| Commit | Line | Data |
|---|
| 463ee0b2 |
1 | /* |
| 2 | * dba dbm analysis/recovery |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <sys/file.h> |
| 7 | #include "sdbm.h" |
| 8 | |
| 9 | char *progname; |
| 10 | extern void oops(); |
| 11 | |
| 12 | int |
| 13 | main(argc, argv) |
| 14 | char **argv; |
| 15 | { |
| 16 | int n; |
| 17 | char *p; |
| 18 | char *name; |
| 19 | int pagf; |
| 20 | |
| 21 | progname = argv[0]; |
| 22 | |
| 23 | if (p = argv[1]) { |
| 24 | name = (char *) malloc((n = strlen(p)) + 5); |
| 25 | strcpy(name, p); |
| 26 | strcpy(name + n, ".pag"); |
| 27 | |
| 28 | if ((pagf = open(name, O_RDONLY)) < 0) |
| 29 | oops("cannot open %s.", name); |
| 30 | |
| 31 | sdump(pagf); |
| 32 | } |
| 33 | else |
| 34 | oops("usage: %s dbname", progname); |
| 35 | |
| 36 | return 0; |
| 37 | } |
| 38 | |
| 39 | sdump(pagf) |
| 40 | int pagf; |
| 41 | { |
| 42 | register b; |
| 43 | register n = 0; |
| 44 | register t = 0; |
| 45 | register o = 0; |
| 46 | register e; |
| 47 | char pag[PBLKSIZ]; |
| 48 | |
| 49 | while ((b = read(pagf, pag, PBLKSIZ)) > 0) { |
| 50 | printf("#%d: ", n); |
| 51 | if (!okpage(pag)) |
| 52 | printf("bad\n"); |
| 53 | else { |
| 54 | printf("ok. "); |
| 55 | if (!(e = pagestat(pag))) |
| 56 | o++; |
| 57 | else |
| 58 | t += e; |
| 59 | } |
| 60 | n++; |
| 61 | } |
| 62 | |
| 63 | if (b == 0) |
| 64 | printf("%d pages (%d holes): %d entries\n", n, o, t); |
| 65 | else |
| 66 | oops("read failed: block %d", n); |
| 67 | } |
| 68 | |
| 69 | pagestat(pag) |
| 70 | char *pag; |
| 71 | { |
| 72 | register n; |
| 73 | register free; |
| 74 | register short *ino = (short *) pag; |
| 75 | |
| 76 | if (!(n = ino[0])) |
| 77 | printf("no entries.\n"); |
| 78 | else { |
| 79 | free = ino[n] - (n + 1) * sizeof(short); |
| 80 | printf("%3d entries %2d%% used free %d.\n", |
| 81 | n / 2, ((PBLKSIZ - free) * 100) / PBLKSIZ, free); |
| 82 | } |
| 83 | return n / 2; |
| 84 | } |
projects / p5sagit/p5-mst-13.2.git / blame