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From: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr>
To: libc-alpha@sourceware.org
Cc: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr>
Subject: [RFC PATCH 27/52] Y2038: add function __fstatat64_t64 (and __fxstatat_t64)
Date: Thu, 07 Sep 2017 22:44:00 -0000	[thread overview]
Message-ID: <20170907224219.12483-28-albert.aribaud@3adev.fr> (raw)
In-Reply-To: <20170907224219.12483-27-albert.aribaud@3adev.fr>

There is no Y2038-proof linux struct stat for now, so these
implementations just use the existing syscalls and convert from kernel
32-bit-time struct stat64 to GLIBC Y2038-ready struct __stat64_t64.

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
---
 include/sys/stat.h                   |  4 +++
 io/Versions                          |  1 +
 io/fstatat64.c                       |  7 +++++
 sysdeps/unix/sysv/linux/fxstatat64.c | 54 ++++++++++++++++++++++++++++++++++++
 4 files changed, 66 insertions(+)

diff --git a/include/sys/stat.h b/include/sys/stat.h
index 9b0782a9a4..71f6d63e3e 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -43,6 +43,10 @@ extern int __xstat64_t64 (int __ver, const char *__filename,
                           struct __stat64_t64 *__stat_buf);
 extern int __lxstat64_t64 (int __ver, const char *__filename,
 		           struct __stat64_t64 *__stat_buf);
+extern int __fxstatat64_t64 (int __ver, int __fildes,
+                             const char *__filename,
+			     struct __stat64_t64 *__stat_buf,
+                             int __flag);
 #if IS_IN (libc) || IS_IN (rtld)
 hidden_proto (__fxstat)
 hidden_proto (__fxstat64)
diff --git a/io/Versions b/io/Versions
index fcd1b71f80..33629a0d4e 100644
--- a/io/Versions
+++ b/io/Versions
@@ -133,5 +133,6 @@ libc {
     __fxstat64_t64;
     __xstat64_t64;
     __lxstat64_t64;
+    __fxstatat64_t64;
   }
 }
diff --git a/io/fstatat64.c b/io/fstatat64.c
index 13a9ebc870..4e13f072ff 100644
--- a/io/fstatat64.c
+++ b/io/fstatat64.c
@@ -50,3 +50,10 @@ fstatat64 (int fd, const char *file, struct stat64 *buf, int flag)
 {
   return __fxstatat64 (_STAT_VER, fd, file, buf, flag);
 }
+
+int
+attribute_hidden
+__fstatat64_t64 (int fd, const char *file, struct __stat64_t64 *buf, int flag)
+{
+  return __fxstatat64_t64 (_STAT_VER, fd, file, buf, flag);
+}
diff --git a/sysdeps/unix/sysv/linux/fxstatat64.c b/sysdeps/unix/sysv/linux/fxstatat64.c
index ef1e132c11..070ed78861 100644
--- a/sysdeps/unix/sysv/linux/fxstatat64.c
+++ b/sysdeps/unix/sysv/linux/fxstatat64.c
@@ -26,6 +26,8 @@
 #include <sysdep.h>
 #include <sys/syscall.h>
 
