alpha: fix *xstat.c build failure for Linux headers < 2.6.4

Fixes glibc bug 1026.
http://sourceware.org/ml/libc-alpha/2005-02/msg00122.html

Signed-off-by: Matt Turner <mattst88@gmail.com>

ChangeLog.alpha

@@ -1,3 +1,16 @@
+2010-05-03  GOTO Masanori  <gotom@debian.or.jp>
+
+	* sysdeps/unix/sysv/linux/alpha/kernel-features.h: Define
+	__ASSUME_STAT64_SYSCALL.
+	* sysdeps/unix/sysv/linux/alpha/fxstat.c: Check
+	__ASSUME_STAT64_SYSCALL.
+	* sysdeps/unix/sysv/linux/alpha/fxstatat.c: Likewise.
+	* sysdeps/unix/sysv/linux/alpha/lxstat.c: Likewise.
+	* sysdeps/unix/sysv/linux/alpha/xstat.c: Likewise.
+	* sysdeps/unix/sysv/linux/alpha/xstatconv.c: Don't define
+	__libc_missing_axp_stat64 when it's not	needed.
+	* sysdeps/unix/sysv/linux/alpha/xstatconv.h: Likewise.
+
 2010-03-30  Richard Henderson  <rth@redhat.com>
 
 	* sysdeps/unix/sysv/linux/alpha/bits/socket.h (MSG_WAITFORONE): New.

sysdeps/unix/sysv/linux/alpha/fxstat.c

@@ -35,27 +35,39 @@ int
 __fxstat (int vers, int fd, struct stat *buf)
 {
   INTERNAL_SYSCALL_DECL (err);
-  int result, errno_out;
+  int result;
   struct kernel_stat kbuf;
 
+#if __ASSUME_STAT64_SYSCALL > 0
+  if (vers == _STAT_VER_KERNEL64)
+    {
+      result = INTERNAL_SYSCALL (fstat64, err, 2, fd, buf);
+      if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+	return result;
+      __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
+      return -1;
+    }
+#elif defined __NR_fstat64
   if (vers == _STAT_VER_KERNEL64 && !__libc_missing_axp_stat64)
     {
+      int errno_out;
       result = INTERNAL_SYSCALL (fstat64, err, 2, fd, buf);
       if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
 	return result;
       errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
       if (errno_out != ENOSYS)
-	goto fail;
+	{
+	  __set_errno (errno_out);
+	  return -1;
+	}
       __libc_missing_axp_stat64 = 1;
     }
+#endif
 
   result = INTERNAL_SYSCALL (fstat, err, 2, fd, &kbuf);
   if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
     return __xstat_conv (vers, &kbuf, buf);
-  errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
+  __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
-  
- fail:
-  __set_errno (errno_out);
   return -1;
 }
 hidden_def (__fxstat)

sysdeps/unix/sysv/linux/alpha/fxstatat.c

@@ -71,6 +71,20 @@ __fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
   int result, errno_out;
   struct kernel_stat kst;
 
+#if __ASSUME_STAT64_SYSCALL > 0
+  if (vers == _STAT_VER_KERNEL64)
+    {
+      if (flag & AT_SYMLINK_NOFOLLOW)
+	result = INTERNAL_SYSCALL (lstat64, err, 2, file, st);
+      else
+	result = INTERNAL_SYSCALL (stat64, err, 2, file, st);
+
+      if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+	return result;
+      errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
+      goto fail;
+    }
+#elif defined __NR_stat64
   if (vers == _STAT_VER_KERNEL64 && !__libc_missing_axp_stat64)
     {
       if (flag & AT_SYMLINK_NOFOLLOW)
@@ -85,6 +99,7 @@ __fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
 	goto fail;
       __libc_missing_axp_stat64 = 1;
     }
+#endif
 
   if (flag & AT_SYMLINK_NOFOLLOW)
     result = INTERNAL_SYSCALL (lstat, err, 2, file, &kst);

sysdeps/unix/sysv/linux/alpha/kernel-features.h

@@ -29,6 +29,11 @@
 # define __ASSUME_TGKILL	1
 #endif
 
+/* Starting with version 2.6.4, the stat64 syscalls are available.  */
+#if __LINUX_KERNEL_VERSION >= 0x020604 && defined __alpha__
+# define __ASSUME_STAT64_SYSCALL   1
+#endif
+
 #define __ASSUME_UTIMES	1
 
 /* Starting with version 2.6.9, SSI_IEEE_RAISE_EXCEPTION exists.  */

sysdeps/unix/sysv/linux/alpha/lxstat.c

@@ -35,27 +35,39 @@ int
 __lxstat (int vers, const char *name, struct stat *buf)
 {
   INTERNAL_SYSCALL_DECL (err);
-  int result, errno_out;
+  int result;
   struct kernel_stat kbuf;
 
+#if __ASSUME_STAT64_SYSCALL > 0
+  if (vers == _STAT_VER_KERNEL64)
+    {
+      result = INTERNAL_SYSCALL (lstat64, err, 2, name, buf);
+      if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+	return result;
+      __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
+      return -1;
+    }
+#elif defined __NR_lstat64
   if (vers == _STAT_VER_KERNEL64 && !__libc_missing_axp_stat64)
     {
+      int errno_out;
       result = INTERNAL_SYSCALL (lstat64, err, 2, name, buf);
       if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
 	return result;
       errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
       if (errno_out != ENOSYS)
-	goto fail;
+	{
+	  __set_errno (errno_out);
+	  return -1;
+	}
       __libc_missing_axp_stat64 = 1;
     }
+#endif
 
   result = INTERNAL_SYSCALL (lstat, err, 2, name, &kbuf);
   if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
     return __xstat_conv (vers, &kbuf, buf);
-  errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
+  __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
-  
- fail:
-  __set_errno (errno_out);
   return -1;
 }
 hidden_def (__lxstat)

sysdeps/unix/sysv/linux/alpha/xstat.c

@@ -35,27 +35,39 @@ int
 __xstat (int vers, const char *name, struct stat *buf)
 {
   INTERNAL_SYSCALL_DECL (err);
-  int result, errno_out;
+  int result;
   struct kernel_stat kbuf;
 
+#if __ASSUME_STAT64_SYSCALL > 0
+  if (vers == _STAT_VER_KERNEL64)
+    {
+      result = INTERNAL_SYSCALL (stat64, err, 2, name, buf);
+      if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
+	return result;
+      __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
+      return -1;
+    }
+#elif defined __NR_stat64
   if (vers == _STAT_VER_KERNEL64 && !__libc_missing_axp_stat64)
     {
+      int errno_out;
       result = INTERNAL_SYSCALL (stat64, err, 2, name, buf);
       if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
 	return result;
       errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
       if (errno_out != ENOSYS)
-	goto fail;
+	{
+	  __set_errno (errno_out);
+	  return -1;
+	}
       __libc_missing_axp_stat64 = 1;
     }
+#endif
 
   result = INTERNAL_SYSCALL (stat, err, 2, name, &kbuf);
   if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
     return __xstat_conv (vers, &kbuf, buf);
-  errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
+  __set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
-  
- fail:
-  __set_errno (errno_out);
   return -1;
 }
 hidden_def (__xstat)

sysdeps/unix/sysv/linux/alpha/xstatconv.c

@@ -22,9 +22,14 @@
 #include <sys/stat.h>
 #include <kernel_stat.h>
 #include <xstatconv.h>
+#include <sys/syscall.h>
 
 
+#ifdef __NR_stat64
+# if __ASSUME_STAT64_SYSCALL == 0
 int __libc_missing_axp_stat64;
+# endif
+#endif
 
 int
 __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)

sysdeps/unix/sysv/linux/alpha/xstatconv.h

@@ -18,7 +18,12 @@
    02111-1307 USA.  */
 
 #include <kernel-features.h>
+#include <sys/syscall.h>
 
+#ifdef __NR_stat64
+# if __ASSUME_STAT64_SYSCALL == 0
 extern int __libc_missing_axp_stat64 attribute_hidden;
+# endif
+#endif
 extern int __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
   attribute_hidden;