Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * a.out loader for x86-64 | |
3 | * | |
4 | * Copyright (C) 1991, 1992, 1996 Linus Torvalds | |
5 | * Hacked together by Andi Kleen | |
6 | */ | |
7 | ||
8 | #include <linux/module.h> | |
9 | ||
10 | #include <linux/time.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/mm.h> | |
13 | #include <linux/mman.h> | |
14 | #include <linux/a.out.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/signal.h> | |
17 | #include <linux/string.h> | |
18 | #include <linux/fs.h> | |
19 | #include <linux/file.h> | |
20 | #include <linux/stat.h> | |
21 | #include <linux/fcntl.h> | |
22 | #include <linux/ptrace.h> | |
23 | #include <linux/user.h> | |
1da177e4 LT |
24 | #include <linux/binfmts.h> |
25 | #include <linux/personality.h> | |
26 | #include <linux/init.h> | |
e5fc3161 | 27 | #include <linux/jiffies.h> |
7d2f551f | 28 | #include <linux/perf_event.h> |
1da177e4 | 29 | |
7c0f6ba6 | 30 | #include <linux/uaccess.h> |
1da177e4 LT |
31 | #include <asm/pgalloc.h> |
32 | #include <asm/cacheflush.h> | |
33 | #include <asm/user32.h> | |
34 | #include <asm/ia32.h> | |
35 | ||
36 | #undef WARN_OLD | |
1da177e4 | 37 | |
71613c3b | 38 | static int load_aout_binary(struct linux_binprm *); |
8edf8bee | 39 | static int load_aout_library(struct file *); |
1da177e4 | 40 | |
7d2f551f AV |
41 | #ifdef CONFIG_COREDUMP |
42 | static int aout_core_dump(struct coredump_params *); | |
43 | ||
44 | static unsigned long get_dr(int n) | |
45 | { | |
46 | struct perf_event *bp = current->thread.ptrace_bps[n]; | |
47 | return bp ? bp->hw.info.address : 0; | |
48 | } | |
1da177e4 LT |
49 | |
50 | /* | |
51 | * fill in the user structure for a core dump.. | |
52 | */ | |
8edf8bee | 53 | static void dump_thread32(struct pt_regs *regs, struct user32 *dump) |
1da177e4 | 54 | { |
8edf8bee | 55 | u32 fs, gs; |
7d2f551f | 56 | memset(dump, 0, sizeof(*dump)); |
1da177e4 LT |
57 | |
58 | /* changed the size calculations - should hopefully work better. lbt */ | |
59 | dump->magic = CMAGIC; | |
60 | dump->start_code = 0; | |
65ea5b03 | 61 | dump->start_stack = regs->sp & ~(PAGE_SIZE - 1); |
1da177e4 | 62 | dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT; |
8edf8bee TG |
63 | dump->u_dsize = ((unsigned long) |
64 | (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT; | |
1da177e4 | 65 | dump->u_dsize -= dump->u_tsize; |
7d2f551f AV |
66 | dump->u_debugreg[0] = get_dr(0); |
67 | dump->u_debugreg[1] = get_dr(1); | |
68 | dump->u_debugreg[2] = get_dr(2); | |
69 | dump->u_debugreg[3] = get_dr(3); | |
8edf8bee | 70 | dump->u_debugreg[6] = current->thread.debugreg6; |
7d2f551f | 71 | dump->u_debugreg[7] = current->thread.ptrace_dr7; |
8edf8bee TG |
72 | |
73 | if (dump->start_stack < 0xc0000000) { | |
74 | unsigned long tmp; | |
75 | ||
76 | tmp = (unsigned long) (0xc0000000 - dump->start_stack); | |
77 | dump->u_ssize = tmp >> PAGE_SHIFT; | |
78 | } | |
1da177e4 | 79 | |
7d2f551f AV |
80 | dump->regs.ebx = regs->bx; |
81 | dump->regs.ecx = regs->cx; | |
82 | dump->regs.edx = regs->dx; | |
83 | dump->regs.esi = regs->si; | |
84 | dump->regs.edi = regs->di; | |
85 | dump->regs.ebp = regs->bp; | |
