NetBSD-5.0.2/sys/compat/irix/irix_syssgi.c
/* $NetBSD: irix_syssgi.c,v 1.48 2008/04/28 20:23:42 martin Exp $ */
/*-
* Copyright (c) 2001, 2002, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: irix_syssgi.c,v 1.48 2008/04/28 20:23:42 martin Exp $");
#if defined(_KERNEL_OPT)
#include "opt_ddb.h"
#endif
#ifndef ELFSIZE
#define ELFSIZE 32
#endif
/* round up and down to page boundaries. Borrowed from sys/kern/exec_elf32.c */
#define ELF_ROUND(a, b) (((a) + (b) - 1) & ~((b) - 1))
#define ELF_TRUNC(a, b) ((a) & ~((b) - 1))
#include <sys/types.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/filedesc.h>
#include <sys/buf.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/resourcevar.h>
#include <sys/sysctl.h>
#include <sys/exec.h>
#include <sys/exec_elf.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <uvm/uvm_extern.h>
#include <compat/common/compat_util.h>
#include <compat/svr4/svr4_types.h>
#include <compat/irix/irix_types.h>
#include <compat/irix/irix_signal.h>
#include <compat/irix/irix_exec.h>
#include <compat/irix/irix_prctl.h>
#include <compat/irix/irix_syscall.h>
#include <compat/irix/irix_syscallargs.h>
#include <compat/irix/irix_syssgi.h>
/* In sys/kern/exec_elf32.c */
void ELFNAME(load_psection)(struct exec_vmcmd_set *, struct vnode *,
const Elf_Phdr *, Elf_Addr *, u_long *, int *, int);
static int irix_syssgi_mapelf(int, Elf_Phdr *, int,
struct lwp *, register_t *);
static int irix_syssgi_sysconf(int name, struct lwp *, register_t *);
static int irix_syssgi_pathconf(char *, int, struct lwp *, register_t *);
int
irix_sys_syssgi(struct lwp *l, const struct irix_sys_syssgi_args *uap, register_t *retval)
{
/* {
syscallarg(int) request;
syscallarg(void *) arg1;
syscallarg(void *) arg2;
syscallarg(void *) arg3;
syscallarg(void *) arg4;
syscallarg(void *) arg5;
} */
struct proc *p = l->l_proc;
int request = SCARG(uap, request);
void *arg1, *arg2, *arg3;
#ifdef DEBUG_IRIX
printf("irix_sys_syssgi(): request = %d\n", request);
#endif
switch(request) {
case IRIX_SGI_SYSID: /* Get HostID */
*retval = (register_t)hostid;
break;
case IRIX_SGI_SETGROUPS: { /* setgroups(2) */
struct sys_setgroups_args cup;
SCARG(&cup, gidsetsize) = (int)SCARG(uap, arg1);
SCARG(&cup, gidset) = (gid_t *)SCARG(uap, arg2);
return (sys_setgroups(l, &cup, retval));
break;
}
case IRIX_SGI_GETGROUPS: { /* getgroups(2) */
struct sys_getgroups_args cup;
SCARG(&cup, gidsetsize) = (int)SCARG(uap, arg1);
SCARG(&cup, gidset) = (gid_t *)SCARG(uap, arg2);
return (sys_getgroups(l, &cup, retval));
break;
}
case IRIX_SGI_SETSID: /* Set session ID: setsid(2) */
return (sys_setsid(l, NULL, retval));
break;
case IRIX_SGI_GETSID: { /* Get session ID: getsid(2) */
struct sys_getsid_args cup;
SCARG(&cup, pid) = (pid_t)SCARG(uap, arg1);
return (sys_getsid(l, &cup, retval));
break;
}
case IRIX_SGI_GETPGID: {/* Get parent process GID: getpgid(2) */
struct sys_getpgid_args cup;
SCARG(&cup, pid) = (pid_t)SCARG(uap, arg1);
return (sys_getpgid(l, &cup, retval));
break;
}
case IRIX_SGI_SETPGID: {/* Get parent process GID: setpgid(2) */
struct sys_setpgid_args cup;
SCARG(&cup, pid) = (pid_t)SCARG(uap, arg1);
SCARG(&cup, pgid) = (pid_t)SCARG(uap, arg2);
return (sys_setpgid(l, &cup, retval));
break;
}
case IRIX_SGI_PATHCONF: /* Get file limits: pathconf(3) */
return irix_syssgi_pathconf((char *)SCARG(uap, arg1),
(int)SCARG(uap, arg2), l, retval);
break;
case IRIX_SGI_RUSAGE: { /* BSD getrusage(2) */
struct sys_getrusage_args cup;
SCARG(&cup, who) = (int)SCARG(uap, arg1);
SCARG(&cup, rusage) = (struct rusage *)SCARG(uap, arg2);
return sys_getrusage(l, &cup, retval);
break;
}
case IRIX_SGI_NUM_MODULES: /* <sys/systeminfo.h> get_num_modules() */
*retval = 1;
return 0;
break;
case IRIX_SGI_MODULE_INFO: { /* <sys/systeminfo.h> get_module_info() */
int module_num = (int)SCARG(uap, arg1);
struct irix_module_info_s *imip = SCARG(uap, arg2);
int mss = (int)SCARG(uap, arg3);
struct irix_module_info_s imi;
char *idx;
if (module_num != 0)
return EINVAL;
imi.serial_num = (u_int64_t)hostid;
imi.mod_num = 0;
(void)snprintf(imi.serial_str, IRIX_MAX_SERIAL_SIZE,
"0800%08x", (u_int32_t)hostid);
/* Convert to upper case */
for (idx = imi.serial_str; *idx; idx++)
if (*idx >= 'a' && *idx <= 'f')
*idx += ('A' - 'a');
/* Don't copyout irrelevant data on user request */
if (mss > sizeof(struct irix_module_info_s))
mss = sizeof(struct irix_module_info_s);
return copyout(&imi, imip, mss);
break;
}
case IRIX_SGI_RDNAME: { /* Read Processes' name */
struct proc *tp;
arg1 = SCARG(uap, arg1); /* PID of the process */
arg2 = SCARG(uap, arg2); /* Address of user buffer */
arg3 = SCARG(uap, arg3); /* Length of user buffer */
tp = pfind((pid_t)arg1);
if (tp == NULL || \
tp->p_psstr == NULL || \
tp->p_psstr->ps_argvstr == NULL || \
tp->p_psstr->ps_argvstr[0] == NULL)
return 0;
*retval = (register_t)copyout(tp->p_psstr->ps_argvstr[0],
(void *)arg2, (size_t)arg3);
break;
}
case IRIX_SGI_TUNE: /* Tune system variables */
case IRIX_SGI_IDBG: /* Kernel debugging */
case IRIX_SGI_INVENT: /* Get system inventory */
case IRIX_SGI_SETLED: /* Turn on/off LEDs */
case IRIX_SGI_SETNVRAM: /* Sets a NVRAM variable value */
case IRIX_SGI_GETNVRAM: /* Gets a NVRAM variable value */
return EINVAL;
break;
case IRIX_SGI_ELFMAP: /* Maps an ELF image */
arg1 = SCARG(uap, arg1); /* file descriptor */
arg2 = SCARG(uap, arg2); /* ptr to ELF program header array */
arg3 = SCARG(uap, arg3); /* array's length */
return irix_syssgi_mapelf((int)arg1, (Elf_Phdr *)arg2,
(int)arg3, l, retval);
break;
case IRIX_SGI_USE_FP_BCOPY: /* bcopy and bzero can use FPU or not */
/*
* Our kernel does not use FPU, hence we do nothing.
*/
break;
case IRIX_SGI_TOSSTSAVE: /* Kill saved pregions */
/*
* Our kernel does not seem to save such "pregions",
* therefore we do not have to do anything.
