Patch Detail
Show a patch.
GET /api/patches/11941/?format=api
{ "id": 11941, "url": "https://patchwork.libcamera.org/api/patches/11941/?format=api", "web_url": "https://patchwork.libcamera.org/patch/11941/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20210415083843.3399502-5-hiroh@chromium.org>", "date": "2021-04-15T08:38:38", "name": "[libcamera-devel,RFC,05/10] libcamera: MediaDevice: Manage fd by ScopedFD", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "a8c3b414cf139873aae4f45af618c98138d8dafa", "submitter": { "id": 63, "url": "https://patchwork.libcamera.org/api/people/63/?format=api", "name": "Hirokazu Honda", "email": "hiroh@chromium.org" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/11941/mbox/", "series": [ { "id": 1933, "url": "https://patchwork.libcamera.org/api/series/1933/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=1933", "date": "2021-04-15T08:38:35", "name": null, "version": 1, "mbox": "https://patchwork.libcamera.org/series/1933/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/11941/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/11941/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id E39B5BD224\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 15 Apr 2021 08:38:58 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 8F09B68819;\n\tThu, 15 Apr 2021 10:38:58 +0200 (CEST)", "from mail-pf1-x430.google.com (mail-pf1-x430.google.com\n\t[IPv6:2607:f8b0:4864:20::430])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 4704868814\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 15 Apr 2021 10:38:56 +0200 (CEST)", "by mail-pf1-x430.google.com with SMTP id w6so1060042pfc.8\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 15 Apr 2021 01:38:56 -0700 (PDT)", "from hiroh2.tok.corp.google.com\n\t([2401:fa00:8f:2:84f5:7981:dfbe:8f02])\n\tby smtp.gmail.com with ESMTPSA id\n\t205sm1520258pfc.201.2021.04.15.01.38.53\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tThu, 15 Apr 2021 01:38:54 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=chromium.org header.i=@chromium.org\n\theader.b=\"QL8iEkZI\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org;\n\ts=google; \n\th=from:to:cc:subject:date:message-id:in-reply-to:references\n\t:mime-version:content-transfer-encoding;\n\tbh=LKkKX4GMwLU2Dxbhn7PTkVZ+gEoDG/ROJiWihqhB7b4=;\n\tb=QL8iEkZI2IYGN2h3YWKByp6+FutPNjlM3pA2losM496fu/XOA2SqRl4LL6oHNuJzHP\n\tPlwqYQjKBxuG5kXJoN8690c6R5YGjJYnJXGLkPwvN/2NndPvUU7K+8qRLMgqgI4HweAt\n\tO1tuR+nQdryDRZxEztYMhez3a/OYRn1Lgg/JM=", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references:mime-version:content-transfer-encoding;\n\tbh=LKkKX4GMwLU2Dxbhn7PTkVZ+gEoDG/ROJiWihqhB7b4=;\n\tb=M9Mt1Ik9BdBjkvHQtoeGRiQiBgZC/sI6EoGjbHI2Zm+x4d89P0pcAOQmaUFI7S4C7Y\n\tna9inwDU1yeBQFXdO0A+F86kCJontopXrrQ73HwNsMVFWBC1AHbAORGlh4gX9i4HkEVm\n\tNcnLYrBnXrtI2I3/ke5C9OLwOk7jCeLaRmEGaGLa5mZNnEoj6Pz4+IxVMuAe1yRe9MIV\n\tRjkyANaWF3q0HdztAGpGWlWcyQJhNPFXh87M6xs6etybRcge5galiJ96DDsPd7unM4hp\n\tWnR6JyvbMo92wh4ldDuvf07t/ccRfx7/k3a9FFNYvx0MsLpSDyfQd//hpw6XYXzEi8OS\n\t1EFw==", "X-Gm-Message-State": "AOAM532I0/sz0RkVYpy0l8NShOUILLKiPUDI5qllg6Go65F2Zqr308zp\n\tSo33IWZZmxnzGJxcpIsff569L18fcAzrCw==", "X-Google-Smtp-Source": "ABdhPJy4sW+NyxoFOm0ZosWnLiOrjRa8sTucBrbP9Q2mwe+OXZeecLFlbPQKzhQNHvhDm6lduqzYkw==", "X-Received": "by 2002:a63:1f4d:: with SMTP id\n\tq13mr2441681pgm.453.1618475934731; \n\tThu, 15 Apr 2021 01:38:54 -0700 (PDT)", "From": "Hirokazu Honda <hiroh@chromium.org>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Thu, 15 Apr 2021 17:38:38 +0900", "Message-Id": "<20210415083843.3399502-5-hiroh@chromium.org>", "X-Mailer": "git-send-email 2.31.1.368.gbe11c130af-goog", "In-Reply-To": "<20210415083843.3399502-1-hiroh@chromium.org>", "References": "<20210415083843.3399502-1-hiroh@chromium.org>", "MIME-Version": "1.0", "Subject": "[libcamera-devel] [RFC PATCH 05/10] libcamera: MediaDevice: Manage\n\tfd by ScopedFD", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "MediaDevice owns a file descriptor for a media device node. It\nshould be managed by ScopedFD to avoid the leakage.\n\nSigned-off-by: Hirokazu Honda <hiroh@chromium.org>\n---\n include/libcamera/internal/media_device.h | 3 ++-\n src/libcamera/media_device.cpp | 33 ++++++++++-------------\n 2 files changed, 16 insertions(+), 20 deletions(-)", "diff": "diff --git a/include/libcamera/internal/media_device.h b/include/libcamera/internal/media_device.h\nindex c3292508..efdfbf36 100644\n--- a/include/libcamera/internal/media_device.h\n+++ b/include/libcamera/internal/media_device.h\n@@ -14,6 +14,7 @@\n \n #include <linux/media.h>\n \n+#include <libcamera/scoped_file_descriptor.h>\n #include <libcamera/signal.h>\n \n #include \"libcamera/internal/log.h\"\n@@ -82,7 +83,7 @@ private:\n \tunsigned int version_;\n \tunsigned int hwRevision_;\n \n-\tint fd_;\n+\tScopedFD fd_;\n \tbool valid_;\n \tbool acquired_;\n \tbool lockOwner_;\ndiff --git a/src/libcamera/media_device.cpp b/src/libcamera/media_device.cpp\nindex 9ec84e56..ad5efbf6 100644\n--- a/src/libcamera/media_device.cpp\n+++ b/src/libcamera/media_device.cpp\n@@ -63,15 +63,14 @@ LOG_DEFINE_CATEGORY(MediaDevice)\n * populate() before the media graph can be queried.