aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mips/kernel/irixelf.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/kernel/irixelf.c')
-rw-r--r--arch/mips/kernel/irixelf.c1361
1 files changed, 0 insertions, 1361 deletions
diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c
deleted file mode 100644
index 469c7237e5ba..000000000000
--- a/arch/mips/kernel/irixelf.c
+++ /dev/null
@@ -1,1361 +0,0 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * irixelf.c: Code to load IRIX ELF executables conforming to the MIPS ABI.
7 * Based off of work by Eric Youngdale.
8 *
9 * Copyright (C) 1993 - 1994 Eric Youngdale <ericy@cais.com>
10 * Copyright (C) 1996 - 2004 David S. Miller <dm@engr.sgi.com>
11 * Copyright (C) 2004 - 2005 Steven J. Hill <sjhill@realitydiluted.com>
12 */
13#undef DEBUG
14
15#include <linux/module.h>
16#include <linux/fs.h>
17#include <linux/stat.h>
18#include <linux/sched.h>
19#include <linux/mm.h>
20#include <linux/mman.h>
21#include <linux/a.out.h>
22#include <linux/errno.h>
23#include <linux/init.h>
24#include <linux/signal.h>
25#include <linux/binfmts.h>
26#include <linux/string.h>
27#include <linux/file.h>
28#include <linux/fcntl.h>
29#include <linux/ptrace.h>
30#include <linux/slab.h>
31#include <linux/shm.h>
32#include <linux/personality.h>
33#include <linux/elfcore.h>
34
35#include <asm/mipsregs.h>
36#include <asm/namei.h>
37#include <asm/prctl.h>
38#include <asm/uaccess.h>
39
40#define DLINFO_ITEMS 12
41
42#include <linux/elf.h>
43
44static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs);
45static int load_irix_library(struct file *);
46static int irix_core_dump(long signr, struct pt_regs * regs,
47 struct file *file, unsigned long limit);
48
49static struct linux_binfmt irix_format = {
50 .module = THIS_MODULE,
51 .load_binary = load_irix_binary,
52 .load_shlib = load_irix_library,
53 .core_dump = irix_core_dump,
54 .min_coredump = PAGE_SIZE,
55};
56
57/* Debugging routines. */
58static char *get_elf_p_type(Elf32_Word p_type)
59{
60#ifdef DEBUG
61 switch (p_type) {
62 case PT_NULL:
63 return "PT_NULL";
64 break;
65
66 case PT_LOAD:
67 return "PT_LOAD";
68 break;
69
70 case PT_DYNAMIC:
71 return "PT_DYNAMIC";
72 break;
73
74 case PT_INTERP:
75 return "PT_INTERP";
76 break;
77
78 case PT_NOTE:
79 return "PT_NOTE";
80 break;
81
82 case PT_SHLIB:
83 return "PT_SHLIB";
84 break;
85
86 case PT_PHDR:
87 return "PT_PHDR";
88 break;
89
90 case PT_LOPROC:
91 return "PT_LOPROC/REGINFO";
92 break;
93
94 case PT_HIPROC:
95 return "PT_HIPROC";
96 break;
97
98 default:
99 return "PT_BOGUS";
100 break;
101 }
102#endif
103}
104
105static void print_elfhdr(struct elfhdr *ehp)
106{
107 int i;
108
109 pr_debug("ELFHDR: e_ident<");
110 for (i = 0; i < (EI_NIDENT - 1); i++)
111 pr_debug("%x ", ehp->e_ident[i]);
112 pr_debug("%x>\n", ehp->e_ident[i]);
113 pr_debug(" e_type[%04x] e_machine[%04x] e_version[%08lx]\n",
114 (unsigned short) ehp->e_type, (unsigned short) ehp->e_machine,
115 (unsigned long) ehp->e_version);
116 pr_debug(" e_entry[%08lx] e_phoff[%08lx] e_shoff[%08lx] "
117 "e_flags[%08lx]\n",
118 (unsigned long) ehp->e_entry, (unsigned long) ehp->e_phoff,
119 (unsigned long) ehp->e_shoff, (unsigned long) ehp->e_flags);
120 pr_debug(" e_ehsize[%04x] e_phentsize[%04x] e_phnum[%04x]\n",
121 (unsigned short) ehp->e_ehsize,
122 (unsigned short) ehp->e_phentsize,
123 (unsigned short) ehp->e_phnum);
124 pr_debug(" e_shentsize[%04x] e_shnum[%04x] e_shstrndx[%04x]\n",
125 (unsigned short) ehp->e_shentsize,
126 (unsigned short) ehp->e_shnum,
127 (unsigned short) ehp->e_shstrndx);
128}
129
130static void print_phdr(int i, struct elf_phdr *ep)
131{
132 pr_debug("PHDR[%d]: p_type[%s] p_offset[%08lx] p_vaddr[%08lx] "
133 "p_paddr[%08lx]\n", i, get_elf_p_type(ep->p_type),
134 (unsigned long) ep->p_offset, (unsigned long) ep->p_vaddr,
135 (unsigned long) ep->p_paddr);
136 pr_debug(" p_filesz[%08lx] p_memsz[%08lx] p_flags[%08lx] "
137 "p_align[%08lx]\n", (unsigned long) ep->p_filesz,
138 (unsigned long) ep->p_memsz, (unsigned long) ep->p_flags,
139 (unsigned long) ep->p_align);
140}
141
142static void dump_phdrs(struct elf_phdr *ep, int pnum)
143{
144 int i;
145
146 for (i = 0; i < pnum; i++, ep++) {
147 if ((ep->p_type == PT_LOAD) ||
148 (ep->p_type == PT_INTERP) ||
149 (ep->p_type == PT_PHDR))
150 print_phdr(i, ep);
151 }
152}
153
154static void set_brk(unsigned long start, unsigned long end)
155{
156 start = PAGE_ALIGN(start);
157 end = PAGE_ALIGN(end);
158 if (end <= start)
159 return;
160 down_write(&current->mm->mmap_sem);
161 do_brk(start, end - start);
162 up_write(&current->mm->mmap_sem);
163}
164
165
166/* We need to explicitly zero any fractional pages
167 * after the data section (i.e. bss). This would
168 * contain the junk from the file that should not
169 * be in memory.
