Changeset 7171760 in mainline for uspace/lib/c/generic/loader.c

Timestamp:

2011-08-18T12:05:00Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b33ec43

Parents:

866e627

Message:

Rework the way how open files are passed from parent task to child.

• Instead of passing fdi_node_t's, pass handles directly using the IPC_M_STATE_CHANGE_AUTHORIZE mechanism.
• Remove open_node(), fd_node(), fdi_node_t.
• Replace fopen_node() with fopen_handle().
• Replace fnode() with fhandle().
• The child task does not synchronize with VFS yet.

File:

• uspace/lib/c/generic/loader.c (modified) (1 diff)

uspace/lib/c/generic/loader.c

@@ -256 +256 @@
  *
  */
-int loader_set_files(loader_t *ldr, fdi_node_t *const files[])
-{
-        /*
-         * Serialize the arguments into a single array. First
-         * compute size of the buffer needed.
-         */
-        fdi_node_t *const *ap = files;
-        size_t count = 0;
-        while (*ap != NULL) {
-                count++;
-                ap++;
-        }
-        
-        fdi_node_t *files_buf;
-        files_buf = (fdi_node_t *) malloc(count * sizeof(fdi_node_t));
-        if (files_buf == NULL)
-                return ENOMEM;
-        
-        /* Fill the buffer */
-        size_t i;
-        for (i = 0; i < count; i++)
-                files_buf[i] = *files[i];
-        
+int loader_set_files(loader_t *ldr, int * const files[])
+{
         /* Send serialized files to the loader */
         async_exch_t *exch = async_exchange_begin(ldr->sess);
-        
-        ipc_call_t answer;
-        aid_t req = async_send_0(exch, LOADER_SET_FILES, &answer);
-        sysarg_t rc = async_data_write_start(exch, (void *) files_buf,
-            count * sizeof(fdi_node_t));
-        
-        async_exchange_end(exch);
-        free(files_buf);
-        
+        async_exch_t *vfs_exch = vfs_exchange_begin();
+        
+        int i;
+        for (i = 0; files[i]; i++)
+                ;
+
+        ipc_call_t answer;
+        aid_t req = async_send_1(exch, LOADER_SET_FILES, i, &answer);
+
+        sysarg_t rc;
+        
+        for (i = 0; files[i]; i++) {
+                rc = async_state_change_start(exch, VFS_PASS_HANDLE, *files[i],
+                    0, vfs_exch); 
+                if (rc != EOK)
+                        break;
+        }
+        
+        vfs_exchange_end(vfs_exch);
+        async_exchange_end(exch);
+
         if (rc != EOK) {
                 async_wait_for(req, NULL);