fb919e4d5a
other "system" header files. Also help the deprecation of lockmgr.h by making it a sub-include of sys/lock.h and removing sys/lockmgr.h form kernel .c files. Sort sys/*.h includes where possible in affected files. OK'ed by: bde (with reservations)
275 lines
7.2 KiB
C
275 lines
7.2 KiB
C
/*-
|
|
* Copyright (c) 1994-1996 Søren Schmidt
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software withough specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/* XXX we use functions that might not exist. */
|
|
#include "opt_compat.h"
|
|
|
|
#ifndef COMPAT_43
|
|
#error "Unable to compile Linux-emulator due to missing COMPAT_43 option!"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/imgact.h>
|
|
#include <sys/imgact_aout.h>
|
|
#include <sys/imgact_elf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/sysent.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_extern.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/md_var.h>
|
|
|
|
#include <alpha/linux/linux.h>
|
|
#include <alpha/linux/linux_proto.h>
|
|
#include <compat/linux/linux_util.h>
|
|
#undef szsigcode
|
|
|
|
MODULE_VERSION(linux, 1);
|
|
MODULE_DEPEND(linux, osf1, 1, 1, 1);
|
|
MODULE_DEPEND(linux, sysvmsg, 1, 1, 1);
|
|
MODULE_DEPEND(linux, sysvsem, 1, 1, 1);
|
|
MODULE_DEPEND(linux, sysvshm, 1, 1, 1);
|
|
|
|
MALLOC_DEFINE(M_LINUX, "linux", "Linux mode structures");
|
|
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
#define SHELLMAGIC 0x2123 /* #! */
|
|
#else
|
|
#define SHELLMAGIC 0x2321
|
|
#endif
|
|
|
|
extern struct linker_set linux_ioctl_handler_set;
|
|
|
|
void osendsig(sig_t catcher, int sig, sigset_t *mask, u_long code);
|
|
|
|
static int elf_linux_fixup __P((long **stack_base,
|
|
struct image_params *iparams));
|
|
static int exec_linux_imgact_try __P((struct image_params *iparams));
|
|
|
|
static int
|
|
elf_linux_fixup(long **stack_base, struct image_params *imgp)
|
|
{
|
|
long *pos;
|
|
Elf64_Auxargs *args;
|
|
|
|
args = (Elf64_Auxargs *)imgp->auxargs;
|
|
pos = *stack_base + (imgp->argc + imgp->envc + 2);
|
|
|
|
if (args->trace) {
|
|
AUXARGS_ENTRY(pos, AT_DEBUG, 1);
|
|
}
|
|
if (args->execfd != -1) {
|
|
AUXARGS_ENTRY(pos, AT_EXECFD, args->execfd);
|
|
}
|
|
AUXARGS_ENTRY(pos, AT_PHDR, args->phdr);
|
|
AUXARGS_ENTRY(pos, AT_PHENT, args->phent);
|
|
AUXARGS_ENTRY(pos, AT_PHNUM, args->phnum);
|
|
AUXARGS_ENTRY(pos, AT_PAGESZ, args->pagesz);
|
|
AUXARGS_ENTRY(pos, AT_FLAGS, args->flags);
|
|
AUXARGS_ENTRY(pos, AT_ENTRY, args->entry);
|
|
AUXARGS_ENTRY(pos, AT_BASE, args->base);
|
|
PROC_LOCK(imgp->proc);
|
|
AUXARGS_ENTRY(pos, AT_UID, imgp->proc->p_cred->p_ruid);
|
|
AUXARGS_ENTRY(pos, AT_EUID, imgp->proc->p_cred->p_svuid);
|
|
AUXARGS_ENTRY(pos, AT_GID, imgp->proc->p_cred->p_rgid);
|
|
AUXARGS_ENTRY(pos, AT_EGID, imgp->proc->p_cred->p_svgid);
|
|
PROC_UNLOCK(imgp->proc);
|
|
AUXARGS_ENTRY(pos, AT_NULL, 0);
|
|
|
|
free(imgp->auxargs, M_TEMP);
|
|
imgp->auxargs = NULL;
|
|
|
|
(*stack_base)--;
|
|
**stack_base = (long)imgp->argc;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If a linux binary is exec'ing something, try this image activator
|
|
* first. We override standard shell script execution in order to
|
|
* be able to modify the interpreter path. We only do this if a linux
|
|
* binary is doing the exec, so we do not create an EXEC module for it.
|
|
*/
|
|
static int
|
|
exec_linux_imgact_try(imgp)
|
|
struct image_params *imgp;
|
|
{
|
|
const char *head;
|
|
int error;
|
|
|
|
head = (const char *)imgp->image_header;
|
|
error = -1;
|
|
|
|
/*
|
|
* The interpreter for shell scripts run from a linux binary needs
|
|
* to be located in /compat/linux if possible in order to recursively
|
|
* maintain linux path emulation.
|
|
*/
|
|
if (((const short *)head)[0] == SHELLMAGIC) {
|
|
/*
|
|
* Run our normal shell image activator. If it succeeds
|
|
* attempt to use the alternate path for the interpreter. If
|
|
* an alternate path is found, use our stringspace to store it.
|
|
*/
|
|
if ((error = exec_shell_imgact(imgp)) == 0) {
|
|
char *rpath = NULL;
|
|
|
|
linux_emul_find(imgp->proc, NULL, linux_emul_path,
|
|
imgp->interpreter_name, &rpath, 0);
|
|
if (rpath != imgp->interpreter_name) {
|
|
int len = strlen(rpath) + 1;
|
|
|
|
if (len <= MAXSHELLCMDLEN) {
|
|
memcpy(imgp->interpreter_name, rpath,
|
|
len);
|
|
}
|
|
free(rpath, M_TEMP);
|
|
}
|
|
}
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
/*
|
|
* To maintain OSF/1 compat, linux uses BSD signals & errnos on their
|
|
* alpha port. This greatly simplfies things for us.
|
|
*/
|
|
|
|
struct sysentvec elf_linux_sysvec = {
|
|
LINUX_SYS_MAXSYSCALL,
|
|
linux_sysent,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
elf_linux_fixup,
|
|
osendsig,
|
|
linux_sigcode,
|
|
&linux_szsigcode,
|
|
0,
|
|
"Linux ELF",
|
|
elf_coredump,
|
|
exec_linux_imgact_try,
|
|
LINUX_MINSIGSTKSZ
|
|
};
|
|
|
|
static Elf64_Brandinfo linux_brand = {
|
|
ELFOSABI_LINUX,
|
|
"Linux",
|
|
"/compat/linux",
|
|
"/lib/ld-linux.so.1",
|
|
&elf_linux_sysvec
|
|
};
|
|
|
|
static Elf64_Brandinfo linux_glibc2brand = {
|
|
ELFOSABI_LINUX,
|
|
"Linux",
|
|
"/compat/linux",
|
|
"/lib/ld-linux.so.2",
|
|
&elf_linux_sysvec
|
|
};
|
|
|
|
Elf64_Brandinfo *linux_brandlist[] = {
|
|
&linux_brand,
|
|
&linux_glibc2brand,
|
|
NULL
|
|
};
|
|
|
|
static int
|
|
linux_elf_modevent(module_t mod, int type, void *data)
|
|
{
|
|
Elf64_Brandinfo **brandinfo;
|
|
int error;
|
|
|
|
error = 0;
|
|
|
|
switch(type) {
|
|
case MOD_LOAD:
|
|
for (brandinfo = &linux_brandlist[0]; *brandinfo != NULL;
|
|
++brandinfo)
|
|
if (elf_insert_brand_entry(*brandinfo) < 0)
|
|
error = EINVAL;
|
|
if (error == 0) {
|
|
linux_ioctl_register_handlers(
|
|
&linux_ioctl_handler_set);
|
|
if (bootverbose)
|
|
printf("Linux ELF exec handler installed\n");
|
|
} else
|
|
printf("cannot insert Linux ELF brand handler\n");
|
|
break;
|
|
case MOD_UNLOAD:
|
|
for (brandinfo = &linux_brandlist[0]; *brandinfo != NULL;
|
|
++brandinfo)
|
|
if (elf_brand_inuse(*brandinfo))
|
|
error = EBUSY;
|
|
if (error == 0) {
|
|
for (brandinfo = &linux_brandlist[0];
|
|
*brandinfo != NULL; ++brandinfo)
|
|
if (elf_remove_brand_entry(*brandinfo) < 0)
|
|
error = EINVAL;
|
|
}
|
|
if (error == 0) {
|
|
linux_ioctl_unregister_handlers(
|
|
&linux_ioctl_handler_set);
|
|
if (bootverbose)
|
|
printf("Linux ELF exec handler removed\n");
|
|
} else
|
|
printf("Could not deinstall ELF interpreter entry\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static moduledata_t linux_elf_mod = {
|
|
"linuxelf",
|
|
linux_elf_modevent,
|
|
0
|
|
};
|
|
|
|
DUMMY(rt_sigreturn);
|
|
|
|
DECLARE_MODULE(linuxelf, linux_elf_mod, SI_SUB_EXEC, SI_ORDER_ANY);
|