uint8_t flock_mr_change(uint32_t inode,uint32_t sessionid,uint64_t owner,char cmd) {
inodelocks *il;
lock *l,*nl;
uint8_t ltype;
if (cmd=='U' || cmd=='u') {
il = flock_inode_find(inode);
if (il==NULL) {
return MFS_ERROR_MISMATCH;
}
l=il->active;
while (l) {
nl = l->next;
if (l->sessionid==sessionid && l->owner==owner) {
flock_do_lock_remove(l);
meta_version_inc();
}
l = nl;
}
if (il->waiting_head==NULL && il->active==NULL) {
flock_inode_remove(il->inode);
}
return MFS_STATUS_OK;
} else if (cmd=='R' || cmd=='r' || cmd=='S' || cmd=='s') {
ltype = LTYPE_READER;
} else if (cmd=='W' || cmd=='w' || cmd=='E' || cmd=='e') {
ltype = LTYPE_WRITER;
} else {
return MFS_ERROR_EINVAL;
}
il = flock_inode_find(inode);
if (il==NULL) {
il = flock_inode_new(inode);
}
if (il->active!=NULL && (il->active->ltype==LTYPE_WRITER || ltype==LTYPE_WRITER)) {
return MFS_ERROR_MISMATCH;
}
l = malloc(sizeof(lock));
l->owner = owner;
l->sessionid = sessionid;
l->state = STATE_ACTIVE;
l->ltype = ltype;
l->lock_instances = NULL;
l->parent = il;
l->next = NULL;
l->prev = NULL;
flock_do_lock_inode_attach(l);
meta_version_inc();
return MFS_STATUS_OK;
}
void changelog(const char *format,...) {
static char printbuff[MAXLOGLINESIZE];
va_list ap;
uint32_t leng;
uint64_t version = meta_version_inc();
va_start(ap,format);
leng = vsnprintf(printbuff,MAXLOGLINESIZE,format,ap);
va_end(ap);
if (leng>=MAXLOGLINESIZE) {
printbuff[MAXLOGLINESIZE-1]='\0';
leng=MAXLOGLINESIZE;
} else {
leng++;
}
changelog_mr(version,printbuff);
// if (currentfd==NULL) {
// currentfd = fopen("changelog.0.mfs","a");
// if (!currentfd) {
// syslog(LOG_NOTICE,"lost MFS change %"PRIu64": %s",version,printbuff);
// }
// }
//
// if (currentfd) {
// fprintf(currentfd,"%"PRIu64": %s\n",version,printbuff);
// fflush(currentfd);
// }
changelog_store_logstring(version,(uint8_t*)printbuff,leng);
}
static inline uint8_t sclass_univ_delete_entry(uint8_t nleng,const uint8_t *name,uint16_t esclassid) {
uint32_t sclassid,fsclassid;
if (sclass_name_check(nleng,name)==0) {
return MFS_ERROR_EINVAL;
}
fsclassid = 0;
for (sclassid=1 ; fsclassid==0 && sclassid<firstneverused ; sclassid++) {
if (sclasstab[sclassid].nleng==nleng && memcmp(sclasstab[sclassid].name,name,nleng)==0) {
fsclassid = sclassid;
}
}
if (fsclassid==0) {
return MFS_ERROR_NOSUCHCLASS;
}
if (fsclassid<FIRSTSCLASSID) {
return MFS_ERROR_EPERM;
}
if (sclasstab[fsclassid].files>0 || sclasstab[fsclassid].directories>0) {
return MFS_ERROR_CLASSINUSE;
}
if (esclassid!=0 && fsclassid!=esclassid) {
return MFS_ERROR_MISMATCH;
}
sclasstab[fsclassid].nleng = 0;
if (esclassid==0) {
changelog("%"PRIu32"|SCDEL(%s):%"PRIu32,main_time(),changelog_escape_name(nleng,name),fsclassid);
} else {
meta_version_inc();
}
return MFS_STATUS_OK;
}
static inline uint8_t sclass_univ_rename_entry(uint8_t oldnleng,const uint8_t *oldname,uint8_t newnleng,const uint8_t *newname,uint16_t esclassid) {
uint32_t sclassid,fsclassid;
if (sclass_name_check(oldnleng,oldname)==0 || sclass_name_check(newnleng,newname)==0) {
