git.maemo.org Git - monky/blob - src/linux.c

   1 /* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
   2  * vim: ts=4 sw=4 noet ai cindent syntax=c
   3  *
   4  * Conky, a system monitor, based on torsmo
   5  *
   6  * Any original torsmo code is licensed under the BSD license
   7  *
   8  * All code written since the fork of torsmo is licensed under the GPL
   9  *
  10  * Please see COPYING for details
  11  *
  12  * Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
  13  * Copyright (c) 2007 Toni Spets
  14  * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
  15  *      (see AUTHORS)
  16  * All rights reserved.
  17  *
  18  * This program is free software: you can redistribute it and/or modify
  19  * it under the terms of the GNU General Public License as published by
  20  * the Free Software Foundation, either version 3 of the License, or
  21  * (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  * GNU General Public License for more details.
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  29  *
  30  */
  31
  32 #include "conky.h"
  33 #include "logging.h"
  34 #include "common.h"
  35 #include "linux.h"
  36 #include "diskio.h"
  37 #include "temphelper.h"
  38 #include <dirent.h>
  39 #include <ctype.h>
  40 #include <errno.h>
  41 #include <limits.h>
  42 #include <sys/types.h>
  43 #include <sys/sysinfo.h>
  44 #include <sys/stat.h>
  45 #ifndef HAVE_CLOCK_GETTIME
  46 #include <sys/time.h>
  47 #endif
  48 #include <fcntl.h>
  49 #include <unistd.h>
  50 // #include <assert.h>
  51 #include <time.h>
  52 #include "top.h"
  53
  54 #include <sys/ioctl.h>
  55 #include <sys/socket.h>
  56 #include <netinet/in.h>
  57 #include <linux/sockios.h>
  58 #include <net/if.h>
  59 #include <arpa/inet.h>
  60 #ifdef _NET_IF_H
  61 #define _LINUX_IF_H
  62 #endif
  63 #include <linux/route.h>
  64 #include <math.h>
  65
  66 /* The following ifdefs were adapted from gkrellm */
  67 #include <linux/major.h>
  68
  69 #if !defined(MD_MAJOR)
  70 #define MD_MAJOR 9
  71 #endif
  72
  73 #if !defined(LVM_BLK_MAJOR)
  74 #define LVM_BLK_MAJOR 58
  75 #endif
  76
  77 #if !defined(NBD_MAJOR)
  78 #define NBD_MAJOR 43
  79 #endif
  80
  81 #ifdef HAVE_IWLIB
  82 #include <iwlib.h>
  83 #endif
  84
  85 #define SHORTSTAT_TEMPL "%*s %llu %llu %llu"
  86 #define LONGSTAT_TEMPL "%*s %llu %llu %llu "
  87
  88 /* This flag tells the linux routines to use the /proc system where possible,
  89  * even if other api's are available, e.g. sysinfo() or getloadavg().
  90  * the reason for this is to allow for /proc-based distributed monitoring.
