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Add support for large files, 64-bit Solaris, system locale codings.
[bpt/emacs.git] / src / unexelf.c
1 /* Copyright (C) 1985, 1986, 1987, 1988, 1990, 1992, 1999
2 Free Software Foundation, Inc.
3
4 This file is part of GNU Emacs.
5
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA.
20
21 In other words, you are welcome to use, share and improve this program.
22 You are forbidden to forbid anyone else to use, share and improve
23 what you give them. Help stamp out software-hoarding! */
24
25
26 /*
27 * unexec.c - Convert a running program into an a.out file.
28 *
29 * Author: Spencer W. Thomas
30 * Computer Science Dept.
31 * University of Utah
32 * Date: Tue Mar 2 1982
33 * Modified heavily since then.
34 *
35 * Synopsis:
36 * unexec (new_name, old_name, data_start, bss_start, entry_address)
37 * char *new_name, *old_name;
38 * unsigned data_start, bss_start, entry_address;
39 *
40 * Takes a snapshot of the program and makes an a.out format file in the
41 * file named by the string argument new_name.
42 * If old_name is non-NULL, the symbol table will be taken from the given file.
43 * On some machines, an existing old_name file is required.
44 *
45 * The boundaries within the a.out file may be adjusted with the data_start
46 * and bss_start arguments. Either or both may be given as 0 for defaults.
47 *
48 * Data_start gives the boundary between the text segment and the data
49 * segment of the program. The text segment can contain shared, read-only
50 * program code and literal data, while the data segment is always unshared
51 * and unprotected. Data_start gives the lowest unprotected address.
52 * The value you specify may be rounded down to a suitable boundary
53 * as required by the machine you are using.
54 *
55 * Specifying zero for data_start means the boundary between text and data
56 * should not be the same as when the program was loaded.
57 * If NO_REMAP is defined, the argument data_start is ignored and the
58 * segment boundaries are never changed.
59 *
60 * Bss_start indicates how much of the data segment is to be saved in the
61 * a.out file and restored when the program is executed. It gives the lowest
62 * unsaved address, and is rounded up to a page boundary. The default when 0
63 * is given assumes that the entire data segment is to be stored, including
64 * the previous data and bss as well as any additional storage allocated with
65 * break (2).
66 *
67 * The new file is set up to start at entry_address.
68 *
69 * If you make improvements I'd like to get them too.
70 * harpo!utah-cs!thomas, thomas@Utah-20
71 *
72 */
73
74 /* Even more heavily modified by james@bigtex.cactus.org of Dell Computer Co.
75 * ELF support added.
76 *
77 * Basic theory: the data space of the running process needs to be
78 * dumped to the output file. Normally we would just enlarge the size
79 * of .data, scooting everything down. But we can't do that in ELF,
80 * because there is often something between the .data space and the
81 * .bss space.
82 *
83 * In the temacs dump below, notice that the Global Offset Table
84 * (.got) and the Dynamic link data (.dynamic) come between .data1 and
85 * .bss. It does not work to overlap .data with these fields.
86 *
87 * The solution is to create a new .data segment. This segment is
88 * filled with data from the current process. Since the contents of
89 * various sections refer to sections by index, the new .data segment
90 * is made the last in the table to avoid changing any existing index.
91
92 * This is an example of how the section headers are changed. "Addr"
93 * is a process virtual address. "Offset" is a file offset.
94
95 raid:/nfs/raid/src/dist-18.56/src> dump -h temacs
96
97 temacs:
98
99 **** SECTION HEADER TABLE ****
100 [No] Type Flags Addr Offset Size Name
101 Link Info Adralgn Entsize
102
103 [1] 1 2 0x80480d4 0xd4 0x13 .interp
104 0 0 0x1 0
105
106 [2] 5 2 0x80480e8 0xe8 0x388 .hash
107 3 0 0x4 0x4
108
109 [3] 11 2 0x8048470 0x470 0x7f0 .dynsym
110 4 1 0x4 0x10
111
112 [4] 3 2 0x8048c60 0xc60 0x3ad .dynstr
113 0 0 0x1 0
114
115 [5] 9 2 0x8049010 0x1010 0x338 .rel.plt
116 3 7 0x4 0x8
117
118 [6] 1 6 0x8049348 0x1348 0x3 .init
119 0 0 0x4 0
120
121 [7] 1 6 0x804934c 0x134c 0x680 .plt
122 0 0 0x4 0x4
123
124 [8] 1 6 0x80499cc 0x19cc 0x3c56f .text
125 0 0 0x4 0
126
127 [9] 1 6 0x8085f3c 0x3df3c 0x3 .fini
128 0 0 0x4 0
129
130 [10] 1 2 0x8085f40 0x3df40 0x69c .rodata
131 0 0 0x4 0
132
133 [11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1
134 0 0 0x4 0
135
136 [12] 1 3 0x8088330 0x3f330 0x20afc .data
137 0 0 0x4 0
138
139 [13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1
140 0 0 0x4 0
141
142 [14] 1 3 0x80a96cc 0x606cc 0x1a8 .got
143 0 0 0x4 0x4
144
145 [15] 6 3 0x80a9874 0x60874 0x80 .dynamic
146 4 0 0x4 0x8
147
148 [16] 8 3 0x80a98f4 0x608f4 0x449c .bss
149 0 0 0x4 0
150
151 [17] 2 0 0 0x608f4 0x9b90 .symtab
152 18 371 0x4 0x10
153
154 [18] 3 0 0 0x6a484 0x8526 .strtab
155 0 0 0x1 0
156
157 [19] 3 0 0 0x729aa 0x93 .shstrtab
