2006-10-12 12:27:30

by Dongsheng Song

Subject: maybe headers(linux/aio.h) bug ?

Whenever I include linux aio header, the compile errors occured:

$ cat test.c
#include <linux/types.h>
#include <linux/unistd.h>
#include <linux/aio.h>

$ gcc-4.1 test.c
In file included from /usr/include/linux/workqueue.h:8,
from /usr/include/linux/aio.h:5,
from test.c:3:
/usr/include/linux/timer.h:12: error: field 'entry' has incomplete type
/usr/include/linux/timer.h:34: error: expected '=', ',', ';', 'asm' or
'__attribute__' before 'init_timer'
In file included from /usr/include/linux/aio.h:5,
from test.c:3:
/usr/include/linux/workqueue.h:16: error: field 'entry' has incomplete type
In file included from /usr/include/linux/cpumask.h:86,
from /usr/include/asm-i486/processor.h:23,
from /usr/include/asm/processor.h:8,
from /usr/include/asm-i486/atomic.h:6,
from /usr/include/asm/atomic.h:8,
from /usr/include/linux/aio.h:8,
from test.c:3:
/usr/include/linux/bitmap.h: In function 'bitmap_zero':
/usr/include/linux/bitmap.h:128: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h:128: error: (Each undeclared identifier is
reported only once
/usr/include/linux/bitmap.h:128: error: for each function it appears in.)
/usr/include/linux/bitmap.h: In function 'bitmap_fill':
/usr/include/linux/bitmap.h:143: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_copy':
/usr/include/linux/bitmap.h:149: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_and':
/usr/include/linux/bitmap.h:160: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_or':
/usr/include/linux/bitmap.h:169: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_xor':
/usr/include/linux/bitmap.h:178: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_andnot':
/usr/include/linux/bitmap.h:187: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_complement':
/usr/include/linux/bitmap.h:196: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_equal':
/usr/include/linux/bitmap.h:205: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_intersects':
/usr/include/linux/bitmap.h:214: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_subset':
/usr/include/linux/bitmap.h:223: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_empty':
/usr/include/linux/bitmap.h:231: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_full':
/usr/include/linux/bitmap.h:239: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_shift_right':
/usr/include/linux/bitmap.h:253: error: 'BITS_PER_LONG' undeclared
(first use in this function)
/usr/include/linux/bitmap.h: In function 'bitmap_shift_left':
/usr/include/linux/bitmap.h:262: error: 'BITS_PER_LONG' undeclared
(first use in this function)
In file included from /usr/include/asm-i486/processor.h:23,
from /usr/include/asm/processor.h:8,
from /usr/include/asm-i486/atomic.h:6,
from /usr/include/asm/atomic.h:8,
from /usr/include/linux/aio.h:8,
from test.c:3:
/usr/include/linux/cpumask.h: At top level:
/usr/include/linux/cpumask.h:88: error: expected
specifier-qualifier-list before 'DECLARE_BITMAP'
/usr/include/linux/cpumask.h: In function '__cpu_set':
/usr/include/linux/cpumask.h:94: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpu_clear':
/usr/include/linux/cpumask.h:100: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_setall':
/usr/include/linux/cpumask.h:106: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_clear':
/usr/include/linux/cpumask.h:112: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpu_test_and_set':
/usr/include/linux/cpumask.h:121: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_and':
/usr/include/linux/cpumask.h:128: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:128: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:128: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_or':
/usr/include/linux/cpumask.h:135: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:135: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:135: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_xor':
/usr/include/linux/cpumask.h:142: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:142: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:142: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_andnot':
/usr/include/linux/cpumask.h:150: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:150: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:150: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_complement':
/usr/include/linux/cpumask.h:157: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:157: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_equal':
/usr/include/linux/cpumask.h:164: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:164: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_intersects':
/usr/include/linux/cpumask.h:171: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:171: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_subset':
/usr/include/linux/cpumask.h:178: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:178: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_empty':
/usr/include/linux/cpumask.h:184: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_full':
/usr/include/linux/cpumask.h:190: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_weight':
/usr/include/linux/cpumask.h:196: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_shift_right':
/usr/include/linux/cpumask.h:204: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:204: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_shift_left':
/usr/include/linux/cpumask.h:212: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:212: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpumask_scnprintf':
/usr/include/linux/cpumask.h:273: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpumask_parse':
/usr/include/linux/cpumask.h:281: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpulist_scnprintf':
/usr/include/linux/cpumask.h:289: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpulist_parse':
/usr/include/linux/cpumask.h:295: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpu_remap':
/usr/include/linux/cpumask.h:303: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:303: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h: In function '__cpus_remap':
/usr/include/linux/cpumask.h:311: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:311: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:311: error: 'cpumask_t' has no member named 'bits'
/usr/include/linux/cpumask.h:311: error: 'cpumask_t' has no member named 'bits'
In file included from test.c:3:
/usr/include/linux/aio.h: At top level:
/usr/include/linux/aio.h:86: error: field 'ki_run_list' has incomplete type
/usr/include/linux/aio.h:103: error: expected specifier-qualifier-list
before 'wait_queue_t'
/usr/include/linux/aio.h:180: error: expected specifier-qualifier-list
before 'wait_queue_head_t'
/usr/include/linux/aio.h: In function 'list_kiocb':
/usr/include/linux/aio.h:243: error: expected expression before 'struct'

