fs/binfmt_som: Drop kernel support for HP-UX SOM binaries
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>
This commit is contained in:
Helge Deller
parent
3d66b810eb
commit
35e88d5c22
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@ -149,13 +149,6 @@ config BINFMT_EM86
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later load the module when you want to use a Linux/Intel binary. The
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module will be called binfmt_em86. If unsure, say Y.
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config BINFMT_SOM
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tristate "Kernel support for SOM binaries"
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depends on PARISC && HPUX
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help
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SOM is a binary executable format inherited from HP/UX. Say
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Y here to be able to load and execute SOM binaries directly.
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config BINFMT_MISC
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tristate "Kernel support for MISC binaries"
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---help---
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@ -37,7 +37,6 @@ obj-$(CONFIG_BINFMT_SCRIPT) += binfmt_script.o
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obj-$(CONFIG_BINFMT_ELF) += binfmt_elf.o
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obj-$(CONFIG_COMPAT_BINFMT_ELF) += compat_binfmt_elf.o
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obj-$(CONFIG_BINFMT_ELF_FDPIC) += binfmt_elf_fdpic.o
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obj-$(CONFIG_BINFMT_SOM) += binfmt_som.o
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obj-$(CONFIG_BINFMT_FLAT) += binfmt_flat.o
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obj-$(CONFIG_FS_MBCACHE) += mbcache.o
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299
fs/binfmt_som.c
299
fs/binfmt_som.c
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@ -1,299 +0,0 @@
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/*
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* linux/fs/binfmt_som.c
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*
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* These are the functions used to load SOM format executables as used
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* by HP-UX.
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*
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* Copyright 1999 Matthew Wilcox <willy@bofh.ai>
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* based on binfmt_elf which is
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* Copyright 1993, 1994: Eric Youngdale (ericy@cais.com).
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*/
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#include <linux/module.h>
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#include <linux/fs.h>
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#include <linux/stat.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/mman.h>
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#include <linux/errno.h>
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#include <linux/signal.h>
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#include <linux/binfmts.h>
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#include <linux/som.h>
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#include <linux/string.h>
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#include <linux/file.h>
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#include <linux/fcntl.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/shm.h>
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#include <linux/personality.h>
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#include <linux/init.h>
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#include <asm/uaccess.h>
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#include <asm/pgtable.h>
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#include <linux/elf.h>
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static int load_som_binary(struct linux_binprm * bprm);
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static int load_som_library(struct file *);
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/*
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* If we don't support core dumping, then supply a NULL so we
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* don't even try.
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*/
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#if 0
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static int som_core_dump(struct coredump_params *cprm);
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#else
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#define som_core_dump NULL
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#endif
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#define SOM_PAGESTART(_v) ((_v) & ~(unsigned long)(SOM_PAGESIZE-1))
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#define SOM_PAGEOFFSET(_v) ((_v) & (SOM_PAGESIZE-1))
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#define SOM_PAGEALIGN(_v) (((_v) + SOM_PAGESIZE - 1) & ~(SOM_PAGESIZE - 1))
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static struct linux_binfmt som_format = {
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.module = THIS_MODULE,
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.load_binary = load_som_binary,
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.load_shlib = load_som_library,
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.core_dump = som_core_dump,
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.min_coredump = SOM_PAGESIZE
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};
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/*
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* create_som_tables() parses the env- and arg-strings in new user
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* memory and creates the pointer tables from them, and puts their
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* addresses on the "stack", returning the new stack pointer value.
