xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

devmnt: make abandoning fid on botched clunk handle flushes

Browse source 
make mntflushfree() return the original rpc and do the
botched clunk check on the original instead of the
current rpc.

so if we get a botched flush of a clunk, we abandon the
fid of the channel as well.
This commit is contained in:
cinap_lenrek 2014-04-28 06:55:06 +02:00
parent 2c2a71cd51
commit 40b6959788
1 changed files with 8 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
sys/src/9/port/devmnt.c
View file

@ -58,7 +58,7 @@ struct Mntalloc
Mnt* mntchk(Chan*);
void mntdirfix(uchar*, Chan*);
Mntrpc* mntflushalloc(Mntrpc*, ulong);
void mntflushfree(Mnt*, Mntrpc*);
Mntrpc* mntflushfree(Mnt*, Mntrpc*);
void mntfree(Mntrpc*);
void mntgate(Mnt*);
void mntqrm(Mnt*, Mntrpc*);
@ -777,6 +777,7 @@ mountio(Mnt *m, Mntrpc *r)
if(m->rip == up)
mntgate(m);
if(strcmp(up->errstr, Eintr) != 0){
r = mntflushfree(m, r);
switch(r->request.type){
case Tremove:
case Tclunk:
@ -784,7 +785,6 @@ mountio(Mnt *m, Mntrpc *r)
if(strcmp(up->errstr, Ehungup) != 0)
r->c->fid = 0;
}
mntflushfree(m, r);
nexterror();
}
r = mntflushalloc(r, m->msize);
@ -1007,9 +1007,9 @@ mntflushalloc(Mntrpc *r, ulong iounit)
* flush and the original message from the unanswered
* request queue. Mark the original message as done
* and if it hasn't been answered set the reply to to
* Rflush.
* Rflush. Return the original rpc.
*/
void
Mntrpc*
mntflushfree(Mnt *m, Mntrpc *r)
{
Mntrpc *fr;
@ -1020,10 +1020,12 @@ mntflushfree(Mnt *m, Mntrpc *r)
r->reply.type = Rflush;
mntqrm(m, r);
}
if(fr)
mntfree(r);
if(fr == nil)
break;
mntfree(r);
r = fr;
}
return r;
}
int