1368c31abSDavid du Colombier #include "stdinc.h"
2368c31abSDavid du Colombier #include "dat.h"
3368c31abSDavid du Colombier #include "fns.h"
4368c31abSDavid du Colombier
59c1d3970SDavid du Colombier static int verbose, quiet;
6368c31abSDavid du Colombier
7368c31abSDavid du Colombier void
usage(void)8368c31abSDavid du Colombier usage(void)
9368c31abSDavid du Colombier {
10368c31abSDavid du Colombier fprint(2, "usage: rdarena [-v] arenapart arena\n");
11368c31abSDavid du Colombier threadexitsall(0);
12368c31abSDavid du Colombier }
13368c31abSDavid du Colombier
14368c31abSDavid du Colombier static void
rdarena(Arena * arena)15368c31abSDavid du Colombier rdarena(Arena *arena)
16368c31abSDavid du Colombier {
17368c31abSDavid du Colombier ZBlock *b;
18368c31abSDavid du Colombier u64int a, e;
19368c31abSDavid du Colombier u32int bs;
20368c31abSDavid du Colombier
219c1d3970SDavid du Colombier if (!quiet) {
22368c31abSDavid du Colombier fprint(2, "copying %s to standard output\n", arena->name);
23368c31abSDavid du Colombier printarena(2, arena);
249c1d3970SDavid du Colombier }
25368c31abSDavid du Colombier
26368c31abSDavid du Colombier bs = MaxIoSize;
27368c31abSDavid du Colombier if(bs < arena->blocksize)
28368c31abSDavid du Colombier bs = arena->blocksize;
29368c31abSDavid du Colombier
30368c31abSDavid du Colombier b = alloczblock(bs, 0, arena->blocksize);
31368c31abSDavid du Colombier e = arena->base + arena->size + arena->blocksize;
32368c31abSDavid du Colombier for(a = arena->base - arena->blocksize; a + arena->blocksize <= e; a += bs){
33368c31abSDavid du Colombier if(a + bs > e)
34368c31abSDavid du Colombier bs = arena->blocksize;
35368c31abSDavid du Colombier if(readpart(arena->part, a, b->data, bs) < 0)
36368c31abSDavid du Colombier fprint(2, "can't copy %s, read at %lld failed: %r\n", arena->name, a);
37368c31abSDavid du Colombier if(write(1, b->data, bs) != bs)
38368c31abSDavid du Colombier sysfatal("can't copy %s, write at %lld failed: %r", arena->name, a);
39368c31abSDavid du Colombier }
40368c31abSDavid du Colombier
41368c31abSDavid du Colombier freezblock(b);
42368c31abSDavid du Colombier }
43368c31abSDavid du Colombier
44368c31abSDavid du Colombier void
threadmain(int argc,char * argv[])45368c31abSDavid du Colombier threadmain(int argc, char *argv[])
46368c31abSDavid du Colombier {
47368c31abSDavid du Colombier ArenaPart *ap;
48368c31abSDavid du Colombier Part *part;
49368c31abSDavid du Colombier char *file, *aname;
50368c31abSDavid du Colombier int i;
51368c31abSDavid du Colombier
52368c31abSDavid du Colombier ventifmtinstall();
53368c31abSDavid du Colombier statsinit();
54368c31abSDavid du Colombier
55368c31abSDavid du Colombier ARGBEGIN{
569c1d3970SDavid du Colombier case 'q':
579c1d3970SDavid du Colombier quiet++;
589c1d3970SDavid du Colombier break;
59368c31abSDavid du Colombier case 'v':
60368c31abSDavid du Colombier verbose++;
61368c31abSDavid du Colombier break;
62368c31abSDavid du Colombier default:
63368c31abSDavid du Colombier usage();
64368c31abSDavid du Colombier break;
65368c31abSDavid du Colombier }ARGEND
66368c31abSDavid du Colombier
67368c31abSDavid du Colombier readonly = 1;
68368c31abSDavid du Colombier
69368c31abSDavid du Colombier if(argc != 2)
70368c31abSDavid du Colombier usage();
71368c31abSDavid du Colombier
72368c31abSDavid du Colombier file = argv[0];
73368c31abSDavid du Colombier aname = argv[1];
74368c31abSDavid du Colombier
75368c31abSDavid du Colombier part = initpart(file, OREAD|ODIRECT);
76368c31abSDavid du Colombier if(part == nil)
77368c31abSDavid du Colombier sysfatal("can't open partition %s: %r", file);
78368c31abSDavid du Colombier
79368c31abSDavid du Colombier ap = initarenapart(part);
80368c31abSDavid du Colombier if(ap == nil)
81368c31abSDavid du Colombier sysfatal("can't initialize arena partition in %s: %r", file);
82368c31abSDavid du Colombier
83368c31abSDavid du Colombier if(verbose)
84368c31abSDavid du Colombier printarenapart(2, ap);
85368c31abSDavid du Colombier
86368c31abSDavid du Colombier initdcache(8 * MaxDiskBlock);
87368c31abSDavid du Colombier
88368c31abSDavid du Colombier for(i = 0; i < ap->narenas; i++){
89368c31abSDavid du Colombier if(strcmp(ap->arenas[i]->name, aname) == 0){
90368c31abSDavid du Colombier rdarena(ap->arenas[i]);
91368c31abSDavid du Colombier threadexitsall(0);
92368c31abSDavid du Colombier }
93368c31abSDavid du Colombier }
94368c31abSDavid du Colombier
95*14cc0f53SDavid du Colombier sysfatal("couldn't find arena %s", aname);
96368c31abSDavid du Colombier }
97