l3.libnazgul/src/spaceOpen.c

#include "libnazgul.h"
#include "ids.h"

/* prototypes des fonctions annexes <20> ne pas exporter */
int msgSpaceIdIntern(msgSpaceId dest,const msgSpaceId src );
int msgPoolDataIdIntern(msgSpaceId dest,const msgSpaceId src );


msgSpace * msgSpaceOpen(msgSpaceId externId){
  int shmFd;
  msgSpaceId nzgId;
  msgSpace * mSAddr;
  if (msgSpaceIdIntern(nzgId,externId) < 0){
	return NULL;
  }
  if ((shmFd=shm_open(nzgId,O_RDWR,MSGSPACE_DEFAULT_MODE)) < 0){
	perror("shm_open");
	return NULL;
  }
  mSAddr=mmap(NULL,sizeof(msgSpace),PROT_READ|PROT_WRITE,MAP_SHARED,shmFd,(off_t)0);
  
  printf( "OPEN: msgSpace mapped to 0x%08x in %d\n", (int)mSAddr,(int)getpid());
  return mSAddr;
}