+#include <xstatconv.h>
+
 /* Get information about the file NAME in BUF.  */
 
 int
@@ -45,3 +47,55 @@ __fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
 								      err));
 }
 libc_hidden_def (__fxstatat64)
+
+/* 64-bit time version */
+
+extern int __y2038_linux_support;
+
+int
+__fxstatat64_t64 (int vers, int fd, const char *file, struct __stat64_t64 *buf, int flag)
+{
+  if (__glibc_unlikely (vers != _STAT_VER_LINUX))
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+  int result;
+  struct stat64 st64;
+  INTERNAL_SYSCALL_DECL (err);
+
+  if (__y2038_linux_support)
+    {
+      // TODO: use 64-bit syscalls when they become available
+    }
+
+  result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, &st64, flag);
+  if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+    {
+      buf->st_dev          = st64.st_dev;
+      buf->__pad1		     = st64.__pad1;
+    
+      buf->__st_ino        = st64.__st_ino;
+      buf->st_mode         = st64.st_mode;
+      buf->st_nlink        = st64.st_nlink;
+      buf->st_uid          = st64.st_uid;		 
+      buf->st_gid          = st64.st_gid;		 
+      buf->st_rdev         = st64.st_rdev;		 
+      buf->__pad2          = st64.__pad2;
+      buf->st_size         = st64.st_size;		 
+      buf->st_blksize      = st64.st_blksize;
+    
+      buf->st_blocks       = st64.st_blocks;		
+      buf->st_atim.tv_sec  = st64.st_atim.tv_sec;	
+      buf->st_atim.tv_nsec = st64.st_atim.tv_nsec;	
+      buf->st_mtim.tv_sec  = st64.st_mtim.tv_sec;	
+      buf->st_mtim.tv_nsec = st64.st_mtim.tv_nsec;	
+      buf->st_ctim.tv_sec  = st64.st_ctim.tv_sec;	
+      buf->st_ctim.tv_nsec = st64.st_ctim.tv_nsec;	
+    
+      buf->st_ino          = st64.st_ino;
+    
+      return 0;
+    }
+  else
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (result,
+								      err));
+}
-- 
2.11.0

  reply	other threads:[~2017-09-07 22:44 UTC|newest]

