Commit | Line | Data |
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47d546f4 NA |
1 | /* CTF file creation. |
2 | Copyright (C) 2019 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of libctf. | |
5 | ||
6 | libctf is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
14 | See the GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; see the file COPYING. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <ctf-impl.h> | |
21 | #include <sys/param.h> | |
22 | #include <assert.h> | |
23 | #include <string.h> | |
24 | #include <zlib.h> | |
25 | ||
a0486bac JM |
26 | #ifndef roundup |
27 | #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) | |
28 | #endif | |
29 | ||
47d546f4 NA |
30 | /* To create an empty CTF container, we just declare a zeroed header and call |
31 | ctf_bufopen() on it. If ctf_bufopen succeeds, we mark the new container r/w | |
f5e9c9bd NA |
32 | and initialize the dynamic members. We start assigning type IDs at 1 because |
33 | type ID 0 is used as a sentinel and a not-found indicator. */ | |
47d546f4 NA |
34 | |
35 | ctf_file_t * | |
36 | ctf_create (int *errp) | |
37 | { | |
38 | static const ctf_header_t hdr = { .cth_preamble = { CTF_MAGIC, CTF_VERSION, 0 } }; | |
39 | ||
40 | ctf_dynhash_t *dthash; | |
41 | ctf_dynhash_t *dvhash; | |
42 | ctf_dynhash_t *dtbyname; | |
43 | ctf_sect_t cts; | |
44 | ctf_file_t *fp; | |
45 | ||
46 | libctf_init_debug(); | |
47 | dthash = ctf_dynhash_create (ctf_hash_integer, ctf_hash_eq_integer, | |
48 | NULL, NULL); | |
49 | if (dthash == NULL) | |
50 | { | |
51 | ctf_set_open_errno (errp, EAGAIN); | |
52 | goto err; | |
53 | } | |
54 | ||
55 | dvhash = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
56 | NULL, NULL); | |
57 | if (dvhash == NULL) | |
58 | { | |
59 | ctf_set_open_errno (errp, EAGAIN); | |
60 | goto err_dt; | |
61 | } | |
62 | ||
63 | dtbyname = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
64 | free, NULL); | |
65 | if (dtbyname == NULL) | |
66 | { | |
67 | ctf_set_open_errno (errp, EAGAIN); | |
68 | goto err_dv; | |
69 | } | |
70 | ||
71 | cts.cts_name = _CTF_SECTION; | |
47d546f4 NA |
72 | cts.cts_data = &hdr; |
73 | cts.cts_size = sizeof (hdr); | |
74 | cts.cts_entsize = 1; | |
47d546f4 NA |
75 | |
76 | if ((fp = ctf_bufopen (&cts, NULL, NULL, errp)) == NULL) | |
77 | goto err_dtbyname; | |
78 | ||
79 | fp->ctf_flags |= LCTF_RDWR; | |
80 | fp->ctf_dtbyname = dtbyname; | |
81 | fp->ctf_dthash = dthash; | |
82 | fp->ctf_dvhash = dvhash; | |
47d546f4 NA |
83 | fp->ctf_dtnextid = 1; |
84 | fp->ctf_dtoldid = 0; | |
f57cf0e3 | 85 | fp->ctf_snapshots = 1; |
47d546f4 NA |
86 | fp->ctf_snapshot_lu = 0; |
87 | ||
88 | return fp; | |
89 | ||
90 | err_dtbyname: | |
91 | ctf_dynhash_destroy (dtbyname); | |
92 | err_dv: | |
93 | ctf_dynhash_destroy (dvhash); | |
94 | err_dt: | |
95 | ctf_dynhash_destroy (dthash); | |
96 | err: | |
97 | return NULL; | |
98 | } | |
99 | ||
100 | static unsigned char * | |
f5e9c9bd | 101 | ctf_copy_smembers (ctf_file_t *fp, ctf_dtdef_t *dtd, unsigned char *t) |
47d546f4 NA |
102 | { |
103 | ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
104 | ctf_member_t ctm; | |
105 | ||
106 | for (; dmd != NULL; dmd = ctf_list_next (dmd)) | |
107 | { | |
f5e9c9bd | 108 | ctf_member_t *copied; |
47d546f4 | 109 | |
f5e9c9bd | 110 | ctm.ctm_name = 0; |
47d546f4 NA |
111 | ctm.ctm_type = (uint32_t) dmd->dmd_type; |
112 | ctm.ctm_offset = (uint32_t) dmd->dmd_offset; | |
113 | ||
114 | memcpy (t, &ctm, sizeof (ctm)); | |
f5e9c9bd NA |
115 | copied = (ctf_member_t *) t; |
116 | if (dmd->dmd_name) | |
117 | ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctm_name); | |
118 | ||
47d546f4 NA |
119 | t += sizeof (ctm); |
120 | } | |
121 | ||
122 | return t; | |
123 | } | |
124 | ||
125 | static unsigned char * | |
f5e9c9bd | 126 | ctf_copy_lmembers (ctf_file_t *fp, ctf_dtdef_t *dtd, unsigned char *t) |
47d546f4 NA |
127 | { |
128 | ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
129 | ctf_lmember_t ctlm; | |
130 | ||
131 | for (; dmd != NULL; dmd = ctf_list_next (dmd)) | |
132 | { | |
f5e9c9bd | 133 | ctf_lmember_t *copied; |
47d546f4 | 134 | |
f5e9c9bd | 135 | ctlm.ctlm_name = 0; |
47d546f4 NA |
136 | ctlm.ctlm_type = (uint32_t) dmd->dmd_type; |
137 | ctlm.ctlm_offsethi = CTF_OFFSET_TO_LMEMHI (dmd->dmd_offset); | |
138 | ctlm.ctlm_offsetlo = CTF_OFFSET_TO_LMEMLO (dmd->dmd_offset); | |
139 | ||
140 | memcpy (t, &ctlm, sizeof (ctlm)); | |
f5e9c9bd NA |
141 | copied = (ctf_lmember_t *) t; |
142 | if (dmd->dmd_name) | |
143 | ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctlm_name); | |
144 | ||
47d546f4 NA |
145 | t += sizeof (ctlm); |
146 | } | |
147 | ||
148 | return t; | |
149 | } | |
150 | ||
151 | static unsigned char * | |
f5e9c9bd | 152 | ctf_copy_emembers (ctf_file_t *fp, ctf_dtdef_t *dtd, unsigned char *t) |
47d546f4 NA |
153 | { |
154 | ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
155 | ctf_enum_t cte; | |
156 | ||
157 | for (; dmd != NULL; dmd = ctf_list_next (dmd)) | |
158 | { | |
f5e9c9bd NA |
159 | ctf_enum_t *copied; |
160 | ||
47d546f4 | 161 | cte.cte_value = dmd->dmd_value; |
47d546f4 | 162 | memcpy (t, &cte, sizeof (cte)); |
f5e9c9bd NA |
163 | copied = (ctf_enum_t *) t; |
164 | ctf_str_add_ref (fp, dmd->dmd_name, &copied->cte_name); | |
47d546f4 NA |
165 | t += sizeof (cte); |
166 | } | |
167 | ||
168 | return t; | |
169 | } | |
170 | ||
47d546f4 NA |
171 | /* Sort a newly-constructed static variable array. */ |
172 | ||
d851ecd3 NA |
173 | typedef struct ctf_sort_var_arg_cb |
174 | { | |
175 | ctf_file_t *fp; | |
176 | ctf_strs_t *strtab; | |
177 | } ctf_sort_var_arg_cb_t; | |
178 | ||
47d546f4 | 179 | static int |
d851ecd3 | 180 | ctf_sort_var (const void *one_, const void *two_, void *arg_) |
47d546f4 NA |
181 | { |
182 | const ctf_varent_t *one = one_; | |
183 | const ctf_varent_t *two = two_; | |
d851ecd3 | 184 | ctf_sort_var_arg_cb_t *arg = arg_; |
47d546f4 | 185 | |
d851ecd3 NA |
186 | return (strcmp (ctf_strraw_explicit (arg->fp, one->ctv_name, arg->strtab), |
187 | ctf_strraw_explicit (arg->fp, two->ctv_name, arg->strtab))); | |
47d546f4 NA |
188 | } |
189 | ||
190 | /* If the specified CTF container is writable and has been modified, reload this | |
191 | container with the updated type definitions. In order to make this code and | |
192 | the rest of libctf as simple as possible, we perform updates by taking the | |
193 | dynamic type definitions and creating an in-memory CTF file containing the | |
d851ecd3 NA |
194 | definitions, and then call ctf_simple_open_internal() on it. This not only |
195 | leverages ctf_simple_open(), but also avoids having to bifurcate the rest of | |
196 | the library code with different lookup paths for static and dynamic type | |
197 | definitions. We are therefore optimizing greatly for lookup over update, | |
198 | which we assume will be an uncommon operation. We perform one extra trick | |
199 | here for the benefit of callers and to keep our code simple: | |
200 | ctf_simple_open_internal() will return a new ctf_file_t, but we want to keep | |
201 | the fp constant for the caller, so after ctf_simple_open_internal() returns, | |
202 | we use memcpy to swap the interior of the old and new ctf_file_t's, and then | |
203 | free the old. */ | |
47d546f4 NA |
204 | int |
205 | ctf_update (ctf_file_t *fp) | |
206 | { | |
207 | ctf_file_t ofp, *nfp; | |
f5e9c9bd | 208 | ctf_header_t hdr, *hdrp; |
47d546f4 NA |
209 | ctf_dtdef_t *dtd; |
210 | ctf_dvdef_t *dvd; | |
211 | ctf_varent_t *dvarents; | |
f5e9c9bd | 212 | ctf_strs_writable_t strtab; |
47d546f4 | 213 | |
f5e9c9bd | 214 | unsigned char *t; |
47d546f4 NA |
215 | unsigned long i; |
216 | size_t buf_size, type_size, nvars; | |
f5e9c9bd | 217 | unsigned char *buf, *newbuf; |
47d546f4 NA |
218 | int err; |
219 | ||
220 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
221 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
222 | ||
223 | /* Update required? */ | |
224 | if (!(fp->ctf_flags & LCTF_DIRTY)) | |
225 | return 0; | |
226 | ||
227 | /* Fill in an initial CTF header. We will leave the label, object, | |
228 | and function sections empty and only output a header, type section, | |
229 | and string table. The type section begins at a 4-byte aligned | |
230 | boundary past the CTF header itself (at relative offset zero). */ | |
231 | ||
232 | memset (&hdr, 0, sizeof (hdr)); | |
233 | hdr.cth_magic = CTF_MAGIC; | |
234 | hdr.cth_version = CTF_VERSION; | |
235 | ||
47d546f4 NA |
236 | /* Iterate through the dynamic type definition list and compute the |
237 | size of the CTF type section we will need to generate. */ | |
238 | ||
239 | for (type_size = 0, dtd = ctf_list_next (&fp->ctf_dtdefs); | |
240 | dtd != NULL; dtd = ctf_list_next (dtd)) | |
241 | { | |
242 | uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
243 | uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
244 | ||
245 | if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT) | |
246 | type_size += sizeof (ctf_stype_t); | |
247 | else | |
248 | type_size += sizeof (ctf_type_t); | |
249 | ||
250 | switch (kind) | |
251 | { | |
252 | case CTF_K_INTEGER: | |
253 | case CTF_K_FLOAT: | |
254 | type_size += sizeof (uint32_t); | |
255 | break; | |
256 | case CTF_K_ARRAY: | |
257 | type_size += sizeof (ctf_array_t); | |
258 | break; | |
259 | case CTF_K_SLICE: | |
260 | type_size += sizeof (ctf_slice_t); | |
261 | break; | |
262 | case CTF_K_FUNCTION: | |
263 | type_size += sizeof (uint32_t) * (vlen + (vlen & 1)); | |
264 | break; | |
265 | case CTF_K_STRUCT: | |
266 | case CTF_K_UNION: | |
267 | if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH) | |
268 | type_size += sizeof (ctf_member_t) * vlen; | |
269 | else | |
270 | type_size += sizeof (ctf_lmember_t) * vlen; | |
271 | break; | |
272 | case CTF_K_ENUM: | |
273 | type_size += sizeof (ctf_enum_t) * vlen; | |
274 | break; | |
275 | } | |
276 | } | |
277 | ||
278 | /* Computing the number of entries in the CTF variable section is much | |
279 | simpler. */ | |
280 | ||
281 | for (nvars = 0, dvd = ctf_list_next (&fp->ctf_dvdefs); | |
282 | dvd != NULL; dvd = ctf_list_next (dvd), nvars++); | |
283 | ||
f5e9c9bd NA |
284 | /* Compute the size of the CTF buffer we need, sans only the string table, |
285 | then allocate a new buffer and memcpy the finished header to the start of | |
286 | the buffer. (We will adjust this later with strtab length info.) */ | |
47d546f4 NA |
287 | |
288 | hdr.cth_typeoff = hdr.cth_varoff + (nvars * sizeof (ctf_varent_t)); | |
289 | hdr.cth_stroff = hdr.cth_typeoff + type_size; | |
f5e9c9bd | 290 | hdr.cth_strlen = 0; |
47d546f4 NA |
291 | |
292 | buf_size = sizeof (ctf_header_t) + hdr.cth_stroff + hdr.cth_strlen; | |
293 | ||
65365aa8 | 294 | if ((buf = malloc (buf_size)) == NULL) |
47d546f4 NA |
295 | return (ctf_set_errno (fp, EAGAIN)); |
296 | ||
297 | memcpy (buf, &hdr, sizeof (ctf_header_t)); | |
298 | t = (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_varoff; | |
47d546f4 | 299 | |
f5e9c9bd NA |
300 | hdrp = (ctf_header_t *) buf; |
301 | if ((fp->ctf_flags & LCTF_CHILD) && (fp->ctf_parname != NULL)) | |
302 | ctf_str_add_ref (fp, fp->ctf_parname, &hdrp->cth_parname); | |
fd55eae8 NA |
303 | if (fp->ctf_cuname != NULL) |
304 | ctf_str_add_ref (fp, fp->ctf_cuname, &hdrp->cth_cuname); | |
47d546f4 | 305 | |
f5e9c9bd NA |
306 | /* Work over the variable list, translating everything into ctf_varent_t's and |
307 | prepping the string table. */ | |
47d546f4 NA |
308 | |
309 | dvarents = (ctf_varent_t *) t; | |
310 | for (i = 0, dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; | |
311 | dvd = ctf_list_next (dvd), i++) | |
312 | { | |
313 | ctf_varent_t *var = &dvarents[i]; | |
47d546f4 | 314 | |
f5e9c9bd | 315 | ctf_str_add_ref (fp, dvd->dvd_name, &var->ctv_name); |
47d546f4 | 316 | var->ctv_type = dvd->dvd_type; |
47d546f4 NA |
317 | } |
318 | assert (i == nvars); | |
319 | ||
47d546f4 NA |
320 | t += sizeof (ctf_varent_t) * nvars; |
321 | ||
322 | assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_typeoff); | |
323 | ||
f5e9c9bd NA |
324 | /* We now take a final lap through the dynamic type definition list and copy |
325 | the appropriate type records to the output buffer, noting down the | |
326 | strings as we go. */ | |
47d546f4 NA |
327 | |
328 | for (dtd = ctf_list_next (&fp->ctf_dtdefs); | |
329 | dtd != NULL; dtd = ctf_list_next (dtd)) | |
330 | { | |
47d546f4 NA |
331 | uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); |
332 | uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
333 | ||
334 | ctf_array_t cta; | |
335 | uint32_t encoding; | |
336 | size_t len; | |
f5e9c9bd | 337 | ctf_stype_t *copied; |
47d546f4 | 338 | |
f5e9c9bd | 339 | dtd->dtd_data.ctt_name = 0; |
47d546f4 NA |
340 | |
341 | if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT) | |
342 | len = sizeof (ctf_stype_t); | |
343 | else | |
344 | len = sizeof (ctf_type_t); | |
345 | ||
346 | memcpy (t, &dtd->dtd_data, len); | |
f5e9c9bd NA |
347 | copied = (ctf_stype_t *) t; /* name is at the start: constant offset. */ |
348 | if (dtd->dtd_name) | |
349 | ctf_str_add_ref (fp, dtd->dtd_name, &copied->ctt_name); | |
47d546f4 NA |
350 | t += len; |
351 | ||
352 | switch (kind) | |
353 | { | |
354 | case CTF_K_INTEGER: | |
355 | case CTF_K_FLOAT: | |
356 | if (kind == CTF_K_INTEGER) | |
357 | { | |
358 | encoding = CTF_INT_DATA (dtd->dtd_u.dtu_enc.cte_format, | |
359 | dtd->dtd_u.dtu_enc.cte_offset, | |
360 | dtd->dtd_u.dtu_enc.cte_bits); | |
361 | } | |
362 | else | |
363 | { | |
364 | encoding = CTF_FP_DATA (dtd->dtd_u.dtu_enc.cte_format, | |
365 | dtd->dtd_u.dtu_enc.cte_offset, | |
366 | dtd->dtd_u.dtu_enc.cte_bits); | |
367 | } | |
368 | memcpy (t, &encoding, sizeof (encoding)); | |
369 | t += sizeof (encoding); | |
370 | break; | |
371 | ||
372 | case CTF_K_SLICE: | |
373 | memcpy (t, &dtd->dtd_u.dtu_slice, sizeof (struct ctf_slice)); | |
374 | t += sizeof (struct ctf_slice); | |
375 | break; | |
376 | ||
377 | case CTF_K_ARRAY: | |
378 | cta.cta_contents = (uint32_t) dtd->dtd_u.dtu_arr.ctr_contents; | |
379 | cta.cta_index = (uint32_t) dtd->dtd_u.dtu_arr.ctr_index; | |
380 | cta.cta_nelems = dtd->dtd_u.dtu_arr.ctr_nelems; | |
381 | memcpy (t, &cta, sizeof (cta)); | |
382 | t += sizeof (cta); | |
383 | break; | |
384 | ||
385 | case CTF_K_FUNCTION: | |
386 | { | |
387 | uint32_t *argv = (uint32_t *) (uintptr_t) t; | |
388 | uint32_t argc; | |
389 | ||
390 | for (argc = 0; argc < vlen; argc++) | |
391 | *argv++ = (uint32_t) dtd->dtd_u.dtu_argv[argc]; | |
392 | ||
393 | if (vlen & 1) | |
394 | *argv++ = 0; /* Pad to 4-byte boundary. */ | |
395 | ||
396 | t = (unsigned char *) argv; | |
397 | break; | |
398 | } | |
399 | ||
400 | case CTF_K_STRUCT: | |
401 | case CTF_K_UNION: | |
402 | if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH) | |
f5e9c9bd | 403 | t = ctf_copy_smembers (fp, dtd, t); |
47d546f4 | 404 | else |
f5e9c9bd | 405 | t = ctf_copy_lmembers (fp, dtd, t); |
47d546f4 NA |
406 | break; |
407 | ||
408 | case CTF_K_ENUM: | |
f5e9c9bd | 409 | t = ctf_copy_emembers (fp, dtd, t); |
47d546f4 NA |
410 | break; |
411 | } | |
412 | } | |
413 | assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_stroff); | |
414 | ||
f5e9c9bd NA |
415 | /* Construct the final string table and fill out all the string refs with the |
416 | final offsets. Then purge the refs list, because we're about to move this | |
417 | strtab onto the end of the buf, invalidating all the offsets. */ | |
418 | strtab = ctf_str_write_strtab (fp); | |
419 | ctf_str_purge_refs (fp); | |
420 | ||
d851ecd3 NA |
421 | if (strtab.cts_strs == NULL) |
422 | { | |
423 | ctf_free (buf); | |
424 | return (ctf_set_errno (fp, EAGAIN)); | |
425 | } | |
426 | ||
f5e9c9bd NA |
427 | /* Now the string table is constructed, we can sort the buffer of |
428 | ctf_varent_t's. */ | |
d851ecd3 | 429 | ctf_sort_var_arg_cb_t sort_var_arg = { fp, (ctf_strs_t *) &strtab }; |
f5e9c9bd | 430 | ctf_qsort_r (dvarents, nvars, sizeof (ctf_varent_t), ctf_sort_var, |
d851ecd3 | 431 | &sort_var_arg); |
f5e9c9bd NA |
432 | |
433 | if ((newbuf = ctf_realloc (fp, buf, buf_size + strtab.cts_len)) == NULL) | |
434 | { | |
435 | ctf_free (buf); | |
436 | ctf_free (strtab.cts_strs); | |
437 | return (ctf_set_errno (fp, EAGAIN)); | |
438 | } | |
439 | buf = newbuf; | |
440 | memcpy (buf + buf_size, strtab.cts_strs, strtab.cts_len); | |
441 | hdrp = (ctf_header_t *) buf; | |
442 | hdrp->cth_strlen = strtab.cts_len; | |
443 | buf_size += hdrp->cth_strlen; | |
444 | ctf_free (strtab.cts_strs); | |
445 | ||
47d546f4 NA |
446 | /* Finally, we are ready to ctf_simple_open() the new container. If this |
447 | is successful, we then switch nfp and fp and free the old container. */ | |
448 | ||
d851ecd3 NA |
449 | if ((nfp = ctf_simple_open_internal ((char *) buf, buf_size, NULL, 0, |
450 | 0, NULL, 0, fp->ctf_syn_ext_strtab, | |
451 | &err)) == NULL) | |
47d546f4 | 452 | { |
65365aa8 | 453 | ctf_free (buf); |
47d546f4 NA |
454 | return (ctf_set_errno (fp, err)); |
455 | } | |
456 | ||
457 | (void) ctf_setmodel (nfp, ctf_getmodel (fp)); | |
458 | (void) ctf_import (nfp, fp->ctf_parent); | |
459 | ||
460 | nfp->ctf_refcnt = fp->ctf_refcnt; | |
461 | nfp->ctf_flags |= fp->ctf_flags & ~LCTF_DIRTY; | |
fd55eae8 NA |
462 | if (nfp->ctf_dynbase == NULL) |
463 | nfp->ctf_dynbase = buf; /* Make sure buf is freed on close. */ | |
47d546f4 NA |
464 | nfp->ctf_dthash = fp->ctf_dthash; |
465 | nfp->ctf_dtdefs = fp->ctf_dtdefs; | |
466 | nfp->ctf_dtbyname = fp->ctf_dtbyname; | |
467 | nfp->ctf_dvhash = fp->ctf_dvhash; | |
468 | nfp->ctf_dvdefs = fp->ctf_dvdefs; | |
47d546f4 NA |
469 | nfp->ctf_dtnextid = fp->ctf_dtnextid; |
470 | nfp->ctf_dtoldid = fp->ctf_dtnextid - 1; | |
471 | nfp->ctf_snapshots = fp->ctf_snapshots + 1; | |
472 | nfp->ctf_specific = fp->ctf_specific; | |
d851ecd3 | 473 | nfp->ctf_syn_ext_strtab = fp->ctf_syn_ext_strtab; |
47d546f4 NA |
474 | |
475 | nfp->ctf_snapshot_lu = fp->ctf_snapshots; | |
476 | ||
477 | fp->ctf_dtbyname = NULL; | |
478 | fp->ctf_dthash = NULL; | |
f5e9c9bd NA |
479 | ctf_str_free_atoms (nfp); |
480 | nfp->ctf_str_atoms = fp->ctf_str_atoms; | |
481 | fp->ctf_str_atoms = NULL; | |
47d546f4 | 482 | memset (&fp->ctf_dtdefs, 0, sizeof (ctf_list_t)); |
d851ecd3 | 483 | fp->ctf_syn_ext_strtab = NULL; |
47d546f4 NA |
484 | |
485 | fp->ctf_dvhash = NULL; | |
486 | memset (&fp->ctf_dvdefs, 0, sizeof (ctf_list_t)); | |
487 | ||
488 | memcpy (&ofp, fp, sizeof (ctf_file_t)); | |
489 | memcpy (fp, nfp, sizeof (ctf_file_t)); | |
490 | memcpy (nfp, &ofp, sizeof (ctf_file_t)); | |
491 | ||
492 | /* Initialize the ctf_lookup_by_name top-level dictionary. We keep an | |
493 | array of type name prefixes and the corresponding ctf_dynhash to use. | |
494 | NOTE: This code must be kept in sync with the code in ctf_bufopen(). */ | |
495 | ||
496 | fp->ctf_lookups[0].ctl_hash = fp->ctf_structs; | |
497 | fp->ctf_lookups[1].ctl_hash = fp->ctf_unions; | |
498 | fp->ctf_lookups[2].ctl_hash = fp->ctf_enums; | |
499 | fp->ctf_lookups[3].ctl_hash = fp->ctf_names; | |
500 | ||
501 | nfp->ctf_refcnt = 1; /* Force nfp to be freed. */ | |
502 | ctf_file_close (nfp); | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | static char * | |
508 | ctf_prefixed_name (int kind, const char *name) | |
509 | { | |
510 | char *prefixed; | |
511 | ||
512 | switch (kind) | |
513 | { | |
514 | case CTF_K_STRUCT: | |
515 | prefixed = ctf_strdup ("struct "); | |
516 | break; | |
517 | case CTF_K_UNION: | |
518 | prefixed = ctf_strdup ("union "); | |
519 | break; | |
520 | case CTF_K_ENUM: | |
521 | prefixed = ctf_strdup ("enum "); | |
522 | break; | |
523 | default: | |
524 | prefixed = ctf_strdup (""); | |
525 | } | |
526 | ||
527 | prefixed = ctf_str_append (prefixed, name); | |
528 | return prefixed; | |
529 | } | |
530 | ||
24865428 | 531 | int |
47d546f4 NA |
532 | ctf_dtd_insert (ctf_file_t *fp, ctf_dtdef_t *dtd) |
533 | { | |
24865428 NA |
534 | if (ctf_dynhash_insert (fp->ctf_dthash, (void *) dtd->dtd_type, dtd) < 0) |
535 | return -1; | |
536 | ||
47d546f4 NA |
537 | if (dtd->dtd_name) |
538 | { | |
539 | int kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
24865428 NA |
540 | if (ctf_dynhash_insert (fp->ctf_dtbyname, |
541 | ctf_prefixed_name (kind, dtd->dtd_name), | |
542 | dtd) < 0) | |
543 | return -1; | |
47d546f4 | 544 | } |
24865428 NA |
545 | ctf_list_append (&fp->ctf_dtdefs, dtd); |
546 | return 0; | |
47d546f4 NA |
547 | } |
548 | ||
549 | void | |
550 | ctf_dtd_delete (ctf_file_t *fp, ctf_dtdef_t *dtd) | |
551 | { | |
552 | ctf_dmdef_t *dmd, *nmd; | |
553 | int kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
554 | ||
555 | ctf_dynhash_remove (fp->ctf_dthash, (void *) dtd->dtd_type); | |
556 | ||
557 | switch (kind) | |
558 | { | |
559 | case CTF_K_STRUCT: | |
560 | case CTF_K_UNION: | |
561 | case CTF_K_ENUM: | |
562 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
563 | dmd != NULL; dmd = nmd) | |
564 | { | |
565 | if (dmd->dmd_name != NULL) | |
47d546f4 | 566 | ctf_free (dmd->dmd_name); |
47d546f4 NA |
567 | nmd = ctf_list_next (dmd); |
568 | ctf_free (dmd); | |
569 | } | |
570 | break; | |
571 | case CTF_K_FUNCTION: | |
572 | ctf_free (dtd->dtd_u.dtu_argv); | |
573 | break; | |
574 | } | |
575 | ||
576 | if (dtd->dtd_name) | |
577 | { | |
578 | char *name; | |
579 | ||
580 | name = ctf_prefixed_name (kind, dtd->dtd_name); | |
581 | ctf_dynhash_remove (fp->ctf_dtbyname, name); | |
582 | free (name); | |
47d546f4 NA |
583 | ctf_free (dtd->dtd_name); |
584 | } | |
585 | ||
586 | ctf_list_delete (&fp->ctf_dtdefs, dtd); | |
587 | ctf_free (dtd); | |
588 | } | |
589 | ||
590 | ctf_dtdef_t * | |
591 | ctf_dtd_lookup (const ctf_file_t *fp, ctf_id_t type) | |
592 | { | |
593 | return (ctf_dtdef_t *) ctf_dynhash_lookup (fp->ctf_dthash, (void *) type); | |
594 | } | |
595 | ||
596 | static ctf_id_t | |
597 | ctf_dtd_lookup_type_by_name (ctf_file_t *fp, int kind, const char *name) | |
598 | { | |
599 | ctf_dtdef_t *dtd; | |
600 | char *decorated = ctf_prefixed_name (kind, name); | |
601 | ||
602 | dtd = (ctf_dtdef_t *) ctf_dynhash_lookup (fp->ctf_dtbyname, decorated); | |
603 | free (decorated); | |
604 | ||
605 | if (dtd) | |
606 | return dtd->dtd_type; | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | ctf_dtdef_t * | |
612 | ctf_dynamic_type (const ctf_file_t *fp, ctf_id_t id) | |
613 | { | |
614 | ctf_id_t idx; | |
615 | ||
616 | if ((fp->ctf_flags & LCTF_CHILD) && LCTF_TYPE_ISPARENT (fp, id)) | |
617 | fp = fp->ctf_parent; | |
618 | ||
619 | idx = LCTF_TYPE_TO_INDEX(fp, id); | |
620 | ||
621 | if (((unsigned long) idx > fp->ctf_typemax) && | |
622 | ((unsigned long) idx < fp->ctf_dtnextid)) | |
623 | return ctf_dtd_lookup (fp, id); | |
624 | return NULL; | |
625 | } | |
626 | ||
24865428 | 627 | int |
47d546f4 NA |
628 | ctf_dvd_insert (ctf_file_t *fp, ctf_dvdef_t *dvd) |
629 | { | |
24865428 NA |
630 | if (ctf_dynhash_insert (fp->ctf_dvhash, dvd->dvd_name, dvd) < 0) |
631 | return -1; | |
47d546f4 | 632 | ctf_list_append (&fp->ctf_dvdefs, dvd); |
24865428 | 633 | return 0; |
47d546f4 NA |
634 | } |
635 | ||
636 | void | |
637 | ctf_dvd_delete (ctf_file_t *fp, ctf_dvdef_t *dvd) | |
638 | { | |
639 | ctf_dynhash_remove (fp->ctf_dvhash, dvd->dvd_name); | |
47d546f4 NA |
640 | ctf_free (dvd->dvd_name); |
641 | ||
642 | ctf_list_delete (&fp->ctf_dvdefs, dvd); | |
643 | ctf_free (dvd); | |
644 | } | |
645 | ||
646 | ctf_dvdef_t * | |
647 | ctf_dvd_lookup (const ctf_file_t *fp, const char *name) | |
648 | { | |
649 | return (ctf_dvdef_t *) ctf_dynhash_lookup (fp->ctf_dvhash, name); | |
650 | } | |
651 | ||
652 | /* Discard all of the dynamic type definitions and variable definitions that | |
653 | have been added to the container since the last call to ctf_update(). We | |
654 | locate such types by scanning the dtd list and deleting elements that have | |
655 | type IDs greater than ctf_dtoldid, which is set by ctf_update(), above, and | |
656 | by scanning the variable list and deleting elements that have update IDs | |
657 | equal to the current value of the last-update snapshot count (indicating that | |
658 | they were added after the most recent call to ctf_update()). */ | |
659 | int | |
660 | ctf_discard (ctf_file_t *fp) | |
661 | { | |
662 | ctf_snapshot_id_t last_update = | |
663 | { fp->ctf_dtoldid, | |
664 | fp->ctf_snapshot_lu + 1 }; | |
665 | ||
666 | /* Update required? */ | |
667 | if (!(fp->ctf_flags & LCTF_DIRTY)) | |
668 | return 0; | |
669 | ||
670 | return (ctf_rollback (fp, last_update)); | |
671 | } | |
672 | ||
673 | ctf_snapshot_id_t | |
674 | ctf_snapshot (ctf_file_t *fp) | |
675 | { | |
676 | ctf_snapshot_id_t snapid; | |
677 | snapid.dtd_id = fp->ctf_dtnextid - 1; | |
678 | snapid.snapshot_id = fp->ctf_snapshots++; | |
679 | return snapid; | |
680 | } | |
681 | ||
682 | /* Like ctf_discard(), only discards everything after a particular ID. */ | |
683 | int | |
684 | ctf_rollback (ctf_file_t *fp, ctf_snapshot_id_t id) | |
685 | { | |
686 | ctf_dtdef_t *dtd, *ntd; | |
687 | ctf_dvdef_t *dvd, *nvd; | |
688 | ||
689 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
690 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
691 | ||
692 | if (fp->ctf_dtoldid > id.dtd_id) | |
693 | return (ctf_set_errno (fp, ECTF_OVERROLLBACK)); | |
694 | ||
695 | if (fp->ctf_snapshot_lu >= id.snapshot_id) | |
696 | return (ctf_set_errno (fp, ECTF_OVERROLLBACK)); | |
697 | ||
698 | for (dtd = ctf_list_next (&fp->ctf_dtdefs); dtd != NULL; dtd = ntd) | |
699 | { | |
700 | ntd = ctf_list_next (dtd); | |
701 | ||
702 | if (LCTF_TYPE_TO_INDEX (fp, dtd->dtd_type) <= id.dtd_id) | |
703 | continue; | |
704 | ||
705 | ctf_dtd_delete (fp, dtd); | |
706 | } | |
707 | ||
708 | for (dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; dvd = nvd) | |
709 | { | |
710 | nvd = ctf_list_next (dvd); | |
711 | ||
712 | if (dvd->dvd_snapshots <= id.snapshot_id) | |
713 | continue; | |
714 | ||
715 | ctf_dvd_delete (fp, dvd); | |
716 | } | |
717 | ||
718 | fp->ctf_dtnextid = id.dtd_id + 1; | |
719 | fp->ctf_snapshots = id.snapshot_id; | |
720 | ||
721 | if (fp->ctf_snapshots == fp->ctf_snapshot_lu) | |
722 | fp->ctf_flags &= ~LCTF_DIRTY; | |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
727 | static ctf_id_t | |
728 | ctf_add_generic (ctf_file_t *fp, uint32_t flag, const char *name, | |
729 | ctf_dtdef_t **rp) | |
730 | { | |
731 | ctf_dtdef_t *dtd; | |
732 | ctf_id_t type; | |
733 | char *s = NULL; | |
734 | ||
735 | if (flag != CTF_ADD_NONROOT && flag != CTF_ADD_ROOT) | |
736 | return (ctf_set_errno (fp, EINVAL)); | |
737 | ||
738 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
739 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
740 | ||
741 | if (LCTF_INDEX_TO_TYPE (fp, fp->ctf_dtnextid, 1) > CTF_MAX_TYPE) | |
742 | return (ctf_set_errno (fp, ECTF_FULL)); | |
743 | ||
744 | if (LCTF_INDEX_TO_TYPE (fp, fp->ctf_dtnextid, 1) == CTF_MAX_PTYPE) | |
745 | return (ctf_set_errno (fp, ECTF_FULL)); | |
746 | ||
747 | if ((dtd = ctf_alloc (sizeof (ctf_dtdef_t))) == NULL) | |
748 | return (ctf_set_errno (fp, EAGAIN)); | |
749 | ||
750 | if (name != NULL && (s = ctf_strdup (name)) == NULL) | |
751 | { | |
752 | ctf_free (dtd); | |
753 | return (ctf_set_errno (fp, EAGAIN)); | |
754 | } | |
755 | ||
756 | type = fp->ctf_dtnextid++; | |
757 | type = LCTF_INDEX_TO_TYPE (fp, type, (fp->ctf_flags & LCTF_CHILD)); | |
758 | ||
759 | memset (dtd, 0, sizeof (ctf_dtdef_t)); | |
760 | dtd->dtd_name = s; | |
761 | dtd->dtd_type = type; | |
762 | ||
24865428 NA |
763 | if (ctf_dtd_insert (fp, dtd) < 0) |
764 | { | |
765 | ctf_free (dtd); | |
766 | return CTF_ERR; /* errno is set for us. */ | |
767 | } | |
47d546f4 NA |
768 | fp->ctf_flags |= LCTF_DIRTY; |
769 | ||
770 | *rp = dtd; | |
771 | return type; | |
772 | } | |
773 | ||
774 | /* When encoding integer sizes, we want to convert a byte count in the range | |
775 | 1-8 to the closest power of 2 (e.g. 3->4, 5->8, etc). The clp2() function | |
776 | is a clever implementation from "Hacker's Delight" by Henry Warren, Jr. */ | |
777 | static size_t | |
778 | clp2 (size_t x) | |
779 | { | |
780 | x--; | |
781 | ||
782 | x |= (x >> 1); | |
783 | x |= (x >> 2); | |
784 | x |= (x >> 4); | |
785 | x |= (x >> 8); | |
786 | x |= (x >> 16); | |
787 | ||
788 | return (x + 1); | |
789 | } | |
790 | ||
791 | static ctf_id_t | |
792 | ctf_add_encoded (ctf_file_t *fp, uint32_t flag, | |
793 | const char *name, const ctf_encoding_t *ep, uint32_t kind) | |
794 | { | |
795 | ctf_dtdef_t *dtd; | |
796 | ctf_id_t type; | |
797 | ||
798 | if (ep == NULL) | |
799 | return (ctf_set_errno (fp, EINVAL)); | |
800 | ||
801 | if ((type = ctf_add_generic (fp, flag, name, &dtd)) == CTF_ERR) | |
802 | return CTF_ERR; /* errno is set for us. */ | |
803 | ||
804 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, 0); | |
76fad999 TT |
805 | dtd->dtd_data.ctt_size = clp2 (P2ROUNDUP (ep->cte_bits, CHAR_BIT) |
806 | / CHAR_BIT); | |
47d546f4 NA |
807 | dtd->dtd_u.dtu_enc = *ep; |
808 | ||
809 | return type; | |
810 | } | |
811 | ||
812 | static ctf_id_t | |
813 | ctf_add_reftype (ctf_file_t *fp, uint32_t flag, ctf_id_t ref, uint32_t kind) | |
814 | { | |
815 | ctf_dtdef_t *dtd; | |
816 | ctf_id_t type; | |
817 | ctf_file_t *tmp = fp; | |
818 | ||
a0486bac | 819 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
47d546f4 NA |
820 | return (ctf_set_errno (fp, EINVAL)); |
821 | ||
822 | if (ctf_lookup_by_id (&tmp, ref) == NULL) | |
823 | return CTF_ERR; /* errno is set for us. */ | |
824 | ||
825 | if ((type = ctf_add_generic (fp, flag, NULL, &dtd)) == CTF_ERR) | |
826 | return CTF_ERR; /* errno is set for us. */ | |
827 | ||
828 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, 0); | |
829 | dtd->dtd_data.ctt_type = (uint32_t) ref; | |
830 | ||
831 | return type; | |
832 | } | |
833 | ||
834 | ctf_id_t | |
835 | ctf_add_slice (ctf_file_t *fp, uint32_t flag, ctf_id_t ref, | |
836 | const ctf_encoding_t *ep) | |
837 | { | |
838 | ctf_dtdef_t *dtd; | |
839 | ctf_id_t type; | |
840 | int kind; | |
841 | const ctf_type_t *tp; | |
842 | ctf_file_t *tmp = fp; | |
843 | ||
844 | if (ep == NULL) | |
845 | return (ctf_set_errno (fp, EINVAL)); | |
846 | ||
847 | if ((ep->cte_bits > 255) || (ep->cte_offset > 255)) | |
848 | return (ctf_set_errno (fp, ECTF_SLICEOVERFLOW)); | |
849 | ||
a0486bac | 850 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
47d546f4 NA |
851 | return (ctf_set_errno (fp, EINVAL)); |
852 | ||
853 | if ((tp = ctf_lookup_by_id (&tmp, ref)) == NULL) | |
854 | return CTF_ERR; /* errno is set for us. */ | |
855 | ||
856 | kind = ctf_type_kind_unsliced (tmp, ref); | |
857 | if ((kind != CTF_K_INTEGER) && (kind != CTF_K_FLOAT) && | |
858 | (kind != CTF_K_ENUM)) | |
859 | return (ctf_set_errno (fp, ECTF_NOTINTFP)); | |
860 | ||
861 | if ((type = ctf_add_generic (fp, flag, NULL, &dtd)) == CTF_ERR) | |
862 | return CTF_ERR; /* errno is set for us. */ | |
863 | ||
864 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_SLICE, flag, 0); | |
76fad999 TT |
865 | dtd->dtd_data.ctt_size = clp2 (P2ROUNDUP (ep->cte_bits, CHAR_BIT) |
866 | / CHAR_BIT); | |
47d546f4 NA |
867 | dtd->dtd_u.dtu_slice.cts_type = ref; |
868 | dtd->dtd_u.dtu_slice.cts_bits = ep->cte_bits; | |
869 | dtd->dtd_u.dtu_slice.cts_offset = ep->cte_offset; | |
870 | ||
871 | return type; | |
872 | } | |
873 | ||
874 | ctf_id_t | |
875 | ctf_add_integer (ctf_file_t *fp, uint32_t flag, | |
876 | const char *name, const ctf_encoding_t *ep) | |
877 | { | |
878 | return (ctf_add_encoded (fp, flag, name, ep, CTF_K_INTEGER)); | |
879 | } | |
880 | ||
881 | ctf_id_t | |
882 | ctf_add_float (ctf_file_t *fp, uint32_t flag, | |
883 | const char *name, const ctf_encoding_t *ep) | |
884 | { | |
885 | return (ctf_add_encoded (fp, flag, name, ep, CTF_K_FLOAT)); | |
886 | } | |
887 | ||
888 | ctf_id_t | |
889 | ctf_add_pointer (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
890 | { | |
891 | return (ctf_add_reftype (fp, flag, ref, CTF_K_POINTER)); | |
892 | } | |
893 | ||
894 | ctf_id_t | |
895 | ctf_add_array (ctf_file_t *fp, uint32_t flag, const ctf_arinfo_t *arp) | |
896 | { | |
897 | ctf_dtdef_t *dtd; | |
898 | ctf_id_t type; | |
899 | ctf_file_t *tmp = fp; | |
900 | ||
901 | if (arp == NULL) | |
902 | return (ctf_set_errno (fp, EINVAL)); | |
903 | ||
904 | if (ctf_lookup_by_id (&tmp, arp->ctr_contents) == NULL) | |
905 | return CTF_ERR; /* errno is set for us. */ | |
906 | ||
907 | tmp = fp; | |
908 | if (ctf_lookup_by_id (&tmp, arp->ctr_index) == NULL) | |
909 | return CTF_ERR; /* errno is set for us. */ | |
910 | ||
911 | if ((type = ctf_add_generic (fp, flag, NULL, &dtd)) == CTF_ERR) | |
912 | return CTF_ERR; /* errno is set for us. */ | |
913 | ||
914 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_ARRAY, flag, 0); | |
915 | dtd->dtd_data.ctt_size = 0; | |
916 | dtd->dtd_u.dtu_arr = *arp; | |
917 | ||
918 | return type; | |
919 | } | |
920 | ||
921 | int | |
922 | ctf_set_array (ctf_file_t *fp, ctf_id_t type, const ctf_arinfo_t *arp) | |
923 | { | |
924 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, type); | |
925 | ||
926 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
927 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
928 | ||
929 | if (dtd == NULL | |
930 | || LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info) != CTF_K_ARRAY) | |
931 | return (ctf_set_errno (fp, ECTF_BADID)); | |
932 | ||
933 | fp->ctf_flags |= LCTF_DIRTY; | |
934 | dtd->dtd_u.dtu_arr = *arp; | |
935 | ||
936 | return 0; | |
937 | } | |
938 | ||
939 | ctf_id_t | |
940 | ctf_add_function (ctf_file_t *fp, uint32_t flag, | |
941 | const ctf_funcinfo_t *ctc, const ctf_id_t *argv) | |
942 | { | |
943 | ctf_dtdef_t *dtd; | |
944 | ctf_id_t type; | |
945 | uint32_t vlen; | |
946 | ctf_id_t *vdat = NULL; | |
947 | ctf_file_t *tmp = fp; | |
948 | size_t i; | |
949 | ||
950 | if (ctc == NULL || (ctc->ctc_flags & ~CTF_FUNC_VARARG) != 0 | |
951 | || (ctc->ctc_argc != 0 && argv == NULL)) | |
952 | return (ctf_set_errno (fp, EINVAL)); | |
953 | ||
954 | vlen = ctc->ctc_argc; | |
955 | if (ctc->ctc_flags & CTF_FUNC_VARARG) | |
956 | vlen++; /* Add trailing zero to indicate varargs (see below). */ | |
957 | ||
958 | if (ctf_lookup_by_id (&tmp, ctc->ctc_return) == NULL) | |
959 | return CTF_ERR; /* errno is set for us. */ | |
960 | ||
961 | for (i = 0; i < ctc->ctc_argc; i++) | |
962 | { | |
963 | tmp = fp; | |
964 | if (ctf_lookup_by_id (&tmp, argv[i]) == NULL) | |
965 | return CTF_ERR; /* errno is set for us. */ | |
966 | } | |
967 | ||
968 | if (vlen > CTF_MAX_VLEN) | |
969 | return (ctf_set_errno (fp, EOVERFLOW)); | |
970 | ||
971 | if (vlen != 0 && (vdat = ctf_alloc (sizeof (ctf_id_t) * vlen)) == NULL) | |
972 | return (ctf_set_errno (fp, EAGAIN)); | |
973 | ||
974 | if ((type = ctf_add_generic (fp, flag, NULL, &dtd)) == CTF_ERR) | |
975 | { | |
976 | ctf_free (vdat); | |
977 | return CTF_ERR; /* errno is set for us. */ | |
978 | } | |
979 | ||
980 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_FUNCTION, flag, vlen); | |
981 | dtd->dtd_data.ctt_type = (uint32_t) ctc->ctc_return; | |
982 | ||
983 | memcpy (vdat, argv, sizeof (ctf_id_t) * ctc->ctc_argc); | |
984 | if (ctc->ctc_flags & CTF_FUNC_VARARG) | |
985 | vdat[vlen - 1] = 0; /* Add trailing zero to indicate varargs. */ | |
986 | dtd->dtd_u.dtu_argv = vdat; | |
987 | ||
988 | return type; | |
989 | } | |
990 | ||
991 | ctf_id_t | |
992 | ctf_add_struct_sized (ctf_file_t *fp, uint32_t flag, const char *name, | |
993 | size_t size) | |
994 | { | |
995 | ctf_hash_t *hp = fp->ctf_structs; | |
996 | ctf_dtdef_t *dtd; | |
997 | ctf_id_t type = 0; | |
998 | ||
999 | /* Promote forwards to structs. */ | |
1000 | ||
1001 | if (name != NULL) | |
1002 | { | |
1003 | type = ctf_hash_lookup_type (hp, fp, name); | |
1004 | if (type == 0) | |
1005 | type = ctf_dtd_lookup_type_by_name (fp, CTF_K_STRUCT, name); | |
1006 | } | |
1007 | ||
1008 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
1009 | dtd = ctf_dtd_lookup (fp, type); | |
1010 | else if ((type = ctf_add_generic (fp, flag, name, &dtd)) == CTF_ERR) | |
1011 | return CTF_ERR; /* errno is set for us. */ | |
1012 | ||
1013 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_STRUCT, flag, 0); | |
1014 | ||
1015 | if (size > CTF_MAX_SIZE) | |
1016 | { | |
1017 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1018 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
1019 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
1020 | } | |
1021 | else | |
1022 | dtd->dtd_data.ctt_size = (uint32_t) size; | |
1023 | ||
1024 | return type; | |
1025 | } | |
1026 | ||
1027 | ctf_id_t | |
1028 | ctf_add_struct (ctf_file_t *fp, uint32_t flag, const char *name) | |
1029 | { | |
1030 | return (ctf_add_struct_sized (fp, flag, name, 0)); | |
1031 | } | |
1032 | ||
1033 | ctf_id_t | |
1034 | ctf_add_union_sized (ctf_file_t *fp, uint32_t flag, const char *name, | |
1035 | size_t size) | |
1036 | { | |
1037 | ctf_hash_t *hp = fp->ctf_unions; | |
1038 | ctf_dtdef_t *dtd; | |
1039 | ctf_id_t type = 0; | |
1040 | ||
1041 | /* Promote forwards to unions. */ | |
1042 | if (name != NULL) | |
1043 | { | |
1044 | type = ctf_hash_lookup_type (hp, fp, name); | |
1045 | if (type == 0) | |
1046 | type = ctf_dtd_lookup_type_by_name (fp, CTF_K_UNION, name); | |
1047 | } | |
1048 | ||
1049 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
1050 | dtd = ctf_dtd_lookup (fp, type); | |
1051 | else if ((type = ctf_add_generic (fp, flag, name, &dtd)) == CTF_ERR) | |
1052 | return CTF_ERR; /* errno is set for us */ | |
1053 | ||
1054 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_UNION, flag, 0); | |
1055 | ||
1056 | if (size > CTF_MAX_SIZE) | |
1057 | { | |
1058 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1059 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
1060 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
1061 | } | |
1062 | else | |
1063 | dtd->dtd_data.ctt_size = (uint32_t) size; | |
1064 | ||
1065 | return type; | |
1066 | } | |
1067 | ||
1068 | ctf_id_t | |
1069 | ctf_add_union (ctf_file_t *fp, uint32_t flag, const char *name) | |
1070 | { | |
1071 | return (ctf_add_union_sized (fp, flag, name, 0)); | |
1072 | } | |
1073 | ||
1074 | ctf_id_t | |
1075 | ctf_add_enum (ctf_file_t *fp, uint32_t flag, const char *name) | |
1076 | { | |
1077 | ctf_hash_t *hp = fp->ctf_enums; | |
1078 | ctf_dtdef_t *dtd; | |
1079 | ctf_id_t type = 0; | |
1080 | ||
1081 | /* Promote forwards to enums. */ | |
1082 | if (name != NULL) | |
1083 | { | |
1084 | type = ctf_hash_lookup_type (hp, fp, name); | |
1085 | if (type == 0) | |
1086 | type = ctf_dtd_lookup_type_by_name (fp, CTF_K_ENUM, name); | |
1087 | } | |
1088 | ||
1089 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
1090 | dtd = ctf_dtd_lookup (fp, type); | |
1091 | else if ((type = ctf_add_generic (fp, flag, name, &dtd)) == CTF_ERR) | |
1092 | return CTF_ERR; /* errno is set for us. */ | |
1093 | ||
1094 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_ENUM, flag, 0); | |
1095 | dtd->dtd_data.ctt_size = fp->ctf_dmodel->ctd_int; | |
1096 | ||
1097 | return type; | |
1098 | } | |
1099 | ||
1100 | ctf_id_t | |
1101 | ctf_add_enum_encoded (ctf_file_t *fp, uint32_t flag, const char *name, | |
1102 | const ctf_encoding_t *ep) | |
1103 | { | |
1104 | ctf_hash_t *hp = fp->ctf_enums; | |
1105 | ctf_id_t type = 0; | |
1106 | ||
1107 | /* First, create the enum if need be, using most of the same machinery as | |
1108 | ctf_add_enum(), to ensure that we do not allow things past that are not | |
1109 | enums or forwards to them. (This includes other slices: you cannot slice a | |
1110 | slice, which would be a useless thing to do anyway.) */ | |
1111 | ||
1112 | if (name != NULL) | |
1113 | { | |
1114 | type = ctf_hash_lookup_type (hp, fp, name); | |
1115 | if (type == 0) | |
1116 | type = ctf_dtd_lookup_type_by_name (fp, CTF_K_ENUM, name); | |
1117 | } | |
1118 | ||
1119 | if (type != 0) | |
1120 | { | |
1121 | if ((ctf_type_kind (fp, type) != CTF_K_FORWARD) && | |
1122 | (ctf_type_kind_unsliced (fp, type) != CTF_K_ENUM)) | |
1123 | return (ctf_set_errno (fp, ECTF_NOTINTFP)); | |
1124 | } | |
1125 | else if ((type = ctf_add_enum (fp, flag, name)) == CTF_ERR) | |
1126 | return CTF_ERR; /* errno is set for us. */ | |
1127 | ||
1128 | /* Now attach a suitable slice to it. */ | |
1129 | ||
1130 | return ctf_add_slice (fp, flag, type, ep); | |
1131 | } | |
1132 | ||
1133 | ctf_id_t | |
1134 | ctf_add_forward (ctf_file_t *fp, uint32_t flag, const char *name, | |
1135 | uint32_t kind) | |
1136 | { | |
1137 | ctf_hash_t *hp; | |
1138 | ctf_dtdef_t *dtd; | |
1139 | ctf_id_t type = 0; | |
1140 | ||
1141 | switch (kind) | |
1142 | { | |
1143 | case CTF_K_STRUCT: | |
1144 | hp = fp->ctf_structs; | |
1145 | break; | |
1146 | case CTF_K_UNION: | |
1147 | hp = fp->ctf_unions; | |
1148 | break; | |
1149 | case CTF_K_ENUM: | |
1150 | hp = fp->ctf_enums; | |
1151 | break; | |
1152 | default: | |
1153 | return (ctf_set_errno (fp, ECTF_NOTSUE)); | |
1154 | } | |
1155 | ||
1156 | /* If the type is already defined or exists as a forward tag, just | |
1157 | return the ctf_id_t of the existing definition. */ | |
1158 | ||
1159 | if (name != NULL) | |
1160 | { | |
1161 | if (((type = ctf_hash_lookup_type (hp, fp, name)) != 0) | |
1162 | || (type = ctf_dtd_lookup_type_by_name (fp, kind, name)) != 0) | |
1163 | return type; | |
1164 | } | |
1165 | ||
1166 | if ((type = ctf_add_generic (fp, flag, name, &dtd)) == CTF_ERR) | |
1167 | return CTF_ERR; /* errno is set for us. */ | |
1168 | ||
1169 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_FORWARD, flag, 0); | |
1170 | dtd->dtd_data.ctt_type = kind; | |
1171 | ||
1172 | return type; | |
1173 | } | |
1174 | ||
1175 | ctf_id_t | |
1176 | ctf_add_typedef (ctf_file_t *fp, uint32_t flag, const char *name, | |
1177 | ctf_id_t ref) | |
1178 | { | |
1179 | ctf_dtdef_t *dtd; | |
1180 | ctf_id_t type; | |
1181 | ctf_file_t *tmp = fp; | |
1182 | ||
a0486bac | 1183 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
47d546f4 NA |
1184 | return (ctf_set_errno (fp, EINVAL)); |
1185 | ||
1186 | if (ctf_lookup_by_id (&tmp, ref) == NULL) | |
1187 | return CTF_ERR; /* errno is set for us. */ | |
1188 | ||
1189 | if ((type = ctf_add_generic (fp, flag, name, &dtd)) == CTF_ERR) | |
1190 | return CTF_ERR; /* errno is set for us. */ | |
1191 | ||
1192 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_TYPEDEF, flag, 0); | |
1193 | dtd->dtd_data.ctt_type = (uint32_t) ref; | |
1194 | ||
1195 | return type; | |
1196 | } | |
1197 | ||
1198 | ctf_id_t | |
1199 | ctf_add_volatile (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
1200 | { | |
1201 | return (ctf_add_reftype (fp, flag, ref, CTF_K_VOLATILE)); | |
1202 | } | |
1203 | ||
1204 | ctf_id_t | |
1205 | ctf_add_const (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
1206 | { | |
1207 | return (ctf_add_reftype (fp, flag, ref, CTF_K_CONST)); | |
1208 | } | |
1209 | ||
1210 | ctf_id_t | |
1211 | ctf_add_restrict (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
1212 | { | |
1213 | return (ctf_add_reftype (fp, flag, ref, CTF_K_RESTRICT)); | |
1214 | } | |
1215 | ||
1216 | int | |
1217 | ctf_add_enumerator (ctf_file_t *fp, ctf_id_t enid, const char *name, | |
1218 | int value) | |
1219 | { | |
1220 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, enid); | |
1221 | ctf_dmdef_t *dmd; | |
1222 | ||
1223 | uint32_t kind, vlen, root; | |
1224 | char *s; | |
1225 | ||
1226 | if (name == NULL) | |
1227 | return (ctf_set_errno (fp, EINVAL)); | |
1228 | ||
1229 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1230 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1231 | ||
1232 | if (dtd == NULL) | |
1233 | return (ctf_set_errno (fp, ECTF_BADID)); | |
1234 | ||
1235 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
1236 | root = LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info); | |
1237 | vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
1238 | ||
1239 | if (kind != CTF_K_ENUM) | |
1240 | return (ctf_set_errno (fp, ECTF_NOTENUM)); | |
1241 | ||
1242 | if (vlen == CTF_MAX_VLEN) | |
1243 | return (ctf_set_errno (fp, ECTF_DTFULL)); | |
1244 | ||
1245 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
1246 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
1247 | { | |
1248 | if (strcmp (dmd->dmd_name, name) == 0) | |
1249 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1250 | } | |
1251 | ||
1252 | if ((dmd = ctf_alloc (sizeof (ctf_dmdef_t))) == NULL) | |
1253 | return (ctf_set_errno (fp, EAGAIN)); | |
1254 | ||
1255 | if ((s = ctf_strdup (name)) == NULL) | |
1256 | { | |
1257 | ctf_free (dmd); | |
1258 | return (ctf_set_errno (fp, EAGAIN)); | |
1259 | } | |
1260 | ||
1261 | dmd->dmd_name = s; | |
1262 | dmd->dmd_type = CTF_ERR; | |
1263 | dmd->dmd_offset = 0; | |
1264 | dmd->dmd_value = value; | |
1265 | ||
1266 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, root, vlen + 1); | |
1267 | ctf_list_append (&dtd->dtd_u.dtu_members, dmd); | |
1268 | ||
47d546f4 NA |
1269 | fp->ctf_flags |= LCTF_DIRTY; |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | int | |
1275 | ctf_add_member_offset (ctf_file_t *fp, ctf_id_t souid, const char *name, | |
1276 | ctf_id_t type, unsigned long bit_offset) | |
1277 | { | |
1278 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, souid); | |
1279 | ctf_dmdef_t *dmd; | |
1280 | ||
1281 | ssize_t msize, malign, ssize; | |
1282 | uint32_t kind, vlen, root; | |
1283 | char *s = NULL; | |
1284 | ||
1285 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1286 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1287 | ||
1288 | if (dtd == NULL) | |
1289 | return (ctf_set_errno (fp, ECTF_BADID)); | |
1290 | ||
1291 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
1292 | root = LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info); | |
1293 | vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
1294 | ||
1295 | if (kind != CTF_K_STRUCT && kind != CTF_K_UNION) | |
1296 | return (ctf_set_errno (fp, ECTF_NOTSOU)); | |
1297 | ||
1298 | if (vlen == CTF_MAX_VLEN) | |
1299 | return (ctf_set_errno (fp, ECTF_DTFULL)); | |
1300 | ||
1301 | if (name != NULL) | |
1302 | { | |
1303 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
1304 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
1305 | { | |
1306 | if (dmd->dmd_name != NULL && strcmp (dmd->dmd_name, name) == 0) | |
1307 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1308 | } | |
1309 | } | |
1310 | ||
a0486bac JM |
1311 | if ((msize = ctf_type_size (fp, type)) < 0 || |
1312 | (malign = ctf_type_align (fp, type)) < 0) | |
1313 | return -1; /* errno is set for us. */ | |
47d546f4 NA |
1314 | |
1315 | if ((dmd = ctf_alloc (sizeof (ctf_dmdef_t))) == NULL) | |
1316 | return (ctf_set_errno (fp, EAGAIN)); | |
1317 | ||
1318 | if (name != NULL && (s = ctf_strdup (name)) == NULL) | |
1319 | { | |
1320 | ctf_free (dmd); | |
1321 | return (ctf_set_errno (fp, EAGAIN)); | |
1322 | } | |
1323 | ||
1324 | dmd->dmd_name = s; | |
1325 | dmd->dmd_type = type; | |
1326 | dmd->dmd_value = -1; | |
1327 | ||
1328 | if (kind == CTF_K_STRUCT && vlen != 0) | |
1329 | { | |
1330 | if (bit_offset == (unsigned long) - 1) | |
1331 | { | |
1332 | /* Natural alignment. */ | |
1333 | ||
1334 | ctf_dmdef_t *lmd = ctf_list_prev (&dtd->dtd_u.dtu_members); | |
1335 | ctf_id_t ltype = ctf_type_resolve (fp, lmd->dmd_type); | |
1336 | size_t off = lmd->dmd_offset; | |
1337 | ||
1338 | ctf_encoding_t linfo; | |
1339 | ssize_t lsize; | |
1340 | ||
a0486bac | 1341 | if (ctf_type_encoding (fp, ltype, &linfo) == 0) |
47d546f4 | 1342 | off += linfo.cte_bits; |
a0486bac | 1343 | else if ((lsize = ctf_type_size (fp, ltype)) > 0) |
76fad999 | 1344 | off += lsize * CHAR_BIT; |
47d546f4 NA |
1345 | |
1346 | /* Round up the offset of the end of the last member to | |
1347 | the next byte boundary, convert 'off' to bytes, and | |
1348 | then round it up again to the next multiple of the | |
1349 | alignment required by the new member. Finally, | |
1350 | convert back to bits and store the result in | |
1351 | dmd_offset. Technically we could do more efficient | |
1352 | packing if the new member is a bit-field, but we're | |
1353 | the "compiler" and ANSI says we can do as we choose. */ | |
1354 | ||
76fad999 | 1355 | off = roundup (off, CHAR_BIT) / CHAR_BIT; |
47d546f4 | 1356 | off = roundup (off, MAX (malign, 1)); |
76fad999 | 1357 | dmd->dmd_offset = off * CHAR_BIT; |
47d546f4 NA |
1358 | ssize = off + msize; |
1359 | } | |
1360 | else | |
1361 | { | |
1362 | /* Specified offset in bits. */ | |
1363 | ||
1364 | dmd->dmd_offset = bit_offset; | |
1365 | ssize = ctf_get_ctt_size (fp, &dtd->dtd_data, NULL, NULL); | |
76fad999 | 1366 | ssize = MAX (ssize, ((signed) bit_offset / CHAR_BIT) + msize); |
47d546f4 NA |
1367 | } |
1368 | } | |
1369 | else | |
1370 | { | |
1371 | dmd->dmd_offset = 0; | |
1372 | ssize = ctf_get_ctt_size (fp, &dtd->dtd_data, NULL, NULL); | |
1373 | ssize = MAX (ssize, msize); | |
1374 | } | |
1375 | ||
a0486bac | 1376 | if ((size_t) ssize > CTF_MAX_SIZE) |
47d546f4 NA |
1377 | { |
1378 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1379 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (ssize); | |
1380 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (ssize); | |
1381 | } | |
1382 | else | |
1383 | dtd->dtd_data.ctt_size = (uint32_t) ssize; | |
1384 | ||
1385 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, root, vlen + 1); | |
1386 | ctf_list_append (&dtd->dtd_u.dtu_members, dmd); | |
1387 | ||
47d546f4 NA |
1388 | fp->ctf_flags |= LCTF_DIRTY; |
1389 | return 0; | |
1390 | } | |
1391 | ||
1392 | int | |
1393 | ctf_add_member_encoded (ctf_file_t *fp, ctf_id_t souid, const char *name, | |
1394 | ctf_id_t type, unsigned long bit_offset, | |
1395 | const ctf_encoding_t encoding) | |
1396 | { | |
1397 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, type); | |
1398 | int kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
1399 | int otype = type; | |
1400 | ||
1401 | if ((kind != CTF_K_INTEGER) && (kind != CTF_K_FLOAT) && (kind != CTF_K_ENUM)) | |
1402 | return (ctf_set_errno (fp, ECTF_NOTINTFP)); | |
1403 | ||
1404 | if ((type = ctf_add_slice (fp, CTF_ADD_NONROOT, otype, &encoding)) == CTF_ERR) | |
a0486bac | 1405 | return -1; /* errno is set for us. */ |
47d546f4 NA |
1406 | |
1407 | return ctf_add_member_offset (fp, souid, name, type, bit_offset); | |
1408 | } | |
1409 | ||
1410 | int | |
1411 | ctf_add_member (ctf_file_t *fp, ctf_id_t souid, const char *name, | |
1412 | ctf_id_t type) | |
1413 | { | |
1414 | return ctf_add_member_offset (fp, souid, name, type, (unsigned long) - 1); | |
1415 | } | |
1416 | ||
1417 | int | |
1418 | ctf_add_variable (ctf_file_t *fp, const char *name, ctf_id_t ref) | |
1419 | { | |
1420 | ctf_dvdef_t *dvd; | |
1421 | ctf_file_t *tmp = fp; | |
1422 | ||
1423 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1424 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1425 | ||
1426 | if (ctf_dvd_lookup (fp, name) != NULL) | |
1427 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1428 | ||
1429 | if (ctf_lookup_by_id (&tmp, ref) == NULL) | |
a0486bac | 1430 | return -1; /* errno is set for us. */ |
47d546f4 NA |
1431 | |
1432 | if ((dvd = ctf_alloc (sizeof (ctf_dvdef_t))) == NULL) | |
1433 | return (ctf_set_errno (fp, EAGAIN)); | |
1434 | ||
1435 | if (name != NULL && (dvd->dvd_name = ctf_strdup (name)) == NULL) | |
1436 | { | |
1437 | ctf_free (dvd); | |
1438 | return (ctf_set_errno (fp, EAGAIN)); | |
1439 | } | |
1440 | dvd->dvd_type = ref; | |
1441 | dvd->dvd_snapshots = fp->ctf_snapshots; | |
1442 | ||
24865428 NA |
1443 | if (ctf_dvd_insert (fp, dvd) < 0) |
1444 | { | |
1445 | ctf_free (dvd); | |
1446 | return -1; /* errno is set for us. */ | |
1447 | } | |
47d546f4 | 1448 | |
47d546f4 NA |
1449 | fp->ctf_flags |= LCTF_DIRTY; |
1450 | return 0; | |
1451 | } | |
1452 | ||
c499eb68 NA |
1453 | static int |
1454 | enumcmp (const char *name, int value, void *arg) | |
1455 | { | |
1456 | ctf_bundle_t *ctb = arg; | |
1457 | int bvalue; | |
1458 | ||
a0486bac | 1459 | if (ctf_enum_value (ctb->ctb_file, ctb->ctb_type, name, &bvalue) < 0) |
c499eb68 NA |
1460 | { |
1461 | ctf_dprintf ("Conflict due to member %s iteration error.\n", name); | |
1462 | return 1; | |
1463 | } | |
1464 | if (value != bvalue) | |
1465 | { | |
1466 | ctf_dprintf ("Conflict due to value change: %i versus %i\n", | |
1467 | value, bvalue); | |
1468 | return 1; | |
1469 | } | |
1470 | return 0; | |
1471 | } | |
1472 | ||
1473 | static int | |
1474 | enumadd (const char *name, int value, void *arg) | |
1475 | { | |
1476 | ctf_bundle_t *ctb = arg; | |
1477 | ||
1478 | return (ctf_add_enumerator (ctb->ctb_file, ctb->ctb_type, | |
a0486bac | 1479 | name, value) < 0); |
c499eb68 NA |
1480 | } |
1481 | ||
1482 | static int | |
1483 | membcmp (const char *name, ctf_id_t type _libctf_unused_, unsigned long offset, | |
1484 | void *arg) | |
1485 | { | |
1486 | ctf_bundle_t *ctb = arg; | |
1487 | ctf_membinfo_t ctm; | |
1488 | ||
a0486bac | 1489 | if (ctf_member_info (ctb->ctb_file, ctb->ctb_type, name, &ctm) < 0) |
c499eb68 NA |
1490 | { |
1491 | ctf_dprintf ("Conflict due to member %s iteration error.\n", name); | |
1492 | return 1; | |
1493 | } | |
1494 | if (ctm.ctm_offset != offset) | |
1495 | { | |
1496 | ctf_dprintf ("Conflict due to member %s offset change: " | |
1497 | "%lx versus %lx\n", name, ctm.ctm_offset, offset); | |
1498 | return 1; | |
1499 | } | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | static int | |
1504 | membadd (const char *name, ctf_id_t type, unsigned long offset, void *arg) | |
1505 | { | |
1506 | ctf_bundle_t *ctb = arg; | |
1507 | ctf_dmdef_t *dmd; | |
1508 | char *s = NULL; | |
1509 | ||
1510 | if ((dmd = ctf_alloc (sizeof (ctf_dmdef_t))) == NULL) | |
1511 | return (ctf_set_errno (ctb->ctb_file, EAGAIN)); | |
1512 | ||
1513 | if (name != NULL && (s = ctf_strdup (name)) == NULL) | |
1514 | { | |
1515 | ctf_free (dmd); | |
1516 | return (ctf_set_errno (ctb->ctb_file, EAGAIN)); | |
1517 | } | |
1518 | ||
1519 | /* For now, dmd_type is copied as the src_fp's type; it is reset to an | |
1520 | equivalent dst_fp type by a final loop in ctf_add_type(), below. */ | |
1521 | dmd->dmd_name = s; | |
1522 | dmd->dmd_type = type; | |
1523 | dmd->dmd_offset = offset; | |
1524 | dmd->dmd_value = -1; | |
1525 | ||
1526 | ctf_list_append (&ctb->ctb_dtd->dtd_u.dtu_members, dmd); | |
1527 | ||
c499eb68 NA |
1528 | ctb->ctb_file->ctf_flags |= LCTF_DIRTY; |
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | /* The ctf_add_type routine is used to copy a type from a source CTF container | |
1533 | to a dynamic destination container. This routine operates recursively by | |
1534 | following the source type's links and embedded member types. If the | |
1535 | destination container already contains a named type which has the same | |
1536 | attributes, then we succeed and return this type but no changes occur. */ | |
1537 | ctf_id_t | |
1538 | ctf_add_type (ctf_file_t *dst_fp, ctf_file_t *src_fp, ctf_id_t src_type) | |
1539 | { | |
1540 | ctf_id_t dst_type = CTF_ERR; | |
1541 | uint32_t dst_kind = CTF_K_UNKNOWN; | |
1542 | ctf_id_t tmp; | |
1543 | ||
1544 | const char *name; | |
1545 | uint32_t kind, flag, vlen; | |
1546 | ||
1547 | const ctf_type_t *src_tp, *dst_tp; | |
1548 | ctf_bundle_t src, dst; | |
1549 | ctf_encoding_t src_en, dst_en; | |
1550 | ctf_arinfo_t src_ar, dst_ar; | |
1551 | ||
1552 | ctf_dtdef_t *dtd; | |
1553 | ctf_funcinfo_t ctc; | |
c499eb68 NA |
1554 | |
1555 | ctf_hash_t *hp; | |
1556 | ||
1557 | if (!(dst_fp->ctf_flags & LCTF_RDWR)) | |
1558 | return (ctf_set_errno (dst_fp, ECTF_RDONLY)); | |
1559 | ||
1560 | if ((src_tp = ctf_lookup_by_id (&src_fp, src_type)) == NULL) | |
1561 | return (ctf_set_errno (dst_fp, ctf_errno (src_fp))); | |
1562 | ||
1563 | name = ctf_strptr (src_fp, src_tp->ctt_name); | |
1564 | kind = LCTF_INFO_KIND (src_fp, src_tp->ctt_info); | |
1565 | flag = LCTF_INFO_ISROOT (src_fp, src_tp->ctt_info); | |
1566 | vlen = LCTF_INFO_VLEN (src_fp, src_tp->ctt_info); | |
1567 | ||
1568 | switch (kind) | |
1569 | { | |
1570 | case CTF_K_STRUCT: | |
1571 | hp = dst_fp->ctf_structs; | |
1572 | break; | |
1573 | case CTF_K_UNION: | |
1574 | hp = dst_fp->ctf_unions; | |
1575 | break; | |
1576 | case CTF_K_ENUM: | |
1577 | hp = dst_fp->ctf_enums; | |
1578 | break; | |
1579 | default: | |
1580 | hp = dst_fp->ctf_names; | |
1581 | break; | |
1582 | } | |
1583 | ||
1584 | /* If the source type has a name and is a root type (visible at the | |
1585 | top-level scope), lookup the name in the destination container and | |
1586 | verify that it is of the same kind before we do anything else. */ | |
1587 | ||
1588 | if ((flag & CTF_ADD_ROOT) && name[0] != '\0' | |
1589 | && (tmp = ctf_hash_lookup_type (hp, dst_fp, name)) != 0) | |
1590 | { | |
1591 | dst_type = tmp; | |
1592 | dst_kind = ctf_type_kind_unsliced (dst_fp, dst_type); | |
1593 | } | |
1594 | ||
1595 | /* If an identically named dst_type exists, fail with ECTF_CONFLICT | |
1596 | unless dst_type is a forward declaration and src_type is a struct, | |
1597 | union, or enum (i.e. the definition of the previous forward decl). */ | |
1598 | ||
1599 | if (dst_type != CTF_ERR && dst_kind != kind | |
1600 | && (dst_kind != CTF_K_FORWARD | |
1601 | || (kind != CTF_K_ENUM && kind != CTF_K_STRUCT | |
1602 | && kind != CTF_K_UNION))) | |
1603 | { | |
1604 | ctf_dprintf ("Conflict for type %s: kinds differ, new: %i; " | |
1605 | "old (ID %lx): %i\n", name, kind, dst_type, dst_kind); | |
1606 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1607 | } | |
1608 | ||
1609 | /* We take special action for an integer, float, or slice since it is | |
1610 | described not only by its name but also its encoding. For integers, | |
1611 | bit-fields exploit this degeneracy. */ | |
1612 | ||
1613 | if (kind == CTF_K_INTEGER || kind == CTF_K_FLOAT || kind == CTF_K_SLICE) | |
1614 | { | |
1615 | if (ctf_type_encoding (src_fp, src_type, &src_en) != 0) | |
1616 | return (ctf_set_errno (dst_fp, ctf_errno (src_fp))); | |
1617 | ||
1618 | if (dst_type != CTF_ERR) | |
1619 | { | |
1620 | ctf_file_t *fp = dst_fp; | |
1621 | ||
1622 | if ((dst_tp = ctf_lookup_by_id (&fp, dst_type)) == NULL) | |
1623 | return CTF_ERR; | |
1624 | ||
1625 | if (LCTF_INFO_ISROOT (fp, dst_tp->ctt_info) & CTF_ADD_ROOT) | |
1626 | { | |
1627 | /* The type that we found in the hash is also root-visible. If | |
1628 | the two types match then use the existing one; otherwise, | |
1629 | declare a conflict. Note: slices are not certain to match | |
1630 | even if there is no conflict: we must check the contained type | |
1631 | too. */ | |
1632 | ||
1633 | if (ctf_type_encoding (dst_fp, dst_type, &dst_en) != 0) | |
1634 | return CTF_ERR; /* errno set for us. */ | |
1635 | ||
1636 | if (memcmp (&src_en, &dst_en, sizeof (ctf_encoding_t)) == 0) | |
1637 | { | |
1638 | if (kind != CTF_K_SLICE) | |
1639 | return dst_type; | |
1640 | } | |
1641 | else | |
1642 | { | |
1643 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1644 | } | |
1645 | } | |
1646 | else | |
1647 | { | |
1648 | /* We found a non-root-visible type in the hash. We reset | |
1649 | dst_type to ensure that we continue to look for a possible | |
1650 | conflict in the pending list. */ | |
1651 | ||
1652 | dst_type = CTF_ERR; | |
1653 | } | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | /* If the non-empty name was not found in the appropriate hash, search | |
1658 | the list of pending dynamic definitions that are not yet committed. | |
1659 | If a matching name and kind are found, assume this is the type that | |
1660 | we are looking for. This is necessary to permit ctf_add_type() to | |
1661 | operate recursively on entities such as a struct that contains a | |
1662 | pointer member that refers to the same struct type. */ | |
1663 | ||
1664 | if (dst_type == CTF_ERR && name[0] != '\0') | |
1665 | { | |
1666 | for (dtd = ctf_list_prev (&dst_fp->ctf_dtdefs); dtd != NULL | |
1667 | && LCTF_TYPE_TO_INDEX (src_fp, dtd->dtd_type) > dst_fp->ctf_dtoldid; | |
1668 | dtd = ctf_list_prev (dtd)) | |
1669 | { | |
1670 | if (LCTF_INFO_KIND (src_fp, dtd->dtd_data.ctt_info) == kind | |
1671 | && dtd->dtd_name != NULL && strcmp (dtd->dtd_name, name) == 0) | |
1672 | { | |
1673 | int sroot; /* Is the src root-visible? */ | |
1674 | int droot; /* Is the dst root-visible? */ | |
1675 | int match; /* Do the encodings match? */ | |
1676 | ||
1677 | if (kind != CTF_K_INTEGER && kind != CTF_K_FLOAT && kind != CTF_K_SLICE) | |
1678 | return dtd->dtd_type; | |
1679 | ||
1680 | sroot = (flag & CTF_ADD_ROOT); | |
1681 | droot = (LCTF_INFO_ISROOT (dst_fp, | |
1682 | dtd->dtd_data. | |
1683 | ctt_info) & CTF_ADD_ROOT); | |
1684 | ||
1685 | match = (memcmp (&src_en, &dtd->dtd_u.dtu_enc, | |
1686 | sizeof (ctf_encoding_t)) == 0); | |
1687 | ||
1688 | /* If the types share the same encoding then return the id of the | |
1689 | first unless one type is root-visible and the other is not; in | |
1690 | that case the new type must get a new id if a match is never | |
1691 | found. Note: slices are not certain to match even if there is | |
1692 | no conflict: we must check the contained type too. */ | |
1693 | ||
1694 | if (match && sroot == droot) | |
1695 | { | |
1696 | if (kind != CTF_K_SLICE) | |
1697 | return dtd->dtd_type; | |
1698 | } | |
1699 | else if (!match && sroot && droot) | |
1700 | { | |
1701 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1702 | } | |
1703 | } | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | src.ctb_file = src_fp; | |
1708 | src.ctb_type = src_type; | |
1709 | src.ctb_dtd = NULL; | |
1710 | ||
1711 | dst.ctb_file = dst_fp; | |
1712 | dst.ctb_type = dst_type; | |
1713 | dst.ctb_dtd = NULL; | |
1714 | ||
1715 | /* Now perform kind-specific processing. If dst_type is CTF_ERR, then | |
1716 | we add a new type with the same properties as src_type to dst_fp. | |
1717 | If dst_type is not CTF_ERR, then we verify that dst_type has the | |
1718 | same attributes as src_type. We recurse for embedded references. */ | |
1719 | switch (kind) | |
1720 | { | |
1721 | case CTF_K_INTEGER: | |
1722 | /* If we found a match we will have either returned it or declared a | |
1723 | conflict. */ | |
1724 | dst_type = ctf_add_integer (dst_fp, flag, name, &src_en); | |
1725 | break; | |
1726 | ||
1727 | case CTF_K_FLOAT: | |
1728 | /* If we found a match we will have either returned it or declared a | |
1729 | conflict. */ | |
1730 | dst_type = ctf_add_float (dst_fp, flag, name, &src_en); | |
1731 | break; | |
1732 | ||
1733 | case CTF_K_SLICE: | |
1734 | /* We have checked for conflicting encodings: now try to add the | |
1735 | contained type. */ | |
1736 | src_type = ctf_type_reference (src_fp, src_type); | |
1737 | dst_type = ctf_add_type (dst_fp, src_fp, src_type); | |
1738 | ||
1739 | if (src_type == CTF_ERR) | |
1740 | return CTF_ERR; /* errno is set for us. */ | |
1741 | ||
1742 | dst_type = ctf_add_slice (dst_fp, flag, src_type, &src_en); | |
1743 | break; | |
1744 | ||
1745 | case CTF_K_POINTER: | |
1746 | case CTF_K_VOLATILE: | |
1747 | case CTF_K_CONST: | |
1748 | case CTF_K_RESTRICT: | |
1749 | src_type = ctf_type_reference (src_fp, src_type); | |
1750 | src_type = ctf_add_type (dst_fp, src_fp, src_type); | |
1751 | ||
1752 | if (src_type == CTF_ERR) | |
1753 | return CTF_ERR; /* errno is set for us. */ | |
1754 | ||
1755 | dst_type = ctf_add_reftype (dst_fp, flag, src_type, kind); | |
1756 | break; | |
1757 | ||
1758 | case CTF_K_ARRAY: | |
a0486bac | 1759 | if (ctf_array_info (src_fp, src_type, &src_ar) != 0) |
c499eb68 NA |
1760 | return (ctf_set_errno (dst_fp, ctf_errno (src_fp))); |
1761 | ||
1762 | src_ar.ctr_contents = | |
1763 | ctf_add_type (dst_fp, src_fp, src_ar.ctr_contents); | |
1764 | src_ar.ctr_index = ctf_add_type (dst_fp, src_fp, src_ar.ctr_index); | |
1765 | src_ar.ctr_nelems = src_ar.ctr_nelems; | |
1766 | ||
1767 | if (src_ar.ctr_contents == CTF_ERR || src_ar.ctr_index == CTF_ERR) | |
1768 | return CTF_ERR; /* errno is set for us. */ | |
1769 | ||
1770 | if (dst_type != CTF_ERR) | |
1771 | { | |
1772 | if (ctf_array_info (dst_fp, dst_type, &dst_ar) != 0) | |
1773 | return CTF_ERR; /* errno is set for us. */ | |
1774 | ||
1775 | if (memcmp (&src_ar, &dst_ar, sizeof (ctf_arinfo_t))) | |
1776 | { | |
1777 | ctf_dprintf ("Conflict for type %s against ID %lx: " | |
1778 | "array info differs, old %lx/%lx/%x; " | |
1779 | "new: %lx/%lx/%x\n", name, dst_type, | |
1780 | src_ar.ctr_contents, src_ar.ctr_index, | |
1781 | src_ar.ctr_nelems, dst_ar.ctr_contents, | |
1782 | dst_ar.ctr_index, dst_ar.ctr_nelems); | |
1783 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1784 | } | |
1785 | } | |
1786 | else | |
1787 | dst_type = ctf_add_array (dst_fp, flag, &src_ar); | |
1788 | break; | |
1789 | ||
1790 | case CTF_K_FUNCTION: | |
1791 | ctc.ctc_return = ctf_add_type (dst_fp, src_fp, src_tp->ctt_type); | |
1792 | ctc.ctc_argc = 0; | |
1793 | ctc.ctc_flags = 0; | |
1794 | ||
1795 | if (ctc.ctc_return == CTF_ERR) | |
1796 | return CTF_ERR; /* errno is set for us. */ | |
1797 | ||
1798 | dst_type = ctf_add_function (dst_fp, flag, &ctc, NULL); | |
1799 | break; | |
1800 | ||
1801 | case CTF_K_STRUCT: | |
1802 | case CTF_K_UNION: | |
1803 | { | |
1804 | ctf_dmdef_t *dmd; | |
1805 | int errs = 0; | |
a0486bac JM |
1806 | size_t size; |
1807 | ssize_t ssize; | |
c499eb68 NA |
1808 | |
1809 | /* Technically to match a struct or union we need to check both | |
1810 | ways (src members vs. dst, dst members vs. src) but we make | |
1811 | this more optimal by only checking src vs. dst and comparing | |
1812 | the total size of the structure (which we must do anyway) | |
1813 | which covers the possibility of dst members not in src. | |
1814 | This optimization can be defeated for unions, but is so | |
1815 | pathological as to render it irrelevant for our purposes. */ | |
1816 | ||
1817 | if (dst_type != CTF_ERR && dst_kind != CTF_K_FORWARD) | |
1818 | { | |
1819 | if (ctf_type_size (src_fp, src_type) != | |
1820 | ctf_type_size (dst_fp, dst_type)) | |
1821 | { | |
1822 | ctf_dprintf ("Conflict for type %s against ID %lx: " | |
62d8e3b7 NA |
1823 | "union size differs, old %li, new %li\n", |
1824 | name, dst_type, | |
1825 | (long) ctf_type_size (src_fp, src_type), | |
1826 | (long) ctf_type_size (dst_fp, dst_type)); | |
c499eb68 NA |
1827 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); |
1828 | } | |
1829 | ||
1830 | if (ctf_member_iter (src_fp, src_type, membcmp, &dst)) | |
1831 | { | |
1832 | ctf_dprintf ("Conflict for type %s against ID %lx: " | |
1833 | "members differ, see above\n", name, dst_type); | |
1834 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1835 | } | |
1836 | ||
1837 | break; | |
1838 | } | |
1839 | ||
1840 | /* Unlike the other cases, copying structs and unions is done | |
1841 | manually so as to avoid repeated lookups in ctf_add_member | |
1842 | and to ensure the exact same member offsets as in src_type. */ | |
1843 | ||
1844 | dst_type = ctf_add_generic (dst_fp, flag, name, &dtd); | |
1845 | if (dst_type == CTF_ERR) | |
1846 | return CTF_ERR; /* errno is set for us. */ | |
1847 | ||
1848 | dst.ctb_type = dst_type; | |
1849 | dst.ctb_dtd = dtd; | |
1850 | ||
1851 | if (ctf_member_iter (src_fp, src_type, membadd, &dst) != 0) | |
1852 | errs++; /* Increment errs and fail at bottom of case. */ | |
1853 | ||
a0486bac JM |
1854 | if ((ssize = ctf_type_size (src_fp, src_type)) < 0) |
1855 | return CTF_ERR; /* errno is set for us. */ | |
1856 | ||
1857 | size = (size_t) ssize; | |
1858 | if (size > CTF_MAX_SIZE) | |
c499eb68 NA |
1859 | { |
1860 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1861 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
1862 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
1863 | } | |
1864 | else | |
1865 | dtd->dtd_data.ctt_size = (uint32_t) size; | |
1866 | ||
1867 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, vlen); | |
1868 | ||
1869 | /* Make a final pass through the members changing each dmd_type (a | |
1870 | src_fp type) to an equivalent type in dst_fp. We pass through all | |
1871 | members, leaving any that fail set to CTF_ERR. */ | |
1872 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
1873 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
1874 | { | |
1875 | if ((dmd->dmd_type = ctf_add_type (dst_fp, src_fp, | |
1876 | dmd->dmd_type)) == CTF_ERR) | |
1877 | errs++; | |
1878 | } | |
1879 | ||
1880 | if (errs) | |
1881 | return CTF_ERR; /* errno is set for us. */ | |
1882 | break; | |
1883 | } | |
1884 | ||
1885 | case CTF_K_ENUM: | |
1886 | if (dst_type != CTF_ERR && dst_kind != CTF_K_FORWARD) | |
1887 | { | |
1888 | if (ctf_enum_iter (src_fp, src_type, enumcmp, &dst) | |
1889 | || ctf_enum_iter (dst_fp, dst_type, enumcmp, &src)) | |
1890 | { | |
1891 | ctf_dprintf ("Conflict for enum %s against ID %lx: " | |
1892 | "members differ, see above\n", name, dst_type); | |
1893 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1894 | } | |
1895 | } | |
1896 | else | |
1897 | { | |
1898 | dst_type = ctf_add_enum (dst_fp, flag, name); | |
1899 | if ((dst.ctb_type = dst_type) == CTF_ERR | |
1900 | || ctf_enum_iter (src_fp, src_type, enumadd, &dst)) | |
1901 | return CTF_ERR; /* errno is set for us */ | |
1902 | } | |
1903 | break; | |
1904 | ||
1905 | case CTF_K_FORWARD: | |
1906 | if (dst_type == CTF_ERR) | |
1907 | { | |
1908 | dst_type = ctf_add_forward (dst_fp, flag, | |
1909 | name, CTF_K_STRUCT); /* Assume STRUCT. */ | |
1910 | } | |
1911 | break; | |
1912 | ||
1913 | case CTF_K_TYPEDEF: | |
1914 | src_type = ctf_type_reference (src_fp, src_type); | |
1915 | src_type = ctf_add_type (dst_fp, src_fp, src_type); | |
1916 | ||
1917 | if (src_type == CTF_ERR) | |
1918 | return CTF_ERR; /* errno is set for us. */ | |
1919 | ||
1920 | /* If dst_type is not CTF_ERR at this point, we should check if | |
1921 | ctf_type_reference(dst_fp, dst_type) != src_type and if so fail with | |
1922 | ECTF_CONFLICT. However, this causes problems with bitness typedefs | |
1923 | that vary based on things like if 32-bit then pid_t is int otherwise | |
1924 | long. We therefore omit this check and assume that if the identically | |
1925 | named typedef already exists in dst_fp, it is correct or | |
1926 | equivalent. */ | |
1927 | ||
1928 | if (dst_type == CTF_ERR) | |
1929 | { | |
1930 | dst_type = ctf_add_typedef (dst_fp, flag, name, src_type); | |
1931 | } | |
1932 | break; | |
1933 | ||
1934 | default: | |
1935 | return (ctf_set_errno (dst_fp, ECTF_CORRUPT)); | |
1936 | } | |
1937 | ||
1938 | return dst_type; | |
1939 | } | |
1940 | ||
fd55eae8 | 1941 | /* Write the compressed CTF data stream to the specified gzFile descriptor. */ |
47d546f4 NA |
1942 | int |
1943 | ctf_gzwrite (ctf_file_t *fp, gzFile fd) | |
1944 | { | |
fd55eae8 NA |
1945 | const unsigned char *buf; |
1946 | ssize_t resid; | |
47d546f4 NA |
1947 | ssize_t len; |
1948 | ||
fd55eae8 NA |
1949 | resid = sizeof (ctf_header_t); |
1950 | buf = (unsigned char *) fp->ctf_header; | |
1951 | while (resid != 0) | |
1952 | { | |
1953 | if ((len = gzwrite (fd, buf, resid)) <= 0) | |
1954 | return (ctf_set_errno (fp, errno)); | |
1955 | resid -= len; | |
1956 | buf += len; | |
1957 | } | |
1958 | ||
1959 | resid = fp->ctf_size; | |
1960 | buf = fp->ctf_buf; | |
47d546f4 NA |
1961 | while (resid != 0) |
1962 | { | |
1963 | if ((len = gzwrite (fd, buf, resid)) <= 0) | |
1964 | return (ctf_set_errno (fp, errno)); | |
1965 | resid -= len; | |
1966 | buf += len; | |
1967 | } | |
1968 | ||
1969 | return 0; | |
1970 | } | |
1971 | ||
1972 | /* Compress the specified CTF data stream and write it to the specified file | |
1973 | descriptor. */ | |
1974 | int | |
1975 | ctf_compress_write (ctf_file_t *fp, int fd) | |
1976 | { | |
1977 | unsigned char *buf; | |
1978 | unsigned char *bp; | |
1979 | ctf_header_t h; | |
1980 | ctf_header_t *hp = &h; | |
1981 | ssize_t header_len = sizeof (ctf_header_t); | |
1982 | ssize_t compress_len; | |
fd55eae8 | 1983 | size_t max_compress_len = compressBound (fp->ctf_size); |
47d546f4 NA |
1984 | ssize_t len; |
1985 | int rc; | |
1986 | int err = 0; | |
1987 | ||
fd55eae8 | 1988 | memcpy (hp, fp->ctf_header, header_len); |
47d546f4 NA |
1989 | hp->cth_flags |= CTF_F_COMPRESS; |
1990 | ||
65365aa8 | 1991 | if ((buf = ctf_alloc (max_compress_len)) == NULL) |
47d546f4 NA |
1992 | return (ctf_set_errno (fp, ECTF_ZALLOC)); |
1993 | ||
1994 | compress_len = max_compress_len; | |
65365aa8 | 1995 | if ((rc = compress (buf, (uLongf *) &compress_len, |
fd55eae8 | 1996 | fp->ctf_buf, fp->ctf_size)) != Z_OK) |
47d546f4 NA |
1997 | { |
1998 | ctf_dprintf ("zlib deflate err: %s\n", zError (rc)); | |
1999 | err = ctf_set_errno (fp, ECTF_COMPRESS); | |
65365aa8 | 2000 | ctf_free (buf); |
47d546f4 NA |
2001 | goto ret; |
2002 | } | |
2003 | ||
2004 | while (header_len > 0) | |
2005 | { | |
2006 | if ((len = write (fd, hp, header_len)) < 0) | |
2007 | { | |
2008 | err = ctf_set_errno (fp, errno); | |
2009 | goto ret; | |
2010 | } | |
2011 | header_len -= len; | |
2012 | hp += len; | |
2013 | } | |
2014 | ||
2015 | bp = buf; | |
2016 | while (compress_len > 0) | |
2017 | { | |
2018 | if ((len = write (fd, bp, compress_len)) < 0) | |
2019 | { | |
2020 | err = ctf_set_errno (fp, errno); | |
2021 | goto ret; | |
2022 | } | |
2023 | compress_len -= len; | |
2024 | bp += len; | |
2025 | } | |
2026 | ||
2027 | ret: | |
65365aa8 | 2028 | ctf_free (buf); |
47d546f4 NA |
2029 | return err; |
2030 | } | |
2031 | ||
5537f9b9 NA |
2032 | /* Optionally compress the specified CTF data stream and return it as a new |
2033 | dynamically-allocated string. */ | |
2034 | unsigned char * | |
2035 | ctf_write_mem (ctf_file_t *fp, size_t *size, size_t threshold) | |
2036 | { | |
2037 | unsigned char *buf; | |
2038 | unsigned char *bp; | |
2039 | ctf_header_t *hp; | |
2040 | ssize_t header_len = sizeof (ctf_header_t); | |
2041 | ssize_t compress_len; | |
2042 | size_t max_compress_len = compressBound (fp->ctf_size); | |
2043 | int rc; | |
2044 | ||
2045 | if (fp->ctf_size < threshold) | |
2046 | max_compress_len = fp->ctf_size; | |
2047 | if ((buf = malloc (max_compress_len | |
2048 | + sizeof (struct ctf_header))) == NULL) | |
2049 | { | |
2050 | ctf_set_errno (fp, ENOMEM); | |
2051 | return NULL; | |
2052 | } | |
2053 | ||
2054 | hp = (ctf_header_t *) buf; | |
2055 | memcpy (hp, fp->ctf_header, header_len); | |
2056 | bp = buf + sizeof (struct ctf_header); | |
2057 | *size = sizeof (struct ctf_header); | |
2058 | ||
2059 | compress_len = max_compress_len; | |
2060 | ||
2061 | if (fp->ctf_size < threshold) | |
2062 | { | |
2063 | hp->cth_flags &= ~CTF_F_COMPRESS; | |
2064 | memcpy (bp, fp->ctf_buf, fp->ctf_size); | |
2065 | *size += fp->ctf_size; | |
2066 | } | |
2067 | else | |
2068 | { | |
2069 | hp->cth_flags |= CTF_F_COMPRESS; | |
2070 | if ((rc = compress (bp, (uLongf *) &compress_len, | |
2071 | fp->ctf_buf, fp->ctf_size)) != Z_OK) | |
2072 | { | |
2073 | ctf_dprintf ("zlib deflate err: %s\n", zError (rc)); | |
2074 | ctf_set_errno (fp, ECTF_COMPRESS); | |
2075 | ctf_free (buf); | |
2076 | return NULL; | |
2077 | } | |
2078 | *size += compress_len; | |
2079 | } | |
2080 | return buf; | |
2081 | } | |
2082 | ||
fd55eae8 | 2083 | /* Write the uncompressed CTF data stream to the specified file descriptor. */ |
47d546f4 NA |
2084 | int |
2085 | ctf_write (ctf_file_t *fp, int fd) | |
2086 | { | |
fd55eae8 NA |
2087 | const unsigned char *buf; |
2088 | ssize_t resid; | |
47d546f4 NA |
2089 | ssize_t len; |
2090 | ||
fd55eae8 NA |
2091 | resid = sizeof (ctf_header_t); |
2092 | buf = (unsigned char *) fp->ctf_header; | |
2093 | while (resid != 0) | |
2094 | { | |
2095 | if ((len = write (fd, buf, resid)) <= 0) | |
2096 | return (ctf_set_errno (fp, errno)); | |
2097 | resid -= len; | |
2098 | buf += len; | |
2099 | } | |
2100 | ||
2101 | resid = fp->ctf_size; | |
2102 | buf = fp->ctf_buf; | |
47d546f4 NA |
2103 | while (resid != 0) |
2104 | { | |
fd55eae8 | 2105 | if ((len = write (fd, buf, resid)) <= 0) |
47d546f4 NA |
2106 | return (ctf_set_errno (fp, errno)); |
2107 | resid -= len; | |
2108 | buf += len; | |
2109 | } | |
2110 | ||
2111 | return 0; | |
2112 | } |