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e0519353 | 1 | #ifndef lint |
7fd6e445 | 2 | static char sccsid[] = "@(#)utilities.c 3.20 (Berkeley) 85/02/18"; |
e0519353 KM |
3 | #endif |
4 | ||
ebd1f727 SL |
5 | /* Copyright (c) 1983 Regents of the University of California */ |
6 | ||
e0519353 KM |
7 | #include "restore.h" |
8 | ||
9 | /* | |
10 | * Insure that all the components of a pathname exist. | |
11 | */ | |
16e2b8d5 | 12 | pathcheck(name) |
e0519353 KM |
13 | char *name; |
14 | { | |
15 | register char *cp; | |
16 | struct entry *ep; | |
9f13f26d | 17 | char *start; |
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18 | |
19 | start = index(name, '/'); | |
9f13f26d | 20 | if (start == 0) |
16e2b8d5 | 21 | return; |
e0519353 KM |
22 | for (cp = start; *cp != '\0'; cp++) { |
23 | if (*cp != '/') | |
24 | continue; | |
25 | *cp = '\0'; | |
26 | ep = lookupname(name); | |
27 | if (ep == NIL) { | |
7432ff81 | 28 | ep = addentry(name, psearch(name), NODE); |
e0519353 KM |
29 | newnode(ep); |
30 | } | |
7fd6e445 | 31 | ep->e_flags |= NEW|KEEP; |
e0519353 KM |
32 | *cp = '/'; |
33 | } | |
34 | } | |
35 | ||
36 | /* | |
37 | * Change a name to a unique temporary name. | |
38 | */ | |
39 | mktempname(ep) | |
40 | register struct entry *ep; | |
41 | { | |
16e2b8d5 | 42 | char oldname[MAXPATHLEN]; |
e0519353 KM |
43 | |
44 | if (ep->e_flags & TMPNAME) | |
45 | badentry(ep, "mktempname: called with TMPNAME"); | |
46 | ep->e_flags |= TMPNAME; | |
7432ff81 | 47 | (void) strcpy(oldname, myname(ep)); |
16e2b8d5 KM |
48 | freename(ep->e_name); |
49 | ep->e_name = savename(gentempname(ep)); | |
50 | ep->e_namlen = strlen(ep->e_name); | |
e0519353 KM |
51 | renameit(oldname, myname(ep)); |
52 | } | |
53 | ||
16e2b8d5 KM |
54 | /* |
55 | * Generate a temporary name for an entry. | |
56 | */ | |
57 | char * | |
58 | gentempname(ep) | |
59 | struct entry *ep; | |
60 | { | |
61 | static char name[MAXPATHLEN]; | |
62 | struct entry *np; | |
63 | long i = 0; | |
64 | ||
65 | for (np = lookupino(ep->e_ino); np != NIL && np != ep; np = np->e_links) | |
66 | i++; | |
67 | if (np == NIL) | |
68 | badentry(ep, "not on ino list"); | |
e9a184e3 | 69 | (void) sprintf(name, "%s%d%d", TMPHDR, i, ep->e_ino); |
16e2b8d5 KM |
70 | return (name); |
71 | } | |
72 | ||
e0519353 KM |
73 | /* |
74 | * Rename a file or directory. | |
75 | */ | |
76 | renameit(from, to) | |
77 | char *from, *to; | |
78 | { | |
79 | if (rename(from, to) < 0) { | |
e9e7ecc4 KM |
80 | fprintf(stderr, "Warning: cannot rename %s to %s", from, to); |
81 | (void) fflush(stderr); | |
82 | perror(""); | |
d66e0e37 | 83 | return; |
e0519353 KM |
84 | } |
85 | vprintf(stdout, "rename %s to %s\n", from, to); | |
86 | } | |
87 | ||
88 | /* | |
89 | * Create a new node (directory). | |
90 | */ | |
91 | newnode(np) | |
92 | struct entry *np; | |
93 | { | |
94 | char *cp; | |
95 | ||
96 | if (np->e_type != NODE) | |
97 | badentry(np, "newnode: not a node"); | |
98 | cp = myname(np); | |
9f13f26d | 99 | if (mkdir(cp, 0777) < 0) { |
a7d37956 | 100 | np->e_flags |= EXISTED; |
d4ca0635 | 101 | fprintf(stderr, "Warning: "); |
7432ff81 | 102 | (void) fflush(stderr); |
d4ca0635 KM |
103 | perror(cp); |
104 | return; | |
e0519353 KM |
105 | } |
106 | vprintf(stdout, "Make node %s\n", cp); | |
107 | } | |
108 | ||
109 | /* | |
110 | * Remove an old node (directory). | |
111 | */ | |
112 | removenode(ep) | |
113 | register struct entry *ep; | |
114 | { | |
