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GET /api/patches/2202501/?format=api
{ "id": 2202501, "url": "http://patchwork.ozlabs.org/api/patches/2202501/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/patch/20260227183851.2113417-3-adhemerval.zanella@linaro.org/", "project": { "id": 41, "url": "http://patchwork.ozlabs.org/api/projects/41/?format=api", "name": "GNU C Library", "link_name": "glibc", "list_id": "libc-alpha.sourceware.org", "list_email": "libc-alpha@sourceware.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260227183851.2113417-3-adhemerval.zanella@linaro.org>", "list_archive_url": null, "date": "2026-02-27T18:37:44", "name": "[v7,2/5] nptl: Add __raise_direct", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "805359aa837db011527557a6553ea13f3559ba56", "submitter": { "id": 66065, "url": "http://patchwork.ozlabs.org/api/people/66065/?format=api", "name": "Adhemerval Zanella", "email": "adhemerval.zanella@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/glibc/patch/20260227183851.2113417-3-adhemerval.zanella@linaro.org/mbox/", "series": [ { "id": 493795, "url": "http://patchwork.ozlabs.org/api/series/493795/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/list/?series=493795", "date": "2026-02-27T18:37:42", "name": "elf: Allow RPATH/RUNPATH for static-pie (BZ 33326)", "version": 7, "mbox": "http://patchwork.ozlabs.org/series/493795/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2202501/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2202501/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "libc-alpha@sourceware.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "libc-alpha@sourceware.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=M4YhhxAC;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org\n (client-ip=2620:52:6:3111::32; helo=vm01.sourceware.org;\n envelope-from=libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org;\n receiver=patchwork.ozlabs.org)", "sourceware.org;\n\tdkim=pass (2048-bit key,\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=M4YhhxAC", "sourceware.org;\n dmarc=pass (p=none dis=none) header.from=linaro.org", "sourceware.org; spf=pass smtp.mailfrom=linaro.org", "server2.sourceware.org;\n arc=none smtp.remote-ip=2607:f8b0:4864:20::a29" ], "Received": [ "from vm01.sourceware.org (vm01.sourceware.org\n [IPv6:2620:52:6:3111::32])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fMxvG2DYnz1xxV\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 28 Feb 2026 05:39:38 +1100 (AEDT)", "from vm01.sourceware.org (localhost [127.0.0.1])\n\tby sourceware.org (Postfix) with ESMTP id 54ADE4BA23FC\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 27 Feb 2026 18:39:36 +0000 (GMT)", "from mail-vk1-xa29.google.com (mail-vk1-xa29.google.com\n [IPv6:2607:f8b0:4864:20::a29])\n by sourceware.org (Postfix) with ESMTPS id 63C924BA23E8\n for <libc-alpha@sourceware.org>; Fri, 27 Feb 2026 18:39:03 +0000 (GMT)", "by mail-vk1-xa29.google.com with SMTP id\n 71dfb90a1353d-56a87098868so864396e0c.1\n for <libc-alpha@sourceware.org>; Fri, 27 Feb 2026 10:39:03 -0800 (PST)", "from ubuntu-vm.. 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"<20260227183851.2113417-1-adhemerval.zanella@linaro.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libc-alpha@sourceware.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Libc-alpha mailing list <libc-alpha.sourceware.org>", "List-Unsubscribe": "<https://sourceware.org/mailman/options/libc-alpha>,\n <mailto:libc-alpha-request@sourceware.org?subject=unsubscribe>", "List-Archive": "<https://sourceware.org/pipermail/libc-alpha/>", "List-Post": "<mailto:libc-alpha@sourceware.org>", "List-Help": "<mailto:libc-alpha-request@sourceware.org?subject=help>", "List-Subscribe": "<https://sourceware.org/mailman/listinfo/libc-alpha>,\n <mailto:libc-alpha-request@sourceware.org?subject=subscribe>", "Errors-To": "libc-alpha-bounces~incoming=patchwork.ozlabs.org@sourceware.org" }, "content": "The function sends a signal to current thread using raw syscalls.\n---\n include/signal.h | 3 +++\n nptl/pthread_kill.c | 21 +++++++------------\n signal/raise.c | 6 ++++++\n sysdeps/htl/raise.c | 3 +++\n sysdeps/posix/raise.c | 2 +-\n sysdeps/unix/sysv/linux/Makefile | 4 ++++\n sysdeps/unix/sysv/linux/raise_direct.c | 29 ++++++++++++++++++++++++++\n 7 files changed, 53 insertions(+), 15 deletions(-)\n create mode 100644 sysdeps/unix/sysv/linux/raise_direct.c", "diff": "diff --git a/include/signal.h b/include/signal.h\nindex 73f18dddd7..099d721514 100644\n--- a/include/signal.h\n+++ b/include/signal.h\n@@ -65,6 +65,9 @@ extern int __xpg_sigpause (int sig);\n /* Allocate real-time signal with highest/lowest available priority. */\n extern int __libc_allocate_rtsig (int __high);\n \n+/* Similar to raise, but does not set errno. */\n+extern int __raise_direct (int signo) attribute_hidden;\n+\n # if IS_IN (rtld)\n extern __typeof (__sigaction) __sigaction attribute_hidden;\n extern __typeof (__libc_sigaction) __libc_sigaction attribute_hidden;\ndiff --git a/nptl/pthread_kill.c b/nptl/pthread_kill.c\nindex 221689e36a..bc038e9824 100644\n--- a/nptl/pthread_kill.c\n+++ b/nptl/pthread_kill.c\n@@ -29,20 +29,13 @@ __pthread_kill_implementation (pthread_t threadid, int signo, int no_tid)\n {\n struct pthread *pd = (struct pthread *) threadid;\n if (pd == THREAD_SELF)\n- {\n- /* Use the actual TID from the kernel, so that it refers to the\n- current thread even if called after vfork. There is no\n- signal blocking in this case, so that the signal is delivered\n- immediately, before __pthread_kill_internal returns: a signal\n- sent to the thread itself needs to be delivered\n- synchronously. (It is unclear if Linux guarantees the\n- delivery of all pending signals after unblocking in the code\n- below. POSIX only guarantees delivery of a single signal,\n- which may not be the right one.) */\n- pid_t tid = INTERNAL_SYSCALL_CALL (gettid);\n- int ret = INTERNAL_SYSCALL_CALL (tgkill, __getpid (), tid, signo);\n- return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;\n- }\n+ /* There is no signal blocking in this case, so that the signal is\n+ delivered immediately, before __pthread_kill_internal returns: a signal\n+ sent to the thread itself needs to be delivered synchronously. (It is\n+ unclear whether Linux guarantees the delivery of all pending signals\n+ after unblocking in the code below. POSIX only guarantees delivery\n+ of a single signal, which may not be the right one.) */\n+ return __raise_direct (signo);\n \n /* Block all signals, as required by pd->exit_lock. */\n internal_sigset_t old_mask;\ndiff --git a/signal/raise.c b/signal/raise.c\nindex b6f5cbee4e..13a2896549 100644\n--- a/signal/raise.c\n+++ b/signal/raise.c\n@@ -27,5 +27,11 @@ raise (int sig)\n }\n weak_alias (raise, gsignal)\n \n+int\n+raise_direct (int sig)\n+{\n+ return -1;\n+}\n+\n stub_warning (raise)\n stub_warning (gsignal)\ndiff --git a/sysdeps/htl/raise.c b/sysdeps/htl/raise.c\nindex 3200f91634..9c8bccc5a9 100644\n--- a/sysdeps/htl/raise.c\n+++ b/sysdeps/htl/raise.c\n@@ -51,6 +51,9 @@ raise (int signo)\n else\n return __kill (__getpid (), signo);\n }\n+/* TODO: __raise_direct should not change errno and work during process\n+ startup. */\n+weak_alias (raise, __raise_direct)\n \n libc_hidden_def (raise)\n weak_alias (raise, gsignal)\ndiff --git a/sysdeps/posix/raise.c b/sysdeps/posix/raise.c\nindex 8abe8d4cad..cf0770f1c8 100644\n--- a/sysdeps/posix/raise.c\n+++ b/sysdeps/posix/raise.c\n@@ -23,7 +23,7 @@\n int\n raise (int sig)\n {\n- int ret = __pthread_kill (__pthread_self (), sig);\n+ int ret = __raise_direct (sig);\n if (ret != 0)\n {\n __set_errno (ret);\ndiff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile\nindex c6bd97abf1..8797c5c9b3 100644\n--- a/sysdeps/unix/sysv/linux/Makefile\n+++ b/sysdeps/unix/sysv/linux/Makefile\n@@ -455,6 +455,10 @@ tests += \\\n endif\n \n ifeq ($(subdir),signal)\n+sysdep_routines += \\\n+ raise_direct \\\n+ # sysdep_routines\n+\n tests-special += \\\n $(objpfx)tst-signal-numbers.out \\\n # tests-special\ndiff --git a/sysdeps/unix/sysv/linux/raise_direct.c b/sysdeps/unix/sysv/linux/raise_direct.c\nnew file mode 100644\nindex 0000000000..d38bd10817\n--- /dev/null\n+++ b/sysdeps/unix/sysv/linux/raise_direct.c\n@@ -0,0 +1,29 @@\n+/* Internal function to send a signal to itself. Linux version.\n+ Copyright (C) 2026 Free Software Foundation, Inc.\n+ This file is part of the GNU C Library.\n+\n+ The GNU C Library is free software; you can redistribute it and/or\n+ modify it under the terms of the GNU Lesser General Public\n+ License as published by the Free Software Foundation; either\n+ version 2.1 of the License, or (at your option) any later version.\n+\n+ The GNU C Library is distributed in the hope that it will be useful,\n+ but WITHOUT ANY WARRANTY; without even the implied warranty of\n+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n+ Lesser General Public License for more details.\n+\n+ You should have received a copy of the GNU Lesser General Public\n+ License along with the GNU C Library; if not, see\n+ <https://www.gnu.org/licenses/>. */\n+\n+#include <sysdep.h>\n+#include <pthread.h>\n+#include <unistd.h>\n+\n+int\n+__raise_direct (int signo)\n+{\n+ pid_t tid = INTERNAL_SYSCALL_CALL (gettid);\n+ int ret = INTERNAL_SYSCALL_CALL (tkill, tid, signo);\n+ return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;\n+}\n", "prefixes": [ "v7", "2/5" ] }