158 0 0 0x1 0
159
160 [20] 1 0 0 0x72a3d 0x68b7 .comment
161 0 0 0x1 0
162
163 raid:/nfs/raid/src/dist-18.56/src> dump -h xemacs
164
165 xemacs:
166
167 **** SECTION HEADER TABLE ****
168 [No] Type Flags Addr Offset Size Name
169 Link Info Adralgn Entsize
170
171 [1] 1 2 0x80480d4 0xd4 0x13 .interp
172 0 0 0x1 0
173
174 [2] 5 2 0x80480e8 0xe8 0x388 .hash
175 3 0 0x4 0x4
176
177 [3] 11 2 0x8048470 0x470 0x7f0 .dynsym
178 4 1 0x4 0x10
179
180 [4] 3 2 0x8048c60 0xc60 0x3ad .dynstr
181 0 0 0x1 0
182
183 [5] 9 2 0x8049010 0x1010 0x338 .rel.plt
184 3 7 0x4 0x8
185
186 [6] 1 6 0x8049348 0x1348 0x3 .init
187 0 0 0x4 0
188
189 [7] 1 6 0x804934c 0x134c 0x680 .plt
190 0 0 0x4 0x4
191
192 [8] 1 6 0x80499cc 0x19cc 0x3c56f .text
193 0 0 0x4 0
194
195 [9] 1 6 0x8085f3c 0x3df3c 0x3 .fini
196 0 0 0x4 0
197
198 [10] 1 2 0x8085f40 0x3df40 0x69c .rodata
199 0 0 0x4 0
200
201 [11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1
202 0 0 0x4 0
203
204 [12] 1 3 0x8088330 0x3f330 0x20afc .data
205 0 0 0x4 0
206
207 [13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1
208 0 0 0x4 0
209
210 [14] 1 3 0x80a96cc 0x606cc 0x1a8 .got
211 0 0 0x4 0x4
212
213 [15] 6 3 0x80a9874 0x60874 0x80 .dynamic
214 4 0 0x4 0x8
215
216 [16] 8 3 0x80c6800 0x7d800 0 .bss
217 0 0 0x4 0
218
219 [17] 2 0 0 0x7d800 0x9b90 .symtab
220 18 371 0x4 0x10
221
222 [18] 3 0 0 0x87390 0x8526 .strtab
223 0 0 0x1 0
224
225 [19] 3 0 0 0x8f8b6 0x93 .shstrtab
226 0 0 0x1 0
227
228 [20] 1 0 0 0x8f949 0x68b7 .comment
229 0 0 0x1 0
230
231 [21] 1 3 0x80a98f4 0x608f4 0x1cf0c .data
232 0 0 0x4 0
233
234 * This is an example of how the file header is changed. "Shoff" is
235 * the section header offset within the file. Since that table is
236 * after the new .data section, it is moved. "Shnum" is the number of
237 * sections, which we increment.
238 *
239 * "Phoff" is the file offset to the program header. "Phentsize" and
240 * "Shentsz" are the program and section header entries sizes respectively.
241 * These can be larger than the apparent struct sizes.
242
243 raid:/nfs/raid/src/dist-18.56/src> dump -f temacs
244
245 temacs:
246
247 **** ELF HEADER ****
248 Class Data Type Machine Version
249 Entry Phoff Shoff Flags Ehsize
250 Phentsize Phnum Shentsz Shnum Shstrndx
251
252 1 1 2 3 1
253 0x80499cc 0x34 0x792f4 0 0x34
254 0x20 5 0x28 21 19
255
256 raid:/nfs/raid/src/dist-18.56/src> dump -f xemacs
257
258 xemacs:
259
260 **** ELF HEADER ****
261 Class Data Type Machine Version
262 Entry Phoff Shoff Flags Ehsize
263 Phentsize Phnum Shentsz Shnum Shstrndx
264
265 1 1 2 3 1
266 0x80499cc 0x34 0x96200 0 0x34
267 0x20 5 0x28 22 19
268
269 * These are the program headers. "Offset" is the file offset to the
270 * segment. "Vaddr" is the memory load address. "Filesz" is the
271 * segment size as it appears in the file, and "Memsz" is the size in
272 * memory. Below, the third segment is the code and the fourth is the
273 * data: the difference between Filesz and Memsz is .bss
274
275 raid:/nfs/raid/src/dist-18.56/src> dump -o temacs
276
277 temacs:
278 ***** PROGRAM EXECUTION HEADER *****
279 Type Offset Vaddr Paddr
280 Filesz Memsz Flags Align
281
282 6 0x34 0x8048034 0
283 0xa0 0xa0 5 0
284
285 3 0xd4 0 0
286 0x13 0 4 0
287
288 1 0x34 0x8048034 0
289 0x3f2f9 0x3f2f9 5 0x1000
290
291 1 0x3f330 0x8088330 0
292 0x215c4 0x25a60 7 0x1000
293
294 2 0x60874 0x80a9874 0
295 0x80 0 7 0
296
297 raid:/nfs/raid/src/dist-18.56/src> dump -o xemacs
298
299 xemacs:
300 ***** PROGRAM EXECUTION HEADER *****
301 Type Offset Vaddr Paddr
302 Filesz Memsz Flags Align
303
304 6 0x34 0x8048034 0
305 0xa0 0xa0 5 0
306
307 3 0xd4 0 0
308 0x13 0 4 0
309
310 1 0x34 0x8048034 0
311 0x3f2f9 0x3f2f9 5 0x1000
312
313 1 0x3f330 0x8088330 0
314 0x3e4d0 0x3e4d0 7 0x1000
315
316 2 0x60874 0x80a9874 0
317 0x80 0 7 0
318
319
320 */
321 \f
322 /* Modified by wtien@urbana.mcd.mot.com of Motorola Inc.
323 *
324 * The above mechanism does not work if the unexeced ELF file is being
325 * re-layout by other applications (such as `strip'). All the applications
326 * that re-layout the internal of ELF will layout all sections in ascending
327 * order of their file offsets. After the re-layout, the data2 section will
328 * still be the LAST section in the section header vector, but its file offset
329 * is now being pushed far away down, and causes part of it not to be mapped
330 * in (ie. not covered by the load segment entry in PHDR vector), therefore
331 * causes the new binary to fail.
332 *
333 * The solution is to modify the unexec algorithm to insert the new data2
334 * section header right before the new bss section header, so their file
335 * offsets will be in the ascending order. Since some of the section's (all
336 * sections AFTER the bss section) indexes are now changed, we also need to
337 * modify some fields to make them point to the right sections. This is done
338 * by macro PATCH_INDEX. All the fields that need to be patched are:
339 *
340 * 1. ELF header e_shstrndx field.
341 * 2. section header sh_link and sh_info field.
