procps/proc/version.c

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/* Suite version information for procps utilities
* Copyright (c) 1995 Martin Schulze <joey@infodrom.north.de>
* Ammended by cblake to only export the function symbol.
* Redistributable under the terms of the
* GNU Library General Public License; see COPYING
*/
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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
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#include <stdio.h>
#include <stdlib.h>
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#include "version.h"
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#ifdef MINORVERSION
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const char procps_version[] = "procps version " VERSION "." SUBVERSION "." MINORVERSION;
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#else
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const char procps_version[] = "procps version " VERSION "." SUBVERSION;
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#endif
void display_version(void) {
fprintf(stdout, "%s\n", procps_version);
}
/* Linux kernel version information for procps utilities
* Copyright (c) 1996 Charles Blake <cblake@bbn.com>
*/
#include <sys/utsname.h>
#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
int linux_version_code = 0;
static void init_Linux_version(void) __attribute__((constructor));
static void init_Linux_version(void) {
static struct utsname uts;
int x = 0, y = 0, z = 0; /* cleared in case sscanf() < 3 */
if (linux_version_code) return;
if (uname(&uts) == -1) /* failure implies impending death */
exit(1);
if (sscanf(uts.release, "%d.%d.%d", &x, &y, &z) < 3)
fprintf(stderr, /* *very* unlikely to happen by accident */
"Non-standard uts for running kernel:\n"
"release %s=%d.%d.%d gives version code %d\n",
uts.release, x, y, z, LINUX_VERSION(x,y,z));
linux_version_code = LINUX_VERSION(x, y, z);
}