static int lsmPosixOsClose(lsm_file *pFile){
PosixFile *p = (PosixFile *)pFile;
lsmPosixOsShmUnmap(pFile, 0);
if( p->pMap ) munmap(p->pMap, p->nMap);
close(p->fd);
lsm_free(p->pEnv, p->apShm);
lsm_free(p->pEnv, p);
return LSM_OK;
}
static int lsmPosixOsOpen(
lsm_env *pEnv,
const char *zFile,
int flags,
lsm_file **ppFile
){
int rc = LSM_OK;
PosixFile *p;
p = lsm_malloc(pEnv, sizeof(PosixFile));
if( p==0 ){
rc = LSM_NOMEM;
}else{
int bReadonly = (flags & LSM_OPEN_READONLY);
int oflags = (bReadonly ? O_RDONLY : (O_RDWR|O_CREAT));
memset(p, 0, sizeof(PosixFile));
p->zName = zFile;
p->pEnv = pEnv;
p->fd = open(zFile, oflags, 0644);
if( p->fd<0 ){
lsm_free(pEnv, p);
p = 0;
if( errno==ENOENT ){
rc = lsmErrorBkpt(LSM_IOERR_NOENT);
}else{
rc = LSM_IOERR_BKPT;
}
}
}
*ppFile = (lsm_file *)p;
return rc;
}
int lov_free_memmd(struct lov_stripe_md **lsmp)
{
struct lov_stripe_md *lsm = *lsmp;
int refc;
*lsmp = NULL;
refc = atomic_dec_return(&lsm->lsm_refc);
LASSERT(refc >= 0);
if (refc == 0)
lsm_free(lsm);
return refc;
}
