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

ndb/dns: initialize unknown fids to point to the root qid

Browse source 
the dns file service can be restarted, which causes it to forget
all fid state. given the simple file system structure of the dns
service (just a single dns file), we can assume that rpcs
on a unknown fid refers to the root, so the mountpoint will stay
valid and /net/dns can be reopend avoiding the need for a remount
of the dns service after restart.
This commit is contained in:
cinap_lenrek 2016-02-22 22:44:01 +01:00
parent 258fe87faf
commit b31cc134e7
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
sys/src/cmd/ndb/dns.c
View file

@ -320,7 +320,10 @@ newfid(int fid, int needunused)
}
mf = emalloc(sizeof(*mf));
mf->fid = fid;
mf->user = estrdup("dummy");
mf->qid.vers = vers;
mf->qid.type = QTDIR;
mf->qid.path = 0LL;
mf->user = estrdup("none");
mf->next = mfalloc.inuse;
mfalloc.inuse = mf;
unlock(&mfalloc);
@ -355,7 +358,7 @@ copyfid(Mfile *mf, int fid)
if(nmf == nil)
return nil;
nmf->fid = fid;
free(nmf->user); /* estrdup("dummy") */
free(nmf->user); /* estrdup("none") */
nmf->user = estrdup(mf->user);
nmf->qid.type = mf->qid.type;
nmf->qid.path = mf->qid.path;