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Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.\"
.\" Copyright 2000 Massachusetts Institute of Technology
.\"
.\" Permission to use, copy, modify, and distribute this software and
.\" its documentation for any purpose and without fee is hereby
.\" granted, provided that both the above copyright notice and this
.\" permission notice appear in all copies, that both the above
.\" copyright notice and this permission notice appear in all
.\" supporting documentation, and that the name of M.I.T. not be used
.\" in advertising or publicity pertaining to distribution of the
.\" software without specific, written prior permission. M.I.T. makes
.\" no representations about the suitability of this software for any
.\" purpose. It is provided "as is" without express or implied
.\" warranty.
.\"
.\" THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
.\" ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
.\" SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
.\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
.\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
.\" ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
.Dd September 18, 2002
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Dt GETCONF 1
.Os
.Sh NAME
.Nm getconf
.Nd retrieve standard configuration variables
.Sh SYNOPSIS
mdoc(7) police: use the new features of the Nm macro.
2000-11-20 19:21:22 +00:00
.Nm
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Op Fl v Ar environment
.Ar path_var
.Ar file
mdoc(7) police: use the new features of the Nm macro.
2000-11-20 19:21:22 +00:00
.Nm
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Op Fl v Ar environment
.Ar system_var
.Sh DESCRIPTION
The
mdoc(7) police: use the new features of the Nm macro.
2000-11-20 19:21:22 +00:00
.Nm
Destroy the evidence of my misunderstanding of the specification. Also fix up the phrasing in the man page a bit.
2001-02-21 19:31:53 +00:00
utility prints the value of a
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Tn POSIX
or
.Tn X/Open
Reword the description a little bit more for parallel construction.
2001-02-21 19:33:38 +00:00
path or system configuration variable to the standard output.
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
If the specified variable is undefined, the string
.Dq Li undefined
is output.
.Pp
The first form of the command, with two mandatory
Uniformly refer to a file system as "file system". Approved by: re
2002-12-12 17:26:04 +00:00
arguments, retrieves file- and file system-specific
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
configuration variables using
.Xr pathconf 2 .
The second form, with a single argument, retrieves system
configuration variables using
.Xr confstr 3
and
.Xr sysconf 3 ,
depending on the type of variable.
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
As an extension, the second form can also be used to query static limits from
.Aq Pa limits.h .
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Pp
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
All
.Xr sysconf 3
and
.Xr pathconf 2
variables use the same name as the manifest constants defined in
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
the relevant standard C-language bindings, including any leading
underscore or prefix.
That is to say,
.Ar system_var
might be
.Dv ARG_MAX
or
.Dv _POSIX_VERSION ,
as opposed to the
.Xr sysconf 3
names
.Dv _SC_ARG_MAX
or
.Dv _SC_POSIX_VERSION .
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
Variables retrieved from
.Xr confstr 3
have the leading
.Ql _CS_
stripped off; thus,
.Dv _CS_PATH
is queried by a
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Ar system_var
of
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
.Dq Li PATH .
.Ss Programming Environments
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
The
.Fl v Ar environment
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
option specifies a
.St -p1003.1-2001
programming environment under which the values are to be queried.
This option currently does nothing, but may in the future be used
to select between 32-bit and 64-bit execution environments on platforms
which support both.
Specifying an environment which is not supported on the current execution
platform gives undefined results.
.Pp
The standard programming environments are as follows:
.Bl -tag -width ".Li POSIX_V6_LPBIG_OFFBIG" -offset indent
.It Li POSIX_V6_ILP32_OFF32
Exactly 32-bit integer, long, pointer, and file offset.
.Sy Supported platforms :
None.
.It Li POSIX_V6_ILP32_OFFBIG
Exactly 32-bit integer, long, and pointer; at least 64-bit file offset.
.Sy Supported platforms :
.Tn IA32 ,
.Tn PowerPC .
.It Li POSIX_V6_LP64_OFF64
Exactly 32-bit integer; exactly 64-bit long, pointer, and file offset.
.Sy Supported platforms :
.Tn Alpha ,
.Tn SPARC64 .
