From patchwork Mon Jun 27 19:34:33 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella X-Patchwork-Id: 13410 Received: (qmail 43506 invoked by alias); 27 Jun 2016 19:34:56 -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 43492 invoked by uid 89); 27 Jun 2016 19:34:55 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.2 spammy=adhemerval, Adhemerval, Zanella, 2414 X-HELO: mail-qk0-f181.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id; bh=AMZCH0VRqnc8nuuuzxZL3HGQdVYr8pOZuQXQZW0yTF0=; b=OBrU4Zv0wfrjKjJmSJATn01Oimp1nj9eAaOcwLz4q9YLwuZeRw+v0pkGAmxgNbXW58 OvHozIANeibWgfaNFwYajgCvLmxvmn60txBNlTxUtC8f8gfkqW2exFDzbDBgAClJykrv qvKenRndU+ysgNj7RBdxeLo7BQJUm6VySo9rATqX9HqJ7vk7ToV9TlWdPXltGou0iYsz v5ImpFBeccwRSt7Ju55FNvaZQHcIN4Dk6QVYf390+l7nB0P/PLUjVy3bL6roxL/I4hj0 Z1AE7SGZISKBSqVdA3ZlrfrNmiWjV0YEs9V4NupbW/+a9ul+x8GKTUHnNgZIWycajLrT d5YA== X-Gm-Message-State: ALyK8tKc2ohfCMsidctmWo8t52wKFvhGpsRikF4/Yy5rrrGlY8QH5puiWp51kxO2T9AEZyKV X-Received: by 10.13.195.66 with SMTP id f63mr12085189ywd.19.1467056082459; Mon, 27 Jun 2016 12:34:42 -0700 (PDT) From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH] Consolidate fallocate/fallocate64 implementations Date: Mon, 27 Jun 2016 16:34:33 -0300 Message-Id: <1467056073-8061-1-git-send-email-adhemerval.zanella@linaro.org> This patch consolidates all the fallocate{64} implementation for Linux in only one (sysdeps/unix/sysv/linux/fallocate{64}.c). It also removes the syscall from the auto-generation using assembly macros. The new macro SYSCALL_LL{64} is used to handle the offset argument, using the same strategy used in previous p{read,write}{64} consolidation: 1. Each architecture/ABI defines if its a ILP32 (__ASSUME_WORDSIZE64_ILP32) and if off64_t differs in size of off_t (__ASSUME_OFF_DIFF_OFF64). Currently, x32 defines __ASSUME_WORDSIZE64_ILP32 and only MIPS64-n32 defines both __ASSUME_WORDSIZE64_ILP32 and __ASSUME_OFF_DIFF_OFF64. 2. For the default function implementation (without the 64 suffix) the symbol will be built if is 32-bits (__WORDSIZE == 64) or if off_t differs in size from off64_t (__ASSUME_OFF_DIFF_OFF64). It means that for architecture that only pass 64-bit off_t this symbol won't be build. 3. The 64 variant of the function implementation (with the 64 suffix) will be always build and a weak alias for the non-suffix variant will be created if __WORDSIZE == 64 and if size of off64_t differs from off_t. Checked on x86_64, x32, i386, aarch64, and ppc64le. * sysdeps/unix/sysv/linux/fallocate.c (fallocate): Use SYSCALL_LL macro on offset argument. * sysdeps/unix/sysv/linux/fallocate64.c (fallocate64): Use SYSCALL_LL64 on offset argument. * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c: Remove file. * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/fallocate.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (fallocate): Remove syscall auto-generation. * sysdeps/unix/sysv/linux/Makefile (test): Add tst-fallocate and tst-fallocate64. * sysdeps/unix/sysv/linux/tst-fallocate.c: New file. * sysdeps/unix/sysv/linux/tst-fallocate64.c: Likewise. --- ChangeLog | 19 ++++ sysdeps/unix/sysv/linux/Makefile | 3 +- sysdeps/unix/sysv/linux/fallocate.c | 11 +- sysdeps/unix/sysv/linux/fallocate64.c | 14 +-- .../unix/sysv/linux/mips/mips64/n32/fallocate.c | 33 ------ .../unix/sysv/linux/mips/mips64/n32/fallocate64.c | 33 ------ .../unix/sysv/linux/mips/mips64/n64/fallocate.c | 1 - .../unix/sysv/linux/mips/mips64/n64/fallocate64.c | 1 - sysdeps/unix/sysv/linux/tst-fallocate.c | 117 +++++++++++++++++++++ sysdeps/unix/sysv/linux/tst-fallocate64.c | 21 ++++ sysdeps/unix/sysv/linux/wordsize-64/fallocate.c | 34 ------ sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c | 1 - sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list | 1 - 13 files changed, 167 insertions(+), 122 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate.c create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate64.c delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/fallocate.c delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c diff --git a/ChangeLog b/ChangeLog index 0847c8d..8118f43 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,22 @@ +2016-06-27 Adhemerval Zanella + + * sysdeps/unix/sysv/linux/fallocate.c (fallocate): Use SYSCALL_LL + macro on offset argument. + * sysdeps/unix/sysv/linux/fallocate64.c (fallocate64): Use + SYSCALL_LL64 on offset argument. + * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c: Remove file. + * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c: Likewise. + * sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c: Likewise. + * sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c: Likewise. + * sysdeps/unix/sysv/linux/wordsize-64/fallocate.c: Likewise. + * sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c: Likewise. + * sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (fallocate): Remove + syscall auto-generation. + * sysdeps/unix/sysv/linux/Makefile (test): Add tst-fallocate and + tst-fallocate64. + * sysdeps/unix/sysv/linux/tst-fallocate.c: New file. + * sysdeps/unix/sysv/linux/tst-fallocate64.c: Likewise. + 2016-06-21 Aurelien Jarno * sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Rename into diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 35e1ed4..d966a5f 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -42,7 +42,8 @@ sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \ bits/socket_type.h bits/syscall.h bits/sysctl.h \ bits/mman-linux.h -tests += tst-clone tst-clone2 tst-fanotify tst-personality +tests += tst-clone tst-clone2 tst-fanotify tst-personality tst-fallocate \ + tst-fallocate64 # Generate the list of SYS_* macros for the system calls (__NR_* macros). diff --git a/sysdeps/unix/sysv/linux/fallocate.c b/sysdeps/unix/sysv/linux/fallocate.c index 6a58a5f..e648a73 100644 --- a/sysdeps/unix/sysv/linux/fallocate.c +++ b/sysdeps/unix/sysv/linux/fallocate.c @@ -19,17 +19,12 @@ #include #include - +#if __WORDSIZE != 64 || defined (__ASSUME_OFF_DIFF_OFF64) /* Reserve storage for the data of the file associated with FD. */ int fallocate (int fd, int mode, __off_t offset, __off_t len) { -#ifdef __NR_fallocate return SYSCALL_CANCEL (fallocate, fd, mode, - __LONG_LONG_PAIR (offset >> 31, offset), - __LONG_LONG_PAIR (len >> 31, len)); -#else - __set_errno (ENOSYS); - return -1; -#endif + SYSCALL_LL (offset), SYSCALL_LL (len)); } +#endif diff --git a/sysdeps/unix/sysv/linux/fallocate64.c b/sysdeps/unix/sysv/linux/fallocate64.c index 8e76d6f..176caa8 100644 --- a/sysdeps/unix/sysv/linux/fallocate64.c +++ b/sysdeps/unix/sysv/linux/fallocate64.c @@ -24,14 +24,10 @@ int fallocate64 (int fd, int mode, __off64_t offset, __off64_t len) { -#ifdef __NR_fallocate return SYSCALL_CANCEL (fallocate, fd, mode, - __LONG_LONG_PAIR ((long int) (offset >> 32), - (long int) offset), - __LONG_LONG_PAIR ((long int) (len >> 32), - (long int) len)); -#else - __set_errno (ENOSYS); - return -1; -#endif + SYSCALL_LL64 (offset), SYSCALL_LL64 (len)); } + +#if __WORDSIZE == 64 && !defined (__ASSUME_OFF_DIFF_OFF64) +weak_alias (fallocate64, fallocate) +#endif diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c b/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c deleted file mode 100644 index 4e432f4..0000000 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c +++ /dev/null @@ -1,33 +0,0 @@ -/* Copyright (C) 2007-2016 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 - - -/* Reserve storage for the data of the file associated with FD. */ -int -fallocate (int fd, int mode, __off_t offset, __off_t len) -{ -#ifdef __NR_fallocate - return SYSCALL_CANCEL (fallocate, fd, mode, offset, len); -#else - __set_errno (ENOSYS); - return -1; -#endif -} diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c b/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c deleted file mode 100644 index 95c9eab..0000000 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c +++ /dev/null @@ -1,33 +0,0 @@ -/* Copyright (C) 2007-2016 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 - - -/* Reserve storage for the data of the file associated with FD. */ -int -fallocate64 (int fd, int mode, __off64_t offset, __off64_t len) -{ -#ifdef __NR_fallocate - return SYSCALL_CANCEL (fallocate, fd, mode, offset, len); -#else - __set_errno (ENOSYS); - return -1; -#endif -} diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c deleted file mode 100644 index d3b7218..0000000 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c deleted file mode 100644 index fb2b681..0000000 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c +++ /dev/null @@ -1 +0,0 @@ -/* fallocate64 is in fallocate.c */ diff --git a/sysdeps/unix/sysv/linux/tst-fallocate.c b/sysdeps/unix/sysv/linux/tst-fallocate.c new file mode 100644 index 0000000..f1718e0 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-fallocate.c @@ -0,0 +1,117 @@ +/* Basic fallocate test (no specific flags is checked). + Copyright (C) 2016 