  91  * using a flag in this manner creates less confusing code. */
  92 static int prefer_proc = 0;
  93
  94 void prepare_update(void)
  95 {
  96 }
  97
  98 void update_uptime(void)
  99 {
 100 #ifdef HAVE_SYSINFO
 101         if (!prefer_proc) {
 102                 struct sysinfo s_info;
 103
 104                 sysinfo(&s_info);
 105                 info.uptime = (double) s_info.uptime;
 106         } else
 107 #endif
 108         {
 109                 static int rep = 0;
 110                 FILE *fp;
 111
 112                 if (!(fp = open_file("/proc/uptime", &rep))) {
 113                         info.uptime = 0.0;
 114                         return;
 115                 }
 116                 fscanf(fp, "%lf", &info.uptime);
 117                 fclose(fp);
 118         }
 119 }
 120
 121 int check_mount(char *s)
 122 {
 123         int ret = 0;
 124         FILE *mtab = fopen("/etc/mtab", "r");
 125
 126         if (mtab) {
 127                 char buf1[256], buf2[128];
 128
 129                 while (fgets(buf1, 256, mtab)) {
 130                         sscanf(buf1, "%*s %128s", buf2);
 131                         if (!strcmp(s, buf2)) {
 132                                 ret = 1;
 133                                 break;
 134                         }
 135                 }
 136                 fclose(mtab);
 137         } else {
 138                 NORM_ERR("Could not open mtab");
 139         }
 140         return ret;
 141 }
 142
 143 /* these things are also in sysinfo except Buffers:
 144  * (that's why I'm reading them from proc) */
 145
 146 void update_meminfo(void)
 147 {
 148         FILE *meminfo_fp;
 149         static int rep = 0;
 150
 151         /* unsigned int a; */
 152         char buf[256];
 153
 154         info.mem = info.memmax = info.swap = info.swapfree = info.swapmax = info.bufmem =
 155                 info.buffers = info.cached = info.memfree = info.memeasyfree = 0;
 156
 157         if (!(meminfo_fp = open_file("/proc/meminfo", &rep))) {
 158                 return;
 159         }
 160
 161         while (!feof(meminfo_fp)) {
 162                 if (fgets(buf, 255, meminfo_fp) == NULL) {
 163                         break;
 164                 }
 165
 166                 if (strncmp(buf, "MemTotal:", 9) == 0) {
 167                         sscanf(buf, "%*s %llu", &info.memmax);
 168                 } else if (strncmp(buf, "MemFree:", 8) == 0) {
 169                         sscanf(buf, "%*s %llu", &info.memfree);
 170                 } else if (strncmp(buf, "SwapTotal:", 10) == 0) {
 171                         sscanf(buf, "%*s %llu", &info.swapmax);
 172                 } else if (strncmp(buf, "SwapFree:", 9) == 0) {
 173                         sscanf(buf, "%*s %llu", &info.swapfree);
 174                 } else if (strncmp(buf, "Buffers:", 8) == 0) {
 175                         sscanf(buf, "%*s %llu", &info.buffers);
 176                 } else if (strncmp(buf, "Cached:", 7) == 0) {
 177                         sscanf(buf, "%*s %llu", &info.cached);
 178                 }
 179         }
 180
 181         info.mem = info.memmax - info.memfree;
 182         info.memeasyfree = info.memfree;
 183         info.swap = info.swapmax - info.swapfree;
 184
 185         info.bufmem = info.cached + info.buffers;
 186
 187         fclose(meminfo_fp);
 188 }
 189
 190 int get_laptop_mode(void)
 191 {
 192         FILE *fp;
 193         int val = -1;
 194
 195         if ((fp = fopen("/proc/sys/vm/laptop_mode", "r")) != NULL)
 196                 fscanf(fp, "%d\n", &val);
 197         fclose(fp);
 198         return val;
 199 }
 200
 201 /* my system says:
 202  * # cat /sys/block/sda/queue/scheduler
 203  * noop [anticipatory] cfq
 204  */
 205 char *get_ioscheduler(char *disk)
 206 {
 207         FILE *fp;
 208         char buf[128];
 209
 210         if (!disk)
 211                 return strndup("n/a", text_buffer_size);
 212
 213         snprintf(buf, 127, "/sys/block/%s/queue/scheduler", disk);
 214         if ((fp = fopen(buf, "r")) == NULL) {
 215                 return strndup("n/a", text_buffer_size);
 216         }
 217         while (!feof(fp)) {
 218                 fscanf(fp, "%127s", buf);
 219                 if (buf[0] == '[') {
 220                         buf[strlen(buf) - 1] = '\0';
 221                         fclose(fp);
 222                         return strndup(buf + 1, text_buffer_size);