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-07 22:42 [RFC PATCH 00/52] Make GLIBC Y2038-proof Albert ARIBAUD (3ADEV)
2017-09-07 22:42 ` [RFC PATCH 01/52] Y2038: add type __time64_t Albert ARIBAUD (3ADEV)
2017-09-07 22:42   ` [RFC PATCH 02/52] Y2038: add function __difftime64 Albert ARIBAUD (3ADEV)
2017-09-07 22:42     ` [RFC PATCH 03/52] Y2038: add functions using struct tm Albert ARIBAUD (3ADEV)
2017-09-07 22:42       ` [RFC PATCH 04/52] Y2038: add function __mktime64 (and timelocal) Albert ARIBAUD (3ADEV)
2017-09-07 22:42         ` [RFC PATCH 05/52] Y2038: add function __timegm64 Albert ARIBAUD (3ADEV)
2017-09-07 22:42           ` [RFC PATCH 06/52] Y2038: add struct __timespec64 Albert ARIBAUD (3ADEV)
2017-09-07 22:42             ` [RFC PATCH 07/52] Y2038: add function __clock_gettime64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43               ` [RFC PATCH 08/52] Y2038: add function __clock_settime64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                 ` [RFC PATCH 09/52] Y2038: add function __clock_getres64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                   ` [RFC PATCH 10/52] Y2038: add function __clock_nanosleep64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                     ` [RFC PATCH 11/52] Y2038: add function __timespec_get64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                       ` [RFC PATCH 12/52] Y2038: add function __futimens64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                         ` [RFC PATCH 13/52] Y2038: add function __utimensat64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                           ` [RFC PATCH 14/52] Y2038: add function __sigtimedwait64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                             ` [RFC PATCH 15/52] Y2038: add struct __timeval64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                               ` [RFC PATCH 16/52] Y2038: add function __futimes64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                                 ` [RFC PATCH 17/52] Y2038: add function __lutimes64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                                   ` [RFC PATCH 18/52] Y2038: add struct __itimerspec64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                                     ` [RFC PATCH 19/52] Y2038: add function __timer_gettime64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                                       ` [RFC PATCH 20/52] Y2038: add function __timer_settime64 Albert ARIBAUD (3ADEV)
2017-09-07 22:43                                         ` [RFC PATCH 21/52] Y2038: add function __timerfd_gettime64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                           ` [RFC PATCH 22/52] Y2038: add function __timerfd_settime64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                             ` [RFC PATCH 23/52] Y2038: add struct __stat64_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                               ` [RFC PATCH 24/52] Y2038: add function __fstat64_t64 (and __fxstat64_t64) Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                 ` [RFC PATCH 25/52] Y2038: add function __stat64_t64 (and __xstat64_t64) Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                   ` [RFC PATCH 26/52] Y2038: add function __lstat64_t64 (and __lxstat64_t64) Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                     ` Albert ARIBAUD (3ADEV) [this message]
2017-09-07 22:44                                                       ` [RFC PATCH 28/52] Y2038: add function __time_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                         ` [RFC PATCH 29/52] Y2038: add function __stime_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                           ` [RFC PATCH 30/52] Y2038: add function __utimes_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                             ` [RFC PATCH 31/52] Y2038: add function __gettimeofday_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                               ` [RFC PATCH 32/52] Y2038: add function __settimeofday_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                                 ` [RFC PATCH 33/52] Y2038: add function __mq_timedsend_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                                   ` [RFC PATCH 34/52] Y2038: add function __mq_timedreceive_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:44                                                                     ` [RFC PATCH 35/52] Y2038: add function __msgctl_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                       ` [RFC PATCH 36/52] Y2038: add function __sched_rr_get_interval_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                         ` [RFC PATCH 37/52] Y2038: add function __nanosleep64_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                           ` [RFC PATCH 38/52] Y2038: add function __adjtime_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                             ` [RFC PATCH 39/52] Y2038: add function __utime_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                               ` [RFC PATCH 40/52] Y2038: add struct __itimerval_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                 ` [RFC PATCH 41/52] Y2038: add function __getitimer_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                   ` [RFC PATCH 42/52] Y2038: add function __setitimer_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                     ` [RFC PATCH 43/52] Y2038: add functions using futexes Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                       ` [RFC PATCH 44/52] Y2038: add function __getrusage_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                         ` [RFC PATCH 45/52] Y2038: add struct __ntp_timeval_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                           ` [RFC PATCH 46/52] Y2038: add function __ntp_gettime_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                             ` [RFC PATCH 47/52] Y2038: add function __ntp_gettimex_t64 Albert ARIBAUD (3ADEV)
2017-09-07 22:45                                                                                               ` [RFC PATCH 48/52] Y2038: add function __adjtimex_t64 (and __ntp_adjtime_t64) Albert ARIBAUD (3ADEV)
2017-09-07 22:46                                                                                                 ` [RFC PATCH 49/52] Y2038: add function pselect Albert ARIBAUD (3ADEV)
2017-09-08 17:49                                                                                                   ` [RFC PATCH 50/52] Y2038: add function select Albert ARIBAUD (3ADEV)
2017-09-08 17:49                                                                                                     ` [RFC PATCH 51/52] Y2038: add RPC functions Albert ARIBAUD (3ADEV)
2017-09-08 17:49                                                                                                       ` [RFC PATCH 52/52] Y2038: add _TIME_BITS==64 support Albert ARIBAUD (3ADEV)
2017-09-08 19:47                                                                                                         ` Joseph Myers
2017-09-08 19:47                                                                                                       ` [RFC PATCH 51/52] Y2038: add RPC functions Joseph Myers
2017-09-08 19:59                                                                                                       ` Paul Eggert
2017-09-09 14:37                                                                                                         ` Albert ARIBAUD
2017-09-11  6:33                                                                                                           ` Paul Eggert
2017-09-11  7:06                                                                                                         ` Paul Eggert
2017-09-11 14:07                                                                                                           ` Paul Eggert
2017-09-11 15:59                                                                                                             ` Albert ARIBAUD
2017-09-07 23:21 ` [RFC PATCH 00/52] Make GLIBC Y2038-proof Joseph Myers
2017-09-08 16:19   ` Zack Weinberg
2017-09-08 16:43     ` Joseph Myers
2017-09-08 16:54       ` Paul Eggert
2017-09-08 17:01       ` Zack Weinberg
2017-09-08 17:24         ` Joseph Myers
2017-09-08 18:32           ` Zack Weinberg
2017-09-08 17:42     ` Albert ARIBAUD
2017-09-08 17:59       ` Joseph Myers
2017-09-08 18:16         ` Albert ARIBAUD
2017-09-08 18:36           ` Zack Weinberg
2017-09-08 17:08   ` Albert ARIBAUD
2017-09-08 17:26     ` Joseph Myers
2017-09-08 19:19       ` Albert ARIBAUD
2017-09-08  4:23 ` Albert ARIBAUD

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