/* $Id$ * $URL$ * * plugin for /proc/cpuinfo parsing * * Copyright (C) 2003 Michael Reinelt * Copyright (C) 2004 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ /* * exported functions: * * int plugin_init_cpuinfo (void) * adds functions to access /proc/cpuinfo * */ #include "config.h" #include #include #include #include #include #include "debug.h" #include "plugin.h" #include "hash.h" #ifdef __MAC_OS_X_VERSION_10_3 #include #include #endif static HASH CPUinfo; static FILE *stream = NULL; static int parse_cpuinfo(char __attribute__ ((unused)) * oid) { int age; /* reread every second only */ age = hash_age(&CPUinfo, NULL); if (age > 0 && age <= 1000) return 0; #ifndef __MAC_OS_X_VERSION_10_3 /* Linux Kernel, /proc-filesystem */ if (stream == NULL) stream = fopen("/proc/cpuinfo", "r"); if (stream == NULL) { error("fopen(/proc/cpuinfo) failed: %s", strerror(errno)); return -1; } rewind(stream); while (!feof(stream)) { char buffer[256]; char *c, *key, *val; fgets(buffer, sizeof(buffer), stream); c = strchr(buffer, ':'); if (c == NULL) continue; key = buffer; val = c + 1; /* strip leading blanks from key */ while (isspace(*key)) *key++ = '\0'; /* strip trailing blanks from key */ do *c = '\0'; while (isspace(*--c)); /* strip leading blanks from value */ while (isspace(*val)) *val++ = '\0'; /* strip trailing blanks from value */ for (c = val; *c != '\0'; c++); while (isspace(*--c)) *c = '\0'; /* add entry to hash table */ hash_put(&CPUinfo, key, val); } #else /* MACH Kernel, MacOS X */ char val_ret[256]; int *val; size_t val_len; if (sysctlbyname(oid, NULL, &val_len, NULL, 0) != 0) { error("Error %d by sysctl(%s): %s", errno, oid, strerror(errno)); return -1; } if (val_len > sizeof(val_ret)) { error("Error: Result of sysctl(%s) too big (%zd > %zd)!", oid, val_len, sizeof(val_ret)); return -1; } sysctlbyname(oid, &val_ret, &val_len, NULL, 0); if (val_len == sizeof(int)) { /* we got an integer instead of a string */ val = (int *) val_ret; snprintf(val_ret, sizeof(val_ret), "%d", *val); } hash_put(&CPUinfo, oid, val_ret); #endif return 0; } static void my_cpuinfo(RESULT * result, RESULT * arg1) { char *key, *val; key = R2S(arg1); if (parse_cpuinfo(key) < 0) { SetResult(&result, R_STRING, ""); return; } val = hash_get(&CPUinfo, key, NULL); if (val == NULL) val = ""; SetResult(&result, R_STRING, val); } int plugin_init_cpuinfo(void) { hash_create(&CPUinfo); AddFunction("cpuinfo", 1, my_cpuinfo); return 0; } void plugin_exit_cpuinfo(void) { if (stream != NULL) { fclose(stream); stream = NULL; } hash_destroy(&CPUinfo); } (plain)