 223                 }
 224         }
 225         fclose(fp);
 226         return strndup("n/a", text_buffer_size);
 227 }
 228
 229 #define COND_FREE(x) if(x) free(x); x = 0
 230 #define SAVE_SET_STRING(x, y) \
 231         if (x && strcmp((char *)x, (char *)y)) { \
 232                 free(x); \
 233                 x = strndup("multiple", text_buffer_size); \
 234         } else if (!x) { \
 235                 x = strndup(y, text_buffer_size); \
 236         }
 237
 238 void update_gateway_info_failure(const char *reason)
 239 {
 240         if(reason != NULL) {
 241                 perror(reason);
 242         }
 243         //2 pointers to 1 location causes a crash when we try to free them both
 244         info.gw_info.iface = strndup("failed", text_buffer_size);
 245         info.gw_info.ip = strndup("failed", text_buffer_size);
 246 }
 247
 248
 249 /* Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT */
 250 #define RT_ENTRY_FORMAT "%63s %lx %lx %x %*d %*d %*d %lx %*d %*d %*d\n"
 251
 252 void update_gateway_info(void)
 253 {
 254         FILE *fp;
 255         struct in_addr ina;
 256         char iface[64];
 257         unsigned long dest, gate, mask;
 258         unsigned int flags;
 259
 260         struct gateway_info *gw_info = &info.gw_info;
 261
 262         COND_FREE(gw_info->iface);
 263         COND_FREE(gw_info->ip);
 264         gw_info->count = 0;
 265
 266         if ((fp = fopen("/proc/net/route", "r")) == NULL) {
 267                 update_gateway_info_failure("fopen()");
 268                 return;
 269         }
 270
 271         /* skip over the table header line, which is always present */
 272         fscanf(fp, "%*[^\n]\n");
 273
 274         while (!feof(fp)) {
 275                 if(fscanf(fp, RT_ENTRY_FORMAT,
 276                           iface, &dest, &gate, &flags, &mask) != 5) {
 277                         update_gateway_info_failure("fscanf()");
 278                         break;
 279                 }
 280                 if (!(dest || mask) && ((flags & RTF_GATEWAY) || !gate) ) {
 281                         gw_info->count++;
 282                         SAVE_SET_STRING(gw_info->iface, iface)
 283                         ina.s_addr = gate;
 284                         SAVE_SET_STRING(gw_info->ip, inet_ntoa(ina))
 285                 }
 286         }
 287         fclose(fp);
 288         return;
 289 }
 290
 291 void update_net_stats(void)
 292 {
 293         FILE *net_dev_fp;
 294         static int rep = 0;
 295         static char first = 1;
 296
 297         // FIXME: arbitrary size chosen to keep code simple.
 298         int i, i2;
 299         unsigned int curtmp1, curtmp2;
 300         unsigned int k;
 301         struct ifconf conf;
 302         char buf[256];
 303         double delta;
 304
 305 #ifdef HAVE_IWLIB
 306         // wireless info variables
 307         int skfd, has_bitrate = 0;
 308         struct wireless_info *winfo;
 309         struct iwreq wrq;
 310 #endif
 311
 312         /* get delta */
 313         delta = current_update_time - last_update_time;
 314         if (delta <= 0.0001) {
 315                 return;
 316         }
 317
 318         /* open file and ignore first two lines */
 319         if (!(net_dev_fp = open_file("/proc/net/dev", &rep))) {
 320                 clear_net_stats();
 321                 return;
 322         }
 323
 324         fgets(buf, 255, net_dev_fp);    /* garbage */
 325         fgets(buf, 255, net_dev_fp);    /* garbage (field names) */
 326
 327         /* read each interface */
 328         for (i2 = 0; i2 < 16; i2++) {
 329                 struct net_stat *ns;
 330                 char *s, *p;
 331                 char temp_addr[18];
 332                 long long r, t, last_recv, last_trans;
 333
 334                 if (fgets(buf, 255, net_dev_fp) == NULL) {
 335                         break;
 336                 }
 337                 p = buf;
 338                 while (isspace((int) *p)) {
 339                         p++;
 340                 }
 341
 342                 s = p;
 343
 344                 while (*p && *p != ':') {
 345                         p++;
 346                 }
 347                 if (*p == '\0') {
 348                         continue;
 349                 }
 350                 *p = '\0';
 351                 p++;
 352
 353                 ns = get_net_stat(s, NULL, NULL);
 354                 ns->up = 1;
