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Message-ID: <1479756063.14643.8.camel@caviumnetworks.com> Subject: Re: [PATCH] Use XSTAT_IS_XSTAT64 in generic xstat functions From: Steve Ellcey To: Date: Mon, 21 Nov 2016 11:21:03 -0800 In-Reply-To: <1478811993.4630.87.camel@caviumnetworks.com> References: <1478811993.4630.87.camel@caviumnetworks.com> MIME-Version: 1.0 X-ClientProxiedBy: CO2PR06CA043.namprd06.prod.outlook.com (10.141.242.43) To CO2PR0701MB1061.namprd07.prod.outlook.com (10.160.8.140) X-Microsoft-Exchange-Diagnostics: 1; CO2PR0701MB1061; 2:Wv6sHMwoG6MpLQ4FWb3iIw6qVqzSn1idmzMqzuwRPN1MEFRb/krMrc4vcGxM7Inp7Wa3E9FrWbuPUJUY9W5OveZC6tu5+MXaFt2iYgaPUN1bvAWQ5TUbFQ/hm3mov4V/x/Mona1W7ua0Z6LgFG1Gm6q1vRm0Js74fnFBrwRc3rw=; 3:5l93tIRHl4zKcQ/Xn1yJkE0ZUMpqeWmEv3ctrJfNr6CLG26Zc0Cx0M9HwLOEOl8LflVb2JMECElwv2wk5+/q5lf4ezRYmiyOW6vnhy4I9JlQgJQ9p4xVeMrkYthgx/lcH8jbj7RMdsFhppAKSGMspKJzp/Rjd83QED1ipfDAYoc= X-MS-Office365-Filtering-Correlation-Id: b0a07e66-8c64-4aee-6c16-08d412438c8a X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(22001); 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Tested on x86 and aarch64.  OK to checkin? Steve Ellcey sellcey@caviumnetworks.com 2016-11-21  Yury Norov               Steve Ellcey           * sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c: Do not define         fxstat if XSTAT_IS_XSTAT64 is set to non-zero.         * sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c: Ditto for         fxstatat.         * sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c: Ditto for         lxstat.         * sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c: Ditto for xstat.         * sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat64.c: New file.         * sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat64.c: New file.         * sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c: Make __lxstat         an alias of __lxstat64 if XSTAT_IS_XSTAT64 is set to non-zero.         * sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c: Ditto for         __xstat. diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c index dd52011..0a689a8 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c @@ -25,6 +25,7 @@ #include #include +#if !XSTAT_IS_XSTAT64 #include "overflow.h" /* Get information about the file FD in BUF. */ @@ -43,3 +44,4 @@ __fxstat (int vers, int fd, struct stat *buf) hidden_def (__fxstat) weak_alias (__fxstat, _fxstat); +#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat64.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat64.c index e69de29..bb97a70 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat64.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat64.c @@ -0,0 +1,36 @@ +/* __fxstat64 () implementation. + Copyright (C) 2016 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 + . */ + +/* Hide the prototypes for __fxstat and _fxstat so that GCC will not + complain about the different function signatures if they are aliased + to __fxstat64. If XSTAT_IS_XSTAT64 is set to non-zero then the stat and + stat64 structures have an identical layout but different type names. */ + +#define __fxstat __fxstat_disable +#define _fxstat _fxstat_disable + +#include + +#undef __fxstat +#undef _fxstat +#if XSTAT_IS_XSTAT64 +weak_alias (__fxstat64, __fxstat) +weak_alias (__fxstat64, _fxstat) +hidden_ver (__fxstat64, __fxstat) +#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c index dc7f934..aaed6db 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c @@ -26,6 +26,7 @@ #include #include +#if !XSTAT_IS_XSTAT64 #include "overflow.h" /* Get information about the file NAME in BUF. */ @@ -42,3 +43,4 @@ __fxstatat (int vers, int fd, const char *file, struct stat *buf, int flag) return -1; } libc_hidden_def (__fxstatat) +#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat64.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat64.c index e69de29..dac2ad1 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat64.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat64.c @@ -0,0 +1,37 @@ +/* __fxstatat64 () implementation. + Copyright (C) 2016 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 + . */ + +/* Hide the prototype for __fxstatat so that GCC will not complain about + the different function signature if it is aliased to __fxstatat64. + If XSTAT_IS_XSTAT64 is set to non-zero then the stat and stat64 structures + have an identical layout but different type names. */ + +#define __fxstatat __fxstatat_disable + +#include +#undef _STAT_VER_LINUX +#define _STAT_VER_LINUX _STAT_VER_KERNEL + +#include + +#undef __fxstatat +#if XSTAT_IS_XSTAT64 +weak_alias (__fxstatat64, __fxstatat) +libc_hidden_ver (__fxstatat64, __fxstatat) +#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c index 395f98b..dd0338b 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c @@ -25,6 +25,7 @@ #include #include +#if !XSTAT_IS_XSTAT64 #include "overflow.h" /* Get information about the file NAME in BUF. */ @@ -41,3 +42,4 @@ __lxstat (int vers, const char *name, struct stat *buf) return -1; } hidden_def (__lxstat) +#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c index e1c15a8..7407c6b 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c @@ -16,6 +16,13 @@ License along with the GNU C Library. If not, see . */ +/* Hide the prototype for __lxstat so that GCC will not complain about + the different function signature if it is aliased to __lxstat64. + If XSTAT_IS_XSTAT64 is set to non-zero then the stat and stat64 + structures have an identical layout but different type names. */ + +#define __lxstat __lxstat_disable + #include #include #include @@ -36,3 +43,9 @@ __lxstat64 (int vers, const char *name, struct stat64 *buf) return -1; } hidden_def (__lxstat64) + +#undef __lxstat +#if XSTAT_IS_XSTAT64 +strong_alias (__lxstat64, __lxstat) +hidden_ver (__lxstat64, __lxstat) +#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c index fdd2cb0..b776e31 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c @@ -25,6 +25,7 @@ #include #include +#if !XSTAT_IS_XSTAT64 #include "overflow.h" /* Get information about the file NAME in BUF. */ @@ -41,3 +42,4 @@ __xstat (int vers, const char *name, struct stat *buf) return -1; } hidden_def (__xstat) +#endif diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c index 2252337..e710931 100644 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c +++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c @@ -16,6 +16,13 @@ License along with the GNU C Library. If not, see . */ +/* Hide the prototype for __xstat so that GCC will not complain about + the different function signature if it is aliased to __xstat64. + If XSTAT_IS_XSTAT64 is set to non-zero then the stat and stat64 + structures have an identical layout but different type names. */ + +#define __xstat __xstat_disable + #include #include #include @@ -36,3 +43,9 @@ __xstat64 (int vers, const char *name, struct stat64 *buf) return -1; } hidden_def (__xstat64) + +#undef __xstat +#if XSTAT_IS_XSTAT64 +strong_alias (__xstat64, __xstat) +hidden_ver (__xstat64, __xstat) +#endif