patch-2.1.40 linux/arch/sparc64/kernel/sparcelf32.c

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diff -u --recursive --new-file v2.1.39/linux/arch/sparc64/kernel/sparcelf32.c linux/arch/sparc64/kernel/sparcelf32.c
@@ -1,1281 +0,0 @@
-/* sparcelf32.c: Support 32-bit Sparc ELF binaries on Ultra.
- *
- * This is just binfmt_elf.c with hooks so that the types are those
- * for a 32-bit ELF binaries.
- */
-
-/* This makes it work. */
-#define ELF_ARCH	EM_SPARC
-#define ELF_CLASS	ELFCLASS32
-#define ELF_DATA	ELFDATA2MSB;
-
-/*
- * linux/fs/binfmt_elf.c
- *
- * These are the functions used to load ELF format executables as used
- * on SVr4 machines.  Information on the format may be found in the book
- * "UNIX SYSTEM V RELEASE 4 Programmers Guide: Ansi C and Programming Support
- * Tools".
- *
- * Copyright 1993, 1994: Eric Youngdale (ericy@cais.com).
- */
-
-#include <linux/module.h>
-
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/a.out.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/binfmts.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/malloc.h>
-#include <linux/shm.h>
-#include <linux/personality.h>
-#include <linux/elfcore.h>
-#include <linux/init.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-
-#include <linux/config.h>
-
-#define DLINFO_ITEMS 12
-
-#include <linux/elf.h>
-
-static int load_elf32_binary(struct linux_binprm * bprm, struct pt_regs * regs);
-static int load_elf32_library(int fd);
-extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
-extern void dump_thread(struct pt_regs *, struct user *);
-
-extern unsigned long get_unmapped_area(unsigned long addr, unsigned long len);
-
-/*
- * If we don't support core dumping, then supply a NULL so we
- * don't even try.
- */
-#ifdef USE_ELF_CORE_DUMP
-static int elf32_core_dump(long signr, struct pt_regs * regs);
-#else
-#define elf32_core_dump	NULL
-#endif
-
-#define ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(ELF_EXEC_PAGESIZE-1))
-#define ELF_PAGEOFFSET(_v) ((_v) & (ELF_EXEC_PAGESIZE-1))
-
-static struct linux_binfmt elf32_format = {
-#ifndef MODULE
-	NULL, NULL, load_elf32_binary, load_elf32_library, elf32_core_dump
-#else
-	NULL, &__this_module, load_elf32_binary, load_elf32_library, elf32_core_dump
-#endif
-};
-
-static void set_brk(unsigned long start, unsigned long end)
-{
-	start = PAGE_ALIGN(start);
-	end = PAGE_ALIGN(end);
-	if (end <= start)
-		return;
-	do_mmap(NULL, start, end - start,
-		PROT_READ | PROT_WRITE | PROT_EXEC,
-		MAP_FIXED | MAP_PRIVATE, 0);
-}
-
-
-/* We need to explicitly zero any fractional pages
-   after the data section (i.e. bss).  This would
-   contain the junk from the file that should not
-   be in memory */
-
-
-static void padzero(unsigned long elf_bss)
-{
-	unsigned long nbyte;
-
-	nbyte = elf_bss & (PAGE_SIZE-1);
-	if (nbyte) {
-		nbyte = PAGE_SIZE - nbyte;
-		clear_user((void *) elf_bss, nbyte);
-	}
-}
-
-__u32 *create_elf32_tables(char *p, int argc, int envc,
-			   struct elfhdr * exec,
-			   unsigned long load_addr,
-			   unsigned long interp_load_addr, int ibcs)
-{
-	__u32 *argv, *envp;
-	__u32 *sp, *csp;
-
-	/*
-	 * Force 16 byte alignment here for generality.
-	 */
-	sp = (__u32 *) (~15UL & (unsigned long) p);
-	csp = sp;
-	csp -= exec ? DLINFO_ITEMS*2 : 2;
-	csp -= envc+1;
-	csp -= argc+1;
-	if (!(((unsigned long) csp) & 4))
-		sp--;
-
-	/*
-	 * Put the ELF interpreter info on the stack
-	 */
-#define NEW_AUX_ENT(nr, id, val) \
-	  __put_user ((id), sp+(nr*2)); \
-	  __put_user ((val), sp+(nr*2+1)); \
-
-	sp -= 2;
-	NEW_AUX_ENT(0, AT_NULL, 0);
-
-	if (exec) {
-		sp -= 11*2;
-
-	  NEW_AUX_ENT (0, AT_PHDR, load_addr + exec->e_phoff);
-	  NEW_AUX_ENT (1, AT_PHENT, sizeof (struct elf_phdr));
-	  NEW_AUX_ENT (2, AT_PHNUM, exec->e_phnum);
-	  NEW_AUX_ENT (3, AT_PAGESZ, PAGE_SIZE);
-	  NEW_AUX_ENT (4, AT_BASE, interp_load_addr);
-	  NEW_AUX_ENT (5, AT_FLAGS, 0);
-	  NEW_AUX_ENT (6, AT_ENTRY, (__u32) exec->e_entry);
-	  NEW_AUX_ENT (7, AT_UID, (__u32) current->uid);
-	  NEW_AUX_ENT (8, AT_EUID, (__u32) current->euid);
-	  NEW_AUX_ENT (9, AT_GID, (__u32) current->gid);
-	  NEW_AUX_ENT (10, AT_EGID, (__u32) current->egid);
-	}
-#undef NEW_AUX_ENT
-
-	sp -= envc+1;
-	envp = (__u32 *) sp;
-	sp -= argc+1;
-	argv = (__u32 *) sp;
-	if (!ibcs) {
-		__put_user(((__u32)(long) envp),--sp);
-		__put_user(((__u32)(long) argv),--sp);
