From: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
Date: Thu, 7 Sep 2017 22:41:53 +0000 (+0200)
Subject: Y2038: add function __lstat64_time64 (and __lxstat64_time64)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17e59e4743d1f69a831a663321adb25ab7e555c5;p=thirdparty%2Fglibc.git

Y2038: add function __lstat64_time64 (and __lxstat64_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 186df0c7927..72aca27341d 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -40,6 +40,8 @@ extern int __fxstat64_time64 (int __ver, int __fildes,
 			      struct __stat64_t64 *__stat_buf);
 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);
 
 #if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN)
 hidden_proto (__fxstat)
diff --git a/io/Versions b/io/Versions
index 821e375bae4..46f9d4cd6c2 100644
--- a/io/Versions
+++ b/io/Versions
@@ -135,6 +135,7 @@ libc {
   GLIBC_2.29 {
     __fxstat64_time64;
     __xstat64_time64;
+    __lxstat64_time64;
   }
   GLIBC_PRIVATE {
     __libc_fcntl64;
diff --git a/io/lstat64.c b/io/lstat64.c
index c3eb7a76f59..96ce9998b23 100644
--- a/io/lstat64.c
+++ b/io/lstat64.c
@@ -50,3 +50,10 @@ lstat64 (const char *file, struct stat64 *buf)
 {
   return __lxstat64 (_STAT_VER, file, buf);
 }
+
+int
+attribute_hidden
+__lstat64_time64 (const char *file, struct __stat64_t64 *buf)
+{
+  return __lxstat64_time64 (_STAT_VER, file, buf);
+}
diff --git a/sysdeps/unix/sysv/linux/lxstat64.c b/sysdeps/unix/sysv/linux/lxstat64.c
index d05fa145374..0c554077914 100644
--- a/sysdeps/unix/sysv/linux/lxstat64.c
+++ b/sysdeps/unix/sysv/linux/lxstat64.c
@@ -50,3 +50,44 @@ hidden_ver (___lxstat64, __lxstat64)
 strong_alias (___lxstat64, __lxstat64);
 hidden_def (__lxstat64)
 #endif
+
+/* 64-bit time version */
+
+int
+__lxstat64_time64 (int vers, const char *name, struct __stat64_t64 *buf)
+{
+  int result;
+  struct stat64 st64;
+
+  result = INLINE_SYSCALL (lstat64, 2, name, &st64);
+#if defined _HAVE_STAT64___ST_INO && !__ASSUME_ST_INO_64_BIT
+  if (__builtin_expect (!result, 1) && st64.__st_ino != (__ino_t) st64.st_ino)
+    st64.st_ino = st64.__st_ino;
+#endif
+  if (!result)
+    {
+      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 result;
+}