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tdlist.c - dedup - data deduplication program |
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git clone git://bitreich.org/dedup/ git://hg6vgqziawt5s4dj.onion/dedup/ (git://bitreich.org) |
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README |
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LICENSE |
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--- |
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tdlist.c (1736B) |
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--- |
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1 #include <sys/types.h> |
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2 #include <sys/stat.h> |
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3 #include <sys/file.h> |
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4 |
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5 #include <err.h> |
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6 #include <fcntl.h> |
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7 #include <stdio.h> |
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8 #include <stdint.h> |
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9 #include <stdlib.h> |
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10 #include <string.h> |
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11 #include <unistd.h> |
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12 |
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13 #include "arg.h" |
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14 #include "blake2.h" |
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15 #include "dedup.h" |
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16 |
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17 static struct snap_hdr snap_hdr; |
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18 static struct blk_hdr blk_hdr; |
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19 static int ifd; |
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20 static int sfd; |
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21 static int hash_algo = HASH_BLAKE2B; |
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22 static int compr_algo = COMPR_LZ4; |
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23 |
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24 int verbose; |
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25 char *argv0; |
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26 |
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27 static void |
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28 print_md(FILE *fp, uint8_t *md, size_t size) |
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29 { |
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30 size_t i; |
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31 |
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32 for (i = 0; i < size; i++) |
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33 fprintf(fp, "%02x", md[i]); |
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34 } |
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35 |
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36 static int |
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37 list(struct snap *snap, void *arg) |
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38 { |
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39 print_md(stdout, snap->md, sizeof(snap->md)); |
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40 if (snap->msg[0] != '\0') |
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41 printf("\t%s\n", snap->msg); |
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42 else |
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43 putchar('\n'); |
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44 return WALK_CONTINUE; |
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45 } |
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46 |
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47 static void |
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48 init(void) |
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49 { |
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50 ifd = open(SNAPSF, O_RDONLY, 0600); |
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51 if (ifd < 0) |
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52 err(1, "open %s", SNAPSF); |
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53 |
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54 sfd = open(STOREF, O_RDONLY, 0600); |
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55 if (sfd < 0) |
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56 err(1, "open %s", STOREF); |
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57 |
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58 if (flock(ifd, LOCK_NB | LOCK_EX) < 0 || |
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59 flock(sfd, LOCK_NB | LOCK_EX) < 0) |
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60 err(1, "flock"); |
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61 |
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62 xlseek(ifd, 0, SEEK_SET); |
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63 load_snap_hdr(ifd, &snap_hdr); |
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64 xlseek(sfd, 0, SEEK_SET); |
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65 load_blk_hdr(sfd, &blk_hdr, &compr_algo, &hash_algo); |
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66 } |
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67 |
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68 static void |
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69 term(void) |
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70 { |
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71 close(ifd); |
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72 close(sfd); |
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73 } |
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74 |
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75 static void |
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76 usage(void) |
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77 { |
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78 fprintf(stderr, "usage: %s [-v] [repo]\n", argv0); |
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79 exit(1); |
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80 } |
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81 |
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82 int |
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83 main(int argc, char *argv[]) |
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84 { |
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85 char *repo = NULL; |
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86 |
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87 ARGBEGIN { |
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88 case 'v': |
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89 verbose++; |
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90 break; |
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91 default: |
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92 usage(); |
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93 } ARGEND |
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94 |
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95 switch (argc) { |
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96 case 0: |
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97 repo = "."; |
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98 break; |
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99 case 1: |
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100 repo = argv[0]; |
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101 break; |
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102 default: |
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103 usage(); |
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104 }; |
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105 |
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106 if (chdir(repo) < 0) |
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107 err(1, "chdir: %s", repo); |
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108 |
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109 init(); |
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110 walk_snap(ifd, &snap_hdr, list, NULL); |
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111 term(); |
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112 return 0; |
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113 } |
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