Import glibc-mainline for 2006-08-16

git-svn-id: svn://svn.eglibc.org/fsf/trunk@4 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 285 insertions, 0 deletions

diff --git a/libc/sysdeps/unix/sysv/linux/xstatconv.c b/libc/sysdeps/unix/sysv/linux/xstatconv.c
new file mode 100644
index 000000000..805e33978
--- /dev/null
+++ b/libc/sysdeps/unix/sysv/linux/xstatconv.c
@@ -0,0 +1,285 @@
+/* Convert between the kernel's `struct stat' format, and libc's.
+   Copyright (C) 1991,1995-1997,2000,2002,2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <kernel_stat.h>
+
+#ifdef STAT_IS_KERNEL_STAT
+
+/* Dummy.  */
+struct kernel_stat;
+
+#else
+
+#include <string.h>
+
+
+#if !defined __ASSUME_STAT64_SYSCALL || defined XSTAT_IS_XSTAT64
+int
+__xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
+{
+  switch (vers)
+    {
+    case _STAT_VER_KERNEL:
+      /* Nothing to do.  The struct is in the form the kernel expects.
+         We should have short-circuted before we got here, but for
+         completeness... */
+      *(struct kernel_stat *) ubuf = *kbuf;
+      break;
+
+    case _STAT_VER_LINUX:
+      {
+	struct stat *buf = ubuf;
+
+	/* Convert to current kernel version of `struct stat'.  */
+	buf->st_dev = kbuf->st_dev;
+#ifdef _HAVE_STAT___PAD1
+	buf->__pad1 = 0;
+#endif
+	buf->st_ino = kbuf->st_ino;
+	buf->st_mode = kbuf->st_mode;
+	buf->st_nlink = kbuf->st_nlink;
+	buf->st_uid = kbuf->st_uid;
+	buf->st_gid = kbuf->st_gid;
+	buf->st_rdev = kbuf->st_rdev;
+#ifdef _HAVE_STAT___PAD2
+	buf->__pad2 = 0;
+#endif
+	buf->st_size = kbuf->st_size;
+	buf->st_blksize = kbuf->st_blksize;
+	buf->st_blocks = kbuf->st_blocks;
+#ifdef _HAVE_STAT_NSEC
+	buf->st_atim.tv_sec = kbuf->st_atim.tv_sec;
+	buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec;
+	buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec;
+	buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec;
+	buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec;
+	buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec;
+#else
+	buf->st_atime = kbuf->st_atime;
+	buf->st_mtime = kbuf->st_mtime;
+	buf->st_ctime = kbuf->st_ctime;
+#endif
+#ifdef _HAVE_STAT___UNUSED1
+	buf->__unused1 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED2
+	buf->__unused2 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED3
+	buf->__unused3 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED4
+	buf->__unused4 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED5
+	buf->__unused5 = 0;
+#endif
+      }
+      break;
+
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return 0;
+}
+#endif
+
+int
+__xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
+{
+#ifdef XSTAT_IS_XSTAT64
+  return __xstat_conv (vers, kbuf, ubuf);
+#else
+  switch (vers)
+    {
+    case _STAT_VER_LINUX:
+      {
+	struct stat64 *buf = ubuf;
+
+	/* Convert to current kernel version of `struct stat64'.  */
+	buf->st_dev = kbuf->st_dev;
+#ifdef _HAVE_STAT64___PAD1
+	buf->__pad1 = 0;
+#endif
+	buf->st_ino = kbuf->st_ino;
+#ifdef _HAVE_STAT64___ST_INO
+	buf->__st_ino = kbuf->st_ino;
+#endif
+	buf->st_mode = kbuf->st_mode;
+	buf->st_nlink = kbuf->st_nlink;
+	buf->st_uid = kbuf->st_uid;
+	buf->st_gid = kbuf->st_gid;
+	buf->st_rdev = kbuf->st_rdev;
+#ifdef _HAVE_STAT64___PAD2
+	buf->__pad2 = 0;
+#endif
+	buf->st_size = kbuf->st_size;
+	buf->st_blksize = kbuf->st_blksize;
+	buf->st_blocks = kbuf->st_blocks;
+#ifdef _HAVE_STAT64_NSEC
+	buf->st_atim.tv_sec = kbuf->st_atim.tv_sec;
+	buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec;
+	buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec;
+	buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec;
+	buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec;
+	buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec;
+#else
+	buf->st_atime = kbuf->st_atime;
+	buf->st_mtime = kbuf->st_mtime;
+	buf->st_ctime = kbuf->st_ctime;
+#endif
+#ifdef _HAVE_STAT64___UNUSED1
+	buf->__unused1 = 0;
+#endif
+#ifdef _HAVE_STAT64___UNUSED2
+	buf->__unused2 = 0;
+#endif
+#ifdef _HAVE_STAT64___UNUSED3
+	buf->__unused3 = 0;
+#endif
+#ifdef _HAVE_STAT64___UNUSED4
+	buf->__unused4 = 0;
+#endif
+#ifdef _HAVE_STAT64___UNUSED5
+	buf->__unused5 = 0;
+#endif
+      }
+      break;
+
+      /* If struct stat64 is different from struct stat then
+	 _STAT_VER_KERNEL does not make sense.  */
+    case _STAT_VER_KERNEL:
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return 0;
+#endif
+}
+
+int
+__xstat32_conv (int vers, struct stat64 *kbuf, struct stat *buf)
+{
+  switch (vers)
+    {
+    case _STAT_VER_LINUX:
+      {
+	/* Convert current kernel version of `struct stat64' to
+           `struct stat'.  */
+	buf->st_dev = kbuf->st_dev;
+#ifdef _HAVE_STAT___PAD1
+	buf->__pad1 = 0;
+#endif
+#ifdef _HAVE_STAT64___ST_INO
+# if __ASSUME_ST_INO_64_BIT == 0
+	if (kbuf->st_ino == 0)
+	  buf->st_ino = kbuf->__st_ino;
+	else
+# endif
+	  {
+	    buf->st_ino = kbuf->st_ino;
+	    if (sizeof (buf->st_ino) != sizeof (kbuf->st_ino)
+		&& buf->st_ino != kbuf->st_ino)
+	      {
+		__set_errno (EOVERFLOW);
+		return -1;
+	      }
+	  }
+#else
+	buf->st_ino = kbuf->st_ino;
+	if (sizeof (buf->st_ino) != sizeof (kbuf->st_ino)
+	    && buf->st_ino != kbuf->st_ino)
+	  {
+	    __set_errno (EOVERFLOW);
+	    return -1;
+	  }
+#endif
+	buf->st_mode = kbuf->st_mode;
+	buf->st_nlink = kbuf->st_nlink;
+	buf->st_uid = kbuf->st_uid;
+	buf->st_gid = kbuf->st_gid;
+	buf->st_rdev = kbuf->st_rdev;
+#ifdef _HAVE_STAT___PAD2
+	buf->__pad2 = 0;
+#endif
+	buf->st_size = kbuf->st_size;
+	/* Check for overflow.  */
+	if (sizeof (buf->st_size) != sizeof (kbuf->st_size)
+	    && buf->st_size != kbuf->st_size)
+	  {
+	    __set_errno (EOVERFLOW);
+	    return -1;
+	  }
+	buf->st_blksize = kbuf->st_blksize;
+	buf->st_blocks = kbuf->st_blocks;
+	/* Check for overflow.  */
+	if (sizeof (buf->st_blocks) != sizeof (kbuf->st_blocks)
+	    && buf->st_blocks != kbuf->st_blocks)
+	  {
+	    __set_errno (EOVERFLOW);
+	    return -1;
+	  }
+#ifdef _HAVE_STAT_NSEC
+	buf->st_atim.tv_sec = kbuf->st_atim.tv_sec;
+	buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec;
+	buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec;
+	buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec;
+	buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec;
+	buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec;
+#else
+	buf->st_atime = kbuf->st_atime;
+	buf->st_mtime = kbuf->st_mtime;
+	buf->st_ctime = kbuf->st_ctime;
+#endif
+
+#ifdef _HAVE_STAT___UNUSED1
+	buf->__unused1 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED2
+	buf->__unused2 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED3
+	buf->__unused3 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED4
+	buf->__unused4 = 0;
+#endif
+#ifdef _HAVE_STAT___UNUSED5
+	buf->__unused5 = 0;
+#endif
+      }
+      break;
+
+      /* If struct stat64 is different from struct stat then
+	 _STAT_VER_KERNEL does not make sense.  */
+    case _STAT_VER_KERNEL:
+    default:
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return 0;
+}
+
+#endif