 355                 memset(&(ns->addr.sa_data), 0, 14);
 356
 357                 memset(ns->addrs, 0, 17 * 16 + 1); /* Up to 17 chars per ip, max 16 interfaces. Nasty memory usage... */
 358
 359                 last_recv = ns->recv;
 360                 last_trans = ns->trans;
 361
 362                 /* bytes packets errs drop fifo frame compressed multicast|bytes ... */
 363                 sscanf(p, "%lld  %*d     %*d  %*d  %*d  %*d   %*d        %*d       %lld",
 364                         &r, &t);
 365
 366                 /* if recv or trans is less than last time, an overflow happened */
 367                 if (r < ns->last_read_recv) {
 368                         last_recv = 0;
 369                 } else {
 370                         ns->recv += (r - ns->last_read_recv);
 371                 }
 372                 ns->last_read_recv = r;
 373
 374                 if (t < ns->last_read_trans) {
 375                         last_trans = 0;
 376                 } else {
 377                         ns->trans += (t - ns->last_read_trans);
 378                 }
 379                 ns->last_read_trans = t;
 380
 381                 /*** ip addr patch ***/
 382                 i = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 383
 384                 conf.ifc_buf = malloc(sizeof(struct ifreq) * 16);
 385                 conf.ifc_len = sizeof(struct ifreq) * 16;
 386                 memset(conf.ifc_buf, 0, conf.ifc_len);
 387
 388                 ioctl((long) i, SIOCGIFCONF, &conf);
 389
 390                 for (k = 0; k < conf.ifc_len / sizeof(struct ifreq); k++) {
 391                         struct net_stat *ns2;
 392
 393                         if (!(((struct ifreq *) conf.ifc_buf) + k))
 394                                 break;
 395
 396                         ns2 = get_net_stat(
 397                                         ((struct ifreq *) conf.ifc_buf)[k].ifr_ifrn.ifrn_name, NULL, NULL);
 398                         ns2->addr = ((struct ifreq *) conf.ifc_buf)[k].ifr_ifru.ifru_addr;
 399                         sprintf(temp_addr, "%u.%u.%u.%u, ",
 400                                         ns2->addr.sa_data[2] & 255,
 401                                         ns2->addr.sa_data[3] & 255,
 402                                         ns2->addr.sa_data[4] & 255,
 403                                         ns2->addr.sa_data[5] & 255);
 404                         if(NULL == strstr(ns2->addrs, temp_addr))
 405                                 strncpy(ns2->addrs + strlen(ns2->addrs), temp_addr, 17);
 406                 }
 407
 408                 close((long) i);
 409
 410                 free(conf.ifc_buf);
 411
 412                 /*** end ip addr patch ***/
 413
 414                 if (!first) {
 415                         /* calculate speeds */
 416                         ns->net_rec[0] = (ns->recv - last_recv) / delta;
 417                         ns->net_trans[0] = (ns->trans - last_trans) / delta;
 418                 }
 419
 420                 curtmp1 = 0;
 421                 curtmp2 = 0;
 422                 // get an average
 423 #ifdef HAVE_OPENMP
 424 #pragma omp parallel for reduction(+:curtmp1, curtmp2) schedule(dynamic,10)
 425 #endif /* HAVE_OPENMP */
 426                 for (i = 0; i < info.net_avg_samples; i++) {
 427                         curtmp1 = curtmp1 + ns->net_rec[i];
 428                         curtmp2 = curtmp2 + ns->net_trans[i];
 429                 }
 430                 if (curtmp1 == 0) {
 431                         curtmp1 = 1;
 432                 }
 433                 if (curtmp2 == 0) {
 434                         curtmp2 = 1;
 435                 }
 436                 ns->recv_speed = curtmp1 / (double) info.net_avg_samples;
 437                 ns->trans_speed = curtmp2 / (double) info.net_avg_samples;
 438                 if (info.net_avg_samples > 1) {
 439 #ifdef HAVE_OPENMP
 440 #pragma omp parallel for schedule(dynamic,10)
 441 #endif /* HAVE_OPENMP */
 442                         for (i = info.net_avg_samples; i > 1; i--) {
 443                                 ns->net_rec[i - 1] = ns->net_rec[i - 2];
 444                                 ns->net_trans[i - 1] = ns->net_trans[i - 2];
 445                         }
 446                 }
 447
 448 #ifdef HAVE_IWLIB
 449                 /* update wireless info */
 450                 winfo = malloc(sizeof(struct wireless_info));
