Commit | Line | Data |
---|---|---|
b061d5f1 RS |
1 | /* Unexec for DEC alpha. schoepf@sc.ZIB-Berlin.DE (Rainer Schoepf). |
2 | ||
20fd0b4f | 3 | Copyright (C) 1994, 2000 Free Software Foundation, Inc. |
b061d5f1 RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
b061d5f1 RS |
21 | |
22 | \f | |
23 | #include <config.h> | |
24 | #include <sys/types.h> | |
25 | #include <sys/file.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/mman.h> | |
28 | #include <stdio.h> | |
29 | #include <varargs.h> | |
20fd0b4f DL |
30 | #include <errno.h> |
31 | #ifdef HAVE_STRING_H | |
32 | #include <string.h> | |
33 | #endif | |
61e63089 | 34 | #if !defined (__NetBSD__) && !defined (__OpenBSD__) |
b061d5f1 RS |
35 | #include <filehdr.h> |
36 | #include <aouthdr.h> | |
37 | #include <scnhdr.h> | |
38 | #include <syms.h> | |
d7b43eaa RS |
39 | #ifndef __linux__ |
40 | # include <reloc.h> | |
41 | # include <elf_abi.h> | |
42 | #endif | |
61e63089 | 43 | #else /* __NetBSD__ or __OpenBSD__ */ |
6538ee2e RS |
44 | /* |
45 | * NetBSD/Alpha does not have 'normal' user-land ECOFF support because | |
46 | * there's no desire to support ECOFF as the executable format in the | |
47 | * long term. | |
48 | */ | |
49 | #include <sys/exec_ecoff.h> | |
50 | ||
51 | /* Structures, constants, etc., that NetBSD defines strangely. */ | |
52 | #define filehdr ecoff_filehdr | |
53 | #define aouthdr ecoff_aouthdr | |
54 | #define scnhdr ecoff_scnhdr | |
55 | #define HDRR struct ecoff_symhdr | |
56 | #define pHDRR HDRR * | |
57 | #define cbHDRR sizeof(HDRR) | |
61e63089 RS |
58 | #ifdef __OpenBSD__ |
59 | #define ALPHAMAGIC ECOFF_MAGIC_NATIVE_ALPHA | |
60 | #else | |
6538ee2e | 61 | #define ALPHAMAGIC ECOFF_MAGIC_NETBSD_ALPHA |
61e63089 | 62 | #endif |
6538ee2e RS |
63 | #define ZMAGIC ECOFF_ZMAGIC |
64 | ||
65 | /* Misc. constants that NetBSD doesn't define at all. */ | |
66 | #define ALPHAUMAGIC 0617 | |
67 | #define _MIPS_NSCNS_MAX 35 | |
68 | #define STYP_TEXT 0x00000020 | |
69 | #define STYP_DATA 0x00000040 | |
70 | #define STYP_BSS 0x00000080 | |
71 | #define STYP_RDATA 0x00000100 | |
72 | #define STYP_SDATA 0x00000200 | |
73 | #define STYP_SBSS 0x00000400 | |
74 | #define STYP_INIT 0x80000000 | |
75 | #define _TEXT ".text" | |
76 | #define _DATA ".data" | |
77 | #define _BSS ".bss" | |
78 | #define _INIT ".init" | |
79 | #define _RDATA ".rdata" | |
80 | #define _SDATA ".sdata" | |
81 | #define _SBSS ".sbss" | |
61e63089 | 82 | #endif /* __NetBSD__ || __OpenBSD__ */ |
b061d5f1 | 83 | |
3fb21e7a DL |
84 | static void fatal_unexec __P ((char *, char *)); |
85 | static void mark_x __P ((char *)); | |
86 | ||
87 | static void update_dynamic_symbols __P ((char *, char *, int, struct aouthdr)); | |
b061d5f1 RS |
88 | |
89 | #define READ(_fd, _buffer, _size, _error_message, _error_arg) \ | |
90 | errno = EEOF; \ | |
91 | if (read (_fd, _buffer, _size) != _size) \ | |
92 | fatal_unexec (_error_message, _error_arg); | |
93 | ||
94 | #define WRITE(_fd, _buffer, _size, _error_message, _error_arg) \ | |
95 | if (write (_fd, _buffer, _size) != _size) \ | |
96 | fatal_unexec (_error_message, _error_arg); | |
97 | ||
98 | #define SEEK(_fd, _position, _error_message, _error_arg) \ | |
99 | errno = EEOF; \ | |