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*/
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static void create_som_tables(struct linux_binprm *bprm)
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{
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char **argv, **envp;
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int argc = bprm->argc;
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int envc = bprm->envc;
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unsigned long p;
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unsigned long *sp;
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/* Word-align the stack pointer */
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sp = (unsigned long *)((bprm->p + 3) & ~3);
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envp = (char **) sp;
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sp += envc + 1;
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argv = (char **) sp;
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sp += argc + 1;
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__put_user((unsigned long) envp,++sp);
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__put_user((unsigned long) argv,++sp);
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__put_user(argc, ++sp);
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bprm->p = (unsigned long) sp;
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p = current->mm->arg_start;
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while (argc-- > 0) {
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__put_user((char *)p,argv++);
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p += strlen_user((char *)p);
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}
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__put_user(NULL, argv);
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current->mm->arg_end = current->mm->env_start = p;
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while (envc-- > 0) {
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__put_user((char *)p,envp++);
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p += strlen_user((char *)p);
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}
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__put_user(NULL, envp);
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current->mm->env_end = p;
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}
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static int check_som_header(struct som_hdr *som_ex)
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{
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int *buf = (int *)som_ex;
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int i, ck;
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if (som_ex->system_id != SOM_SID_PARISC_1_0 &&
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som_ex->system_id != SOM_SID_PARISC_1_1 &&
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som_ex->system_id != SOM_SID_PARISC_2_0)
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return -ENOEXEC;
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if (som_ex->a_magic != SOM_EXEC_NONSHARE &&
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som_ex->a_magic != SOM_EXEC_SHARE &&
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som_ex->a_magic != SOM_EXEC_DEMAND)
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return -ENOEXEC;
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if (som_ex->version_id != SOM_ID_OLD &&
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som_ex->version_id != SOM_ID_NEW)
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return -ENOEXEC;
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ck = 0;
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for (i=0; i<32; i++)
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ck ^= buf[i];
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if (ck != 0)
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return -ENOEXEC;
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return 0;
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}
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static int map_som_binary(struct file *file,
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const struct som_exec_auxhdr *hpuxhdr)
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{
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unsigned long code_start, code_size, data_start, data_size;
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unsigned long bss_start, som_brk;
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int retval;
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int prot = PROT_READ | PROT_EXEC;
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int flags = MAP_FIXED|MAP_PRIVATE|MAP_DENYWRITE|MAP_EXECUTABLE;
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mm_segment_t old_fs = get_fs();
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set_fs(get_ds());
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code_start = SOM_PAGESTART(hpuxhdr->exec_tmem);
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code_size = SOM_PAGEALIGN(hpuxhdr->exec_tsize);
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current->mm->start_code = code_start;
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current->mm->end_code = code_start + code_size;
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retval = vm_mmap(file, code_start, code_size, prot,
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flags, SOM_PAGESTART(hpuxhdr->exec_tfile));
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if (retval < 0 && retval > -1024)
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goto out;
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data_start = SOM_PAGESTART(hpuxhdr->exec_dmem);
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data_size = SOM_PAGEALIGN(hpuxhdr->exec_dsize);
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current->mm->start_data = data_start;
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current->mm->end_data = bss_start = data_start + data_size;
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retval = vm_mmap(file, data_start, data_size,
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prot | PROT_WRITE, flags,
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SOM_PAGESTART(hpuxhdr->exec_dfile));
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if (retval < 0 && retval > -1024)
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goto out;
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som_brk = bss_start + SOM_PAGEALIGN(hpuxhdr->exec_bsize);
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current->mm->start_brk = current->mm->brk = som_brk;
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retval = vm_mmap(NULL, bss_start, som_brk - bss_start,
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prot | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, 0);
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if (retval > 0 || retval < -1024)
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retval = 0;
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out:
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set_fs(old_fs);
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return retval;
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}
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/*
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* These are the functions used to load SOM executables and shared
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* libraries. There is no binary dependent code anywhere else.
