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Commit | Line | Data |
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20222118 LT |
1 | #include <sys/types.h> |
2 | #include <dirent.h> | |
3 | ||
4b182421 | 4 | #include "cache.h" |
ff5ebe39 DB |
5 | #include "commit.h" |
6 | #include "tree.h" | |
7 | #include "blob.h" | |
c418eda4 | 8 | #include "tag.h" |
ff5ebe39 DB |
9 | |
10 | #define REACHABLE 0x0001 | |
d9839e03 | 11 | |
ab7df187 | 12 | static int show_root = 0; |
889262ea | 13 | static int show_tags = 0; |
d9839e03 | 14 | static int show_unreachable = 0; |
d9839e03 LT |
15 | static unsigned char head_sha1[20]; |
16 | ||
8ba0bbb2 LT |
17 | static void check_connectivity(void) |
18 | { | |
19 | int i; | |
20 | ||
8ba0bbb2 | 21 | /* Look up all the requirements, warn about missing objects.. */ |
ff5ebe39 DB |
22 | for (i = 0; i < nr_objs; i++) { |
23 | struct object *obj = objs[i]; | |
c418eda4 | 24 | struct object_list *refs; |
8ba0bbb2 | 25 | |
3a6a23e6 LT |
26 | if (!obj->parsed) { |
27 | printf("missing %s %s\n", obj->type, sha1_to_hex(obj->sha1)); | |
28 | continue; | |
29 | } | |
30 | ||
31 | for (refs = obj->refs; refs; refs = refs->next) { | |
32 | if (refs->item->parsed) | |
33 | continue; | |
34 | printf("broken link from %7s %s\n", | |
35 | obj->type, sha1_to_hex(obj->sha1)); | |
36 | printf(" to %7s %s\n", | |
37 | obj->type, sha1_to_hex(refs->item->sha1)); | |
38 | } | |
39 | ||
40 | /* Don't bother with tag reachability. */ | |
41 | if (obj->type == tag_type) | |
42 | continue; | |
43 | ||
ff5ebe39 | 44 | if (show_unreachable && !(obj->flags & REACHABLE)) { |
f43b8abc | 45 | printf("unreachable %s %s\n", obj->type, sha1_to_hex(obj->sha1)); |
8ba0bbb2 | 46 | continue; |
d9839e03 | 47 | } |
8ba0bbb2 | 48 | |
ff5ebe39 DB |
49 | if (!obj->used) { |
50 | printf("dangling %s %s\n", obj->type, | |
51 | sha1_to_hex(obj->sha1)); | |
d9839e03 | 52 | } |
8ba0bbb2 LT |
53 | } |
54 | } | |
55 | ||
c418eda4 | 56 | static int fsck_tree(struct tree *item) |
20222118 | 57 | { |
ff5ebe39 DB |
58 | if (item->has_full_path) { |
59 | fprintf(stderr, "warning: fsck-cache: tree %s " | |
c418eda4 DB |
60 | "has full pathnames in it\n", |
61 | sha1_to_hex(item->object.sha1)); | |
1ea34e36 | 62 | } |
59c1e249 | 63 | return 0; |
1ea34e36 LT |
64 | } |
65 | ||
c418eda4 | 66 | static int fsck_commit(struct commit *commit) |
1ea34e36 | 67 | { |
ff5ebe39 | 68 | if (!commit->tree) |
1ea34e36 | 69 | return -1; |
ab7df187 | 70 | if (!commit->parents && show_root) |
c418eda4 | 71 | printf("root %s\n", sha1_to_hex(commit->object.sha1)); |
e6948b6d | 72 | if (!commit->date) |
c418eda4 DB |
73 | printf("bad commit date in %s\n", |
74 | sha1_to_hex(commit->object.sha1)); | |
4728b861 LT |
75 | return 0; |
76 | } | |
77 | ||
c418eda4 | 78 | static int fsck_tag(struct tag *tag) |
ec4465ad | 79 | { |
889262ea LT |
80 | if (!show_tags) |
81 | return 0; | |
82 | ||
c418eda4 DB |
83 | printf("tagged %s %s", |
84 | tag->tagged->type, | |
85 | sha1_to_hex(tag->tagged->sha1)); | |
86 | printf(" (%s) in %s\n", | |
87 | tag->tag, sha1_to_hex(tag->object.sha1)); | |
ff5ebe39 | 88 | return 0; |
20222118 LT |
89 | } |
90 | ||
91 | static int fsck_name(char *hex) | |
92 | { | |
93 | unsigned char sha1[20]; | |
94 | if (!get_sha1_hex(hex, sha1)) { | |
c418eda4 DB |
95 | struct object *obj = parse_object(sha1); |
96 | if (!obj) | |