-	}
-
-	__put_user((__u32)argc,--sp);
-	current->mm->arg_start = (unsigned long) p;
-	while (argc-->0) {
-		__put_user(((__u32)(long)p),argv++);
-		p += strlen_user(p);
-	}
-	__put_user(NULL, argv);
-	current->mm->arg_end = current->mm->env_start = (unsigned long) p;
-	while (envc-->0) {
-		__put_user(((__u32)(long)p),envp++);
-		p += strlen_user(p);
-	}
-	__put_user(NULL, envp);
-	current->mm->env_end = (unsigned long) p;
-	return sp;
-}
-
-
-/* This is much more generalized than the library routine read function,
-   so we keep this separate.  Technically the library read function
-   is only provided so that we can read a.out libraries that have
-   an ELF header */
-
-static unsigned long load_elf32_interp(struct elfhdr * interp_elf_ex,
-				       struct inode * interpreter_inode,
-				       unsigned long *interp_load_addr)
-{
-	struct file * file;
-	struct elf_phdr *elf_phdata  =  NULL;
-	struct elf_phdr *eppnt;
-	unsigned long load_addr;
-	int load_addr_set = 0;
-	int elf_exec_fileno;
-	int retval;
-	unsigned long last_bss, elf_bss;
-	unsigned long error;
-	int i;
-
-	elf_bss = 0;
-	last_bss = 0;
-	error = load_addr = 0;
-
-	/* First of all, some simple consistency checks */
-	if ((interp_elf_ex->e_type != ET_EXEC &&
-	    interp_elf_ex->e_type != ET_DYN) ||
-	   !elf_check_arch(interp_elf_ex->e_machine) ||
-	   (!interpreter_inode->i_op ||
-	    !interpreter_inode->i_op->default_file_ops->mmap)){
-		return ~0UL;
-	}
-
-	/* Now read in all of the header information */
-
-	if (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > PAGE_SIZE)
-	    return ~0UL;
-
-	elf_phdata =  (struct elf_phdr *)
-		kmalloc(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum,
-			GFP_KERNEL);
-	if (!elf_phdata)
-	  return ~0UL;
-
-	/*
-	 * If the size of this structure has changed, then punt, since
-	 * we will be doing the wrong thing.
-	 */
-	if (interp_elf_ex->e_phentsize != sizeof(struct elf_phdr))
-	  {
-	    kfree(elf_phdata);
-	    return ~0UL;
-	  }
-
-	retval = read_exec(interpreter_inode, interp_elf_ex->e_phoff,
-			   (char *) elf_phdata,
-			   sizeof(struct elf_phdr) * interp_elf_ex->e_phnum, 1);
-
-	if (retval < 0) {
-		kfree (elf_phdata);
-		return retval;
- 	}
-
-	elf_exec_fileno = open_inode(interpreter_inode, O_RDONLY);
-	if (elf_exec_fileno < 0) {
-	  kfree(elf_phdata);
-	  return ~0UL;
-	}
-
-	file = current->files->fd[elf_exec_fileno];
-
-	eppnt = elf_phdata;
-	for(i=0; i<interp_elf_ex->e_phnum; i++, eppnt++)
-	  if (eppnt->p_type == PT_LOAD) {
-	    int elf_type = MAP_PRIVATE | MAP_DENYWRITE;
-	    int elf_prot = 0;
-	    unsigned long vaddr = 0;
-	    unsigned long k;
-
-	    if (eppnt->p_flags & PF_R) elf_prot =  PROT_READ;
-	    if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
-	    if (eppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
-	    if (interp_elf_ex->e_type == ET_EXEC || load_addr_set) {
-	    	elf_type |= MAP_FIXED;
-	    	vaddr = eppnt->p_vaddr;
-	    } else {
-		load_addr = get_unmapped_area(0, eppnt->p_filesz +
-					ELF_PAGEOFFSET(eppnt->p_vaddr));
-	    }
-
-	    error = do_mmap(file,
-			    load_addr + ELF_PAGESTART(vaddr),
-			    eppnt->p_filesz + ELF_PAGEOFFSET(eppnt->p_vaddr),
-			    elf_prot,
-			    elf_type,
-			    eppnt->p_offset - ELF_PAGEOFFSET(eppnt->p_vaddr));
-
-	    if (error > -1024UL) {
-	      /* Real error */
-	      sys_close(elf_exec_fileno);
-	      kfree(elf_phdata);
-	      return ~0UL;
-	    }
-
-	    if (!load_addr_set && interp_elf_ex->e_type == ET_DYN) {
-	      load_addr = error;
-	      load_addr_set = 1;
-	    }
-
-	    /*
-	     * Find the end of the file  mapping for this phdr, and keep
-	     * track of the largest address we see for this.
-	     */
-	    k = load_addr + eppnt->p_vaddr + eppnt->p_filesz;
-	    if (k > elf_bss) elf_bss = k;
-
-	    /*
-	     * Do the same thing for the memory mapping - between
-	     * elf_bss and last_bss is the bss section.
-	     */
-	    k = load_addr + eppnt->p_memsz + eppnt->p_vaddr;
-	    if (k > last_bss) last_bss = k;
-	  }
-
-	/* Now use mmap to map the library into memory. */
-
-	sys_close(elf_exec_fileno);
-
-	/*
-	 * Now fill out the bss section.  First pad the last page up
-	 * to the page boundary, and then perform a mmap to make sure
-	 * that there are zeromapped pages up to and including the last
-	 * bss page.
