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/*
* process related system call shims and definitions
*
* Copyright (c) 2013-2014 Stacey D. Son
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BSD_PROC_H_
#define BSD_PROC_H_
#include <sys/resource.h>
#include "qemu-bsd.h"
#include "gdbstub/syscalls.h"
#include "qemu/plugin.h"
extern int _getlogin(char*, int);
int bsd_get_ncpu(void);
/* exit(2) */
static inline abi_long do_bsd_exit(void *cpu_env, abi_long arg1)
{
#ifdef TARGET_GPROF
_mcleanup();
#endif
gdb_exit(arg1);
qemu_plugin_user_exit();
_exit(arg1);
return 0;
}
/* getgroups(2) */
static inline abi_long do_bsd_getgroups(abi_long gidsetsize, abi_long arg2)
{
abi_long ret;
uint32_t *target_grouplist;
g_autofree gid_t *grouplist;
int i;
grouplist = g_try_new(gid_t, gidsetsize);
ret = get_errno(getgroups(gidsetsize, grouplist));
if (gidsetsize != 0) {
if (!is_error(ret)) {
target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 2, 0);
if (!target_grouplist) {
return -TARGET_EFAULT;
}
for (i = 0; i < ret; i++) {
target_grouplist[i] = tswap32(grouplist[i]);
}
unlock_user(target_grouplist, arg2, gidsetsize * 2);
}
}
return ret;
}
/* setgroups(2) */
static inline abi_long do_bsd_setgroups(abi_long gidsetsize, abi_long arg2)
{
uint32_t *target_grouplist;
g_autofree gid_t *grouplist;
int i;
grouplist = g_try_new(gid_t, gidsetsize);
target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 2, 1);
if (!target_grouplist) {
return -TARGET_EFAULT;
}
for (i = 0; i < gidsetsize; i++) {
grouplist[i] = tswap32(target_grouplist[i]);
}
unlock_user(target_grouplist, arg2, 0);
return get_errno(setgroups(gidsetsize, grouplist));
}
/* umask(2) */
static inline abi_long do_bsd_umask(abi_long arg1)
{
return get_errno(umask(arg1));
}
/* setlogin(2) */
static inline abi_long do_bsd_setlogin(abi_long arg1)
{
abi_long ret;
void *p;
p = lock_user_string(arg1);
if (p == NULL) {
return -TARGET_EFAULT;
}
ret = get_errno(setlogin(p));
unlock_user(p, arg1, 0);
return ret;
}
/* getlogin(2) */
static inline abi_long do_bsd_getlogin(abi_long arg1, abi_long arg2)
{
abi_long ret;
void *p;
p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
if (p == NULL) {
return -TARGET_EFAULT;
}
ret = get_errno(_getlogin(p, arg2));
unlock_user(p, arg1, arg2);
return ret;
}
/* getrusage(2) */
static inline abi_long do_bsd_getrusage(abi_long who, abi_ulong target_addr)
{
abi_long ret;
struct rusage rusage;
ret = get_errno(getrusage(who, &rusage));
if (!is_error(ret)) {
host_to_target_rusage(target_addr, &rusage);
}
return ret;
}
/* getrlimit(2) */
static inline abi_long do_bsd_getrlimit(abi_long arg1, abi_ulong arg2)
{
abi_long ret;
int resource = target_to_host_resource(arg1);
struct target_rlimit *target_rlim;
struct rlimit rlim;
switch (resource) {
case RLIMIT_STACK:
rlim.rlim_cur = target_dflssiz;
rlim.rlim_max = target_maxssiz;
ret = 0;
break;
case RLIMIT_DATA:
rlim.rlim_cur = target_dfldsiz;
rlim.rlim_max = target_maxdsiz;
ret = 0;
break;
default:
ret = get_errno(getrlimit(resource, &rlim));
break;
}
if (!is_error(ret)) {
if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) {
return -TARGET_EFAULT;
}
target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
unlock_user_struct(target_rlim, arg2, 1);
}
return ret;
}
/* setrlimit(2) */
static inline abi_long do_bsd_setrlimit(abi_long arg1, abi_ulong arg2)
{
abi_long ret;
int resource = target_to_host_resource(arg1);
struct target_rlimit *target_rlim;
struct rlimit rlim;
if (RLIMIT_STACK == resource) {
/* XXX We should, maybe, allow the stack size to shrink */
ret = -TARGET_EPERM;
} else {
if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) {
return -TARGET_EFAULT;
}
rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
unlock_user_struct(target_rlim, arg2, 0);
ret = get_errno(setrlimit(resource, &rlim));
}
return ret;
}
#endif /* !BSD_PROC_H_ */
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