115 | char *cp; | |
116 | ||
117 | if (ep->e_type != NODE) | |
118 | badentry(ep, "removenode: not a node"); | |
119 | if (ep->e_entries != NIL) | |
120 | badentry(ep, "removenode: non-empty directory"); | |
d66e0e37 KM |
121 | ep->e_flags |= REMOVED; |
122 | ep->e_flags &= ~TMPNAME; | |
e0519353 KM |
123 | cp = myname(ep); |
124 | if (rmdir(cp) < 0) { | |
d66e0e37 | 125 | fprintf(stderr, "Warning: "); |
7432ff81 | 126 | (void) fflush(stderr); |
d66e0e37 KM |
127 | perror(cp); |
128 | return; | |
e0519353 | 129 | } |
e0519353 KM |
130 | vprintf(stdout, "Remove node %s\n", cp); |
131 | } | |
132 | ||
133 | /* | |
134 | * Remove a leaf. | |
135 | */ | |
136 | removeleaf(ep) | |
137 | register struct entry *ep; | |
138 | { | |
139 | char *cp; | |
140 | ||
141 | if (ep->e_type != LEAF) | |
142 | badentry(ep, "removeleaf: not a leaf"); | |
d66e0e37 KM |
143 | ep->e_flags |= REMOVED; |
144 | ep->e_flags &= ~TMPNAME; | |
e0519353 KM |
145 | cp = myname(ep); |
146 | if (unlink(cp) < 0) { | |
d66e0e37 | 147 | fprintf(stderr, "Warning: "); |
7432ff81 | 148 | (void) fflush(stderr); |
d66e0e37 KM |
149 | perror(cp); |
150 | return; | |
e0519353 | 151 | } |
e0519353 KM |
152 | vprintf(stdout, "Remove leaf %s\n", cp); |
153 | } | |
154 | ||
155 | /* | |
156 | * Create a link. | |
157 | */ | |
158 | linkit(existing, new, type) | |
159 | char *existing, *new; | |
160 | int type; | |
161 | { | |
162 | ||
163 | if (type == SYMLINK) { | |
164 | if (symlink(existing, new) < 0) { | |
d66e0e37 | 165 | fprintf(stderr, |
2eba41cd | 166 | "Warning: cannot create symbolic link %s->%s: ", |
e0519353 | 167 | new, existing); |
e9e7ecc4 KM |
168 | (void) fflush(stderr); |
169 | perror(""); | |
2eba41cd | 170 | return (FAIL); |
e0519353 KM |
171 | } |
172 | } else if (type == HARDLINK) { | |
173 | if (link(existing, new) < 0) { | |
d66e0e37 | 174 | fprintf(stderr, |
2eba41cd | 175 | "Warning: cannot create hard link %s->%s: ", |
e0519353 | 176 | new, existing); |
e9e7ecc4 KM |
177 | (void) fflush(stderr); |
178 | perror(""); | |
2eba41cd | 179 | return (FAIL); |
e0519353 KM |
180 | } |
181 | } else { | |
182 | panic("linkit: unknown type %d\n", type); | |
2eba41cd | 183 | return (FAIL); |
e0519353 KM |
184 | } |
185 | vprintf(stdout, "Create %s link %s->%s\n", | |
186 | type == SYMLINK ? "symbolic" : "hard", new, existing); | |
2eba41cd | 187 | return (GOOD); |
e0519353 KM |
188 | } |
189 | ||
190 | /* | |
191 | * find lowest number file (above "start") that needs to be extracted | |
192 | */ | |
193 | ino_t | |
194 | lowerbnd(start) | |
195 | ino_t start; | |
196 | { | |
197 | register struct entry *ep; | |
198 | ||
199 | for ( ; start < maxino; start++) { | |
200 | ep = lookupino(start); | |
7432ff81 | 201 | if (ep == NIL || ep->e_type == NODE) |
e0519353 | 202 | continue; |
16e2b8d5 | 203 | if (ep->e_flags & (NEW|EXTRACT)) |
e0519353 KM |
204 | return (start); |
205 | } | |
206 | return (start); | |
207 | } | |
208 | ||
209 | /* | |
210 | * find highest number file (below "start") that needs to be extracted | |
211 | */ | |
212 | ino_t | |
213 | upperbnd(start) | |
214 | ino_t start; | |
215 | { | |
216 | register struct entry *ep; | |
217 | ||
218 | for ( ; start > ROOTINO; start--) { | |
219 | ep = lookupino(start); | |
7432ff81 | 220 | if (ep == NIL || ep->e_type == NODE) |
e0519353 | 221 | continue; |
16e2b8d5 | 222 | if (ep->e_flags & (NEW|EXTRACT)) |
e0519353 KM |
223 | return (start); |
224 | } | |
225 | return (start); | |
