Merge branch 'mh/maint-sendmail-cc-doc'
[git/git.git] / builtin-prune.c
CommitLineData
ba84a797 1#include "cache.h"
ba84a797 2#include "commit.h"
ba84a797
LT
3#include "diff.h"
4#include "revision.h"
5#include "builtin.h"
94421474 6#include "reachable.h"
629de472 7#include "parse-options.h"
ba84a797 8
629de472 9static const char * const prune_usage[] = {
b35ddf41 10 "git prune [-n] [-v] [--expire <time>] [--] [<head>...]",
629de472
MB
11 NULL
12};
96f1e58f 13static int show_only;
b35ddf41 14static int verbose;
f01913e4 15static unsigned long expire;
ba84a797 16
db87e396 17static int prune_tmp_object(const char *path, const char *filename)
0e8316cc
BC
18{
19 const char *fullpath = mkpath("%s/%s", path, filename);
20 if (expire) {
21 struct stat st;
22 if (lstat(fullpath, &st))
23 return error("Could not stat '%s'", fullpath);
24 if (st.st_mtime > expire)
25 return 0;
26 }
27 printf("Removing stale temporary file %s\n", fullpath);
28 if (!show_only)
29 unlink(fullpath);
30 return 0;
31}
32
ba84a797
LT
33static int prune_object(char *path, const char *filename, const unsigned char *sha1)
34{
f01913e4
JS
35 const char *fullpath = mkpath("%s/%s", path, filename);
36 if (expire) {
37 struct stat st;
38 if (lstat(fullpath, &st))
39 return error("Could not stat '%s'", fullpath);
40 if (st.st_mtime > expire)
41 return 0;
42 }
b35ddf41 43 if (show_only || verbose) {
21666f1a
NP
44 enum object_type type = sha1_object_info(sha1, NULL);
45 printf("%s %s\n", sha1_to_hex(sha1),
46 (type > 0) ? typename(type) : "unknown");
b35ddf41
MG
47 }
48 if (!show_only)
f01913e4 49 unlink(fullpath);
ba84a797
LT
50 return 0;
51}
52
53static int prune_dir(int i, char *path)
54{
55 DIR *dir = opendir(path);
56 struct dirent *de;
57
58 if (!dir)
59 return 0;
60
61 while ((de = readdir(dir)) != NULL) {
62 char name[100];
63 unsigned char sha1[20];
64 int len = strlen(de->d_name);
65
66 switch (len) {
67 case 2:
68 if (de->d_name[1] != '.')
69 break;
70 case 1:
71 if (de->d_name[0] != '.')
72 break;
73 continue;
74 case 38:
75 sprintf(name, "%02x", i);
76 memcpy(name+2, de->d_name, len+1);
77 if (get_sha1_hex(name, sha1) < 0)
78 break;
79
80 /*
81 * Do we know about this object?
82 * It must have been reachable
83 */
84 if (lookup_object(sha1))
85 continue;
86
87 prune_object(path, de->d_name, sha1);
88 continue;
89 }
3d32a46b
BC
90 if (!prefixcmp(de->d_name, "tmp_obj_")) {
91 prune_tmp_object(path, de->d_name);
92 continue;
93 }
ba84a797
LT
94 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
95 }
3254d218
NP
96 if (!show_only)
97 rmdir(path);
ba84a797
LT
98 closedir(dir);
99 return 0;
100}
101
102static void prune_object_dir(const char *path)
103{
104 int i;
105 for (i = 0; i < 256; i++) {
106 static char dir[4096];
107 sprintf(dir, "%s/%02x", path, i);
108 prune_dir(i, dir);
109 }
110}
111
8464010f
DST
112/*
113 * Write errors (particularly out of space) can result in
114 * failed temporary packs (and more rarely indexes and other
db87e396
BC
115 * files begining with "tmp_") accumulating in the object
116 * and the pack directories.
8464010f 117 */
db87e396 118static void remove_temporary_files(const char *path)
8464010f
DST
119{
120 DIR *dir;
121 struct dirent *de;
8464010f 122
db87e396 123 dir = opendir(path);
8464010f 124 if (!dir) {
db87e396 125 fprintf(stderr, "Unable to open directory %s\n", path);
8464010f
DST
126 return;
127 }
0e8316cc
BC
128 while ((de = readdir(dir)) != NULL)
129 if (!prefixcmp(de->d_name, "tmp_"))
db87e396 130 prune_tmp_object(path, de->d_name);
8464010f
DST
131 closedir(dir);
132}
133
a633fca0 134int cmd_prune(int argc, const char **argv, const char *prefix)
ba84a797 135{
24304816 136 struct rev_info revs;
629de472
MB
137 const struct option options[] = {
138 OPT_BOOLEAN('n', NULL, &show_only,
139 "do not remove, show only"),
b35ddf41
MG
140 OPT_BOOLEAN('v', NULL, &verbose,
141 "report pruned objects"),
629de472
MB
142 OPT_DATE(0, "expire", &expire,
143 "expire objects older than <time>"),
144 OPT_END()
145 };
db87e396 146 char *s;
ba84a797 147
16157b80 148 save_commit_buffer = 0;
a633fca0 149 init_revisions(&revs, prefix);
ba84a797 150
629de472 151 argc = parse_options(argc, argv, options, prune_usage, 0);
fe308f53
JH
152 while (argc--) {
153 unsigned char sha1[20];
154 const char *name = *argv++;
155
156 if (!get_sha1(name, sha1)) {
157 struct object *object = parse_object(sha1);
158 if (!object)
159 die("bad object: %s", name);
160 add_pending_object(&revs, object, "");
161 }
162 else
163 die("unrecognized argument: %s", name);
164 }
629de472 165 mark_reachable_objects(&revs, 1);
ba84a797
LT
166 prune_object_dir(get_object_directory());
167
2eb53e65 168 prune_packed_objects(show_only);
db87e396
BC
169 remove_temporary_files(get_object_directory());
170 s = xstrdup(mkpath("%s/pack", get_object_directory()));
171 remove_temporary_files(s);
172 free(s);
ba84a797
LT
173 return 0;
174}