From: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
Date: Thu, 7 Sep 2017 22:41:54 +0000 (+0200)
Subject: Y2038: add function __fstatat64_time64 (and __fxstatat_time64)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d01a328977e00c789f55fc84060daf66b48d0e64;p=thirdparty%2Fglibc.git

Y2038: add function __fstatat64_time64 (and __fxstatat_time64)

These implementations just use the existing syscalls and convert from
kernel 32-bit-time struct stat64 to GLIBC Y2038-ready struct __stat64_t64.
---

diff --git a/include/sys/stat.h b/include/sys/stat.h
index 72aca27341d..d267dd07228 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -42,6 +42,10 @@ extern int __xstat64_time64 (int __ver, const char *__filename,
 			     struct __stat64_t64 *__stat_buf);
 extern int __lxstat64_time64 (int __ver, const char *__filename,
 			      struct __stat64_t64 *__stat_buf);
+extern int __fxstatat64_time64 (int __ver, int __fildes,
+				const char *__filename,
+				struct __stat64_t64 *__stat_buf,
+				int __flag);
 
 #if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN)
 hidden_proto (__fxstat)
diff --git a/io/Versions b/io/Versions
index 46f9d4cd6c2..90956fed00f 100644
--- a/io/Versions
+++ b/io/Versions
@@ -136,6 +136,7 @@ libc {
     __fxstat64_time64;
     __xstat64_time64;
     __lxstat64_time64;
+    __fxstatat64_time64;
   }
   GLIBC_PRIVATE {
     __libc_fcntl64;
diff --git a/io/fstatat64.c b/io/fstatat64.c
index f4f46a95748..b7efd898739 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_time64 (int fd, const char *file, struct __stat64_t64 *buf, int flag)
+{
+  return __fxstatat64_time64 (_STAT_VER, fd, file, buf, flag);
+}
diff --git a/sysdeps/unix/sysv/linux/fxstatat64.c b/sysdeps/unix/sysv/linux/fxstatat64.c
index baa9a60a666..2c04e66b1cd 100644
--- a/sysdeps/unix/sysv/linux/fxstatat64.c
+++ b/sysdeps/unix/sysv/linux/fxstatat64.c
@@ -45,3 +45,48 @@ __fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
 								      err));
 }
 libc_hidden_def (__fxstatat64)
+
+/* 64-bit time version */
+
+int
+__fxstatat64_time64 (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);
+
+  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;
+    
+#if defined _HAVE_STAT64___ST_INO
+      buf->__st_ino        = st64.__st_ino;
+#endif
+      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->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));
+}