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2024-03-14* exec/trace.c (rpl_stpcpy): Replace stpcpy if absent.Po Lu
2024-03-14Improve /proc/self/exe substitution on AndroidPo Lu
* exec/configure.ac (USER_SWORD): New macro. * exec/exec.c (format_pid): Export this function. * exec/exec.h: * exec/trace.c (canon_path): New function. (handle_readlinkat, handle_openat): Test complete file name against /proc/self/exe, and further check for /proc/pid/exe.
2024-01-29* exec/configure.ac (OPENAT_SYSCALL): Define on MIPS.Po Lu
2024-01-27Intercept calls to `openat' under AndroidPo Lu
* exec/configure.ac (OPEN_SYSCALL, OPENAT_SYSCALL): Define new macros. * exec/exec.h (struct exec_tracee): New field `sp'. * exec/trace.c (handle_openat): New function. (process_system_call): If handle_openat executes successfully, save the unmodified stack pointer within the tracee structure to be restored once the system call completes.
2024-01-21; * exec/Makefile.in: Correct typo.Po Lu
2024-01-21; * exec/Makefile.in (extraclean): Remove standard files.Po Lu
2024-01-20Fix autogen.sh’s spurious ‘git diff’ outputPaul Eggert
Problem reported by Gerd Möllmann (Bug#68464). * .gitignore: Ignore files in exec that are now copied from build-aux. * admin/merge-gnulib (avoided_flags): Instead of clearing autom4te.cache here ... * autogen.sh (do_git): ... clear it here. Use config.guess, config.sub and install-sh from the Emacs repository, as they are more likely to be up to date. This avoids unnecessary differences among different builders, and avoids unnecessary ‘git diff’ output after autogen.sh. Also, copy these files from build-aux to exec since there should be no difference between the two copies. * exec/config.guess, exec/config.sub, exec/install-sh: Remove from repository, as autogen.sh now copies them from build-aux.
2024-01-02; Update copyright years in more filesPo Lu
2024-01-02; Add 2024 to copyright yearsPo Lu
2023-12-10; Use ?c instead of integer in local variablesStefan Kangas
* exec/loader-armeabi.s (timespec): * exec/loader-mips64el.s (__start): * exec/loader-mipsel.s (__start): Use ?c instead of integer in local variables.
2023-12-10; Fix typosStefan Kangas
2023-11-26; Update Autoconf auxiliaries in execPo Lu
* exec/config.guess: * exec/config.sub: Update configury files.
2023-09-18Correct build on systems without PAGE_MASKPo Lu
* exec/exec.c (write_load_command) <PAGE_MASK, PAGE_SIZE>: Uniformly define even if !HAVE_GETPAGESIZE.
2023-09-18Correct crash in child processes under armeabi AndroidPo Lu
* exec/trace.c (process_system_call) <READLINKAT_SYSCALL>: Examine tracee->waiting_for_syscall and avoid rewriting user arguments if a system call is presently being executed by the kernel. Reported by Romário Rios <romariorios@protonmail.com>.
2023-08-12Avoid stpncpyPaul Eggert
It’s not worth the porting hassle, and as the glibc manual says, “this function is generally a poor choice for processing strings”. * admin/merge-gnulib (GNULIB_MODULES): Remove stpncpy. * exec/configure.ac: Do not check for stpncpy. * exec/exec.c (rpl_stpncpy, stpncpy): Remove this replacement. (exec_0): Properly clear buffer1. Use memcpy instead of stpncpy to add the trailing name. This code is clearly still suboptimal but efficiency is not that important here and I tried to minimize the change. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
2023-08-12Merge from origin/emacs-29Eli Zaretskii
4767f5eaeed Better fix for bug#65156 dd1d8414b33 Fix insert-file-contents with pipes and /dev/stdin 50649a6d1a2 ; * etc/PROBLEMS: Fix wording. f0dda682ffb ; * etc/NEWS.28: Add deletion of levents.el. f4acae842c0 Fix bug#65042 e1874c4e8bf * configure.ac (HAVE_TREE_SITTER): Set NEED_DYNLIB=yes (b... ef8838c3a5f * etc/NEWS: Mention tramp-show-ad-hoc-proxies. 495bee253fc * test/lisp/net/tramp-tests.el (tramp-test42-utf8): Skip ... de1effd73b4 ; Fix last change 7c7966862bc * test/lisp/net/tramp-tests.el (tramp-test10-write-region... 16205e8db65 ; Improve help-echo in package.el a95e7006989 ; Filter packages available for upgrade via menu bar adff72dd1d2 Fix reverting Rmail buffers
2023-08-07Stop tracking exec/config.h.inPo Lu
* .gitignore: Add exec/config.h.in. * exec/config.h.in: Remove from Git.