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*/
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static int
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load_som_binary(struct linux_binprm * bprm)
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{
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int retval;
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unsigned int size;
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unsigned long som_entry;
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struct som_hdr *som_ex;
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struct som_exec_auxhdr *hpuxhdr;
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struct pt_regs *regs = current_pt_regs();
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/* Get the exec-header */
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som_ex = (struct som_hdr *) bprm->buf;
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retval = check_som_header(som_ex);
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if (retval != 0)
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goto out;
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/* Now read in the auxiliary header information */
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retval = -ENOMEM;
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size = som_ex->aux_header_size;
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if (size > SOM_PAGESIZE)
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goto out;
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hpuxhdr = kmalloc(size, GFP_KERNEL);
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if (!hpuxhdr)
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goto out;
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retval = kernel_read(bprm->file, som_ex->aux_header_location,
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(char *) hpuxhdr, size);
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if (retval != size) {
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if (retval >= 0)
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retval = -EIO;
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goto out_free;
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}
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/* Flush all traces of the currently running executable */
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retval = flush_old_exec(bprm);
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if (retval)
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goto out_free;
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/* OK, This is the point of no return */
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current->personality = PER_HPUX;
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setup_new_exec(bprm);
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/* Set the task size for HP-UX processes such that
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* the gateway page is outside the address space.
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* This can be fixed later, but for now, this is much
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* easier.
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*/
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current->thread.task_size = 0xc0000000;
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/* Set map base to allow enough room for hp-ux heap growth */
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current->thread.map_base = 0x80000000;
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retval = map_som_binary(bprm->file, hpuxhdr);
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if (retval < 0)
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goto out_free;
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som_entry = hpuxhdr->exec_entry;
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kfree(hpuxhdr);
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set_binfmt(&som_format);
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install_exec_creds(bprm);
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setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
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create_som_tables(bprm);
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current->mm->start_stack = bprm->p;
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#if 0
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printk("(start_brk) %08lx\n" , (unsigned long) current->mm->start_brk);
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printk("(end_code) %08lx\n" , (unsigned long) current->mm->end_code);
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printk("(start_code) %08lx\n" , (unsigned long) current->mm->start_code);
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printk("(end_data) %08lx\n" , (unsigned long) current->mm->end_data);
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printk("(start_stack) %08lx\n" , (unsigned long) current->mm->start_stack);
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printk("(brk) %08lx\n" , (unsigned long) current->mm->brk);
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#endif
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map_hpux_gateway_page(current,current->mm);
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start_thread_som(regs, som_entry, bprm->p);
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return 0;
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/* error cleanup */
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out_free:
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kfree(hpuxhdr);
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out:
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return retval;
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}
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static int load_som_library(struct file *f)
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{
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/* No lib support in SOM yet. gizza chance.. */
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return -ENOEXEC;
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}
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/* Install the SOM loader.
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* N.B. We *rely* on the table being the right size with the
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* right number of free slots...
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*/
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static int __init init_som_binfmt(void)
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{
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register_binfmt(&som_format);
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return 0;
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}
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static void __exit exit_som_binfmt(void)
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{
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/* Remove the SOM loader. */
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unregister_binfmt(&som_format);
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}
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core_initcall(init_som_binfmt);
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module_exit(exit_som_binfmt);
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MODULE_LICENSE("GPL");
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@ -370,7 +370,6 @@ header-y += snmp.h
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header-y += sock_diag.h
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header-y += socket.h
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header-y += sockios.h
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header-y += som.h
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header-y += sonet.h
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header-y += sonypi.h
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header-y += soundcard.h
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@ -1,154 +0,0 @@
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#ifndef _LINUX_SOM_H
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#define _LINUX_SOM_H
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/* File format definition for SOM executables / shared libraries */
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/* we need struct timespec */
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#include <linux/time.h>
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#define SOM_PAGESIZE 4096
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/* this is the SOM header */
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struct som_hdr {
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short system_id; /* magic number - system */
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short a_magic; /* magic number - file type */