100 | if (lseek (_fd, _position, L_SET) != _position) \ | |
101 | fatal_unexec (_error_message, _error_arg); | |
102 | ||
20fd0b4f DL |
103 | #ifdef HAVE_UNISTD_H |
104 | #include <unistd.h> | |
105 | #else | |
d7b43eaa | 106 | void *sbrk (); |
20fd0b4f | 107 | #endif |
b061d5f1 RS |
108 | |
109 | #define EEOF -1 | |
110 | ||
111 | static struct scnhdr *text_section; | |
d7b43eaa RS |
112 | static struct scnhdr *rel_dyn_section; |
113 | static struct scnhdr *dynstr_section; | |
114 | static struct scnhdr *dynsym_section; | |
b061d5f1 RS |
115 | static struct scnhdr *init_section; |
116 | static struct scnhdr *finit_section; | |
117 | static struct scnhdr *rdata_section; | |
866fc66a | 118 | static struct scnhdr *rconst_section; |
b061d5f1 RS |
119 | static struct scnhdr *data_section; |
120 | static struct scnhdr *pdata_section; | |
121 | static struct scnhdr *xdata_section; | |
122 | static struct scnhdr *got_section; | |
123 | static struct scnhdr *lit8_section; | |
124 | static struct scnhdr *lit4_section; | |
125 | static struct scnhdr *sdata_section; | |
126 | static struct scnhdr *sbss_section; | |
127 | static struct scnhdr *bss_section; | |
128 | ||
d7b43eaa RS |
129 | static struct scnhdr old_data_scnhdr; |
130 | ||
866fc66a | 131 | static unsigned long Brk; |
b061d5f1 RS |
132 | |
133 | struct headers { | |
134 | struct filehdr fhdr; | |
135 | struct aouthdr aout; | |
136 | struct scnhdr section[_MIPS_NSCNS_MAX]; | |
137 | }; | |
138 | ||
139 | ||
140 | ||
141 | /* Define name of label for entry point for the dumped executable. */ | |
142 | ||
143 | #ifndef DEFAULT_ENTRY_ADDRESS | |
144 | #define DEFAULT_ENTRY_ADDRESS __start | |
145 | #endif | |
146 | \f | |
3fb21e7a | 147 | void |
b061d5f1 RS |
148 | unexec (new_name, a_name, data_start, bss_start, entry_address) |
149 | char *new_name, *a_name; | |
150 | unsigned long data_start, bss_start, entry_address; | |
151 | { | |
152 | int new, old; | |
153 | char * oldptr; | |
154 | struct headers ohdr, nhdr; | |
155 | struct stat stat; | |
156 | long pagesize, brk; | |
157 | long newsyms, symrel; | |
158 | int nread; | |
159 | int i; | |
160 | long vaddr, scnptr; | |
161 | #define BUFSIZE 8192 | |
162 | char buffer[BUFSIZE]; | |
163 | ||
164 | if ((old = open (a_name, O_RDONLY)) < 0) | |
165 | fatal_unexec ("opening %s", a_name); | |
166 | ||
167 | new = creat (new_name, 0666); | |
168 | if (new < 0) fatal_unexec ("creating %s", new_name); | |
169 | ||
170 | if ((fstat (old, &stat) == -1)) | |
171 | fatal_unexec ("fstat %s", a_name); | |
172 | ||
173 | oldptr = (char *)mmap (0, stat.st_size, PROT_READ, MAP_FILE|MAP_SHARED, old, 0); | |
174 | ||
175 | if (oldptr == (char *)-1) | |
176 | fatal_unexec ("mmap %s", a_name); | |
177 | ||
178 | close (old); | |
179 | ||
180 | /* This is a copy of the a.out header of the original executable */ | |
181 | ||
182 | ohdr = (*(struct headers *)oldptr); | |
183 | ||
184 | /* This is where we build the new header from the in-memory copy */ | |
185 | ||
186 | nhdr = *((struct headers *)TEXT_START); | |
187 | ||
188 | /* First do some consistency checks */ | |
189 | ||
190 | if (nhdr.fhdr.f_magic != ALPHAMAGIC | |
191 | && nhdr.fhdr.f_magic != ALPHAUMAGIC) | |