342 * 3. symbol table entry st_shndx field.
343 *
344 * The above example now should look like:
345
346 **** SECTION HEADER TABLE ****
347 [No] Type Flags Addr Offset Size Name
348 Link Info Adralgn Entsize
349
350 [1] 1 2 0x80480d4 0xd4 0x13 .interp
351 0 0 0x1 0
352
353 [2] 5 2 0x80480e8 0xe8 0x388 .hash
354 3 0 0x4 0x4
355
356 [3] 11 2 0x8048470 0x470 0x7f0 .dynsym
357 4 1 0x4 0x10
358
359 [4] 3 2 0x8048c60 0xc60 0x3ad .dynstr
360 0 0 0x1 0
361
362 [5] 9 2 0x8049010 0x1010 0x338 .rel.plt
363 3 7 0x4 0x8
364
365 [6] 1 6 0x8049348 0x1348 0x3 .init
366 0 0 0x4 0
367
368 [7] 1 6 0x804934c 0x134c 0x680 .plt
369 0 0 0x4 0x4
370
371 [8] 1 6 0x80499cc 0x19cc 0x3c56f .text
372 0 0 0x4 0
373
374 [9] 1 6 0x8085f3c 0x3df3c 0x3 .fini
375 0 0 0x4 0
376
377 [10] 1 2 0x8085f40 0x3df40 0x69c .rodata
378 0 0 0x4 0
379
380 [11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1
381 0 0 0x4 0
382
383 [12] 1 3 0x8088330 0x3f330 0x20afc .data
384 0 0 0x4 0
385
386 [13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1
387 0 0 0x4 0
388
389 [14] 1 3 0x80a96cc 0x606cc 0x1a8 .got
390 0 0 0x4 0x4
391
392 [15] 6 3 0x80a9874 0x60874 0x80 .dynamic
393 4 0 0x4 0x8
394
395 [16] 1 3 0x80a98f4 0x608f4 0x1cf0c .data
396 0 0 0x4 0
397
398 [17] 8 3 0x80c6800 0x7d800 0 .bss
399 0 0 0x4 0
400
401 [18] 2 0 0 0x7d800 0x9b90 .symtab
402 19 371 0x4 0x10
403
404 [19] 3 0 0 0x87390 0x8526 .strtab
405 0 0 0x1 0
406
407 [20] 3 0 0 0x8f8b6 0x93 .shstrtab
408 0 0 0x1 0
409
410 [21] 1 0 0 0x8f949 0x68b7 .comment
411 0 0 0x1 0
412
413 */
414 \f
415 #ifndef emacs
416 #define fatal(a, b, c) fprintf (stderr, a, b, c), exit (1)
417 #else
418 #include <config.h>
419 extern void fatal (char *, ...);
420 #endif
421
422 #include <sys/types.h>
423 #include <stdio.h>
424 #include <sys/stat.h>
425 #include <memory.h>
426 #include <string.h>
427 #include <errno.h>
428 #include <unistd.h>
429 #include <fcntl.h>
430 #if !defined (__NetBSD__) && !defined (__OpenBSD__)
431 #include <elf.h>
432 #endif
433 #include <sys/mman.h>
434 #if defined (__sony_news) && defined (_SYSTYPE_SYSV)
435 #include <sys/elf_mips.h>
436 #include <sym.h>
437 #endif /* __sony_news && _SYSTYPE_SYSV */
438 #if __sgi
439 #include <sym.h> /* for HDRR declaration */
440 #endif /* __sgi */
441
442 #if defined (__alpha__) && !defined (__NetBSD__) && !defined (__OpenBSD__)
443 /* Declare COFF debugging symbol table. This used to be in
444 /usr/include/sym.h, but this file is no longer included in Red Hat
445 5.0 and presumably in any other glibc 2.x based distribution. */
446 typedef struct {
447 short magic;
448 short vstamp;
449 int ilineMax;
450 int idnMax;
451 int ipdMax;
452 int isymMax;
453 int ioptMax;
454 int iauxMax;
455 int issMax;
456 int issExtMax;
457 int ifdMax;
458 int crfd;
459 int iextMax;
460 long cbLine;
461 long cbLineOffset;
462 long cbDnOffset;
463 long cbPdOffset;
464 long cbSymOffset;
465 long cbOptOffset;
466 long cbAuxOffset;
467 long cbSsOffset;
468 long cbSsExtOffset;
469 long cbFdOffset;
470 long cbRfdOffset;
471 long cbExtOffset;
472 } HDRR, *pHDRR;
473 #define cbHDRR sizeof(HDRR)
474 #define hdrNil ((pHDRR)0)
475 #endif
476
477 #ifdef __NetBSD__
478 /*
479 * NetBSD does not have normal-looking user-land ELF support.
480 */
481 # ifdef __alpha__
482 # define ELFSIZE 64
483 # else
484 # define ELFSIZE 32
485 # endif
486 # include <sys/exec_elf.h>
487
488 # define PT_LOAD Elf_pt_load
489 # define SHT_SYMTAB Elf_sht_symtab
490 # define SHT_DYNSYM Elf_sht_dynsym
491 # define SHT_NULL Elf_sht_null
492 # define SHT_NOBITS Elf_sht_nobits
493 # define SHT_REL Elf_sht_rel
494 # define SHT_RELA Elf_sht_rela
495
496 # define SHN_UNDEF Elf_eshn_undefined
497 # define SHN_ABS Elf_eshn_absolute
498 # define SHN_COMMON Elf_eshn_common
499
500 /*
501 * The magic of picking the right size types is handled by the ELFSIZE
502 * definition above.
