+++ /dev/null
-.\" (C) Copyright 2016 Craig Small <csmall@enc.com.au>
-.\"
-.\" %%%LICENSE_START(LGPL_2.1+)
-.\" This manual is free software; you can redistribute it and/or
-.\" modify it under the terms of the GNU Lesser General Public
-.\" License as published by the Free Software Foundation; either
-.\" version 2.1 of the License, or (at your option) any later version.
-.\"
-.\" This manual is distributed in the hope that it will be useful,
-.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
-.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-.\" Lesser General Public License for more details.
-.\"
-.\" You should have received a copy of the GNU Lesser General Public
-.\" License along with this library; if not, write to the Free Software
-.\" Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-.\" %%%LICENSE_END
-.\"
-.TH PROCPS_LINUX_VERSION 3 2016-05-01 "libproc-2"
-.\" Please adjust this date whenever revising the manpage.
-.\"
-.SH NAME
-procps_linux_version \-
-provide current version of Linux as an integer
-.SH SYNOPSIS
-.B #include <proc/procps.h>
-.sp
-.B int procps_linux_version(void);
-.sp
-Link with \fI\-lprocps\fP.
-.SH DESCRIPTION
-The function
-.BR procps_linux_version ()
-returns the current Linux version as an integer. On non-Linux systems that
-have an emulated proc filesystem this function returns the version of the
-Linux emulation instead.
-The Linux version consists of a triple of positive integers representing
-the major, minor and patch versions of the kernel.
-.PP
-The library provides 3 macros for separating out the components.
-.RS 4
-.TP 1.2i
-.BR LINUX_VERSION_MAJOR (ver)
-Extract the major component from the given version integer.
-.TP
-.BR LINUX_VERSION_MINOR (ver)
-Extract the minor component from the given version integer.
-.TP
-.BR LINUX_VERSION_PATCH (ver)
-Extract the patch component from the given version integer.
-.RE
-.PP
-To encode a given Linux version, such as using it to compare against the current
-version, use the following macro:
-.TP
-.BI LINUX_VERSION( major , minor , patch )
-
-.SH RETURN VALUE
-The
-.BR procps_linux_version ()
-returns a positive integer encoding the Linux version if successful. Otherwise
-returns a negative integer to one of the values defined below.
-.TP
-.B -EIO
-The procps library was unable to read the osrelease file.
-.TP
-.B -ERANGE
-Unable to parse the osrelease file.
-.PP
-.BR procps_linux_version ()
-may also return any (negated) value that \fBfopen\fR() may set errno to.
-
-.SH FILES
-.TP
-.I /proc/sys/kernel/osrelease
-Contains the release version of the Linux kernel or proc filesystem.
-
-.SH VERSIONS
-.B procps_linux_version()
-first appeared in libproc-2 version 0.0.
-
-.SH BUGS
-Due to the way the three numbers are encoded into a single integer,
-.BR procps_linux_version ()
-and the associated macros assume 255 for the maximum value for the
-minor and patch level and 32767 (hex 0x7fff) for the maximum value
-for the major version. In other words, when Linux v 32768.0.0 comes
-out, this function will break.
-.\" Maj/6yr - In 7452 we'll think of something
-
-.SH SEE ALSO
-.BR fopen (3),
-.BR proc (5).
.B long procps_hertz_get(void);
.BI "int procps_loadavg(double * " av1 ", double * " av5 ", double * " av15 ");"
.B unsigned int procps_pid_length(void);
+.PP
+.B #include <proc/version.h>
+.PP
+.B int procps_linux_version(void);
.sp
Link with \fI\-lprocps\fP.
.SH DESCRIPTION
+This manual page describes the miscellaneous API functions of the
+.B procps
+library.
+
.BR procps_cpu_count ()
returns the number of CPUs that are currently online. On most systems returns
the value of
possible PID value on was 123, then the length would be 3. If the file
\fI/proc/sys/kernel/pid_max\fR is unreadable, the value is assumed to be \fI5\fR.
+.BR procps_linux_version ()
+returns the current Linux version as an integer. On non-Linux systems that
+have an emulated proc filesystem this function returns the version of the
+Linux emulation instead.
+The Linux version consists of a triple of positive integers representing
+the major, minor and patch versions of the kernel.
+.PP
+The library provides 3 macros for separating out the components.
+.RS 4
+.TP 1.2i
+.BR LINUX_VERSION_MAJOR (ver)
+Extract the major component from the given version integer.
+.TP
+.BR LINUX_VERSION_MINOR (ver)
+Extract the minor component from the given version integer.
+.TP
+.BR LINUX_VERSION_PATCH (ver)
+Extract the patch component from the given version integer.
+.RE
+.PP
+To encode a given Linux version, such as using it to compare against the current
+version, use the following macro:
+.TP
+.BI LINUX_VERSION( major , minor , patch )
+
.SH RETURN VALUE
For
.BR procps_cpu_count "() , " procps_hertz_get "() and " procps_pid_length ()
Unable to parse the loadavg file.
.PP
+.BR procps_linux_version ()
+returns a positive integer encoding the Linux version if successful. Otherwise
+returns a negative integer to one of the values defined below.
+.TP
+.B -EIO
+The procps library was unable to read the osrelease file.
+.TP
+.B -ERANGE
+Unable to parse the osrelease file.
+.PP
+.BR procps_linux_version ()
+may also return any (negated) value that \fBfopen\fR() may set errno to.
+
.SH FILES
.TP
.I /proc/loadavg
The raw values for load average.
.TP
+.I /proc/sys/kernel/osrelease
+Contains the release version of the Linux kernel or proc filesystem.
+.TP
.I /proc/sys/kernel/pid_max
Contains the value at which PIDs wrap around, one greater than the maximum PID value.
+.SH BUGS
+Due to the way the three numbers are encoded into a single integer,
+.BR procps_linux_version ()
+and the associated macros assume 255 for the maximum value for the
+minor and patch level and 32767 (hex 0x7fff) for the maximum value
+for the major version. In other words, when Linux v 32768.0.0 comes
+out, this function will break.
+.\" Maj/6yr - In 7452 we'll think of something
+
.SH SEE ALSO
+.BR fopen (3),
.BR sysconf (3),
.BR proc (5).