di_devlink_walk(3DEVINFO) Device Information Library Functions di_devlink_walk(3DEVINFO)
NAME
di_devlink_walk - walk through links in a devlink snapshot
SYNOPSIS
cc [ flag... ] file... -ldevinfo [ library... ]
#include <libdevinfo.h>
int di_devlink_walk(di_devlink_handle_t hdl,const char *re,
const char *mpath, uint_t flags, void *arg,
int (*devlink_callback)(di_devlink_t devlink, void *arg));
PARAMETERS
hdl A handle to a snapshot of devlinks in "/dev".
re An extended regular expression as specified in regex(5) describing the paths of devlinks to visit. A null value matches all
devlinks. The expression should not involve the "/dev" prefix. For example, the "^dsk/" will invoke devlink_callback() for all
"/dev/dsk/" links.
mpath A path to a minor node below "/devices" for which "/dev" links are to be looked up. A null value selects all devlinks. This
path should not have a "/devices" prefix.
flags Specify the type of devlinks to be selected. If DI_PRIMARY_LINK is used, only primary links (for instance, links which point
only to "/devices" entries) are selected. If DI_SECONDARY_LINK is specified, only secondary links (for instance, devlinks which
point to other devlinks) are selected. If neither flag is specified, all devlinks are selected.
arg A pointer to caller private data.
devlink The devlink being visited.
DESCRIPTION
The di_devlink_walk() function visits every link in the snapshot that meets the criteria specified by the caller. For each such devlink,
the caller-supplied function devlink_callback() is invoked. The return value of devlink_callback() determines subsequent walk behavior.
RETURN VALUES
Upon success, the di_devlink_walk() function returns 0. Otherwise, -1 is returned and errno is set to indicate the error.
The devlink_callback() function can return the following values:
DI_WALK_CONTINUE Continue walking.
DI_WALK_TERMINATE Terminate the walk immediately.
ERRORS
The devlink_callback() function will fail if:
EINVAL One or more arguments is invalid.
ENOMEM Insufficient memory is available.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
di_devlink_init(3DEVINFO), di_devlink_path(3DEVINFO), libdevinfo(3LIB), malloc(3C), attributes(5), regex(5)
SunOS 5.11 15 May 2008 di_devlink_walk(3DEVINFO)