503 */
504 # ifdef __STDC__
505 # define ElfW(type) Elf_##type
506 # else
507 # define ElfW(type) Elf_/**/type
508 # endif
509
510 # ifdef __alpha__
511 # include <sys/exec_ecoff.h>
512 # define HDRR struct ecoff_symhdr
513 # define pHDRR HDRR *
514 # endif
515 #endif /* __NetBSD__ */
516
517 #ifdef __OpenBSD__
518 # include <sys/exec_elf.h>
519 #endif
520
521 #if __GNU_LIBRARY__ - 0 >= 6
522 # include <link.h> /* get ElfW etc */
523 #endif
524
525 #ifndef ElfW
526 # ifdef __STDC__
527 # define ElfBitsW(bits, type) Elf##bits##_##type
528 # else
529 # define ElfBitsW(bits, type) Elf/**/bits/**/_/**/type
530 # endif
531 # ifdef _LP64
532 # define ELFSIZE 64
533 # else
534 # define ELFSIZE 32
535 # endif
536 /* This macro expands `bits' before invoking ElfBitsW. */
537 # define ElfExpandBitsW(bits, type) ElfBitsW (bits, type)
538 # define ElfW(type) ElfExpandBitsW (ELFSIZE, type)
539 #endif
540
541 #ifndef ELF_BSS_SECTION_NAME
542 #define ELF_BSS_SECTION_NAME ".bss"
543 #endif
544
545 /* Get the address of a particular section or program header entry,
546 * accounting for the size of the entries.
547 */
548 /*
549 On PPC Reference Platform running Solaris 2.5.1
550 the plt section is also of type NOBI like the bss section.
551 (not really stored) and therefore sections after the bss
552 section start at the plt offset. The plt section is always
553 the one just before the bss section.
554 Thus, we modify the test from
555 if (NEW_SECTION_H (nn).sh_offset >= new_data2_offset)
556 to
557 if (NEW_SECTION_H (nn).sh_offset >=
558 OLD_SECTION_H (old_bss_index-1).sh_offset)
559 This is just a hack. We should put the new data section
560 before the .plt section.
561 And we should not have this routine at all but use
562 the libelf library to read the old file and create the new
563 file.
564 The changed code is minimal and depends on prep set in m/prep.h
565 Erik Deumens
566 Quantum Theory Project
567 University of Florida
568 deumens@qtp.ufl.edu
569 Apr 23, 1996
570 */
571
572 #define OLD_SECTION_H(n) \
573 (*(ElfW(Shdr) *) ((byte *) old_section_h + old_file_h->e_shentsize * (n)))
574 #define NEW_SECTION_H(n) \
575 (*(ElfW(Shdr) *) ((byte *) new_section_h + new_file_h->e_shentsize * (n)))
576 #define OLD_PROGRAM_H(n) \
577 (*(ElfW(Phdr) *) ((byte *) old_program_h + old_file_h->e_phentsize * (n)))
578 #define NEW_PROGRAM_H(n) \
579 (*(ElfW(Phdr) *) ((byte *) new_program_h + new_file_h->e_phentsize * (n)))
580
581 #define PATCH_INDEX(n) \
582 do { \
583 if ((int) (n) >= old_bss_index) \
584 (n)++; } while (0)
585 typedef unsigned char byte;
586
587 /* Round X up to a multiple of Y. */
588
589 static ElfW(Addr)
590 round_up (x, y)
591 ElfW(Addr) x, y;
592 {
593 int rem = x % y;
594 if (rem == 0)
595 return x;
596 return x - rem + y;
597 }
598
599 /* ****************************************************************
600 * unexec
601 *
602 * driving logic.
603 *
604 * In ELF, this works by replacing the old .bss section with a new
605 * .data section, and inserting an empty .bss immediately afterwards.
606 *
607 */
608 void
609 unexec (new_name, old_name, data_start, bss_start, entry_address)
610 char *new_name, *old_name;
611 unsigned data_start, bss_start, entry_address;
612 {
613 int new_file, old_file, new_file_size;
614
615 /* Pointers to the base of the image of the two files. */
616 caddr_t old_base, new_base;
617
618 /* Pointers to the file, program and section headers for the old and new
619 * files.
620 */
621 ElfW(Ehdr) *old_file_h, *new_file_h;
622 ElfW(Phdr) *old_program_h, *new_program_h;
623 ElfW(Shdr) *old_section_h, *new_section_h;
624
625 /* Point to the section name table in the old file */
626 char *old_section_names;
627
628 ElfW(Addr) old_bss_addr, new_bss_addr;
629 ElfW(Word) old_bss_size, new_data2_size;
630 ElfW(Off) new_data2_offset;
631 ElfW(Addr) new_data2_addr;
632
633 int n, nn, old_bss_index, old_data_index, new_data2_index;
634 int old_sbss_index, old_mdebug_index;
635 struct stat stat_buf;
636
637 /* Open the old file & map it into the address space. */
638
639 old_file = open (old_name, O_RDONLY);
640
641 if (old_file < 0)
642 fatal ("Can't open %s for reading: errno %d\n", old_name, errno);
643
644 if (fstat (old_file, &stat_buf) == -1)
645 fatal ("Can't fstat (%s): errno %d\n", old_name, errno);
646
647 old_base = mmap ((caddr_t) 0, stat_buf.st_size, PROT_READ, MAP_SHARED,
648 old_file, 0);
649
650 if (old_base == (caddr_t) -1)
651 fatal ("Can't mmap (%s): errno %d\n", old_name, errno);
652
653 #ifdef DEBUG
654 fprintf (stderr, "mmap (%s, %x) -> %x\n", old_name, stat_buf.st_size,
655 old_base);
656 #endif
657
658 /* Get pointers to headers & section names */
659
660 old_file_h = (ElfW(Ehdr) *) old_base;
661 old_program_h = (ElfW(Phdr) *) ((byte *) old_base + old_file_h->e_phoff);
662 old_section_h = (ElfW(Shdr) *) ((byte *) old_base + old_file_h->e_shoff);
663 old_section_names = (char *) old_base
664 + OLD_SECTION_H (old_file_h->e_shstrndx).sh_offset;
665
666 /* Find the old .bss section. Figure out parameters of the new
667 * data2 and bss sections.
