From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL autolearn=ham autolearn_force=no version=3.4.2 Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by inbox.vuxu.org (OpenSMTPD) with SMTP id d564d8fd for ; Wed, 12 Feb 2020 20:01:54 +0000 (UTC) Received: (qmail 8121 invoked by uid 550); 12 Feb 2020 20:01:52 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 8100 invoked from network); 12 Feb 2020 20:01:52 -0000 To: musl@lists.openwall.com References: <6ead5f7b-d645-5df0-cb06-a99178471a96@bell-sw.com> <1286e416-808c-9795-f76d-d8efa7c0125f@adelielinux.org> <20200212142743.GY1663@brightrain.aerifal.cx> From: "A. Wilcox" Autocrypt: addr=awilfox@adelielinux.org; prefer-encrypt=mutual; keydata= mQINBE+DjPIBEADTQ1H/e/avDUhgt8+T3TJpjGYoY9Y47EMfHqWMm9LjR9aiZSG6GWRbpjWS 4V0DqzIhNQw7HLkPws9CVqQkmpIeltQyGDV2qcR5AXxJ4lCRWHxwRzWE0cCzhLUR9BBWOO0U NINQY+2IqmzRAqXZ9zL+mGTles/qeheXmaWLKf/T0kqJFihoM+ItQvUWOkWUdVv0prhzXr9Q QUdt0NTIW8n4sPwtuSvQgqwSzCJQArh1myugVSGiIIN38pCU8g41Vh35mHHhbHjbn0o1mhrX B/gbsndGo7QQBKz4CPaSel+Fl92dCvVWTp1XYyjqeZx2xlx1zfDrXOTuzY1WmNHi7BgHYuem tG7Zyp7u9MR6FvLKgQhmvCQZXaa+9oNtwKckxoP/I5R8ede9YRb6pLyG5JC0pTTk7kpUZCX2 tm8pLKy899zomm8BBm71aEJHE44ABEl/PbM7tA7XhSPiWsdBmVCxH4bqpUgGMx0ztqhNsUul SDDhiAWgtYFHATynhmeKBDKthkO7lj4CzwI54dn1uiwDtvUFVyVsPMjJcCxFnONbOPcvm1R9 sDg5sn57dv0f+EtaU3ppZdotutjM9X7OEC93d1flO3k1LO20qn2ZcI24f3tEOLAjn5xZ1GdV 3BYBwrtuaaiO8tMdp0uAtILzkkrcr0vOi2/SngxtXFw+44X+WQARAQABtDNBLiBXaWxjb3gg KEFkw6lsaWUgTGludXgpIDxhd2lsZm94QGFkZWxpZWxpbnV4Lm9yZz6JAjoEEwEIACQCGwMF CwkIBwIGFQgJCgsCBBYCAwECHgECF4AFAlhEpGYCGQEACgkQyynLUZIrnRQu5RAAqxHJdNIQ ucYYUaYX4EHJte4OAZbxXeGgMi4fe4m2qkMrd8U6VDfRbjsqETK7fOJdrIjvp+xrMTMvj36C LZ5YuBVmvTd4+Qn54y+8doMUtZppjW9Njwols3zCeaZR/4Iid2GjS7+avgVEhMuxlo5apygb n84VhdLRPAs2BtyqUWUhlLs2nXg6kzI/yT8frGGCN36Xewe35jrhl7h4d54t7h+wYcYw52Yt GHs/R+yPlCGPrlzh8IGwjDWDaUrQAqWdU3B2UG4g/yn/JYZrkvfbm7AhpBP5trY2jbm7sfTM NoClDDwgf0K8Kfj0LeBUzOLqGgQNBdaJ2x7f1xq5tJjAPmVL6oMElqyDz9ycUXvelLMnxgXI sjndF+K1aKjg6Ok68BfTo+tnUqmEjqAhjLBCSphQJavww8pU9KSPmxOr0GfjoiYELeoCdTe2 U44bhFwCcf5tG1qdu8l4pes1YPRVAVyr4J/BlS2e3FyU3MsYlma9toYghJZ0k9dVOqx5YXj9 