diff options
Diffstat (limited to 'libshouldbeinlibc')
| -rw-r--r-- | libshouldbeinlibc/maptime.c | 66 |
1 files changed, 13 insertions, 53 deletions
diff --git a/libshouldbeinlibc/maptime.c b/libshouldbeinlibc/maptime.c index 95ae64cb..c89557a8 100644 --- a/libshouldbeinlibc/maptime.c +++ b/libshouldbeinlibc/maptime.c @@ -1,6 +1,6 @@ /* Support for mach's mapped time - Copyright (C) 1996 Free Software Foundation, Inc. + Copyright (C) 1996, 1997 Free Software Foundation, Inc. Written by Miles Bader <miles@gnu.ai.mit.edu> @@ -18,6 +18,7 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include <fcntl.h> #include <hurd.h> #include <mach.h> #include <device/device.h> @@ -34,11 +35,11 @@ maptime_map (int use_mach_dev, char *dev_name, volatile struct mapped_time_value **mtime) { error_t err; - device_t device; - mach_port_t mobj; + mach_port_t memobj; if (use_mach_dev) { + device_t device; mach_port_t device_master; err = get_privileged_ports (0, &device_master); @@ -47,72 +48,31 @@ maptime_map (int use_mach_dev, char *dev_name, err = device_open (device_master, 0, dev_name ?: "time", &device); mach_port_deallocate (mach_task_self (), device_master); } + + err = device_map (device, VM_PROT_READ, 0, sizeof *mtime, &memobj, 0); } else { - mach_msg_type_number_t data_len = 100; - mach_msg_type_number_t num_ints = 10, num_ports = 10, num_offsets = 10; - int _ints[num_ints], *ints = _ints; - mach_port_t _ports[num_ports], *ports = _ports; - off_t _offsets[num_offsets], *offsets = _offsets; - char _data[data_len], *data = _data; - file_t node = file_name_lookup (dev_name ?: "/dev/time", 0, 0); + mach_port_t wr_memobj; + file_t node = file_name_lookup (dev_name ?: "/dev/time", O_RDONLY, 0); if (node == MACH_PORT_NULL) return errno; - err = file_get_storage_info (node, &ports, &num_ports, &ints, &num_ints, - &offsets, &num_offsets, &data, &data_len); - - if (! err) - { - int i; - - if (num_ints >= 6 && ints[0] == STORAGE_DEVICE) - /* This a device. */ - if (num_ports != 1) - err = EGRATUITOUS; - else if (! MACH_PORT_VALID (ports[0])) - err = EPERM; /* Didn't pass back the device port. XXX */ - else - { - device = ports[0]; - ports[0] = MACH_PORT_NULL; /* Don't deallocate here. */ - } - else - err = ENODEV; /* Not admitting to being a device. XXX */ - - /* Deallocate any ports we got back. */ - for (i = 0; i < num_ports; i++) - if (MACH_PORT_VALID (ports[i])) - mach_port_deallocate (mach_task_self (), ports[i]); - - /* Deallocate any out of line vectors return by gsi. */ -#define DISCARD_MEM(v, vl, b) \ - if (vl && v != b) \ - vm_deallocate (mach_task_self (), (vm_address_t)v, vl * sizeof *v); - DISCARD_MEM (ints, num_ints, _ints); - DISCARD_MEM (offsets, num_offsets, _offsets); - DISCARD_MEM (ports, num_ports, _ports); - DISCARD_MEM (data, data_len, _data); - } + err = io_map (node, &memobj, &wr_memobj); + if (!err && wr_memobj != MACH_PORT_NULL) + mach_port_deallocate (mach_task_self (), wr_memobj); mach_port_deallocate (mach_task_self (), node); } - if (err) - return err; - - err = device_map (device, VM_PROT_READ, 0, sizeof *mtime, &mobj, 0); if (! err) { err = vm_map (mach_task_self (), (vm_address_t *)mtime, sizeof *mtime, 0, 1, - mobj, 0, 0, VM_PROT_READ, VM_PROT_READ, VM_INHERIT_NONE); - mach_port_deallocate (mach_task_self (), mobj); + memobj, 0, 0, VM_PROT_READ, VM_PROT_READ, VM_INHERIT_NONE); + mach_port_deallocate (mach_task_self (), memobj); } - mach_port_deallocate (mach_task_self (), device); - return err; } |