bsd-user/bsd-mem.c

   1 /*
   2  *  memory management system conversion routines
   3  *
   4  *  Copyright (c) 2013 Stacey D. Son
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #include "qemu/osdep.h"
  20 #include "qemu.h"
  21 #include "qemu-bsd.h"
  22
  23 struct bsd_shm_regions bsd_shm_regions[N_BSD_SHM_REGIONS];
  24
  25 abi_ulong target_brk;
  26 abi_ulong initial_target_brk;
  27
  28 void target_set_brk(abi_ulong new_brk)
  29 {
  30     target_brk = TARGET_PAGE_ALIGN(new_brk);
  31     initial_target_brk = target_brk;
  32 }
  33
  34 void target_to_host_ipc_perm__locked(struct ipc_perm *host_ip,
  35                                      struct target_ipc_perm *target_ip)
  36 {
  37     __get_user(host_ip->cuid, &target_ip->cuid);
  38     __get_user(host_ip->cgid, &target_ip->cgid);
  39     __get_user(host_ip->uid,  &target_ip->uid);
  40     __get_user(host_ip->gid,  &target_ip->gid);
  41     __get_user(host_ip->mode, &target_ip->mode);
  42     __get_user(host_ip->seq,  &target_ip->seq);
  43     __get_user(host_ip->key,  &target_ip->key);
  44 }
  45
  46 abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
  47                                  abi_ulong target_addr)
  48 {
  49     struct target_shmid_ds *target_sd;
  50
  51     if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) {
  52         return -TARGET_EFAULT;
  53     }
  54
  55     target_to_host_ipc_perm__locked(&(host_sd->shm_perm),
  56                                     &(target_sd->shm_perm));
  57
  58     __get_user(host_sd->shm_segsz,  &target_sd->shm_segsz);
  59     __get_user(host_sd->shm_lpid,   &target_sd->shm_lpid);
  60     __get_user(host_sd->shm_cpid,   &target_sd->shm_cpid);
  61     __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
  62     __get_user(host_sd->shm_atime,  &target_sd->shm_atime);
  63     __get_user(host_sd->shm_dtime,  &target_sd->shm_dtime);
  64     __get_user(host_sd->shm_ctime,  &target_sd->shm_ctime);
  65     unlock_user_struct(target_sd, target_addr, 0);
  66
  67     return 0;
  68 }
  69
  70 void host_to_target_ipc_perm__locked(struct target_ipc_perm *target_ip,
  71                                      struct ipc_perm *host_ip)
  72 {
  73     __put_user(host_ip->cuid, &target_ip->cuid);
  74     __put_user(host_ip->cgid, &target_ip->cgid);
  75     __put_user(host_ip->uid,  &target_ip->uid);
  76     __put_user(host_ip->gid,  &target_ip->gid);
  77     __put_user(host_ip->mode, &target_ip->mode);
  78     __put_user(host_ip->seq,  &target_ip->seq);
  79     __put_user(host_ip->key,  &target_ip->key);
  80 }
  81
  82 abi_long host_to_target_shmid_ds(abi_ulong target_addr,
  83                                  struct shmid_ds *host_sd)
  84 {
  85     struct target_shmid_ds *target_sd;
  86
  87     if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) {
  88         return -TARGET_EFAULT;
  89     }
  90
  91     host_to_target_ipc_perm__locked(&(target_sd->shm_perm),
  92                                     &(host_sd->shm_perm));
  93
  94     __put_user(host_sd->shm_segsz,  &target_sd->shm_segsz);
  95     __put_user(host_sd->shm_lpid,   &target_sd->shm_lpid);
  96     __put_user(host_sd->shm_cpid,   &target_sd->shm_cpid);
  97     __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
  98     __put_user(host_sd->shm_atime,  &target_sd->shm_atime);
  99     __put_user(host_sd->shm_dtime,  &target_sd->shm_dtime);
 100     __put_user(host_sd->shm_ctime,  &target_sd->shm_ctime);
 101     unlock_user_struct(target_sd, target_addr, 1);
 102
 103     return 0;
 104 }