 451                 memset(winfo, 0, sizeof(struct wireless_info));
 452
 453                 skfd = iw_sockets_open();
 454                 if (iw_get_basic_config(skfd, s, &(winfo->b)) > -1) {
 455
 456                         // set present winfo variables
 457                         if (iw_get_stats(skfd, s, &(winfo->stats),
 458                                         &winfo->range, winfo->has_range) >= 0) {
 459                                 winfo->has_stats = 1;
 460                         }
 461                         if (iw_get_range_info(skfd, s, &(winfo->range)) >= 0) {
 462                                 winfo->has_range = 1;
 463                         }
 464                         if (iw_get_ext(skfd, s, SIOCGIWAP, &wrq) >= 0) {
 465                                 winfo->has_ap_addr = 1;
 466                                 memcpy(&(winfo->ap_addr), &(wrq.u.ap_addr), sizeof(sockaddr));
 467                         }
 468
 469                         // get bitrate
 470                         if (iw_get_ext(skfd, s, SIOCGIWRATE, &wrq) >= 0) {
 471                                 memcpy(&(winfo->bitrate), &(wrq.u.bitrate), sizeof(iwparam));
 472                                 iw_print_bitrate(ns->bitrate, 16, winfo->bitrate.value);
 473                                 has_bitrate = 1;
 474                         }
 475
 476                         // get link quality
 477                         if (winfo->has_range && winfo->has_stats
 478                                         && ((winfo->stats.qual.level != 0)
 479                                         || (winfo->stats.qual.updated & IW_QUAL_DBM))) {
 480                                 if (!(winfo->stats.qual.updated & IW_QUAL_QUAL_INVALID)) {
 481                                         ns->link_qual = winfo->stats.qual.qual;
 482                                         ns->link_qual_max = winfo->range.max_qual.qual;
 483                                 }
 484                         }
 485
 486                         // get ap mac
 487                         if (winfo->has_ap_addr) {
 488                                 iw_sawap_ntop(&winfo->ap_addr, ns->ap);
 489                         }
 490
 491                         // get essid
 492                         if (winfo->b.has_essid) {
 493                                 if (winfo->b.essid_on) {
 494                                         snprintf(ns->essid, 32, "%s", winfo->b.essid);
 495                                 } else {
 496                                         snprintf(ns->essid, 32, "off/any");
 497                                 }
 498                         }
 499
 500                         snprintf(ns->mode, 16, "%s", iw_operation_mode[winfo->b.mode]);
 501                 }
 502                 iw_sockets_close(skfd);
 503                 free(winfo);
 504 #endif
 505         }
 506         first = 0;
 507
 508         fclose(net_dev_fp);
 509 }
 510
 511 int result;
 512
 513 void update_total_processes(void)
 514 {
 515 #ifdef HAVE_SYSINFO
 516         if (!prefer_proc) {
 517                 struct sysinfo s_info;
 518
 519                 sysinfo(&s_info);
 520                 info.procs = s_info.procs;
 521         } else
 522 #endif
 523         {
 524                 static int rep = 0;
 525                 FILE *fp;
 526
 527                 if (!(fp = open_file("/proc/loadavg", &rep))) {
 528                         info.procs = 0;
 529                         return;
 530                 }
 531                 fscanf(fp, "%*f %*f %*f %*d/%hu", &info.procs);
 532                 fclose(fp);
 533         }
 534 }
 535
 536 #define CPU_SAMPLE_COUNT 15
 537 struct cpu_info {
 538         unsigned long long cpu_user;
 539         unsigned long long cpu_system;
 540         unsigned long long cpu_nice;
 541         unsigned long long cpu_idle;
 542         unsigned long long cpu_iowait;
 543         unsigned long long cpu_irq;
 544         unsigned long long cpu_softirq;
 545         unsigned long long cpu_steal;
 546         unsigned long long cpu_total;
 547         unsigned long long cpu_active_total;
 548         unsigned long long cpu_last_total;
 549         unsigned long long cpu_last_active_total;
 550         double cpu_val[CPU_SAMPLE_COUNT];
 551 };
 552 static short cpu_setup = 0;
 553
 554 /* Determine if this kernel gives us "extended" statistics information in
 555  * /proc/stat.