2023-07-20Update Android portPo Lu
* exec/trace.c (handle_readlinkat): Adjust commentary to match behavior. * src/android.c (android_get_keysym_name): NULL terminate *name_return.
2023-06-27; * exec/loader-mips64el.s (rest_of_exec): Fix typo in comment.Po Lu
2023-06-19; * exec/Makefile.in (clean): Add `exec1'.Po Lu
2023-05-31Update Android portPo Lu
* exec/exec.c (insert_args): New argument `arg3'. Replace argv[1] with that argument. (exec_0): Pass file name of script to `insert_args'.
2023-05-23; * exec/exec.c (exec_0): Use strcpy.Po Lu
2023-05-20Remove arbitrary process count limitPo Lu
* exec/trace.c (handle_clone_prepare): (handle_clone): When !REENTRANT, use malloc to allocate tracees after running out of static ones.
2023-05-05Fix execution of /proc/self/exe within child processesPo Lu
* exec/exec.h (struct exec_tracee): New field `new_child'. Also, make `waiting_for_syscall' a bitfield. * exec/trace.c (PTRACE_GETEVENTMSG): New declaration. (MAX_TRACEES): Bump to 4096. (handle_clone_prepare): New function. (handle_clone): If required, set `new_child' and wait for a ptrace event describing the parent to arrive. (after_fork): Clear new field. (exec_waitpid): Upon a ptrace event describing a clone, create the child's tracee if it doesn't already exist. Otherwise, copy over the parent's cmdline and start running it.
2023-05-05Update Android portPo Lu
* doc/emacs/android.texi (Android Environment): Document lossage with SIGSTOP. * exec/exec.c (exec_0): Check X_OK on file being opened. Also handle /proc/self/exe.
2023-05-05Update Android portPo Lu
* exec/trace.c (SYS_SECCOMP): Define when not present.
2023-05-04Update Android portPo Lu
* exec/trace.c (check_signal): New function. (handle_exec, process_system_call): Handle signal-delivery-stop while waiting synchronously for syscall completion.
2023-05-03Update Android portPo Lu
* exec/config.h.in: Autoheader. * exec/configure.ac: Check for siginfo_t.si_syscall. * exec/trace.c (exec_waitpid): If SIGSYS is received, and caused by seccomp, drop it should the call number be the invalid system call used by Emacs.
2023-05-03Update Android portPo Lu
* exec/config.h.in: Autoheader. * exec/configure.ac: Use system extensions. (HAVE_PROCESS_VM): Define if process_vm_readv and process_vm_writev are available. * exec/trace.c (read_memory, user_copy): Implement in terms of process_vm if possible.
2023-05-03Remove extra debugging codePo Lu
* exec/loader-mipsel.s (__start): Remove extraneous debugging code.
2023-05-03Update Android portPo Lu
* exec/Makefile.in: (.PHONY): Add `bootstrap-clean' and `extraclean'. (bootstrap-clean): New rule.
2023-05-02Update Android portPo Lu
* exec/config.h.in (__bool_true_false_are_defined): * exec/configure.ac (REENTRANT): New definition. (READLINKAT_SYSCALL, READLINK_SYSCALL): New defines. Set on all hosts. * exec/exec.c (MIN, MAX): Remove redundant declarations. Move to config.h. (exec_0): Copy name of executable into NAME when !REENTRANT. * exec/exec.h (struct exec_tracee): New struct `exec_file'. * exec/trace.c (remove_tracee, handle_exec, handle_readlinkat) (process_system_call, after_fork): Handle readlinkat system calls.
2023-05-02Fix ps name in Android subprocessesPo Lu
* exec/Makefile.in (.SUFFIXES): Include ., then `srcdir'. * exec/loader-aarch64.s (_start): * exec/loader-armeabi.s (_start): * exec/loader-mips64el.s (__start): * exec/loader-mipsel.s (__start): * exec/loader-x86.s (_start): * exec/loader-x86_64.s (_start): Get basename of opened exec file and make it the command name. Fix envp skipping on x86 and various leaks.
2023-05-02Port Android port to older Android systemsPo Lu
* exec/config.h.in: Autoheader. * exec/configure.ac: Check for declarations of stpcpy and stpncpy. * exec/exec.c (stpcpy, stpncpy): Use replacements if declarations are not present; this happens when a new Android NDK is building for an old version of Android.