When I using gcc-3.4, same errors occured.

Here is those related packages version:
ii linux-headers-2.6.17-2 2.6.17-9
Commonheader files for Linux 2.6.17
ii linux-headers-2.6.17-2-686 2.6.17-9 Headerfiles
for Linux 2.6.17 on PPro/Celero
ii linux-kernel-headers 2.6.17.10-3 LinuxKernel
Headers for development
ii libc6 2.3.6.ds1-4 GNU C
Library: Shared libraries
ii libc6-dev 2.3.6.ds1-4 GNU C
Library: Development Libraries and Hea
ii libc6-i686 2.3.6.ds1-4 GNU C
Library: Shared libraries [i686 optimi
ii gcc-3.4 3.4.6-4 The GNU C compiler
ii gcc-4.1 4.1.1-13 The GNU C compiler

Thanks for some help

2006-10-12 12:32:09

by Michael Poole

Subject: Re: maybe headers(linux/aio.h) bug ?

Dongsheng Song writes:

> Whenever I include linux aio header, the compile errors occured:
>
> $ cat test.c
> #include <linux/types.h>
> #include <linux/unistd.h>
> #include <linux/aio.h>

Including kernel header files directly from userspace is not supported
and is almost always (some just say "always") a very bad idea. If you
want to use the C library's AIO support, use its <aio.h> header.

Michael Poole

2006-10-12 12:56:20

by David Woodhouse

Subject: Re: maybe headers(linux/aio.h) bug ?

On Thu, 2006-10-12 at 20:27 +0800, Dongsheng Song wrote:
> Whenever I include linux aio header, the compile errors occured:
>
> $ cat test.c
> #include <linux/types.h>
> #include <linux/unistd.h>
> #include <linux/aio.h>

That's just broken. There should be no file /usr/include/linux/aio.h
because it isn't listed as one of the files to be exported from the
kernel when you run 'make headers_install'.

--
dwmw2

2006-10-13 01:30:11

by Dongsheng Song

Subject: Re: maybe headers(linux/aio.h) bug ?

But the current C library's AIO support does not use Linux's AIO, if I
use Linux AIO, the only way is define my io_event, iocb, aio_context_t
types, isn't it ?


2006/10/12, Michael Poole <[email protected]>:
> Dongsheng Song writes:
>
> > Whenever I include linux aio header, the compile errors occured:
> >
> > $ cat test.c
> > #include <linux/types.h>
> > #include <linux/unistd.h>
> > #include <linux/aio.h>
>
> Including kernel header files directly from userspace is not supported
> and is almost always (some just say "always") a very bad idea. If you
> want to use the C library's AIO support, use its <aio.h> header.
>
> Michael Poole
>