with a Seccomp filter enabled,
e.g. using 'bwrap'.

* lib-src/seccomp-filter.c (main): Generate new Seccomp files.

* lib-src/Makefile.in (all)
(seccomp-filter.bpf seccomp-filter.pfc seccomp-filter-exec.bpf
seccomp-filter-exec.pfc): Generate new Seccomp files.

* .gitignore: Ignore new Seccomp files.

* test/src/emacs-tests.el (emacs-tests/bwrap/allows-stdout): New unit
test.
2021-04-11 21:19:09 +02:00
Philipp Stephani
cf0701eff0 * lib-src/seccomp-filter.c (main): Also allow O_NOFOLLOW. 2021-04-11 21:14:41 +02:00
Philipp Stephani
9a57897ea1 Don't attempt to generate Seccomp filter file in Linux < 4.14.
Only Linux 4.14 and later contain the required support for
SECCOMP_RET_KILL_PROCESS.

* lib-src/Makefile.in (SECCOMP_FILTER): Define only if we run at least
Linux 4.14.
2021-04-11 20:46:59 +02:00
Philipp Stephani
ea5ea09244 Seccomp filter: allow reading the current time (Bug#47708).
* lib-src/seccomp-filter.c (main): Allow reading the current time.
2021-04-11 19:50:45 +02:00
Philipp Stephani
725fc96b70 Use pkg-config to check for libseccomp.
We need at list version 2.4.0 of libseccomp for seccomp-filter.c to
build cleanly.

* configure.ac: Use pkg-config to check for libseccomp.
* lib-src/Makefile.in (HAVE_LIBSECCOMP, LIBSECCOMP_LIBS)
(LIBSECCOMP_CFLAGS): New variables.
(SECCOMP_FILTER, seccomp-filter$(EXEEXT)): Use them.
2021-04-11 16:50:29 +02:00
Philipp Stephani
d06c54db1b Remove SCMP_FLTATR_CTL_LOG attribute from Seccomp filter.
Whether or not we log failing syscalls isn't security-critical, and we
shouldn't care.

* lib-src/seccomp-filter.c (main): Remove log attribute.
2021-04-11 16:41:44 +02:00
Philipp Stephani
9dc26d4a8a Only attempt to generate seccomp filter files on x86-64 systems.
The seccomp filters are always architecture-specific, and
seccomp-filter.c right now only supports x86-64.

* lib-src/Makefile.in (SECCOMP_FILTER): New variable.
(DONT_INSTALL, all, seccomp-filter$(EXEEXT)): Use it.
2021-04-11 16:25:09 +02:00
Philipp Stephani
5537836288 * lib-src/seccomp-filter.c: Print trailing newline. 2021-04-11 16:03:08 +02:00
Glenn Morris
81ffc43383 ; Fix copyright years 2021-04-10 12:24:09 -07:00
Philipp Stephani
1060289f51 Add a helper binary to create a basic Secure Computing filter.
The binary uses the 'seccomp' helper library.  The library isn't
needed to load the generated Secure Computing filter.

* configure.ac: Check for 'seccomp' header and library.

* lib-src/seccomp-filter.c: New helper binary to generate a generic
Secure Computing filter for GNU/Linux.

* lib-src/Makefile.in (DONT_INSTALL): Add 'seccomp-filter' helper
binary if possible.
(all): Add Secure Computing filter file if possible.
(seccomp-filter$(EXEEXT)): Compile helper binary.
(seccomp-filter.bpf seccomp-filter.pfc): Generate filter files.

* test/src/emacs-tests.el (emacs-tests/seccomp/allows-stdout)
(emacs-tests/seccomp/forbids-subprocess): New unit tests.

* test/Makefile.in (src/emacs-tests.log): Add dependency on the helper
binary.
2021-04-10 21:10:16 +02:00
Yuuki Harano
4dda6db3ab Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-03-08 21:20:54 +09:00
Glenn Morris
d632622b5a Simplify silent-rules build machinery
* src/verbose.mk.in: New file.
* configure.ac (AM_V, AM_DEFAULT_V): Remove output variables.
(src/verbose.mk): New output file.
* Makefile.in, admin/charsets/Makefile.in:
* admin/grammars/Makefile.in, admin/unidata/Makefile.in:
* doc/emacs/Makefile.in, doc/lispintro/Makefile.in:
* doc/lispref/Makefile.in, doc/misc/Makefile.in, leim/Makefile.in:
* lib-src/Makefile.in, lib/Makefile.in, lisp/Makefile.in:
* lwlib/Makefile.in, nt/Makefile.in, oldXMenu/Makefile.in:
* src/Makefile.in, src/verbose.mk.in, test/Makefile.in:
Include src/verbose.mk rather than repeatedly defining AM_V_at etc.
2021-03-06 16:28:46 -08:00
Yuuki Harano
44f7f57c68 Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk 2021-01-03 16:33:29 +09:00
Paul Eggert
9076a631fe Port to Solaris 10
* configure.ac: Instead of AC_CHECK_HEADER, use AC_COMPILE_IFELSE
with X11/Intrinsic.h when checking for X11/extensions/Xrender.h.
This suppresses a bogus "report a bug to bug-gnu-emacs" diagnostic
from 'configure' in Solaris 10.
(SETUP_SLAVE_PTY): Adjust to recent renaming of forkin to
std_in in callproc.c.  Needed on Solaris and Unixware.
* lib-src/Makefile.in (LIB_GETRANDOM, LIBS_ETAGS): New vars,
needed because on Solaris 10 the Gnulib tempname module now needs
the -lrt library for clock_gettime.  Throw in the LIB_GETRANDOM
stuff too while we’re at it; from getrandom.m4 it seems to be
needed for MingW.
(LIBS_MOVE, etags_libs): Use them.
* src/callproc.c [SETUP_SLAVE_PTY]: Include sys/stream.h
and sys/stropts.h, for SETUP_SLAVE_PTY’s definiens.
* src/process.c [NEED_BSDTTY]: Don’t include bsdtty.h; hasn’t been
needed in years.
[USG5_4]: Don’t include sys/stream.h or sys/stropts.h; these
directives havbe been moved to callproc.c because the only use of
SETUP_SLAVE_PTY is there now.
2021-01-01 12:58:17 -08:00