From patchwork Wed May 4 17:30:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 12838325 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 06451C433EF for ; Wed, 4 May 2022 17:32:13 +0000 (UTC) Received: from localhost ([::1]:39000 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nmIrD-00071L-WE for qemu-devel@archiver.kernel.org; Wed, 04 May 2022 13:32:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39818) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nmIpk-0004cR-Tv for qemu-devel@nongnu.org; Wed, 04 May 2022 13:30:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:26466) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nmIpi-00030N-Ci for qemu-devel@nongnu.org; Wed, 04 May 2022 13:30:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1651685437; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rOJ/LJ/5c/gMbrm+HulZCXhwL5UliLeDMjK7EhViaxs=; b=i4+6g1uQ8KxmDpshfx1hbXz6PdftizVjhh5TCrZ6Zs3sv9l1FXUKcZ6/vdHl8wuPlOW6cP sF9d2L2fTBwgrd2xJWOuCKb5iw1UuvCOTn0TLaYVDdt+RCw6X1RdD+LRonUDhGmqwcPJaJ qNuzlDgKg9CuAi3us31eGlquR9GL00k= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-54-QNHzpPgBOGStr-dvSTtBWA-1; Wed, 04 May 2022 13:30:34 -0400 X-MC-Unique: QNHzpPgBOGStr-dvSTtBWA-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 95A1B801E80; Wed, 4 May 2022 17:30:33 +0000 (UTC) Received: from localhost (unknown [10.39.208.46]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6B0EA4643C5; Wed, 4 May 2022 17:30:32 +0000 (UTC) From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Thomas Huth , Stefan Weil , Qiuhao Li , Laurent Vivier , Stefan Hajnoczi , Hanna Reitz , Kevin Wolf , Markus Armbruster , qemu-block@nongnu.org, Konstantin Kostiuk , Bandan Das , Michael Roth , Darren Kenny , Alexander Bulekov , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= Subject: [PATCH 01/16] include: move qemu_*_exec_dir() to cutils Date: Wed, 4 May 2022 21:30:10 +0400 Message-Id: <20220504173025.650167-2-marcandre.lureau@redhat.com> In-Reply-To: <20220504173025.650167-1-marcandre.lureau@redhat.com> References: <20220504173025.650167-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Marc-André Lureau The function is required by get_relocated_path() (already in cutils), and used by qemu-ga and may be generally useful. Signed-off-by: Marc-André Lureau --- include/qemu/cutils.h | 7 ++ include/qemu/osdep.h | 8 -- qemu-io.c | 1 + storage-daemon/qemu-storage-daemon.c | 1 + tests/qtest/fuzz/fuzz.c | 1 + util/cutils.c | 108 +++++++++++++++++++++++++++ util/oslib-posix.c | 81 -------------------- util/oslib-win32.c | 36 --------- 8 files changed, 118 insertions(+), 125 deletions(-) diff --git a/include/qemu/cutils.h b/include/qemu/cutils.h index 5c6572d44422..40e10e19a7ed 100644 --- a/include/qemu/cutils.h +++ b/include/qemu/cutils.h @@ -193,6 +193,13 @@ int uleb128_decode_small(const uint8_t *in, uint32_t *n); */ int qemu_pstrcmp0(const char **str1, const char **str2); +/* Find program directory, and save it for later usage with + * qemu_get_exec_dir(). + * Try OS specific API first, if not working, parse from argv0. */ +void qemu_init_exec_dir(const char *argv0); + +/* Get the saved exec dir. */ +const char *qemu_get_exec_dir(void); /** * get_relocated_path: diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index 1c1e7eca9898..67cc4654166b 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -557,14 +557,6 @@ void qemu_set_cloexec(int fd); */ char *qemu_get_local_state_dir(void); -/* Find program directory, and save it for later usage with - * qemu_get_exec_dir(). - * Try OS specific API first, if not working, parse from argv0. */ -void qemu_init_exec_dir(const char *argv0); - -/* Get the saved exec dir. */ -const char *qemu_get_exec_dir(void); - /** * qemu_getauxval: * @type: the auxiliary vector key to lookup diff --git a/qemu-io.c b/qemu-io.c index d70d3dd4fde5..2bd7bfb65073 100644 --- a/qemu-io.c +++ b/qemu-io.c @@ -16,6 +16,7 @@ #endif #include "qemu/help-texts.h" +#include "qemu/cutils.h" #include "qapi/error.h" #include "qemu-io.h" #include "qemu/error-report.h" diff --git a/storage-daemon/qemu-storage-daemon.c b/storage-daemon/qemu-storage-daemon.c index 9b8b17f52e48..c104817cdddc 100644 --- a/storage-daemon/qemu-storage-daemon.c +++ b/storage-daemon/qemu-storage-daemon.c @@ -44,6 +44,7 @@ #include "qemu/help-texts.h" #include "qemu-version.h" +#include "qemu/cutils.h" #include "qemu/config-file.h" #include "qemu/error-report.h" #include "qemu/help_option.h" diff --git a/tests/qtest/fuzz/fuzz.c b/tests/qtest/fuzz/fuzz.c index a7a5e14fa3bc..0ad4ba9e94dc 100644 --- a/tests/qtest/fuzz/fuzz.c +++ b/tests/qtest/fuzz/fuzz.c @@ -15,6 +15,7 @@ #include +#include "qemu/cutils.h" #include "qemu/datadir.h" #include "sysemu/sysemu.h" #include "sysemu/qtest.h" diff --git a/util/cutils.c b/util/cutils.c index b2777210e7da..6cc7cc8cde99 