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[209.132.180.131]) by mx.google.com with ESMTPS id 92si3304298plc.124.2017.03.24.08.40.12 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Mar 2017 08:40:12 -0700 (PDT) Received-SPF: pass (google.com: domain of libc-alpha-return-78219-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; Authentication-Results: mx.google.com; dkim=pass header.i=@sourceware.org; spf=pass (google.com: domain of libc-alpha-return-78219-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) smtp.mailfrom=libc-alpha-return-78219-patch=linaro.org@sourceware.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id; q=dns; s= default; b=iXFm5fmrYymX4iwvJ5DJodSwMhdAVXkex1GnzRZSVXf1zuNNonOgw INQeArt1vWKRmdLA/YOr+mlsBks20YSdNM7k0YN3DH0XpXDwwB57FxQXuhAMUSoU VfujB0kVlJaCkFm6bvORDxtudEQZ4Ixu/9NCtm79nXfxbTaJxcdic4= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id; s=default; bh=QYvgqMiLjvG9U1pCsCphptkUoXo=; b=GFkPLBzy0qGdbDoPRWIoH1ZokmA8 vRMT+/zb+9bXmUdnrnIUQz6lWemQy6t27/Q65prV57Mfm0wnFdceTBlNC6NPZ92A H/M93fTAnrwnXyHHcWx0cvaPrh3jdiLGACRjcdmM+tpeyjFy2C5dNoGzpR5RLSkr w6tTpzohfWoOp8E= Received: (qmail 27244 invoked by alias); 24 Mar 2017 15:39:40 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 27230 invoked by uid 89); 24 Mar 2017 15:39:40 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-24.6 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy=Strong, consolidate, D*de.ibm.com, queried X-HELO: mail-qk0-f172.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id; bh=Ig0DjjhU0FrNJ5HNOmzUK3x3BMtns6cNu82b3/I3JWU=; b=NWF5ZoQgEEjaDPjlpc4L+xUb1spgzrn1Q/wl+7r8OPl1Nx0pJAqgxpsLjAfuQM1Do1 0akG81C/7nOWftw10E+ZCmK/IrQ/Eb5rvdGue5JR4vupcWefKVuDY1xI72BXay9pzntm OrmK6KQ00yFDoccaRQYj8UYMA6J50/PCe6aJ1xKXetWHEpnK4yL/erWS0EokFXf3I/8e msAurIqFcI1p/tHMw1bGTDWj7jsUZzLboVy/+MUCkI9OvBq796+RqtD1nzJ0EqwP+WfB yHnkaz0VSRP5qd+Iaz7h/KsNS6Louy/YZToiymdOUjjjAsJ9JAHKOxbhen6x3CuWX9jU PUdQ== X-Gm-Message-State: AFeK/H18gu2nI50eGKkBScLM0FdyLcbGTSyqPTsVqihR9HrXF1//RwezYK8kvXfofwmH5q7K X-Received: by 10.55.102.1 with SMTP id a1mr543584qkc.167.1490369970353; Fri, 24 Mar 2017 08:39:30 -0700 (PDT) From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH] Consolidate Linux mmap implementation Date: Fri, 24 Mar 2017 12:39:22 -0300 Message-Id: <1490369962-29989-1-git-send-email-adhemerval.zanella@linaro.org> This patch consolidates all Linux mmap implementations on default sysdeps/unix/sysv/linux/mmap{64}.c one. To accomodate all required architecture specific requeriments a new internal header is created (mmap_internal.h) where each architecture add its specific code. Currently only x86_64 (to define MMAP_PREPARE to add MAP_32BITS), s390 (which have a different kernel ABI for mmap), m68k (which have variable minimum page sizes), and MIPS n32 (which zero extend the offset to handle negative one correctly) redefine the new header. The patch also fixes BZ#21270 where default mmap64 on architectures which uses mmap2 silent truncates large offsets value (larger than 1 << (page shift + 8 * sizeof (off_t)) or 1<<44 on architectures with 4096 bytes page size). The new consolidate implementation returns EINVAL as allowed by POSIX. It also adds a tests for on current tst-mmap-offset one. I have run a full make check on x86_64, x86_64-32, i686, aarch64, armhf, powerpc, powerpc64le, sparc64, and sparcv9 without any regressions. I also ran some basic tests (tst-mmap-offset) on sh4, m68k, and on qemu simulated MIPS32 and MIPS64. * posix/tst-mmap-offset.c (do_prepare): New function. (do_test): Rename to do_test_bz18877 and use FAIL_RET. (do_test_bz21270): New function. * sysdeps/unix/sysv/linux/aarch64/mmap.c: Remove file. * sysdeps/unix/sysv/linux/arm/mmap.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c: Likewise. * sysdeps/unix/sysv/linux/hppa/mmap.c: Likewise. * sysdeps/unix/sysv/linux/i386/mmap.c: Likewise. * sysdeps/unix/sysv/linux/m68k/mmap.S: Likewise. * sysdeps/unix/sysv/linux/m68k/mmap64.c: Likewise. * sysdeps/unix/sysv/linux/microblaze/mmap.S: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/mmap.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/mmap.