-	 */
-	padzero(elf_bss);
-	elf_bss = ELF_PAGESTART(elf_bss + ELF_EXEC_PAGESIZE - 1); /* What we have mapped so far */
-
-	/* Map the last of the bss segment */
-	if (last_bss > elf_bss)
-	  do_mmap(NULL, elf_bss, last_bss-elf_bss,
-		  PROT_READ|PROT_WRITE|PROT_EXEC,
-		  MAP_FIXED|MAP_PRIVATE, 0);
-	kfree(elf_phdata);
-
-	*interp_load_addr = load_addr;
-	return ((unsigned long) interp_elf_ex->e_entry) + load_addr;
-}
-
-static unsigned long load_aout32_interp(struct exec * interp_ex,
-			     struct inode * interpreter_inode)
-{
-  int retval;
-  unsigned long elf_entry;
-
-  current->mm->brk = interp_ex->a_bss +
-    (current->mm->end_data = interp_ex->a_data +
-     (current->mm->end_code = interp_ex->a_text));
-  elf_entry = interp_ex->a_entry;
-
-
-  if (N_MAGIC(*interp_ex) == OMAGIC) {
-    do_mmap(NULL, 0, interp_ex->a_text+interp_ex->a_data,
-	    PROT_READ|PROT_WRITE|PROT_EXEC,
-	    MAP_FIXED|MAP_PRIVATE, 0);
-    retval = read_exec(interpreter_inode, 32, (char *) 0,
-		       interp_ex->a_text+interp_ex->a_data, 0);
-  } else if (N_MAGIC(*interp_ex) == ZMAGIC || N_MAGIC(*interp_ex) == QMAGIC) {
-    do_mmap(NULL, 0, interp_ex->a_text+interp_ex->a_data,
-	    PROT_READ|PROT_WRITE|PROT_EXEC,
-	    MAP_FIXED|MAP_PRIVATE, 0);
-    retval = read_exec(interpreter_inode,
-		       N_TXTOFF(*interp_ex) ,
-		       (char *) N_TXTADDR(*interp_ex),
-		       interp_ex->a_text+interp_ex->a_data, 0);
-  } else
-    retval = -1;
-
-  if (retval >= 0)
-    do_mmap(NULL, ELF_PAGESTART(interp_ex->a_text + interp_ex->a_data + ELF_EXEC_PAGESIZE - 1),
-	    interp_ex->a_bss,
-	    PROT_READ|PROT_WRITE|PROT_EXEC,
-	    MAP_FIXED|MAP_PRIVATE, 0);
-  if (retval < 0) return ~0UL;
-  return elf_entry;
-}
-
-/*
- * These are the functions used to load ELF style executables and shared
- * libraries.  There is no binary dependent code anywhere else.
- */
-
-#define INTERPRETER_NONE 0
-#define INTERPRETER_AOUT 1
-#define INTERPRETER_ELF 2
-
-static inline int
-do_load_elf32_binary(struct linux_binprm * bprm, struct pt_regs * regs)
-{
-	struct elfhdr elf_ex;
-	struct elfhdr interp_elf_ex;
-	struct file * file;
-  	struct exec interp_ex;
-	struct inode *interpreter_inode;
-	unsigned long load_addr;
-	int load_addr_set = 0;
-	unsigned int interpreter_type = INTERPRETER_NONE;
-	unsigned char ibcs2_interpreter;
-	int i;
-	int old_fs;
-	int error;
-	struct elf_phdr * elf_ppnt, *elf_phdata;
-	int elf_exec_fileno;
-	unsigned long elf_bss, k, elf_brk;
-	int retval;
-	char * elf_interpreter;
-	unsigned long elf_entry, interp_load_addr = 0;
-	int status;
-	unsigned long start_code, end_code, end_data;
-	unsigned long elf_stack;
-	char passed_fileno[6];
-
-	ibcs2_interpreter = 0;
-	status = 0;
-	load_addr = 0;
-	elf_ex = *((struct elfhdr *) bprm->buf);	  /* exec-header */
-
-	if (elf_ex.e_ident[0] != 0x7f ||
-	    strncmp(&elf_ex.e_ident[1], "ELF",3) != 0) {
-		return  -ENOEXEC;
-	}
-
-
-	/* First of all, some simple consistency checks */
-	if ((elf_ex.e_type != ET_EXEC &&
-	    elf_ex.e_type != ET_DYN) ||
-	   (! elf_check_arch(elf_ex.e_machine)) ||
-	   (!bprm->inode->i_op || !bprm->inode->i_op->default_file_ops ||
-	    !bprm->inode->i_op->default_file_ops->mmap)){
-		return -ENOEXEC;
-	}
-
-	/* Now read in all of the header information */
-
-	elf_phdata = (struct elf_phdr *) kmalloc(elf_ex.e_phentsize *
-						 elf_ex.e_phnum, GFP_KERNEL);
-	if (elf_phdata == NULL) {
-		return -ENOMEM;
-	}
-
-	retval = read_exec(bprm->inode, elf_ex.e_phoff, (char *) elf_phdata,
-			   elf_ex.e_phentsize * elf_ex.e_phnum, 1);
-	if (retval < 0) {
-		kfree (elf_phdata);
-		return retval;
-	}
-
-	elf_ppnt = elf_phdata;
-
-	elf_bss = 0;
-	elf_brk = 0;
-
-	elf_exec_fileno = open_inode(bprm->inode, O_RDONLY);
-
-	if (elf_exec_fileno < 0) {
-		kfree (elf_phdata);
-		return elf_exec_fileno;
-	}
-
-	file = current->files->fd[elf_exec_fileno];
-
-	elf_stack = ~0UL;
-	elf_interpreter = NULL;
-	start_code = ~0UL;
-	end_code = 0;
-	end_data = 0;
-
-	for(i=0;i < elf_ex.e_phnum; i++){
-		if (elf_ppnt->p_type == PT_INTERP) {
-		  	if ( elf_interpreter != NULL )
-			{
-				kfree (elf_phdata);
-				kfree(elf_interpreter);
-				sys_close(elf_exec_fileno);
-				return -EINVAL;
-			}
-
-			/* This is the program interpreter used for
-			 * shared libraries - for now assume that this
-			 * is an a.out format binary
-			 */
-
-			elf_interpreter = (char *) kmalloc(elf_ppnt->p_filesz,
-							   GFP_KERNEL);
-			if (elf_interpreter == NULL) {
-				kfree (elf_phdata);
-				sys_close(elf_exec_fileno);
-				return -ENOMEM;
-			}
-
