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uclibc: fix ARC compile

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Add patch [1,2] to fix ARC uclibc snapshot compile (as suggested by
Baruch Siach [3]).

Fixes ARC uclibc compile failure ([4]) posix_fadvise/off64_t related.

[1] http://thread.gmane.org/gmane.comp.lib.uclibc.general/23714
[2] http://patchwork.ozlabs.org/patch/308533/mbox/
[3] http://lists.busybox.net/pipermail/buildroot/2014-March/092512.html
[4] http://lists.busybox.net/pipermail/buildroot/2014-March/092506.html

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Peter Seiderer 2014-03-21 20:45:22 +01:00 committed by Thomas Petazzoni
parent 5e829e5f9a
commit 57682973d4
1 changed files with 95 additions and 0 deletions
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95
package/uclibc/f37101d94284c692ee9b23bc72ef38b9473cd316/uclibc-0001-libc-posix_fadvise-Fix-build-breakage-for-LFS.patch Normal file
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@ -0,0 +1,95 @@
From patchwork Thu Jan 9 09:35:45 2014
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: libc: posix_fadvise: Fix build breakage for !LFS
From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
X-Patchwork-Id: 308533
Message-Id: <1389260145-8810-1-git-send-email-vgupta@synopsys.com>
To: <uclibc@uclibc.org>
Cc: Francois.Bedard@synopsys.com, Vineet Gupta <Vineet.Gupta1@synopsys.com>,
markos Chandras <markos.chandras@gmail.com>
Date: Thu, 9 Jan 2014 15:05:45 +0530
commit 00571b43df2e "libc: posix_fadvise: restore implementation for xtensa"
enabled posix_fadvise() for all arches (it was just not generated
before).
However this also unearthed an issue introduced by ee84b8b400
"linux: posix_fadvise: use new SYSCALL_ALIGN_64BIT" which is to
referencing LFS'ish code (off64_t) w/o proper checks which causes build
to break for !LFS.
Fix this by calling posix_fadvise64() only for LFS case and open-code
it's equivalent for !LFS.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Khem Raj <raj.khem@gmail.com>
Cc: markos Chandras <markos.chandras@gmail.com>
Cc: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
---
libc/sysdeps/linux/common/posix_fadvise.c | 30 ++++++++++++++++++++++++------
1 file changed, 24 insertions(+), 6 deletions(-)
diff --git a/libc/sysdeps/linux/common/posix_fadvise.c b/libc/sysdeps/linux/common/posix_fadvise.c
index 25c294178e5e..14bbeeea13bc 100644
--- a/libc/sysdeps/linux/common/posix_fadvise.c
+++ b/libc/sysdeps/linux/common/posix_fadvise.c
@@ -22,17 +22,34 @@
# include <endian.h>
# include <bits/wordsize.h>
-# ifdef __NR_fadvise64_64
-int posix_fadvise64(int fd, off64_t offset, off64_t len, int advice);
-# endif
+# if defined(__NR_fadvise64_64) && defined(__UCLIBC_HAS_LFS__)
+#include <_lfs_64.h>
+int posix_fadvise64(int fd, off64_t offset, off64_t len, int advice);
int posix_fadvise(int fd, off_t offset, off_t len, int advice)
{
-# ifdef __NR_fadvise64_64
return posix_fadvise64(fd, offset, len, advice);
-# else
+}
+#else
+
+int posix_fadvise(int fd, off_t offset, off_t len, int advice)
+{
int ret;
INTERNAL_SYSCALL_DECL(err);
+
+# ifdef __NR_fadvise64_64
+# if __WORDSIZE == 64
+ ret = INTERNAL_SYSCALL(fadvise64_64, err, 4, fd, offset, len, advice);
+# else
+# if defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) || defined(__arm__)
+ ret = INTERNAL_SYSCALL(fadvise64_64, err, 6, fd, advice,
+ OFF_HI_LO (offset), OFF_HI_LO (len));
+# else
+ ret = INTERNAL_SYSCALL(fadvise64_64, err, 6, fd,
+ OFF_HI_LO (offset), OFF_HI_LO (len), advice);
+# endif
+# endif
+# else /* __NR_fadvise64 */
# if __WORDSIZE == 64
ret = INTERNAL_SYSCALL(fadvise64, err, 4, fd, offset, len, advice);
# else
@@ -43,12 +60,13 @@ int posix_fadvise(int fd, off_t offset, off_t len, int advice)
# endif
OFF_HI_LO (offset), len, advice);
# endif
+# endif
if (INTERNAL_SYSCALL_ERROR_P (ret, err))
return INTERNAL_SYSCALL_ERRNO (ret, err);
return 0;
-# endif
}
# if defined __UCLIBC_HAS_LFS__ && (!defined __NR_fadvise64_64 || __WORDSIZE == 64)
strong_alias(posix_fadvise,posix_fadvise64)
# endif
#endif
+#endif