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/mmap64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/mmap.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/mmap.S: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/mmap.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/mmap64.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/mmap.c: Likewise. * sysdeps/unix/sysv/linux/mmap_internal.h: New file. * sysdeps/unix/sysv/linux/m68k/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/s390/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list: Remove mmap from auto-generation list. * sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/mmap.c: New file. * sysdeps/unix/sysv/linux/mmap64.c (__mmap64): Add check for invalid offsets and support for mmap2 syscall. --- ChangeLog | 36 +++++++++ posix/tst-mmap-offset.c | 88 +++++++++++++++++----- sysdeps/unix/sysv/linux/aarch64/mmap.c | 34 --------- sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c | 40 ---------- sysdeps/unix/sysv/linux/hppa/mmap.c | 49 ------------ sysdeps/unix/sysv/linux/m68k/mmap.S | 42 ----------- sysdeps/unix/sysv/linux/m68k/mmap64.c | 5 -- .../linux/{arm/mmap.c => m68k/mmap_internal.h} | 15 +++- sysdeps/unix/sysv/linux/microblaze/mmap.S | 50 ------------ sysdeps/unix/sysv/linux/mips/mips32/mmap.c | 1 - .../mips/mips64/n32/{mmap.c => mmap_internal.h} | 25 +++--- .../unix/sysv/linux/mips/mips64/n32/syscalls.list | 2 - sysdeps/unix/sysv/linux/mips/mips64/n64/mmap64.c | 1 - .../unix/sysv/linux/mips/mips64/n64/syscalls.list | 2 - sysdeps/unix/sysv/linux/mmap.c | 51 +++++++++++++ sysdeps/unix/sysv/linux/mmap64.c | 57 +++++++------- sysdeps/unix/sysv/linux/mmap_internal.h | 49 ++++++++++++ .../linux/{i386/mmap.c => s390/mmap_internal.h} | 30 ++++---- sysdeps/unix/sysv/linux/s390/s390-32/mmap.S | 74 ------------------ sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S | 81 -------------------- sysdeps/unix/sysv/linux/s390/s390-64/mmap.S | 78 ------------------- sysdeps/unix/sysv/linux/wordsize-64/mmap.c | 40 ---------- sysdeps/unix/sysv/linux/wordsize-64/mmap64.c | 1 - sysdeps/unix/sysv/linux/wordsize-64/syscalls.list | 1 - .../linux/x86_64/64/{mmap.c => mmap_internal.h} | 9 ++- 25 files changed, 277 insertions(+), 584 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/aarch64/mmap.c delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c delete mode 100644 sysdeps/unix/sysv/linux/hppa/mmap.c delete mode 100644 sysdeps/unix/sysv/linux/m68k/mmap.S delete mode 100644 sysdeps/unix/sysv/linux/m68k/mmap64.c rename sysdeps/unix/sysv/linux/{arm/mmap.c => m68k/mmap_internal.h} (62%) delete mode 100644 sysdeps/unix/sysv/linux/microblaze/mmap.S delete mode 100644 sysdeps/unix/sysv/linux/mips/mips32/mmap.c rename sysdeps/unix/sysv/linux/mips/mips64/n32/{mmap.c => mmap_internal.h} (60%) delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/mmap64.c create mode 100644 sysdeps/unix/sysv/linux/mmap.c create mode 100644 sysdeps/unix/sysv/linux/mmap_internal.h rename sysdeps/unix/sysv/linux/{i386/mmap.c => s390/mmap_internal.h} (57%) delete mode 100644 sysdeps/unix/sysv/linux/s390/s390-32/mmap.S delete mode 100644 sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S delete mode 100644 sysdeps/unix/sysv/linux/s390/s390-64/mmap.S delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/mmap.c delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/mmap64.c rename sysdeps/unix/sysv/linux/x86_64/64/{mmap.c => mmap_internal.h} (88%) -- 2.7.4 diff --git a/posix/tst-mmap-offset.c b/posix/tst-mmap-offset.c index d139c30..385df28 100644 --- a/posix/tst-mmap-offset.c +++ b/posix/tst-mmap-offset.c @@ -1,4 +1,4 @@ -/* BZ #18877 mmap offset test. +/* BZ #18877 and #21270 mmap offset test. Copyright (C) 2015-2017 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -21,18 +21,37 @@ #include #include #include +#include #include -static int -printmsg (int rc, const char *msg) +#include + +static int fd; +static long int page_shift; +static char fname[] = "tst-mmap-offset-XXXXXX"; + +static void +do_prepare (int argc, char **argv) { - printf ("%s failed: %m\n", msg); - return rc; + fd = mkstemp64 (fname); + if (fd < 0) + FAIL_EXIT1 ("mkstemp failed"); + + if (unlink (fname)) + FAIL_EXIT1 ("unlink failed"); + + long sz = sysconf(_SC_PAGESIZE); + if (sz == -1) + sz = 4096L; + page_shift = ffs (sz) - 1; } +#define PREPARE do_prepare + + /* Check if negative offsets are handled correctly by mmap. */ static int -do_test (void) +do_test_bz18877 (void) { const int prot = PROT_READ | PROT_WRITE; const int flags = MAP_SHARED; @@ -40,22 +59,13 @@ do_test (void) const unsigned long offset = 0xace00000; const unsigned long size = offset + length; void *addr; - int fd; - char fname[] = "tst-mmap-offset-XXXXXX"; - - fd = mkstemp64 (fname); - if (fd < 0) - return printmsg (1, "mkstemp"); - - if (unlink (fname)) - return printmsg (1, "unlink"); if (ftruncate64 (fd, size)) - return printmsg (0, "ftruncate64"); + FAIL_RET ("ftruncate64 failed"); addr = mmap (NULL, length, prot, flags, fd, offset); if (MAP_FAILED == addr) - return printmsg (1, "mmap"); + FAIL_RET ("mmap failed"); /* This memcpy is likely to SIGBUS if mmap has messed up with offset. */ memcpy (addr, fname, sizeof (fname)); @@ -63,5 +73,45 @@ do_test (void) return 0; } -#define TEST_FUNCTION do_test () -#include "../test-skeleton.c" +/* Check if invalid offset are handled correctly by mmap. */ +static int +do_test_bz21270 (void) +{ + /* For architectures with sizeof (off_t) < sizeof (off64_t) mmap is + implemented with __SYS_mmap2 syscall and the offset is represented in + multiples of page size. For offset larger than + '1 << (page_shift + 8 * sizeof (off_t))' (that is, 1<<44 on system with + page size of 4096 bytes) the system call silently truncates the offset. + For this case glibc mmap implementation returns EINVAL. */ + const int prot = PROT_READ | PROT_WRITE; + const int flags = MAP_SHARED; + const int64_t offset = 1ULL << (page_shift + 8 * sizeof (uint32_t)); + const size_t length = 4096; + + void *addr = mmap64 (NULL, length, prot, flags, fd, offset); + if (sizeof (off_t) < sizeof (off64_t)) + { + if ((addr != MAP_FAILED) && (errno != EINVAL)) + FAIL_RET ("mmap succeed"); + } + else + { + if (addr == MAP_FAILED) + FAIL_RET ("mmap failed"); + } + + return 0; +} + +int +do_test (void) +{ + int ret = 0; + + ret += do_test_bz18877 (); + ret += do_test_bz21270 (); + + return ret; +} + +#include diff --git a/sysdeps/unix/sysv/linux/aarch64/mmap.c b/sysdeps/unix/sysv/linux/aarch64/mmap.c deleted file mode 100644 index 1dd18f9..0000000 --- a/sysdeps/unix/sysv/linux/aarch64/mmap.c +++ /dev/null @@ -1,34 +0,0 @@ -/* Copyright (C) 2009-2017 Free Software Foundation, Inc. - - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include -#include -#include - -__ptr_t -__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) -{ - return (__ptr_t) INLINE_SYSCALL (mmap, 6, addr, len, prot, flags, fd, offset); -} - -weak_alias (__mmap, mmap) -weak_alias (__mmap, mmap64) -weak_alias (__mmap, __mmap64) diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c deleted file mode 100644 index ebeb79b..0000000 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c +++ /dev/null @@ -1,40 +0,0 @@ -/* Copyright (C) 2011-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Chris Metcalf , 2011. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library. If not, see - . */ - -#include -#include -#include -#include - -#ifndef MMAP_PAGE_UNIT -# define MMAP_PAGE_UNIT 4096UL -#endif - -__ptr_t -__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) -{ - if (offset & (MMAP_PAGE_UNIT - 1)) - { - __set_errno (EINVAL); - return MAP_FAILED; - } - return (__ptr_t) INLINE_SYSCALL (mmap2, 6, addr, len, prot, flags, fd, - offset / MMAP_PAGE_UNIT); -} - -weak_alias (__mmap, mmap) diff --git a/sysdeps/unix/sysv/linux/hppa/mmap.c b/sysdeps/unix/sysv/linux/hppa/mmap.c deleted file mode 100644 index 72957cd..0000000 --- a/sysdeps/unix/sysv/linux/hppa/mmap.c +++ /dev/null @@ -1,49 +0,0 @@ -/* Copyright (C) 1994-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library. If not, see - . */ - -#include -#include -#include - -/* Map addresses starting near ADDR and extending for LEN bytes. From - OFFSET into the file FD describes according to PROT and FLAGS. If ADDR - is nonzero, it is the desired mapping address. If the MAP_FIXED bit is - set in FLAGS, the mapping will be at ADDR exactly (which must be - page-aligned); otherwise the system chooses a convenient nearby address. - The return value is the actual mapping address chosen or MAP_FAILED - for errors (in which case `errno' is set). A successful `mmap' call - deallocates any previous mapping for the affected region. */ - -#include - -__ptr_t -__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) -{ - - __ptr_t ret; - - ret = (__ptr_t) INLINE_SYSCALL (mmap, 6, addr, len, prot, flags, fd, offset); - - /* check if it's really a negative number */ - if(((unsigned long)ret & 0xfffff000) == 0xfffff000) - return MAP_FAILED; - - return ret; - -} - -weak_alias (__mmap, mmap) diff --git a/sysdeps/unix/sysv/linux/m68k/mmap.S b/sysdeps/unix/sysv/linux/m68k/mmap.S deleted file mode 100644 index eb8e071..0000000 --- a/sysdeps/unix/sysv/linux/m68k/mmap.S +++ /dev/null @@ -1,42 +0,0 @@ -/* Copyright (C) 1996-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library. If not, see - . */ - -#include - - .text -ENTRY (__mmap) - - move.l #SYS_ify (mmap), %d0 /* System call number in %d0. */ - - lea 4(%sp), %a0 /* Address of args is 1st arg. */ - move.l %a0, %d1 - - /* Do the system call trap. */ - trap #0 - - /* Kludge: negative numbers are among the legal return values. - If %d0 is between -4096 and 0 then there was an error. */ - cmp.l #-4096, %d0 - jhi SYSCALL_ERROR_LABEL - - /* Successful; return the syscall's value. Copy it to %a0 because - mmap is declared to return a pointer. */ - move.l %d0, %a0 - rts -PSEUDO_END (__mmap) - -weak_alias (__mmap, mmap) diff --git a/sysdeps/unix/sysv/linux/m68k/mmap64.c b/sysdeps/unix/sysv/linux/m68k/mmap64.c deleted file mode 100644 index 8bf8987..0000000 --- a/sysdeps/unix/sysv/linux/m68k/mmap64.c +++ /dev/null @@ -1,5 +0,0 @@ -/* ColdFire and Sun 3 kernels have PAGE_SHIFT set to 13 and expect - mmap2 offset to be provided in 8K pages. Determine the shift - dynamically with getpagesize. */ -#define MMAP2_PAGE_SHIFT -1 -#include diff --git a/sysdeps/unix/sysv/linux/arm/mmap.c b/sysdeps/unix/sysv/linux/m68k/mmap_internal.h similarity index 62% rename from sysdeps/unix/sysv/linux/arm/mmap.c rename to sysdeps/unix/sysv/linux/m68k/mmap_internal.h index 4fe8678..bd8bd38 100644 --- a/sysdeps/unix/sysv/linux/arm/mmap.c +++ b/sysdeps/unix/sysv/linux/m68k/mmap_internal.h @@ -1,4 +1,5 @@ -/* Copyright (C) 2015-2017 Free Software Foundation, Inc. +/* Common mmap definition for Linux implementation. Linux/m68k version. + Copyright (C) 2017 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -15,4 +16,14 @@ License along with the GNU C Library; if not, see . */ -#include +#ifndef MMAP_M68K_INTERNAL_LINUX_H +#define MMAP_M68K_INTERNAL_LINUX_H + +/* ColdFire and Sun 3 kernels have PAGE_SHIFT set to 13 and expect + mmap2 offset to be provided in 8K pages. Determine the shift + dynamically with getpagesize. */ +#define MMAP2_PAGE_SHIFT -1 + +#include_next + +#endif diff --git a/sysdeps/unix/sysv/linux/microblaze/mmap.S b/sysdeps/unix/sysv/linux/microblaze/mmap.S deleted file mode 100644 index 0099993..0000000 --- a/sysdeps/unix/sysv/linux/microblaze/mmap.S +++ /dev/null @@ -1,50 +0,0 @@ -/* Copyright (C) 2009-2017 Free Software Foundation, Inc. - - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include - -#define EINVAL 22 - .text -ENTRY (__mmap) - addik r3,r0,-EINVAL - andi r4,r10,0xfff - bnei r4,L(skip) - addik r12,r0,SYS_ify(mmap2) - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 - sra r10,r10 ; /* mmap2 takes the offset in pages. */ - brki r14,8 - nop -L(skip): - addik r4,r0,-4095 - cmpu r4,r4,r3 - bgei r4,SYSCALL_ERROR_LABEL - rtsd r15,8 - nop -PSEUDO_END (__mmap) - -weak_alias (__mmap, mmap) diff --git a/sysdeps/unix/sysv/linux/mips/mips32/mmap.c b/sysdeps/unix/sysv/linux/mips/mips32/mmap.c deleted file mode 100644 index f30b1da..0000000 --- a/sysdeps/unix/sysv/linux/mips/mips32/mmap.c +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/mmap.c