util: make virCommandSetSendBuffer testable

Add a private function to peek at the list of send buffers in virCommand
so that it is testable

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

src/libvirt_private.syms

@@ -2119,6 +2119,7 @@ virCommandNewArgs;
 virCommandNewVAList;
 virCommandNonblockingFDs;
 virCommandPassFD;
+virCommandPeekSendBuffers;
 virCommandRawStatus;
 virCommandRequireHandshake;
 virCommandRun;

src/util/vircommand.c

@@ -78,14 +78,6 @@ struct _virCommandFD {
     unsigned int flags;
 };
 
-typedef struct _virCommandSendBuffer virCommandSendBuffer;
-struct _virCommandSendBuffer {
-    int fd;
-    unsigned char *buffer;
-    size_t buflen;
-    off_t offset;
-};
-
 struct _virCommand {
     int has_error; /* 0 on success, -1 on error  */
 
@@ -3514,3 +3506,12 @@ virCommandSetRunAmong(virCommand *cmd,
 
     cmd->schedCore = pid;
 }
+
+void
+virCommandPeekSendBuffers(virCommand *cmd,
+                          virCommandSendBuffer **buffers,
+                          int *nbuffers)
+{
+    *buffers = cmd->sendBuffers;
+    *nbuffers = cmd->numSendBuffers;
+}

src/util/vircommand.h

@@ -24,6 +24,14 @@
 #include "internal.h"
 #include "virbuffer.h"
 
+typedef struct _virCommandSendBuffer virCommandSendBuffer;
+struct _virCommandSendBuffer {
+    int fd;
+    unsigned char *buffer;
+    size_t buflen;
+    off_t offset;
+};
+
 typedef struct _virCommand virCommand;
 
 /* This will execute in the context of the first child

src/util/vircommandpriv.h

@@ -47,3 +47,7 @@ void virCommandSetDryRun(virCommandDryRunToken *tok,
                          bool bufCommandStripPath,
                          virCommandDryRunCallback cb,
                          void *opaque);
+
+void virCommandPeekSendBuffers(virCommand *cmd,
+                               virCommandSendBuffer **buffers,
+                               int *nbuffers);