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getnetpath(3c)
Standard C Library Functions getnetpath(3C)
NAME
getnetpath, setnetpath, endnetpath - get /etc/netconfig entry corre‐
sponding to NETPATH component
SYNOPSIS
#include <netconfig.h>
struct netconfig *getnetpath(void *handlep);
void *setnetpath(void);
int endnetpath(void *handlep);
DESCRIPTION
The routines described on this page are part of the Network Selection
component. They provide the application access to the system network
configuration database, /etc/netconfig, as it is "filtered" by the NET‐
PATH environment variable. See environ(7). See getnetconfig(3C) for
other routines that also access the network configuration database
directly. The NETPATH variable is a list of colon-separated network
identifiers.
getnetpath() returns a pointer to the netconfig database entry corre‐
sponding to the first valid NETPATH component. The netconfig entry is
formatted as a struct netconfig. On each subsequent call, getnetpath()
returns a pointer to the netconfig entry that corresponds to the next
valid NETPATH component. getnetpath() can thus be used to search the
netconfig database for all networks included in the NETPATH variable.
When NETPATH has been exhausted, getnetpath() returns NULL.
A call to setnetpath() "binds" to or "rewinds" NETPATH. setnetpath()
must be called before the first call to getnetpath() and may be called
at any other time. It returns a handle to be used as the handlep argu‐
ment to getnetpath(), and which is freed by passing it as the handlep
argument to endnetpath().
getnetpath() silently ignores invalid NETPATH components. A NETPATH
component is invalid if there is no corresponding entry in the netcon‐
fig database.
If the NETPATH variable is unset, getnetpath() behaves as if NETPATH
were set to the sequence of "default" or "visible" networks in the net‐
config database, in the order in which they are listed.
endnetpath() may be called to "unbind" from NETPATH when processing is
complete, releasing resources for reuse. Programmers should be aware,
however, that endnetpath() frees all memory allocated by getnetpath()
for the struct netconfig data structure. endnetpath() returns 0 on suc‐
cess and -1 on failure (for example, if setnetpath() was not called
previously).
RETURN VALUES
setnetpath() returns a handle that is used by getnetpath(). In case of
an error, setnetpath() returns NULL. nc_perror() or nc_sperror() can be
used to print out the reason for failure. See getnetconfig(3C).
When first called, getnetpath() returns a pointer to the netconfig
database entry corresponding to the first valid NETPATH component. When
NETPATH has been exhausted, getnetpath() returns NULL.
endnetpath() returns 0 on success and -1 on failure (for example, if
setnetpath() was not called previously).
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelMT-Safe
SEE ALSO
getnetconfig(3C), netconfig(5), attributes(7), environ(7)
HISTORY
These functions have been present since the initial release of Solaris.
Oracle Solaris 11.4 2 Feb 2021 getnetpath(3C)