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author | Reinhard Tartler <siretart@tauware.de> | 2011-04-27 19:24:15 +0200 |
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committer | Reinhard Tartler <siretart@tauware.de> | 2011-04-27 19:24:15 +0200 |
commit | 181cec4348da40331b3e8ab365732c025ec149b2 (patch) | |
tree | e2e749be67c8253a8096aaf92aab9c51f1a17f7f /plugin_cpuinfo.c | |
download | lcd4linux-181cec4348da40331b3e8ab365732c025ec149b2.tar.gz |
Import upstream version 0.11.0~svn1143
Diffstat (limited to 'plugin_cpuinfo.c')
-rw-r--r-- | plugin_cpuinfo.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/plugin_cpuinfo.c b/plugin_cpuinfo.c new file mode 100644 index 0000000..76e7233 --- /dev/null +++ b/plugin_cpuinfo.c @@ -0,0 +1,168 @@ +/* $Id: plugin_cpuinfo.c 1079 2010-01-15 21:44:04Z volker $ + * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/plugin_cpuinfo.c $ + * + * plugin for /proc/cpuinfo parsing + * + * Copyright (C) 2003 Michael Reinelt <michael@reinelt.co.at> + * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> + * + * 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 <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#include "debug.h" +#include "plugin.h" +#include "hash.h" + +#ifdef __MAC_OS_X_VERSION_10_3 +#include <sys/types.h> +#include <sys/sysctl.h> +#endif + +static HASH CPUinfo; +static FILE *stream = NULL; + +static int parse_cpuinfo(char *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); + + } + /* to avoid compiler unused warning */ + oid = 0; + +#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); +} |