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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_garbage_collector.h>
ngx_int_t ngx_collect_garbage(ngx_gc_t *ctx, ngx_str_t *dname, ngx_int_t level)
{
int rc;
u_char *last;
size_t len;
ngx_err_t err;
ngx_str_t fname, buf;
ngx_dir_t dir;
buf.len = 0;
#if (NGX_SUPPRESS_WARN)
buf.data = NULL;
fname.data = NULL;
#endif
ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"gc dir \"%s\":%d", dname->data, dname->len);
if (ngx_open_dir(dname, &dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_open_dir_n " \"%s\" failed", dname->data);
return NGX_ERROR;
}
for ( ;; ) {
ngx_set_errno(0);
if (ngx_read_dir(&dir) == NGX_ERROR) {
err = ngx_errno;
if (err != NGX_ENOMOREFILES) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, err,
ngx_read_dir_n " \"%s\" failed", dname->data);
rc = NGX_ERROR;
} else {
rc = NGX_OK;
}
break;
}
len = ngx_de_namelen(&dir);
ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"gc name \"%s\":%d", ngx_de_name(&dir), len);
if (len == 1 && ngx_de_name(&dir)[0] == '.') {
continue;
}
if (len == 2
&& ngx_de_name(&dir)[0] == '.'
&& ngx_de_name(&dir)[1] == '.')
{
continue;
}
fname.len = dname->len + 1+ len;
if (fname.len + NGX_DIR_MASK_LEN > buf.len) {
if (buf.len) {
ngx_free(buf.data);
}
buf.len = dname->len + 1 + len + NGX_DIR_MASK_LEN;
if (!(buf.data = ngx_alloc(buf.len + 1, ctx->log))) {
return NGX_ABORT;
}
}
last = ngx_cpymem(buf.data, dname->data, dname->len);
*last++ = '/';
ngx_memcpy(last, ngx_de_name(&dir), len + 1);
fname.data = buf.data;
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"gc path: \"%s\"", fname.data);
if (!dir.valid_info) {
if (ngx_de_info(fname.data, &dir) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_de_info_n " \"%s\" failed", fname.data);
continue;
}
}
if (ngx_de_is_dir(&dir)) {
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"gc enter dir \"%s\"", fname.data);
if (level == -1
/* there can not be directory on the last level */
|| level == NGX_MAX_PATH_LEVEL
/* an directory from the old path hierarchy */
|| len != ctx->path->level[level])
{
if (ngx_collect_garbage(ctx, &fname, -1) == NGX_ABORT) {
return NGX_ABORT;
}
fname.data[fname.len] = '\0';
ngx_log_error(NGX_LOG_NOTICE, ctx->log, 0,
"delete old hierachy directory \"%s\"",
fname.data);
if (ngx_delete_dir(fname.data) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_delete_dir_n " \"%s\" failed",
fname.data);
} else {
ctx->deleted++;
ctx->freed += ngx_de_size(&dir);
}
continue;
}
if (ngx_collect_garbage(ctx, &fname, level + 1) == NGX_ABORT) {
return NGX_ABORT;
}
} else if (ngx_de_is_file(&dir)) {
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"gc file \"%s\"", fname.data);
if (level == -1
|| (level < NGX_MAX_PATH_LEVEL && ctx->path->level[level] != 0))
{
if (ngx_delete_file(fname.data) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_delete_file_n " \"%s\" failed",
fname.data);
} else {
ctx->deleted++;
ctx->freed += ngx_de_size(&dir);
}
continue;
}
if (ctx->handler(ctx, &fname, &dir) == NGX_ABORT) {
return NGX_ABORT;
}
} else {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
"the file \"%s\" has unknown type, deleting",
fname.data);
if (ngx_delete_file(fname.data) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_delete_file_n " \"%s\" failed", fname.data);
} else {
ctx->deleted++;
ctx->freed += ngx_de_size(&dir);
}
}
}
if (buf.len) {
ngx_free(buf.data);
}
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", fname.data);
}
return rc;
}
ngx_int_t ngx_garbage_collector_temp_handler(ngx_gc_t *ctx, ngx_str_t *name,
ngx_dir_t *dir)
{
/*
* We use mtime only and do not use atime because:
* on NTFS access time has a resolution of 1 hour,
* on NT FAT access time has a resolution of 1 day,
* Unices have the mount option "noatime".
*/
if (ngx_time() - ngx_de_mtime(dir) < 3600) {
return NGX_OK;
}
ngx_log_error(NGX_LOG_NOTICE, ctx->log, 0,
"delete the stale temporary file \"%s\"", name->data);
if (ngx_delete_file(name->data) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_delete_file_n " \"%s\" failed", name->data);
return NGX_ERROR;
}
ctx->deleted++;
ctx->freed += ngx_de_size(dir);
return NGX_OK;
}
|