170 */
171static void padzero(unsigned long elf_bss)
172{
173 unsigned long nbyte;
174
175 nbyte = elf_bss & (PAGE_SIZE-1);
176 if (nbyte) {
177 nbyte = PAGE_SIZE - nbyte;
178 clear_user((void __user *) elf_bss, nbyte);
179 }
180}
181
182static unsigned long * create_irix_tables(char * p, int argc, int envc,
183 struct elfhdr * exec, unsigned int load_addr,
184 unsigned int interp_load_addr, struct pt_regs *regs,
185 struct elf_phdr *ephdr)
186{
187 elf_addr_t *argv;
188 elf_addr_t *envp;
189 elf_addr_t *sp, *csp;
190
191 pr_debug("create_irix_tables: p[%p] argc[%d] envc[%d] "
192 "load_addr[%08x] interp_load_addr[%08x]\n",
193 p, argc, envc, load_addr, interp_load_addr);
194
195 sp = (elf_addr_t *) (~15UL & (unsigned long) p);
196 csp = sp;
197 csp -= exec ? DLINFO_ITEMS*2 : 2;
198 csp -= envc+1;
199 csp -= argc+1;
200 csp -= 1; /* argc itself */
201 if ((unsigned long)csp & 15UL) {
202 sp -= (16UL - ((unsigned long)csp & 15UL)) / sizeof(*sp);
203 }
204
205 /*
206 * Put the ELF interpreter info on the stack
207 */
208#define NEW_AUX_ENT(nr, id, val) \
209 __put_user((id), sp+(nr*2)); \
210 __put_user((val), sp+(nr*2+1)); \
211
212 sp -= 2;
213 NEW_AUX_ENT(0, AT_NULL, 0);
214
215 if (exec) {
216 sp -= 11*2;
217
218 NEW_AUX_ENT(0, AT_PHDR, load_addr + exec->e_phoff);
219 NEW_AUX_ENT(1, AT_PHENT, sizeof(struct elf_phdr));
220 NEW_AUX_ENT(2, AT_PHNUM, exec->e_phnum);
221 NEW_AUX_ENT(3, AT_PAGESZ, ELF_EXEC_PAGESIZE);
222 NEW_AUX_ENT(4, AT_BASE, interp_load_addr);
223 NEW_AUX_ENT(5, AT_FLAGS, 0);
224 NEW_AUX_ENT(6, AT_ENTRY, (elf_addr_t) exec->e_entry);
225 NEW_AUX_ENT(7, AT_UID, (elf_addr_t) current->uid);
226 NEW_AUX_ENT(8, AT_EUID, (elf_addr_t) current->euid);
227 NEW_AUX_ENT(9, AT_GID, (elf_addr_t) current->gid);
228 NEW_AUX_ENT(10, AT_EGID, (elf_addr_t) current->egid);
229 }
230#undef NEW_AUX_ENT
231
232 sp -= envc+1;
233 envp = sp;
234 sp -= argc+1;
235 argv = sp;
236
237 __put_user((elf_addr_t)argc, --sp);
238 current->mm->arg_start = (unsigned long) p;
239 while (argc-->0) {
240 __put_user((unsigned long)p, argv++);
241 p += strlen_user(p);
242 }
243 __put_user((unsigned long) NULL, argv);
244 current->mm->arg_end = current->mm->env_start = (unsigned long) p;
245 while (envc-->0) {
246 __put_user((unsigned long)p, envp++);
247 p += strlen_user(p);
248 }
249 __put_user((unsigned long) NULL, envp);
250 current->mm->env_end = (unsigned long) p;
251 return sp;
252}
253
254
255/* This is much more generalized than the library routine read function,
256 * so we keep this separate. Technically the library read function
257 * is only provided so that we can read a.out libraries that have
258 * an ELF header.
259 */
260static unsigned int load_irix_interp(struct elfhdr * interp_elf_ex,
261 struct file * interpreter,
262 unsigned int *interp_load_addr)
263{
264 struct elf_phdr *elf_phdata = NULL;
265 struct elf_phdr *eppnt;
266 unsigned int len;
267 unsigned int load_addr;
268 int elf_bss;
269 int retval;
270 unsigned int last_bss;
271 int error;
272 int i;
273 unsigned int k;
274
275 elf_bss = 0;
276 last_bss = 0;
277 error = load_addr = 0;
278
279 print_elfhdr(interp_elf_ex);
280
281 /* First of all, some simple consistency checks */
282 if ((interp_elf_ex->e_type != ET_EXEC &&
283 interp_elf_ex->e_type != ET_DYN) ||
284 !interpreter->f_op->mmap) {
285 printk("IRIX interp has bad e_type %d\n", interp_elf_ex->e_type);
286 return 0xffffffff;
287 }
288
289 /* Now read in all of the header information */
290 if (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > PAGE_SIZE) {
291 printk("IRIX interp header bigger than a page (%d)\n",
292 (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum));
293 return 0xffffffff;
294 }
295
296 elf_phdata = kmalloc(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum,
297 GFP_KERNEL);
298
299 if (!elf_phdata) {
300 printk("Cannot kmalloc phdata for IRIX interp.\n");
301 return 0xffffffff;
302 }
303
304 /* If the size of this structure has changed, then punt, since
305 * we will be doing the wrong thing.
306 */
307 if (interp_elf_ex->e_phentsize != 32) {
308 printk("IRIX interp e_phentsize == %d != 32 ",
309 interp_elf_ex->e_phentsize);
310 kfree(elf_phdata);
311 return 0xffffffff;
312 }
313
314 retval = kernel_read(interpreter, interp_elf_ex->e_phoff,
315 (char *) elf_phdata,
316 sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
317
318 dump_phdrs(elf_phdata, interp_elf_ex->e_phnum);
319
320 eppnt = elf_phdata;
321 for (i = 0; i < interp_elf_ex->e_phnum; i++, eppnt++) {
322 if (eppnt->p_type == PT_LOAD) {
323 int elf_type = MAP_PRIVATE | MAP_DENYWRITE;
324 int elf_prot = 0;
325 unsigned long vaddr = 0;
326 if (eppnt->p_flags & PF_R)
327 elf_prot = PROT_READ;
328 if (eppnt->p_flags & PF_W)
329 elf_prot |= PROT_WRITE;
330 if (eppnt->p_flags & PF_X)
331 elf_prot |= PROT_EXEC;
332 elf_type |= MAP_FIXED;
333 vaddr = eppnt->p_vaddr;
334
335 pr_debug("INTERP do_mmap"
336 "(%p, %08lx, %08lx, %08lx, %08lx, %08lx) ",
337 interpreter, vaddr,
338 (unsigned long)
339 (eppnt->p_filesz + (eppnt->p_vaddr & 0xfff)),
340 (unsigned long)
341 elf_prot, (unsigned long) elf_type,
342 (unsigned long)
343 (eppnt->p_offset & 0xfffff000));
344
345 down_write(&current->mm->mmap_sem);
346 error = do_mmap(interpreter, vaddr,
347 eppnt->p_filesz + (eppnt->p_vaddr & 0xfff),
348 elf_prot, elf_type,
349 eppnt->p_offset & 0xfffff000);
350 up_write(&current->mm->mmap_sem);
351
352 if (error < 0 && error > -1024) {
353 printk("Aieee IRIX interp mmap error=%d\n",
354 error);
355 break; /* Real error */
356 }
357 pr_debug("error=%08lx ", (unsigned long) error);
358 if (!load_addr && interp_elf_ex->e_type == ET_DYN) {
359 load_addr = error;
360 pr_debug("load_addr = error ");
361 }
362
363 /*
364 * Find the end of the file mapping for this phdr, and
365 * keep track of the largest address we see for this.
