3c2377ca15
On non-linux systems, uts.version provides the version of that specific kernel (FreeBSD or Hurd version, for example) and not the emulated procfs pseudo version. On those systems we need to directly read /proc/version and parse the string. This change replaces Debian patches gnu-kbsd-version and complain_unmounted_proc patches.
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* Suite version information for procps-ng utilities
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* Copyright (c) 1995 Martin Schulze <joey@infodrom.north.de>
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* Ammended by cblake to only export the function symbol.
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*
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* Modified by Albert Cahalan, ????-2003
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*
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* Redistributable under the terms of the
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* GNU Library General Public License; see COPYING
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "version.h"
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const char procps_version[] = PACKAGE_NAME " version " PACKAGE_VERSION;
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void display_version(void) {
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fprintf(stdout, "%s\n", procps_version);
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}
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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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*/
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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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FILE *fp;
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char buf[256];
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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 (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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}
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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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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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"%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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}
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