97 | return -1; | |
98 | if (obj->type == blob_type) | |
99 | return 0; | |
100 | if (obj->type == tree_type) | |
101 | return fsck_tree((struct tree *) obj); | |
102 | if (obj->type == commit_type) | |
103 | return fsck_commit((struct commit *) obj); | |
104 | if (obj->type == tag_type) | |
105 | return fsck_tag((struct tag *) obj); | |
20222118 LT |
106 | } |
107 | return -1; | |
108 | } | |
109 | ||
110 | static int fsck_dir(int i, char *path) | |
111 | { | |
112 | DIR *dir = opendir(path); | |
113 | struct dirent *de; | |
114 | ||
115 | if (!dir) { | |
2de381f9 | 116 | return error("missing sha1 directory '%s'", path); |
20222118 LT |
117 | } |
118 | ||
119 | while ((de = readdir(dir)) != NULL) { | |
120 | char name[100]; | |
121 | int len = strlen(de->d_name); | |
122 | ||
123 | switch (len) { | |
124 | case 2: | |
125 | if (de->d_name[1] != '.') | |
126 | break; | |
127 | case 1: | |
128 | if (de->d_name[0] != '.') | |
129 | break; | |
130 | continue; | |
131 | case 38: | |
132 | sprintf(name, "%02x", i); | |
133 | memcpy(name+2, de->d_name, len+1); | |
134 | if (!fsck_name(name)) | |
135 | continue; | |
136 | } | |
137 | fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name); | |
138 | } | |
139 | closedir(dir); | |
140 | return 0; | |
141 | } | |
142 | ||
143 | int main(int argc, char **argv) | |
144 | { | |
bcee6fd8 | 145 | int i, heads; |
20222118 LT |
146 | char *sha1_dir; |
147 | ||
889262ea LT |
148 | for (i = 1; i < argc; i++) { |
149 | const char *arg = argv[i]; | |
150 | ||
151 | if (!strcmp(arg, "--unreachable")) { | |
152 | show_unreachable = 1; | |
153 | continue; | |
154 | } | |
155 | if (!strcmp(arg, "--tags")) { | |
156 | show_tags = 1; | |
157 | continue; | |
158 | } | |
ab7df187 LT |
159 | if (!strcmp(arg, "--root")) { |
160 | show_root = 1; | |
161 | continue; | |
162 | } | |
889262ea LT |
163 | if (*arg == '-') |
164 | usage("fsck-cache [--tags] [[--unreachable] <head-sha1>*]"); | |
165 | } | |
166 | ||
bcee6fd8 LT |
167 | sha1_dir = getenv(DB_ENVIRONMENT) ? : DEFAULT_DB_ENVIRONMENT; |
168 | for (i = 0; i < 256; i++) { | |
169 | static char dir[4096]; | |
170 | sprintf(dir, "%s/%02x", sha1_dir, i); | |
171 | fsck_dir(i, dir); | |
172 | } | |
173 | ||
174 | heads = 0; | |
d9839e03 | 175 | for (i = 1; i < argc; i++) { |
889262ea LT |
176 | const char *arg = argv[i]; |
177 | ||
178 | if (*arg == '-') | |
d9839e03 | 179 | continue; |
889262ea LT |
180 | |
181 | if (!get_sha1_hex(arg, head_sha1)) { | |
e1a1388d JF |
182 | struct commit *commit = lookup_commit(head_sha1); |
183 | struct object *obj; | |
184 | ||
185 | /* Error is printed by lookup_commit(). */ | |
186 | if (!commit) | |
187 | continue; | |
188 | ||
189 | obj = &commit->object; | |
ff5ebe39 DB |
190 | obj->used = 1; |
191 | mark_reachable(obj, REACHABLE); | |
bcee6fd8 | 192 | heads++; |
d9839e03 LT |
193 | continue; |
194 | } | |
889262ea | 195 | error("expected sha1, got %s", arg); |
d9839e03 | 196 | } |
d9839e03 | 197 | |
bcee6fd8 LT |
198 | if (!heads) { |
199 | if (show_unreachable) { | |
200 | fprintf(stderr, "unable to do reachability without a head\n"); | |
201 | show_unreachable = 0; | |
202 | } | |
203 | fprintf(stderr, "expect dangling commits - potential heads - due to lack of head information\n"); | |
20222118 | 204 | } |
bcee6fd8 | 205 | |
8ba0bbb2 | 206 | check_connectivity(); |
20222118 LT |
207 | return 0; |
208 | } |