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Launch emacs 2. M-x term, RET 3. Error is written in buffer *terminal*: Process terminal exited abnormally with code 127 When I first started using emacs on android I assumed this was normal and immediately jumped to using emacs with termux. However, a number of built-in packages (term, tramp, etc) assume that /system/bin/sh (or other programs) are executable. I'm guessing this is some change in security on Android's part, but it's unclear to me the exact issue. I've tested this on my phone and in an emulator. I acquired the package for this test from f-droid. For what it is worth, /system/bin/sh can be called from termux on Android 15+, so there must be some way to get it to work. In GNU Emacs 30.1 (build 1, aarch64-unknown-linux-android22) of 2025-02-27 built on bookworm Repository revision: 8ac894e2246f25d2a2a97d866b10e6e0b0fede5a Repository branch: HEAD Windowing system distributor 'Google', version 35.0.0 System Description: google/sdk_gphone64_x86_64/emu64xa:15/AE3A.240806.043/12960925:userdebug/dev-keys Configured using: 'configure --with-png=yes --with-webp=yes --with-gif=yes --with-jpeg=yes --with-xml2=yes --with-sqlite3=yes --with-gnutls=yes --with-tiff=yes --with-selinux=yes --with-modules=yes --with-tree-sitter=yes --with-imagemagick=no --with-lcms2=yes --with-mailutils= --with-pop=no-by-default --with-harfbuzz=yes --with-threads=yes --with-rsvg=yes --enable-check-lisp-object-type= 'CFLAGS= -Werror=implicit-function-declaration'' Configured features: GIF GMP GNUTLS HARFBUZZ JPEG LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP THREADS TIFF TREE_SITTER WEBP ZLIB Important settings: value of $LANG: en_US.utf8 locale-coding-system: utf-8-unix Major mode: Fundamental Minor modes in effect: tooltip-mode: t global-eldoc-mode: t show-paren-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t minibuffer-regexp-mode: t buffer-read-only: t line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message mailcap yank-media puny dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util text-property-search time-date mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils term disp-table shell pcomplete ehelp comint subr-x ansi-osc ansi-color ring rmc iso-transl tooltip cus-start cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel android-win term/common-win touch-screen ls-lisp tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads inotify android multi-tty move-toolbar make-network-process emacs) Memory information: ((conses 16 52478 20929) (symbols 48 6261 0) (strings 32 15983 2245) (string-bytes 1 365002) (vectors 16 11628) (vector-slots 8 122476 10946) (floats 8 27 2) (intervals 56 803 23) (buffers 992 14)) From debbugs-submit-bounces@debbugs.gnu.org Tue Jul 29 07:14:04 2025 Received: (at 79120) by debbugs.gnu.org; 29 Jul 2025 11:14:04 +0000 Received: from localhost ([127.0.0.1]:60859 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ugiHT-0005AX-Pl for submit@debbugs.gnu.org; Tue, 29 Jul 2025 07:14:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55492) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1ugiHR-00059X-5w for 79120@debbugs.gnu.org; Tue, 29 Jul 2025 07:14:02 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ugiHL-0001VN-QQ; Tue, 29 Jul 2025 07:13:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=Mq/zcC1jZglicen4TvOHHms/kbW5auLE88YPrqAw27k=; b=JF+JUUDLt23a CTHkQHEsKF2WLWAWeBig12wYUIz5YwHTBmzlBK+njO0DYj8N6U4h+8srSrB4tsGl13DhC7qMqnFji DN2g5NAT4dzoy4UIHlGQchO2RbUvGWk3NRP2pRK5CAyTTCwJh71tSvUfzdB1efFx2vzGsBeH7RzQr yLiHyeaR7tLvsqxUK+gq9mhgskObhJj76RRLVBy6T6Dkg1uN80bKi4lgcgYJoA+A8aQDXmWnb4A/X Lx5iYy33YC+gvdHFq/M2P+JgYGEIXocjLW6R5BSv3lVJfUrEDe56sfGiHpQXnqzE3ZkcggnlHaYRs 9ag6LoXZZ2PFQq3YuEQnEA==; Date: Tue, 29 Jul 2025 14:13:52 +0300 Message-Id: <86tt2vw8pb.fsf@gnu.org> From: Eli Zaretskii To: Theia , Po Lu , waylandthrowaway@gmail.com In-Reply-To: (message from Theia on Mon, 28 Jul 2025 13:16:15 -0700) Subject: Re: bug#79120: 30.1; Emacs android can't execute programs in /system/bin (127) References: X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 79120 Cc: 79120@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) > From: Theia > Date: Mon, 28 Jul 2025 13:16:15 -0700 > > With a fresh app install on Android 15+: > 1. Launch emacs > 2. M-x term, RET > 3. Error is written in buffer *terminal*: > > Process terminal exited abnormally with code 127 > > When I first started using emacs on android I assumed this was normal > and immediately jumped to using emacs with termux. However, a number > of built-in packages (term, tramp, etc) assume that /system/bin/sh (or > other programs) are executable. I'm guessing this is some change in > security on Android's part, but it's unclear to me the exact issue. > > I've tested this on my phone and in an emulator. I acquired the package > for this test from f-droid. > > For what it is worth, /system/bin/sh can be called from termux on > Android 15+, so there must be some way to get it to work. Po Lu, could you perhaps look into this? 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Hermes SMTP Server) with ESMTPA ID 9f09d41581c14b252cdbae514c95d47c; Fri, 08 Aug 2025 06:12:40 +0000 (UTC) From: Po Lu To: Eli Zaretskii Subject: Re: bug#79120: 30.1; Emacs android can't execute programs in /system/bin (127) In-Reply-To: <86tt2vw8pb.fsf@gnu.org> References: <86tt2vw8pb.fsf@gnu.org> Date: Fri, 08 Aug 2025 14:12:36 +0800 Message-ID: <87wm7e8hpn.fsf@yahoo.com> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.24260 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 1339 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 79120 Cc: 79120@debbugs.gnu.org, Theia , waylandthrowaway@gmail.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.0 (-) Eli Zaretskii writes: >> From: Theia >> Date: Mon, 28 Jul 2025 13:16:15 -0700 >> >> With a fresh app install on Android 15+: >> 1. Launch emacs >> 2. M-x term, RET >> 3. Error is written in buffer *terminal*: >> >> Process terminal exited abnormally with code 127 >> >> When I first started using emacs on android I assumed this was normal >> and immediately jumped to using emacs with termux. However, a number >> of built-in packages (term, tramp, etc) assume that /system/bin/sh (or >> other programs) are executable. I'm guessing this is some change in >> security on Android's part, but it's unclear to me the exact issue. >> >> I've tested this on my phone and in an emulator. I acquired the package >> for this test from f-droid. >> >> For what it is worth, /system/bin/sh can be called from termux on >> Android 15+, so there must be some way to get it to work. > > Po Lu, could you perhaps look into this? Theia, could you test a build from the Emacs 31 branch, where the executable loader has been adapted to the version of the runtime link editor included in Android 15 and 16? If the issue is not present there, I shall backport it to Emacs 30 hopefully with plenty of time to spare till the next release. https://sourceforge.net/projects/android-ports-for-gnu-emacs/files