366 */
367 k = eppnt->p_vaddr + eppnt->p_filesz;
368 if (k > elf_bss)
369 elf_bss = k;
370
371 /* Do the same thing for the memory mapping - between
372 * elf_bss and last_bss is the bss section.
373 */
374 k = eppnt->p_memsz + eppnt->p_vaddr;
375 if (k > last_bss)
376 last_bss = k;
377 pr_debug("\n");
378 }
379 }
380
381 /* Now use mmap to map the library into memory. */
382 if (error < 0 && error > -1024) {
383 pr_debug("got error %d\n", error);
384 kfree(elf_phdata);
385 return 0xffffffff;
386 }
387
388 /* Now fill out the bss section. First pad the last page up
389 * to the page boundary, and then perform a mmap to make sure
390 * that there are zero-mapped pages up to and including the
391 * last bss page.
392 */
393 pr_debug("padzero(%08lx) ", (unsigned long) (elf_bss));
394 padzero(elf_bss);
395 len = (elf_bss + 0xfff) & 0xfffff000; /* What we have mapped so far */
396
397 pr_debug("last_bss[%08lx] len[%08lx]\n", (unsigned long) last_bss,
398 (unsigned long) len);
399
400 /* Map the last of the bss segment */
401 if (last_bss > len) {
402 down_write(&current->mm->mmap_sem);
403 do_brk(len, (last_bss - len));
404 up_write(&current->mm->mmap_sem);
405 }
406 kfree(elf_phdata);
407
408 *interp_load_addr = load_addr;
409 return ((unsigned int) interp_elf_ex->e_entry);
410}
411
412/* Check sanity of IRIX elf executable header. */
413static int verify_binary(struct elfhdr *ehp, struct linux_binprm *bprm)
414{
415 if (memcmp(ehp->e_ident, ELFMAG, SELFMAG) != 0)
416 return -ENOEXEC;
417
418 /* First of all, some simple consistency checks */
419 if ((ehp->e_type != ET_EXEC && ehp->e_type != ET_DYN) ||
420 !bprm->file->f_op->mmap) {
421 return -ENOEXEC;
422 }
423
424 /* XXX Don't support N32 or 64bit binaries yet because they can
425 * XXX and do execute 64 bit instructions and expect all registers
426 * XXX to be 64 bit as well. We need to make the kernel save
427 * XXX all registers as 64bits on cpu's capable of this at
428 * XXX exception time plus frob the XTLB exception vector.
429 */
430 if ((ehp->e_flags & EF_MIPS_ABI2))
431 return -ENOEXEC;
432
433 return 0;
434}
435
436/*
437 * This is where the detailed check is performed. Irix binaries
438 * use interpreters with 'libc.so' in the name, so this function
439 * can differentiate between Linux and Irix binaries.
440 */
441static inline int look_for_irix_interpreter(char **name,
442 struct file **interpreter,
443 struct elfhdr *interp_elf_ex,
444 struct elf_phdr *epp,
445 struct linux_binprm *bprm, int pnum)
446{
447 int i;
448 int retval = -EINVAL;
449 struct file *file = NULL;
450
451 *name = NULL;
452 for (i = 0; i < pnum; i++, epp++) {
453 if (epp->p_type != PT_INTERP)
454 continue;
455
456 /* It is illegal to have two interpreters for one executable. */
457 if (*name != NULL)
458 goto out;
459
460 *name = kmalloc(epp->p_filesz + strlen(IRIX_EMUL), GFP_KERNEL);
461 if (!*name)
462 return -ENOMEM;
463
464 strcpy(*name, IRIX_EMUL);
465 retval = kernel_read(bprm->file, epp->p_offset, (*name + 16),
466 epp->p_filesz);
467 if (retval < 0)
468 goto out;
469
470 file = open_exec(*name);
471 if (IS_ERR(file)) {
472 retval = PTR_ERR(file);
473 goto out;
474 }
475 retval = kernel_read(file, 0, bprm->buf, 128);
476 if (retval < 0)
477 goto dput_and_out;
478
479 *interp_elf_ex = *(struct elfhdr *) bprm->buf;
480 }
481 *interpreter = file;
482 return 0;
483
484dput_and_out:
485 fput(file);
486out:
487 kfree(*name);
488 return retval;
489}
490
491static inline int verify_irix_interpreter(struct elfhdr *ihp)
492{
493 if (memcmp(ihp->e_ident, ELFMAG, SELFMAG) != 0)
494 return -ELIBBAD;
495 return 0;
496}
497
498#define EXEC_MAP_FLAGS (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE)
499
500static inline void map_executable(struct file *fp, struct elf_phdr *epp, int pnum,
501 unsigned int *estack, unsigned int *laddr,
502 unsigned int *scode, unsigned int *ebss,
503 unsigned int *ecode, unsigned int *edata,
504 unsigned int *ebrk)
505{
506 unsigned int tmp;
507 int i, prot;
508
509 for (i = 0; i < pnum; i++, epp++) {
510 if (epp->p_type != PT_LOAD)
511 continue;
512
513 /* Map it. */
514 prot = (epp->p_flags & PF_R) ? PROT_READ : 0;
515 prot |= (epp->p_flags & PF_W) ? PROT_WRITE : 0;
516 prot |= (epp->p_flags & PF_X) ? PROT_EXEC : 0;
517 down_write(&current->mm->mmap_sem);
518 (void) do_mmap(fp, (epp->p_vaddr & 0xfffff000),
519 (epp->p_filesz + (epp->p_vaddr & 0xfff)),
520 prot, EXEC_MAP_FLAGS,
521 (epp->p_offset & 0xfffff000));
522 up_write(&current->mm->mmap_sem);
523
524 /* Fixup location tracking vars. */
525 if ((epp->p_vaddr & 0xfffff000) < *estack)
