Changeset 368ee04 in mainline for uspace/lib/c/generic/io/logctl.c

Timestamp:

2017-04-05T18:10:39Z (7 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

93ad8166

Parents:

39f892a9 (diff), 2166728 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge from lp:~jakub/helenos/vfs-2.5-cherrypick

This merge cherry-picks some of the changesets from Jiri Zarevucky's:

lp:~zarevucky-jiri/helenos/vfs-2.5

and then continues independently, yet sometime in a similar vein.

Roughly speaking, Jiri's branch is merged entirely up to its revision
1926 and then cherry-picked on and off until its revision 1965. Among
these changes are:

• relativization of the API,
• client-side roots,
• server-side mounts,
• inbox for passing arbitrary files from parent to child,
• some streamlining and cleanup.

Additional changes include:

• addressing issues introduced by the above changes,
• client-side I/O cursors (file positions),
• all HelenOS file system APIs begin with the vfs_ prefix and can be used after including vfs/vfs.h,
• removal of some POSIX-ish headers and definitions,
• additional cleanup.

File:

• uspace/lib/c/generic/io/logctl.c (modified) (2 diffs)

uspace/lib/c/generic/io/logctl.c

@@ -39 +39 @@
 #include <ns.h>
 #include <str.h>
+#include <vfs/vfs.h>
 
 /** IPC session with the logger service. */
@@ -122 +123 @@
 }
 
+/** Set logger's VFS root.
+ *
+ * @return Error code or EOK on success.
+ */
+int logctl_set_root(void)
+{
+        async_exch_t *exchange = NULL;
+        int rc = start_logger_exchange(&exchange);
+        if (rc != EOK)
+                return rc;
+
+        aid_t reg_msg = async_send_0(exchange, LOGGER_CONTROL_SET_ROOT, NULL);
+        async_exch_t *vfs_exch = vfs_exchange_begin();
+        rc = vfs_pass_handle(vfs_exch, vfs_root(), exchange);
+        vfs_exchange_end(vfs_exch);
+        sysarg_t reg_msg_rc;
+        async_wait_for(reg_msg, &reg_msg_rc);
+
+        async_exchange_end(exchange);
+
+        if (rc != EOK)
+                return rc;
+
+        return (int) reg_msg_rc;
+}
+
 /** @}
  */