From patchwork Tue Nov 27 11:10:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ilya Maximets X-Patchwork-Id: 1003777 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=samsung.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=samsung.com header.i=@samsung.com header.b="pDaFYC4O"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4341MZ73Djz9s47 for ; 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Tue, 27 Nov 2018 11:11:14 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20181127111114eusmtrp268bfc4f153311b05a7804d5b40ede488~q9rPLynFJ0920809208eusmtrp2J; Tue, 27 Nov 2018 11:11:14 +0000 (GMT) X-AuditID: cbfec7f4-835ff700000010c6-e7-5bfd265391c0 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 53.38.04128.2562DFB5; Tue, 27 Nov 2018 11:11:14 +0000 (GMT) Received: from imaximets.rnd.samsung.ru (unknown [106.109.129.180]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20181127111113eusmtip219975332f8c3bde32ff3dbebc5545014~q9rOn8JaT0664206642eusmtip2k; Tue, 27 Nov 2018 11:11:13 +0000 (GMT) From: Ilya Maximets To: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= Date: Tue, 27 Nov 2018 14:10:48 +0300 Message-Id: <20181127111050.18453-3-i.maximets@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181127111050.18453-1-i.maximets@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFuplleLIzCtJLcpLzFFi42LZduznOd1gtb/RBr+Xcls03Au1uNL+k93i 9NEOZosFbe2sFvu3/WO1ON67g8WBzePJtc1MHu/3XWXz6NuyijGAOYrLJiU1J7MstUjfLoEr 49+mH+wFn1gqTv36yNzA+IG5i5GTQ0LARGLP3yfsXYxcHEICKxglGiZ/YIRwvjBK7N98jhnC +cwo8ffoakaYlgUH/jJBJJYzSkz++ZQFJCEk8INRYuKWIBCbTUBH4tTqI2ANIgJuEi8eHGcD aWAW2MYo8WflbLAGYQELiWUzVoLZLAKqEk23ToDZvALWQBvmsENsk5dYveEA0BkcHJwCNhJb fspAlAhKnJz5BKycGaikeetssEslBL6zSUy9uoQJpF5CwEXi0hRXiDHCEq+Ob4EaKSPxf+d8 Jgi7XuJ+y0tGiN4ORonph/5BJewltrw+xw4yh1lAU2L9Ln2IsKPE5Ms72SDG80nceCsIcQKf xKRt05khwrwSHW1CENUqEr8PLoeGtJTEzXef2SFKPCR63ydPYFScheSXWUh+mYWwdgEj8ypG 8dTS4tz01GKjvNRyveLE3OLSvHS95PzcTYzARHL63/EvOxh3/Uk6xCjAwajEw7vh++9oIdbE suLK3EOMEhzMSiK8zsp/o4V4UxIrq1KL8uOLSnNSiw8xSnOwKInzVjM8iBYSSE8sSc1OTS1I LYLJMnFwSjUwZiTtYN4y/XI+X0DilYeBrDf6Jm5Pac6rOGqo75s3u++I60o9t3kXN1bxnTt0 reiw4//ny3z4JUM6607umvCsYk/2wV1Hv/T8NrT16rgw7f6JlhLPQx9XRS9kfGHOsXTJ9A0T Nt197e2/4bGq8Ga/nFh778l/otQXvMrJv/xmhf9Gzt27arKuSymxFGckGmoxFxUnAgAwWMSw IAMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrHLMWRmVeSWpSXmKPExsVy+t/xe7pBan+jDX7+EbZouBdqcaX9J7vF 6aMdzBYL2tpZLfZv+8dqcbx3B4sDm8eTa5uZPN7vu8rm0bdlFWMAc5SeTVF+aUmqQkZ+cYmt UrShhZGeoaWFnpGJpZ6hsXmslZGpkr6dTUpqTmZZapG+XYJexr9NP9gLPrFUnPr1kbmB8QNz FyMnh4SAicSCA3+Zuhi5OIQEljJKPF72gw0iISXx49cFVghbWOLPtS42iKJvjBKPWvazgCTY BHQkTq0+wghiiwi4Sbx4cBysiFlgF6PE9YVHwFYIC1hILJuxEqyBRUBVounWCTCbV8AaaPUc dogN8hKrNxwAqufg4BSwkdjyUwYkLARUsvTFDVaIckGJkzOfgLUyA5U3b53NPIFRYBaS1Cwk qQWMTKsYRVJLi3PTc4uN9IoTc4tL89L1kvNzNzECw37bsZ9bdjB2vQs+xCjAwajEw7vh++9o IdbEsuLK3EOMEhzMSiK8zsp/o4V4UxIrq1KL8uOLSnNSiw8xmgL9MJFZSjQ5HxiTeSXxhqaG 5haWhubG5sZmFkrivOcNKqOEBNITS1KzU1MLUotg+pg4OKUaGIXKjyZbPbSNkwi0K5r1Lv6D 1IsvL423SlrtOPUlS4JzZZVxiJIVS98z18fljxwW+x2cHZfidd5IdLeKe45XeMCz5NzHKw4f UZPjdJvFs9lurc/UwnkOGuHP1/i1vo6/IC2zdsuDVG2tzdapM9atKhRjK913gFUhYwKvWHMb 078b4Qfzg10ClViKMxINtZiLihMBwZ31ZpECAAA= X-CMS-MailID: 20181127111114eucas1p21c991b4dd272c8afa803f90c178030a6 X-Msg-Generator: CA X-RootMTR: 20181127111114eucas1p21c991b4dd272c8afa803f90c178030a6 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20181127111114eucas1p21c991b4dd272c8afa803f90c178030a6 References: <20181127111050.18453-1-i.maximets@samsung.