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1 | // SPDX-License-Identifier: BSD-3-Clause |
2 | /* Copyright 2016-2018, Intel Corporation */ | |
3 | ||
4 | /* | |
5 | * rm.c -- implementation of pmempool_rm() function | |
6 | */ | |
7 | #include <errno.h> | |
8 | #include <fcntl.h> | |
9 | ||
10 | #include "libpmempool.h" | |
11 | #include "out.h" | |
12 | #include "os.h" | |
13 | #include "util.h" | |
14 | #include "set.h" | |
15 | #include "file.h" | |
16 | ||
17 | #define PMEMPOOL_RM_ALL_FLAGS (\ | |
18 | PMEMPOOL_RM_FORCE |\ | |
19 | PMEMPOOL_RM_POOLSET_LOCAL |\ | |
20 | PMEMPOOL_RM_POOLSET_REMOTE) | |
21 | ||
22 | #define ERR_F(f, ...) do {\ | |
23 | if (CHECK_FLAG((f), FORCE))\ | |
24 | LOG(2, "!(ignored) " __VA_ARGS__);\ | |
25 | else\ | |
26 | ERR(__VA_ARGS__);\ | |
27 | } while (0) | |
28 | ||
29 | #define CHECK_FLAG(f, i) ((f) & PMEMPOOL_RM_##i) | |
30 | ||
31 | struct cb_args { | |
32 | unsigned flags; | |
33 | int error; | |
34 | }; | |
35 | ||
36 | /* | |
37 | * rm_local -- (internal) remove single local file | |
38 | */ | |
39 | static int | |
40 | rm_local(const char *path, unsigned flags, int is_part_file) | |
41 | { | |
42 | int ret = util_unlink_flock(path); | |
43 | if (!ret) { | |
44 | LOG(3, "%s: removed", path); | |
45 | return 0; | |
46 | } | |
47 | ||
48 | int oerrno = errno; | |
49 | os_stat_t buff; | |
50 | ret = os_stat(path, &buff); | |
51 | if (!ret) { | |
52 | if (S_ISDIR(buff.st_mode)) { | |
53 | errno = EISDIR; | |
54 | if (is_part_file) | |
55 | ERR("%s: removing file failed", path); | |
56 | else | |
57 | ERR("removing file failed"); | |
58 | return -1; | |
59 | } | |
60 | } | |
61 | ||
62 | errno = oerrno; | |
63 | ||
64 | if (is_part_file) | |
65 | ERR_F(flags, "%s: removing file failed", path); | |
66 | else | |
67 | ERR_F(flags, "removing file failed"); | |
68 | ||
69 | if (CHECK_FLAG(flags, FORCE)) | |
70 | return 0; | |
71 | ||
72 | return -1; | |
73 | } | |
74 | ||
75 | /* | |
76 | * rm_remote -- (internal) remove remote replica | |
77 | */ | |
78 | static int | |
79 | rm_remote(const char *node, const char *path, unsigned flags) | |
80 | { | |
81 | if (!Rpmem_remove) { | |
82 | ERR_F(flags, "cannot remove remote replica" | |
83 | " -- missing librpmem"); | |
84 | return -1; | |
85 | } | |
86 | ||
87 | int rpmem_flags = 0; | |
88 | if (CHECK_FLAG(flags, FORCE)) | |
89 | rpmem_flags |= RPMEM_REMOVE_FORCE; | |
90 | ||
91 | if (CHECK_FLAG(flags, POOLSET_REMOTE)) | |
92 | rpmem_flags |= RPMEM_REMOVE_POOL_SET; | |
93 | ||
94 | int ret = Rpmem_remove(node, path, rpmem_flags); | |
95 | if (ret) { | |
96 | ERR_F(flags, "%s/%s removing failed", node, path); | |
97 | if (CHECK_FLAG(flags, FORCE)) | |
98 | ret = 0; | |
99 | } else { | |
100 | LOG(3, "%s/%s: removed", node, path); | |
101 | } | |
102 | ||
103 | return ret; | |
104 | } | |
105 | ||
106 | /* | |
107 | * rm_cb -- (internal) foreach part callback | |
108 | */ | |
109 | static int | |
110 | rm_cb(struct part_file *pf, void *arg) | |
111 | { | |
112 | struct cb_args *args = (struct cb_args *)arg; | |
113 | int ret; | |
114 | if (pf->is_remote) { | |
115 | ret = rm_remote(pf->remote->node_addr, pf->remote->pool_desc, | |
116 | args->flags); | |
117 | } else { | |
118 | ret = rm_local(pf->part->path, args->flags, 1); | |
119 | } | |
120 | ||
121 | if (ret) | |
122 | args->error = ret; | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | /* | |