526 *estack = (epp->p_vaddr & 0xfffff000);
527 if (!*laddr)
528 *laddr = epp->p_vaddr - epp->p_offset;
529 if (epp->p_vaddr < *scode)
530 *scode = epp->p_vaddr;
531
532 tmp = epp->p_vaddr + epp->p_filesz;
533 if (tmp > *ebss)
534 *ebss = tmp;
535 if ((epp->p_flags & PF_X) && *ecode < tmp)
536 *ecode = tmp;
537 if (*edata < tmp)
538 *edata = tmp;
539
540 tmp = epp->p_vaddr + epp->p_memsz;
541 if (tmp > *ebrk)
542 *ebrk = tmp;
543 }
544
545}
546
547static inline int map_interpreter(struct elf_phdr *epp, struct elfhdr *ihp,
548 struct file *interp, unsigned int *iladdr,
549 int pnum, mm_segment_t old_fs,
550 unsigned int *eentry)
551{
552 int i;
553
554 *eentry = 0xffffffff;
555 for (i = 0; i < pnum; i++, epp++) {
556 if (epp->p_type != PT_INTERP)
557 continue;
558
559 /* We should have fielded this error elsewhere... */
560 if (*eentry != 0xffffffff)
561 return -1;
562
563 set_fs(old_fs);
564 *eentry = load_irix_interp(ihp, interp, iladdr);
565 old_fs = get_fs();
566 set_fs(get_ds());
567
568 fput(interp);
569
570 if (*eentry == 0xffffffff)
571 return -1;
572 }
573 return 0;
574}
575
576/*
577 * IRIX maps a page at 0x200000 that holds information about the
578 * process and the system, here we map the page and fill the
579 * structure
580 */
581static int irix_map_prda_page(void)
582{
583 unsigned long v;
584 struct prda *pp;
585
586 down_write(&current->mm->mmap_sem);
587 v = do_brk(PRDA_ADDRESS, PAGE_SIZE);
588 up_write(&current->mm->mmap_sem);
589
590 if (v != PRDA_ADDRESS)
591 return v; /* v must be an error code */
592
593 pp = (struct prda *) v;
594 pp->prda_sys.t_pid = task_pid_vnr(current);
595 pp->prda_sys.t_prid = read_c0_prid();
596 pp->prda_sys.t_rpid = task_pid_vnr(current);
597
598 /* We leave the rest set to zero */
599
600 return 0;
601}
602
603
604
605/* These are the functions used to load ELF style executables and shared
606 * libraries. There is no binary dependent code anywhere else.
607 */
608static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs)
609{
610 struct elfhdr elf_ex, interp_elf_ex;
611 struct file *interpreter;
612 struct elf_phdr *elf_phdata, *elf_ihdr, *elf_ephdr;
613 unsigned int load_addr, elf_bss, elf_brk;
614 unsigned int elf_entry, interp_load_addr = 0;
615 unsigned int start_code, end_code, end_data, elf_stack;
616 int retval, has_interp, has_ephdr, size, i;
617 char *elf_interpreter;
618 mm_segment_t old_fs;
619
620 load_addr = 0;
621 has_interp = has_ephdr = 0;
622 elf_ihdr = elf_ephdr = NULL;
623 elf_ex = *((struct elfhdr *) bprm->buf);
624 retval = -ENOEXEC;
625
626 if (verify_binary(&elf_ex, bprm))
627 goto out;
628
629 /*
630 * Telling -o32 static binaries from Linux and Irix apart from each
631 * other is difficult. There are 2 differences to be noted for static
632 * binaries from the 2 operating systems:
633 *
634 * 1) Irix binaries have their .text section before their .init
635 * section. Linux binaries are just the opposite.
636 *
637 * 2) Irix binaries usually have <= 12 sections and Linux
638 * binaries have > 20.
639 *
640 * We will use Method #2 since Method #1 would require us to read in
641 * the section headers which is way too much overhead. This appears
642 * to work for everything we have ran into so far. If anyone has a
643 * better method to tell the binaries apart, I'm listening.
644 */
645 if (elf_ex.e_shnum > 20)
646 goto out;
647
648 print_elfhdr(&elf_ex);
649
650 /* Now read in all of the header information */
651 size = elf_ex.e_phentsize * elf_ex.e_phnum;
652 if (size > 65536)
653 goto out;
654 elf_phdata = kmalloc(size, GFP_KERNEL);
655 if (elf_phdata == NULL) {
656 retval = -ENOMEM;
657 goto out;
658 }
659
660 retval = kernel_read(bprm->file, elf_ex.e_phoff, (char *)elf_phdata, size);
661 if (retval < 0)
662 goto out_free_ph;
663
664 dump_phdrs(elf_phdata, elf_ex.e_phnum);
665
666 /* Set some things for later. */
667 for (i = 0; i < elf_ex.e_phnum; i++) {
668 switch (elf_phdata[i].p_type) {
669 case PT_INTERP:
670 has_interp = 1;
671 elf_ihdr = &elf_phdata[i];
672 break;
673 case PT_PHDR:
674 has_ephdr = 1;
675 elf_ephdr = &elf_phdata[i];
676 break;
677 };
678 }
679
680 pr_debug("\n");
681
682 elf_bss = 0;
683 elf_brk = 0;
684
685 elf_stack = 0xffffffff;
686 elf_interpreter = NULL;
687 start_code = 0xffffffff;
688 end_code = 0;
689 end_data = 0;
690
691 /*
692 * If we get a return value, we change the value to be ENOEXEC
693 * so that we can exit gracefully and the main binary format
694 * search loop in 'fs/exec.c' will move onto the next handler
695 * which should be the normal ELF binary handler.