-			retval = read_exec(bprm->inode,elf_ppnt->p_offset,
-					   elf_interpreter,
-					   elf_ppnt->p_filesz, 1);
-			/* If the program interpreter is one of these two,
-			   then assume an iBCS2 image. Otherwise assume
-			   a native linux image. */
-			if (strcmp(elf_interpreter,"/usr/lib/libc.so.1") == 0 ||
-			    strcmp(elf_interpreter,"/usr/lib/ld.so.1") == 0)
-			  ibcs2_interpreter = 1;
-#if 0
-			printk("Using ELF interpreter %s\n", elf_interpreter);
-#endif
-			if (retval >= 0) {
-				old_fs = get_fs(); /* This could probably be optimized */
-				set_fs(get_ds());
-				retval = open_namei(elf_interpreter, 0, 0,
-						    &interpreter_inode, NULL);
-				set_fs(old_fs);
-			}
-
-			if (retval >= 0)
-				retval = read_exec(interpreter_inode,0,bprm->buf,128, 1);
-
-			if (retval >= 0) {
-				interp_ex = *((struct exec *) bprm->buf);		/* exec-header */
-				interp_elf_ex = *((struct elfhdr *) bprm->buf);	  /* exec-header */
-
-			}
-			if (retval < 0) {
-				kfree (elf_phdata);
-				kfree(elf_interpreter);
-				sys_close(elf_exec_fileno);
-				return retval;
-			}
-		}
-		elf_ppnt++;
-	}
-
-	/* Some simple consistency checks for the interpreter */
-	if (elf_interpreter){
-		interpreter_type = INTERPRETER_ELF | INTERPRETER_AOUT;
-
-		/* Now figure out which format our binary is */
-		if ((N_MAGIC(interp_ex) != OMAGIC) &&
-		    (N_MAGIC(interp_ex) != ZMAGIC) &&
-		    (N_MAGIC(interp_ex) != QMAGIC))
-		  interpreter_type = INTERPRETER_ELF;
-
-		if (interp_elf_ex.e_ident[0] != 0x7f ||
-		    strncmp(&interp_elf_ex.e_ident[1], "ELF",3) != 0)
-		  interpreter_type &= ~INTERPRETER_ELF;
-
-		if (!interpreter_type)
-		  {
-		    kfree(elf_interpreter);
-		    kfree(elf_phdata);
-		    sys_close(elf_exec_fileno);
-		    return -ELIBBAD;
-		  }
-	}
-
-	/* OK, we are done with that, now set up the arg stuff,
-	   and then start this sucker up */
-
-	if (!bprm->sh_bang) {
-		char * passed_p;
-
-		if (interpreter_type == INTERPRETER_AOUT) {
-		  sprintf(passed_fileno, "%d", elf_exec_fileno);
-		  passed_p = passed_fileno;
-
-		  if (elf_interpreter) {
-		    bprm->p = copy_strings(1,&passed_p,bprm->page,bprm->p,2);
-		    bprm->argc++;
-		  }
-		}
-		if (!bprm->p) {
-			if (elf_interpreter) {
-			      kfree(elf_interpreter);
-			}
-			kfree (elf_phdata);
-			sys_close(elf_exec_fileno);
-			return -E2BIG;
-		}
-	}
-
-	/* OK, This is the point of no return */
-	flush_old_exec(bprm);
-
-	current->mm->end_data = 0;
-	current->mm->end_code = 0;
-	current->mm->start_mmap = ELF_START_MMAP;
-	current->mm->mmap = NULL;
-	elf_entry = (unsigned long) elf_ex.e_entry;
-
-	/* Do this so that we can load the interpreter, if need be.  We will
-	   change some of these later */
-	current->mm->rss = 0;
-	current->tss.flags |= SPARC_FLAG_32BIT;
-	bprm->p = setup_arg_pages(bprm->p, bprm);
-	current->mm->start_stack = bprm->p;
-
-	/* Now we do a little grungy work by mmaping the ELF image into
-	   the correct location in memory.  At this point, we assume that
-	   the image should be loaded at fixed address, not at a variable
-	   address. */
-
-	old_fs = get_fs();
-	set_fs(get_ds());
-	for(i = 0, elf_ppnt = elf_phdata; i < elf_ex.e_phnum; i++, elf_ppnt++) {
-		if (elf_ppnt->p_type == PT_LOAD) {
-			int elf_prot = 0;
-			if (elf_ppnt->p_flags & PF_R) elf_prot |= PROT_READ;
-			if (elf_ppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
-			if (elf_ppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
-
-			error = do_mmap(file,
-					ELF_PAGESTART(elf_ppnt->p_vaddr),
-					(elf_ppnt->p_filesz +
-					 ELF_PAGEOFFSET(elf_ppnt->p_vaddr)),
-					elf_prot,
-					(MAP_FIXED | MAP_PRIVATE |
-					 MAP_DENYWRITE | MAP_EXECUTABLE),
-					(elf_ppnt->p_offset -
-					 ELF_PAGEOFFSET(elf_ppnt->p_vaddr)));
-
-#ifdef LOW_ELF_STACK
-			if (ELF_PAGESTART(elf_ppnt->p_vaddr) < elf_stack)
-				elf_stack = ELF_PAGESTART(elf_ppnt->p_vaddr);
-#endif
-
-			if (!load_addr_set) {
-			  load_addr = elf_ppnt->p_vaddr - elf_ppnt->p_offset;
-			  load_addr_set = 1;
-			}
-			k = elf_ppnt->p_vaddr;
-			if (k < start_code) start_code = k;
-			k = elf_ppnt->p_vaddr + elf_ppnt->p_filesz;
-			if (k > elf_bss) elf_bss = k;
-#if 1
-			if ((elf_ppnt->p_flags & PF_X) && end_code <  k)
-#else
-			if ( !(elf_ppnt->p_flags & PF_W) && end_code <  k)
-#endif
-				end_code = k;
-			if (end_data < k) end_data = k;
-			k = elf_ppnt->p_vaddr + elf_ppnt->p_memsz;
-			if (k > elf_brk) elf_brk = k;
-		}
-	}
-	set_fs(old_fs);
-
-	if (elf_interpreter) {
-		if (interpreter_type & 1)
-			elf_entry = load_aout32_interp(&interp_ex,
