sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

custom message type for VM_SHM_UNMAP

Browse source
This commit is contained in:
Ben Gras 2014-07-26 13:53:44 +02:00 committed by Lionel Sambuc
parent e3a0e6c3c3
commit 324fc1f604
4 changed files with 12 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/minix/com.h
View file

@ -756,8 +756,6 @@
#define VM_REMAP (VM_RQ_BASE+33)
#define VM_SHM_UNMAP (VM_RQ_BASE+34)
# define VMUN_ENDPT m_mmap.forwhom
# define VMUN_ADDR m_mmap.addr
#define VM_GETPHYS (VM_RQ_BASE+35)
# define VMPHYS_ENDPT m2_i1

8
include/minix/ipc.h
View file

@ -1711,6 +1711,13 @@ typedef struct {
} mess_lsys_vm_vmremap;
_ASSERT_MSG_SIZE(mess_lsys_vm_vmremap);
typedef struct {
endpoint_t forwhom;
void *addr;
uint8_t padding[48];
} mess_lc_vm_shm_unmap;
_ASSERT_MSG_SIZE(mess_lc_vm_shm_unmap);
typedef struct {
endpoint_t m_source; /* who sent the message */
int m_type; /* what kind of message is it */
@ -1930,6 +1937,7 @@ typedef struct {
mess_vfs_lc_lseek m_vfs_lc_lseek;
mess_lsys_vm_vmremap m_lsys_vm_vmremap;
mess_lc_vm_shm_unmap m_lc_vm_shm_unmap;
mess_vfs_lchardriver_cancel m_vfs_lchardriver_cancel;
mess_vfs_lchardriver_openclose m_vfs_lchardriver_openclose;

4
lib/libc/sys-minix/mmap.c
View file

@ -134,8 +134,8 @@ int vm_unmap(endpoint_t endpt, void *addr)
message m;
memset(&m, 0, sizeof(m));
m.VMUN_ENDPT = endpt;
m.VMUN_ADDR = addr;
m.m_lc_vm_shm_unmap.forwhom = endpt;
m.m_lc_vm_shm_unmap.addr = addr;
return _syscall(VM_PROC_NR, VM_SHM_UNMAP, &m);
}

4
servers/vm/mmap.c
View file

@ -498,7 +498,7 @@ int do_munmap(message *m)
if(m->m_type == VM_UNMAP_PHYS) {
target = m->VMUP_EP;
} else if(m->m_type == VM_SHM_UNMAP) {
target = m->VMUN_ENDPT;
target = m->m_lc_vm_shm_unmap.forwhom;
}
if(target == SELF)
@ -513,7 +513,7 @@ int do_munmap(message *m)
if(m->m_type == VM_UNMAP_PHYS) {
addr = (vir_bytes) m->VMUP_VADDR;
} else if(m->m_type == VM_SHM_UNMAP) {
addr = (vir_bytes) m->VMUN_ADDR;
addr = (vir_bytes) m->m_lc_vm_shm_unmap.addr;
} else addr = (vir_bytes) m->VMUM_ADDR;
if(addr % VM_PAGE_SIZE)