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 210.118.77.11 Subject: [Qemu-devel] [PATCH 2/4] memfd: always check for MFD_CLOEXEC X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ilya Maximets , Paolo Bonzini , Igor Mammedov , qemu-devel@nongnu.org, Eduardo Habkost Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" QEMU always sets this flag unconditionally. We need to check if it's supported. Signed-off-by: Ilya Maximets Reviewed-by: Marc-André Lureau --- util/memfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/util/memfd.c b/util/memfd.c index 8debd0d037..d74ce4d793 100644 --- a/util/memfd.c +++ b/util/memfd.c @@ -188,7 +188,7 @@ bool qemu_memfd_alloc_check(void) bool qemu_memfd_check(unsigned int flags) { #ifdef CONFIG_LINUX - int mfd = memfd_create("test", flags); + int mfd = memfd_create("test", flags | MFD_CLOEXEC); if (mfd >= 0) { close(mfd); From patchwork Tue Nov 27 11:10:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ilya Maximets X-Patchwork-Id: 1003778 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; 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Tue, 27 Nov 2018 11:11:17 +0000 (GMT) From: Ilya Maximets To: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= Date: Tue, 27 Nov 2018 14:10:49 +0300 Message-Id: <20181127111050.18453-4-i.maximets@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181127111050.18453-1-i.maximets@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupmleLIzCtJLcpLzFFi42LZduzned0wtb/RBiumGFg03Au1uNL+k93i 9NEOZosFbe2sFvu3/WO1ON67g8WBzePJtc1MHu/3XWXz6NuyijGAOYrLJiU1J7MstUjfLoEr o2n1Z9aC1SwV0x6uZW1g3MXcxcjJISFgIvF11kl2EFtIYAWjxNMrQV2MXED2F0aJJ4dOMEI4 nxklDl95Dtdx/usqRoiO5YwS1/epQhT9YJRY/20hK0iCTUBH4tTqI2BFIgJuEi8eHGcDKWIW 2MYo8WflbBaQhLCAo8THQ5vBGlgEVCW+fLkNFucVsJaY9Pkp1DZ5idUbDgDZHBycAjYSW37K QJQISpyc+QSsnBmopHnrbGaQ+RIC39kk1vb9YYXodZFoOPASyhaWeHV8CzuELSPxf+d8Jgi7 XuJ+y0tGiOYORonph/5BJewltrw+xw6ymFlAU2L9Lv0uRnagsKPEMWGQoIQAn8SNt4IQF/BJ TNo2nRkizCvR0SYEMUJF4vfB5VB/SEncfPeZHaLEQ+LR9rIJjIqzkLwyC8krsxCWLmBkXsUo nlpanJueWmycl1quV5yYW1yal66XnJ+7iRGYRE7/O/51B+O+P0mHGAU4GJV4eCO+/o4WYk0s K67MPcQowcGsJMLrrPw3Wog3JbGyKrUoP76oNCe1+BCjNAeLkjhvNcODaCGB9MSS1OzU1ILU IpgsEwenVANj976aT6GScfee735a6au98MOmjZfcGHinF/zr6n1w2ZLv8fvolW85S56ctbR+ aFFi8KxfyvH7s93e8Sv8C1wczwuL8ayqj9eUt1v9Nigt4dDlpNKLO0WTmBi+5m3dYFBvJvr5 yZ6zEeHv6te0FUqVTK290nwsx/jchO9PC7t1CvkElv0qMT6uxFKckWioxVxUnAgA+Bbsbh4D AAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrHLMWRmVeSWpSXmKPExsVy+t/xe7phan+jDVYfYLFouBdqcaX9J7vF 6aMdzBYL2tpZLfZv+8dqcbx3B4sDm8eTa5uZPN7vu8rm0bdlFWMAc5SeTVF+aUmqQkZ+cYmt