afsdirentry *
afsroot::firstentry (sfs_aid aid)
{
afsdir *d = userdir (aid);
afsdirentry *de = afsdir::firstentry (aid);
if (!d || !d->lookup (de->name, aid))
return de;
return nextentry (de, aid);
}
void
afsdir::ls ()
{
warnx ("files in directory %d:\n", (u_int32_t) ino);
pentry (this, ".");
pentry (parent, "..");
for (afsdirentry *e = firstentry (NULL); e; e = nextentry (e, NULL))
pentry (e->node, e->name);
}
int userdb_change(const char *filename, const struct userentry *uep, int create) {
/* possible values for `create' are:
* 0: never create a new record (return 1 if not already there).
* 1: create a new record if required.
* 2: fail (and return 1) if already exists (ie, force creation)
* -1: delete an existing record (return 1 if it doesn't exist).
* return values are:
* 0: OK
* 1: Value for `create' prevented us from going ahead
* 2: Wanted to create a new record, but there is no room.
*/
static struct userentry ue;
int n, initial, i, place;
FILE *file;
initbyuserid(filename,"r+b",F_WRLCK,uep->userid,uep->access,&file,&initial,&n);
i= initial; place= -1;
for(;;) {
getentry(file,&ue,filename);
if (!ue.userid[0]) {
if (place==-1) place= i;
} else if (!strncmp(uep->userid,ue.userid,USERID_MAXLEN)) /* &&
(uep->access < 0 || uep->access == ue.access)) */ {
if (create==2) { ufclose(file,filename); return 1; }
place=i; break;
}
i= nextentry(file,i,n,filename);
if (i == initial) {
/* OK, we didn't find it. We may have found a space, though */
if (create<=0) { ufclose(file,filename); return 1; }
if (place==-1) { ufclose(file,filename); return 2; }
break;
}
}
if (fseek(file,sizeof(struct userentry)*place,SEEK_SET))
ohshite("User database `%s' unseekable for update",filename);
if (create<0) {
ue.userid[0]= 0;
ue.secretbytes= 0;
ue.disabled= 0;
memset(ue.secret,0,SECRET_MAXBYTES);
uep= &ue;
} else {
assert(uep->access >= 0);
}
errno=0; if (fwrite(uep,sizeof(*uep),1,file)!=1)
ohshite("User database `%s' unwriteable",filename);
if (ufclose(file,filename)) ohshite("User database `%s' uncloseable",filename);
return 0;
}
const struct userentry *userdb_find(const char *filename,
const char userid[USERID_MAXLEN],
int ac) {
static struct userentry ue;
int n, initial, i;
FILE *file;
initbyuserid(filename,"rb",F_RDLCK,userid,ac,&file,&initial,&n);
i= initial;
for(;;) {
getentry(file,&ue,filename);
if (!strncmp(userid,ue.userid,USERID_MAXLEN) &&
(ac<0 || ue.access == ac)) { ufclose(file,filename); return &ue; }
i= nextentry(file,i,n,filename);
if (i == initial) { ufclose(file,filename); return 0; }
}
}