86 | dump->regs.eax = regs->ax; | |
1da177e4 LT |
87 | dump->regs.ds = current->thread.ds; |
88 | dump->regs.es = current->thread.es; | |
b6edbb1e JF |
89 | savesegment(fs, fs); |
90 | dump->regs.fs = fs; | |
91 | savesegment(gs, gs); | |
92 | dump->regs.gs = gs; | |
7d2f551f AV |
93 | dump->regs.orig_eax = regs->orig_ax; |
94 | dump->regs.eip = regs->ip; | |
1da177e4 | 95 | dump->regs.cs = regs->cs; |
7d2f551f AV |
96 | dump->regs.eflags = regs->flags; |
97 | dump->regs.esp = regs->sp; | |
1da177e4 LT |
98 | dump->regs.ss = regs->ss; |
99 | ||
100 | #if 1 /* FIXME */ | |
101 | dump->u_fpvalid = 0; | |
102 | #else | |
8edf8bee | 103 | dump->u_fpvalid = dump_fpu(regs, &dump->i387); |
1da177e4 LT |
104 | #endif |
105 | } | |
106 | ||
107 | #endif | |
108 | ||
109 | static struct linux_binfmt aout_format = { | |
110 | .module = THIS_MODULE, | |
111 | .load_binary = load_aout_binary, | |
112 | .load_shlib = load_aout_library, | |
7d2f551f | 113 | #ifdef CONFIG_COREDUMP |
1da177e4 LT |
114 | .core_dump = aout_core_dump, |
115 | #endif | |
116 | .min_coredump = PAGE_SIZE | |
117 | }; | |
118 | ||
5d22fc25 | 119 | static int set_brk(unsigned long start, unsigned long end) |
1da177e4 LT |
120 | { |
121 | start = PAGE_ALIGN(start); | |
122 | end = PAGE_ALIGN(end); | |
123 | if (end <= start) | |
5d22fc25 | 124 | return 0; |
864778b1 | 125 | return vm_brk(start, end - start); |
1da177e4 LT |
126 | } |
127 | ||
7d2f551f | 128 | #ifdef CONFIG_COREDUMP |
1da177e4 LT |
129 | /* |
130 | * These are the only things you should do on a core-file: use only these | |
131 | * macros to write out all the necessary info. | |
132 | */ | |
133 | ||
0eead9ab | 134 | #include <linux/coredump.h> |
1da177e4 | 135 | |
7d2f551f | 136 | #define START_DATA(u) (u.u_tsize << PAGE_SHIFT) |
8edf8bee | 137 | #define START_STACK(u) (u.start_stack) |
1da177e4 LT |
138 | |
139 | /* | |
140 | * Routine writes a core dump image in the current directory. | |
141 | * Currently only a stub-function. | |
142 | * | |
143 | * Note that setuid/setgid files won't make a core-dump if the uid/gid | |
144 | * changed due to the set[u|g]id. It's enforced by the "current->mm->dumpable" | |
145 | * field, which also makes sure the core-dumps won't be recursive if the | |
146 | * dumping of the process results in another error.. | |
147 | */ | |
148 | ||
7d2f551f | 149 | static int aout_core_dump(struct coredump_params *cprm) |
1da177e4 LT |
150 | { |
151 | mm_segment_t fs; | |
152 | int has_dumped = 0; | |
153 | unsigned long dump_start, dump_size; | |
154 | struct user32 dump; | |
1da177e4 LT |
155 | |
156 | fs = get_fs(); | |
157 | set_fs(KERNEL_DS); | |
158 | has_dumped = 1; | |
8edf8bee | 159 | strncpy(dump.u_comm, current->comm, sizeof(current->comm)); |
6e16d89b | 160 | dump.u_ar0 = offsetof(struct user32, regs); |
7d2f551f AV |
161 | dump.signal = cprm->siginfo->si_signo; |
162 | dump_thread32(cprm->regs, &dump); | |
1da177e4 | 163 | |
8edf8bee TG |
164 | /* |
165 | * If the size of the dump file exceeds the rlimit, then see | |
166 | * what would happen if we wrote the stack, but not the data | |
167 | * area. | |
168 | */ | |
