Do not perform cross-directory renames when creating packs
[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[] = {
1b1dd23f 10 "git prune [-n] [--expire <time>] [--] [<head>...]",
629de472
MB
11 NULL
12};
96f1e58f 13static int show_only;
f01913e4 14static unsigned long expire;
ba84a797 15
0e8316cc
BC
16static int prune_tmp_object(char *path, const char *filename)
17{
18 const char *fullpath = mkpath("%s/%s", path, filename);
19 if (expire) {
20 struct stat st;
21 if (lstat(fullpath, &st))
22 return error("Could not stat '%s'", fullpath);
23 if (st.st_mtime > expire)
24 return 0;
25 }
26 printf("Removing stale temporary file %s\n", fullpath);
27 if (!show_only)
28 unlink(fullpath);
29 return 0;
30}
31
ba84a797
LT
32static int prune_object(char *path, const char *filename, const unsigned char *sha1)
33{
f01913e4
JS
34 const char *fullpath = mkpath("%s/%s", path, filename);
35 if (expire) {
36 struct stat st;
37 if (lstat(fullpath, &st))
38 return error("Could not stat '%s'", fullpath);
39 if (st.st_mtime > expire)
40 return 0;
41 }
ba84a797 42 if (show_only) {
21666f1a
NP
43 enum object_type type = sha1_object_info(sha1, NULL);
44 printf("%s %s\n", sha1_to_hex(sha1),
45 (type > 0) ? typename(type) : "unknown");
3254d218 46 } else
f01913e4 47 unlink(fullpath);
ba84a797
LT
48 return 0;
49}
50
51static int prune_dir(int i, char *path)
52{
53 DIR *dir = opendir(path);
54 struct dirent *de;
55
56 if (!dir)
57 return 0;
58
59 while ((de = readdir(dir)) != NULL) {
60 char name[100];
61 unsigned char sha1[20];
62 int len = strlen(de->d_name);
63
64 switch (len) {
65 case 2:
66 if (de->d_name[1] != '.')
67 break;
68 case 1:
69 if (de->d_name[0] != '.')
70 break;
71 continue;
72 case 38:
73 sprintf(name, "%02x", i);
74 memcpy(name+2, de->d_name, len+1);
75 if (get_sha1_hex(name, sha1) < 0)
76 break;
77
78 /*
79 * Do we know about this object?
80 * It must have been reachable
81 */
82 if (lookup_object(sha1))
83 continue;
84
85 prune_object(path, de->d_name, sha1);
86 continue;
87 }
3d32a46b
BC
88 if (!prefixcmp(de->d_name, "tmp_obj_")) {
89 prune_tmp_object(path, de->d_name);
90 continue;
91 }
ba84a797
LT
92 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
93 }
3254d218
NP
94 if (!show_only)
95 rmdir(path);
ba84a797
LT
96 closedir(dir);
97 return 0;
98}
99
100static void prune_object_dir(const char *path)
101{
102 int i;
103 for (i = 0; i < 256; i++) {
104 static char dir[4096];
105 sprintf(dir, "%s/%02x", path, i);
106 prune_dir(i, dir);
107 }
108}
109
8464010f
DST
110/*
111 * Write errors (particularly out of space) can result in
112 * failed temporary packs (and more rarely indexes and other
113 * files begining with "tmp_") accumulating in the
114 * object directory.
115 */
116static void remove_temporary_files(void)
117{
118 DIR *dir;
119 struct dirent *de;
120 char* dirname=get_object_directory();
121
122 dir = opendir(dirname);
123 if (!dir) {
124 fprintf(stderr, "Unable to open object directory %s\n",
125 dirname);
126 return;
127 }
0e8316cc
BC
128 while ((de = readdir(dir)) != NULL)
129 if (!prefixcmp(de->d_name, "tmp_"))
130 prune_tmp_object(dirname, 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"),
140 OPT_DATE(0, "expire", &expire,
141 "expire objects older than <time>"),
142 OPT_END()
143 };
ba84a797 144
16157b80 145 save_commit_buffer = 0;
a633fca0 146 init_revisions(&revs, prefix);
ba84a797 147
629de472 148 argc = parse_options(argc, argv, options, prune_usage, 0);
fe308f53
JH
149 while (argc--) {
150 unsigned char sha1[20];
151 const char *name = *argv++;
152
153 if (!get_sha1(name, sha1)) {
154 struct object *object = parse_object(sha1);
155 if (!object)
156 die("bad object: %s", name);
157 add_pending_object(&revs, object, "");
158 }
159 else
160 die("unrecognized argument: %s", name);
161 }
629de472 162 mark_reachable_objects(&revs, 1);
ba84a797
LT
163 prune_object_dir(get_object_directory());
164
2eb53e65 165 prune_packed_objects(show_only);
8464010f 166 remove_temporary_files();
ba84a797
LT
167 return 0;
168}