b/sysdeps/unix/sysv/linux/mips/mips64/n32/mmap_internal.h similarity index 60% rename from sysdeps/unix/sysv/linux/mips/mips64/n32/mmap.c rename to sysdeps/unix/sysv/linux/mips/mips64/n32/mmap_internal.h index ca0a5b1..4b65559 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/mmap.c +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/mmap_internal.h @@ -1,4 +1,4 @@ -/* mmap for MIPS n32. +/* Common mmap definition for Linux implementation. MIPS n32 version. Copyright (C) 2016-2017 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -16,20 +16,13 @@ License along with the GNU C Library. If not, see . */ -#include -#include -#include -#include -#include +#ifndef MMAP_MIPS_N32_INTERNAL_H +#define MMAP_MIPS_N32_INTERNAL_H -__ptr_t -__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) -{ - /* To handle negative offsets consistently with other architectures, - the offset must be zero-extended to 64-bit. */ - uint64_t offset_adj = (uint64_t) (uint32_t) offset; - return (__ptr_t) INLINE_SYSCALL (mmap, 6, addr, len, prot, flags, fd, - offset_adj); -} +/* To handle negative offsets consistently with other architectures, + the offset must be zero-extended to 64-bit. */ +#define MMAP_ADJUST_OFFSET(offset) (uint64_t) (uint32_t) offset -weak_alias (__mmap, mmap) +#include_next + +#endif diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list index 7af317f..5f3d047 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list @@ -4,8 +4,6 @@ # return value. lseek64 - lseek i:iii __lseek64 __libc_lseek64 lseek64 llseek -mmap64 - mmap b:aniiii __mmap64 mmap64 - readahead - readahead i:iii __readahead readahead prlimit64 EXTRA prlimit64 i:iipp prlimit64 diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/mmap64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/mmap64.c deleted file mode 100644 index 0dbd384..0000000 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/mmap64.c +++ /dev/null @@ -1 +0,0 @@ -/* mmap64 is the same as mmap. */ diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list index 5b5cfc2..2866420 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list @@ -1,7 +1,5 @@ # File name Caller Syscall name # args Strong name Weak names -mmap - mmap b:aniiii __mmap mmap __mmap64 mmap64 - readahead - readahead i:iii __readahead readahead prlimit EXTRA prlimit64 i:iipp prlimit prlimit64 diff --git a/sysdeps/unix/sysv/linux/mmap.c b/sysdeps/unix/sysv/linux/mmap.c new file mode 100644 index 0000000..e587c6a --- /dev/null +++ b/sysdeps/unix/sysv/linux/mmap.c @@ -0,0 +1,51 @@ +/* mmap - map files or devices into memory. Linux version. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include +#include +#include + +#ifndef __OFF_T_MATCHES_OFF64_T + +/* An architecture may override this. */ +# ifndef MMAP_ADJUST_OFFSET +# define MMAP_ADJUST_OFFSET(offset) offset +# endif + +void * +__mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset) +{ + MMAP_CHECK_PAGE_UNIT + + if (offset & MMAP_OFF_LOW_MASK) + return (__ptr_t) INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); + +#ifdef __NR_mmap2 + return (void *) MMAP_CALL (mmap2, addr, len, prot, flags, fd, + offset / (uint32_t) MMAP2_PAGE_UNIT); +#else + return (void *) MMAP_CALL (mmap, addr, len, prot, flags, fd, + MMAP_ADJUST_OFFSET (offset)); +#endif +} +weak_alias (__mmap, mmap) + +#endif /* __OFF_T_MATCHES_OFF64_T */ diff --git a/sysdeps/unix/sysv/linux/mmap64.c b/sysdeps/unix/sysv/linux/mmap64.c index e823600..91c9a81 100644 --- a/sysdeps/unix/sysv/linux/mmap64.c +++ b/sysdeps/unix/sysv/linux/mmap64.