226 | } | |
227 | ||
228 | /* | |
229 | * report on a badly formed entry | |
230 | */ | |
231 | badentry(ep, msg) | |
232 | register struct entry *ep; | |
233 | char *msg; | |
234 | { | |
e0519353 KM |
235 | |
236 | fprintf(stderr, "bad entry: %s\n", msg); | |
237 | fprintf(stderr, "name: %s\n", myname(ep)); | |
238 | fprintf(stderr, "parent name %s\n", myname(ep->e_parent)); | |
239 | if (ep->e_sibling != NIL) | |
240 | fprintf(stderr, "sibling name: %s\n", myname(ep->e_sibling)); | |
241 | if (ep->e_entries != NIL) | |
242 | fprintf(stderr, "next entry name: %s\n", myname(ep->e_entries)); | |
243 | if (ep->e_links != NIL) | |
244 | fprintf(stderr, "next link name: %s\n", myname(ep->e_links)); | |
16e2b8d5 KM |
245 | if (ep->e_next != NIL) |
246 | fprintf(stderr, "next hashchain name: %s\n", myname(ep->e_next)); | |
e0519353 KM |
247 | fprintf(stderr, "entry type: %s\n", |
248 | ep->e_type == NODE ? "NODE" : "LEAF"); | |
249 | fprintf(stderr, "inode number: %ld\n", ep->e_ino); | |
55f85ba7 KM |
250 | panic("flags: %s\n", flagvalues(ep)); |
251 | } | |
252 | ||
253 | /* | |
254 | * Construct a string indicating the active flag bits of an entry. | |
255 | */ | |
256 | char * | |
257 | flagvalues(ep) | |
258 | register struct entry *ep; | |
259 | { | |
260 | static char flagbuf[BUFSIZ]; | |
261 | ||
262 | (void) strcpy(flagbuf, "|NIL"); | |
e0519353 KM |
263 | flagbuf[0] = '\0'; |
264 | if (ep->e_flags & REMOVED) | |
55f85ba7 | 265 | (void) strcat(flagbuf, "|REMOVED"); |
e0519353 | 266 | if (ep->e_flags & TMPNAME) |
55f85ba7 | 267 | (void) strcat(flagbuf, "|TMPNAME"); |
e0519353 | 268 | if (ep->e_flags & EXTRACT) |
55f85ba7 | 269 | (void) strcat(flagbuf, "|EXTRACT"); |
e0519353 | 270 | if (ep->e_flags & NEW) |
55f85ba7 | 271 | (void) strcat(flagbuf, "|NEW"); |
e0519353 | 272 | if (ep->e_flags & KEEP) |
55f85ba7 | 273 | (void) strcat(flagbuf, "|KEEP"); |
a7d37956 KM |
274 | if (ep->e_flags & EXISTED) |
275 | (void) strcat(flagbuf, "|EXISTED"); | |
55f85ba7 | 276 | return (&flagbuf[1]); |
e0519353 KM |
277 | } |
278 | ||
38bbfe41 | 279 | /* |
7432ff81 KM |
280 | * Check to see if a name is on a dump tape. |
281 | */ | |
282 | ino_t | |
283 | dirlookup(name) | |
284 | char *name; | |
285 | { | |
286 | ino_t ino; | |
287 | ||
288 | ino = psearch(name); | |
289 | if (ino == 0 || BIT(ino, dumpmap) == 0) | |
290 | fprintf(stderr, "%s is not on tape\n", name); | |
291 | return (ino); | |
292 | } | |
293 | ||
e0519353 | 294 | /* |
7432ff81 | 295 | * Elicit a reply. |
e0519353 KM |
296 | */ |
297 | reply(question) | |
298 | char *question; | |
299 | { | |
300 | char c; | |
301 | ||
302 | fprintf(stderr, "%s? ", question); | |
303 | do { | |
304 | fprintf(stderr, "[yn] "); | |
e9e7ecc4 | 305 | (void) fflush(stderr); |
7432ff81 KM |
306 | c = getc(terminal); |
307 | while (c != '\n' && getc(terminal) != '\n') | |
b8eb5f1f KM |
308 | if (feof(terminal)) |
309 | done(1); | |
e0519353 KM |
310 | } while (c != 'y' && c != 'n'); |
311 | if (c == 'y') | |
312 | return (GOOD); | |
313 | return (FAIL); | |
314 | } | |
7432ff81 | 315 | |
7432ff81 KM |
316 | /* |
317 | * handle unexpected inconsistencies | |
318 | */ | |
319 | /* VARARGS1 */ | |
320 | panic(msg, d1, d2) | |
321 | char *msg; | |
322 | long d1, d2; | |
323 | { | |
324 | ||
325 | fprintf(stderr, msg, d1, d2); | |
326 | if (reply("abort") == GOOD) { | |
327 | if (reply("dump core") == GOOD) | |
328 | abort(); | |
329 | done(1); | |
330 | } | |
331 | } |