jenna
/
kernel_samsung_sm7125
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

fs/binfmt_som: Drop kernel support for HP-UX SOM binaries

Browse Source 
The parisc arch has been the only user of HP-UX SOM binaries.

Support for HP-UX executables was never finished and since we now drop support
for the HP-UX compat layer anyway, it does not makes sense to keep the
BINFMT_SOM support.

Cc: linux-fsdevel@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
tirimbino
Helge Deller 10 years ago
parent 3d66b810eb
commit 35e88d5c22
5 changed files with 0 additions and 462 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 7
      fs/Kconfig.binfmt
  2. 1
      fs/Makefile
  3. 299
      fs/binfmt_som.c
  4. 1
      include/uapi/linux/Kbuild
  5. 154
      include/uapi/linux/som.h

7
fs/Kconfig.binfmt
Unescape View File

@ -149,13 +149,6 @@ config BINFMT_EM86
later load the module when you want to use a Linux/Intel binary. The
module will be called binfmt_em86. If unsure, say Y.
config BINFMT_SOM
tristate "Kernel support for SOM binaries"
depends on PARISC && HPUX
help
SOM is a binary executable format inherited from HP/UX. Say
Y here to be able to load and execute SOM binaries directly.
config BINFMT_MISC
tristate "Kernel support for MISC binaries"
---help---

1
fs/Makefile
Unescape View File

@ -37,7 +37,6 @@ obj-$(CONFIG_BINFMT_SCRIPT) += binfmt_script.o
obj-$(CONFIG_BINFMT_ELF) += binfmt_elf.o
obj-$(CONFIG_COMPAT_BINFMT_ELF) += compat_binfmt_elf.o
obj-$(CONFIG_BINFMT_ELF_FDPIC) += binfmt_elf_fdpic.o
obj-$(CONFIG_BINFMT_SOM) += binfmt_som.o
obj-$(CONFIG_BINFMT_FLAT) += binfmt_flat.o
obj-$(CONFIG_FS_MBCACHE) += mbcache.o

