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authormidipix <writeonce@midipix.org>2018-03-08 11:03:49 +0000
committermidipix <writeonce@midipix.org>2018-03-14 19:09:59 -0400
commitf2dbb3b12560709a450d8422bcecda63b5b96e31 (patch)
tree7bbed9a200d0a9c4f65b327e2e7c62a49372e52e /src/msq
parent31d7ced24c5a8454dc6e5ad74ab6a4d0e3fc7549 (diff)
downloadntapi-f2dbb3b12560709a450d8422bcecda63b5b96e31.tar.bz2
ntapi-f2dbb3b12560709a450d8422bcecda63b5b96e31.tar.xz
__ntapi_msq_recv(): unmap the ad-hoc section as needed.
Diffstat (limited to 'src/msq')
-rw-r--r--src/msq/ntapi_msq_recv.c25
1 files changed, 20 insertions, 5 deletions
diff --git a/src/msq/ntapi_msq_recv.c b/src/msq/ntapi_msq_recv.c
index 4da7cbe..8c4a4b0 100644
--- a/src/msq/ntapi_msq_recv.c
+++ b/src/msq/ntapi_msq_recv.c
@@ -15,10 +15,18 @@
#include "ntapi_impl.h"
static int32_t __msq_recv_return(
+ void * mapaddr,
intptr_t * hlock,
int32_t status)
{
- at_store(hlock,0);
+ if (hlock)
+ at_store(hlock,0);
+
+ if (mapaddr)
+ __ntapi->zw_unmap_view_of_section(
+ NT_CURRENT_PROCESS_HANDLE,
+ mapaddr);
+
return status;
}
@@ -35,6 +43,7 @@ int32_t __stdcall __ntapi_msq_recv(
__out nt_io_status_block * iosb)
{
int32_t status;
+ void * mapaddr;
void * hsection;
void * secaddr;
size_t secsize;
@@ -53,12 +62,16 @@ int32_t __stdcall __ntapi_msq_recv(
hsection = msq->section;
secaddr = msq->section_addr;
secsize = msq->section_size;
+ mapaddr = 0;
} else if ((status = __ntapi->ipc_init_section_by_port(
msq->hport,&hsection,
&secaddr,&secsize)))
return status;
+ else
+ mapaddr = secaddr;
+
/* len */
if (len > secsize)
len = secsize;
@@ -67,7 +80,9 @@ int32_t __stdcall __ntapi_msq_recv(
hlock = &(__ntapi_internals()->hlock);
if (at_locked_cas(hlock,0,1))
- return NT_STATUS_RESOURCE_NOT_OWNED;
+ return __msq_recv_return(
+ mapaddr,0,
+ NT_STATUS_RESOURCE_NOT_OWNED);
/* msg */
__ntapi->tt_aligned_block_memset(
@@ -92,9 +107,9 @@ int32_t __stdcall __ntapi_msq_recv(
msg.data.msqinfo.riosb = iosb;
if ((status = __ntapi->zw_request_wait_reply_port(msq->hport,&msg,&msg)))
- return __msq_recv_return(hlock,status);
+ return __msq_recv_return(mapaddr,hlock,status);
else if (msg.data.ttyinfo.status)
- return __msq_recv_return(hlock,msg.data.ttyinfo.status);
+ return __msq_recv_return(mapaddr,hlock,msg.data.ttyinfo.status);
/* msq data section to buffer */
__ntapi->tt_generic_memcpy(
@@ -105,5 +120,5 @@ int32_t __stdcall __ntapi_msq_recv(
iosb->status = msg.data.msqinfo.ntiosb.status;
iosb->info = msg.data.msqinfo.ntiosb.info;
- return __msq_recv_return(hlock,NT_STATUS_SUCCESS);
+ return __msq_recv_return(mapaddr,hlock,NT_STATUS_SUCCESS);
}