08-09-2013
Quote:
Originally Posted by
samrat dutta
Also need some details of how it does . What does $0 do and /\?
If you look at your AWK man page or search for AWK tutorials online, you'll quickly find the answer to you $0 question.
/ is a regular expression delimiter and \ is used to escape the character that follows it. If you are not familiar with regular expressions, you need to set aside some time for study.
Regards,
Alister
This User Gave Thanks to alister For This Post:
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LEARN ABOUT OPENSOLARIS
usb_pipe_get_private
usb_pipe_set_private(9F) Kernel Functions for Drivers usb_pipe_set_private(9F)
NAME
usb_pipe_set_private, usb_pipe_get_private - USB user-defined pipe data-field facility
SYNOPSIS
#include <sys/usb/usba.h>
int usb_pipe_set_private(usb_pipe_handle_t pipe_handle, usb_opaque_t data);
usb_opaque_t usb_pipe_get_private (usb_pipe_handle_t pipe_handle);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI)
PARAMETERS
For usb_pipe_set_private():
pipe_handle Pipe handle into which user-defined data is placed.
data Data to store in the pipe handle.
For usb_pipe_get_private():
pipe_handle Pipe handle from which user-defined data is retrieved.
DESCRIPTION
The usb_set_driver_private() function initializes the user-private data field of the pipe referred to by pipe_handle, using data. The
user-private data field is used to store any data the client desires and is not used in any way by the USBA or OS framework. Client driv-
ers often store their soft-state here for convenient retrieval by their callback handlers.
The usb_get_driver_private() function retrieves the user-private data stored via usb_set_driver_private(), from the pipe referred to by
pipe_handle.
RETURN VALUES
For usb_pipe_set_private():
USB_SUCCESS Private data has been successfully stored in pipe handle.
USB_INVALID_PIPE pipe_handle argument is NULL or invalid.
Pipe is closing or closed.
USB_INVALID_PERM The pipe_handle argument refers to the default control pipe.
For usb_pipe_get_private():
On success: usb_opaque_t pointer to data being retrieved.
On failure: NULL. Fails if pipe handle is NULL or invalid. Fails if pipe handle is to a pipe which is closing or closed.
CONTEXT
May be called from user, kernel or interrupt context.
EXAMPLES
usb_pipe_handle_t pipe;
/* Some driver defined datatype. */
xxx_data_t *data = kmem_zalloc(...);
usb_pipe_set_private(pipe, data);
----
xxx_data_t *xxx_data_ptr = (xxx_data_t *)usb_pipe_get_private(pipe);
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Architecture |PCI-based systems |
+-----------------------------+-----------------------------+
|Interface stability |Committed |
+-----------------------------+-----------------------------+
|Availability |SUNWusb |
+-----------------------------+-----------------------------+
SEE ALSO
attributes(5), usb_pipe_open(9F), usb_alloc_request(9F)
SunOS 5.11 5 Jan 2004 usb_pipe_set_private(9F)