696 */
697 retval = look_for_irix_interpreter(&elf_interpreter, &interpreter,
698 &interp_elf_ex, elf_phdata, bprm,
699 elf_ex.e_phnum);
700 if (retval) {
701 retval = -ENOEXEC;
702 goto out_free_file;
703 }
704
705 if (elf_interpreter) {
706 retval = verify_irix_interpreter(&interp_elf_ex);
707 if (retval)
708 goto out_free_interp;
709 }
710
711 /* OK, we are done with that, now set up the arg stuff,
712 * and then start this sucker up.
713 */
714 retval = -E2BIG;
715 if (!bprm->sh_bang && !bprm->p)
716 goto out_free_interp;
717
718 /* Flush all traces of the currently running executable */
719 retval = flush_old_exec(bprm);
720 if (retval)
721 goto out_free_dentry;
722
723 /* OK, This is the point of no return */
724 current->mm->end_data = 0;
725 current->mm->end_code = 0;
726 current->mm->mmap = NULL;
727 current->flags &= ~PF_FORKNOEXEC;
728 elf_entry = (unsigned int) elf_ex.e_entry;
729
730 /* Do this so that we can load the interpreter, if need be. We will
731 * change some of these later.
732 */
733 setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
734 current->mm->start_stack = bprm->p;
735
736 /* At this point, we assume that the image should be loaded at
737 * fixed address, not at a variable address.
738 */
739 old_fs = get_fs();
740 set_fs(get_ds());
741
742 map_executable(bprm->file, elf_phdata, elf_ex.e_phnum, &elf_stack,
743 &load_addr, &start_code, &elf_bss, &end_code,
744 &end_data, &elf_brk);
745
746 if (elf_interpreter) {
747 retval = map_interpreter(elf_phdata, &interp_elf_ex,
748 interpreter, &interp_load_addr,
749 elf_ex.e_phnum, old_fs, &elf_entry);
750 kfree(elf_interpreter);
751 if (retval) {
752 set_fs(old_fs);
753 printk("Unable to load IRIX ELF interpreter\n");
754 send_sig(SIGSEGV, current, 0);
755 retval = 0;
756 goto out_free_file;
757 }
758 }
759
760 set_fs(old_fs);
761
762 kfree(elf_phdata);
763 set_personality(PER_IRIX32);
764 set_binfmt(&irix_format);
765 compute_creds(bprm);
766 current->flags &= ~PF_FORKNOEXEC;
767 bprm->p = (unsigned long)
768 create_irix_tables((char *)bprm->p, bprm->argc, bprm->envc,
769 (elf_interpreter ? &elf_ex : NULL),
770 load_addr, interp_load_addr, regs, elf_ephdr);
771 current->mm->start_brk = current->mm->brk = elf_brk;
772 current->mm->end_code = end_code;
773 current->mm->start_code = start_code;
774 current->mm->end_data = end_data;
775 current->mm->start_stack = bprm->p;
776
777 /* Calling set_brk effectively mmaps the pages that we need for the
778 * bss and break sections.
779 */
780 set_brk(elf_bss, elf_brk);
781
782 /*
783 * IRIX maps a page at 0x200000 which holds some system
784 * information. Programs depend on this.
785 */
786 if (irix_map_prda_page())
787 goto out_free_dentry;
788
789 padzero(elf_bss);
790
791 pr_debug("(start_brk) %lx\n" , (long) current->mm->start_brk);
792 pr_debug("(end_code) %lx\n" , (long) current->mm->end_code);
793 pr_debug("(start_code) %lx\n" , (long) current->mm->start_code);
794 pr_debug("(end_data) %lx\n" , (long) current->mm->end_data);
795 pr_debug("(start_stack) %lx\n" , (long) current->mm->start_stack);
796 pr_debug("(brk) %lx\n" , (long) current->mm->brk);
797
798#if 0 /* XXX No fucking way dude... */
799 /* Why this, you ask??? Well SVr4 maps page 0 as read-only,
800 * and some applications "depend" upon this behavior.
801 * Since we do not have the power to recompile these, we
802 * emulate the SVr4 behavior. Sigh.
803 */
804 down_write(&current->mm->mmap_sem);
805 (void) do_mmap(NULL, 0, 4096, PROT_READ | PROT_EXEC,
806 MAP_FIXED | MAP_PRIVATE, 0);
807 up_write(&current->mm->mmap_sem);
808#endif
809
810 start_thread(regs, elf_entry, bprm->p);
811 if (current->ptrace & PT_PTRACED)
812 send_sig(SIGTRAP, current, 0);
813 return 0;
814out:
815 return retval;
816
817out_free_dentry:
818 allow_write_access(interpreter);
819 fput(interpreter);
820out_free_interp:
821 kfree(elf_interpreter);
822out_free_file:
823out_free_ph:
824 kfree(elf_phdata);
825 goto out;
826}
827
828/* This is really simpleminded and specialized - we are loading an
829 * a.out library that is given an ELF header.