*/
break;
case IRIX_SGI_SYSCONF: /* POSIX sysconf */
arg1 = SCARG(uap, arg1); /* system variable name */
return irix_syssgi_sysconf((int)arg1, l, retval);
break;
case IRIX_SGI_SATCTL: /* control audit stream */
case IRIX_SGI_RXEV_GET: /* Trusted IRIX call */
/* Undocumented (?) and unimplemented */
return 0;
break;
case IRIX_SGI_FDHI: /* getdtablehi(3): get higher open fd + 1 */
*retval = (register_t)(p->p_fd->fd_lastfile + 1);
return 0;
break;
default:
printf("Warning: call to unimplemented syssgi() command %d\n",
request);
return EINVAL;
break;
}
return 0;
}
static int
irix_syssgi_mapelf(int fd, Elf_Phdr *ph, int count, struct lwp *l, register_t *retval)
{
Elf_Phdr *kph;
Elf_Phdr *pht;
int error = 0;
int i,j;
int prot;
int flags;
u_long size;
Elf_Addr uaddr;
Elf_Addr reloc_offset;
file_t *fp;
struct exec_vmcmd_set vcset;
struct exec_vmcmd *base_vcp = NULL;
struct vnode *vp;
struct vm_map_entry *ret;
struct exec_vmcmd *vcp;
int need_relocation;
vcset.evs_cnt = 0;
vcset.evs_used = 0;
kph = (Elf_Phdr *)malloc(sizeof(Elf_Phdr) * count, M_TEMP, M_WAITOK);
error = copyin(ph, kph, sizeof(Elf_Phdr) * count);
if (error)
goto bad;
pht = kph;
need_relocation = 0;
for (i = 0; i < count; i++) {
/* Check that each ELF sections is loadable */
if (pht->p_type != PT_LOAD) {
error = ENOEXEC;
goto bad;
}
/*
* Check that the section load addresses are increasing
* with the section in the program header array. We do
* not support any other situation.
*/
if (pht->p_vaddr < kph->p_vaddr) {
#ifdef DEBUG_IRIX
printf("mapelf: unsupported psection order\n");
#endif
error = EINVAL;
goto bad;
}
/*
* Check that the default load addresses are free.
* If not, we will have to perform a relocation
*/
ret = uvm_map_findspace(&l->l_proc->p_vmspace->vm_map,
pht->p_vaddr, pht->p_memsz, (vaddr_t *)(void *)&uaddr,
NULL, 0, 0, UVM_FLAG_FIXED);
if (ret == NULL)
need_relocation = 1;
pht++;
}
/*
* Perform a relocation
*/
if (need_relocation) {
/*
* compute the size needed by the section union. This
* assumes that the section load addresses are increasing.
* (And also that the sections are not overlapping)
*/
pht--;
size = ELF_ROUND((pht->p_vaddr + pht->p_memsz), pht->p_align) -
ELF_TRUNC(kph->p_vaddr, kph->p_align);
/* Find a free place for the sections */
ret = uvm_map_findspace(&l->l_proc->p_vmspace->vm_map,
IRIX_MAPELF_RELOCATE, size, (vaddr_t *)(void *)&uaddr,
NULL, 0, kph->p_align, 0);
if (ret == NULL) {
error = ENOMEM;
goto bad;
}
/*
* Relocate the sections, all with the same offset.
*/
reloc_offset = uaddr - kph->p_vaddr;
pht = kph;
for (i = 0; i < count; i++) {
#ifdef DEBUG_IRIX
printf("mapelf: relocating section %d from %p to %p\n",
i, (void *)pht->p_vaddr,
(void *)(pht->p_vaddr + reloc_offset));
#endif
pht->p_vaddr += reloc_offset;
pht++;
}
}
/* Find the file's vnode */
fp = fd_getfile(fd);
if (fp == NULL) {
error = EBADF;
goto bad;
}
vp = fp->f_data;
error = vn_marktext(vp);
if (error)
goto bad_unuse;
/*
* Load the sections
*/
pht = kph;
for (i = 0; i < count; i++) {
#ifdef DEBUG_IRIX
printf("mapelf: loading section %d (len 0x%08lx) at %p\n",
i, (long)pht->p_memsz, (void *)pht->p_vaddr);
#endif
/* Build the vmcmds for loading the section */
kill_vmcmds(&vcset);
uaddr = pht->p_vaddr;
size = 0;
prot = 0;
flags = VMCMD_BASE;
ELFNAME(load_psection)(&vcset, vp, pht, &uaddr,
&size, &prot, flags);
/* Execute the vmcmds */
for (j = 0; j < vcset.evs_used && !error; j++) {
vcp = &vcset.evs_cmds[j];
if (vcp->ev_flags & VMCMD_RELATIVE) {
if (base_vcp == NULL)
panic("irix_syssgi_mapelf(): bad vmcmd base");
vcp->ev_addr += base_vcp->ev_addr;
}
IRIX_VM_SYNC(l->l_proc, error = (*vcp->ev_proc)(l, vcp));
if (error)
goto bad_unuse;
}
pht++;
}
*retval = (register_t)kph->p_vaddr;
bad_unuse:
fd_putfile(fd);
bad:
free(kph, M_TEMP);
return error;
}
static int
irix_syssgi_sysconf(int name, struct lwp *l, register_t *retval)
{
struct proc *p = l->l_proc;
int error = 0;
int mib[2], value;
size_t len = sizeof(value);
switch (name) {
case IRIX_SC_ARG_MAX:
mib[0] = CTL_KERN;
mib[1] = KERN_ARGMAX;
break;
case IRIX_SC_CHILD_MAX:
*retval = (register_t)p->p_rlimit[RLIMIT_NPROC].rlim_cur;
return 0;
break;
case IRIX_SC_CLK_TCK:
*retval = hz;
return 0;
break;
case IRIX_SC_NGROUPS_MAX:
mib[0] = CTL_KERN;
mib[1] = KERN_NGROUPS;
break;
case IRIX_SC_OPEN_MAX:
*retval = (register_t)p->p_rlimit[RLIMIT_NOFILE].rlim_cur;
return 0;
break;
case IRIX_SC_JOB_CONTROL:
mib[0] = CTL_KERN;
mib[1] = KERN_JOB_CONTROL;
break;
case IRIX_SC_SAVED_IDS:
mib[0] = CTL_KERN;
mib[1] = KERN_SAVED_IDS;
break;
case IRIX_SC_IP_SECOPTS:/* IP security options */
/* Trusted IRIX capabilities are unsupported */
case IRIX_SC_ACL: /* ACcess Lists */
case IRIX_SC_AUDIT: /* Audit */
case IRIX_SC_INF: /* Information labels */
case IRIX_SC_MAC: /* Mandatory Access Control */
case IRIX_SC_CAP: /* Capabilities */
*retval = 0;
return 0;
break;
case IRIX_SC_PAGESIZE:
mib[0] = CTL_HW;
mib[1] = HW_PAGESIZE;
break;
case IRIX_SC_PASS_MAX:
case IRIX_SC_VERSION:
default:
printf("Warning: syssgi(SYSCONF) unsupported variable %d\n",
name);
return EINVAL;
break;
}
/*
* calling into sysctl with superuser privs, but we don't mind
* 'cause we're only querying a value.
*/
error = old_sysctl(&mib[0], 2, &value, &len, NULL, 0, NULL);
if (error == 0)
*retval = value;
return (error);
}
static int
irix_syssgi_pathconf(char *path, int name, struct lwp *l, register_t *retval)
{
struct sys_pathconf_args cup;
int bname;
switch (name) {
case IRIX_PC_LINK_MAX:
case IRIX_PC_MAX_CANON:
case IRIX_PC_MAX_INPUT:
case IRIX_PC_NAME_MAX:
case IRIX_PC_PATH_MAX:
case IRIX_PC_PIPE_BUF:
case IRIX_PC_CHOWN_RESTRICTED:
case IRIX_PC_NO_TRUNC:
case IRIX_PC_VDISABLE:
case IRIX_PC_SYNC_IO:
bname = name;
break;
case IRIX_PC_FILESIZEBITS:
bname = _PC_FILESIZEBITS;
break;
case IRIX_PC_PRIO_IO:
case IRIX_PC_ASYNC_IO:
case IRIX_PC_ABI_ASYNC_IO:
case IRIX_PC_ABI_AIO_XFER_MAX:
default:
printf("Warning: unimplemented IRIX pathconf() command %d\n",
name);
*retval = 0;
return 0;
break;
}
SCARG(&cup, path) = path;
SCARG(&cup, name) = bname;
return sys_pathconf(l, &cup, retval);
}