.It Li POSIX_V6_LPBIG_OFFBIG
At least 32-bit integer; at least 64-bit long, pointer, and file offset.
.Sy Supported platforms :
None.
.El
.Pp
The command:
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
.Pp
.Dl "getconf POSIX_V6_WIDTH_RESTRICTED_ENVS"
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
.Pp
returns a newline-separated list of environments in which the width
of certain fundamental types is no greater than the width of the native
C type
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
.Vt long .
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
At present, all programming environments supported by
.Fx
have this property.
Several of the
.Xr confstr 3
variables provide information on the necessary compiler and linker flags
to use the standard programming environments described above.
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Sh DIAGNOSTICS
mdoc(7) police: utilize the new .Ex macro.
2001-08-15 09:09:47 +00:00
.Ex -std
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
Use of a
.Ar system_var
or
.Ar path_var
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
which is completely unrecognized is considered an error,
causing a diagnostic message to be written to standard error.
One
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
which is known but merely undefined does not result in an error
indication.
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
The
.Nm
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
utility recognizes all of the variables defined for
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
.St -p1003.1-2001 ,
including those which are not currently implemented.
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Sh EXAMPLES
The command:
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
.Pp
.Dl "getconf PATH"
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Pp
will display the system default setting for the
.Ev PATH
environment variable.
.Pp
The command:
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
.Pp
.Dl "getconf NAME_MAX /tmp"
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Pp
will display the maximum length of a filename in the
.Pa /tmp
directory.
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
.Pp
The command:
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
.Pp
.Dl "getconf -v POSIX_V6_LPBIG_OFFBIG LONG_MAX"
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
.Pp
will display the maximum value of the C type
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
.Vt long
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
in the
.Li POSIX_V6_LPBIG_OFFBIG
programming environment,
if the system supports that environment.
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Sh SEE ALSO
.Xr pathconf 2 ,
mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2).
2001-07-06 16:46:48 +00:00
.Xr confstr 3 ,
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Xr sysconf 3
.Sh STANDARDS
The
mdoc(7) police: use the new features of the Nm macro.
2000-11-20 19:21:22 +00:00
.Nm
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
utility is expected to be compliant with
Completely revamp the way getconf(1) works, for better adherence to the intent of the Standard. - Make getconf able to distinguish between configuration variables which are entirely unknown and those which are merely not defined in the compilation environment. The latter now get a more appropriate "undefined\n" result rather than a diagnostic. This may not be exactly right, but it's closer to the intent of the Standard than the previous behavior. - Support ``programming environments'' by validating that the environment requested with the `-v' flag is the one-and-only execution environment. (If more environments are supported for some platforms in the future, multiple getconf(1) executables will be required, but a simple edit in progenv.gperf will enable automatic support for it.) Document POSIX standard programming environments. - Add all of the 1003.1-2001 configuration variables. FreeBSD does not support all of these (including some that are mandatory); getconf will later be fixed to break the world should a required variable not be defined. As a result of all these changes, gperf is no longer adequate. Keep the overall format and names of the files for now, to preserve revision history. Use an awk script to process the .gperf files into C source, which does a few things that gperf, as a more general tool, cannot do. The keyword recognition function is no longer a perfect hash function. This may obviate the need for gperf in the source tree. - Add a small compile-time regression test to break the build if any of the .gperf files declare conflicting token sets. (gperf itself would have done this for the simple case of duplicate tokens in the same input file.)
2002-09-19 03:39:03 +00:00
.St -p1003.1-2001 .
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Sh HISTORY
The
mdoc(7) police: use the new features of the Nm macro.
2000-11-20 19:21:22 +00:00
.Nm
mdoc(7) police: markup nits, "The .Nm utility". Approved by: re
2002-11-26 11:17:22 +00:00
utility first appeared in
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.Fx 5.0 .
mdoc(7) police: use certified section headers wherever possible.
2000-11-17 11:44:16 +00:00
.Sh AUTHORS
Hello, getconf. This is a slight reinvention of the wheel^H^H^H^H^HPOSIX.2 and X/Open utility, and rather more complicated than necessary.
2000-04-26 02:36:54 +00:00
.An Garrett A. Wollman Aq wollman@lcs.mit.edu
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