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unsigned int version_id; /* versiod ID: YYMMDDHH */
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struct timespec file_time; /* system clock */
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unsigned int entry_space; /* space for entry point */
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unsigned int entry_subspace; /* subspace for entry point */
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unsigned int entry_offset; /* offset of entry point */
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unsigned int aux_header_location; /* auxiliary header location */
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unsigned int aux_header_size; /* auxiliary header size */
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unsigned int som_length; /* length of entire SOM */
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unsigned int presumed_dp; /* compiler's DP value */
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unsigned int space_location; /* space dictionary location */
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unsigned int space_total; /* number of space entries */
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unsigned int subspace_location; /* subspace entries location */
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unsigned int subspace_total; /* number of subspace entries */
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unsigned int loader_fixup_location; /* MPE/iX loader fixup */
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unsigned int loader_fixup_total; /* number of fixup records */
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unsigned int space_strings_location; /* (sub)space names */
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unsigned int space_strings_size; /* size of strings area */
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unsigned int init_array_location; /* reserved */
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unsigned int init_array_total; /* reserved */
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unsigned int compiler_location; /* module dictionary */
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unsigned int compiler_total; /* number of modules */
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unsigned int symbol_location; /* symbol dictionary */
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unsigned int symbol_total; /* number of symbols */
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unsigned int fixup_request_location; /* fixup requests */
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unsigned int fixup_request_total; /* number of fixup requests */
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unsigned int symbol_strings_location;/* module & symbol names area */
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unsigned int symbol_strings_size; /* size of strings area */
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unsigned int unloadable_sp_location; /* unloadable spaces location */
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unsigned int unloadable_sp_size; /* size of data */
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unsigned int checksum;
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};
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/* values for system_id */
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#define SOM_SID_PARISC_1_0 0x020b
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#define SOM_SID_PARISC_1_1 0x0210
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#define SOM_SID_PARISC_2_0 0x0214
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/* values for a_magic */
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#define SOM_LIB_EXEC 0x0104
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#define SOM_RELOCATABLE 0x0106
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#define SOM_EXEC_NONSHARE 0x0107
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#define SOM_EXEC_SHARE 0x0108
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#define SOM_EXEC_DEMAND 0x010B
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#define SOM_LIB_DYN 0x010D
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#define SOM_LIB_SHARE 0x010E
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#define SOM_LIB_RELOC 0x0619
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/* values for version_id. Decimal not hex, yes. Grr. */
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#define SOM_ID_OLD 85082112
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#define SOM_ID_NEW 87102412
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struct aux_id {
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unsigned int mandatory :1; /* the linker must understand this */
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unsigned int copy :1; /* Must be copied by the linker */
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unsigned int append :1; /* Must be merged by the linker */
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unsigned int ignore :1; /* Discard section if unknown */
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unsigned int reserved :12;
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unsigned int type :16; /* Header type */
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unsigned int length; /* length of _following_ data */
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};
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/* The Exec Auxiliary Header. Called The HP-UX Header within HP apparently. */
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struct som_exec_auxhdr {
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struct aux_id som_auxhdr;
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int exec_tsize; /* Text size in bytes */
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int exec_tmem; /* Address to load text at */
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int exec_tfile; /* Location of text in file */
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int exec_dsize; /* Data size in bytes */
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int exec_dmem; /* Address to load data at */
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int exec_dfile; /* Location of data in file */
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int exec_bsize; /* Uninitialised data (bss) */
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int exec_entry; /* Address to start executing */
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int exec_flags; /* loader flags */
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int exec_bfill; /* initialisation value for bss */
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};
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/* Oh, the things people do to avoid casts. Shame it'll break with gcc's
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* new aliasing rules really.
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*/
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union name_pt {
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char * n_name;
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unsigned int n_strx;
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};
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/* The Space Dictionary */
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struct space_dictionary_record {
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union name_pt name; /* index to subspace name */
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unsigned int is_loadable :1; /* loadable */
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unsigned int is_defined :1; /* defined within file */
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unsigned int is_private :1; /* not sharable */
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unsigned int has_intermediate_code :1; /* contains intermediate code */
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unsigned int is_tspecific :1; /* thread specific */
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unsigned int reserved :11; /* for future expansion */
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unsigned int sort_key :8; /* for linker */
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unsigned int reserved2 :8; /* for future expansion */
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int space_number; /* index */
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int subspace_index; /* index into subspace dict */
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unsigned int subspace_quantity; /* number of subspaces */
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int loader_fix_index; /* for loader */
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||||
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 */
|
||||
Loading…
Reference in New Issue