7d2f551f | 169 | if ((dump.u_dsize + dump.u_ssize + 1) * PAGE_SIZE > cprm->limit) |
1da177e4 LT |
170 | dump.u_dsize = 0; |
171 | ||
8edf8bee | 172 | /* Make sure we have enough room to write the stack and data areas. */ |
7d2f551f | 173 | if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit) |
1da177e4 LT |
174 | dump.u_ssize = 0; |
175 | ||
8edf8bee | 176 | /* make sure we actually have a data and stack area to dump */ |
1da177e4 | 177 | set_fs(USER_DS); |
8edf8bee TG |
178 | if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_DATA(dump), |
179 | dump.u_dsize << PAGE_SHIFT)) | |
1da177e4 | 180 | dump.u_dsize = 0; |
8edf8bee TG |
181 | if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_STACK(dump), |
182 | dump.u_ssize << PAGE_SHIFT)) | |
1da177e4 LT |
183 | dump.u_ssize = 0; |
184 | ||
185 | set_fs(KERNEL_DS); | |
8edf8bee | 186 | /* struct user */ |
43a5d548 AV |
187 | if (!dump_emit(cprm, &dump, sizeof(dump))) |
188 | goto end_coredump; | |
8edf8bee | 189 | /* Now dump all of the user data. Include malloced stuff as well */ |
9b56d543 | 190 | if (!dump_skip(cprm, PAGE_SIZE - sizeof(dump))) |
43a5d548 | 191 | goto end_coredump; |
8edf8bee | 192 | /* now we start writing out the user space info */ |
1da177e4 | 193 | set_fs(USER_DS); |
8edf8bee | 194 | /* Dump the data area */ |
1da177e4 LT |
195 | if (dump.u_dsize != 0) { |
196 | dump_start = START_DATA(dump); | |
197 | dump_size = dump.u_dsize << PAGE_SHIFT; | |
43a5d548 AV |
198 | if (!dump_emit(cprm, (void *)dump_start, dump_size)) |
199 | goto end_coredump; | |
1da177e4 | 200 | } |
8edf8bee | 201 | /* Now prepare to dump the stack area */ |
1da177e4 LT |
202 | if (dump.u_ssize != 0) { |
203 | dump_start = START_STACK(dump); | |
204 | dump_size = dump.u_ssize << PAGE_SHIFT; | |
43a5d548 AV |
205 | if (!dump_emit(cprm, (void *)dump_start, dump_size)) |
206 | goto end_coredump; | |
1da177e4 | 207 | } |
1da177e4 LT |
208 | end_coredump: |
209 | set_fs(fs); | |
210 | return has_dumped; | |
211 | } | |
212 | #endif | |
213 | ||
214 | /* | |
215 | * create_aout_tables() parses the env- and arg-strings in new user | |
216 | * memory and creates the pointer tables from them, and puts their | |
217 | * addresses on the "stack", returning the new stack pointer value. | |
218 | */ | |
219 | static u32 __user *create_aout_tables(char __user *p, struct linux_binprm *bprm) | |
220 | { | |
8edf8bee TG |
221 | u32 __user *argv, *envp, *sp; |
222 | int argc = bprm->argc, envc = bprm->envc; | |
1da177e4 LT |
223 | |
224 | sp = (u32 __user *) ((-(unsigned long)sizeof(u32)) & (unsigned long) p); | |
225 | sp -= envc+1; | |
226 | envp = sp; | |
227 | sp -= argc+1; | |
228 | argv = sp; | |
8edf8bee TG |
229 | put_user((unsigned long) envp, --sp); |
230 | put_user((unsigned long) argv, --sp); | |
231 | put_user(argc, --sp); | |
1da177e4 | 232 | current->mm->arg_start = (unsigned long) p; |
8edf8bee | 233 | while (argc-- > 0) { |
1da177e4 | 234 | char c; |
8edf8bee TG |
235 | |
236 | put_user((u32)(unsigned long)p, argv++); | |
1da177e4 | 237 | do { |
8edf8bee | 238 | get_user(c, p++); |
1da177e4 LT |
239 | } while (c); |
240 | } | |
