1 a0d146ed 2005-07-12 devnull #include "stdinc.h"
 2 a0d146ed 2005-07-12 devnull #include "dat.h"
 3 a0d146ed 2005-07-12 devnull #include "fns.h"
 4 a0d146ed 2005-07-12 devnull 
 5 a0d146ed 2005-07-12 devnull static int	verbose;
 6 a0d146ed 2005-07-12 devnull 
 7 a0d146ed 2005-07-12 devnull void
 8 a0d146ed 2005-07-12 devnull usage(void)
 9 a0d146ed 2005-07-12 devnull {
10 a0d146ed 2005-07-12 devnull 	fprint(2, "usage: rdarena [-v] arenapart arena\n");
11 a0d146ed 2005-07-12 devnull 	threadexitsall(0);
12 a0d146ed 2005-07-12 devnull }
13 a0d146ed 2005-07-12 devnull 
14 a0d146ed 2005-07-12 devnull static void
15 a0d146ed 2005-07-12 devnull rdarena(Arena *arena)
16 a0d146ed 2005-07-12 devnull {
17 a0d146ed 2005-07-12 devnull 	ZBlock *b;
18 a0d146ed 2005-07-12 devnull 	u64int a, e;
19 a0d146ed 2005-07-12 devnull 	u32int bs;
20 a0d146ed 2005-07-12 devnull 
21 a0d146ed 2005-07-12 devnull 	fprint(2, "copying %s to standard output\n", arena->name);
22 a0d146ed 2005-07-12 devnull 	printarena(2, arena);
23 a0d146ed 2005-07-12 devnull 
24 a0d146ed 2005-07-12 devnull 	bs = MaxIoSize;
25 a0d146ed 2005-07-12 devnull 	if(bs < arena->blocksize)
26 a0d146ed 2005-07-12 devnull 		bs = arena->blocksize;
27 a0d146ed 2005-07-12 devnull 
28 a0d146ed 2005-07-12 devnull 	b = alloczblock(bs, 0, arena->blocksize);
29 a0d146ed 2005-07-12 devnull 	e = arena->base + arena->size + arena->blocksize;
30 a0d146ed 2005-07-12 devnull 	for(a = arena->base - arena->blocksize; a + arena->blocksize <= e; a += bs){
31 a0d146ed 2005-07-12 devnull 		if(a + bs > e)
32 a0d146ed 2005-07-12 devnull 			bs = arena->blocksize;
33 a0d146ed 2005-07-12 devnull 		if(readpart(arena->part, a, b->data, bs) < 0)
34 a0d146ed 2005-07-12 devnull 			fprint(2, "can't copy %s, read at %lld failed: %r\n", arena->name, a);	
35 a0d146ed 2005-07-12 devnull 		if(write(1, b->data, bs) != bs)
36 a0d146ed 2005-07-12 devnull 			sysfatal("can't copy %s, write at %lld failed: %r", arena->name, a);
37 a0d146ed 2005-07-12 devnull 	}
38 a0d146ed 2005-07-12 devnull 
39 a0d146ed 2005-07-12 devnull 	freezblock(b);
40 a0d146ed 2005-07-12 devnull }
41 a0d146ed 2005-07-12 devnull 
42 a0d146ed 2005-07-12 devnull void
43 a0d146ed 2005-07-12 devnull threadmain(int argc, char *argv[])
44 a0d146ed 2005-07-12 devnull {
45 a0d146ed 2005-07-12 devnull 	ArenaPart *ap;
46 a0d146ed 2005-07-12 devnull 	Part *part;
47 a0d146ed 2005-07-12 devnull 	char *file, *aname;
48 a0d146ed 2005-07-12 devnull 	int i;
49 a0d146ed 2005-07-12 devnull 
50 a0d146ed 2005-07-12 devnull 	ventifmtinstall();
51 a0d146ed 2005-07-12 devnull 	statsinit();
52 a0d146ed 2005-07-12 devnull 
53 a0d146ed 2005-07-12 devnull 	ARGBEGIN{
54 a0d146ed 2005-07-12 devnull 	case 'v':
55 a0d146ed 2005-07-12 devnull 		verbose++;
56 a0d146ed 2005-07-12 devnull 		break;
57 a0d146ed 2005-07-12 devnull 	default:
58 a0d146ed 2005-07-12 devnull 		usage();
59 a0d146ed 2005-07-12 devnull 		break;
60 a0d146ed 2005-07-12 devnull 	}ARGEND
61 a0d146ed 2005-07-12 devnull 
62 a0d146ed 2005-07-12 devnull 	readonly = 1;
63 a0d146ed 2005-07-12 devnull 
64 a0d146ed 2005-07-12 devnull 	if(argc != 2)
65 a0d146ed 2005-07-12 devnull 		usage();
66 a0d146ed 2005-07-12 devnull 
67 a0d146ed 2005-07-12 devnull 	file = argv[0];
68 a0d146ed 2005-07-12 devnull 	aname = argv[1];
69 a0d146ed 2005-07-12 devnull 
70 a0d146ed 2005-07-12 devnull 	part = initpart(file, OREAD|ODIRECT);
71 a0d146ed 2005-07-12 devnull 	if(part == nil)
72 a0d146ed 2005-07-12 devnull 		sysfatal("can't open partition %s: %r", file);
73 a0d146ed 2005-07-12 devnull 
74 a0d146ed 2005-07-12 devnull 	ap = initarenapart(part);
75 a0d146ed 2005-07-12 devnull 	if(ap == nil)
76 a0d146ed 2005-07-12 devnull 		sysfatal("can't initialize arena partition in %s: %r", file);
77 a0d146ed 2005-07-12 devnull 
78 a0d146ed 2005-07-12 devnull 	if(verbose)
79 a0d146ed 2005-07-12 devnull 		printarenapart(2, ap);
80 a0d146ed 2005-07-12 devnull 
81 a0d146ed 2005-07-12 devnull 	initdcache(8 * MaxDiskBlock);
82 a0d146ed 2005-07-12 devnull 
83 a0d146ed 2005-07-12 devnull 	for(i = 0; i < ap->narenas; i++){
84 a0d146ed 2005-07-12 devnull 		if(strcmp(ap->arenas[i]->name, aname) == 0){
85 a0d146ed 2005-07-12 devnull 			rdarena(ap->arenas[i]);
86 a0d146ed 2005-07-12 devnull 			threadexitsall(0);
87 a0d146ed 2005-07-12 devnull 		}
88 a0d146ed 2005-07-12 devnull 	}
89 a0d146ed 2005-07-12 devnull 
90 a0d146ed 2005-07-12 devnull 	sysfatal("couldn't find arena %s\n", aname);
91 a0d146ed 2005-07-12 devnull }