2023-05-01Update Android portPo Lu
* exec/config.h.in: Update config.h.in. * exec/configure.ac: Check for stpcpy and stpncpy. * exec/exec.c (rpl_stpcpy, rpl_stpncpy): Define replacements when they are not present on the system. (process_program_header): Fill comment.
2023-05-01Fix cwd relative process execution on AndroidPo Lu
* exec/exec.c (format_pid): New function. (exec_0): Make cwd relative file names relative to /proc/pid/cwd. * exec/trace.c (handle_exec): Handle EINTR. (process_system_call): Report failure without clobbering x0.
2023-05-01Fix syscall error reporting on aarch64Po Lu
* exec/trace.c (process_system_call): Save and restore x0, x1 and x2 regs after replacing them with an invalid file descriptor.
2023-05-01Update Android portPo Lu
* Makefile.in (extraclean): Clean in exec as well. * configure.ac: Fix detection of absolute srcdir. Also, pass CFLAGS. * exec/Makefile.in: (.c.o): Add -I. so config.h can be found.:(.s.o): Don't create m4 temporary in srcdir. * exec/config-mips.m4.in (DADDI2, DADDI3): New macros. Define to substitute if as cannot assemble daddi. * exec/configure.ac (user_h): Look for user.h in asm/ as well. Use new user.h. Also look in ptrace.h on arm systems. Check if as supports daddi on mips64. * exec/exec.c (check_interpreter): Fix char signedness bug. * exec/loader-mips64el.s (__start): Use DADDI2 and DADDI3 for two- and 3-operand daddi. * exec/mipsel-user.h: Don't include sgidefs.h. * java/INSTALL: Document that m4 is now required. * src/android.c (android_rewrite_spawn_argv): Add missing NULL.
2023-05-01Work around system restrictions regarding execPo Lu
* doc/emacs/android.texi (Android Environment): Document `android-use-exec-loader'. * exec/exec1.c (main): Set program group of child process. * src/android.c (android_rewrite_spawn_argv): New function. * src/android.h: Update prototypes. * src/androidfns.c (syms_of_androidfns): New variable `android_use_exec_loader'. * src/callproc.c (emacs_spawn): Rewrite the argument vector to use exec1 if necessary.
2023-05-01Remove exec/configurePo Lu
* exec/configure: Remove file. * .gitignore: Add exec/configure.
2023-04-30Add helper binary `exec1'Po Lu
* .gitignore: New files. * Makefile.in (mostlyclean_dirs): Add libexec, if its Makefile exists. * autogen.sh (do_git): Autoreconf in exec as well. * configure.ac: Configure libexec on Android. * exec/Makefile.in: * exec/README: * exec/config-mips.m4.in: * exec/config.guess: * exec/config.h.in: * exec/config.sub: * exec/configure: * exec/configure.ac: * exec/deps.mk: * exec/exec.c (MIN, struct exec_open_command) (struct exec_map_command, struct exec_jump_command) (write_open_command, write_load_command, process_interpreter_1) (process_interpreter, process_program_header, insert_args) (exec_0): * exec/exec.h (_EXEC_H_, struct elf_header_32) (struct program_header_32, struct dt_entry_32) (struct elf_header_64, struct program_header_64) (struct dt_entry_64, struct exec_tracee): * exec/exec1.c (main): * exec/install-sh (scriptversion): * exec/loader-aarch64.s (_start): * exec/loader-armeabi.s (_start): * exec/loader-mips64el.s (__start): * exec/loader-mipsel.s (__start): * exec/loader-x86.s (_start): * exec/loader-x86_64.s (_start): * exec/mipsel-user.h (_MIPSEL_USER_H_): * exec/mipsfpu.c (MIPS_ABI_FP_ANY, fpu_reqs, valid_abi_p) (fp_mode_for_abi, cpu_supports_fr0_p, determine_fpu_mode): * exec/mipsfpu.h (_MIPSFPU_H_, FP_FR0): * exec/test.c (print_usage, main): * exec/trace.c (MAX_TRACEES, aarch64_set_regs, read_memory) (user_alloca, user_copy, remove_tracee, handle_clone) (syscall_trap_p, handle_exec, process_system_call, tracing_execve) (after_fork, find_tracee, exec_waitpid, exec_init): New files. * java/Makefile.in (CROSS_EXEC_BINS): Add exec1 and loader. ($(CROSS_EXEC_BINS) &): New target.
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