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 f5a8ea6f 2011-06-02 rsc static int verbose, quiet;
 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 8aeb3ea1 2011-06-07 rsc 	fprint(2, "usage: rdarena [-qv] 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 f5a8ea6f 2011-06-02 rsc 	if (!quiet) {
22 f5a8ea6f 2011-06-02 rsc 		fprint(2, "copying %s to standard output\n", arena->name);
23 f5a8ea6f 2011-06-02 rsc 		printarena(2, arena);
24 f5a8ea6f 2011-06-02 rsc 	}
25 a0d146ed 2005-07-12 devnull 
26 a0d146ed 2005-07-12 devnull 	bs = MaxIoSize;
27 a0d146ed 2005-07-12 devnull 	if(bs < arena->blocksize)
28 a0d146ed 2005-07-12 devnull 		bs = arena->blocksize;
29 a0d146ed 2005-07-12 devnull 
30 a0d146ed 2005-07-12 devnull 	b = alloczblock(bs, 0, arena->blocksize);
31 a0d146ed 2005-07-12 devnull 	e = arena->base + arena->size + arena->blocksize;
32 a0d146ed 2005-07-12 devnull 	for(a = arena->base - arena->blocksize; a + arena->blocksize <= e; a += bs){
33 a0d146ed 2005-07-12 devnull 		if(a + bs > e)
34 a0d146ed 2005-07-12 devnull 			bs = arena->blocksize;
35 a0d146ed 2005-07-12 devnull 		if(readpart(arena->part, a, b->data, bs) < 0)
36 fa325e9b 2020-01-10 cross 			fprint(2, "can't copy %s, read at %lld failed: %r\n", arena->name, a);
37 a0d146ed 2005-07-12 devnull 		if(write(1, b->data, bs) != bs)
38 a0d146ed 2005-07-12 devnull 			sysfatal("can't copy %s, write at %lld failed: %r", arena->name, a);
39 a0d146ed 2005-07-12 devnull 	}
40 a0d146ed 2005-07-12 devnull 
41 a0d146ed 2005-07-12 devnull 	freezblock(b);
42 a0d146ed 2005-07-12 devnull }
43 a0d146ed 2005-07-12 devnull 
44 a0d146ed 2005-07-12 devnull void
45 a0d146ed 2005-07-12 devnull threadmain(int argc, char *argv[])
46 a0d146ed 2005-07-12 devnull {
47 a0d146ed 2005-07-12 devnull 	ArenaPart *ap;
48 a0d146ed 2005-07-12 devnull 	Part *part;
49 a0d146ed 2005-07-12 devnull 	char *file, *aname;
50 a0d146ed 2005-07-12 devnull 	int i;
51 a0d146ed 2005-07-12 devnull 
52 a0d146ed 2005-07-12 devnull 	ventifmtinstall();
53 a0d146ed 2005-07-12 devnull 	statsinit();
54 a0d146ed 2005-07-12 devnull 
55 a0d146ed 2005-07-12 devnull 	ARGBEGIN{
56 f5a8ea6f 2011-06-02 rsc 	case 'q':
57 f5a8ea6f 2011-06-02 rsc 		quiet++;
58 f5a8ea6f 2011-06-02 rsc 		break;
59 a0d146ed 2005-07-12 devnull 	case 'v':
60 a0d146ed 2005-07-12 devnull 		verbose++;
61 a0d146ed 2005-07-12 devnull 		break;
62 a0d146ed 2005-07-12 devnull 	default:
63 a0d146ed 2005-07-12 devnull 		usage();
64 a0d146ed 2005-07-12 devnull 		break;
65 a0d146ed 2005-07-12 devnull 	}ARGEND
66 a0d146ed 2005-07-12 devnull 
67 a0d146ed 2005-07-12 devnull 	readonly = 1;
68 a0d146ed 2005-07-12 devnull 
69 a0d146ed 2005-07-12 devnull 	if(argc != 2)
70 a0d146ed 2005-07-12 devnull 		usage();
71 a0d146ed 2005-07-12 devnull 
72 a0d146ed 2005-07-12 devnull 	file = argv[0];
73 a0d146ed 2005-07-12 devnull 	aname = argv[1];
74 a0d146ed 2005-07-12 devnull 
75 a0d146ed 2005-07-12 devnull 	part = initpart(file, OREAD|ODIRECT);
76 a0d146ed 2005-07-12 devnull 	if(part == nil)
77 a0d146ed 2005-07-12 devnull 		sysfatal("can't open partition %s: %r", file);
78 a0d146ed 2005-07-12 devnull 
79 a0d146ed 2005-07-12 devnull 	ap = initarenapart(part);
80 a0d146ed 2005-07-12 devnull 	if(ap == nil)
81 a0d146ed 2005-07-12 devnull 		sysfatal("can't initialize arena partition in %s: %r", file);
82 a0d146ed 2005-07-12 devnull 
83 a0d146ed 2005-07-12 devnull 	if(verbose)
84 a0d146ed 2005-07-12 devnull 		printarenapart(2, ap);
85 a0d146ed 2005-07-12 devnull 
86 a0d146ed 2005-07-12 devnull 	initdcache(8 * MaxDiskBlock);
87 a0d146ed 2005-07-12 devnull 
88 a0d146ed 2005-07-12 devnull 	for(i = 0; i < ap->narenas; i++){
89 a0d146ed 2005-07-12 devnull 		if(strcmp(ap->arenas[i]->name, aname) == 0){
90 a0d146ed 2005-07-12 devnull 			rdarena(ap->arenas[i]);
91 a0d146ed 2005-07-12 devnull 			threadexitsall(0);
92 a0d146ed 2005-07-12 devnull 		}
93 a0d146ed 2005-07-12 devnull 	}
94 a0d146ed 2005-07-12 devnull 
95 f5a8ea6f 2011-06-02 rsc 	sysfatal("couldn't find arena %s", aname);
96 a0d146ed 2005-07-12 devnull }