74019699 | 241 | put_user(0, argv); |
1da177e4 | 242 | current->mm->arg_end = current->mm->env_start = (unsigned long) p; |
8edf8bee | 243 | while (envc-- > 0) { |
1da177e4 | 244 | char c; |
8edf8bee TG |
245 | |
246 | put_user((u32)(unsigned long)p, envp++); | |
1da177e4 | 247 | do { |
8edf8bee | 248 | get_user(c, p++); |
1da177e4 LT |
249 | } while (c); |
250 | } | |
74019699 | 251 | put_user(0, envp); |
1da177e4 LT |
252 | current->mm->env_end = (unsigned long) p; |
253 | return sp; | |
254 | } | |
255 | ||
256 | /* | |
257 | * These are the functions used to load a.out style executables and shared | |
258 | * libraries. There is no binary dependent code anywhere else. | |
259 | */ | |
71613c3b | 260 | static int load_aout_binary(struct linux_binprm *bprm) |
1da177e4 | 261 | { |
8edf8bee | 262 | unsigned long error, fd_offset, rlim; |
71613c3b | 263 | struct pt_regs *regs = current_pt_regs(); |
1da177e4 | 264 | struct exec ex; |
1da177e4 LT |
265 | int retval; |
266 | ||
267 | ex = *((struct exec *) bprm->buf); /* exec-header */ | |
268 | if ((N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != OMAGIC && | |
269 | N_MAGIC(ex) != QMAGIC && N_MAGIC(ex) != NMAGIC) || | |
270 | N_TRSIZE(ex) || N_DRSIZE(ex) || | |
496ad9aa | 271 | i_size_read(file_inode(bprm->file)) < |
8edf8bee | 272 | ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) { |
1da177e4 LT |
273 | return -ENOEXEC; |
274 | } | |
275 | ||
276 | fd_offset = N_TXTOFF(ex); | |
277 | ||
278 | /* Check initial limits. This avoids letting people circumvent | |
279 | * size limits imposed on them by creating programs with large | |
280 | * arrays in the data or bss. | |
281 | */ | |
2854e72b | 282 | rlim = rlimit(RLIMIT_DATA); |
1da177e4 LT |
283 | if (rlim >= RLIM_INFINITY) |
284 | rlim = ~0; | |
285 | if (ex.a_data + ex.a_bss > rlim) | |
286 | return -ENOMEM; | |
287 | ||
288 | /* Flush all traces of the currently running executable */ | |
289 | retval = flush_old_exec(bprm); | |
290 | if (retval) | |
291 | return retval; | |
292 | ||
1da177e4 LT |
293 | /* OK, This is the point of no return */ |
294 | set_personality(PER_LINUX); | |
ce7e5d2d | 295 | set_personality_ia32(false); |
1da177e4 | 296 | |
221af7f8 LT |
297 | setup_new_exec(bprm); |
298 | ||
299 | regs->cs = __USER32_CS; | |
300 | regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 = | |
301 | regs->r13 = regs->r14 = regs->r15 = 0; | |
302 | ||
1da177e4 LT |
303 | current->mm->end_code = ex.a_text + |
304 | (current->mm->start_code = N_TXTADDR(ex)); | |
305 | current->mm->end_data = ex.a_data + | |
306 | (current->mm->start_data = N_DATADDR(ex)); | |
307 | current->mm->brk = ex.a_bss + | |
308 | (current->mm->start_brk = N_BSSADDR(ex)); | |
1da177e4 | 309 | |
6414fa6a | 310 | retval = setup_arg_pages(bprm, IA32_STACK_TOP, EXSTACK_DEFAULT); |
19d860a1 | 311 | if (retval < 0) |
6414fa6a | 312 | return retval; |
6414fa6a | 313 | |
a6f76f23 | 314 | install_exec_creds(bprm); |
1da177e4 LT |
315 | |
316 | if (N_MAGIC(ex) == OMAGIC) { | |
317 | unsigned long text_addr, map_size; | |
1da177e4 LT |
318 | |
319 | text_addr = N_TXTADDR(ex); | |
1da177e4 LT |
320 | map_size = ex.a_text+ex.a_data; |
321 | ||
e4eb1ff6 | 322 | error = vm_brk(text_addr & PAGE_MASK, map_size); |
1da177e4 | 323 | |
5d22fc25 | 324 | if (error) |
1da177e4 | 325 | return error; |
1da177e4 | 326 | |
3dc20cb2 AV |
327 | error = read_code(bprm->file, text_addr, 32, |
328 | ex.a_text + ex.a_data); | |
19d860a1 | 329 | if ((signed long)error < 0) |
1da177e4 | 330 | return error; |
1da177e4 LT |
331 | } else { |
332 | #ifdef WARN_OLD | |
333 | static unsigned long error_time, error_time2; | |
334 | if ((ex.a_text & 0xfff || ex.a_data & 0xfff) && | |
e5fc3161 JL |
335 | (N_MAGIC(ex) != NMAGIC) && |
336 | time_after(jiffies, error_time2 + 5*HZ)) { | |
1da177e4 LT |
337 | printk(KERN_NOTICE "executable not page aligned\n"); |
338 | error_time2 = jiffies; | |
339 | } | |
340 | ||
341 | if ((fd_offset & ~PAGE_MASK) != 0 && | |
e5fc3161 | 342 | time_after(jiffies, error_time + 5*HZ)) { |
8edf8bee TG |
343 | printk(KERN_WARNING |
344 | "fd_offset is not page aligned. Please convert " | |
a455589f AV |
345 | "program: %pD\n", |
346 | bprm->file); | |
1da177e4 LT |
347 | error_time = jiffies; |
348 | } | |
349 | #endif | |
350 | ||
8edf8bee | 351 | if (!bprm->file->f_op->mmap || (fd_offset & ~PAGE_MASK) != 0) { |
864778b1 | 352 | error = vm_brk(N_TXTADDR(ex), ex.a_text+ex.a_data); |
5d22fc25 | 353 | if (error) |
864778b1 MH |
354 | return error; |
355 | ||
3dc20cb2 AV |
356 | read_code(bprm->file, N_TXTADDR(ex), fd_offset, |
357 | ex.a_text+ex.a_data); | |
1da177e4 LT |
358 | goto beyond_if; |
359 | } | |
360 | ||
6be5ceb0 | 361 | error = vm_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, |
8edf8bee TG |
362 | PROT_READ | PROT_EXEC, |
363 | MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | | |
364 | MAP_EXECUTABLE | MAP_32BIT, | |
365 | fd_offset); | |
1da177e4 | 366 | |
19d860a1 | 367 | if (error != N_TXTADDR(ex)) |
1da177e4 | 368 | return error; |
1da177e4 | 369 | |
6be5ceb0 | 370 | error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data, |
1da177e4 | 371 | PROT_READ | PROT_WRITE | PROT_EXEC, |
8edf8bee TG |
372 | MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | |
373 | MAP_EXECUTABLE | MAP_32BIT, | |
1da177e4 | 374 | fd_offset + ex.a_text); |
19d860a1 | 375 | if (error != N_DATADDR(ex)) |
1da177e4 | 376 | return error; |
1da177e4 | 377 | } |
864778b1 | 378 | |
1da177e4 | 379 | beyond_if: |
864778b1 | 380 | error = set_brk(current->mm->start_brk, current->mm->brk); |
5d22fc25 | 381 | if (error) |
864778b1 | 382 | return error; |
1da177e4 | 383 | |
864778b1 | 384 | set_binfmt(&aout_format); |
1da177e4 | 385 | |
1da177e4 LT |
386 | current->mm->start_stack = |
387 | (unsigned long)create_aout_tables((char __user *)bprm->p, bprm); | |
388 | /* start thread */ | |
b6edbb1e JF |
389 | loadsegment(fs, 0); |
390 | loadsegment(ds, __USER32_DS); | |
391 | loadsegment(es, __USER32_DS); | |
8edf8bee | 392 | load_gs_index(0); |
65ea5b03 PA |
393 | (regs)->ip = ex.a_entry; |
394 | (regs)->sp = current->mm->start_stack; | |
395 | (regs)->flags = 0x200; | |
1da177e4 LT |
396 | (regs)->cs = __USER32_CS; |
397 | (regs)->ss = __USER32_DS; | |
f891dd18 AK |
398 | regs->r8 = regs->r9 = regs->r10 = regs->r11 = |
399 | regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0; | |
1da177e4 | 400 | set_fs(USER_DS); |
1da177e4 LT |
401 | return 0; |
402 | } | |
403 | ||
404 | static int load_aout_library(struct file *file) | |
405 | { | |
8edf8bee | 406 | unsigned long bss, start_addr, len, error; |
1da177e4 LT |
407 | int retval; |
408 | struct exec ex; | |
409 | ||
1da177e4 LT |
410 | |
411 | retval = -ENOEXEC; | |
412 | error = kernel_read(file, 0, (char *) &ex, sizeof(ex)); | |
413 | if (error != sizeof(ex)) | |
414 | goto out; | |
415 | ||
416 | /* We come in here for the regular a.out style of shared libraries */ | |
417 | if ((N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != QMAGIC) || N_TRSIZE(ex) || | |
418 | N_DRSIZE(ex) || ((ex.a_entry & 0xfff) && N_MAGIC(ex) == ZMAGIC) || | |
496ad9aa | 419 | i_size_read(file_inode(file)) < |
8edf8bee | 420 | ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) { |
1da177e4 LT |
421 | goto out; |
422 | } | |
423 | ||
424 | if (N_FLAGS(ex)) | |
425 | goto out; | |
426 | ||
427 | /* For QMAGIC, the starting address is 0x20 into the page. We mask | |
428 | this off to get the starting address for the page */ | |
429 | ||
430 | start_addr = ex.a_entry & 0xfffff000; | |
431 | ||
432 | if ((N_TXTOFF(ex) & ~PAGE_MASK) != 0) { | |
1da177e4 LT |
433 | #ifdef WARN_OLD |
434 | static unsigned long error_time; | |
e5fc3161 | 435 | if (time_after(jiffies, error_time + 5*HZ)) { |
8edf8bee TG |
436 | printk(KERN_WARNING |
437 | "N_TXTOFF is not page aligned. Please convert " | |
a455589f AV |
438 | "library: %pD\n", |
439 | file); | |
1da177e4 LT |
440 | error_time = jiffies; |
441 | } | |
442 | #endif | |
864778b1 | 443 | retval = vm_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss); |
5d22fc25 | 444 | if (retval) |
864778b1 | 445 | goto out; |
8edf8bee | 446 | |
3dc20cb2 AV |
447 | read_code(file, start_addr, N_TXTOFF(ex), |
448 | ex.a_text + ex.a_data); | |
1da177e4 LT |
449 | retval = 0; |
450 | goto out; | |
451 | } | |
452 | /* Now use mmap to map the library into memory. */ | |
6be5ceb0 | 453 | error = vm_mmap(file, start_addr, ex.a_text + ex.a_data, |
1da177e4 LT |
454 | PROT_READ | PROT_WRITE | PROT_EXEC, |
455 | MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_32BIT, | |
456 | N_TXTOFF(ex)); | |
1da177e4 LT |
457 | retval = error; |
458 | if (error != start_addr) | |
459 | goto out; | |
460 | ||
461 | len = PAGE_ALIGN(ex.a_text + ex.a_data); | |
462 | bss = ex.a_text + ex.a_data + ex.a_bss; | |
463 | if (bss > len) { | |
5d22fc25 LT |
464 | retval = vm_brk(start_addr + len, bss - len); |
465 | if (retval) | |
1da177e4 LT |
466 | goto out; |
467 | } | |
468 | retval = 0; | |
469 | out: | |
470 | return retval; | |
471 | } | |
472 | ||
473 | static int __init init_aout_binfmt(void) | |
474 | { | |
8fc3dc5a AV |
475 | register_binfmt(&aout_format); |
476 | return 0; | |
1da177e4 LT |
477 | } |
478 | ||
479 | static void __exit exit_aout_binfmt(void) | |
480 | { | |
481 | unregister_binfmt(&aout_format); | |
482 | } | |
483 | ||
484 | module_init(init_aout_binfmt); | |
485 | module_exit(exit_aout_binfmt); | |
486 | MODULE_LICENSE("GPL"); |