Y2038: add function __fstat64_time64 (and __fxstat64_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 0f2a6622e6291b0242757635bef6d3d1cf07b2b0..c00f7b46d75ff8574586af3cc4ebb992c8cbea2a 100644 (file)
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -36,6 +36,9 @@ extern int __mkdir (const char *__path, __mode_t __mode);
 libc_hidden_proto (__mkdir)
 extern int __mknod (const char *__path,
                    __mode_t __mode, __dev_t __dev);
+extern int __fxstat64_time64 (int __ver, int __fildes,
+                             struct __stat64_t64 *__stat_buf);
+
 #if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN)
 hidden_proto (__fxstat)
 hidden_proto (__fxstat64)

diff --git a/io/Versions b/io/Versions
index f7e5dbe49e00063ee35a4fe7777a33a202686d66..0d8f63c4515e1e835825ecc1d8ff7b329261e443 100644 (file)
--- a/io/Versions
+++ b/io/Versions
@@ -132,6 +132,9 @@ libc {
     fcntl64;
     statx;
   }
+  GLIBC_2.29 {
+    __fxstat64_time64;
+  }
   GLIBC_PRIVATE {
     __libc_fcntl64;
     __fcntl_nocancel;

diff --git a/io/fstat64.c b/io/fstat64.c
index 0f4de02cee621d4af52abbdedf98269cd8897847..56b1b3f5dedeb82015f69ffda26a0afcdbdd44f7 100644 (file)
--- a/io/fstat64.c
+++ b/io/fstat64.c
@@ -50,3 +50,10 @@ fstat64 (int fd, struct stat64 *buf)
 {
   return __fxstat64 (_STAT_VER, fd, buf);
 }
+
+int
+attribute_hidden
+__fstat64_time64 (int fd, struct __stat64_t64 *buf)
+{
+  return __fxstat64_time64 (_STAT_VER, fd, buf);
+}

diff --git a/sysdeps/unix/sysv/linux/fxstat64.c b/sysdeps/unix/sysv/linux/fxstat64.c
index 0d053897a088c7f625022ed70686f0f04456bce5..8c376cc64c234da8c566e5830cf3a3c8d1104606 100644 (file)
--- a/sysdeps/unix/sysv/linux/fxstat64.c
+++ b/sysdeps/unix/sysv/linux/fxstat64.c
@@ -51,3 +51,43 @@ hidden_ver (___fxstat64, __fxstat64)
 strong_alias (___fxstat64, __fxstat64)
 hidden_def (__fxstat64)
 #endif
+
+/* 64-bit time version */
+
+int
+__fxstat64_time64 (int vers, int fd, struct __stat64_t64 *buf)
+{
+  int result;
+  struct stat64 st64;
+
+  result = INLINE_SYSCALL (fstat64, 2, fd, &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;
+}