299
fs/binfmt_som.c
Unescape View File

@ -1,299 +0,0 @@
/*
* linux/fs/binfmt_som.c
*
* These are the functions used to load SOM format executables as used
* by HP-UX.
*
* Copyright 1999 Matthew Wilcox <willy@bofh.ai>
* based on binfmt_elf which is
* 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/errno.h>
#include <linux/signal.h>
#include <linux/binfmts.h>
#include <linux/som.h>
#include <linux/string.h>
#include <linux/file.h>
#include <linux/fcntl.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/shm.h>
#include <linux/personality.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <linux/elf.h>
static int load_som_binary(struct linux_binprm * bprm);
static int load_som_library(struct file *);
/*
* If we don't support core dumping, then supply a NULL so we
* don't even try.
*/
#if 0
static int som_core_dump(struct coredump_params *cprm);
#else
#define som_core_dump NULL
#endif
#define SOM_PAGESTART(_v) ((_v) & ~(unsigned long)(SOM_PAGESIZE-1))
#define SOM_PAGEOFFSET(_v) ((_v) & (SOM_PAGESIZE-1))
#define SOM_PAGEALIGN(_v) (((_v) + SOM_PAGESIZE - 1) & ~(SOM_PAGESIZE - 1))
static struct linux_binfmt som_format = {
.module = THIS_MODULE,
.load_binary = load_som_binary,
.load_shlib = load_som_library,
.core_dump = som_core_dump,
.min_coredump = SOM_PAGESIZE
};
/*
* create_som_tables() parses the env- and arg-strings in new user
* memory and creates the pointer tables from them, and puts their
* addresses on the "stack", returning the new stack pointer value.
*/
static void create_som_tables(struct linux_binprm *bprm)
{
char **argv, **envp;
int argc = bprm->argc;
int envc = bprm->envc;
unsigned long p;
unsigned long *sp;
/* Word-align the stack pointer */
sp = (unsigned long *)((bprm->p + 3) & ~3);
envp = (char **) sp;
sp += envc + 1;
argv = (char **) sp;
sp += argc + 1;
__put_user((unsigned long) envp,++sp);
__put_user((unsigned long) argv,++sp);
__put_user(argc, ++sp);
bprm->p = (unsigned long) sp;
p = current->mm->arg_start;
while (argc-- > 0) {
__put_user((char *)p,argv++);
p += strlen_user((char *)p);
}
__put_user(NULL, argv);
current->mm->arg_end = current->mm->env_start = p;
while (envc-- > 0) {
__put_user((char *)p,envp++);
p += strlen_user((char *)p);
}
__put_user(NULL, envp);
current->mm->env_end = p;
}
static int check_som_header(struct som_hdr *som_ex)
{
int *buf = (int *)som_ex;
int i, ck;
if (som_ex->system_id != SOM_SID_PARISC_1_0 &&
som_ex->system_id != SOM_SID_PARISC_1_1 &&
som_ex->system_id != SOM_SID_PARISC_2_0)
return -ENOEXEC;
if (som_ex->a_magic != SOM_EXEC_NONSHARE &&
som_ex->a_magic != SOM_EXEC_SHARE &&
som_ex->a_magic != SOM_EXEC_DEMAND)
return -ENOEXEC;
if (som_ex->version_id != SOM_ID_OLD &&
som_ex->version_id != SOM_ID_NEW)
return -ENOEXEC;
ck = 0;
for (i=0; i<32; i++)
ck ^= buf[i];
if (ck != 0)
return -ENOEXEC;
return 0;
}
static int map_som_binary(struct file *file,
const struct som_exec_auxhdr *hpuxhdr)
{
unsigned long code_start, code_size, data_start, data_size;
unsigned long bss_start, som_brk;
int retval;
int prot = PROT_READ | PROT_EXEC;
int flags = MAP_FIXED|MAP_PRIVATE|MAP_DENYWRITE|MAP_EXECUTABLE;
mm_segment_t old_fs = get_fs();
set_fs(get_ds());
code_start = SOM_PAGESTART(hpuxhdr->exec_tmem);
code_size = SOM_PAGEALIGN(hpuxhdr->exec_tsize);
current->mm->start_code = code_start;
current->mm->end_code = code_start + code_size;
retval = vm_mmap(file, code_start, code_size, prot,
flags, SOM_PAGESTART(hpuxhdr->exec_tfile));
