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/*
* generate a list of files and their metadata
* using a given proto file.
*/
#include "all.h"
int changesonly;
char *uid;
Db *db;
Biobuf blog;
ulong now;
int n;
char **x;
int nx;
int justlog;
char *root=".";
char **match;
int nmatch;
int
ismatch(char *s)
{
int i, len;
if(nmatch == 0)
return 1;
for(i=0; i<nmatch; i++){
if(strcmp(s, match[i]) == 0)
return 1;
len = strlen(match[i]);
if(strncmp(s, match[i], len) == 0 && s[len]=='/')
return 1;
}
return 0;
}
void
xlog(int c, char *name, Dir *d)
{
char *dname;
dname = d->name;
if(strcmp(dname, name) == 0)
dname = "-";
if(!justlog)
Bprint(&blog, "%lud %d ", now, n++);
Bprint(&blog, "%c %q %q %luo %q %q %lud %lld\n",
c, name, dname, d->mode, uid ? uid : d->uid, d->gid, d->mtime, d->length);
}
void
walk(char *new, char *old, Dir *xd, void*)
{
int i, change, len;
Dir od, d;
new = unroot(new, "/");
old = unroot(old, root);
if(!ismatch(new))
return;
for(i=0; i<nx; i++){
if(strcmp(new, x[i]) == 0)
return;
len = strlen(x[i]);
if(strncmp(new, x[i], len)==0 && new[len]=='/')
return;
}
d = *xd;
d.name = old;
memset(&od, 0, sizeof od);
change = 0;
if(markdb(db, new, &od) < 0){
if(!changesonly){
xlog('a', new, &d);
change = 1;
}
}else{
if((d.mode&DMDIR)==0 && (od.mtime!=d.mtime || od.length!=d.length)){
xlog('c', new, &d);
change = 1;
}
if((!uid&&strcmp(od.uid,d.uid)!=0)
|| strcmp(od.gid,d.gid)!=0
|| od.mode!=d.mode){
xlog('m', new, &d);
change = 1;
}
}
if(!justlog && change){
if(uid)
d.uid = uid;
d.muid = "mark"; /* mark bit */
insertdb(db, new, &d);
}
}
void
warn(char *msg, void*)
{
char *p;
fprint(2, "warning: %s\n", msg);
/* find the %r in "can't open foo: %r" */
p = strstr(msg, ": ");
if(p)
p += 2;
/*
* if the error is about a remote server failing,
* then there's no point in continuing to look
* for changes -- we'll think everything got deleted!
*
* actual errors i see are:
* "i/o on hungup channel" for a local hangup
* "i/o on hungup channel" for a timeout (yank the network wire)
* "'/n/sources/plan9' Hangup" for a remote hangup
* the rest is paranoia.
*/
if(p){
if(cistrstr(p, "hungup") || cistrstr(p, "Hangup")
|| cistrstr(p, "rpc error")
|| cistrstr(p, "shut down")
|| cistrstr(p, "i/o")
|| cistrstr(p, "connection"))
sysfatal("suspected network or i/o error - bailing out");
}
}
void
usage(void)
{
fprint(2, "usage: replica/updatedb [-c] [-p proto] [-r root] [-t now n] [-u uid] [-x path]... db [paths]\n");
exits("usage");
}
void
main(int argc, char **argv)
{
char *proto;
Avlwalk *w;
Dir d;
Entry *e;
quotefmtinstall();
proto = "/sys/lib/sysconfig/proto/allproto";
now = time(0);
Binit(&blog, 1, OWRITE);
ARGBEGIN{
case 'c':
changesonly = 1;
break;
case 'l':
justlog = 1;
break;
case 'p':
proto = EARGF(usage());
break;
case 'r':
root = EARGF(usage());
break;
case 't':
now = strtoul(EARGF(usage()), 0, 0);
n = atoi(EARGF(usage()));
break;
case 'u':
uid = EARGF(usage());
break;
case 'x':
if(nx%16 == 0)
x = erealloc(x, (nx+16)*sizeof(x[0]));
x[nx++] = EARGF(usage());
break;
default:
usage();
}ARGEND
if(argc <1)
usage();
match = argv+1;
nmatch = argc-1;
db = opendb(argv[0]);
if(rdproto(proto, root, walk, warn, nil) < 0)
sysfatal("rdproto: %r");
if(!changesonly){
w = avlwalk(db->avl);
while(e = (Entry*)avlprev(w)){
if(!ismatch(e->name))
continue;
if(!e->d.mark){ /* not visited during walk */
memset(&d, 0, sizeof d);
d.name = e->d.name;
d.uid = e->d.uid;
d.gid = e->d.gid;
d.mtime = e->d.mtime;
d.mode = e->d.mode;
xlog('d', e->name, &d);
if(!justlog)
removedb(db, e->name);
}
}
}
if(Bterm(&blog) < 0)
sysfatal("writing output: %r");
exits(nil);
}
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