830 */
831static int load_irix_library(struct file *file)
832{
833 struct elfhdr elf_ex;
834 struct elf_phdr *elf_phdata = NULL;
835 unsigned int len = 0;
836 int elf_bss = 0;
837 int retval;
838 unsigned int bss;
839 int error;
840 int i, j, k;
841
842 error = kernel_read(file, 0, (char *) &elf_ex, sizeof(elf_ex));
843 if (error != sizeof(elf_ex))
844 return -ENOEXEC;
845
846 if (memcmp(elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
847 return -ENOEXEC;
848
849 /* First of all, some simple consistency checks. */
850 if (elf_ex.e_type != ET_EXEC || elf_ex.e_phnum > 2 ||
851 !file->f_op->mmap)
852 return -ENOEXEC;
853
854 /* Now read in all of the header information. */
855 if (sizeof(struct elf_phdr) * elf_ex.e_phnum > PAGE_SIZE)
856 return -ENOEXEC;
857
858 elf_phdata = kmalloc(sizeof(struct elf_phdr) * elf_ex.e_phnum, GFP_KERNEL);
859 if (elf_phdata == NULL)
860 return -ENOMEM;
861
862 retval = kernel_read(file, elf_ex.e_phoff, (char *) elf_phdata,
863 sizeof(struct elf_phdr) * elf_ex.e_phnum);
864
865 j = 0;
866 for (i=0; i<elf_ex.e_phnum; i++)
867 if ((elf_phdata + i)->p_type == PT_LOAD) j++;
868
869 if (j != 1) {
870 kfree(elf_phdata);
871 return -ENOEXEC;
872 }
873
874 while (elf_phdata->p_type != PT_LOAD) elf_phdata++;
875
876 /* Now use mmap to map the library into memory. */
877 down_write(&current->mm->mmap_sem);
878 error = do_mmap(file,
879 elf_phdata->p_vaddr & 0xfffff000,
880 elf_phdata->p_filesz + (elf_phdata->p_vaddr & 0xfff),
881 PROT_READ | PROT_WRITE | PROT_EXEC,
882 MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE,
883 elf_phdata->p_offset & 0xfffff000);
884 up_write(&current->mm->mmap_sem);
885
886 k = elf_phdata->p_vaddr + elf_phdata->p_filesz;
887 if (k > elf_bss) elf_bss = k;
888
889 if (error != (elf_phdata->p_vaddr & 0xfffff000)) {
890 kfree(elf_phdata);
891 return error;
892 }
893
894 padzero(elf_bss);
895
896 len = (elf_phdata->p_filesz + elf_phdata->p_vaddr+ 0xfff) & 0xfffff000;
897 bss = elf_phdata->p_memsz + elf_phdata->p_vaddr;
898 if (bss > len) {
899 down_write(&current->mm->mmap_sem);
900 do_brk(len, bss-len);
901 up_write(&current->mm->mmap_sem);
902 }
903 kfree(elf_phdata);
904 return 0;
905}
906
907/* Called through irix_syssgi() to map an elf image given an FD,
908 * a phdr ptr USER_PHDRP in userspace, and a count CNT telling how many
909 * phdrs there are in the USER_PHDRP array. We return the vaddr the
910 * first phdr was successfully mapped to.
911 */
912unsigned long irix_mapelf(int fd, struct elf_phdr __user *user_phdrp, int cnt)
913{
914 unsigned long type, vaddr, filesz, offset, flags;
915 struct elf_phdr __user *hp;
916 struct file *filp;
917 int i, retval;
918
919 pr_debug("irix_mapelf: fd[%d] user_phdrp[%p] cnt[%d]\n",
920 fd, user_phdrp, cnt);
921
922 /* First get the verification out of the way. */
923 hp = user_phdrp;
924 if (!access_ok(VERIFY_READ, hp, (sizeof(struct elf_phdr) * cnt))) {
925 pr_debug("irix_mapelf: bad pointer to ELF PHDR!\n");
926
927 return -EFAULT;
928 }
929
930 dump_phdrs(user_phdrp, cnt);
931
932 for (i = 0; i < cnt; i++, hp++) {
933 if (__get_user(type, &hp->p_type))
934 return -EFAULT;
935 if (type != PT_LOAD) {
936 printk("irix_mapelf: One section is not PT_LOAD!\n");
937 return -ENOEXEC;
938 }
939 }
940
941 filp = fget(fd);
942 if (!filp)
943 return -EACCES;
944 if (!filp->f_op) {
945 printk("irix_mapelf: Bogon filp!\n");
946 fput(filp);
947 return -EACCES;
948 }
949
950 hp = user_phdrp;
951 for (i = 0; i < cnt; i++, hp++) {
952 int prot;
953
954 retval = __get_user(vaddr, &hp->p_vaddr);
955 retval |= __get_user(filesz, &hp->p_filesz);
956 retval |= __get_user(offset, &hp->p_offset);
957 retval |= __get_user(flags, &hp->p_flags);
958 if (retval)
959 return retval;
960
961 prot = (flags & PF_R) ? PROT_READ : 0;
962 prot |= (flags & PF_W) ? PROT_WRITE : 0;
963 prot |= (flags & PF_X) ? PROT_EXEC : 0;
964
965 down_write(&current->mm->mmap_sem);
966 retval = do_mmap(filp, (vaddr & 0xfffff000),
967 (filesz + (vaddr & 0xfff)),
968 prot, (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE),
969 (offset & 0xfffff000));
970 up_write(&current->mm->mmap_sem);
971
972 if (retval != (vaddr & 0xfffff000)) {
973 printk("irix_mapelf: do_mmap fails with %d!\n", retval);
974 fput(filp);
975 return retval;
976 }
977 }
978
979 pr_debug("irix_mapelf: Success, returning %08lx\n",
980 (unsigned long) user_phdrp->p_vaddr);
981
982 fput(filp);
983
984 if (__get_user(vaddr, &user_phdrp->p_vaddr))
985 return -EFAULT;
986
987 return vaddr;
988}
989
990/*
991 * ELF core dumper
992 *
993 * Modelled on fs/exec.c:aout_core_dump()
994 * Jeremy Fitzhardinge <jeremy@sw.oz.au>
995 */
996
997/* These are the only things you should do on a core-file: use only these
998 * functions to write out all the necessary info.
999 */
1000static int dump_write(struct file *file, const void __user *addr, int nr)
1001{
1002 return file->f_op->write(file, (const char __user *) addr, nr, &file->f_pos) == nr;
1003}
1004
1005static int dump_seek(struct file *file, off_t off)
1006{
1007 if (file->f_op->llseek) {
1008 if (file->f_op->llseek(file, off, 0) != off)
1009 return 0;
1010 } else
1011 file->f_pos = off;
1012 return 1;
1013}
1014
1015/* Decide whether a segment is worth dumping; default is yes to be
1016 * sure (missing info is worse than too much; etc).
1017 * Personally I'd include everything, and use the coredump limit...
1018 *
1019 * I think we should skip something. But I am not sure how. H.J.