-						       interpreter_inode);
-		else if (interpreter_type & 2)
-			elf_entry = load_elf32_interp(&interp_elf_ex,
-						      interpreter_inode,
-						      &interp_load_addr);
-
-		iput(interpreter_inode);
-		kfree(elf_interpreter);
-
-		if (elf_entry == ~0UL) {
-			printk("Unable to load interpreter\n");
-			kfree(elf_phdata);
-			send_sig(SIGSEGV, current, 0);
-			return 0;
-		}
-	}
-
-	kfree(elf_phdata);
-
-	if (interpreter_type != INTERPRETER_AOUT) sys_close(elf_exec_fileno);
-	current->personality = (ibcs2_interpreter ? PER_SVR4 : PER_LINUX);
-
-	if (current->exec_domain && current->exec_domain->module)
-		__MOD_DEC_USE_COUNT(current->exec_domain->module);
-	if (current->binfmt && current->binfmt->module)
-		__MOD_DEC_USE_COUNT(current->binfmt->module);
-	current->exec_domain = lookup_exec_domain(current->personality);
-	current->binfmt = &elf32_format;
-	if (current->exec_domain && current->exec_domain->module)
-		__MOD_INC_USE_COUNT(current->exec_domain->module);
-	if (current->binfmt && current->binfmt->module)
-		__MOD_INC_USE_COUNT(current->binfmt->module);
-
-#ifndef VM_STACK_FLAGS
-	current->executable = bprm->inode;
-	bprm->inode->i_count++;
-#endif
-#ifdef LOW_ELF_STACK
-	current->start_stack = bprm->p = elf_stack - 4;
-#endif
-	current->suid = current->euid = current->fsuid = bprm->e_uid;
-	current->sgid = current->egid = current->fsgid = bprm->e_gid;
-	current->flags &= ~PF_FORKNOEXEC;
-	bprm->p = (unsigned long)
-	  create_elf32_tables((char *)bprm->p,
-			      bprm->argc,
-			      bprm->envc,
-			      (interpreter_type == INTERPRETER_ELF ? &elf_ex : NULL),
-			      load_addr,
-			      interp_load_addr,
-			      (interpreter_type == INTERPRETER_AOUT ? 0 : 1));
-	if (interpreter_type == INTERPRETER_AOUT)
-	  current->mm->arg_start += strlen(passed_fileno) + 1;
-	current->mm->start_brk = current->mm->brk = elf_brk;
-	current->mm->end_code = end_code;
-	current->mm->start_code = start_code;
-	current->mm->end_data = end_data;
-	current->mm->start_stack = bprm->p;
-
-	/* Calling set_brk effectively mmaps the pages that we need for the bss and break
-	   sections */
-	set_brk(elf_bss, elf_brk);
-
-	padzero(elf_bss);
-
-#if 0
-	printk("(start_brk) %x\n" , current->mm->start_brk);
-	printk("(end_code) %x\n" , current->mm->end_code);
-	printk("(start_code) %x\n" , current->mm->start_code);
-	printk("(end_data) %x\n" , current->mm->end_data);
-	printk("(start_stack) %x\n" , current->mm->start_stack);
-	printk("(brk) %x\n" , current->mm->brk);
-#endif
-
-	if ( current->personality == PER_SVR4 )
-	{
-		/* Why this, you ask???  Well SVr4 maps page 0 as read-only,
-		   and some applications "depend" upon this behavior.
-		   Since we do not have the power to recompile these, we
-		   emulate the SVr4 behavior.  Sigh.  */
-		error = do_mmap(NULL, 0, 4096, PROT_READ | PROT_EXEC,
-				MAP_FIXED | MAP_PRIVATE, 0);
-	}
-
-#ifdef ELF_PLAT_INIT
-	/*
-	 * The ABI may specify that certain registers be set up in special
-	 * ways (on i386 %edx is the address of a DT_FINI function, for
-	 * example.  This macro performs whatever initialization to
-	 * the regs structure is required.
-	 */
-	ELF_PLAT_INIT(regs);
-#endif
-
-
-	start_thread32(regs, elf_entry, bprm->p);
-	if (current->flags & PF_PTRACED)
-		send_sig(SIGTRAP, current, 0);
-	return 0;
-}
-
-static int
-load_elf32_binary(struct linux_binprm * bprm, struct pt_regs * regs)
-{
-	int retval;
-
-	MOD_INC_USE_COUNT;
-	retval = do_load_elf32_binary(bprm, regs);
-	MOD_DEC_USE_COUNT;
-	return retval;
-}
-
-/* This is really simpleminded and specialized - we are loading an
-   a.out library that is given an ELF header. */
-
-static inline int
-do_load_elf32_library(int fd){
-	struct file * file;
-	struct elfhdr elf_ex;
-	struct elf_phdr *elf_phdata  =  NULL;
-	struct  inode * inode;
-	unsigned long len;
-	int elf_bss;
-	int retval;
-	unsigned long bss;
-	int error;
-	int i,j, k;
-
-	len = 0;
-	file = current->files->fd[fd];
-	inode = file->f_inode;
-	elf_bss = 0;
-
-	if (!file || !file->f_op)
-		return -EACCES;
-
-	/* seek to the beginning of the file */
-	if (file->f_op->llseek) {
-		if ((error = file->f_op->llseek(inode, file, 0, 0)) != 0)
-			return -ENOEXEC;
-	} else
-		file->f_pos = 0;
-
-	set_fs(KERNEL_DS);
-	error = file->f_op->read(inode, file, (char *) &elf_ex, sizeof(elf_ex));
-	set_fs(USER_DS);
-	if (error != sizeof(elf_ex))
-		return -ENOEXEC;
-
-	if (elf_ex.e_ident[0] != 0x7f ||
-	    strncmp(&elf_ex.e_ident[1], "ELF",3) != 0)
-		return -ENOEXEC;
-
-	/* First of all, some simple consistency checks */