668 */
669
670 for (old_bss_index = 1; old_bss_index < (int) old_file_h->e_shnum;
671 old_bss_index++)
672 {
673 #ifdef DEBUG
674 fprintf (stderr, "Looking for .bss - found %s\n",
675 old_section_names + OLD_SECTION_H (old_bss_index).sh_name);
676 #endif
677 if (!strcmp (old_section_names + OLD_SECTION_H (old_bss_index).sh_name,
678 ELF_BSS_SECTION_NAME))
679 break;
680 }
681 if (old_bss_index == old_file_h->e_shnum)
682 fatal ("Can't find .bss in %s.\n", old_name, 0);
683
684 for (old_sbss_index = 1; old_sbss_index < (int) old_file_h->e_shnum;
685 old_sbss_index++)
686 {
687 #ifdef DEBUG
688 fprintf (stderr, "Looking for .sbss - found %s\n",
689 old_section_names + OLD_SECTION_H (old_sbss_index).sh_name);
690 #endif
691 if (!strcmp (old_section_names + OLD_SECTION_H (old_sbss_index).sh_name,
692 ".sbss"))
693 break;
694 }
695 if (old_sbss_index == old_file_h->e_shnum)
696 {
697 old_sbss_index = -1;
698 old_bss_addr = OLD_SECTION_H(old_bss_index).sh_addr;
699 old_bss_size = OLD_SECTION_H(old_bss_index).sh_size;
700 new_data2_offset = OLD_SECTION_H(old_bss_index).sh_offset;
701 new_data2_index = old_bss_index;
702 }
703 else
704 {
705 old_bss_addr = OLD_SECTION_H(old_sbss_index).sh_addr;
706 old_bss_size = OLD_SECTION_H(old_bss_index).sh_size
707 + OLD_SECTION_H(old_sbss_index).sh_size;
708 new_data2_offset = OLD_SECTION_H(old_sbss_index).sh_offset;
709 new_data2_index = old_sbss_index;
710 }
711
712 for (old_mdebug_index = 1; old_mdebug_index < (int) old_file_h->e_shnum;
713 old_mdebug_index++)
714 {
715 #ifdef DEBUG
716 fprintf (stderr, "Looking for .mdebug - found %s\n",
717 old_section_names + OLD_SECTION_H (old_mdebug_index).sh_name);
718 #endif
719 if (!strcmp (old_section_names + OLD_SECTION_H (old_mdebug_index).sh_name,
720 ".mdebug"))
721 break;
722 }
723 if (old_mdebug_index == old_file_h->e_shnum)
724 old_mdebug_index = 0;
725
726 #if defined (emacs) || !defined (DEBUG)
727 new_bss_addr = (ElfW(Addr)) sbrk (0);
728 #else
729 new_bss_addr = old_bss_addr + old_bss_size + 0x1234;
730 #endif
731 new_data2_addr = old_bss_addr;
732 new_data2_size = new_bss_addr - old_bss_addr;
733
734 #ifdef DEBUG
735 fprintf (stderr, "old_bss_index %d\n", old_bss_index);
736 fprintf (stderr, "old_bss_addr %x\n", old_bss_addr);
737 fprintf (stderr, "old_bss_size %x\n", old_bss_size);
738 fprintf (stderr, "new_bss_addr %x\n", new_bss_addr);
739 fprintf (stderr, "new_data2_addr %x\n", new_data2_addr);
740 fprintf (stderr, "new_data2_size %x\n", new_data2_size);
741 fprintf (stderr, "new_data2_offset %x\n", new_data2_offset);
742 #endif
743
744 if ((unsigned) new_bss_addr < (unsigned) old_bss_addr + old_bss_size)
745 fatal (".bss shrank when undumping???\n", 0, 0);
746
747 /* Set the output file to the right size and mmap it. Set
748 * pointers to various interesting objects. stat_buf still has
749 * old_file data.
750 */
751
752 new_file = open (new_name, O_RDWR | O_CREAT, 0666);
753 if (new_file < 0)
754 fatal ("Can't creat (%s): errno %d\n", new_name, errno);
755
756 new_file_size = stat_buf.st_size + old_file_h->e_shentsize + new_data2_size;
757
758 if (ftruncate (new_file, new_file_size))
759 fatal ("Can't ftruncate (%s): errno %d\n", new_name, errno);
760
761 #ifdef UNEXEC_USE_MAP_PRIVATE
762 new_base = mmap ((caddr_t) 0, new_file_size, PROT_READ | PROT_WRITE,
763 MAP_PRIVATE, new_file, 0);
764 #else
765 new_base = mmap ((caddr_t) 0, new_file_size, PROT_READ | PROT_WRITE,
766 MAP_SHARED, new_file, 0);
767 #endif
768
769 if (new_base == (caddr_t) -1)
770 fatal ("Can't mmap (%s): errno %d\n", new_name, errno);
771
772 new_file_h = (ElfW(Ehdr) *) new_base;
773 new_program_h = (ElfW(Phdr) *) ((byte *) new_base + old_file_h->e_phoff);
774 new_section_h = (ElfW(Shdr) *)
775 ((byte *) new_base + old_file_h->e_shoff + new_data2_size);
776
777 /* Make our new file, program and section headers as copies of the
778 * originals.
779 */
780
781 memcpy (new_file_h, old_file_h, old_file_h->e_ehsize);
782 memcpy (new_program_h, old_program_h,
783 old_file_h->e_phnum * old_file_h->e_phentsize);
784
785 /* Modify the e_shstrndx if necessary. */
786 PATCH_INDEX (new_file_h->e_shstrndx);
787
788 /* Fix up file header. We'll add one section. Section header is
789 * further away now.
790 */
791
792 new_file_h->e_shoff += new_data2_size;
793 new_file_h->e_shnum += 1;
794
795 #ifdef DEBUG
796 fprintf (stderr, "Old section offset %x\n", old_file_h->e_shoff);
797 fprintf (stderr, "Old section count %d\n", old_file_h->e_shnum);
798 fprintf (stderr, "New section offset %x\n", new_file_h->e_shoff);
799 fprintf (stderr, "New section count %d\n", new_file_h->e_shnum);
800 #endif
801
802 /* Fix up a new program header. Extend the writable data segment so
803 * that the bss area is covered too. Find that segment by looking
804 * for a segment that ends just before the .bss area. Make sure
805 * that no segments are above the new .data2. Put a loop at the end
806 * to adjust the offset and address of any segment that is above
807 * data2, just in case we decide to allow this later.
