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dup-rm.c - dedup - deduplicating backup program |
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git clone git://bitreich.org/dedup/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/dedup/ (git://bitreich.org) |
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README |
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LICENSE |
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--- |
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dup-rm.c (2590B) |
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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 |
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4 #include <err.h> |
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5 #include <fcntl.h> |
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6 #include <limits.h> |
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7 #include <stdint.h> |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include <unistd.h> |
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11 |
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12 #include "arg.h" |
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13 #include "block.h" |
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14 #include "config.h" |
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15 #include "key.h" |
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16 #include "lock.h" |
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17 #include "misc.h" |
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18 #include "snap.h" |
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19 #include "state.h" |
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20 |
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21 struct param param; |
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22 int verbose; |
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23 char *argv0; |
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24 |
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25 static void |
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26 loadstate(char *repo) |
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27 { |
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28 char path[PATH_MAX]; |
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29 int fd; |
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30 |
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31 if (snprintf(path, sizeof(path), "%s/state", repo) >= sizeof(path)) |
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32 errx(1, "snprintf: %s: path too long", path); |
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33 fd = open(path, O_RDONLY); |
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34 if (fd < 0) |
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35 err(1, "open: %s", path); |
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36 if (readstate(fd, ¶m) < 0) |
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37 printerr("readstate: %s", path); |
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38 if (close(fd) < 0) |
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39 err(1, "close: %s", path); |
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40 } |
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41 |
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42 static void |
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43 loadkey(char *keyfile) |
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44 { |
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45 int fd; |
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46 |
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47 if (keyfile == NULL) |
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48 return; |
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49 |
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50 fd = open(keyfile, O_RDONLY); |
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51 if (fd < 0) |
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52 err(1, "open: %s", keyfile); |
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53 if (readkey(fd, param.key, sizeof(param.key)) < 0) |
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54 printerr("readkey: %s", keyfile); |
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55 param.keyloaded = 1; |
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56 if (close(fd) < 0) |
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57 err(1, "close: %s", keyfile); |
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58 } |
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59 |
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60 static void |
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61 rm(struct sctx *sctx, struct bctx *bctx) |
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62 { |
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63 unsigned char md[MDSIZE]; |
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64 int n; |
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65 |
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66 while ((n = sget(sctx, md)) == MDSIZE) { |
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67 if (brm(bctx, md) < 0) |
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68 printerr("brm"); |
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69 } |
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70 if (n < 0) |
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71 printerr("sget"); |
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72 } |
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73 |
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74 static void |
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75 usage(void) |
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76 { |
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77 fprintf(stderr, "usage: %s [-v] [-k keyfile] [-r repo] name\n", argv0); |
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78 exit(1); |
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79 } |
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80 |
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81 int |
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82 main(int argc, char *argv[]) |
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83 { |
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84 char spath[PATH_MAX]; |
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85 char bpath[PATH_MAX]; |
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86 struct sctx *sctx; |
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87 struct bctx *bctx; |
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88 char *keyfile = NULL; |
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89 char *repo = "."; |
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90 int lfd; |
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91 |
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92 ARGBEGIN { |
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93 case 'k': |
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94 keyfile = EARGF(usage()); |
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95 break; |
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96 case 'r': |
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97 repo = EARGF(usage()); |
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98 break; |
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99 case 'v': |
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100 verbose++; |
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101 break; |
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102 default: |
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103 usage(); |
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104 } ARGEND |
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105 |
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106 if (argc != 1) |
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107 usage(); |
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108 |
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109 if (snprintf(spath, sizeof(spath), "%s/archive/%s", |
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110 repo, argv[0]) >= sizeof(spath)) |
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111 errx(1, "snprintf: %s: path too long", spath); |
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112 if (snprintf(bpath, sizeof(bpath), "%s/storage", |
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113 repo) >= sizeof(bpath)) |
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114 errx(1, "snprintf: %s: path too long", bpath); |
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115 |
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116 if ((lfd = lockrepo(repo)) < 0) |
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117 errx(1, "failed to lock repository"); |
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118 |
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119 loadkey(keyfile); |
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120 loadstate(repo); |
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121 |
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122 if (sopen(spath, S_READ, 0600, &sctx) < 0) |
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123 printerr("sopen: %s", spath); |
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124 if (bopen(bpath, B_RDWR, 0600, &bctx) < 0) |
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125 printerr("bopen: %s", bpath); |
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126 |
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127 rm(sctx, bctx); |
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128 |
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129 if (bclose(bctx) < 0) |
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130 printerr("bclose: %s", bpath); |
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131 if (sclose(sctx) < 0) |
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132 printerr("sclose: %s", spath); |
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133 if (unlink(spath) < 0) |
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134 err(1, "unlink: %s", spath); |
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135 |
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136 if (unlockrepo(lfd) < 0) |
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137 errx(1, "failed to unlock repository"); |
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138 |
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139 return 0; |
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140 } |
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