-	if (elf_ex.e_type != ET_EXEC || elf_ex.e_phnum > 2 ||
-	   !elf_check_arch(elf_ex.e_machine) ||
-	   (!inode->i_op || !inode->i_op->default_file_ops->mmap))
-		return -ENOEXEC;
-
-	/* Now read in all of the header information */
-
-	if (sizeof(struct elf_phdr) * elf_ex.e_phnum > PAGE_SIZE)
-		return -ENOEXEC;
-
-	elf_phdata =  (struct elf_phdr *)
-		kmalloc(sizeof(struct elf_phdr) * elf_ex.e_phnum, GFP_KERNEL);
-	if (elf_phdata == NULL)
-		return -ENOMEM;
-
-	retval = read_exec(inode, elf_ex.e_phoff, (char *) elf_phdata,
-			   sizeof(struct elf_phdr) * elf_ex.e_phnum, 1);
-
-	j = 0;
-	for(i=0; i<elf_ex.e_phnum; i++)
-		if ((elf_phdata + i)->p_type == PT_LOAD) j++;
-
-	if (j != 1)  {
-		kfree(elf_phdata);
-		return -ENOEXEC;
-	}
-
-	while(elf_phdata->p_type != PT_LOAD) elf_phdata++;
-
-	/* Now use mmap to map the library into memory. */
-	error = do_mmap(file,
-			ELF_PAGESTART(elf_phdata->p_vaddr),
-			(elf_phdata->p_filesz +
-			 ELF_PAGEOFFSET(elf_phdata->p_vaddr)),
-			PROT_READ | PROT_WRITE | PROT_EXEC,
-			MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE,
-			(elf_phdata->p_offset -
-			 ELF_PAGEOFFSET(elf_phdata->p_vaddr)));
-
-	k = elf_phdata->p_vaddr + elf_phdata->p_filesz;
-	if (k > elf_bss) elf_bss = k;
-
-	if (error != ELF_PAGESTART(elf_phdata->p_vaddr)) {
-		kfree(elf_phdata);
-		return error;
-	}
-
-	padzero(elf_bss);
-
-	len = ELF_PAGESTART(elf_phdata->p_filesz + elf_phdata->p_vaddr+ ELF_EXEC_PAGESIZE - 1);
-	bss = elf_phdata->p_memsz + elf_phdata->p_vaddr;
-	if (bss > len)
-	  do_mmap(NULL, len, bss-len,
-		  PROT_READ|PROT_WRITE|PROT_EXEC,
-		  MAP_FIXED|MAP_PRIVATE, 0);
-	kfree(elf_phdata);
-	return 0;
-}
-
-static int load_elf32_library(int fd)
-{
-	int retval;
-
-	MOD_INC_USE_COUNT;
-	retval = do_load_elf32_library(fd);
-	MOD_DEC_USE_COUNT;
-	return retval;
-}
-
-/*
- * Note that some platforms still use traditional core dumps and not
- * the ELF core dump.  Each platform can select it as appropriate.
- */
-#ifdef USE_ELF_CORE_DUMP
-
-/*
- * ELF core dumper
- *
- * Modelled on fs/exec.c:aout_core_dump()
- * Jeremy Fitzhardinge <jeremy@sw.oz.au>
- */
-/*
- * These are the only things you should do on a core-file: use only these
- * functions 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->f_inode, file, addr, nr) == nr;
-}
-
-static int dump_seek(struct file *file, off_t off)
-{
-	if (file->f_op->llseek) {
-		if (file->f_op->llseek(file->f_inode, file, off, 0) != off)
-			return 0;
-	} else
-		file->f_pos = off;
-	return 1;
-}
-
-/*
- * Decide whether a segment is worth dumping; default is yes to be
- * sure (missing info is worse than too much; etc).
- * Personally I'd include everything, and use the coredump limit...
- *
- * I think we should skip something. But I am not sure how. H.J.
- */
-static inline int maydump(struct vm_area_struct *vma)
-{
-	if (!(vma->vm_flags & (VM_READ|VM_WRITE|VM_EXEC)))
-		return 0;
-#if 1
-	if (vma->vm_flags & (VM_WRITE|VM_GROWSUP|VM_GROWSDOWN))
-		return 1;
-	if (vma->vm_flags & (VM_READ|VM_EXEC|VM_EXECUTABLE|VM_SHARED))
-		return 0;
-#endif
-	return 1;
-}
-
-#define roundup(x, y)  ((((x)+((y)-1))/(y))*(y))
-
-/* An ELF note in memory */
-struct memelfnote
-{
-	const char *name;
-	int type;
-	unsigned int datasz;
-	void *data;
-};
-
-static int notesize(struct memelfnote *en)
-{
-	int sz;
-
-	sz = sizeof(struct elf_note);
-	sz += roundup(strlen(en->name), 4);
-	sz += roundup(en->datasz, 4);
-
-	return sz;
-}
-
-/* #define DEBUG */
-
-#define DUMP_WRITE(addr, nr)	\
-	do { if (!dump_write(file, (addr), (nr))) return 0; } while(0)
-#define DUMP_SEEK(off)	\
-	do { if (!dump_seek(file, (off))) return 0; } while(0)
-
-static int writenote(struct memelfnote *men, struct file *file)
-{
-	struct elf_note en;
-
-	en.n_namesz = strlen(men->name);
-	en.n_descsz = men->datasz;
-	en.n_type = men->type;
-
-	DUMP_WRITE(&en, sizeof(en));
-	DUMP_WRITE(men->name, en.n_namesz);
-	/* XXX - cast from long long to long to avoid need for libgcc.a */
-	DUMP_SEEK(roundup((unsigned long)file->f_pos, 4));	/* XXX */
-	DUMP_WRITE(men->data, men->datasz);
-	DUMP_SEEK(roundup((unsigned long)file->f_pos, 4));	/* XXX */
-
-	return 1;
-}
-#undef DUMP_WRITE
-#undef DUMP_SEEK
-
-#define DUMP_WRITE(addr, nr)	\
-	if (!dump_write(&file, (addr), (nr))) \
-		goto close_coredump;
-#define DUMP_SEEK(off)	\
-	if (!dump_seek(&file, (off))) \
-		goto close_coredump;
-/*
- * Actual dumper
- *
- * This is a two-pass process; first we find the offsets of the bits,
- * and then they are actually written out.  If we run out of core limit
- * we just truncate.