808 */
809
810 for (n = new_file_h->e_phnum - 1; n >= 0; n--)
811 {
812 /* Compute maximum of all requirements for alignment of section. */
813 ElfW(Word) alignment = (NEW_PROGRAM_H (n)).p_align;
814 if ((OLD_SECTION_H (old_bss_index)).sh_addralign > alignment)
815 alignment = OLD_SECTION_H (old_bss_index).sh_addralign;
816
817 #ifdef __mips
818 /* According to r02kar@x4u2.desy.de (Karsten Kuenne)
819 and oliva@gnu.org (Alexandre Oliva), on IRIX 5.2, we
820 always get "Program segment above .bss" when dumping
821 when the executable doesn't have an sbss section. */
822 if (old_sbss_index != -1)
823 #endif /* __mips */
824 if (NEW_PROGRAM_H (n).p_vaddr + NEW_PROGRAM_H (n).p_filesz
825 > (old_sbss_index == -1
826 ? old_bss_addr
827 : round_up (old_bss_addr, alignment)))
828 fatal ("Program segment above .bss in %s\n", old_name, 0);
829
830 if (NEW_PROGRAM_H (n).p_type == PT_LOAD
831 && (round_up ((NEW_PROGRAM_H (n)).p_vaddr
832 + (NEW_PROGRAM_H (n)).p_filesz,
833 alignment)
834 == round_up (old_bss_addr, alignment)))
835 break;
836 }
837 if (n < 0)
838 fatal ("Couldn't find segment next to .bss in %s\n", old_name, 0);
839
840 /* Make sure that the size includes any padding before the old .bss
841 section. */
842 NEW_PROGRAM_H (n).p_filesz = new_bss_addr - NEW_PROGRAM_H (n).p_vaddr;
843 NEW_PROGRAM_H (n).p_memsz = NEW_PROGRAM_H (n).p_filesz;
844
845 #if 0 /* Maybe allow section after data2 - does this ever happen? */
846 for (n = new_file_h->e_phnum - 1; n >= 0; n--)
847 {
848 if (NEW_PROGRAM_H (n).p_vaddr
849 && NEW_PROGRAM_H (n).p_vaddr >= new_data2_addr)
850 NEW_PROGRAM_H (n).p_vaddr += new_data2_size - old_bss_size;
851
852 if (NEW_PROGRAM_H (n).p_offset >= new_data2_offset)
853 NEW_PROGRAM_H (n).p_offset += new_data2_size;
854 }
855 #endif
856
857 /* Fix up section headers based on new .data2 section. Any section
858 * whose offset or virtual address is after the new .data2 section
859 * gets its value adjusted. .bss size becomes zero and new address
860 * is set. data2 section header gets added by copying the existing
861 * .data header and modifying the offset, address and size.
862 */
863 for (old_data_index = 1; old_data_index < (int) old_file_h->e_shnum;
864 old_data_index++)
865 if (!strcmp (old_section_names + OLD_SECTION_H (old_data_index).sh_name,
866 ".data"))
867 break;
868 if (old_data_index == old_file_h->e_shnum)
869 fatal ("Can't find .data in %s.\n", old_name, 0);
870
871 /* Walk through all section headers, insert the new data2 section right
872 before the new bss section. */
873 for (n = 1, nn = 1; n < (int) old_file_h->e_shnum; n++, nn++)
874 {
875 caddr_t src;
876 /* If it is (s)bss section, insert the new data2 section before it. */
877 /* new_data2_index is the index of either old_sbss or old_bss, that was
878 chosen as a section for new_data2. */
879 if (n == new_data2_index)
880 {
881 /* Steal the data section header for this data2 section. */
882 memcpy (&NEW_SECTION_H (nn), &OLD_SECTION_H (old_data_index),
883 new_file_h->e_shentsize);
884
885 NEW_SECTION_H (nn).sh_addr = new_data2_addr;
886 NEW_SECTION_H (nn).sh_offset = new_data2_offset;
887 NEW_SECTION_H (nn).sh_size = new_data2_size;
888 /* Use the bss section's alignment. This will assure that the
889 new data2 section always be placed in the same spot as the old
890 bss section by any other application. */
891 NEW_SECTION_H (nn).sh_addralign = OLD_SECTION_H (n).sh_addralign;
892
893 /* Now copy over what we have in the memory now. */
894 memcpy (NEW_SECTION_H (nn).sh_offset + new_base,
895 (caddr_t) OLD_SECTION_H (n).sh_addr,
896 new_data2_size);
897 nn++;
898 }
899
900 memcpy (&NEW_SECTION_H (nn), &OLD_SECTION_H (n),
901 old_file_h->e_shentsize);
902
903 if (n == old_bss_index
904 /* The new bss and sbss section's size is zero, and its file offset
905 and virtual address should be off by NEW_DATA2_SIZE. */
906 || n == old_sbss_index
907 )
908 {
909 /* NN should be `old_s?bss_index + 1' at this point. */
910 NEW_SECTION_H (nn).sh_offset =
911 NEW_SECTION_H (new_data2_index).sh_offset + new_data2_size;
912 NEW_SECTION_H (nn).sh_addr =
913 NEW_SECTION_H (new_data2_index).sh_addr + new_data2_size;
914 /* Let the new bss section address alignment be the same as the
915 section address alignment followed the old bss section, so
916 this section will be placed in exactly the same place. */
917 NEW_SECTION_H (nn).sh_addralign = OLD_SECTION_H (nn).sh_addralign;
918 NEW_SECTION_H (nn).sh_size = 0;
919 }
920 else
921 {
922 /* Any section that was original placed AFTER the bss
923 section should now be off by NEW_DATA2_SIZE. */
924 #ifdef SOLARIS_POWERPC
925 /* On PPC Reference Platform running Solaris 2.5.1
926 the plt section is also of type NOBI like the bss section.
927 (not really stored) and therefore sections after the bss
928 section start at the plt offset. The plt section is always
929 the one just before the bss section.
930 It would be better to put the new data section before
931 the .plt section, or use libelf instead.
932 Erik Deumens, deumens@qtp.ufl.edu. */
933 if (NEW_SECTION_H (nn).sh_offset
934 >= OLD_SECTION_H (old_bss_index-1).sh_offset)
935 NEW_SECTION_H (nn).sh_offset += new_data2_size;
936 #else
937 /* The idea of this is that the bss section's sh_offset
938 may need rounding up to compare with new_data2_offset.
