From patchwork Fri Feb 21 20:28:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lirong Yuan X-Patchwork-Id: 1242331 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20161025 header.b=tKADRVyn; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48PNNR11lRz9sNg for ; Sat, 22 Feb 2020 07:29:25 +1100 (AEDT) Received: from localhost ([::1]:35932 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5EvK-0002f2-8L for incoming@patchwork.ozlabs.org; Fri, 21 Feb 2020 15:29:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:52701) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <3jT1QXgYKCkI2yer3mksskpi.gsquiqy-hiziprsrkry.svk@flex--yuanzi.bounces.google.com>) id 1j5Ev2-0002ej-DN for qemu-devel@nongnu.org; Fri, 21 Feb 2020 15:29:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <3jT1QXgYKCkI2yer3mksskpi.gsquiqy-hiziprsrkry.svk@flex--yuanzi.bounces.google.com>) id 1j5Ev1-0001tC-EV for qemu-devel@nongnu.org; Fri, 21 Feb 2020 15:29:04 -0500 Received: from mail-pl1-x64a.google.com ([2607:f8b0:4864:20::64a]:57030) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from <3jT1QXgYKCkI2yer3mksskpi.gsquiqy-hiziprsrkry.svk@flex--yuanzi.bounces.google.com>) id 1j5Ev1-0001qy-9g for qemu-devel@nongnu.org; Fri, 21 Feb 2020 15:29:03 -0500 Received: by mail-pl1-x64a.google.com with SMTP id 91so1753467plf.23 for ; Fri, 21 Feb 2020 12:29:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=vmCGU9QmZGdVmAO0sJELwZM+WuL2wGHuNd0ACEynasA=; b=tKADRVynkJZ6Nwr9JX4SPWXXm+gRY6eeDKHardg/N+ZHAJDyvZwK2DmcB17XfEeQ12 N/wo7Fj6wKEHgfx/mCP2HjGQu+1CYbIeeWq/l9vKZSEm7JpT2EivSVKITB4o1ftZ9kXj gxwIzHjfPuc6xMuRacCab0M5dhk+nYdLSiXH8q46Q5gj/DDO4v+YlSWNSeEHFCUZ61q8 aCg+sL1nPY8PnfsD6pz74y5bysx1dacir4EnV1VGa+aEcYieyv2mXyCOEXhEug2G/eCE PnHF2yigVDK2xBl1OR0AQkEnHafB83xQ2ssHzoMAelIzu2r7TT48IkEO9Dc1bnssgeJ+ XvZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=vmCGU9QmZGdVmAO0sJELwZM+WuL2wGHuNd0ACEynasA=; b=CDCQ1dTZWC7R2irSPC0fRnb2d9FuW7nl3KxX+78Hc6NjC6tpACMihN3hrKGAOjLC8h cBvkYpyckiy99eRriNoGCYqvGQMasTax9GAS8xIirswrc8+dE+sS642GkMv6ZaZGq56A Tdi+Kxf+LYfY/1LJytqevkHBVyu38h8V52ewPDPicPyccnEk6LGzw/c89+8JtSjWmlZm TeolAsVmCtFVfbb/0ui2NXtZStVAcrG4sbosCVBNSd0LlRsKqb02mirj4dfER1PRY+H+ mkve5KlI6I5OzQCK81+Te3J+ZdJ/UDN08tfjYsi+PDLSH+qsOqBr7gORjjpFjk8xxVEz 6CFA== X-Gm-Message-State: APjAAAWa2BYl5FL0IORAsLKyCxZV1hcFxbZka4D3ttlCPr269A95XUPx v6rKqDGmXA3nj0VDSTC4SD4TACC5QH9emhBd/FicDRgb0vJr2JVdI0doLRzLIBtykanHNhQTF3o gkiZkCByDj1R8MyZUfrW8AEjMhtiE5S7qhJSpSYL4aOZxKVuONPDYOG97dcIQ X-Google-Smtp-Source: APXvYqzjKiIZCAUDVef4jNgzi8UvFJRgtdkSwcXyEl699oJxpYvbxv8mTqf50+TkHnYIE9ejQVwd+y+RAh8= X-Received: by 2002:a63:2842:: with SMTP id o63mr41124550pgo.317.1582316941485; Fri, 21 Feb 2020 12:29:01 -0800 (PST) Date: Fri, 21 Feb 2020 12:28:57 -0800 Message-Id: <20200221202857.126170-1-yuanzi@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.25.0.265.gbab2e86ba0-goog Subject: [PATCH] linux-user: Add AT_EXECFN and AT_EXECFD auxval From: Lirong Yuan To: qemu-devel@nongnu.org, qemu-trivial@nongnu.org Cc: Lirong Yuan , Riku Voipio , Laurent Vivier X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::64a X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This change adds the support for AT_EXECFN and AT_EXECFD auxval. Signed-off-by: Lirong Yuan --- linux-user/elfload.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index f3080a1635..7e0f3042f1 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1568,7 +1568,7 @@ struct exec ~(abi_ulong)(TARGET_ELF_EXEC_PAGESIZE-1)) #define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1)) -#define DLINFO_ITEMS 15 +#define DLINFO_ITEMS 17 static inline void memcpy_fromfs(void * to, const void * from, unsigned long n) { @@ -1888,11 +1888,14 @@ static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong s return sp; } -static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, +static abi_ulong create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, struct image_info *info, struct image_info *interp_info) { + abi_ulong p = bprm->p; + int argc = bprm->argc; + int envc = bprm->envc; abi_ulong sp; abi_ulong u_argc, u_argv, u_envp, u_auxv; int size; @@ -2032,6 +2035,8 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK)); NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes); NEW_AUX_ENT(AT_SECURE, (abi_ulong) qemu_getauxval(AT_SECURE)); + NEW_AUX_ENT(AT_EXECFN, info->file_string); + NEW_AUX_ENT(AT_EXECFD, bprm->fd); #ifdef ELF_HWCAP2 NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2); @@ -2870,8 +2875,8 @@ int load_elf_binary(struct linux_binprm *bprm, struct image_info *info) #endif } - bprm->p = create_elf_tables(bprm->p, bprm->argc, bprm->envc, &elf_ex, - info, (elf_interpreter ? &interp_info : NULL)); + bprm->p = create_elf_tables(bprm, &elf_ex, info, + (elf_interpreter ? &interp_info : NULL)); info->start_stack = bprm->p; /* If we have an interpreter, set that as the program's entry point.