RPM spec: include git-p4 in the list of all packages.
[git/git.git] / pack-check.c
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1#include "cache.h"
2#include "pack.h"
3
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4static int verify_packfile(struct packed_git *p,
5 struct pack_window **w_curs)
f9253394 6{
c4001d92 7 off_t index_size = p->index_size;
42873078 8 const unsigned char *index_base = p->index_data;
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9 SHA_CTX ctx;
10 unsigned char sha1[20];
c4001d92 11 off_t offset = 0, pack_sig = p->pack_size - 20;
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12 uint32_t nr_objects, i;
13 int err;
f9253394 14
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15 /* Note that the pack header checks are actually performed by
16 * use_pack when it first opens the pack file. If anything
17 * goes wrong during those checks then the call will die out
18 * immediately.
19 */
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20
21 SHA1_Init(&ctx);
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22 while (offset < pack_sig) {
23 unsigned int remaining;
24 unsigned char *in = use_pack(p, w_curs, offset, &remaining);
25 offset += remaining;
26 if (offset > pack_sig)
c4001d92 27 remaining -= (unsigned int)(offset - pack_sig);
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28 SHA1_Update(&ctx, in, remaining);
29 }
f9253394 30 SHA1_Final(sha1, &ctx);
079afb18 31 if (hashcmp(sha1, use_pack(p, w_curs, pack_sig, NULL)))
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32 return error("Packfile %s SHA1 mismatch with itself",
33 p->pack_name);
42873078 34 if (hashcmp(sha1, index_base + index_size - 40))
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35 return error("Packfile %s SHA1 mismatch with idx",
36 p->pack_name);
079afb18 37 unuse_pack(w_curs);
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38
39 /* Make sure everything reachable from idx is valid. Since we
40 * have verified that nr_objects matches between idx and pack,
41 * we do not do scan-streaming check on the pack file.
42 */
079afb18 43 nr_objects = num_packed_objects(p);
326bf396 44 for (i = 0, err = 0; i < nr_objects; i++) {
f3bf9224 45 unsigned char sha1[20];
f3bf9224 46 void *data;
21666f1a 47 enum object_type type;
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48 unsigned long size;
49 off_t offset;
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50
51 if (nth_packed_object_sha1(p, i, sha1))
52 die("internal error pack-check nth-packed-object");
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53 offset = find_pack_entry_one(sha1, p);
54 if (!offset)
f3bf9224 55 die("internal error pack-check find-pack-entry-one");
21666f1a 56 data = unpack_entry(p, offset, &type, &size);
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57 if (!data) {
58 err = error("cannot unpack %s from %s",
59 sha1_to_hex(sha1), p->pack_name);
60 continue;
61 }
21666f1a 62 if (check_sha1_signature(sha1, data, size, typename(type))) {
1038f0c0 63 err = error("packed %s from %s is corrupt",
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64 sha1_to_hex(sha1), p->pack_name);
65 free(data);
66 continue;
67 }
68 free(data);
69 }
70
71 return err;
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72}
73
74
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75#define MAX_CHAIN 40
76
079afb18 77static void show_pack_info(struct packed_git *p)
f3bf9224 78{
326bf396 79 uint32_t nr_objects, i, chain_histogram[MAX_CHAIN];
ad8c80a5 80
079afb18 81 nr_objects = num_packed_objects(p);
473ab165 82 memset(chain_histogram, 0, sizeof(chain_histogram));
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83
84 for (i = 0; i < nr_objects; i++) {
85 unsigned char sha1[20], base_sha1[20];
21666f1a 86 const char *type;
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87 unsigned long size;
88 unsigned long store_size;
c4001d92 89 off_t offset;
f8f135c9 90 unsigned int delta_chain_length;
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91
92 if (nth_packed_object_sha1(p, i, sha1))
93 die("internal error pack-check nth-packed-object");
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94 offset = find_pack_entry_one(sha1, p);
95 if (!offset)
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96 die("internal error pack-check find-pack-entry-one");
97
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98 type = packed_object_info_detail(p, offset, &size, &store_size,
99 &delta_chain_length,
100 base_sha1);
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101 printf("%s ", sha1_to_hex(sha1));
102 if (!delta_chain_length)
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103 printf("%-6s %lu %"PRIuMAX"\n",
104 type, size, (uintmax_t)offset);
473ab165 105 else {
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106 printf("%-6s %lu %"PRIuMAX" %u %s\n",
107 type, size, (uintmax_t)offset,
ad8c80a5 108 delta_chain_length, sha1_to_hex(base_sha1));
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109 if (delta_chain_length < MAX_CHAIN)
110 chain_histogram[delta_chain_length]++;
111 else
112 chain_histogram[0]++;
113 }
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114 }
115
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116 for (i = 0; i < MAX_CHAIN; i++) {
117 if (!chain_histogram[i])
118 continue;
119 printf("chain length %s %d: %d object%s\n",
120 i ? "=" : ">=",
121 i ? i : MAX_CHAIN,
122 chain_histogram[i],
123 1 < chain_histogram[i] ? "s" : "");
124 }
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125}
126
127int verify_pack(struct packed_git *p, int verbose)
f9253394 128{
c4001d92 129 off_t index_size = p->index_size;
42873078 130 const unsigned char *index_base = p->index_data;
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131 SHA_CTX ctx;
132 unsigned char sha1[20];
133 int ret;
134
f3bf9224 135 ret = 0;
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136 /* Verify SHA1 sum of the index file */
137 SHA1_Init(&ctx);
c4001d92 138 SHA1_Update(&ctx, index_base, (unsigned int)(index_size - 20));
f9253394 139 SHA1_Final(sha1, &ctx);
42873078 140 if (hashcmp(sha1, index_base + index_size - 20))
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141 ret = error("Packfile index for %s SHA1 mismatch",
142 p->pack_name);
143
144 if (!ret) {
145 /* Verify pack file */
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146 struct pack_window *w_curs = NULL;
147 ret = verify_packfile(p, &w_curs);
148 unuse_pack(&w_curs);
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149 }
150
151 if (verbose) {
152 if (ret)
153 printf("%s: bad\n", p->pack_name);
154 else {
079afb18 155 show_pack_info(p);
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156 printf("%s: ok\n", p->pack_name);
157 }
158 }
f9253394 159
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160 return ret;
161}