- */
-static int elf32_core_dump(long signr, struct pt_regs * regs)
-{
-	int has_dumped = 0;
-	struct file file;
-	struct inode *inode;
-	unsigned short fs;
-	char corefile[6+sizeof(current->comm)];
-	int segs;
-	int i;
-	size_t size;
-	struct vm_area_struct *vma;
-	struct elfhdr elf;
-	off_t offset = 0, dataoff;
-	int limit = current->rlim[RLIMIT_CORE].rlim_cur;
-	int numnote = 4;
-	struct memelfnote notes[4];
-	struct elf_prstatus prstatus;	/* NT_PRSTATUS */
-	elf_fpregset_t fpu;		/* NT_PRFPREG */
-	struct elf_prpsinfo psinfo;	/* NT_PRPSINFO */
-
-	if (!current->dumpable || limit < PAGE_SIZE || current->mm->count != 1)
-		return 0;
-	current->dumpable = 0;
-
-#ifndef CONFIG_BINFMT_ELF32
-	MOD_INC_USE_COUNT;
-#endif
-
-	/* Count what's needed to dump, up to the limit of coredump size */
-	segs = 0;
-	size = 0;
-	for(vma = current->mm->mmap; vma != NULL; vma = vma->vm_next) {
-		if (maydump(vma))
-		{
-			int sz = vma->vm_end-vma->vm_start;
-
-			if (size+sz >= limit)
-				break;
-			else
-				size += sz;
-		}
-
-		segs++;
-	}
-#ifdef DEBUG
-	printk("elf_core_dump: %d segs taking %d bytes\n", segs, size);
-#endif
-
-	/* Set up header */
-	memcpy(elf.e_ident, ELFMAG, SELFMAG);
-	elf.e_ident[EI_CLASS] = ELF_CLASS;
-	elf.e_ident[EI_DATA] = ELF_DATA;
-	elf.e_ident[EI_VERSION] = EV_CURRENT;
-	memset(elf.e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
-
-	elf.e_type = ET_CORE;
-	elf.e_machine = ELF_ARCH;
-	elf.e_version = EV_CURRENT;
-	elf.e_entry = 0;
-	elf.e_phoff = sizeof(elf);
-	elf.e_shoff = 0;
-	elf.e_flags = 0;
-	elf.e_ehsize = sizeof(elf);
-	elf.e_phentsize = sizeof(struct elf_phdr);
-	elf.e_phnum = segs+1;		/* Include notes */
-	elf.e_shentsize = 0;
-	elf.e_shnum = 0;
-	elf.e_shstrndx = 0;
-
-	fs = get_fs();
-	set_fs(KERNEL_DS);
-	memcpy(corefile,"core.",5);
-#if 0
-	memcpy(corefile+5,current->comm,sizeof(current->comm));
-#else
-	corefile[4] = '\0';
-#endif
-	if (open_namei(corefile,O_CREAT | 2 | O_TRUNC,0600,&inode,NULL)) {
-		inode = NULL;
-		goto end_coredump;
-	}
-	if (!S_ISREG(inode->i_mode))
-		goto end_coredump;
-	if (!inode->i_op || !inode->i_op->default_file_ops)
-		goto end_coredump;
-	file.f_mode = 3;
-	file.f_flags = 0;
-	file.f_count = 1;
-	file.f_inode = inode;
-	file.f_pos = 0;
-	file.f_reada = 0;
-	file.f_op = inode->i_op->default_file_ops;
-	if (file.f_op->open)
-		if (file.f_op->open(inode,&file))
-			goto end_coredump;
-	if (!file.f_op->write)
-		goto close_coredump;
-	has_dumped = 1;
-	current->flags |= PF_DUMPCORE;
-
-	DUMP_WRITE(&elf, sizeof(elf));
-	offset += sizeof(elf);				/* Elf header */
-	offset += (segs+1) * sizeof(struct elf_phdr);	/* Program headers */
-
-	/*
-	 * Set up the notes in similar form to SVR4 core dumps made
-	 * with info from their /proc.
-	 */
-	memset(&psinfo, 0, sizeof(psinfo));
-	memset(&prstatus, 0, sizeof(prstatus));
-
-	notes[0].name = "CORE";
-	notes[0].type = NT_PRSTATUS;
-	notes[0].datasz = sizeof(prstatus);
-	notes[0].data = &prstatus;
-	prstatus.pr_info.si_signo = prstatus.pr_cursig = signr;
-	prstatus.pr_sigpend = current->signal;
-	prstatus.pr_sighold = current->blocked;
-	psinfo.pr_pid = prstatus.pr_pid = current->pid;
-	psinfo.pr_ppid = prstatus.pr_ppid = current->p_pptr->pid;
-	psinfo.pr_pgrp = prstatus.pr_pgrp = current->pgrp;
-	psinfo.pr_sid = prstatus.pr_sid = current->session;
-	prstatus.pr_utime.tv_sec = CT_TO_SECS(current->utime);
-	prstatus.pr_utime.tv_usec = CT_TO_USECS(current->utime);
-	prstatus.pr_stime.tv_sec = CT_TO_SECS(current->stime);
-	prstatus.pr_stime.tv_usec = CT_TO_USECS(current->stime);
-	prstatus.pr_cutime.tv_sec = CT_TO_SECS(current->cutime);
-	prstatus.pr_cutime.tv_usec = CT_TO_USECS(current->cutime);
-	prstatus.pr_cstime.tv_sec = CT_TO_SECS(current->cstime);
-	prstatus.pr_cstime.tv_usec = CT_TO_USECS(current->cstime);
-
-	/*
-	 * This transfers the registers from regs into the standard
-	 * coredump arrangement, whatever that is.
