how to use "msgget" in nios2 uclinx?

Today I write a test.c for test ipc/msg. frist I make it use GCC, it work fine in FC4.

Then I make it use nios2-linux-uclibc-gcc, and exec it. But msgQ not inplemented

following is the return information in shell.

# msgsend

msgget: Calling msgget(0x4d2,01666)

msgget: Function not implemented#

So I check the nios2 kernel configure, I slect "general-->POSIX Message Queues" setting and rebuild the kernel.

follow is rebuilding kernel information:

[Alex@localhost linux-2.6.x]$ make ARCH=nios2nommu CROSS_COMPILE=nios2-linux-uclibc- zImage

no emulation specific options.

CHK include/linux/version.h

SPLIT include/linux/autoconf.h -> include/config/*

CHK include/nios2_system.h

perl -I/home/Alex/linux-2.6.x/arch/nios2nommu/scripts /home/Alex/linux-2.6.x/arch/nios2nommu/scripts/gen_nios2_system.h.pl cpu sdram ext_flash < ../nios2_ptf/CRM3500N_cpu_v2.ptf > include/nios2_system.h.tmp; if [ -r include/nios2_system.h ] && cmp -s include/nios2_system.h include/nios2_system.h.tmp; then rm -f include/nios2_system.h.tmp; else echo &#39; UPD include/nios2_system.h&#39;; mv -f include/nios2_system.h.tmp include/nios2_system.h; fi

make[1]: “arch/nios2nommu/kernel/asm-offsets.s”&#26159;&#26368;&#26032;&#30340;&#12290;

CHK include/asm-nios2nommu/asm-offsets.h

CHK include/linux/compile.h

CHK usr/initramfs_list

CC ipc/mqueue.o

CC ipc/msgutil.o

LD ipc/built-in.o

GEN .version

CHK include/linux/compile.h

UPD include/linux/compile.h

CC init/version.o

LD init/built-in.o

LD vmlinux

SYSMAP System.map

OBJCOPY arch/nios2nommu/boot/compressed/vmlinux.bin

GZIP arch/nios2nommu/boot/compressed/vmlinux.bin.gz

LD arch/nios2nommu/boot/compressed/piggy.o

LD arch/nios2nommu/boot/compressed/vmlinux

OBJCOPY arch/nios2nommu/boot/zImage

Kernel: arch/nios2nommu/boot/zImage is ready

[Alex@localhost linux-2.6.x]$

I find CC ipc/mqueue.o , so I think maybe ipcs will suppourt.

CC ipc/msgutil.o

LD ipc/built-in.o

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif I exec the zImage, but ipcs cmd still lost.

And exec the test bin still failed.

The following is the test.c for test ipc/mqueue

# include <sys/types.h># include <sys/ipc.h># include <sys/msg.h># include <stdio.h># include <string.h># define MSGSZ 128

/*

* Declare the message structure.

*/

typedef struct {

long mtype;

char mtext[MSGSZ];

} message_buf;

main(){

int msqid;

int msgflg = IPC_CREAT | 0666;

key_t key;

message_buf sbuf;

size_t buf_length;

/*

* Get the message queue id for the

* "name" 1234, which was created by

* the server.

*/

key = 1234;

(void) fprintf(stderr,

"\nmsgget: Calling msgget(%#lx,\%#o)\n",

key, msgflg);

if ((msqid = msgget(key, msgflg )) < 0) {

perror("msgget");

exit(1);

}

else

(void) fprintf(stderr,

"msgget: msgget succeeded: msqid = %d\n",

msqid);

/*

* We&#39;ll send message type 1

*/

sbuf.mtype = 1;

(void) fprintf(stderr,

"msgget: msgget succeeded: msqid = %d\n",

msqid);

(void) strcpy(sbuf.mtext, "Did you get this?");

(void) fprintf(stderr,

"msgget: msgget succeeded: msqid = %d\n",

msqid);

buf_length = strlen(sbuf.mtext) ;

/*

* Send a message.

*/

if (msgsnd(msqid, &sbuf, buf_length, IPC_NOWAIT) < 0) {

printf ("%d, %d, %s, %d\n", msqid, sbuf.mtype, sbuf.mtext, buf_length);

perror("msgsnd");

exit(1);

}

else

printf("Message: \"%s\" Sent\n", sbuf.mtext);

exit(0);

}

Pleaes let us solver the question togeter. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif