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#include "dat.h"
Logbuf confbuf;
Req *cusewait; /* requests waiting for confirmation */
Req **cuselast = &cusewait;
void
confirmread(Req *r)
{
logbufread(&confbuf, r);
}
void
confirmflush(Req *r)
{
Req **l;
for(l=&cusewait; *l; l=&(*l)->aux){
if(*l == r){
*l = r->aux;
if(r->aux == nil)
cuselast = l;
closereq(r);
break;
}
}
logbufflush(&confbuf, r);
}
static int
hastag(Fsstate *fss, int tag, int *tagoff)
{
int i;
for(i=0; i<fss->nconf; i++)
if(fss->conf[i].tag == tag){
*tagoff = i;
return 1;
}
return 0;
}
int
confirmwrite(char *s)
{
char *t, *ans;
int allow, tagoff;
ulong tag;
Attr *a;
Fsstate *fss;
Req *r, **l;
a = _parseattr(s);
if(a == nil){
werrstr("empty write");
return -1;
}
if((t = _strfindattr(a, "tag")) == nil){
werrstr("no tag");
return -1;
}
tag = strtoul(t, 0, 0);
if((ans = _strfindattr(a, "answer")) == nil){
werrstr("no answer");
return -1;
}
if(strcmp(ans, "yes") == 0)
allow = 1;
else if(strcmp(ans, "no") == 0)
allow = 0;
else{
werrstr("bad answer");
return -1;
}
r = nil;
tagoff = -1;
for(l=&cusewait; *l; l=&(*l)->aux){
r = *l;
if(hastag(r->fid->aux, tag, &tagoff)){
*l = r->aux;
if(r->aux == nil)
cuselast = l;
break;
}
}
if(r == nil || tagoff == -1){
werrstr("tag not found");
return -1;
}
fss = r->fid->aux;
fss->conf[tagoff].canuse = allow;
rpcread(r);
return 0;
}
void
confirmqueue(Req *r, Fsstate *fss)
{
int i, n;
char msg[1024];
if(*confirminuse == 0){
respond(r, "confirm is closed");
return;
}
n = 0;
for(i=0; i<fss->nconf; i++)
if(fss->conf[i].canuse == -1){
n++;
snprint(msg, sizeof msg, "confirm tag=%lud %A", fss->conf[i].tag, fss->conf[i].key->attr);
logbufappend(&confbuf, msg);
}
if(n == 0){
respond(r, "no confirmations to wait for (bug)");
return;
}
*cuselast = r;
r->aux = nil;
cuselast = &r->aux;
}
/* Yes, I am unhappy that the code below is a copy of the code above. */
Logbuf needkeybuf;
Req *needwait; /* requests that need keys */
Req **needlast = &needwait;
void
needkeyread(Req *r)
{
logbufread(&needkeybuf, r);
}
void
needkeyflush(Req *r)
{
Req **l;
for(l=&needwait; *l; l=&(*l)->aux){
if(*l == r){
*l = r->aux;
if(r->aux == nil)
needlast = l;
closereq(r);
break;
}
}
logbufflush(&needkeybuf, r);
}
int
needkeywrite(char *s)
{
char *t;
ulong tag;
Attr *a;
Req *r, **l;
a = _parseattr(s);
if(a == nil){
werrstr("empty write");
return -1;
}
if((t = _strfindattr(a, "tag")) == nil){
werrstr("no tag");
return -1;
}
tag = strtoul(t, 0, 0);
r = nil;
for(l=&needwait; *l; l=&(*l)->aux){
r = *l;
if(r->tag == tag){
*l = r->aux;
if(r->aux == nil)
needlast = l;
break;
}
}
if(r == nil){
werrstr("tag not found");
return -1;
}
rpcread(r);
return 0;
}
int
needkeyqueue(Req *r, Fsstate *fss)
{
char msg[1024];
if(*needkeyinuse == 0)
return -1;
snprint(msg, sizeof msg, "needkey tag=%lud %s", r->tag, fss->keyinfo);
logbufappend(&needkeybuf, msg);
*needlast = r;
r->aux = nil;
needlast = &r->aux;
return 0;
}
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