UrShhZGeoaWFnpGJpZ6hsXmslZGpkr6dTUpqTmZZapG+XYJeRtPqz6wFq1kqpj1cy9rAuIu5 i5GTQ0LAROL811WMXYxcHEICSxklJk//zAiRkJL48esCK4QtLPHnWhcbRNE3RoktV9rBEmwC OhKnVh8BaxARcJN48eA4WBGzwC5GiesLj4CtEBZwlPh4aDNYA4uAqsSXL7dZQGxeAWuJSZ+f Qp0hL7F6wwEgm4ODU8BGYstPGZCwEFDJ0hc3WCHKBSVOznwC1soMVN68dTbzBEaBWUhSs5Ck FjAyrWIUSS0tzk3PLTbSK07MLS7NS9dLzs/dxAgM+23Hfm7Zwdj1LvgQowAHoxIP74bvv6OF WBPLiitzDzFKcDArifA6K/+NFuJNSaysSi3Kjy8qzUktPsRoCvTDRGYp0eR8YEzmlcQbmhqa W1gamhubG5tZKInznjeojBISSE8sSc1OTS1ILYLpY+LglGpg9O5dme/lVSu9quXGc67y3Ude nWmxflOtOEF92bOgpVOrz31QmbztX2Kk7fUaiW8Gx1xXsv2zCUg4LSccuTHxpk7R5h/7Z2kp fp6QvjU03ffYawdNgXmralQDYo7sb5whE8X3XPbYNMaXvgu8vpceOHt/eVPIim07DjoI3rP6 4MMnPOP9v6dvipVYijMSDbWYi4oTAX5aOACRAgAA X-CMS-MailID: 20181127111118eucas1p1b76423fb92768a8501aea2a1dbb512fd X-Msg-Generator: CA X-RootMTR: 20181127111118eucas1p1b76423fb92768a8501aea2a1dbb512fd X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20181127111118eucas1p1b76423fb92768a8501aea2a1dbb512fd References: <20181127111050.18453-1-i.maximets@samsung.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 210.118.77.11 Subject: [Qemu-devel] [PATCH 3/4] memfd: set up correct errno if not supported X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ilya Maximets , Paolo Bonzini , Igor Mammedov , qemu-devel@nongnu.org, Eduardo Habkost Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" qemu_memfd_create() prints the value of 'errno' which is not set in this case. Signed-off-by: Ilya Maximets Reviewed-by: Marc-André Lureau --- util/memfd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/util/memfd.c b/util/memfd.c index d74ce4d793..393d23da96 100644 --- a/util/memfd.c +++ b/util/memfd.c @@ -40,6 +40,7 @@ static int memfd_create(const char *name, unsigned int flags) #ifdef __NR_memfd_create return syscall(__NR_memfd_create, name, flags); #else + errno = ENOSYS; return -1; #endif } From patchwork Tue Nov 27 11:10:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ilya Maximets X-Patchwork-Id: 1003779 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=samsung.com Authentication-Results: ozlabs.org; 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Tue, 27 Nov 2018 11:11:21 +0000 (GMT) From: Ilya Maximets To: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= Date: Tue, 27 Nov 2018 14:10:50 +0300 Message-Id: <20181127111050.18453-5-i.maximets@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181127111050.18453-1-i.maximets@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupjleLIzCtJLcpLzFFi42LZduznOd0Ytb/RBseXM1s03Au1uNL+k93i 9NEOZosFbe2sFvu3/WO1ON67g8WBzePJtc1MHu/3XWXz6NuyijGAOYrLJiU1J7MstUjfLoEr Y/m7bywFM7kq1i+6x9rAuIa9i5GTQ0LAROLyjx9sXYxcHEICKxglrrx+xgrhfGGUePp+GZTz mVHi7IbjcC1LLt1nh0gsZ5TYsuc0M4Tzg1HiztM9LCBVbAI6EqdWH2EEsUUE3CRePDgOtoRZ YBujxJ+Vs4GKODiEBYwkdjyJB6lhEVCV+PlzHyuIzStgLfFuwU1GiG3yEqs3HGAGKecUsJHY 8lMGokRQ4uTMJ2CrmIFKmrfOZoYo/80m0f1NEsJ2keg9844NwhaWeHV8C9QDMhKnJ/ewQNj1 EvdbXjKCnCYh0MEoMf3QPyaIhL3Eltfn2EH2MgtoSqzfpQ8RdpS4dOYWE0hYQoBP4sZbQYgT +CQmbZvODBHmlehoE4KoVpH4fXA51GVSEjfffYa6wEPi9403rBMYFWcheWYWkmdmIexdwMi8 ilE8tbQ4Nz212DgvtVyvODG3uDQvXS85P3cTIzCVnP53/OsOxn1/kg4xCnAwKvHwRnz9HS3E mlhWXJl7iFGCg1lJhNdZ+W+0EG9KYmVValF+fFFpTmrxIUZpDhYlcd5qhgfRQgLpiSWp2amp BalFMFkmDk6pBkYGljZZlXOzWc/Ml6x/emmGyvHHCvOLH1/t/LSa2VJyxTd+rZdPEh411Bkc rWZeyCObcsqh2N3eg/Xyfv3vVgejn5sHmmns1ZK+8O0YV8WniCcrpIRSm00Dl3wIFxWp29fV rhluXyy5yd7juNmGHUbayTzVjaLuFWvr3s89muzp/HJ+xXuzxUosxRmJhlrMRcWJAKGuj4Qh AwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrLLMWRmVeSWpSXmKPExsVy+t/xe7rRan+jDQ5/ZLdouBdqcaX9J7vF 6aMdzBYL2tpZLfZv+8dqcbx3B4sDm8eTa5uZPN7vu8rm0bdlFWMAc5SeTVF+aUmqQkZ+cYmt UrShhZGeoaWFnpGJpZ6hsXmslZGpkr6dTUpqTmZZapG+XYJexvJ331gKZnJVrF90j7WBcQ17 FyMnh4SAicSSS/eBbC4OIYGljBJ/psxig0hISfz4dYEVwhaW+HOtiw2i6BujxMQjLUwgCTYB HYlTq48wgtgiAm4SLx4cBytiFtjFKHF94RHmLkYODmEBI4kdT+JBalgEVCV+/twHNpRXwFri 3YKbjBAL5CVWbzgAVs4pYCOx5acMSFgIqGTpixtQ5YISJ2c+YQGxmYHKm7fOZp7AKDALSWoW ktQCRqZVjCKppcW56bnFhnrFibnFpXnpesn5uZsYgUG/7djPzTsYL20MPsQowMGoxMO74fvv aCHWxLLiytxDjBIczEoivM7Kf6OFeFMSK6tSi/Lji0pzUosPMZoC/TCRWUo0OR8YkXkl8Yam huYWlobmxubGZhZK4rznDSqjhATSE0tSs1NTC1KLYPqYODilGhhLyhxDj4UdcbzHcWPZecVt V8QMzFcIPRRI9GznvJ0TdNr2+5stjw+8en8x2aJZs8hYp2Qf572FMytuLpPy9BTgrPn1XaCk /f6UPH0G0xV7brSarTHqtlqj/3bmq7l3/7Us3nx872npNzu7OmuCAuyNFrl2B/LHcNxr+SfZ WL73apcr0wHR26lKLMUZiYZazEXFiQB5KSi3kAIAAA== X-CMS-MailID: 20181127111123eucas1p15ecbe14062e47527e59ae7d219e3879c X-Msg-Generator: CA X-RootMTR: 20181127111123eucas1p15ecbe14062e47527e59ae7d219e3879c X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20181127111123eucas1p15ecbe14062e47527e59ae7d219e3879c References: <20181127111050.18453-1-i.maximets@samsung.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 210.118.77.11 Subject: [Qemu-devel] [PATCH 4/4] memfd: improve error messages X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ilya Maximets , Paolo Bonzini , Igor Mammedov , qemu-devel@nongnu.org, Eduardo Habkost Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This gives more information about the failure. Additionally 'ENOSYS' returned for a non-Linux platforms instead of 'errno', which is not initilaized in this case. Signed-off-by: Ilya Maximets Reviewed-by: Marc-André Lureau --- util/memfd.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/util/memfd.c b/util/memfd.c index 393d23da96..00334e5b21 100644 --- a/util/memfd.c +++ b/util/memfd.c @@ -71,14 +71,18 @@ int qemu_memfd_create(const char *name, size_t size, bool hugetlb, } mfd = memfd_create(name, flags); if (mfd < 0) { + error_setg_errno(errp, errno, + "failed to create memfd with flags 0x%x", flags); goto err; } if (ftruncate(mfd, size) == -1) { + error_setg_errno(errp, errno, "failed to resize memfd to %zu", size); goto err; } if (seals && fcntl(mfd, F_ADD_SEALS, seals) == -1) { + error_setg_errno(errp, errno, "failed to add seals 0x%x", seals); goto err; } @@ -88,8 +92,9 @@ err: if (mfd >= 0) { close(mfd); } +#else + error_setg_errno(errp, ENOSYS, "failed to create memfd"); #endif - error_setg_errno(errp, errno, "failed to create memfd"); return -1; }