1020 */
1021static inline int maydump(struct vm_area_struct *vma)
1022{
1023 if (!(vma->vm_flags & (VM_READ|VM_WRITE|VM_EXEC)))
1024 return 0;
1025#if 1
1026 if (vma->vm_flags & (VM_WRITE|VM_GROWSUP|VM_GROWSDOWN))
1027 return 1;
1028 if (vma->vm_flags & (VM_READ|VM_EXEC|VM_EXECUTABLE|VM_SHARED))
1029 return 0;
1030#endif
1031 return 1;
1032}
1033
1034/* An ELF note in memory. */
1035struct memelfnote
1036{
1037 const char *name;
1038 int type;
1039 unsigned int datasz;
1040 void *data;
1041};
1042
1043static int notesize(struct memelfnote *en)
1044{
1045 int sz;
1046
1047 sz = sizeof(struct elf_note);
1048 sz += roundup(strlen(en->name) + 1, 4);
1049 sz += roundup(en->datasz, 4);
1050
1051 return sz;
1052}
1053
1054#define DUMP_WRITE(addr, nr) \
1055 if (!dump_write(file, (addr), (nr))) \
1056 goto end_coredump;
1057#define DUMP_SEEK(off) \
1058 if (!dump_seek(file, (off))) \
1059 goto end_coredump;
1060
1061static int writenote(struct memelfnote *men, struct file *file)
1062{
1063 struct elf_note en;
1064
1065 en.n_namesz = strlen(men->name) + 1;
1066 en.n_descsz = men->datasz;
1067 en.n_type = men->type;
1068
1069 DUMP_WRITE(&en, sizeof(en));
1070 DUMP_WRITE(men->name, en.n_namesz);
1071 /* XXX - cast from long long to long to avoid need for libgcc.a */
1072 DUMP_SEEK(roundup((unsigned long)file->f_pos, 4)); /* XXX */
1073 DUMP_WRITE(men->data, men->datasz);
1074 DUMP_SEEK(roundup((unsigned long)file->f_pos, 4)); /* XXX */
1075
1076 return 1;
1077
1078end_coredump:
1079 return 0;
1080}
1081#undef DUMP_WRITE
1082#undef DUMP_SEEK
1083
1084#define DUMP_WRITE(addr, nr) \
1085 if (!dump_write(file, (addr), (nr))) \
1086 goto end_coredump;
1087#define DUMP_SEEK(off) \
1088 if (!dump_seek(file, (off))) \
1089 goto end_coredump;
1090
1091/* Actual dumper.
1092 *
1093 * This is a two-pass process; first we find the offsets of the bits,
1094 * and then they are actually written out. If we run out of core limit
1095 * we just truncate.
1096 */
1097static int irix_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit)
1098{
1099 int has_dumped = 0;
1100 mm_segment_t fs;
1101 int segs;
1102 int i;
1103 size_t size;
1104 struct vm_area_struct *vma;
1105 struct elfhdr elf;
1106 off_t offset = 0, dataoff;
1107 int numnote = 3;
1108 struct memelfnote notes[3];
1109 struct elf_prstatus prstatus; /* NT_PRSTATUS */
1110 elf_fpregset_t fpu; /* NT_PRFPREG */
1111 struct elf_prpsinfo psinfo; /* NT_PRPSINFO */
1112
1113 /* Count what's needed to dump, up to the limit of coredump size. */
1114 segs = 0;
1115 size = 0;
1116 for (vma = current->mm->mmap; vma != NULL; vma = vma->vm_next) {
1117 if (maydump(vma))
1118 {
1119 int sz = vma->vm_end-vma->vm_start;
1120
1121 if (size+sz >= limit)
1122 break;
1123 else
1124 size += sz;
1125 }
1126
1127 segs++;
1128 }
1129 pr_debug("irix_core_dump: %d segs taking %d bytes\n", segs, size);
1130
1131 /* Set up header. */
1132 memcpy(elf.e_ident, ELFMAG, SELFMAG);
1133 elf.e_ident[EI_CLASS] = ELFCLASS32;
1134 elf.e_ident[EI_DATA] = ELFDATA2LSB;
1135 elf.e_ident[EI_VERSION] = EV_CURRENT;
1136 elf.e_ident[EI_OSABI] = ELF_OSABI;
1137 memset(elf.e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
1138
1139 elf.e_type = ET_CORE;
1140 elf.e_machine = ELF_ARCH;
1141 elf.e_version = EV_CURRENT;
1142 elf.e_entry = 0;
1143 elf.e_phoff = sizeof(elf);
1144 elf.e_shoff = 0;
1145 elf.e_flags = 0;
1146 elf.e_ehsize = sizeof(elf);
1147 elf.e_phentsize = sizeof(struct elf_phdr);
1148 elf.e_phnum = segs+1; /* Include notes. */
1149 elf.e_shentsize = 0;
1150 elf.e_shnum = 0;
1151 elf.e_shstrndx = 0;
1152
1153 fs = get_fs();
1154 set_fs(KERNEL_DS);
1155
1156 has_dumped = 1;
1157 current->flags |= PF_DUMPCORE;
1158
1159 DUMP_WRITE(&elf, sizeof(elf));
1160 offset += sizeof(elf); /* Elf header. */
1161 offset += (segs+1) * sizeof(struct elf_phdr); /* Program headers. */
1162
1163 /* Set up the notes in similar form to SVR4 core dumps made
1164 * with info from their /proc.
1165 */
1166 memset(&psinfo, 0, sizeof(psinfo));
1167 memset(&prstatus, 0, sizeof(prstatus));
1168
1169 notes[0].name = "CORE";
1170 notes[0].type = NT_PRSTATUS;
1171 notes[0].datasz = sizeof(prstatus);
1172 notes[0].data = &prstatus;
1173 prstatus.pr_info.si_signo = prstatus.pr_cursig = signr;
1174 prstatus.pr_sigpend = current->pending.signal.sig[0];
1175 prstatus.pr_sighold = current->blocked.sig[0];
1176 psinfo.pr_pid = prstatus.pr_pid = task_pid_vnr(current);
1177 psinfo.pr_ppid = prstatus.pr_ppid = task_pid_vnr(current->parent);
1178 psinfo.pr_pgrp = prstatus.pr_pgrp = task_pgrp_vnr(current);
1179 psinfo.pr_sid = prstatus.pr_sid = task_session_vnr(current);
1180 if (thread_group_leader(current)) {
1181 /*
1182 * This is the record for the group leader. Add in the
1183 * cumulative times of previous dead threads. This total
1184 * won't include the time of each live thread whose state
1185 * is included in the core dump. The final total reported
1186 * to our parent process when it calls wait4 will include
1187 * those sums as well as the little bit more time it takes
1188 * this and each other thread to finish dying after the
1189 * core dump synchronization phase.
1190 */
1191 jiffies_to_timeval(current->utime + current->signal->utime,
1192 &prstatus.pr_utime);
1193 jiffies_to_timeval(current->stime + current->signal->stime,
1194 &prstatus.pr_stime);
1195 } else {
1196 jiffies_to_timeval(current->utime, &prstatus.pr_utime);
1197 jiffies_to_timeval(current->stime, &prstatus.pr_stime);
1198 }
1199 jiffies_to_timeval(current->signal->cutime, &prstatus.pr_cutime);
1200 jiffies_to_timeval(current->signal->cstime, &prstatus.pr_cstime);
1201
1202 if (sizeof(elf_gregset_t) != sizeof(struct pt_regs)) {
1203 printk("sizeof(elf_gregset_t) (%d) != sizeof(struct pt_regs) "
1204 "(%d)\n", sizeof(elf_gregset_t), sizeof(struct pt_regs));
1205 } else {
1206 *(struct pt_regs *)&prstatus.pr_reg = *regs;
1207 }
1208
1209 notes[1].name = "CORE";
1210 notes[1].type = NT_PRPSINFO;
1211 notes[1].datasz = sizeof(psinfo);
1212 notes[1].data = &psinfo;
1213 i = current->state ? ffz(~current->state) + 1 : 0;
1214 psinfo.pr_state = i;
1215 psinfo.pr_sname = (i < 0 || i > 5) ? '.' : "RSDZTD"[i];
1216 psinfo.pr_zomb = psinfo.pr_sname == 'Z';
1217 psinfo.pr_nice = task_nice(current);
1218 psinfo.pr_flag = current->flags;
1219 psinfo.pr_uid = current->uid;
1220 psinfo.pr_gid = current->gid;
1221 {
1222 int i, len;
1223
1224 set_fs(fs);
1225
1226 len = current->mm->arg_end - current->mm->arg_start;
1227 len = len >= ELF_PRARGSZ ? ELF_PRARGSZ : len;
1228 (void *) copy_from_user(&psinfo.pr_psargs,
1229 (const char __user *)current->mm->arg_start, len);
1230 for (i = 0; i < len; i++)
1231 if (psinfo.pr_psargs[i] == 0)
1232 psinfo.pr_psargs[i] = ' ';
1233 psinfo.pr_psargs[len] = 0;
1234
1235 set_fs(KERNEL_DS);
1236 }
1237 strlcpy(psinfo.pr_fname, current->comm, sizeof(psinfo.pr_fname));
1238
1239 /* Try to dump the FPU. */
1240 prstatus.pr_fpvalid = dump_fpu(regs, &fpu);
1241 if (!prstatus.pr_fpvalid) {
1242 numnote--;
1243 } else {
1244 notes[2].name = "CORE";
1245 notes[2].type = NT_PRFPREG;
1246 notes[2].datasz = sizeof(fpu);
1247 notes[2].data = &fpu;
1248 }
1249
1250 /* Write notes phdr entry. */
1251 {
1252 struct elf_phdr phdr;
1253 int sz = 0;
1254
1255 for (i = 0; i < numnote; i++)
1256 sz += notesize(&notes[i]);
1257
1258 phdr.p_type = PT_NOTE;
1259 phdr.p_offset = offset;
1260 phdr.p_vaddr = 0;
1261 phdr.p_paddr = 0;
1262 phdr.p_filesz = sz;
1263 phdr.p_memsz = 0;
1264 phdr.p_flags = 0;
1265 phdr.p_align = 0;
1266
1267 offset += phdr.p_filesz;
1268 DUMP_WRITE(&phdr, sizeof(phdr));
1269 }
1270
1271 /* Page-align dumped data. */
1272 dataoff = offset = roundup(offset, PAGE_SIZE);
1273
1274 /* Write program headers for segments dump. */
1275 for (vma = current->mm->mmap, i = 0;
1276 i < segs && vma != NULL; vma = vma->vm_next) {
1277 struct elf_phdr phdr;
1278 size_t sz;
1279
1280 i++;
1281
1282 sz = vma->vm_end - vma->vm_start;
1283
1284 phdr.p_type = PT_LOAD;
1285 phdr.p_offset = offset;
1286 phdr.p_vaddr = vma->vm_start;
1287 phdr.p_paddr = 0;
1288 phdr.p_filesz = maydump(vma) ? sz : 0;
1289 phdr.p_memsz = sz;
1290 offset += phdr.p_filesz;
1291 phdr.p_flags = vma->vm_flags & VM_READ ? PF_R : 0;
1292 if (vma->vm_flags & VM_WRITE)
1293 phdr.p_flags |= PF_W;
1294 if (vma->vm_flags & VM_EXEC)
1295 phdr.p_flags |= PF_X;
1296 phdr.p_align = PAGE_SIZE;
1297
1298 DUMP_WRITE(&phdr, sizeof(phdr));
1299 }
1300
1301 for (i = 0; i < numnote; i++)
1302 if (!writenote(&notes[i], file))
1303 goto end_coredump;
1304
1305 set_fs(fs);
1306
1307 DUMP_SEEK(dataoff);
1308
1309 for (i = 0, vma = current->mm->mmap;
1310 i < segs && vma != NULL;
1311 vma = vma->vm_next) {
1312 unsigned long addr = vma->vm_start;
1313 unsigned long len = vma->vm_end - vma->vm_start;
1314
1315 if (!maydump(vma))
1316 continue;
1317 i++;
1318 pr_debug("elf_core_dump: writing %08lx %lx\n", addr, len);
1319 DUMP_WRITE((void __user *)addr, len);
1320 }
1321
1322 if ((off_t) file->f_pos != offset) {
1323 /* Sanity check. */
1324 printk("elf_core_dump: file->f_pos (%ld) != offset (%ld)\n",
1325 (off_t) file->f_pos, offset);
1326 }
1327
1328end_coredump:
1329 set_fs(fs);
1330 return has_dumped;
1331}
1332
1333static int __init init_irix_binfmt(void)
1334{
1335 extern int init_inventory(void);
1336 extern asmlinkage unsigned long sys_call_table;
1337 extern asmlinkage unsigned long sys_call_table_irix5;
1338
1339 init_inventory();
1340
1341 /*
1342 * Copy the IRIX5 syscall table (8000 bytes) into the main syscall
1343 * table. The IRIX5 calls are located by an offset of 8000 bytes
1344 * from the beginning of the main table.
1345 */
1346 memcpy((void *) ((unsigned long) &sys_call_table + 8000),
1347 &sys_call_table_irix5, 8000);
1348
1349 return register_binfmt(&irix_format);
1350}
1351
1352static void __exit exit_irix_binfmt(void)
1353{
1354 /*
1355 * Remove the Irix ELF loader.
1356 */
1357 unregister_binfmt(&irix_format);
1358}
1359
1360module_init(init_irix_binfmt)
1361module_exit(exit_irix_binfmt)
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-28 03:20:54 -0500