if (retval < 0 && retval > -1024)
goto out;
data_start = SOM_PAGESTART(hpuxhdr->exec_dmem);
data_size = SOM_PAGEALIGN(hpuxhdr->exec_dsize);
current->mm->start_data = data_start;
current->mm->end_data = bss_start = data_start + data_size;
retval = vm_mmap(file, data_start, data_size,
prot | PROT_WRITE, flags,
SOM_PAGESTART(hpuxhdr->exec_dfile));
if (retval < 0 && retval > -1024)
goto out;
som_brk = bss_start + SOM_PAGEALIGN(hpuxhdr->exec_bsize);
current->mm->start_brk = current->mm->brk = som_brk;
retval = vm_mmap(NULL, bss_start, som_brk - bss_start,
prot | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, 0);
if (retval > 0 || retval < -1024)
retval = 0;
out:
set_fs(old_fs);
return retval;
}
/*
* These are the functions used to load SOM executables and shared
* libraries. There is no binary dependent code anywhere else.
*/
static int
load_som_binary(struct linux_binprm * bprm)
{
int retval;
unsigned int size;
unsigned long som_entry;
struct som_hdr *som_ex;
struct som_exec_auxhdr *hpuxhdr;
struct pt_regs *regs = current_pt_regs();
/* Get the exec-header */
som_ex = (struct som_hdr *) bprm->buf;
retval = check_som_header(som_ex);
if (retval != 0)
goto out;
/* Now read in the auxiliary header information */
retval = -ENOMEM;
size = som_ex->aux_header_size;
if (size > SOM_PAGESIZE)
goto out;
hpuxhdr = kmalloc(size, GFP_KERNEL);
if (!hpuxhdr)
goto out;
retval = kernel_read(bprm->file, som_ex->aux_header_location,
(char *) hpuxhdr, size);
if (retval != size) {
if (retval >= 0)
retval = -EIO;
goto out_free;
}
/* Flush all traces of the currently running executable */
retval = flush_old_exec(bprm);
if (retval)
goto out_free;
/* OK, This is the point of no return */
current->personality = PER_HPUX;
setup_new_exec(bprm);
/* Set the task size for HP-UX processes such that
* the gateway page is outside the address space.
* This can be fixed later, but for now, this is much
* easier.
*/
current->thread.task_size = 0xc0000000;
/* Set map base to allow enough room for hp-ux heap growth */
current->thread.map_base = 0x80000000;
retval = map_som_binary(bprm->file, hpuxhdr);
if (retval < 0)
goto out_free;
som_entry = hpuxhdr->exec_entry;
kfree(hpuxhdr);
set_binfmt(&som_format);
install_exec_creds(bprm);
setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
create_som_tables(bprm);
current->mm->start_stack = bprm->p;
#if 0
printk("(start_brk) %08lx\n" , (unsigned long) current->mm->start_brk);
printk("(end_code) %08lx\n" , (unsigned long) current->mm->end_code);
printk("(start_code) %08lx\n" , (unsigned long) current->mm->start_code);
printk("(end_data) %08lx\n" , (unsigned long) current->mm->end_data);
printk("(start_stack) %08lx\n" , (unsigned long) current->mm->start_stack);
printk("(brk) %08lx\n" , (unsigned long) current->mm->brk);
#endif
map_hpux_gateway_page(current,current->mm);
start_thread_som(regs, som_entry, bprm->p);
return 0;
/* error cleanup */
out_free:
kfree(hpuxhdr);
out:
return retval;
}
static int load_som_library(struct file *f)
{
/* No lib support in SOM yet. gizza chance.. */
return -ENOEXEC;
}
/* Install the SOM loader.
* N.B. We *rely* on the table being the right size with the
* right number of free slots...
*/
static int __init init_som_binfmt(void)
{
register_binfmt(&som_format);
return 0;
}
static void __exit exit_som_binfmt(void)
{
/* Remove the SOM loader. */
unregister_binfmt(&som_format);
}
core_initcall(init_som_binfmt);
module_exit(exit_som_binfmt);
MODULE_LICENSE("GPL");