100644 --- a/util/cutils.c +++ b/util/cutils.c @@ -931,6 +931,114 @@ static inline const char *next_component(const char *dir, int *p_len) return dir; } +static const char *exec_dir; + +void qemu_init_exec_dir(const char *argv0) +{ +#ifdef G_OS_WIN32 + char *p; + char buf[MAX_PATH]; + DWORD len; + + if (exec_dir) { + return; + } + + len = GetModuleFileName(NULL, buf, sizeof(buf) - 1); + if (len == 0) { + return; + } + + buf[len] = 0; + p = buf + len - 1; + while (p != buf && *p != '\\') { + p--; + } + *p = 0; + if (access(buf, R_OK) == 0) { + exec_dir = g_strdup(buf); + } else { + exec_dir = CONFIG_BINDIR; + } +#else + char *p = NULL; + char buf[PATH_MAX]; + + if (exec_dir) { + return; + } + +#if defined(__linux__) + { + int len; + len = readlink("/proc/self/exe", buf, sizeof(buf) - 1); + if (len > 0) { + buf[len] = 0; + p = buf; + } + } +#elif defined(__FreeBSD__) \ + || (defined(__NetBSD__) && defined(KERN_PROC_PATHNAME)) + { +#if defined(__FreeBSD__) + static int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1}; +#else + static int mib[4] = {CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME}; +#endif + size_t len = sizeof(buf) - 1; + + *buf = '\0'; + if (!sysctl(mib, ARRAY_SIZE(mib), buf, &len, NULL, 0) && + *buf) { + buf[sizeof(buf) - 1] = '\0'; + p = buf; + } + } +#elif defined(__APPLE__) + { + char fpath[PATH_MAX]; + uint32_t len = sizeof(fpath); + if (_NSGetExecutablePath(fpath, &len) == 0) { + p = realpath(fpath, buf); + if (!p) { + return; + } + } + } +#elif defined(__HAIKU__) + { + image_info ii; + int32_t c = 0; + + *buf = '\0'; + while (get_next_image_info(0, &c, &ii) == B_OK) { + if (ii.type == B_APP_IMAGE) { + strncpy(buf, ii.name, sizeof(buf)); + buf[sizeof(buf) - 1] = 0; + p = buf; + break; + } + } + } +#endif + /* If we don't have any way of figuring out the actual executable + location then try argv[0]. */ + if (!p && argv0) { + p = realpath(argv0, buf); + } + if (p) { + exec_dir = g_path_get_dirname(p); + } else { + exec_dir = CONFIG_BINDIR; + } +#endif +} + +const char *qemu_get_exec_dir(void) +{ + return exec_dir; +} + char *get_relocated_path(const char *dir) { size_t prefix_len = strlen(CONFIG_PREFIX); diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 477990f39baf..7ba4472760ba 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -283,87 +283,6 @@ void qemu_set_tty_echo(int fd, bool echo) tcsetattr(fd, TCSANOW, &tty); } -static const char *exec_dir; - -void qemu_init_exec_dir(const char *argv0) -{ - char *p = NULL; - char buf[PATH_MAX]; - - if (exec_dir) { - return; - } - -#if defined(__linux__) - { - int len; - len = readlink("/proc/self/exe", buf, sizeof(buf) - 1); - if (len > 0) { - buf[len] = 0; - p = buf; - } - } -#elif defined(__FreeBSD__) \ - || (defined(__NetBSD__) && defined(KERN_PROC_PATHNAME)) - { -#if defined(__FreeBSD__) - static int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1}; -#else - static int mib[4] = {CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME}; -#endif - size_t len = sizeof(buf) - 1; - - *buf = '\0'; - if (!sysctl(mib, ARRAY_SIZE(mib), buf, &len, NULL, 0) && - *buf) { - buf[sizeof(buf) - 1] = '\0'; - p = buf; - } - } -#elif defined(__APPLE__) - { - char fpath[PATH_MAX]; - uint32_t len = sizeof(fpath); - if (_NSGetExecutablePath(fpath, &len) == 0) { - p = realpath(fpath, buf); - if (!p) { - return; - } - } - } -#elif defined(__HAIKU__) - { - image_info ii; - int32_t c = 0; - - *buf = '\0'; - while (get_next_image_info(0, &c, &ii) == B_OK) { - if (ii.type == B_APP_IMAGE) { - strncpy(buf, ii.name, sizeof(buf)); - buf[sizeof(buf) - 1] = 0; - p = buf; - break; - } - } - } -#endif - /* If we don't have any way of figuring out the actual executable - location then try argv[0]. */ - if (!p && argv0) { - p = realpath(argv0, buf); - } - if (p) { - exec_dir = g_path_get_dirname(p); - } else { - exec_dir = CONFIG_BINDIR; - } -} - -const char *qemu_get_exec_dir(void) -{ - return exec_dir; -} - #ifdef CONFIG_LINUX static void sigbus_handler(int signal, siginfo_t *siginfo, void *ctx) #else /* CONFIG_LINUX */ diff --git a/util/oslib-win32.c b/util/oslib-win32.c index dafef4f15733..6c818749d2b9 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -269,42 +269,6 @@ void qemu_set_tty_echo(int fd, bool echo) } } -static const char *exec_dir; - -void qemu_init_exec_dir(const char *argv0) -{ - - char *p; - char buf[MAX_PATH]; - DWORD len; - - if (exec_dir) { - return; - } - - len = GetModuleFileName(NULL, buf, sizeof(buf) - 1); - if (len == 0) { - return; - } - - buf[len] = 0; - p = buf + len - 1; - while (p != buf && *p != '\\') { - p--; - } - *p = 0; - if (access(buf, R_OK) == 0) { - exec_dir = g_strdup(buf); - } else { - exec_dir = CONFIG_BINDIR; - } -} - -const char *qemu_get_exec_dir(void) -{ - return exec_dir; -} - int getpagesize(void) { SYSTEM_INFO system_info;