]>
Commit | Line | Data |
---|---|---|
2bd0ea18 NS |
1 | /* |
2 | * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
33 | #include <libxfs.h> | |
34 | #include "command.h" | |
35 | #include "data.h" | |
36 | #include "convert.h" | |
37 | #include "output.h" | |
38 | #include "mount.h" | |
39 | ||
40 | #define M(A) (1 << CT_ ## A) | |
41 | #define agblock_to_bytes(x) \ | |
42 | ((__uint64_t)(x) << mp->m_sb.sb_blocklog) | |
43 | #define agino_to_bytes(x) \ | |
44 | ((__uint64_t)(x) << mp->m_sb.sb_inodelog) | |
45 | #define agnumber_to_bytes(x) \ | |
46 | agblock_to_bytes((__uint64_t)(x) * mp->m_sb.sb_agblocks) | |
47 | #define daddr_to_bytes(x) \ | |
48 | ((__uint64_t)(x) << BBSHIFT) | |
49 | #define fsblock_to_bytes(x) \ | |
50 | (agnumber_to_bytes(XFS_FSB_TO_AGNO(mp, (x))) + \ | |
51 | agblock_to_bytes(XFS_FSB_TO_AGBNO(mp, (x)))) | |
52 | #define ino_to_bytes(x) \ | |
53 | (agnumber_to_bytes(XFS_INO_TO_AGNO(mp, (x))) + \ | |
54 | agino_to_bytes(XFS_INO_TO_AGINO(mp, (x)))) | |
55 | #define inoidx_to_bytes(x) \ | |
56 | ((__uint64_t)(x) << mp->m_sb.sb_inodelog) | |
57 | ||
58 | typedef enum { | |
59 | CT_NONE = -1, | |
60 | CT_AGBLOCK, /* xfs_agblock_t */ | |
61 | CT_AGINO, /* xfs_agino_t */ | |
62 | CT_AGNUMBER, /* xfs_agno_t */ | |
63 | CT_BBOFF, /* byte offset in daddr */ | |
64 | CT_BLKOFF, /* byte offset in fsb/agb */ | |
65 | CT_BYTE, /* byte in filesystem */ | |
66 | CT_DADDR, /* daddr_t */ | |
67 | CT_FSBLOCK, /* xfs_fsblock_t */ | |
68 | CT_INO, /* xfs_ino_t */ | |
69 | CT_INOIDX, /* index of inode in fsblock */ | |
70 | CT_INOOFF, /* byte offset in inode */ | |
71 | NCTS | |
72 | } ctype_t; | |
73 | ||
74 | typedef struct ctydesc { | |
75 | ctype_t ctype; | |
76 | int allowed; | |
77 | const char **names; | |
78 | } ctydesc_t; | |
79 | ||
80 | typedef union { | |
81 | xfs_agblock_t agblock; | |
82 | xfs_agino_t agino; | |
83 | xfs_agnumber_t agnumber; | |
84 | int bboff; | |
85 | int blkoff; | |
86 | __uint64_t byte; | |
87 | xfs_daddr_t daddr; | |
88 | xfs_fsblock_t fsblock; | |
89 | xfs_ino_t ino; | |
90 | int inoidx; | |
91 | int inooff; | |
92 | } cval_t; | |
93 | ||
94 | static __uint64_t bytevalue(ctype_t ctype, cval_t *val); | |
95 | static int convert_f(int argc, char **argv); | |
96 | static int getvalue(char *s, ctype_t ctype, cval_t *val); | |
97 | static ctype_t lookupcty(char *ctyname); | |
98 | ||
99 | static const char *agblock_names[] = { "agblock", "agbno", NULL }; | |
100 | static const char *agino_names[] = { "agino", "aginode", NULL }; | |
101 | static const char *agnumber_names[] = { "agnumber", "agno", NULL }; | |
102 | static const char *bboff_names[] = { "bboff", "daddroff", NULL }; | |
103 | static const char *blkoff_names[] = { "blkoff", "fsboff", "agboff", | |
104 | NULL }; | |
105 | static const char *byte_names[] = { "byte", "fsbyte", NULL }; | |
106 | static const char *daddr_names[] = { "daddr", "bb", NULL }; | |
107 | static const char *fsblock_names[] = { "fsblock", "fsb", "fsbno", NULL }; | |
108 | static const char *ino_names[] = { "ino", "inode", NULL }; | |
109 | static const char *inoidx_names[] = { "inoidx", "offset", NULL }; | |
110 | static const char *inooff_names[] = { "inooff", "inodeoff", NULL }; | |
111 | ||
112 | static const ctydesc_t ctydescs[NCTS] = { | |
113 | { CT_AGBLOCK, M(AGNUMBER)|M(BBOFF)|M(BLKOFF)|M(INOIDX)|M(INOOFF), | |
114 | agblock_names }, | |