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1999-2017 Free Software Foundation, Inc. +/* mmap - map files or devices into memory. Linux version. + Copyright (C) 1999-2017 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek , 1999. @@ -19,39 +20,41 @@ #include #include #include -#include - #include -#include +#include -/* This is always 12, even on architectures where PAGE_SHIFT != 12. */ -#ifndef MMAP2_PAGE_SHIFT -# define MMAP2_PAGE_SHIFT 12 -#endif -#if MMAP2_PAGE_SHIFT == -1 -static int page_shift; -#else -#define page_shift MMAP2_PAGE_SHIFT -#endif +/* To avoid silent truncation of offset when using mmap2, do not accept + offset larger than 1 << (page_shift + off_t bits). For archictures with + 32 bits off_t and page size of 4096 it would be 1^44. */ +#define MMAP_OFF_HIGH_MASK \ + ((-(MMAP2_PAGE_UNIT << 1) << (8 * sizeof (off_t) - 1))) +#define MMAP_OFF_MASK (MMAP_OFF_HIGH_MASK | MMAP_OFF_LOW_MASK) + +/* An architecture may override this. */ +#ifndef MMAP_PREPARE +# define MMAP_PREPARE(addr, len, prot, flags, fd, offset) +#endif void * __mmap64 (void *addr, size_t len, int prot, int flags, int fd, off64_t offset) { -#if MMAP2_PAGE_SHIFT == -1 - if (page_shift == 0) - { - int page_size = __getpagesize (); - page_shift = __ffs (page_size) - 1; - } -#endif - if (offset & ((1 << page_shift) - 1)) + MMAP_CHECK_PAGE_UNIT + + if (offset & MMAP_OFF_MASK) return (void *) INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); - void *result; - result = (void *) - INLINE_SYSCALL (mmap2, 6, addr, - len, prot, flags, fd, - (off_t) (offset >> page_shift)); - return result; + + MMAP_PREPARE (addr, len, prot, flags, fd, offset); +#ifdef __NR_mmap2 + return (void *) MMAP_CALL (mmap2, addr, len, prot, flags, fd, + (off_t) (offset / MMAP2_PAGE_UNIT)); +#else + return (void *) MMAP_CALL (mmap, addr, len, prot, flags, fd, offset); +#endif } weak_alias (__mmap64, mmap64) + +#ifdef __OFF_T_MATCHES_OFF64_T +weak_alias (__mmap64, mmap) +weak_alias (__mmap64, __mmap) +#endif diff --git a/sysdeps/unix/sysv/linux/mmap_internal.h b/sysdeps/unix/sysv/linux/mmap_internal.h new file mode 100644 index 0000000..70aeb53 --- /dev/null +++ b/sysdeps/unix/sysv/linux/mmap_internal.h @@ -0,0 +1,49 @@ +/* Common mmap definition for Linux implementation. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef MMAP_INTERNAL_LINUX_H +#define MMAP_INTERNAL_LINUX_H 1 + +/* This is the minimum mmap2 unit size accept by the kernel. An architecture + with multiple minimum page sizes (such as m68k) might define it as -1 and + thus it will queried at runtime. */ +#ifndef MMAP2_PAGE_UNIT +# define MMAP2_PAGE_UNIT 4096ULL +#endif + +#if MMAP2_PAGE_UNIT == -1 +static int page_unit; + +# define MMAP_CHECK_PAGE_UNIT \ + if (page_unit == 0) \ + page_unit = __getpagesize (); +#else +# define page_unit MMAP2_PAGE_UNIT +# define MMAP_CHECK_PAGE_UNIT +#endif + +/* Do not accept offset not multiple of page size. */ +#define MMAP_OFF_LOW_MASK (MMAP2_PAGE_UNIT - 1) + +/* An architecture may override this. */ +#ifndef MMAP_CALL +# define MMAP_CALL(__nr, __addr, __len, __prot, __flags, __fd, __offset) \ + INLINE_SYSCALL_CALL (__nr, __addr, __len, __prot, __flags, __fd, __offset) +#endif + +#endif /* MMAP_INTERNAL_LINUX_H */ diff --git a/sysdeps/unix/sysv/linux/i386/mmap.c b/sysdeps/unix/sysv/linux/s390/mmap_internal.h similarity index 57% rename from sysdeps/unix/sysv/linux/i386/mmap.c rename to sysdeps/unix/sysv/linux/s390/mmap_internal.h index abf3a26..2b11ce4 100644 --- a/sysdeps/unix/sysv/linux/i386/mmap.c +++ b/sysdeps/unix/sysv/linux/s390/mmap_internal.h @@ -1,4 +1,5 @@ -/* Copyright (C) 2015-2017 Free Software Foundation, Inc. +/* mmap - map files or devices into memory. Linux/s390 version. + Copyright (C) 2017 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -15,22 +16,17 @@ License along with the GNU C Library; if not, see . */ -#include -#include -#include -#include +#ifndef MMAP_S390_INTERNAL_H +# define MMAP_S390_INTERNAL_H -#ifndef MMAP_PAGE_UNIT -# define MMAP_PAGE_UNIT 4096UL -#endif +#define MMAP_CALL(__nr, __addr, __len, __prot, __flags, __fd, __offset) \ + ({ \ + long int __args[6] = { (long int) (__addr), (long int) (__len), \ + (long int) (__prot), (long int) (__flags), \ + (long int) (__fd), (long int) (__offset) }; \ + INLINE_SYSCALL_CALL (__nr, __args); \ + }) -__ptr_t -__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) -{ - if (offset & (MMAP_PAGE_UNIT - 1)) - return (__ptr_t) INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); - return (__ptr_t) INLINE_SYSCALL (mmap2, 6, addr, len, prot, flags, fd, - offset / MMAP_PAGE_UNIT); -} +#include_next -weak_alias (__mmap, mmap) +#endif diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S