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uClibc: backport sync_file_range fixes (closes: #19350) 

Signed-off-by: Nicolas Thill <nico@openwrt.org>

SVN-Revision: 45249
This commit is contained in:
Nicolas Thill 2015-04-02 23:21:30 +00:00
parent 7d091dca2e
commit 6a5a7db085
1 changed files with 57 additions and 0 deletions
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57
toolchain/uClibc/patches-0.9.33.2/025-libc-sync_file_range.patch Normal file
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@ -0,0 +1,57 @@
Index: uClibc-0.9.33.2/libc/sysdeps/linux/common/sync_file_range.c
===================================================================
--- uClibc-0.9.33.2.orig/libc/sysdeps/linux/common/sync_file_range.c 2012-05-15 09:20:09.000000000 +0200
+++ uClibc-0.9.33.2/libc/sysdeps/linux/common/sync_file_range.c 2015-04-03 00:27:47.701221722 +0200
@@ -4,24 +4,39 @@
*
* Copyright (C) 2008 Bernhard Reutner-Fischer <uclibc@uclibc.org>
*
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
*/
#include <sys/syscall.h>
-#if defined __USE_GNU
-#include <fcntl.h>
+#if defined __UCLIBC_HAS_LFS__ && defined __USE_GNU
+# include <bits/wordsize.h>
+# include <endian.h>
+# include <fcntl.h>
-#if defined __NR_sync_file_range && defined __UCLIBC_HAS_LFS__
-#define __NR___syscall_sync_file_range __NR_sync_file_range
-static __inline__ _syscall6(int, __syscall_sync_file_range, int, fd,
- off_t, offset_hi, off_t, offset_lo,
- off_t, nbytes_hi, off_t, nbytes_lo, unsigned int, flags)
+# ifdef __NR_sync_file_range2
+# undef __NR_sync_file_range
+# define __NR_sync_file_range __NR_sync_file_range2
+# endif
+
+# ifdef __NR_sync_file_range
int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)
{
- return __syscall_sync_file_range(fd,
- __LONG_LONG_PAIR((long)(offset >> 32), (long)(offset & 0xffffffff)),
- __LONG_LONG_PAIR((long)(nbytes >> 32), (long)(nbytes & 0xffffffff)),
- flags);
+# if defined __powerpc__ && __WORDSIZE == 64
+ return INLINE_SYSCALL(sync_file_range, 4, fd, flags, offset, nbytes);
+# elif (defined __mips__ && _MIPS_SIM == _ABIO32) || \
+ (defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) && !(defined(__powerpc__) || defined(__xtensa__)))
+ /* arch with 64-bit data in even reg alignment #2: [arcv2/others-in-future]
+ * stock syscall handler in kernel (reg hole punched)
+ * see libc/sysdeps/linux/common/posix_fadvise.c for more details */
+ return INLINE_SYSCALL(sync_file_range, 7, fd, 0,
+ OFF64_HI_LO(offset), OFF64_HI_LO(nbytes), flags);
+# elif defined __NR_sync_file_range2
+ return INLINE_SYSCALL(sync_file_range, 6, fd, flags,
+ OFF64_HI_LO(offset), OFF64_HI_LO(nbytes));
+# else
+ return INLINE_SYSCALL(sync_file_range, 6, fd,
+ OFF64_HI_LO(offset), OFF64_HI_LO(nbytes), flags);
+# endif
}
-#endif
+# endif
#endif