115 | { CT_AGINO, M(AGNUMBER)|M(INOOFF), agino_names }, | |
116 | { CT_AGNUMBER, | |
117 | M(AGBLOCK)|M(AGINO)|M(BBOFF)|M(BLKOFF)|M(INOIDX)|M(INOOFF), | |
118 | agnumber_names }, | |
119 | { CT_BBOFF, M(AGBLOCK)|M(AGNUMBER)|M(DADDR)|M(FSBLOCK), bboff_names }, | |
120 | { CT_BLKOFF, M(AGBLOCK)|M(AGNUMBER)|M(FSBLOCK), blkoff_names }, | |
121 | { CT_BYTE, 0, byte_names }, | |
122 | { CT_DADDR, M(BBOFF), daddr_names }, | |
123 | { CT_FSBLOCK, M(BBOFF)|M(BLKOFF)|M(INOIDX), fsblock_names }, | |
124 | { CT_INO, M(INOOFF), ino_names }, | |
125 | { CT_INOIDX, M(AGBLOCK)|M(AGNUMBER)|M(FSBLOCK)|M(INOOFF), | |
126 | inoidx_names }, | |
127 | { CT_INOOFF, | |
128 | M(AGBLOCK)|M(AGINO)|M(AGNUMBER)|M(FSBLOCK)|M(INO)|M(INOIDX), | |
129 | inooff_names }, | |
130 | }; | |
131 | ||
132 | static const cmdinfo_t convert_cmd = | |
133 | { "convert", NULL, convert_f, 3, 9, 0, "type num [type num]... type", | |
134 | "convert from one address form to another", NULL }; | |
135 | ||
136 | static __uint64_t | |
137 | bytevalue(ctype_t ctype, cval_t *val) | |
138 | { | |
139 | switch (ctype) { | |
140 | case CT_AGBLOCK: | |
141 | return agblock_to_bytes(val->agblock); | |
142 | case CT_AGINO: | |
143 | return agino_to_bytes(val->agino); | |
144 | case CT_AGNUMBER: | |
145 | return agnumber_to_bytes(val->agnumber); | |
146 | case CT_BBOFF: | |
147 | return (__uint64_t)val->bboff; | |
148 | case CT_BLKOFF: | |
149 | return (__uint64_t)val->blkoff; | |
150 | case CT_BYTE: | |
151 | return val->byte; | |
152 | case CT_DADDR: | |
153 | return daddr_to_bytes(val->daddr); | |
154 | case CT_FSBLOCK: | |
155 | return fsblock_to_bytes(val->fsblock); | |
156 | case CT_INO: | |
157 | return ino_to_bytes(val->ino); | |
158 | case CT_INOIDX: | |
159 | return inoidx_to_bytes(val->inoidx); | |
160 | case CT_INOOFF: | |
161 | return (__uint64_t)val->inooff; | |
162 | case CT_NONE: | |
163 | case NCTS: | |
164 | } | |
165 | /* NOTREACHED */ | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static int | |
170 | convert_f(int argc, char **argv) | |
171 | { | |
172 | ctype_t c; | |
173 | int conmask; | |
174 | cval_t cvals[NCTS]; | |
175 | int i; | |
176 | int mask; | |
177 | __uint64_t v; | |
178 | ctype_t wtype; | |
179 | ||
180 | /* move past the "convert" command */ | |
181 | argc--; | |
182 | argv++; | |
183 | ||
184 | if ((argc % 2) != 1) { | |
185 | dbprintf("bad argument count %d to convert, expected 3,5,7,9 " | |
186 | "arguments\n", argc); | |
187 | return 0; | |
188 | } | |
189 | if ((wtype = lookupcty(argv[argc - 1])) == CT_NONE) { | |
190 | dbprintf("unknown conversion type %s\n", argv[argc - 1]); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | for (i = mask = conmask = 0; i < (argc - 1) / 2; i++) { | |
195 | c = lookupcty(argv[i * 2]); | |
196 | if (c == CT_NONE) { | |
197 | dbprintf("unknown conversion type %s\n", argv[i * 2]); | |
198 | return 0; | |
199 | } | |
200 | if (c == wtype) { | |
201 | dbprintf("result type same as argument\n"); | |
202 | return 0; | |
203 | } | |
204 | if (conmask & (1 << c)) { | |
205 | dbprintf("conflicting conversion type %s\n", | |
206 | argv[i * 2]); | |
207 | return 0; | |
208 | } | |
209 | if (!getvalue(argv[i * 2 + 1], c, &cvals[c])) | |
210 | return 0; | |
211 | mask |= 1 << c; | |
212 | conmask |= ~ctydescs[c].allowed; | |
213 | } | |
214 | if (cur_agno != NULLAGNUMBER && (conmask & M(AGNUMBER)) == 0) { | |
215 | cvals[CT_AGNUMBER].agnumber = cur_agno; | |
216 | mask |= M(AGNUMBER); | |
217 | conmask |= ~ctydescs[CT_AGNUMBER].allowed; | |
218 | } | |
219 | v = 0; | |
220 | for (c = (ctype_t)0; c < NCTS; c++) { | |
221 | if (!(mask & (1 << c))) | |
222 | continue; | |
223 | v += bytevalue(c, &cvals[c]); | |
224 | } | |
225 | switch (wtype) { | |
226 | case CT_AGBLOCK: | |
227 | v = XFS_DADDR_TO_AGBNO(mp, v >> BBSHIFT); | |
228 | break; | |
229 | case CT_AGINO: | |
230 | v = (v >> mp->m_sb.sb_inodelog) % | |
231 | (mp->m_sb.sb_agblocks << mp->m_sb.sb_inopblog); | |
232 | break; | |
233 | case CT_AGNUMBER: | |
234 | v = XFS_DADDR_TO_AGNO(mp, v >> BBSHIFT); | |
235 | break; | |
236 | case CT_BBOFF: | |
237 | v &= BBMASK; | |
238 | break; | |
239 | case CT_BLKOFF: | |
240 | v &= mp->m_blockmask; | |
241 | break; | |
242 | case CT_BYTE: | |
243 | break; | |
244 | case CT_DADDR: | |
245 | v >>= BBSHIFT; | |
246 | break; | |
247 | case CT_FSBLOCK: | |
248 | v = XFS_DADDR_TO_FSB(mp, v >> BBSHIFT); | |
249 | break; | |
250 | case CT_INO: | |
251 | v = XFS_AGINO_TO_INO(mp, XFS_DADDR_TO_AGNO(mp, v >> BBSHIFT), | |
252 | (v >> mp->m_sb.sb_inodelog) % | |
253 | (mp->m_sb.sb_agblocks << mp->m_sb.sb_inopblog)); | |
254 | break; | |
255 | case CT_INOIDX: | |
256 | v = (v >> mp->m_sb.sb_inodelog) & (mp->m_sb.sb_inopblock - 1); | |
257 | break; | |
258 | case CT_INOOFF: | |
259 | v &= mp->m_sb.sb_inodesize - 1; | |
260 | break; | |
261 | case CT_NONE: | |
262 | case NCTS: | |
263 | /* NOTREACHED */ | |
264 | } | |
265 | dbprintf("0x%llx (%llu)\n", v, v); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | void | |
270 | convert_init(void) | |
271 | { | |
272 | add_command(&convert_cmd); | |
273 | } | |
274 | ||
275 | static int | |
276 | getvalue(char *s, ctype_t ctype, cval_t *val) | |
277 | { | |
278 | char *p; | |
279 | __uint64_t v; | |
280 | ||
281 | v = strtoull(s, &p, 0); | |
282 | if (*p != '\0') { | |
283 | dbprintf("%s is not a number\n", s); | |
284 | return 0; | |
285 | } | |
286 | switch (ctype) { | |
287 | case CT_AGBLOCK: | |
288 | val->agblock = (xfs_agblock_t)v; | |
289 | break; | |
290 | case CT_AGINO: | |
291 | val->agino = (xfs_agino_t)v; | |
292 | break; | |
293 | case CT_AGNUMBER: | |
294 | val->agnumber = (xfs_agnumber_t)v; | |
295 | break; | |
296 | case CT_BBOFF: | |
297 | val->bboff = (int)v; | |
298 | break; | |
299 | case CT_BLKOFF: | |
300 | val->blkoff = (int)v; | |
301 | break; | |
302 | case CT_BYTE: | |
303 | val->byte = (__uint64_t)v; | |
304 | break; | |
305 | case CT_DADDR: | |
306 | val->daddr = (xfs_daddr_t)v; | |
307 | break; | |
308 | case CT_FSBLOCK: | |
309 | val->fsblock = (xfs_fsblock_t)v; | |
310 | break; | |
311 | case CT_INO: | |
312 | val->ino = (xfs_ino_t)v; | |
313 | break; | |
314 | case CT_INOIDX: | |
315 | val->inoidx = (int)v; | |
316 | break; | |
317 | case CT_INOOFF: | |
318 | val->inooff = (int)v; | |
319 | break; | |
320 | case CT_NONE: | |
321 | case NCTS: | |
322 | /* NOTREACHED */ | |
323 | } | |
324 | return 1; | |
325 | } | |
326 | ||
327 | static ctype_t | |
328 | lookupcty(char *ctyname) | |
329 | { | |
330 | ctype_t cty; | |
331 | const char **name; | |
332 | ||
333 | for (cty = (ctype_t)0; cty < NCTS; cty++) { | |
334 | for (name = ctydescs[cty].names; *name; name++) { | |
335 | if (strcmp(ctyname, *name) == 0) | |
336 | return cty; | |
337 | } | |
338 | } | |
339 | return CT_NONE; | |
340 | } |