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sshfs: check correctly for directory bits; calculate parent directory correctly

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This commit is contained in:
aiju 2017-04-28 20:42:38 +00:00
parent 7cc9d944df
commit f00488ec70
1 changed files with 29 additions and 26 deletions
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55
sys/src/cmd/sshfs.c
View file

@ -450,6 +450,7 @@ parentdir(char *p)
q = strdup(p);
r = strrchr(q, '/');
if(r != nil) *r = 0;
else strcpy(q, ".");
return q;
}
@ -529,7 +530,7 @@ attrib2dir(uchar *p0, uchar *ep, Dir *d)
if((flags & SSH_FILEXFER_ATTR_PERMISSIONS) != 0){
rc = unpack(p, ep - p, "u", &perm); if(rc < 0) return -1; p += rc;
d->mode = perm & 0777;
if((perm & 0040000) != 0) d->mode |= DMDIR;
if((perm & 0170000) == 0040000) d->mode |= DMDIR;
}
d->qid.type = d->mode >> 24;
if((flags & SSH_FILEXFER_ATTR_ACMODTIME) != 0){
@ -593,6 +594,24 @@ dir2attrib(Dir *d, uchar **rp)
return p - r;
}
int
attribisdir(char *fn)
{
u32int code;
uchar *p;
if(unpack(rxpkt, rxlen, "_____u", &code) < 0) return -1;
if((code & 4) == 0){
fprint(2, "sshfs: can't determine if %s is a directory\n", fn);
return 1;
}
p = rxpkt + 9;
if(code & 1) p += 8;
if(code & 2) p += 8;
if(p + 4 > rxpkt + rxlen) return -1;
return (GET4(p) & 0170000) == 0040000;
}
int
parsedir(SFid *sf)
{
@ -860,7 +879,7 @@ sendproc(void *)
rlock(sf);
r->req->d.name = finalelem(sf->fn);
r->req->d.qid = sf->qid;
if(sf->handn > 0)
if(sf->handn > 0 && (sf->qid.type & QTDIR) == 0)
sendpkt("bus", SSH_FXP_FSTAT, r->reqid, sf->hand, sf->handn);
else
sendpkt("bus", SSH_FXP_STAT, r->reqid, sf->fn, strlen(sf->fn));
@ -913,12 +932,11 @@ recvproc(void *)
SReq *r;
SFid *sf;
int t, id;
int t, id, rc;
u32int code;
char *msg, *lang, *hand;
int msgn, langn, handn;
int okresp;
uchar *p;
char *e;
threadsetname("recv");
@ -965,35 +983,20 @@ recvproc(void *)
switch(r->req->ifcall.type){
case Tattach:
if(t != SSH_FXP_ATTRS) goto common;
if(unpack(rxpkt, rxlen, "_____u", &code) < 0) goto garbage;
rc = attribisdir(r->req->ifcall.aname);
r->req->aux = (void*)-1;
if((code & 4) == 0){
fprint(2, "sshfs: can't determine if %s is a directory\n", r->req->ifcall.aname);
sshfsattach(r->req);
break;
}
p = rxpkt + 9;
if(code & 1) p += 8;
if(code & 2) p += 8;
if(p + 4 > rxpkt + rxlen) goto garbage;
if((GET4(p) & 0040000) == 0)
if(rc < 0)
goto garbage;
if(rc == 0)
respond(r->req, "not a directory");
else
sshfsattach(r->req);
break;
case Twalk:
if(t != SSH_FXP_ATTRS) goto common;
if(unpack(rxpkt, rxlen, "_____u", &code) < 0) goto garbage;
if((code & 4) == 0){
fprint(2, "sshfs: can't determine if %s is a directory\n", ((SFid*)r->req->fid)->fn);
walkprocess(r->req, 0, nil);
break;
}
p = rxpkt + 9;
if(code & 1) p += 8;
if(code & 2) p += 8;
if(p + 4 > rxpkt + rxlen) goto garbage;
walkprocess(r->req, GET4(p) & 0040000, nil);
rc = attribisdir(((SFid*)r->req->fid)->fn);
if(rc < 0) goto garbage;
walkprocess(r->req, rc, nil);
break;
case Tcreate:
if(okresp && r->req->aux == (void*)-1){