128 | * pmempool_rmU -- remove pool files or poolsets | |
129 | */ | |
130 | #ifndef _WIN32 | |
131 | static inline | |
132 | #endif | |
133 | int | |
134 | pmempool_rmU(const char *path, unsigned flags) | |
135 | { | |
136 | LOG(3, "path %s flags %x", path, flags); | |
137 | int ret; | |
138 | ||
139 | if (flags & ~PMEMPOOL_RM_ALL_FLAGS) { | |
140 | ERR("invalid flags specified"); | |
141 | errno = EINVAL; | |
142 | return -1; | |
143 | } | |
144 | ||
145 | int is_poolset = util_is_poolset_file(path); | |
146 | if (is_poolset < 0) { | |
147 | os_stat_t buff; | |
148 | ret = os_stat(path, &buff); | |
149 | if (!ret) { | |
150 | if (S_ISDIR(buff.st_mode)) { | |
151 | errno = EISDIR; | |
152 | ERR("removing file failed"); | |
153 | return -1; | |
154 | } | |
155 | } | |
156 | ERR_F(flags, "removing file failed"); | |
157 | if (CHECK_FLAG(flags, FORCE)) | |
158 | return 0; | |
159 | ||
160 | return -1; | |
161 | } | |
162 | ||
163 | if (!is_poolset) { | |
164 | LOG(2, "%s: not a poolset file", path); | |
165 | return rm_local(path, flags, 0); | |
166 | } | |
167 | ||
168 | LOG(2, "%s: poolset file", path); | |
169 | ||
170 | /* fill up pool_set structure */ | |
171 | struct pool_set *set = NULL; | |
172 | int fd = os_open(path, O_RDONLY); | |
173 | if (fd == -1 || util_poolset_parse(&set, path, fd)) { | |
174 | ERR_F(flags, "parsing poolset file failed"); | |
175 | if (fd != -1) | |
176 | os_close(fd); | |
177 | if (CHECK_FLAG(flags, FORCE)) | |
178 | return 0; | |
179 | return -1; | |
180 | } | |
181 | os_close(fd); | |
182 | ||
183 | if (set->remote) { | |
184 | /* ignore error - it will be handled in rm_remote() */ | |
185 | (void) util_remote_load(); | |
186 | } | |
187 | ||
188 | util_poolset_free(set); | |
189 | ||
190 | struct cb_args args; | |
191 | args.flags = flags; | |
192 | args.error = 0; | |
193 | ret = util_poolset_foreach_part(path, rm_cb, &args); | |
194 | if (ret == -1) { | |
195 | ERR_F(flags, "parsing poolset file failed"); | |
196 | if (CHECK_FLAG(flags, FORCE)) | |
197 | return 0; | |
198 | ||
199 | return ret; | |
200 | } | |
201 | ||
202 | ASSERTeq(ret, 0); | |
203 | ||
204 | if (args.error) | |
205 | return args.error; | |
206 | ||
207 | if (CHECK_FLAG(flags, POOLSET_LOCAL)) { | |
208 | ret = rm_local(path, flags, 0); | |
209 | if (ret) { | |
210 | ERR_F(flags, "removing pool set file failed"); | |
211 | } else { | |
212 | LOG(3, "%s: removed", path); | |
213 | } | |
214 | ||
215 | if (CHECK_FLAG(flags, FORCE)) | |
216 | return 0; | |
217 | ||
218 | return ret; | |
219 | } | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | #ifndef _WIN32 | |
225 | /* | |
226 | * pmempool_rm -- remove pool files or poolsets | |
227 | */ | |
228 | int | |
229 | pmempool_rm(const char *path, unsigned flags) | |
230 | { | |
231 | return pmempool_rmU(path, flags); | |
232 | } | |
233 | #else | |
234 | /* | |
235 | * pmempool_rmW -- remove pool files or poolsets in widechar | |
236 | */ | |
237 | int | |
238 | pmempool_rmW(const wchar_t *path, unsigned flags) | |
239 | { | |
240 | char *upath = util_toUTF8(path); | |
241 | if (upath == NULL) { | |
242 | ERR("Invalid poolest/pool file path."); | |
243 | return -1; | |
244 | } | |
245 | ||
246 | int ret = pmempool_rmU(upath, flags); | |
247 | ||
248 | util_free_UTF8(upath); | |
249 | return ret; | |
250 | } | |
251 | #endif |