b/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S deleted file mode 100644 index 99b56ed..0000000 --- a/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S +++ /dev/null @@ -1,74 +0,0 @@ -/* Copyright (C) 2000-2017 Free Software Foundation, Inc. - Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include - -#define EINVAL 22 - - .text -ENTRY(__mmap) - /* Save registers and setup stack frame. */ - stm %r6,%r15,24(%r15) - cfi_offset (%r15, -36) - cfi_offset (%r14, -40) - cfi_offset (%r13, -44) - cfi_offset (%r12, -48) - cfi_offset (%r11, -52) - cfi_offset (%r10, -56) - cfi_offset (%r9, -60) - cfi_offset (%r8, -64) - cfi_offset (%r7, -68) - cfi_offset (%r6, -72) - lr %r1,%r15 - ahi %r15,-120 /* buy stack space */ - cfi_adjust_cfa_offset (120) - st %r1,0(%r15) /* store back chain */ - - /* Store parameters on stack, because mmap2 - * takes only one parameter: a pointer to the parameter area - */ - st %r6,0x70(%r15) /* Store 'fd'. */ - st %r5,0x6C(%r15) /* Store 'flags'. */ - st %r4,0x68(%r15) /* Store 'prot'. */ - st %r3,0x64(%r15) /* Store 'length'. */ - st %r2,0x60(%r15) /* Store 'start'. */ - l %r1,216(%r15) /* Load offset. */ - - tml %r1,0x0fff /* Offset page aligned ? */ - lhi %r2,-EINVAL - jnz 1f /* No -> EINVAL. */ - srl %r1,12 /* mmap2 takes the offset in pages. */ - st %r1,0x74(%r15) /* Store page offset. */ - la %r2,0x60(%r15) /* Load address of parameter list. */ - svc SYS_ify(mmap2) /* Do the system call trap. */ - -1: l %r15,0(%r15) /* Load back chain. */ - cfi_adjust_cfa_offset (-120) - lm %r6,%r15,24(%r15) /* Load registers. */ - - /* check gpr 2 for error */ - lhi %r0,-4096 - clr %r2,%r0 - jnl SYSCALL_ERROR_LABEL - - /* Successful; return the syscall's value. */ - br %r14 - -PSEUDO_END (__mmap) - -weak_alias (__mmap, mmap) diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S b/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S deleted file mode 100644 index f182578..0000000 --- a/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S +++ /dev/null @@ -1,81 +0,0 @@ -/* Copyright (C) 2000-2017 Free Software Foundation, Inc. - Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include - -#define EINVAL 22 -#define ENOSYS 38 - - .text -ENTRY(__mmap64) - /* Save registers and setup stack frame. */ - stm %r6,%r15,24(%r15) - cfi_offset (%r15, -36) - cfi_offset (%r14, -40) - cfi_offset (%r13, -44) - cfi_offset (%r12, -48) - cfi_offset (%r11, -52) - cfi_offset (%r10, -56) - cfi_offset (%r9, -60) - cfi_offset (%r8, -64) - cfi_offset (%r7, -68) - cfi_offset (%r6, -72) - lr %r1,%r15 - ahi %r15,-120 /* Buy stack space. */ - cfi_adjust_cfa_offset (120) - st %r1,0(%r15) /* Store back chain. */ - - /* Store parameters on stack, because mmap2 - * takes only one parameter: a pointer to the parameter area. */ - st %r6,0x70(%r15) /* Store 'fd'. */ - st %r5,0x6C(%r15) /* Store 'flags'. */ - st %r4,0x68(%r15) /* Store 'prot'. */ - st %r3,0x64(%r15) /* Store 'length'. */ - st %r2,0x60(%r15) /* Store 'start'. */ - - lm %r0,%r1,216(%r15) /* Load 64 bit offset. */ - tml %r1,0x0fff /* Offset page aligned ? */ - jnz 2f /* No -> EINVAL. */ - srdl %r0,12 /* mmap2 takes the offset in pages. */ - ltr %r0,%r0 /* Offset > 2^44 ? */ - jnz 2f - st %r1,0x74(%r15) /* Store page offset. */ - - la %r2,0x60(%r15) /* Load address of parameter list. */ - svc SYS_ify(mmap2) /* Do the system call trap. */ - - l %r15,0(%r15) /* Load back chain. */ - cfi_adjust_cfa_offset (-120) - lm %r6,%r15,24(%r15) /* Load registers. */ - - /* Check gpr 2 for error. */ - lhi %r0,-4096 - clr %r2,%r0 - jnl SYSCALL_ERROR_LABEL - - /* Successful; return the syscall's value. */ - br %r14 - -2: lhi %r2,-EINVAL - l %r15,0(%r15) /* Load back chain. */ - lm %r6,%r15,24(%r15) /* Load registers. */ - j SYSCALL_ERROR_LABEL - -PSEUDO_END (__mmap64) - -weak_alias (__mmap64, mmap64) diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/mmap.S b/sysdeps/unix/sysv/linux/s390/s390-64/mmap.S deleted file mode 100644 index 06d31bb..0000000 --- a/sysdeps/unix/sysv/linux/s390/s390-64/mmap.S +++ /dev/null @@ -1,78 +0,0 @@ -/* Wrapper around mmap system call. 64 bit S/390 version. - Copyright (C) 2001-2017 Free Software