-	 */
-#ifdef ELF_CORE_COPY_REGS
-	ELF_CORE_COPY_REGS(prstatus.pr_reg, regs)
-#else
-	if (sizeof(elf_gregset_t) != sizeof(struct pt_regs))
-	{
-		printk("sizeof(elf_gregset_t) (%ld) != sizeof(struct pt_regs) (%ld)\n",
-			sizeof(elf_gregset_t), sizeof(struct pt_regs));
-	}
-	else
-		*(struct pt_regs *)&prstatus.pr_reg = *regs;
-#endif
-
-	notes[1].name = "CORE";
-	notes[1].type = NT_PRPSINFO;
-	notes[1].datasz = sizeof(psinfo);
-	notes[1].data = &psinfo;
-	psinfo.pr_state = current->state;
-	psinfo.pr_sname = (current->state < 0 || current->state > 5) ? '.' : "RSDZTD"[current->state];
-	psinfo.pr_zomb = psinfo.pr_sname == 'Z';
-	psinfo.pr_nice = current->priority-15;
-	psinfo.pr_flag = current->flags;
-	psinfo.pr_uid = current->uid;
-	psinfo.pr_gid = current->gid;
-	{
-		int i, len;
-
-		set_fs(fs);
-
-		len = current->mm->arg_end - current->mm->arg_start;
-		len = len >= ELF_PRARGSZ ? ELF_PRARGSZ : len;
-		copy_from_user(&psinfo.pr_psargs,
-			      (const char *)current->mm->arg_start, len);
-		for(i = 0; i < len; i++)
-			if (psinfo.pr_psargs[i] == 0)
-				psinfo.pr_psargs[i] = ' ';
-		psinfo.pr_psargs[len] = 0;
-
-		set_fs(KERNEL_DS);
-	}
-	strncpy(psinfo.pr_fname, current->comm, sizeof(psinfo.pr_fname));
-
-	notes[2].name = "CORE";
-	notes[2].type = NT_TASKSTRUCT;
-	notes[2].datasz = sizeof(*current);
-	notes[2].data = current;
-
-	/* Try to dump the fpu. */
-	prstatus.pr_fpvalid = dump_fpu (regs, &fpu);
-	if (!prstatus.pr_fpvalid)
-	{
-		numnote--;
-	}
-	else
-	{
-		notes[3].name = "CORE";
-		notes[3].type = NT_PRFPREG;
-		notes[3].datasz = sizeof(fpu);
-		notes[3].data = &fpu;
-	}
-	
-	/* Write notes phdr entry */
-	{
-		struct elf_phdr phdr;
-		int sz = 0;
-
-		for(i = 0; i < numnote; i++)
-			sz += notesize(&notes[i]);
-
-		phdr.p_type = PT_NOTE;
-		phdr.p_offset = offset;
-		phdr.p_vaddr = 0;
-		phdr.p_paddr = 0;
-		phdr.p_filesz = sz;
-		phdr.p_memsz = 0;
-		phdr.p_flags = 0;
-		phdr.p_align = 0;
-
-		offset += phdr.p_filesz;
-		DUMP_WRITE(&phdr, sizeof(phdr));
-	}
-
-	/* Page-align dumped data */
-	dataoff = offset = roundup(offset, PAGE_SIZE);
-
-	/* Write program headers for segments dump */
-	for(vma = current->mm->mmap, i = 0;
-		i < segs && vma != NULL; vma = vma->vm_next) {
-		struct elf_phdr phdr;
-		size_t sz;
-
-		i++;
-
-		sz = vma->vm_end - vma->vm_start;
-
-		phdr.p_type = PT_LOAD;
-		phdr.p_offset = offset;
-		phdr.p_vaddr = vma->vm_start;
-		phdr.p_paddr = 0;
-		phdr.p_filesz = maydump(vma) ? sz : 0;
-		phdr.p_memsz = sz;
-		offset += phdr.p_filesz;
-		phdr.p_flags = vma->vm_flags & VM_READ ? PF_R : 0;
-		if (vma->vm_flags & VM_WRITE) phdr.p_flags |= PF_W;
-		if (vma->vm_flags & VM_EXEC) phdr.p_flags |= PF_X;
-		phdr.p_align = PAGE_SIZE;
-
-		DUMP_WRITE(&phdr, sizeof(phdr));
-	}
-
-	for(i = 0; i < numnote; i++)
-		if (!writenote(&notes[i], &file))
-			goto close_coredump;
-
-	set_fs(fs);
-
-	DUMP_SEEK(dataoff);
-
-	for(i = 0, vma = current->mm->mmap;
-	    i < segs && vma != NULL;
-	    vma = vma->vm_next) {
-		unsigned long addr = vma->vm_start;
-		unsigned long len = vma->vm_end - vma->vm_start;
-
-		i++;
-		if (!maydump(vma))
-			continue;
-#ifdef DEBUG
-		printk("elf_core_dump: writing %08lx %lx\n", addr, len);
-#endif
-		DUMP_WRITE((void *)addr, len);
-	}
-
-	if ((off_t) file.f_pos != offset) {
-		/* Sanity check */
-		printk("elf_core_dump: file.f_pos (%ld) != offset (%ld)\n",
-		       (off_t) file.f_pos, offset);
-	}
-
- close_coredump:
-	if (file.f_op->release)
-		file.f_op->release(inode,&file);
-
- end_coredump:
-	set_fs(fs);
-	iput(inode);
-#ifndef CONFIG_BINFMT_ELF32
-	MOD_DEC_USE_COUNT;
-#endif
-	return has_dumped;
-}
-#endif		/* USE_ELF_CORE_DUMP */
-
-__initfunc(int init_elf32_binfmt(void))
-{
-	return register_binfmt(&elf32_format);
-}
-
-#ifdef MODULE
-
-int init_module(void)
-{
-	/* Install the COFF, ELF and XOUT loaders.
-	 * N.B. We *rely* on the table being the right size with the
-	 * right number of free slots...
-	 */
-	return init_elf32_binfmt();
-}
-
-
-void cleanup_module( void)
-{
-	/* Remove the COFF and ELF loaders. */
-	unregister_binfmt(&elf32_format);
-}
-#endif

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov