#include <linux/fcntl.h>
#include <linux/ptrace.h>
#include <linux/user.h>
-#include <linux/slab.h>
#include <linux/binfmts.h>
#include <linux/personality.h>
#include <linux/init.h>
+#include <linux/coredump.h>
+#include <linux/slab.h>
#include <asm/system.h>
#include <asm/uaccess.h>
static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs);
static int load_aout_library(struct file*);
-static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit);
+static int aout_core_dump(struct coredump_params *cprm);
static struct linux_binfmt aout_format = {
.module = THIS_MODULE,
}
/*
- * These are the only things you should do on a core-file: use only these
- * macros to write out all the necessary info.
- */
-
-static int dump_write(struct file *file, const void *addr, int nr)
-{
- return file->f_op->write(file, addr, nr, &file->f_pos) == nr;
-}
-
-#define DUMP_WRITE(addr, nr) \
- if (!dump_write(file, (void *)(addr), (nr))) \
- goto end_coredump;
-
-#define DUMP_SEEK(offset) \
-if (file->f_op->llseek) { \
- if (file->f_op->llseek(file,(offset),0) != (offset)) \
- goto end_coredump; \
-} else file->f_pos = (offset)
-
-/*
* Routine writes a core dump image in the current directory.
* Currently only a stub-function.
*
* dumping of the process results in another error..
*/
-static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit)
+static int aout_core_dump(struct coredump_params *cprm)
{
+ struct file *file = cprm->file;
mm_segment_t fs;
int has_dumped = 0;
- unsigned long dump_start, dump_size;
+ void __user *dump_start;
+ int dump_size;
struct user dump;
-#if defined(__alpha__)
-# define START_DATA(u) (u.start_data)
-#elif defined(__arm__)
-# define START_DATA(u) ((u.u_tsize << PAGE_SHIFT) + u.start_code)
-#elif defined(__i386__) || defined(__mc68000__) || defined(__arch_um__)
-# define START_DATA(u) (u.u_tsize << PAGE_SHIFT)
+#ifdef __alpha__
+# define START_DATA(u) ((void __user *)u.start_data)
+#else
+# define START_DATA(u) ((void __user *)((u.u_tsize << PAGE_SHIFT) + \
+ u.start_code))
#endif
-# define START_STACK(u) (u.start_stack)
+# define START_STACK(u) ((void __user *)u.start_stack)
fs = get_fs();
set_fs(KERNEL_DS);
current->flags |= PF_DUMPCORE;
strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm));
dump.u_ar0 = offsetof(struct user, regs);
- dump.signal = signr;
- aout_dump_thread(regs, &dump);
+ dump.signal = cprm->signr;
+ aout_dump_thread(cprm->regs, &dump);
/* If the size of the dump file exceeds the rlimit, then see what would happen
if we wrote the stack, but not the data area. */
- if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > limit)
+ if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit)
dump.u_dsize = 0;
/* Make sure we have enough room to write the stack and data areas. */
- if ((dump.u_ssize + 1) * PAGE_SIZE > limit)
+ if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit)
dump.u_ssize = 0;
/* make sure we actually have a data and stack area to dump */
set_fs(USER_DS);
- if (!access_ok(VERIFY_READ, (void __user *)START_DATA(dump), dump.u_dsize << PAGE_SHIFT))
+ if (!access_ok(VERIFY_READ, START_DATA(dump), dump.u_dsize << PAGE_SHIFT))
dump.u_dsize = 0;
- if (!access_ok(VERIFY_READ, (void __user *)START_STACK(dump), dump.u_ssize << PAGE_SHIFT))
+ if (!access_ok(VERIFY_READ, START_STACK(dump), dump.u_ssize << PAGE_SHIFT))
dump.u_ssize = 0;
set_fs(KERNEL_DS);
/* struct user */
- DUMP_WRITE(&dump,sizeof(dump));
+ if (!dump_write(file, &dump, sizeof(dump)))
+ goto end_coredump;
/* Now dump all of the user data. Include malloced stuff as well */
- DUMP_SEEK(PAGE_SIZE);
+ if (!dump_seek(cprm->file, PAGE_SIZE - sizeof(dump)))
+ goto end_coredump;
/* now we start writing out the user space info */
set_fs(USER_DS);
/* Dump the data area */
if (dump.u_dsize != 0) {
dump_start = START_DATA(dump);
dump_size = dump.u_dsize << PAGE_SHIFT;
- DUMP_WRITE(dump_start,dump_size);
+ if (!dump_write(file, dump_start, dump_size))
+ goto end_coredump;
}
/* Now prepare to dump the stack area */
if (dump.u_ssize != 0) {
dump_start = START_STACK(dump);
dump_size = dump.u_ssize << PAGE_SHIFT;
- DUMP_WRITE(dump_start,dump_size);
+ if (!dump_write(file, dump_start, dump_size))
+ goto end_coredump;
}
/* Finally dump the task struct. Not be used by gdb, but could be useful */
set_fs(KERNEL_DS);
- DUMP_WRITE(current,sizeof(*current));
+ if (!dump_write(file, current, sizeof(*current)))
+ goto end_coredump;
end_coredump:
set_fs(fs);
return has_dumped;
put_user(0, --sp);
if (bprm->loader) {
put_user(0, --sp);
- put_user(0x3eb, --sp);
+ put_user(1003, --sp);
put_user(bprm->loader, --sp);
- put_user(0x3ea, --sp);
+ put_user(1002, --sp);
}
put_user(bprm->exec, --sp);
- put_user(0x3e9, --sp);
+ put_user(1001, --sp);
#endif
sp -= envc+1;
envp = (char __user * __user *) sp;
sp -= argc+1;
argv = (char __user * __user *) sp;
-#if defined(__i386__) || defined(__mc68000__) || defined(__arm__) || defined(__arch_um__)
+#ifndef __alpha__
put_user((unsigned long) envp,--sp);
put_user((unsigned long) argv,--sp);
#endif
* size limits imposed on them by creating programs with large
* arrays in the data or bss.
*/
- rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
+ rlim = rlimit(RLIMIT_DATA);
if (rlim >= RLIM_INFINITY)
rlim = ~0;
if (ex.a_data + ex.a_bss > rlim)
return retval;
/* OK, This is the point of no return */
-#if defined(__alpha__)
+#ifdef __alpha__
SET_AOUT_PERSONALITY(bprm, ex);
#else
set_personality(PER_LINUX);
#endif
+ setup_new_exec(bprm);
current->mm->end_code = ex.a_text +
(current->mm->start_code = N_TXTADDR(ex));
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff