Lvcreate snapshot - ignore files

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di_devlink_fini

di_devlink_init(3DEVINFO)			       Device Information Library Functions				 di_devlink_init(3DEVINFO)

NAME

       di_devlink_init, di_devlink_fini - create and destroy a snapshot of devlinks

SYNOPSIS

       cc [ flag... ] file... -ldevinfo [ library... ]
       #include <libdevinfo.h>

       di_devlink_handle_t di_devlink_init(const char *name,
	    uint_t flags);

       int di_devlink_fini(di_devlink_handle_t *hdlp);

PARAMETERS

       flags	The following values are supported:

		DI_MAKE_LINK	Synchronize with devlink management before taking the snapshot. The name argument determines which devlink manage-
				ment activities must complete before taking a devlink snapshot. Appropriate privileges are required  to  use  this
				flag.

       name	If flags is DI_MAKE_LINK, name determines which devlink management activity must complete prior to snapshot.

		    o	   If name is NULL then all devlink management activities must complete. The devlink snapshot returned accurately reflects
			   the entire kernel device tree.

		    o	   If name is a driver name, devlink management activities associated with nodes bound to that driver must complete.

		    o	   If name is a path to a node in the kernel device tree (no "/devices" prefix), devlink management activities below  node
			   must complete.

		    o	   If  name  is  a  path to a minor node in the kernel device tree (no "/devices"prefix), devlink management activities on
			   that minor node must complete.

       hdlp	The handle to the snapshot obtained by calling di_devlink_init().

DESCRIPTION

       System management applications often need to map a "/devices" path to a minor node to a public "/dev" device name. The di_devlink_*() func-
       tions provide an efficient way to accomplish this.

       The di_devlink_init() function takes a snapshot of devlinks and returns a handle to this snapshot.

       The di_devlink_fini() function destroys the devlink snapshot and frees the associated memory.

RETURN VALUES

       Upon  successful  completion, di_devlink_init() returns a handle to a devlink snapshot. Otherwise, DI_LINK_NIL is returned and errno is set
       to indicate the error.

       Upon successful completion, di_devlink_fini() returns 0. Otherwise, -1 is returned and errno is set to indicate the error.

ERRORS

       The di_devlink_init() function will fail if:

       EINVAL	 One or more arguments is invalid.

       The di_devlink_init() function with DI_MAKE_LINK can also fail if:

       EPERM	The user does no have appropriate privileges.

       The di_devlink_init() function can set errno to any error value that can also be set by malloc(3C), open(2), ioctl(2), or mmap(2).

ATTRIBUTES

       See attributes(5)  for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ioctl(2), mmap(2), open(2), di_devlink_path(3DEVINFO), di_devlink_walk(3DEVINFO), libdevinfo(3LIB), malloc(3C), attributes(5)

SunOS 5.11							    21 Jul 2008 					 di_devlink_init(3DEVINFO)

Red Hat