library: Change linux version
Added function procps_linux_version() which used to be an exported integer instead. Also changed the method of obtaining the linux version (more correctly the os release) to use a specific procfs entry. This works for both Linux and FreeBSD.
This commit is contained in:
Craig Small
parent
94e5ef15fc
commit
56d9d5e7e7
@ -35,7 +35,6 @@ global:
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kb_swap_free;
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kb_swap_total;
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kb_swap_used;
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linux_version_code;
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loadavg;
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look_up_our_self;
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lookup_wchan;
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@ -60,6 +59,7 @@ global:
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unix_print_signals;
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uptime;
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user_from_uid;
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procps_linux_version;
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local:
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*;
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};
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25
proc/procps-private.h
Normal file
25
proc/procps-private.h
Normal file
@ -0,0 +1,25 @@
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/*
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* libprocps - Library to read proc filesystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef PROCPS_PRIVATE_H
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#define PROCPS_PRIVATE_H
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#include <proc/procps.h>
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#define PROCPS_EXPORT __attribute__ ((visibility("default")))
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#endif
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@ -78,21 +78,6 @@
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#define OBSOLETE
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#endif
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#if ( __GNUC__ == 3 && __GNUC_MINOR__ > 1 ) || __GNUC__ > 3
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// Tells gcc that function is library-internal;
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// so no need to do dynamic linking at run-time.
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// This might work with slightly older compilers too.
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#define HIDDEN __attribute__((visibility("hidden")))
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// The opposite, in case -fvisibility=hidden used
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#define EXPORT __attribute__((visibility("default")))
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// Tell g++ that a function won't throw exceptions.
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#define NOTHROW __attribute__((__nothrow__))
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#else
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#define HIDDEN
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#define EXPORT
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#define NOTHROW
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#endif
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// Like HIDDEN, but for an alias that gets created.
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// In gcc-3.2 there is an alias+hidden conflict.
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// Many will have patched this bug, but oh well.
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@ -275,7 +275,7 @@ static int check_for_privs(void){
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static void init_libproc(void) __attribute__((constructor));
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static void init_libproc(void){
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have_privs = check_for_privs();
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init_Linux_version(); /* Must be called before we check code */
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int linux_version_code = procps_linux_version();
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cpuinfo();
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page_bytes = sysconf(_SC_PAGESIZE);
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@ -623,6 +623,7 @@ static unsigned long kb_inactive_file;
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void meminfo(void){
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char namebuf[32]; /* big enough to hold any row name */
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int linux_version_code = procps_linux_version();
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mem_table_struct findme = { namebuf, NULL};
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mem_table_struct *found;
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char *head;
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@ -1,9 +1,10 @@
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/*
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* Suite version information for procps-ng utilities
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* Copyright (c) 1995 Martin Schulze <joey@infodrom.north.de>
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* Amended by cblake to only export the function symbol.
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* libprocps - Library to read proc filesystem
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*
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* Modified by Albert Cahalan, ????-2003
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* Copyright (C) 1995 Martin Schulze <joey@infodrom.north.de>
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* Copyright (C) 1996 Charles Blake <cblake@bbn.com>
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* Copyright (C) 2003 Albert Cahalan
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* Copyright (C) 2015 Craig Small <csmall@enc.com.au>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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@ -19,59 +20,44 @@
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "procps-private.h"
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#include "version.h"
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/* Linux kernel version information for procps-ng utilities
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* Copyright (c) 1996 Charles Blake <cblake@bbn.com>
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#define PROCFS_OSRELEASE "/proc/sys/kernel/osrelease"
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/*
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* procps_linux_version
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*
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* Return the current running Linux version release as shown in
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* the procps filesystem.