B2keDpX1D7uEJUHpoRSPylLYKJCcNuzrsaK0gvczkgUvhaiij8qnlLEmDsv7KMdsv+qxknNC vdCBgoiYn01ZJZJrlllOEXpVAXfQDKcqGnIJ4GX87TIu3hR94tw4LOCayfRpN2Y4zlACPLaZ KiSon4ySDo+ooYQ8WgwH1y1ESsa5Ag0ET4OM8gEQAOI/n9h9v2TBOiLUt/nL+HOdxqvkfrKp mDHXx6ctJSm0VBHhHCxKN6Tk2B0BsUXcgR+BD76Tw4kTQvuj3E87m13xHRtASdCmnkvGhU4c JJ9ZbJbJhPLNr9qPUxwCQxFyMrFri/9GnE0Kbv5FfxsLQy9Slubnyg3CfI/wIP5pOoVFA2qI UmsQS155DmhbV2m0FDf0san01ZRMFYVcUUktcmFo0Xmr6PAxZ0FTaxSF8+921lKrvShcsnMv Osrf5toJGEdQw/IMO5rKH1m+q3qWQAOw4uF4WQJrGvhEsVK8G4mC6EBDTbxFVDtyBTMAGUVS t+Yb5i0iIYiMAP2MEJ+twg58PV+5RglheTGP9iPW0xReI1sOD9jfIrQbwqWpOchDGBUpQx4q DFYzzcbjvAP1k2o0mwMby5DJlVwktUiXXtOWZXKZXfTnCA65x1bC6gbtMrXN1CWkyjKT9xj9 Z5WlpZaeqe2SZkLG3/N7r4bSbw/Z6NsYeJ8CpSe6SfoWSsjebD6kbXlF5dsQf8aMUjaZAHp0 UpinfgWNh+58128yddsRMsidjU/MmwhzcRFsvn3rkgtnK4IwpLEfssChNPa26qwfcsvQ+AQU CCRd/GIZ8AkOVySQ30J8Assa/T3nc6VNKRVgsAiSClkeqVevAZmUMUbvH8f3cTe1VFn6kR3q pvfTABEBAAGJAh8EGAECAAkFAk+DjPICGwwACgkQyynLUZIrnRQifQ//f++reIP4el9Un1w4 11boSy1iBALnv58YSQQHPIZ4dq5hr8P1Hp3GDz+o6JFKeIHq5RYw2ornumS9waDbz7dRD1nc N5sMoVfR2g2P7honq59r3velxX36PmifHMmxb8MTqbCSJJRisqjWTMg7CZxH0NQ28qMtpiAw kvoEb+l2Uc/gKnvcpPfVJ/X0b3go0xAe9GA7Os9thjtl1v+I7c2+xjPUtvv+pDGRb9To2+Sw zOGwogbTrVw7KgAFhktx6i8tenXZRf36O0GTACRY//qHNoNNy5H4LYmfyHj6VU2ehwNJTlkK H/8oYV7fkOdcs6DZAnxeiOXUKpHC6ck0D0sWQ42GTeEraospQevGTrp1FZdYnfXznUFXuC6W jHR9piQehutMJ1vCP+DIRLGOMzV1TFWflpo71lb4AFLU3UOS/N7Cd8F+w1nG3WPn7UjFCMrc Xf268AEe0xwakXgNtwo2MTbtQSAO5AKYyGm/hnoLZg4YQ2eBPU95jUV+GMoEM/8Q0BJgsyF0 66NfhBXtuo50AipcARmnoqi6NDOKpC6mqiEYGsVuyQ9cRtkk9Jl98tXmnjxQlSL2nb4ErwJJ SyJq3hwiKMUJcw88IRNtYBe+dXaW4kDBTRha1k+brWZbu4tUlRWLVcSGjtP1pVukXA/SQ6a1 N7qhRF0UHQZkMW1rGbU= Organization: =?UTF-8?Q?Ad=c3=a9lie_Linux?= Message-ID: <0fbc68ed-4259-52d4-5a8a-1a116ffe8340@adelielinux.org> Date: Wed, 12 Feb 2020 14:01:36 -0600 User-Agent: Mozilla/5.0 (X11; Linux ppc64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200212142743.GY1663@brightrain.aerifal.cx> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="iIm1A0wtcG7MNu1vwzmCymIyP5NHGfBjZ" Subject: Re: [musl] execvp() behaviour with unrecognized file header This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --iIm1A0wtcG7MNu1vwzmCymIyP5NHGfBjZ Content-Type: multipart/mixed; boundary="P0KNcNwGpbiuLs4SVQQnvRHNpJAiD9ZYP" --P0KNcNwGpbiuLs4SVQQnvRHNpJAiD9ZYP Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 12/02/2020 08:27, Rich Felker wrote: > Note that this patch has multiple problems which is why it's not > upstream: unbounded vla, inconsistency of not supporting the shell > behavior in execvpe (nonstandard extension, but should behave > analogously), and redundant code in execlp (execvp, which it's > calling, is already doing the fallback). I'm not sure what the right > fix is. These functions are supposed to be safe to use from a vforked > child, so allocation is kinda out of the question, at least not > without some heavy machinery to prevent a leak in the parent's address > space. I'd welcome ideas for a real fix. >=20 > Rich >=20 Indeed, the patch is not ideal. It was simply the fastest way to ensure conformance with this behaviour, which was important for reasons that are lost to the sands of time. (I no longer have any recollection of which package was demanding this behaviour.) Best, --arw --=20 A. Wilcox (awilfox) Project Lead, Ad=C3=A9lie Linux https://www.adelielinux.org --P0KNcNwGpbiuLs4SVQQnvRHNpJAiD9ZYP-- --iIm1A0wtcG7MNu1vwzmCymIyP5NHGfBjZ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEjNyWOYPU1SaTSMHHyynLUZIrnRQFAl5EWaAACgkQyynLUZIr nRSjWBAAkhBUNCkwqj/OswDHauFpaTcM3n1NRnI4YZbHUp+zOuGEHvXTuDJMeuYT /izqP+UApQlxTicVE2nrJRLYaPmj1oOEq1SKe0oPrH6JL+qgGoFTl2/7YAZnVoZ8 rbP/Ri1362gjaJQynf7B7LDNdDEGMH/QWhARhJviGkT6rEt7c99f+hzUbt3nego1 T8/s7PlEa4cdGV0WPTm2911rzLsYfu5NqXfzngUJ1/dnJvhPAR2oZWn7N54NK9pf KllKb6cyrBaXSa7cgN3dHo5LVuoQ4mZNyZLpCIv3oyk3Z0dx9G+LNOXfiLtlLljF m9h+xWa1MAJy2btKZ4kENfMLyzT7trk6NA+DiZ3eV8/J6SighMveL3nxBKucdsxG aHAB1pTLYSU4+CVPKu9CeSy1InFAm74B3MAjEscNNzlct++VoUy5xGPBCKiS2RIw l6PFXSr9gUCEG6PT+6rxzcnh04t3Sm9dsZi3ChXMT0cdCVsQQonR8vU6jfGZtQcr aJ7zGY0B1NSUF/qa4r9xS/ZoFWpGGgC0IQIyfG+uuWRU21q9+tDE9L28UCZOUFmV k7cuqIJLFwm+jW2Y5DRINvPn87JNeh8QORf45HqjHRFzSJPbE0wJ+UiVyLoivnwc SVmlzXxXHBkEm8r5TD9Lx9UyUpOywUaGUpUZPTC/OhI2hF1emBs= =hCaw -----END PGP SIGNATURE----- --iIm1A0wtcG7MNu1vwzmCymIyP5NHGfBjZ--