-
Notifications
You must be signed in to change notification settings - Fork 13
/
builtin-prune.c
163 lines (147 loc) · 3.46 KB
/
builtin-prune.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "builtin.h"
#include "reachable.h"
#include "parse-options.h"
static const char * const prune_usage[] = {
"git-prune [-n] [--expire <time>] [--] [<head>...]",
NULL
};
static int show_only;
static unsigned long expire;
static int prune_object(char *path, const char *filename, const unsigned char *sha1)
{
const char *fullpath = mkpath("%s/%s", path, filename);
if (expire) {
struct stat st;
if (lstat(fullpath, &st))
return error("Could not stat '%s'", fullpath);
if (st.st_mtime > expire)
return 0;
}
if (show_only) {
enum object_type type = sha1_object_info(sha1, NULL);
printf("%s %s\n", sha1_to_hex(sha1),
(type > 0) ? typename(type) : "unknown");
} else
unlink(fullpath);
return 0;
}
static int prune_dir(int i, char *path)
{
DIR *dir = opendir(path);
struct dirent *de;
if (!dir)
return 0;
while ((de = readdir(dir)) != NULL) {
char name[100];
unsigned char sha1[20];
int len = strlen(de->d_name);
switch (len) {
case 2:
if (de->d_name[1] != '.')
break;
case 1:
if (de->d_name[0] != '.')
break;
continue;
case 38:
sprintf(name, "%02x", i);
memcpy(name+2, de->d_name, len+1);
if (get_sha1_hex(name, sha1) < 0)
break;
/*
* Do we know about this object?
* It must have been reachable
*/
if (lookup_object(sha1))
continue;
prune_object(path, de->d_name, sha1);
continue;
}
fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
}
if (!show_only)
rmdir(path);
closedir(dir);
return 0;
}
static void prune_object_dir(const char *path)
{
int i;
for (i = 0; i < 256; i++) {
static char dir[4096];
sprintf(dir, "%s/%02x", path, i);
prune_dir(i, dir);
}
}
/*
* Write errors (particularly out of space) can result in
* failed temporary packs (and more rarely indexes and other
* files begining with "tmp_") accumulating in the
* object directory.
*/
static void remove_temporary_files(void)
{
DIR *dir;
struct dirent *de;
char* dirname=get_object_directory();
dir = opendir(dirname);
if (!dir) {
fprintf(stderr, "Unable to open object directory %s\n",
dirname);
return;
}
while ((de = readdir(dir)) != NULL) {
if (!prefixcmp(de->d_name, "tmp_")) {
char name[PATH_MAX];
int c = snprintf(name, PATH_MAX, "%s/%s",
dirname, de->d_name);
if (c < 0 || c >= PATH_MAX)
continue;
if (expire) {
struct stat st;
if (stat(name, &st) != 0 || st.st_mtime >= expire)
continue;
}
printf("Removing stale temporary file %s\n", name);
if (!show_only)
unlink(name);
}
}
closedir(dir);
}
int cmd_prune(int argc, const char **argv, const char *prefix)
{
struct rev_info revs;
const struct option options[] = {
OPT_BOOLEAN('n', NULL, &show_only,
"do not remove, show only"),
OPT_DATE(0, "expire", &expire,
"expire objects older than <time>"),
OPT_END()
};
save_commit_buffer = 0;
init_revisions(&revs, prefix);
argc = parse_options(argc, argv, options, prune_usage, 0);
while (argc--) {
unsigned char sha1[20];
const char *name = *argv++;
if (!get_sha1(name, sha1)) {
struct object *object = parse_object(sha1);
if (!object)
die("bad object: %s", name);
add_pending_object(&revs, object, "");
}
else
die("unrecognized argument: %s", name);
}
mark_reachable_objects(&revs, 1);
prune_object_dir(get_object_directory());
sync();
prune_packed_objects(show_only);
remove_temporary_files();
return 0;
}