Foundation, Inc. - Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include - -#define EINVAL 22 - - .text - -ENTRY(__mmap) - /* Save registers and setup stack frame. */ - stmg %r6,%r15,48(%r15) - cfi_offset (%r15,-40) - cfi_offset (%r14,-48) - cfi_offset (%r13,-56) - cfi_offset (%r12,-64) - cfi_offset (%r11,-72) - cfi_offset (%r10,-80) - cfi_offset (%r9,-88) - cfi_offset (%r8,-96) - cfi_offset (%r7,-104) - cfi_offset (%r6,-112) - lgr %r1,%r15 - lg %r0,8(%r15) /* Load eos. */ - aghi %r15,-208 /* Buy stack space. */ - cfi_adjust_cfa_offset (208) - stg %r1,0(%r15) /* Store back chain. */ - stg %r0,8(%r15) /* Store eos. */ - - /* Store parameters on stack, because old_mmap - takes only one parameter: a pointer to the parameter area. */ - mvc 200(8,%r15),368(%r15) /* Move 'offset'. */ - lgfr %r6,%r6 - stg %r6,192(%r15) /* Store 'fd'. */ - lgfr %r5,%r5 - stg %r5,184(%r15) /* Store 'flags'. */ - lgfr %r4,%r4 - stg %r4,176(%r15) /* Store 'prot'. */ - stg %r3,168(%r15) /* Store 'length'. */ - stg %r2,160(%r15) /* Store 'start'. */ - - la %r2,160(%r15) /* Load address of parameter list. */ - /* Do the system call trap. */ - svc SYS_ify(mmap) - - lg %r15,0(%r15) /* Load back chain. */ - cfi_adjust_cfa_offset (-208) - lmg %r6,%r15,48(%r15) /* Load registers. */ - - /* Check gpr 2 for error. */ - lghi %r0,-4096 - clgr %r2,%r0 - jgnl SYSCALL_ERROR_LABEL - - /* Successful; return the syscall's value. */ - br %r14 - -PSEUDO_END (__mmap) - -weak_alias (__mmap, mmap) -weak_alias (__mmap, mmap64) -weak_alias (__mmap, __mmap64) diff --git a/sysdeps/unix/sysv/linux/wordsize-64/mmap.c b/sysdeps/unix/sysv/linux/wordsize-64/mmap.c deleted file mode 100644 index a784b62..0000000 --- a/sysdeps/unix/sysv/linux/wordsize-64/mmap.c +++ /dev/null @@ -1,40 +0,0 @@ -/* Linux mmap system call. 64-bit version. - Copyright (C) 2015-2017 Free Software Foundation, Inc. - - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include - -/* An architecture may override this. */ -#ifndef MMAP_PREPARE -# define MMAP_PREPARE(addr, len, prot, flags, fd, offset) -#endif - -__ptr_t -__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) -{ - MMAP_PREPARE (addr, len, prot, flags, fd, offset); - return (__ptr_t) INLINE_SYSCALL (mmap, 6, addr, len, prot, flags, - fd, offset); -} - -weak_alias (__mmap, mmap) -weak_alias (__mmap, mmap64) -weak_alias (__mmap, __mmap64) diff --git a/sysdeps/unix/sysv/linux/wordsize-64/mmap64.c b/sysdeps/unix/sysv/linux/wordsize-64/mmap64.c deleted file mode 100644 index 0dbd384..0000000 --- a/sysdeps/unix/sysv/linux/wordsize-64/mmap64.c +++ /dev/null @@ -1 +0,0 @@ -/* mmap64 is the same as mmap. */ diff --git a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list index e71cd7b..0c60647 100644 --- a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list +++ b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list @@ -2,7 +2,6 @@ fstatfs - fstatfs i:ip __fstatfs fstatfs fstatfs64 __fstatfs64 statfs - statfs i:sp __statfs statfs statfs64 -mmap - mmap b:aniiii __mmap mmap __mmap64 mmap64 readahead - readahead i:iii __readahead readahead sendfile - sendfile i:iipi sendfile sendfile64 sync_file_range - sync_file_range Ci:iiii sync_file_range diff --git a/sysdeps/unix/sysv/linux/x86_64/64/mmap.c b/sysdeps/unix/sysv/linux/x86_64/64/mmap_internal.h similarity index 88% rename from sysdeps/unix/sysv/linux/x86_64/64/mmap.c rename to sysdeps/unix/sysv/linux/x86_64/64/mmap_internal.h index 9091b09..06254ef 100644 --- a/sysdeps/unix/sysv/linux/x86_64/64/mmap.c +++ b/sysdeps/unix/sysv/linux/x86_64/64/mmap_internal.h @@ -17,6 +17,9 @@ License along with the GNU C Library; if not, see . */ +#ifndef MMAP_X86_64_INTERNAL_H +#define MMAP_X86_64_INTERNAL_H + #include /* If the Prefer_MAP_32BIT_EXEC bit is set, try to map executable pages @@ -26,7 +29,7 @@ && ((prot) & PROT_EXEC) != 0 \ && HAS_ARCH_FEATURE (Prefer_MAP_32BIT_EXEC)) \ { \ - __ptr_t ret = (__ptr_t) INLINE_SYSCALL (mmap, 6, (addr), (len), \ + void *ret = (void*) INLINE_SYSCALL_CALL (mmap, (addr), (len), \ (prot), \ (flags) | MAP_32BIT, \ (fd), (offset)); \ @@ -34,4 +37,6 @@ return ret; \ } -#include +#include_next + +#endif