From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/13665 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Jorge Almeida Newsgroups: gmane.linux.lib.musl.general Subject: fdopendir (BUG?) Date: Mon, 28 Jan 2019 12:37:30 +0000 Message-ID: Reply-To: musl@lists.openwall.com Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="000000000000370283058083f103" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="164246"; mail-complaints-to="usenet@blaine.gmane.org" To: musl@lists.openwall.com Original-X-From: musl-return-13681-gllmg-musl=m.gmane.org@lists.openwall.com Mon Jan 28 13:37:58 2019 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by blaine.gmane.org with smtp (Exim 4.89) (envelope-from ) id 1go6Ak-000gXZ-AF for gllmg-musl@m.gmane.org; Mon, 28 Jan 2019 13:37:54 +0100 Original-Received: (qmail 22447 invoked by uid 550); 28 Jan 2019 12:37:51 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Original-Received: (qmail 22416 invoked from network); 28 Jan 2019 12:37:51 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=PVqtFbgPWw063g38RApri5PiiN8XzJAdZ3XZXEdm4ro=; b=msEo83Ny3IakI6L4bpHcciejHu5jmoTMaVVc+z1Sixm3aHJkGnFLnQgiEGbUP1wgUu lEPm6LhErsbQ8i1NaONT+QBODfqvWmnylIYDg7XSJD9X4S6DtW/kZBUjQ0RIKUkotidd WJlAcNl+vv8+ugY79fIf5v2B7nYpZsVc8fD87wB20j1HqiODclrK/dyOQzct9Noczj5K 1Ft4TdQJmvo4KFMLAy1NNXsVADxVe0+Z8Flf3echnVYQTRnBpyk5l4uj4lpKAPg76Yqm omLJedXAG0mNXGxX7Oxoo/soqK2IxSergdcWkJ8/yEOniLNruIr7jsVrp+tOUesCAmHB VzrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=PVqtFbgPWw063g38RApri5PiiN8XzJAdZ3XZXEdm4ro=; b=tacz7TWty7up3T0b0ByzOklYhNzOvXaGs+cjsaveVogyVFClxmYBtPefhl1TL1i5m2 GDHwzX/29L6VlKTBfyx3SUVSjY3LDBJDnNMm4veZ5xIV/ueuv0qCv+SEdOUqm7Sco6rq 0UTNkpRymPlE2/FUQx36ixwsRa4FoHKGwvktmlZW3XTg+OnWilHkHNj4KiajWpyZV9OV FdaGbrCjxWPRL2kN0X/qCNxlY0bbP7u5FfkXZhHGYK1myg2WPX6b1TBaVlLGnqmviMMB v+Oindm4jCahsnfv18BDA/SEAx08y4kJhxnw5Zl0+mSlnp/nlBKuQcLq4BwxstzPh1ul n4cA== X-Gm-Message-State: AJcUukfLpeGvT8V3ll1laN0jALgzC46IQ754eiW0gcvjhVDdX1bgaXti C5CtRIkDb6R2LTkDhwyTxoFJg2ym3qqiQ924maG0Pg== X-Google-Smtp-Source: ALg8bN6h5i7W+NtTozq/JPihzRyReb5qpQRsF+PCvpvkZMP0D5JMsdy43cfBeC4SYs67YnKH/OWKoU85dNdvQk9rjYo= X-Received: by 2002:a19:db82:: with SMTP id t2mr16149798lfi.130.1548679059525; Mon, 28 Jan 2019 04:37:39 -0800 (PST) Xref: news.gmane.org gmane.linux.lib.musl.general:13665 Archived-At: --000000000000370283058083f103 Content-Type: text/plain; charset="UTF-8" Calling fdopendir with a file descriptor obtained with O_PATH yields a bad directory stream descriptor (as it should, if I understood correctly the documentation of open() re O_PATH). However, the call doesn't fail (it should fail with EBADF). A subsequent call to readdir (3) detects the error. (the problem also occurs with glibc, besides the fact that glibc requires also _GNU_SOURCE to compile, contradicting the linux man page) Am I missing something? (Complete test program in attachement, so that Gmail doesn't crap it.) Thanks, Jorge Almeida --000000000000370283058083f103 Content-Type: text/x-csrc; charset="US-ASCII"; name="test.c" Content-Disposition: attachment; filename="test.c" Content-Transfer-Encoding: base64 Content-ID: X-Attachment-Id: f_jrgbij9v0 I2RlZmluZSBfUE9TSVhfQ19TT1VSQ0UgMjAwODA5TAovLyNkZWZpbmUgX0dOVV9TT1VSQ0UKI2lu Y2x1ZGUgPHVuaXN0ZC5oPgojaW5jbHVkZSA8c3RkbGliLmg+CiNpbmNsdWRlIDxzdGRpby5oPgoj aW5jbHVkZSA8c3lzL3R5cGVzLmg+CiNpbmNsdWRlIDxzeXMvc3RhdC5oPgojaW5jbHVkZSA8ZmNu dGwuaD4KI2luY2x1ZGUgPGRpcmVudC5oPgojaW5jbHVkZSA8ZXJybm8uaD4KCi8qICJzb21lZGly IiBzaG91bGQgYmUgYW4gZXhpc3Rpbmcgc3ViZGlyZWN0b3J5IG9mIHRoZSBjdXJyZW50IGRpcmVj dG9yeSAqLwoKaW50IG1haW4oaW50IGFyZ2MsIGNoYXIqIGFyZ3ZbXSl7CgkJaW50IGZkPW9wZW4o InNvbWVkaXIiLCBPX1JET05MWXxPX1BBVEh8T19ESVJFQ1RPUlkpOwovLwkJaW50IGZkPW9wZW4o InNvbWVkaXIiLCBPX1JET05MWXxPX0RJUkVDVE9SWSk7CgkJaWYoZmQgPT0gLTEpewoJCQkJZnBy aW50ZihzdGRlcnIsICJvcGVuOiAlZFxuIiwgZXJybm8pOwoJCQkJZXhpdCgxKTsKCQl9CgkJRElS KiBkaXI9ZmRvcGVuZGlyKGZkKTsKLy8JCURJUiogZGlyPW9wZW5kaXIoInNvbWVkaXIiKTsKCQlp ZihkaXIgPT0gTlVMTCl7CgkJCQlmcHJpbnRmKHN0ZGVyciwgImZkb3BlbmRpcjogJWRcbiIsIGVy cm5vKTsKCQkJCWV4aXQoMSk7CgkJfQoJCXN0cnVjdCBkaXJlbnQqIGRlOwoJCWVycm5vPTA7CgkJ ZGU9cmVhZGRpcihkaXIpOwoJCWlmKGRlID09IE5VTEwgJiYgZXJybm8pewoJCQkJZnByaW50Zihz dGRlcnIsICJyZWFkZGlyOiAlZFxuIiwgZXJybm8pOwoJCQkJZXhpdCgxKTsKCQl9Cn0K --000000000000370283058083f103--