939 So we cannot simply compare the sh_offset.
940 However, another small section could exist just before
941 the bss section, and we need to know that is before. */
942 if (round_up (NEW_SECTION_H (nn).sh_offset
943 + NEW_SECTION_H (nn).sh_size,
944 OLD_SECTION_H (old_bss_index).sh_addralign)
945 > new_data2_offset)
946 NEW_SECTION_H (nn).sh_offset += new_data2_size;
947 #endif
948 /* Any section that was originally placed after the section
949 header table should now be off by the size of one section
950 header table entry. */
951 if (NEW_SECTION_H (nn).sh_offset > new_file_h->e_shoff)
952 NEW_SECTION_H (nn).sh_offset += new_file_h->e_shentsize;
953 }
954
955 /* If any section hdr refers to the section after the new .data
956 section, make it refer to next one because we have inserted
957 a new section in between. */
958
959 PATCH_INDEX (NEW_SECTION_H (nn).sh_link);
960 /* For symbol tables, info is a symbol table index,
961 so don't change it. */
962 if (NEW_SECTION_H (nn).sh_type != SHT_SYMTAB
963 && NEW_SECTION_H (nn).sh_type != SHT_DYNSYM)
964 PATCH_INDEX (NEW_SECTION_H (nn).sh_info);
965
966 /* Now, start to copy the content of sections. */
967 if (NEW_SECTION_H (nn).sh_type == SHT_NULL
968 || NEW_SECTION_H (nn).sh_type == SHT_NOBITS)
969 continue;
970
971 /* Write out the sections. .data and .data1 (and data2, called
972 ".data" in the strings table) get copied from the current process
973 instead of the old file. */
974 if (!strcmp (old_section_names + NEW_SECTION_H (n).sh_name, ".data")
975 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
976 ".sdata")
977 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
978 ".lit4")
979 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
980 ".lit8")
981 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
982 ".got")
983 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
984 ".sdata1")
985 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
986 ".data1"))
987 src = (caddr_t) OLD_SECTION_H (n).sh_addr;
988 else
989 src = old_base + OLD_SECTION_H (n).sh_offset;
990
991 memcpy (NEW_SECTION_H (nn).sh_offset + new_base, src,
992 NEW_SECTION_H (nn).sh_size);
993
994 #ifdef __alpha__
995 /* Update Alpha COFF symbol table: */
996 if (strcmp (old_section_names + OLD_SECTION_H (n).sh_name, ".mdebug")
997 == 0)
998 {
999 pHDRR symhdr = (pHDRR) (NEW_SECTION_H (nn).sh_offset + new_base);
1000
1001 symhdr->cbLineOffset += new_data2_size;
1002 symhdr->cbDnOffset += new_data2_size;
1003 symhdr->cbPdOffset += new_data2_size;
1004 symhdr->cbSymOffset += new_data2_size;
1005 symhdr->cbOptOffset += new_data2_size;
1006 symhdr->cbAuxOffset += new_data2_size;
1007 symhdr->cbSsOffset += new_data2_size;
1008 symhdr->cbSsExtOffset += new_data2_size;
1009 symhdr->cbFdOffset += new_data2_size;
1010 symhdr->cbRfdOffset += new_data2_size;
1011 symhdr->cbExtOffset += new_data2_size;
1012 }
1013 #endif /* __alpha__ */
1014
1015 #if defined (__sony_news) && defined (_SYSTYPE_SYSV)
1016 if (NEW_SECTION_H (nn).sh_type == SHT_MIPS_DEBUG && old_mdebug_index)
1017 {
1018 int diff = NEW_SECTION_H(nn).sh_offset
1019 - OLD_SECTION_H(old_mdebug_index).sh_offset;
1020 HDRR *phdr = (HDRR *)(NEW_SECTION_H (nn).sh_offset + new_base);
1021
1022 if (diff)
1023 {
1024 phdr->cbLineOffset += diff;
1025 phdr->cbDnOffset += diff;
1026 phdr->cbPdOffset += diff;
1027 phdr->cbSymOffset += diff;
1028 phdr->cbOptOffset += diff;
1029 phdr->cbAuxOffset += diff;
1030 phdr->cbSsOffset += diff;
1031 phdr->cbSsExtOffset += diff;
1032 phdr->cbFdOffset += diff;
1033 phdr->cbRfdOffset += diff;
1034 phdr->cbExtOffset += diff;
1035 }
1036 }
1037 #endif /* __sony_news && _SYSTYPE_SYSV */
1038
1039 #if __sgi
1040 /* Adjust the HDRR offsets in .mdebug and copy the
1041 line data if it's in its usual 'hole' in the object.
1042 Makes the new file debuggable with dbx.
1043 patches up two problems: the absolute file offsets
1044 in the HDRR record of .mdebug (see /usr/include/syms.h), and
1045 the ld bug that gets the line table in a hole in the
1046 elf file rather than in the .mdebug section proper.
1047 David Anderson. davea@sgi.com Jan 16,1994. */
1048 if (n == old_mdebug_index)
1049 {
1050 #define MDEBUGADJUST(__ct,__fileaddr) \
1051 if (n_phdrr->__ct > 0) \
1052 { \
1053 n_phdrr->__fileaddr += movement; \
1054 }
1055
1056 HDRR * o_phdrr = (HDRR *)((byte *)old_base + OLD_SECTION_H (n).sh_offset);
1057 HDRR * n_phdrr = (HDRR *)((byte *)new_base + NEW_SECTION_H (nn).sh_offset);
1058 unsigned movement = new_data2_size;
1059
1060 MDEBUGADJUST (idnMax, cbDnOffset);
1061 MDEBUGADJUST (ipdMax, cbPdOffset);
1062 MDEBUGADJUST (isymMax, cbSymOffset);
1063 MDEBUGADJUST (ioptMax, cbOptOffset);
1064 MDEBUGADJUST (iauxMax, cbAuxOffset);
1065 MDEBUGADJUST (issMax, cbSsOffset);
1066 MDEBUGADJUST (issExtMax, cbSsExtOffset);
1067 MDEBUGADJUST (ifdMax, cbFdOffset);
1068 MDEBUGADJUST (crfd, cbRfdOffset);
1069 MDEBUGADJUST (iextMax, cbExtOffset);
1070 /* The Line Section, being possible off in a hole of the object,
1071 requires special handling. */
1072 if (n_phdrr->cbLine > 0)
1073 {
1074 if (o_phdrr->cbLineOffset > (OLD_SECTION_H (n).sh_offset
1075 + OLD_SECTION_H (n).sh_size))
1076 {
1077 /* line data is in a hole in elf. do special copy and adjust
1078 for this ld mistake.
