[PATCH 10/16] libtrivfs: register libtrivfs-based translators as important
Register libtrivfs-based translators running as root as important
processes at the proc server.
* libtrivfs/startup.c (trivfs_startup): Mark us as important.
---
libtrivfs/startup.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/libtrivfs/startup.c b/libtrivfs/startup.c
index 86b0f82..e7be67a 100644
--- a/libtrivfs/startup.c
+++ b/libtrivfs/startup.c
@@ -65,5 +65,24 @@ trivfs_startup(mach_port_t bootstrap, int flags,
if (!err && control)
*control = fsys;
+ /* Mark us as important. */
+ if (! err)
+ {
+ mach_port_t proc = getproc ();
+ if (proc == MACH_PORT_NULL)
+ /* /hurd/exec uses libtrivfs. We have no handle to the proc
+ server in /hurd/exec when it does its handshake with the
+ root filesystem, so fail graciously here. */
+ return 0;
+
+ err = proc_mark_important (proc);
+ /* This might fail due to permissions, ignore any such
+ errors. */
+ if (err == EPERM)
+ err = 0;
+
+ mach_port_deallocate (mach_task_self (), proc);
+ }
+
return err;
}
--
1.7.10.4
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