diff options
Diffstat (limited to 'sysdeps/mach')
| -rw-r--r-- | sysdeps/mach/hurd/bits/posix_opt.h | 5 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/mlock.c | 47 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/munlock.c | 45 |
3 files changed, 96 insertions, 1 deletions
diff --git a/sysdeps/mach/hurd/bits/posix_opt.h b/sysdeps/mach/hurd/bits/posix_opt.h index c6cdf530f3..02280002a2 100644 --- a/sysdeps/mach/hurd/bits/posix_opt.h +++ b/sysdeps/mach/hurd/bits/posix_opt.h @@ -1,5 +1,5 @@ /* Define POSIX options for GNU/Hurd. - Copyright (C) 1998, 2000 Free Software Foundation, Inc. + Copyright (C) 1998,2000,01 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -40,6 +40,9 @@ /* Mapping of files to memory is supported. */ #define _POSIX_MAPPED_FILES 1 +/* Locking of ranges of memory is supported. */ +#define _POSIX_MEMLOCK_RANGE 1 + /* Setting of memory protections is supported. */ #define _POSIX_MEMORY_PROTECTION 1 diff --git a/sysdeps/mach/hurd/mlock.c b/sysdeps/mach/hurd/mlock.c new file mode 100644 index 0000000000..e7086c1b68 --- /dev/null +++ b/sysdeps/mach/hurd/mlock.c @@ -0,0 +1,47 @@ +/* mlock -- guarantee pages are resident in memory. Mach/Hurd version. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sys/types.h> +#include <sys/mman.h> +#include <errno.h> +#include <hurd.h> +#include <mach/mach_host.h> + +/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to + be memory resident. */ + +int +mlock (const void *addr, size_t len) +{ + mach_port_t hostpriv; + vm_address_t page; + error_t err; + + err = __get_privileged_ports (&hostpriv, NULL); + if (err) + return __hurd_fail (EPERM); + + page = trunc_page ((vm_address_t) addr); + len = round_page ((vm_address_t) addr + len) - page; + err = __vm_wire (hostpriv, __mach_task_self (), page, len, + VM_PROT_ALL); /* XXX ? */ + __mach_port_deallocate (__mach_task_self (), hostpriv); + + return err ? __hurd_fail (err) : 0; +} diff --git a/sysdeps/mach/hurd/munlock.c b/sysdeps/mach/hurd/munlock.c new file mode 100644 index 0000000000..a91f9f0986 --- /dev/null +++ b/sysdeps/mach/hurd/munlock.c @@ -0,0 +1,45 @@ +/* munlock -- undo the effects of prior mlock calls. Mach/Hurd version. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sys/types.h> +#include <sys/mman.h> +#include <errno.h> +#include <hurd.h> +#include <mach/mach_host.h> + +/* Undo the effects on these whole pages of any prior mlock calls. */ + +int +munlock (const void *addr, size_t len) +{ + mach_port_t hostpriv; + vm_address_t page; + error_t err; + + err = __get_privileged_ports (&hostpriv, NULL); + if (err) + return __hurd_fail (EPERM); + + page = trunc_page ((vm_address_t) addr); + len = round_page ((vm_address_t) addr + len) - page; + err = __vm_wire (hostpriv, __mach_task_self (), page, len, VM_PROT_NONE); + __mach_port_deallocate (__mach_task_self (), hostpriv); + + return err ? __hurd_fail (err) : 0; +} |