Ensure that the fasttrap device file can be opened.

The DTrace utility tries to open the fasttrap provider device file when USDT
probes are being used, and due to the open function returning -EAGAIN, the
DTrace utility would report that the pid provider is unavailable because the
resource is temporarily unavailable.  The function now correctly returns 0.

Signed-off-by: Kris Van Hees <kris.van.hees@oracle.com>

diff --git a/dtrace/fasttrap_dev.c b/dtrace/fasttrap_dev.c
index 545fc37a1e1290f18bd56b2efc3b41ad96f04b72..2eac2270cdb05097269bde937abe661a293af2da 100644 (file)
--- a/dtrace/fasttrap_dev.c
+++ b/dtrace/fasttrap_dev.c
@@ -1420,7 +1420,7 @@ static long fasttrap_ioctl(struct file *file,
 
 static int fasttrap_open(struct inode *inode, struct file *file)
 {
-       return -EAGAIN;
+       return 0;
 }
 
 static int fasttrap_close(struct inode *inode, struct file *file)