1079 */
1080 n_phdrr->cbLineOffset += movement;
1081
1082 memcpy (n_phdrr->cbLineOffset + new_base,
1083 o_phdrr->cbLineOffset + old_base, n_phdrr->cbLine);
1084 }
1085 else
1086 {
1087 /* somehow line data is in .mdebug as it is supposed to be. */
1088 MDEBUGADJUST (cbLine, cbLineOffset);
1089 }
1090 }
1091 }
1092 #endif /* __sgi */
1093
1094 /* If it is the symbol table, its st_shndx field needs to be patched. */
1095 if (NEW_SECTION_H (nn).sh_type == SHT_SYMTAB
1096 || NEW_SECTION_H (nn).sh_type == SHT_DYNSYM)
1097 {
1098 ElfW(Shdr) *spt = &NEW_SECTION_H (nn);
1099 unsigned int num = spt->sh_size / spt->sh_entsize;
1100 ElfW(Sym) * sym = (ElfW(Sym) *) (NEW_SECTION_H (nn).sh_offset +
1101 new_base);
1102 for (; num--; sym++)
1103 {
1104 if ((sym->st_shndx == SHN_UNDEF)
1105 || (sym->st_shndx == SHN_ABS)
1106 || (sym->st_shndx == SHN_COMMON))
1107 continue;
1108
1109 PATCH_INDEX (sym->st_shndx);
1110 }
1111 }
1112 }
1113
1114 /* Update the symbol values of _edata and _end. */
1115 for (n = new_file_h->e_shnum - 1; n; n--)
1116 {
1117 byte *symnames;
1118 ElfW(Sym) *symp, *symendp;
1119
1120 if (NEW_SECTION_H (n).sh_type != SHT_DYNSYM
1121 && NEW_SECTION_H (n).sh_type != SHT_SYMTAB)
1122 continue;
1123
1124 symnames = ((byte *) new_base
1125 + NEW_SECTION_H (NEW_SECTION_H (n).sh_link).sh_offset);
1126 symp = (ElfW(Sym) *) (NEW_SECTION_H (n).sh_offset + new_base);
1127 symendp = (ElfW(Sym) *) ((byte *)symp + NEW_SECTION_H (n).sh_size);
1128
1129 for (; symp < symendp; symp ++)
1130 if (strcmp ((char *) (symnames + symp->st_name), "_end") == 0
1131 || strcmp ((char *) (symnames + symp->st_name), "end") == 0
1132 || strcmp ((char *) (symnames + symp->st_name), "_edata") == 0
1133 || strcmp ((char *) (symnames + symp->st_name), "edata") == 0)
1134 memcpy (&symp->st_value, &new_bss_addr, sizeof (new_bss_addr));
1135 }
1136
1137 /* This loop seeks out relocation sections for the data section, so
1138 that it can undo relocations performed by the runtime linker. */
1139 for (n = new_file_h->e_shnum - 1; n; n--)
1140 {
1141 ElfW(Shdr) section = NEW_SECTION_H (n);
1142 switch (section.sh_type) {
1143 default:
1144 break;
1145 case SHT_REL:
1146 case SHT_RELA:
1147 /* This code handles two different size structs, but there should
1148 be no harm in that provided that r_offset is always the first
1149 member. */
1150 nn = section.sh_info;
1151 if (!strcmp (old_section_names + NEW_SECTION_H (nn).sh_name, ".data")
1152 || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
1153 ".sdata")
1154 || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
1155 ".lit4")
1156 || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
1157 ".lit8")
1158 || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
1159 ".got")
1160 || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
1161 ".sdata1")
1162 || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
1163 ".data1"))
1164 {
1165 ElfW(Addr) offset = NEW_SECTION_H (nn).sh_addr -
1166 NEW_SECTION_H (nn).sh_offset;
1167 caddr_t reloc = old_base + section.sh_offset, end;
1168 for (end = reloc + section.sh_size; reloc < end;
1169 reloc += section.sh_entsize)
1170 {
1171 ElfW(Addr) addr = ((ElfW(Rel) *) reloc)->r_offset - offset;
1172 #ifdef __alpha__
1173 /* The Alpha ELF binutils currently have a bug that
1174 sometimes results in relocs that contain all
1175 zeroes. Work around this for now... */
1176 if (((ElfW(Rel) *) reloc)->r_offset == 0)
1177 continue;
1178 #endif
1179 memcpy (new_base + addr, old_base + addr, sizeof(ElfW(Addr)));
1180 }
1181 }
1182 break;
1183 }
1184 }
1185
1186 #ifdef UNEXEC_USE_MAP_PRIVATE
1187 if (lseek (new_file, 0, SEEK_SET) == -1)
1188 fatal ("Can't rewind (%s): errno %d\n", new_name, errno);
1189
1190 if (write (new_file, new_base, new_file_size) != new_file_size)
1191 fatal ("Can't write (%s): errno %d\n", new_name, errno);
1192 #endif
1193
1194 /* Close the files and make the new file executable. */
1195
1196 if (close (old_file))
1197 fatal ("Can't close (%s): errno %d\n", old_name, errno);
1198
1199 if (close (new_file))
1200 fatal ("Can't close (%s): errno %d\n", new_name, errno);
1201
1202 if (stat (new_name, &stat_buf) == -1)
1203 fatal ("Can't stat (%s): errno %d\n", new_name, errno);
1204
1205 n = umask (777);
1206 umask (n);
1207 stat_buf.st_mode |= 0111 & ~n;
1208 if (chmod (new_name, stat_buf.st_mode) == -1)
1209 fatal ("Can't chmod (%s): errno %d\n", new_name, errno);
1210 }
Unnamed repository; edit this file 'description' to name the repository.