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custom message type for VM_GETREF

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Ben Gras 2014-07-26 13:53:46 +02:00 committed by Lionel Sambuc
parent 28b5360df7
commit 01a50f57d8
4 changed files with 15 additions and 9 deletions
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3
include/minix/com.h
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@ -760,9 +760,6 @@
#define VM_GETPHYS (VM_RQ_BASE+35)
#define VM_GETREF (VM_RQ_BASE+36)
# define VMREFCNT_ENDPT m2_i1
# define VMREFCNT_ADDR m2_l1
# define VMREFCNT_RETC m2_i2
#define VM_RS_SET_PRIV (VM_RQ_BASE+37)
# define VM_RS_NR m2_i1

9
include/minix/ipc.h
View file

@ -1726,6 +1726,14 @@ typedef struct {
} mess_lc_vm_getphys;
_ASSERT_MSG_SIZE(mess_lc_vm_getphys);
typedef struct {
endpoint_t endpt;
void *addr;
int retc;
uint8_t padding[44];
} mess_lsys_vm_getref;
_ASSERT_MSG_SIZE(mess_lsys_vm_getref);
typedef struct {
endpoint_t m_source; /* who sent the message */
int m_type; /* what kind of message is it */
@ -1945,6 +1953,7 @@ typedef struct {
mess_vfs_lc_lseek m_vfs_lc_lseek;
mess_lsys_vm_vmremap m_lsys_vm_vmremap;
mess_lsys_vm_getref m_lsys_vm_getref;
mess_lc_vm_getphys m_lc_vm_getphys;
mess_lc_vm_shm_unmap m_lc_vm_shm_unmap;

6
lib/libc/sys-minix/mmap.c
View file

@ -161,12 +161,12 @@ u8_t vm_getrefcount(endpoint_t endpt, void *addr)
int r;
memset(&m, 0, sizeof(m));
m.VMREFCNT_ENDPT = endpt;
m.VMREFCNT_ADDR = (long) addr;
m.m_lsys_vm_getref.endpt = endpt;
m.m_lsys_vm_getref.addr = addr;
r = _syscall(VM_PROC_NR, VM_GETREF, &m);
if (r != OK)
return (u8_t) -1;
return (u8_t) m.VMREFCNT_RETC;
return (u8_t) m.m_lsys_vm_getref.retc;
}

6
servers/vm/mmap.c
View file

@ -471,8 +471,8 @@ int do_get_refcount(message *m)
u8_t cnt;
vir_bytes addr;
target = m->VMREFCNT_ENDPT;
addr = m->VMREFCNT_ADDR;
target = m->m_lsys_vm_getref.endpt;
addr = (vir_bytes) m->m_lsys_vm_getref.addr;
if ((r = vm_isokendpt(target, &n)) != OK)
return EINVAL;
@ -481,7 +481,7 @@ int do_get_refcount(message *m)
r = map_get_ref(vmp, addr, &cnt);
m->VMREFCNT_RETC = cnt;
m->m_lsys_vm_getref.retc = cnt;
return r;
}