return MFS_ERROR_EINVAL;
}
fsclassid = 0;
for (sclassid=1 ; fsclassid==0 && sclassid<firstneverused ; sclassid++) {
if (sclasstab[sclassid].nleng==oldnleng && memcmp(sclasstab[sclassid].name,oldname,oldnleng)==0) {
fsclassid = sclassid;
}
}
if (fsclassid==0) {
return MFS_ERROR_NOSUCHCLASS;
}
if (fsclassid<FIRSTSCLASSID) {
return MFS_ERROR_EPERM;
}
if (esclassid!=0 && fsclassid!=esclassid) {
return MFS_ERROR_MISMATCH;
}
for (sclassid=1 ; sclassid<firstneverused ; sclassid++) {
if (sclasstab[sclassid].nleng==newnleng && memcmp(sclasstab[sclassid].name,newname,newnleng)==0) {
return MFS_ERROR_CLASSEXISTS;
}
}
sclasstab[fsclassid].nleng = newnleng;
memcpy(sclasstab[fsclassid].name,newname,newnleng);
if (esclassid==0) {
changelog("%"PRIu32"|SCREN(%s,%s):%"PRIu32,main_time(),changelog_escape_name(oldnleng,oldname),changelog_escape_name(newnleng,newname),fsclassid);
} else {
meta_version_inc();
}
return MFS_STATUS_OK;
}
uint8_t sclass_mr_set_entry(uint8_t nleng,const uint8_t *name,uint16_t esclassid,uint8_t new_flag,uint8_t admin_only,uint8_t create_mode,uint8_t create_labelscnt,uint32_t *create_labelmasks,uint8_t keep_labelscnt,uint32_t *keep_labelmasks,uint8_t arch_labelscnt,uint32_t *arch_labelmasks,uint16_t arch_delay) {
uint32_t sclassid,fsclassid;
uint32_t i;
if (sclass_name_check(nleng,name)==0) {
return MFS_ERROR_EINVAL;
}
fsclassid = 0;
for (sclassid=1 ; sclassid<firstneverused ; sclassid++) {
if (sclasstab[sclassid].nleng==nleng && memcmp(sclasstab[sclassid].name,name,nleng)==0) {
if (new_flag) {
return MFS_ERROR_CLASSEXISTS;
} else {
fsclassid = sclassid;
break;
}
}
if (sclasstab[sclassid].nleng==0 && fsclassid==0 && new_flag) {
fsclassid = sclassid;
}
}
if (fsclassid==0) {
if (new_flag) {
if (firstneverused==MAXSCLASS) {
return MFS_ERROR_CLASSLIMITREACH;
}
fsclassid = firstneverused;
firstneverused++;
} else {
return MFS_ERROR_NOSUCHCLASS;
}
}
if (fsclassid!=esclassid) {
return MFS_ERROR_MISMATCH;
}
if (create_labelscnt==0 || create_labelscnt>MAXLABELSCNT || keep_labelscnt==0 || keep_labelscnt>MAXLABELSCNT || arch_labelscnt==0 || arch_labelscnt>MAXLABELSCNT) {
return MFS_ERROR_EINVAL;
}
if (new_flag) {
sclasstab[fsclassid].nleng = nleng;
memcpy(sclasstab[fsclassid].name,name,nleng);
}
sclasstab[fsclassid].admin_only = admin_only;
sclasstab[fsclassid].create_mode = create_mode;
sclasstab[fsclassid].create_labelscnt = create_labelscnt;
for (i=0 ; i<create_labelscnt ; i++) {
memcpy(sclasstab[fsclassid].create_labelmasks[i],create_labelmasks+(i*MASKORGROUP),MASKORGROUP*sizeof(uint32_t));
}
sclasstab[fsclassid].keep_labelscnt = keep_labelscnt;
for (i=0 ; i<keep_labelscnt ; i++) {
memcpy(sclasstab[fsclassid].keep_labelmasks[i],keep_labelmasks+(i*MASKORGROUP),MASKORGROUP*sizeof(uint32_t));
}
sclasstab[fsclassid].arch_labelscnt = arch_labelscnt;
for (i=0 ; i<arch_labelscnt ; i++) {
memcpy(sclasstab[fsclassid].arch_labelmasks[i],arch_labelmasks+(i*MASKORGROUP),MASKORGROUP*sizeof(uint32_t));
}
sclasstab[fsclassid].arch_delay = arch_delay;
sclass_fix_has_labels_fields(fsclassid);
meta_version_inc();
return MFS_STATUS_OK;
}
static inline uint8_t sclass_univ_duplicate_entry(uint8_t oldnleng,const uint8_t *oldname,uint8_t newnleng,const uint8_t *newname,uint16_t essclassid,uint16_t edsclassid) {
uint32_t sclassid,fssclassid,fdsclassid;
uint32_t i;
if (sclass_name_check(oldnleng,oldname)==0 || sclass_name_check(newnleng,newname)==0 || (essclassid==0 && edsclassid>0) || (edsclassid==0 && essclassid>0)) {
return MFS_ERROR_EINVAL;
}
fssclassid = 0;
for (sclassid=1 ; fssclassid==0 && sclassid<firstneverused ; sclassid++) {
if (sclasstab[sclassid].nleng==oldnleng && memcmp(sclasstab[sclassid].name,oldname,oldnleng)==0) {
fssclassid = sclassid;
}
}
if (fssclassid==0) {
return MFS_ERROR_NOSUCHCLASS;
}
if (essclassid!=0 && fssclassid!=essclassid) {
return MFS_ERROR_MISMATCH;
}
fdsclassid = 0;
for (sclassid=1 ; sclassid<firstneverused ; sclassid++) {
if (sclasstab[sclassid].nleng==newnleng && memcmp(sclasstab[sclassid].name,newname,newnleng)==0) {
return MFS_ERROR_CLASSEXISTS;
}
if (sclasstab[sclassid].nleng==0 && fdsclassid==0) {
fdsclassid = sclassid;
}
}
if (fdsclassid==0) {
if (firstneverused==MAXSCLASS) {
return MFS_ERROR_CLASSLIMITREACH;
}
fdsclassid = firstneverused;
firstneverused++;
}
if (edsclassid!=0 && fdsclassid!=edsclassid) {
return MFS_ERROR_MISMATCH;
}
sclasstab[fdsclassid].nleng = newnleng;
memcpy(sclasstab[fdsclassid].name,newname,newnleng);
sclasstab[fdsclassid].admin_only = sclasstab[fssclassid].admin_only;
sclasstab[fdsclassid].create_mode = sclasstab[fssclassid].create_mode;
sclasstab[fdsclassid].create_labelscnt = sclasstab[fssclassid].create_labelscnt;
for (i=0 ; i<sclasstab[fssclassid].create_labelscnt ; i++) {
memcpy(sclasstab[fdsclassid].create_labelmasks[i],sclasstab[fssclassid].create_labelmasks[i],MASKORGROUP*sizeof(uint32_t));
}
sclasstab[fdsclassid].has_create_labels = sclasstab[fssclassid].has_create_labels;
sclasstab[fdsclassid].keep_labelscnt = sclasstab[fssclassid].keep_labelscnt;
for (i=0 ; i<sclasstab[fssclassid].keep_labelscnt ; i++) {
memcpy(sclasstab[fdsclassid].keep_labelmasks[i],sclasstab[fssclassid].keep_labelmasks[i],MASKORGROUP*sizeof(uint32_t));
}
sclasstab[fdsclassid].has_keep_labels = sclasstab[fssclassid].has_keep_labels;
sclasstab[fdsclassid].arch_labelscnt = sclasstab[fssclassid].arch_labelscnt;
for (i=0 ; i<sclasstab[fssclassid].arch_labelscnt ; i++) {
memcpy(sclasstab[fdsclassid].arch_labelmasks[i],sclasstab[fssclassid].arch_labelmasks[i],MASKORGROUP*sizeof(uint32_t));
}
sclasstab[fdsclassid].has_arch_labels = sclasstab[fssclassid].has_arch_labels;
sclasstab[fdsclassid].arch_delay = sclasstab[fssclassid].arch_delay;
if (essclassid==0 && edsclassid==0) {
changelog("%"PRIu32"|SCDUP(%s,%s):%"PRIu32",%"PRIu32,main_time(),changelog_escape_name(oldnleng,oldname),changelog_escape_name(newnleng,newname),fssclassid,fdsclassid);
} else {
meta_version_inc();
}
return MFS_STATUS_OK;
}
