[uml-devel] UML Build error when hostFS support is included.

[uml-devel] UML Build error when hostFS support is included.

[Yan Zheng]

Hi all.

I get fellow error message, when build UML with default config (make
defconfig) except hostFS support is included.  the kernel is 2.6.22-rc7.

-------------------------

WARNING: kernel/built-in.o(.text+0x141b0): Section mismatch:
reference to .init.text: (between 'kthreadd' and 'init_waitqueue_head')
  LINK linux
  Building modules, stage 2.
  MODPOST 16 modules
ERROR: "ftruncate64" [fs/hostfs/hostfs.ko] undefined!
ERROR: "__fxstat64" [fs/hostfs/hostfs.ko] undefined!
ERROR: "futimes" [fs/hostfs/hostfs.ko] undefined!
ERROR: "fchown" [fs/hostfs/hostfs.ko] undefined!
ERROR: "fchmod" [fs/hostfs/hostfs.ko] undefined!
ERROR: "utimes" [fs/hostfs/hostfs.ko] undefined!
make[2]: *** [__modpost] Error 1
make[1]: *** [modules] Error 2
make: *** [_all] Error 2

--------------------------
Regards
YZ

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Re: [uml-devel] UML Build error when hostFS support is included.

[Jeff Dike]

On Sat, Jul 07, 2007 at 07:01:36PM +0800, Yan Zheng wrote:
> ERROR: "ftruncate64" [fs/hostfs/hostfs.ko] undefined!
> ERROR: "__fxstat64" [fs/hostfs/hostfs.ko] undefined!
> ERROR: "futimes" [fs/hostfs/hostfs.ko] undefined!
> ERROR: "fchown" [fs/hostfs/hostfs.ko] undefined!
> ERROR: "fchmod" [fs/hostfs/hostfs.ko] undefined!
> ERROR: "utimes" [fs/hostfs/hostfs.ko] undefined!

Looks like it needs a bunch of EXPORT_SYMBOLs - easily fixed.

				Jeff

-- 
Work email - jdike at linux dot intel dot com

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Re: [uml-devel] UML Build error when hostFS support is included.

[Jeff Dike]

On Sat, Jul 07, 2007 at 07:01:36PM +0800, Yan Zheng wrote:
> Hi all.
> 
> I get fellow error message, when build UML with default config (make
> defconfig) except hostFS support is included.  the kernel is 2.6.22-rc7.

Try the patch below.

		Jeff

-- 
Work email - jdike at linux dot intel dot com

Add some exports for hostfs that are required after Alberto Bertogli's
fixes for accessing unlinked host files.

Also did some style cleanups while I was here.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
--
 arch/um/os-Linux/user_syms.c |   20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

Index: linux-2.6.17/arch/um/os-Linux/user_syms.c
===================================================================
--- linux-2.6.17.orig/arch/um/os-Linux/user_syms.c	2006-06-17 21:49:35.000000000 -0400
+++ linux-2.6.17/arch/um/os-Linux/user_syms.c	2007-07-10 11:35:22.000000000 -0400
@@ -5,7 +5,8 @@
  * so I *must* declare good prototypes for them and then EXPORT them.
  * The kernel code uses the macro defined by include/linux/string.h,
  * so I undef macros; the userspace code does not include that and I
- * add an EXPORT for the glibc one.*/
+ * add an EXPORT for the glibc one.
+ */
 
 #undef strlen
 #undef strstr
@@ -61,12 +62,18 @@ EXPORT_SYMBOL_PROTO(dup2);
 EXPORT_SYMBOL_PROTO(__xstat);
 EXPORT_SYMBOL_PROTO(__lxstat);
 EXPORT_SYMBOL_PROTO(__lxstat64);
+EXPORT_SYMBOL_PROTO(__fxstat64);
 EXPORT_SYMBOL_PROTO(lseek);
 EXPORT_SYMBOL_PROTO(lseek64);
 EXPORT_SYMBOL_PROTO(chown);
+EXPORT_SYMBOL_PROTO(fchown);
 EXPORT_SYMBOL_PROTO(truncate);
+EXPORT_SYMBOL_PROTO(ftruncate64);
 EXPORT_SYMBOL_PROTO(utime);
+EXPORT_SYMBOL_PROTO(utimes);
+EXPORT_SYMBOL_PROTO(futimes);
 EXPORT_SYMBOL_PROTO(chmod);
+EXPORT_SYMBOL_PROTO(fchmod);
 EXPORT_SYMBOL_PROTO(rename);
 EXPORT_SYMBOL_PROTO(__xmknod);
 
@@ -102,14 +109,3 @@ EXPORT_SYMBOL(__stack_smash_handler);
 
 extern long __guard __attribute__((weak));
 EXPORT_SYMBOL(__guard);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

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