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{
    "id": 23254,
    "url": "https://patchwork.libcamera.org/api/patches/23254/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/23254/",
    "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": "<20250424114103.451395-3-barnabas.pocze@ideasonboard.com>",
    "date": "2025-04-24T11:40:56",
    "name": "[RFC,v5,2/9] libcamera: process: Misc. cleanup around `execv()`",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "604e08be1be333d1f00624fe8858d373f4b96aaa",
    "submitter": {
        "id": 216,
        "url": "https://patchwork.libcamera.org/api/people/216/?format=api",
        "name": "Barnabás Pőcze",
        "email": "barnabas.pocze@ideasonboard.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/23254/mbox/",
    "series": [
        {
            "id": 5145,
            "url": "https://patchwork.libcamera.org/api/series/5145/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5145",
            "date": "2025-04-24T11:40:54",
            "name": "libcamera: process: Remove `ProcessManager` singleton",
            "version": 5,
            "mbox": "https://patchwork.libcamera.org/series/5145/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/23254/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/23254/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 B0CE4C32A2\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 24 Apr 2025 11:41:16 +0000 (UTC)",
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        ],
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        "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1745494865;\n\tbh=v+d5do+BDii4mzQmG2m0z5d+XRpJdYj73QV9LWHAWRs=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=j2HMYSBXkK7GhMPUKx9j1VOGpJepOgnR6rYFkJhP+OJgeI/MLvUXgZEuQRT1PyT2R\n\tC7GFty4VapFcPdkz/rE4vFSqpfEIcOVswd9ptPSVtMRREJH44AxQbbzW5iBF7/QWwK\n\tazcWWaE43J2zNp7Dz1XK+mSqD+odQmDnwBKYFMGs=",
        "From": "=?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= <barnabas.pocze@ideasonboard.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "Kieran Bingham <kieran.bingham@ideasonboard.com>,\n\tLaurent Pinchart <laurent.pinchart@ideasonboard.com>",
        "Subject": "[RFC PATCH v5 2/9] libcamera: process: Misc. cleanup around\n\t`execv()`",
        "Date": "Thu, 24 Apr 2025 13:40:56 +0200",
        "Message-ID": "<20250424114103.451395-3-barnabas.pocze@ideasonboard.com>",
        "X-Mailer": "git-send-email 2.49.0",
        "In-Reply-To": "<20250424114103.451395-1-barnabas.pocze@ideasonboard.com>",
        "References": "<20250424114103.451395-1-barnabas.pocze@ideasonboard.com>",
        "MIME-Version": "1.0",
        "Content-Type": "text/plain; charset=UTF-8",
        "Content-Transfer-Encoding": "8bit",
        "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>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Firstly, get the number of arguments first, and use that to determine the\nsize of the allocation instead of retrieving it twice.\n\nSecondly, use `const_cast` instead of a C-style cast when calling `execv()`.\n\nThird, use `size_t` to match the type of `args.size()`.\n\nSigned-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>\nReviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\nReviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\n---\n src/libcamera/process.cpp | 9 +++++----\n 1 file changed, 5 insertions(+), 4 deletions(-)",
    "diff": "diff --git a/src/libcamera/process.cpp b/src/libcamera/process.cpp\nindex 68fad3270..0990b4bdd 100644\n--- a/src/libcamera/process.cpp\n+++ b/src/libcamera/process.cpp\n@@ -265,14 +265,15 @@ int Process::start(const std::string &path,\n \t\tif (file && strcmp(file, \"syslog\"))\n \t\t\tunsetenv(\"LIBCAMERA_LOG_FILE\");\n \n-\t\tconst char **argv = new const char *[args.size() + 2];\n-\t\tunsigned int len = args.size();\n+\t\tconst size_t len = args.size();\n+\t\tauto argv = std::make_unique<const char *[]>(len + 2);\n+\n \t\targv[0] = path.c_str();\n-\t\tfor (unsigned int i = 0; i < len; i++)\n+\t\tfor (size_t i = 0; i < len; i++)\n \t\t\targv[i + 1] = args[i].c_str();\n \t\targv[len + 1] = nullptr;\n \n-\t\texecv(path.c_str(), (char **)argv);\n+\t\texecv(path.c_str(), const_cast<char **>(argv.get()));\n \n \t\texit(EXIT_FAILURE);\n \t}\n",
    "prefixes": [
        "RFC",
        "v5",
        "2/9"
    ]
}