2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
125 lines
2.8 KiB
Groff
125 lines
2.8 KiB
Groff
.\" @(#)getnetpath.3n 1.26 93/05/07 SMI; from SVr4
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.\" $NetBSD: getnetpath.3,v 1.6 2003/04/16 13:34:43 wiz Exp $
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.\" Copyright 1989 AT&T
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.Dd April 22, 2000
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.Dt GETNETPATH 3
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.Os
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.Sh NAME
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.Nm getnetpath ,
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.Nm setnetpath ,
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.Nm endnetpath
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.Nd get /etc/netconfig entry corresponding to NETPATH component
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In netconfig.h
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.Ft struct netconfig *
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.Fn getnetpath "void *handlep"
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.Ft void *
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.Fn setnetpath "void"
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.Ft int
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.Fn endnetpath "void *handlep"
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.Sh DESCRIPTION
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The routines described in this page provide the application access to the system
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network configuration database,
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.Pa /etc/netconfig ,
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as it is
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.Dq filtered
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by the NETPATH
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environment variable (see
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.Xr environ 7 ) .
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See
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.Xr getnetconfig 3
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for other routines that also access the
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network configuration database directly.
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The NETPATH variable is a list of colon-separated network identifiers.
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.Pp
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.Fn getnetpath
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returns a pointer to the
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netconfig database entry corresponding to the first valid
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NETPATH component.
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The netconfig entry is formatted as a struct netconfig.
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On each subsequent call,
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.Fn getnetpath
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returns a pointer to the netconfig entry that corresponds to the next
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valid NETPATH component.
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.Fn getnetpath
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can thus be used to search the netconfig database for all networks
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included in the NETPATH variable.
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When NETPATH has been exhausted,
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.Fn getnetpath
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returns NULL.
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.Pp
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A call to
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.Fn setnetpath
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.Dq binds
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to or
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.Dq rewinds
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NETPATH.
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.Fn setnetpath
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must be called before the first call to
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.Fn getnetpath
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and may be called at any other time.
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It returns a handle that is used by
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.Fn getnetpath .
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.Pp
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.Fn getnetpath
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silently ignores invalid NETPATH
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components.
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A NETPATH component is invalid if there is no corresponding
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entry in the netconfig database.
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.Pp
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If the NETPATH variable is unset,
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.Fn getnetpath
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behaves as if NETPATH
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were set to the sequence of
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.Dq default
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or
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.Dq visible
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networks in the netconfig database, in the
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order in which they are listed.
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.\"This proviso holds also for this
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.\"whole manpage.
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.Pp
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.Fn endnetpath
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may be called to
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.Dq unbind
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from NETPATH
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when processing is complete, releasing resources for reuse.
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Programmers should be aware, however, that
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.Fn endnetpath
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frees all memory allocated by
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.Fn getnetpath
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for the struct netconfig data structure.
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.Sh RETURN VALUES
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.Fn setnetpath
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returns a handle that is used by
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.Fn getnetpath .
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In case of an error,
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.Fn setnetpath
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returns NULL.
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.Pp
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.Fn endnetpath
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returns 0 on success and -1 on failure
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(for example, if
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.Fn setnetpath
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was not called previously).
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.Fn nc_perror
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or
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.Fn nc_sperror
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can be used to print out the reason for failure.
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See
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.Xr getnetconfig 3 .
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.Pp
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When first called,
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.Fn getnetpath
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returns a pointer to the netconfig database entry corresponding to the first
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valid NETPATH component.
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When NETPATH has been exhausted,
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.Fn getnetpath
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returns NULL.
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.Sh SEE ALSO
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.Xr getnetconfig 3 ,
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.Xr netconfig 5 ,
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.Xr environ 7
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