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*
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* There are three ways you can get OS release:
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* 1) /proc/sys/kernel/osrelease - returns correct version of procfs
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* 2) /proc/version - returns version of kernel e.g. BSD this is wrong
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* 3) uname and uts.release - same as /proc/version field #3
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*
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* Returns: version as an integer
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* Negative value means an error
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*/
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#include <sys/utsname.h>
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#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
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int linux_version_code;
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void init_Linux_version(void) {
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int x = 0, y = 0, z = 0; /* cleared in case sscanf() < 3 */
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int version_string_depth;
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#ifdef __linux__
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static struct utsname uts;
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if (uname(&uts) == -1) /* failure implies impending death */
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exit(1);
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version_string_depth = sscanf(uts.release, "%d.%d.%d", &x, &y, &z);
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#else
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PROCPS_EXPORT int procps_linux_version(void)
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{
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FILE *fp;
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char buf[256];
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unsigned int x = 0, y = 0, z = 0;
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int version_string_depth;
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if ( (fp=fopen("/proc/version","r")) == NULL) {
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fprintf(stderr, "Cannot find /proc/version - is /proc mounted?\n");
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exit(1);
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}
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if ((fp = fopen(PROCFS_OSRELEASE, "r")) == NULL)
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return -errno;
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if (fgets(buf, 256, fp) == NULL) {
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fprintf(stderr, "Cannot read kernel version from /proc/version\n");
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fclose(fp);
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exit(1);
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fclose(fp);
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return -EIO;
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}
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fclose(fp);
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version_string_depth = sscanf(buf, "Linux version %d.%d.%d", &x, &y, &z);
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#endif /* __linux__ */
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version_string_depth = sscanf(buf, "%u.%u.%u", &x, &y, &z);
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if ((version_string_depth < 2) || /* Non-standard for all known kernels */
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((version_string_depth < 3) && (x < 3))) /* Non-standard for 2.x.x kernels */
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#ifdef __linux__
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fprintf(stderr, /* *very* unlikely to happen by accident */
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"Non-standard uts for running kernel:\n"
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"release %s=%d.%d.%d gives version code %d\n",
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uts.release, x, y, z, LINUX_VERSION(x,y,z));
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#else
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fprintf(stderr, /* *very* unlikely to happen by accident */
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"%s=%d.%d.%d gives version code %d\n",
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buf, x, y, z, LINUX_VERSION(x,y,z));
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#endif /* __linux__ */
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linux_version_code = LINUX_VERSION(x, y, z);
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return -ERANGE;
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return LINUX_VERSION(x,y,z);
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}
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@ -1,23 +1,33 @@
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/*
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* libprocps - Library to read proc filesystem
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*
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* Copyright (C) 1995 Martin Schulze <joey@infodrom.north.de>
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* Copyright (C) 1996 Charles Blake <cblake@bbn.com>
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* Copyright (C) 2003 Albert Cahalan
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* Copyright (C) 2015 Craig Small <csmall@enc.com.au>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef PROC_VERSION_H
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#define PROC_VERSION_H
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#include "procps.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Suite version information for procps-ng utilities
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* Copyright (c) 1995 Martin Schulze <joey@infodrom.north.de>
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* Linux kernel version information for procps-ng utilities
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* Copyright (c) 1996 Charles Blake <cblake@bbn.com>
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* Distributable under the terms of the GNU Library General Public License
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*
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* Copyright 2002 Albert Cahalan
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*/
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EXTERN_C_BEGIN
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void init_Linux_version(void); /* Get Linux version */
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extern int linux_version_code; /* runtime version of LINUX_VERSION_CODE
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in /usr/include/linux/version.h */
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int procps_linux_version(void);
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/* Convenience macros for composing/decomposing version codes */
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#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
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@ -25,6 +35,8 @@ extern int linux_version_code; /* runtime version of LINUX_VERSION_CODE
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#define LINUX_VERSION_MINOR(x) (((x)>> 8) & 0xFF)
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#define LINUX_VERSION_PATCH(x) ( (x) & 0xFF)
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EXTERN_C_END
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* PROC_VERSION_H */
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@ -455,6 +455,7 @@ static const char archdefs[] =
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/*********** spew variables ***********/
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void self_info(void){
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int linux_version_code = procps_linux_version();
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fprintf(stderr,
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"BSD j %s\n"
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"BSD l %s\n"
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@ -407,6 +407,7 @@ static void bye_bye (const char *str) {
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at_eoj(); // restore tty in preparation for exit
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#ifdef ATEOJ_RPTSTD
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{ proc_t *p;
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int linux_version_code = procps_linux_version();
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if (!str && !Frames_signal && Ttychanged) { fprintf(stderr,
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"\n%s's Summary report:"
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"\n\tProgram"
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@ -3263,6 +3264,7 @@ static void before (char *me) {
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struct sigaction sa;
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proc_t p;
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int i;
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int linux_version_code = procps_linux_version();
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atexit(close_stdout);
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