Changeset 683 for trunk/kernel/syscalls/sys_pipe.c

Timestamp:

Jan 13, 2021, 12:36:17 AM (4 years ago)

Author:

alain

Message:

All modifications required to support the <tcp_chat> application
including error recovery in case of packet loss.A

File:

• trunk/kernel/syscalls/sys_pipe.c (modified) (5 diffs)

trunk/kernel/syscalls/sys_pipe.c

@@ -36 +36 @@
 {
     vseg_t       * vseg;
-    kmem_req_t     req;
     pipe_t       * pipe;
     vfs_file_t   * file_0;
@@ -88 +87 @@
     // 2. allocate memory for fd[0] file descriptor in local cluster
     // we don't use the vfs_file_create function because there is no inode.
-        req.type  = KMEM_KCM;
-        req.order = bits_log2( sizeof(vfs_file_t) );
-    req.flags = AF_ZERO;
-        file_0    = kmem_alloc( &req );
+        file_0 = kmem_alloc( bits_log2(sizeof(vfs_file_t)) , AF_ZERO );
 
     if( file_0 == NULL ) 
@@ -120 +116 @@
 
     // 4. allocate memory for fd[1] file descriptor in local cluster
-        req.type  = KMEM_KCM;
-        req.order = bits_log2( sizeof(vfs_file_t) );
-    req.flags = AF_ZERO;
-        file_1    = kmem_alloc( &req );
+    // we don't use the vfs_file_create function because there is no inode.
+        file_1 = kmem_alloc( bits_log2(sizeof(vfs_file_t)) , AF_ZERO );
 
     if( file_1 == NULL ) 
@@ -178 +172 @@
 error_5:    // release memory allocated for fd[1] file descriptor
 
-    req.ptr = file_1;
-    kmem_free( &req );
+    kmem_free( file_1 , bits_log2(sizeof(vfs_file_t)) );
 
 error_4:    // release fdid_0 from fd_array[]
@@ -187 +180 @@
 error_3:    // release memory allocated for fd[0] file descriptor
 
-    req.ptr = file_0;
-    kmem_free( &req );
+    kmem_free( file_0 , bits_log2(sizeof(vfs_file_t)) );
 
 error_2:    // release memory allocated for the pipe