1
include/uapi/linux/Kbuild
Unescape View File

@ -370,7 +370,6 @@ header-y += snmp.h
header-y += sock_diag.h
header-y += socket.h
header-y += sockios.h
header-y += som.h
header-y += sonet.h
header-y += sonypi.h
header-y += soundcard.h

154
include/uapi/linux/som.h
Unescape View File

@ -1,154 +0,0 @@
#ifndef _LINUX_SOM_H
#define _LINUX_SOM_H
/* File format definition for SOM executables / shared libraries */
/* we need struct timespec */
#include <linux/time.h>
#define SOM_PAGESIZE 4096
/* this is the SOM header */
struct som_hdr {
short system_id; /* magic number - system */
short a_magic; /* magic number - file type */
unsigned int version_id; /* versiod ID: YYMMDDHH */
struct timespec file_time; /* system clock */
unsigned int entry_space; /* space for entry point */
unsigned int entry_subspace; /* subspace for entry point */
unsigned int entry_offset; /* offset of entry point */
unsigned int aux_header_location; /* auxiliary header location */
unsigned int aux_header_size; /* auxiliary header size */
unsigned int som_length; /* length of entire SOM */
unsigned int presumed_dp; /* compiler's DP value */
unsigned int space_location; /* space dictionary location */
unsigned int space_total; /* number of space entries */
unsigned int subspace_location; /* subspace entries location */
unsigned int subspace_total; /* number of subspace entries */
unsigned int loader_fixup_location; /* MPE/iX loader fixup */
unsigned int loader_fixup_total; /* number of fixup records */
unsigned int space_strings_location; /* (sub)space names */
unsigned int space_strings_size; /* size of strings area */
unsigned int init_array_location; /* reserved */
unsigned int init_array_total; /* reserved */
unsigned int compiler_location; /* module dictionary */
unsigned int compiler_total; /* number of modules */
unsigned int symbol_location; /* symbol dictionary */
unsigned int symbol_total; /* number of symbols */
unsigned int fixup_request_location; /* fixup requests */
unsigned int fixup_request_total; /* number of fixup requests */
unsigned int symbol_strings_location;/* module & symbol names area */
unsigned int symbol_strings_size; /* size of strings area */
unsigned int unloadable_sp_location; /* unloadable spaces location */
unsigned int unloadable_sp_size; /* size of data */
unsigned int checksum;
};
/* values for system_id */
#define SOM_SID_PARISC_1_0 0x020b
#define SOM_SID_PARISC_1_1 0x0210
#define SOM_SID_PARISC_2_0 0x0214
/* values for a_magic */
#define SOM_LIB_EXEC 0x0104
#define SOM_RELOCATABLE 0x0106
#define SOM_EXEC_NONSHARE 0x0107
#define SOM_EXEC_SHARE 0x0108
#define SOM_EXEC_DEMAND 0x010B
#define SOM_LIB_DYN 0x010D
#define SOM_LIB_SHARE 0x010E
#define SOM_LIB_RELOC 0x0619
/* values for version_id. Decimal not hex, yes. Grr. */
#define SOM_ID_OLD 85082112
#define SOM_ID_NEW 87102412
struct aux_id {
unsigned int mandatory :1; /* the linker must understand this */
unsigned int copy :1; /* Must be copied by the linker */
unsigned int append :1; /* Must be merged by the linker */
unsigned int ignore :1; /* Discard section if unknown */
unsigned int reserved :12;
unsigned int type :16; /* Header type */
unsigned int length; /* length of _following_ data */
};
/* The Exec Auxiliary Header. Called The HP-UX Header within HP apparently. */
struct som_exec_auxhdr {
struct aux_id som_auxhdr;
int exec_tsize; /* Text size in bytes */
int exec_tmem; /* Address to load text at */
int exec_tfile; /* Location of text in file */
int exec_dsize; /* Data size in bytes */
int exec_dmem; /* Address to load data at */
int exec_dfile; /* Location of data in file */
int exec_bsize; /* Uninitialised data (bss) */
int exec_entry; /* Address to start executing */
int exec_flags; /* loader flags */
int exec_bfill; /* initialisation value for bss */
};
/* Oh, the things people do to avoid casts. Shame it'll break with gcc's
* new aliasing rules really.
*/
union name_pt {
char * n_name;
unsigned int n_strx;
};
/* The Space Dictionary */
struct space_dictionary_record {
union name_pt name; /* index to subspace name */
unsigned int is_loadable :1; /* loadable */
unsigned int is_defined :1; /* defined within file */
unsigned int is_private :1; /* not sharable */
unsigned int has_intermediate_code :1; /* contains intermediate code */
unsigned int is_tspecific :1; /* thread specific */
unsigned int reserved :11; /* for future expansion */
unsigned int sort_key :8; /* for linker */
unsigned int reserved2 :8; /* for future expansion */
int space_number; /* index */
int subspace_index; /* index into subspace dict */
unsigned int subspace_quantity; /* number of subspaces */
int loader_fix_index; /* for loader */
unsigned int loader_fix_quantity; /* for loader */
int init_pointer_index; /* data pointer array index */
unsigned int init_pointer_quantity; /* number of data pointers */
};
/* The Subspace Dictionary */
struct subspace_dictionary_record {
int space_index;
unsigned int access_control_bits :7;
unsigned int memory_resident :1;
unsigned int dup_common :1;
unsigned int is_common :1;
unsigned int quadrant :2;
unsigned int initially_frozen :1;
unsigned int is_first :1;
unsigned int code_only :1;
unsigned int sort_key :8;
unsigned int replicate_init :1;
unsigned int continuation :1;
unsigned int is_tspecific :1;
unsigned int is_comdat :1;
unsigned int reserved :4;
int file_loc_init_value;
unsigned int initialization_length;
unsigned int subspace_start;
unsigned int subspace_length;
unsigned int reserved2 :5;
unsigned int alignment :27;
union name_pt name;
int fixup_request_index;
unsigned int fixup_request_quantity;
};
#endif /* _LINUX_SOM_H */
Write Preview
Loading…
Cancel
Save