192 | { | |
193 | fprintf (stderr, "unexec: input file magic number is %x, not %x or %x.\n", | |
194 | nhdr.fhdr.f_magic, ALPHAMAGIC, ALPHAUMAGIC); | |
195 | exit (1); | |
196 | } | |
197 | ||
198 | if (nhdr.fhdr.f_opthdr != sizeof (nhdr.aout)) | |
199 | { | |
200 | fprintf (stderr, "unexec: input a.out header is %d bytes, not %d.\n", | |
0c08e6df | 201 | nhdr.fhdr.f_opthdr, (int)sizeof (nhdr.aout)); |
b061d5f1 RS |
202 | exit (1); |
203 | } | |
204 | if (nhdr.aout.magic != ZMAGIC) | |
205 | { | |
206 | fprintf (stderr, "unexec: input file a.out magic number is %o, not %o.\n", | |
207 | nhdr.aout.magic, ZMAGIC); | |
208 | exit (1); | |
209 | } | |
210 | ||
211 | ||
212 | /* Now check the existence of certain header section and grab | |
213 | their addresses. */ | |
214 | ||
215 | #define CHECK_SCNHDR(ptr, name, flags) \ | |
216 | ptr = NULL; \ | |
217 | for (i = 0; i < nhdr.fhdr.f_nscns && !ptr; i++) \ | |
d7b43eaa | 218 | if (strncmp (nhdr.section[i].s_name, name, 8) == 0) \ |
b061d5f1 RS |
219 | { \ |
220 | if (nhdr.section[i].s_flags != flags) \ | |
221 | fprintf (stderr, "unexec: %x flags (%x expected) in %s section.\n", \ | |
222 | nhdr.section[i].s_flags, flags, name); \ | |
223 | ptr = nhdr.section + i; \ | |
224 | } \ | |
225 | ||
226 | CHECK_SCNHDR (text_section, _TEXT, STYP_TEXT); | |
227 | CHECK_SCNHDR (init_section, _INIT, STYP_INIT); | |
d7b43eaa RS |
228 | #ifdef _REL_DYN |
229 | CHECK_SCNHDR (rel_dyn_section, _REL_DYN, STYP_REL_DYN); | |
230 | #endif /* _REL_DYN */ | |
231 | #ifdef _DYNSYM | |
232 | CHECK_SCNHDR (dynsym_section, _DYNSYM, STYP_DYNSYM); | |
233 | #endif /* _REL_DYN */ | |
234 | #ifdef _DYNSTR | |
235 | CHECK_SCNHDR (dynstr_section, _DYNSTR, STYP_DYNSTR); | |
236 | #endif /* _REL_DYN */ | |
b061d5f1 RS |
237 | #ifdef _FINI |
238 | CHECK_SCNHDR (finit_section, _FINI, STYP_FINI); | |
239 | #endif /* _FINI */ | |
240 | CHECK_SCNHDR (rdata_section, _RDATA, STYP_RDATA); | |
866fc66a RS |
241 | #ifdef _RCONST |
242 | CHECK_SCNHDR (rconst_section, _RCONST, STYP_RCONST); | |
243 | #endif | |
b061d5f1 RS |
244 | #ifdef _PDATA |
245 | CHECK_SCNHDR (pdata_section, _PDATA, STYP_PDATA); | |
20fd0b4f | 246 | #endif /* _PDATA */ |
b061d5f1 RS |
247 | #ifdef _GOT |
248 | CHECK_SCNHDR (got_section, _GOT, STYP_GOT); | |
20fd0b4f | 249 | #endif /* _GOT */ |
b061d5f1 RS |
250 | CHECK_SCNHDR (data_section, _DATA, STYP_DATA); |
251 | #ifdef _XDATA | |
252 | CHECK_SCNHDR (xdata_section, _XDATA, STYP_XDATA); | |
253 | #endif /* _XDATA */ | |
254 | #ifdef _LIT8 | |
255 | CHECK_SCNHDR (lit8_section, _LIT8, STYP_LIT8); | |
256 | CHECK_SCNHDR (lit4_section, _LIT4, STYP_LIT4); | |
257 | #endif /* _LIT8 */ | |
258 | CHECK_SCNHDR (sdata_section, _SDATA, STYP_SDATA); | |
259 | CHECK_SCNHDR (sbss_section, _SBSS, STYP_SBSS); | |
260 | CHECK_SCNHDR (bss_section, _BSS, STYP_BSS); | |
b061d5f1 RS |
261 | |
262 | ||
263 | pagesize = getpagesize (); | |
264 | brk = (((long) (sbrk (0))) + pagesize - 1) & (-pagesize); | |
265 | ||
266 | /* Remember the current break */ | |
267 | ||
268 | Brk = brk; | |
269 | ||
d7b43eaa RS |
270 | bcopy (data_section, &old_data_scnhdr, sizeof (old_data_scnhdr)); |
271 | ||
b061d5f1 RS |
272 | nhdr.aout.dsize = brk - DATA_START; |
273 | nhdr.aout.bsize = 0; | |
274 | if (entry_address == 0) | |
275 | { | |
276 | extern DEFAULT_ENTRY_ADDRESS (); | |
277 | nhdr.aout.entry = (unsigned long)DEFAULT_ENTRY_ADDRESS; | |
278 | } | |
279 | else | |
280 | nhdr.aout.entry = entry_address; | |
281 | ||
282 | nhdr.aout.bss_start = nhdr.aout.data_start + nhdr.aout.dsize; | |
b061d5f1 | 283 | |
866fc66a RS |
284 | if (rdata_section != NULL) |
285 | { | |
286 | rdata_section->s_size = data_start - DATA_START; | |
287 | ||
288 | /* Adjust start and virtual addresses of rdata_section, too. */ | |
289 | rdata_section->s_vaddr = DATA_START; | |
290 | rdata_section->s_paddr = DATA_START; | |
291 | rdata_section->s_scnptr = text_section->s_scnptr + nhdr.aout.tsize; | |
292 | } | |
b061d5f1 RS |
293 | |
294 | data_section->s_vaddr = data_start; | |
295 | data_section->s_paddr = data_start; | |
296 | data_section->s_size = brk - data_start; | |
866fc66a RS |
297 | |
298 | if (rdata_section != NULL) | |
299 | { | |
300 | data_section->s_scnptr = rdata_section->s_scnptr + rdata_section->s_size; | |
301 | } | |
302 | ||
b061d5f1 RS |
303 | vaddr = data_section->s_vaddr + data_section->s_size; |
304 | scnptr = data_section->s_scnptr + data_section->s_size; | |
305 | if (lit8_section != NULL) | |
306 | { | |
307 | lit8_section->s_vaddr = vaddr; | |
308 | lit8_section->s_paddr = vaddr; | |
309 | lit8_section->s_size = 0; | |
310 | lit8_section->s_scnptr = scnptr; | |
311 | } | |
312 | if (lit4_section != NULL) | |
313 | { | |
314 | lit4_section->s_vaddr = vaddr; | |
315 | lit4_section->s_paddr = vaddr; | |
316 | lit4_section->s_size = 0; | |
317 | lit4_section->s_scnptr = scnptr; | |
318 | } | |
319 | if (sdata_section != NULL) | |
320 | { | |
321 | sdata_section->s_vaddr = vaddr; | |
322 | sdata_section->s_paddr = vaddr; | |
323 | sdata_section->s_size = 0; | |
324 | sdata_section->s_scnptr = scnptr; | |
325 | } | |
326 | #ifdef _XDATA | |
327 | if (xdata_section != NULL) | |
328 | { | |
329 | xdata_section->s_vaddr = vaddr; | |
330 | xdata_section->s_paddr = vaddr; | |
331 | xdata_section->s_size = 0; | |
332 | xdata_section->s_scnptr = scnptr; | |
333 | } | |
334 | #endif | |
335 | #ifdef _GOT | |
336 | if (got_section != NULL) | |
337 | { | |
7d713448 RS |
338 | bcopy (got_section, buffer, sizeof (struct scnhdr)); |
339 | ||
b061d5f1 RS |
340 | got_section->s_vaddr = vaddr; |
341 | got_section->s_paddr = vaddr; | |
342 | got_section->s_size = 0; | |
343 | got_section->s_scnptr = scnptr; | |
344 | } | |
345 | #endif /*_GOT */ | |
346 | if (sbss_section != NULL) | |
347 | { | |
348 | sbss_section->s_vaddr = vaddr; | |
349 | sbss_section->s_paddr = vaddr; | |
350 | sbss_section->s_size = 0; | |
351 | sbss_section->s_scnptr = scnptr; | |
352 | } | |
353 | if (bss_section != NULL) | |
354 | { | |
355 | bss_section->s_vaddr = vaddr; | |
356 | bss_section->s_paddr = vaddr; | |
357 | bss_section->s_size = 0; | |
358 | bss_section->s_scnptr = scnptr; | |
359 | } | |
360 | ||
361 | WRITE (new, (char *)TEXT_START, nhdr.aout.tsize, | |
362 | "writing text section to %s", new_name); | |
363 | WRITE (new, (char *)DATA_START, nhdr.aout.dsize, | |
364 | "writing data section to %s", new_name); | |
365 | ||
7d713448 RS |