\n */\n MediaDevice::MediaDevice(const std::string &deviceNode)\n-\t: deviceNode_(deviceNode), fd_(-1), valid_(false), acquired_(false),\n+\t: deviceNode_(deviceNode), valid_(false), acquired_(false),\n \t lockOwner_(false)\n {\n }\n \n MediaDevice::~MediaDevice()\n {\n-\tif (fd_ != -1)\n-\t\t::close(fd_);\n+\tfd_.reset();\n \tclear();\n }\n \n@@ -143,14 +142,14 @@ void MediaDevice::release()\n */\n bool MediaDevice::lock()\n {\n-\tif (fd_ == -1)\n+\tif (!fd_.isValid())\n \t\treturn false;\n \n \t/* Do not allow nested locking in the same libcamera instance. */\n \tif (lockOwner_)\n \t\treturn false;\n \n-\tif (lockf(fd_, F_TLOCK, 0))\n+\tif (lockf(fd_.get(), F_TLOCK, 0))\n \t\treturn false;\n \n \tlockOwner_ = true;\n@@ -169,7 +168,7 @@ bool MediaDevice::lock()\n */\n void MediaDevice::unlock()\n {\n-\tif (fd_ == -1)\n+\tif (!fd_.isValid())\n \t\treturn;\n \n \tif (!lockOwner_)\n@@ -177,7 +176,7 @@ void MediaDevice::unlock()\n \n \tlockOwner_ = false;\n \n-\tlockf(fd_, F_ULOCK, 0);\n+\tlockf(fd_.get(), F_ULOCK, 0);\n }\n \n /**\n@@ -220,7 +219,7 @@ int MediaDevice::populate()\n \t\treturn ret;\n \n \tstruct media_device_info info = {};\n-\tret = ioctl(fd_, MEDIA_IOC_DEVICE_INFO, &info);\n+\tret = ioctl(fd_.get(), MEDIA_IOC_DEVICE_INFO, &info);\n \tif (ret) {\n \t\tret = -errno;\n \t\tLOG(MediaDevice, Error)\n@@ -243,7 +242,7 @@ int MediaDevice::populate()\n \t\ttopology.ptr_links = reinterpret_cast<uintptr_t>(links);\n \t\ttopology.ptr_pads = reinterpret_cast<uintptr_t>(pads);\n \n-\t\tret = ioctl(fd_, MEDIA_IOC_G_TOPOLOGY, &topology);\n+\t\tret = ioctl(fd_.get(), MEDIA_IOC_G_TOPOLOGY, &topology);\n \t\tif (ret < 0) {\n \t\t\tret = -errno;\n \t\t\tLOG(MediaDevice, Error)\n@@ -481,20 +480,20 @@ int MediaDevice::disableLinks()\n */\n int MediaDevice::open()\n {\n-\tif (fd_ != -1) {\n+\tif (!fd_.isValid()) {\n \t\tLOG(MediaDevice, Error) << \"MediaDevice already open\";\n \t\treturn -EBUSY;\n \t}\n \n \tint ret = ::open(deviceNode_.c_str(), O_RDWR);\n \tif (ret < 0) {\n-\t\tret = -errno;\n \t\tLOG(MediaDevice, Error)\n \t\t\t<< \"Failed to open media device at \"\n \t\t\t<< deviceNode_ << \": \" << strerror(-ret);\n \t\treturn ret;\n \t}\n-\tfd_ = ret;\n+\n+\tfd_ = ScopedFD(ret);\n \n \treturn 0;\n }\n@@ -514,11 +513,7 @@ int MediaDevice::open()\n */\n void MediaDevice::close()\n {\n-\tif (fd_ == -1)\n-\t\treturn;\n-\n-\t::close(fd_);\n-\tfd_ = -1;\n+\tfd_.reset();\n }\n \n /**\n@@ -763,7 +758,7 @@ void MediaDevice::fixupEntityFlags(struct media_v2_entity *entity)\n \tstruct media_entity_desc desc = {};\n \tdesc.id = entity->id;\n \n-\tint ret = ioctl(fd_, MEDIA_IOC_ENUM_ENTITIES, &desc);\n+\tint ret = ioctl(fd_.get(), MEDIA_IOC_ENUM_ENTITIES, &desc);\n \tif (ret < 0) {\n \t\tret = -errno;\n \t\tLOG(MediaDevice, Debug)\n@@ -806,7 +801,7 @@ int MediaDevice::setupLink(const MediaLink *link, unsigned int flags)\n \n \tlinkDesc.flags = flags;\n \n-\tint ret = ioctl(fd_, MEDIA_IOC_SETUP_LINK, &linkDesc);\n+\tint ret = ioctl(fd_.get(), MEDIA_IOC_SETUP_LINK, &linkDesc);\n \tif (ret) {\n \t\tret = -errno;\n \t\tLOG(MediaDevice, Error)\n", "prefixes": [ "libcamera-devel", "RFC", "05/10" ] }