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 + +/* Allow testing of the 64-bit versions as well. */ +#ifndef FALLOCATE +# define FALLOCATE fallocate +#endif + +static void do_prepare (void); +static int do_test (void); +#define PREPARE(argc, argv) do_prepare () +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" + +static char *temp_filename; +static int temp_fd; + +void +do_prepare (void) +{ + temp_fd = create_temp_file ("tst-fallocate.", &temp_filename); + if (temp_fd == -1) + { + printf ("cannot create temporary file: %m\n"); + exit (1); + } +} + +#define FAIL(str) \ + do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0) + +int +do_test (void) +{ + int ret; + struct stat finfo; + char buffer[1024] = { 0xf0 }; + char buf2read[1024]; + + /* It tries to fallocate 1024 bytes from offset 0 and then write 1024 bytes. + After both operation rewind the file descriptor and read 1024 bytes + and check if both buffer have the same contents. */ + ret = FALLOCATE (temp_fd, 0, 0, 1024); + if (ret == -1) + FAIL ("fallocate failed"); + + ret = fstat (temp_fd, &finfo); + if (ret == -1) + FAIL ("fstat failed"); + + if (finfo.st_size < 1024) + FAIL ("size of first fallocate less than expected (1024)"); + + if (lseek (temp_fd, 0, SEEK_SET) == (off_t) -1) + FAIL ("fseek (0, SEEK_SET) failed"); + + if (write (temp_fd, buffer, 1024) != 1024) + FAIL ("fail trying to write 1024 bytes"); + + if (lseek (temp_fd, 0, SEEK_SET) == (off_t) -1) + FAIL ("fseek (0, SEEK_SET) failed"); + + if (read (temp_fd, buf2read, 1024) != 1024) + FAIL ("fail trying to read 1024 bytes"); + + if (memcmp (buffer, buf2read, 1024) != 0) + FAIL ("buffer writted different than buffer readed"); + + /* It issues the same test as before but using a 1024 bytes offset. */ + ret = FALLOCATE (temp_fd, 0, 1024, 2048); + if (ret == -1) + FAIL ("fallocate failed"); + + ret = fstat (temp_fd, &finfo); + if (ret == -1) + FAIL ("fstat failed"); + + if (finfo.st_size < (1024 + 2048)) + FAIL ("size of second fallocate less than expected (1024 + 2048)"); + + if (lseek (temp_fd, 2048, SEEK_SET) == (off_t) -1) + FAIL ("fseek (2048, SEEK_SET) failed"); + + if (write (temp_fd, buffer, 1024) != 1024) + FAIL ("fail trying to write 1024 bytes"); + + if (lseek (temp_fd, 2048, SEEK_SET) == (off_t) -1) + FAIL ("fseek (2048, SEEK_SET) failed"); + + if (read (temp_fd, buf2read, 1024) != 1024) + FAIL ("fail trying to read 1024 bytes"); + + if (memcmp (buffer, buf2read, 1024) != 0) + FAIL ("buffer writted different than buffer readed"); + + return 0; +} diff --git a/sysdeps/unix/sysv/linux/tst-fallocate64.c b/sysdeps/unix/sysv/linux/tst-fallocate64.c new file mode 100644 index 0000000..649f653 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-fallocate64.c @@ -0,0 +1,21 @@ +/* Basic fallocate64 test (no specific flags is checked). + Copyright (C) 2016 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 + . */ + +#define FALLOCATE fallocate64 + +#include "tst-fallocate.c" diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c b/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c deleted file mode 100644 index c1dd0b4..0000000 --- a/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c +++ /dev/null @@ -1,34 +0,0 @@ -/* Copyright (C) 2007-2016 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 - - -/* Reserve storage for the data of the file associated with FD. */ -int -fallocate (int fd, int mode, __off_t offset, __off_t len) -{ -#ifdef __NR_fallocate - return SYSCALL_CANCEL (fallocate, fd, mode, offset, len); -#else - __set_errno (ENOSYS); - return -1; -#endif -} -strong_alias (fallocate, fallocate64) diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c b/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c deleted file mode 100644 index df33112..0000000 --- a/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c +++ /dev/null @@ -1 +0,0 @@ -/* fallocate64 is in posix_fallocate.c */ diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list index dce4302..8cccb1d 100644 --- a/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list +++ b/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list @@ -1,6 +1,5 @@ # File name Caller Syscall name # args Strong name Weak names -fallocate - fallocate Ci:iiii fallocate fallocate64 gettimeofday - gettimeofday:__vdso_gettimeofday@LINUX_2.6 i:pP __gettimeofday gettimeofday personality EXTRA personality Ei:i __personality personality posix_fadvise - fadvise64 Vi:iiii posix_fadvise posix_fadvise64