366 | #ifdef _GOT |
367 | #define old_got_section ((struct scnhdr *)buffer) | |
368 | ||
369 | if (got_section != NULL) | |
370 | { | |
371 | SEEK (new, old_got_section->s_scnptr, | |
372 | "seeking to start of got_section in %s", new_name); | |
373 | WRITE (new, oldptr + old_got_section->s_scnptr, old_got_section->s_size, | |
374 | "writing new got_section of %s", new_name); | |
375 | SEEK (new, nhdr.aout.tsize + nhdr.aout.dsize, | |
376 | "seeking to end of data section of %s", new_name); | |
377 | } | |
378 | ||
379 | #undef old_got_section | |
380 | #endif | |
b061d5f1 RS |
381 | |
382 | /* | |
383 | * Construct new symbol table header | |
384 | */ | |
385 | ||
386 | bcopy (oldptr + nhdr.fhdr.f_symptr, buffer, cbHDRR); | |
387 | ||
388 | #define symhdr ((pHDRR)buffer) | |
389 | newsyms = nhdr.aout.tsize + nhdr.aout.dsize; | |
390 | symrel = newsyms - nhdr.fhdr.f_symptr; | |
391 | nhdr.fhdr.f_symptr = newsyms; | |
392 | symhdr->cbLineOffset += symrel; | |
393 | symhdr->cbDnOffset += symrel; | |
394 | symhdr->cbPdOffset += symrel; | |
395 | symhdr->cbSymOffset += symrel; | |
396 | symhdr->cbOptOffset += symrel; | |
397 | symhdr->cbAuxOffset += symrel; | |
398 | symhdr->cbSsOffset += symrel; | |
399 | symhdr->cbSsExtOffset += symrel; | |
400 | symhdr->cbFdOffset += symrel; | |
401 | symhdr->cbRfdOffset += symrel; | |
402 | symhdr->cbExtOffset += symrel; | |
403 | ||
404 | WRITE (new, buffer, cbHDRR, "writing symbol table header of %s", new_name); | |
405 | ||
406 | /* | |
407 | * Copy the symbol table and line numbers | |
408 | */ | |
409 | WRITE (new, oldptr + ohdr.fhdr.f_symptr + cbHDRR, | |
410 | stat.st_size - ohdr.fhdr.f_symptr - cbHDRR, | |
411 | "writing symbol table of %s", new_name); | |
412 | ||
6ca5cfd1 RS |
413 | #ifdef _REL_DYN |
414 | if (rel_dyn_section) | |
415 | update_dynamic_symbols (oldptr, new_name, new, nhdr.aout); | |
416 | #endif | |
b061d5f1 RS |
417 | |
418 | #undef symhdr | |
419 | ||
420 | SEEK (new, 0, "seeking to start of header in %s", new_name); | |
421 | WRITE (new, &nhdr, sizeof (nhdr), | |
422 | "writing header of %s", new_name); | |
423 | ||
424 | close (old); | |
425 | close (new); | |
426 | mark_x (new_name); | |
427 | } | |
428 | ||
429 | ||
3fb21e7a | 430 | static void |
d7b43eaa | 431 | update_dynamic_symbols (old, new_name, new, aout) |
866fc66a RS |
432 | char *old; /* Pointer to old executable */ |
433 | char *new_name; /* Name of new executable */ | |
434 | int new; /* File descriptor for new executable */ | |
d7b43eaa | 435 | struct aouthdr aout; /* a.out info from the file header */ |
b061d5f1 | 436 | { |
61e63089 | 437 | #if !defined (__linux__) && !defined (__NetBSD__) && !defined (__OpenBSD__) |
54dfb86c | 438 | |
d7b43eaa RS |
439 | typedef struct dynrel_info { |
440 | char * addr; | |
441 | unsigned type:8; | |
442 | unsigned index:24; | |
443 | unsigned info:8; | |
444 | unsigned pad:8; | |
445 | } dr_info; | |
446 | ||
447 | int nsyms = rel_dyn_section->s_size / sizeof (struct dynrel_info); | |
448 | int i; | |
449 | dr_info * rd_base = (dr_info *) (old + rel_dyn_section->s_scnptr); | |
450 | Elf32_Sym * ds_base = (Elf32_Sym *) (old + dynsym_section->s_scnptr); | |
b061d5f1 | 451 | |
d7b43eaa RS |
452 | for (i = 0; i < nsyms; i++) { |
453 | register Elf32_Sym x; | |
b061d5f1 | 454 | |
d7b43eaa RS |
455 | if (rd_base[i].index == 0) |
456 | continue; | |
b061d5f1 | 457 | |
d7b43eaa RS |
458 | x = ds_base[rd_base[i].index]; |
459 | ||
460 | #if 0 | |
461 | fprintf (stderr, "Object inspected: %s, addr = %lx, shndx = %x", | |
462 | old + dynstr_section->s_scnptr + x.st_name, rd_base[i].addr, x.st_shndx); | |
463 | #endif | |
464 | ||
465 | ||
466 | if ((ELF32_ST_BIND (x.st_info) == STB_GLOBAL) | |
467 | && (x.st_shndx == 0) | |
468 | /* && (x.st_value == NULL) */ | |
469 | ) { | |
470 | /* OK, this is probably a reference to an object in a shared | |
471 | library, so copy the old value. This is done in several steps: | |
472 | 1. reladdr is the address of the location in question relative to | |
473 | the start of the data section, | |
474 | 2. oldref is the addr is the mapped in temacs executable, | |
475 | 3. newref is the address of the location in question in the | |
476 | undumped executable, | |
477 | 4. len is the size of the object reference in bytes -- | |
478 | currently only 4 (long) and 8 (quad) are supported. | |
479 | */ | |
2881ec96 | 480 | register unsigned long reladdr = (long)rd_base[i].addr - old_data_scnhdr.s_vaddr; |
d7b43eaa RS |
481 | char * oldref = old + old_data_scnhdr.s_scnptr + reladdr; |
482 | unsigned long newref = aout.tsize + reladdr; | |
483 | int len; | |
484 | ||
485 | #if 0 | |
486 | fprintf (stderr, "...relocated\n"); | |
487 | #endif | |
488 | ||
489 | if (rd_base[i].type == R_REFLONG) | |
490 | len = 4; | |
491 | else if (rd_base[i].type == R_REFQUAD) | |
492 | len = 8; | |
493 | else | |
494 | fatal_unexec ("unrecognized relocation type in .dyn.rel section (symbol #%d)", i); | |
495 | ||
496 | SEEK (new, newref, "seeking to dynamic symbol in %s", new_name); | |
497 | WRITE (new, oldref, len, "writing old dynrel info in %s", new_name); | |
b061d5f1 RS |
498 | } |
499 | ||
d7b43eaa RS |
500 | #if 0 |
501 | else | |
502 | fprintf (stderr, "...not relocated\n"); | |
503 | #endif | |
504 | ||
505 | } | |
506 | ||
61e63089 | 507 | #endif /* not __linux__ and not __NetBSD__ and not __OpenBSD__ */ |
b061d5f1 RS |
508 | } |
509 | ||
b061d5f1 RS |
510 | \f |
511 | /* | |
512 | * mark_x | |
513 | * | |
514 | * After successfully building the new a.out, mark it executable | |
515 | */ | |
516 | ||
517 | static void | |
518 | mark_x (name) | |
519 | char *name; | |
520 | { | |
521 | struct stat sbuf; | |
522 | int um = umask (777); | |
523 | umask (um); | |
524 | if (stat (name, &sbuf) < 0) | |
525 | fatal_unexec ("getting protection on %s", name); | |
526 | sbuf.st_mode |= 0111 & ~um; | |
527 | if (chmod (name, sbuf.st_mode) < 0) | |
528 | fatal_unexec ("setting protection on %s", name); | |
529 | } | |
530 | ||
531 | static void | |
a084ed10 RS |
532 | fatal_unexec (s, arg) |
533 | char *s; | |
534 | char *arg; | |
b061d5f1 | 535 | { |
b061d5f1 RS |
536 | if (errno == EEOF) |
537 | fputs ("unexec: unexpected end of file, ", stderr); | |
538 | else | |
539 | fprintf (stderr, "unexec: %s, ", strerror (errno)); | |
a084ed10 | 540 | fprintf (stderr, s, arg); |
b061d5f1 RS |
541 | fputs (".\n", stderr); |
542 | exit (1); | |
543 | } |