 556  * Kernels around 2.5 and earlier only reported user, system, nice, and
 557  * idle values in proc stat.
 558  * Kernels around 2.6 and greater report these PLUS iowait, irq, softirq,
 559  * and steal */
 560 void determine_longstat(char *buf)
 561 {
 562         unsigned long long iowait = 0;
 563
 564         KFLAG_SETOFF(KFLAG_IS_LONGSTAT);
 565         /* scanf will either return -1 or 1 because there is only 1 assignment */
 566         if (sscanf(buf, "%*s %*d %*d %*d %*d %llu", &iowait) > 0) {
 567                 KFLAG_SETON(KFLAG_IS_LONGSTAT);
 568         }
 569 }
 570
 571 void get_cpu_count(void)
 572 {
 573         FILE *stat_fp;
 574         static int rep = 0;
 575         char buf[256];
 576
 577         if (info.cpu_usage) {
 578                 return;
 579         }
 580
 581         if (!(stat_fp = open_file("/proc/stat", &rep))) {
 582                 return;
 583         }
 584
 585         info.cpu_count = 0;
 586
 587         while (!feof(stat_fp)) {
 588                 if (fgets(buf, 255, stat_fp) == NULL) {
 589                         break;
 590                 }
 591
 592                 if (strncmp(buf, "cpu", 3) == 0 && isdigit(buf[3])) {
 593                         if (info.cpu_count == 0) {
 594                                 determine_longstat(buf);
 595                         }
 596                         info.cpu_count++;
 597                 }
 598         }
 599         info.cpu_usage = malloc((info.cpu_count + 1) * sizeof(float));
 600
 601         fclose(stat_fp);
 602 }
 603
 604 #define TMPL_LONGSTAT "%*s %llu %llu %llu %llu %llu %llu %llu %llu"
 605 #define TMPL_SHORTSTAT "%*s %llu %llu %llu %llu"
 606
 607 inline static void update_stat(void)
 608 {
 609         FILE *stat_fp;
 610         static int rep = 0;
 611         static struct cpu_info *cpu = NULL;
 612         char buf[256];
 613         int i;
 614         unsigned int idx;
 615         double curtmp;
 616         const char *stat_template = NULL;
 617         unsigned int malloc_cpu_size = 0;
 618         extern void* global_cpu;
 619         static double last_stat_update = 0.0;
 620
 621         /* since we use wrappers for this function, the update machinery
 622          * can't eliminate double invocations of this function. Check for
 623          * them here, otherwise cpu_usage counters are freaking out. */
 624         if (last_stat_update == current_update_time)
 625                 return;
 626         last_stat_update = current_update_time;
 627
 628         /* add check for !info.cpu_usage since that mem is freed on a SIGUSR1 */
 629         if (!cpu_setup || !info.cpu_usage) {
 630                 get_cpu_count();
 631                 cpu_setup = 1;
 632         }
 633
 634         if (!stat_template) {
 635                 stat_template =
 636                         KFLAG_ISSET(KFLAG_IS_LONGSTAT) ? TMPL_LONGSTAT : TMPL_SHORTSTAT;
 637         }
 638
 639         if (!global_cpu) {
 640                 malloc_cpu_size = (info.cpu_count + 1) * sizeof(struct cpu_info);
 641                 cpu = malloc(malloc_cpu_size);
 642                 memset(cpu, 0, malloc_cpu_size);
 643                 global_cpu = cpu;
 644         }
 645
 646         if (!(stat_fp = open_file("/proc/stat", &rep))) {
 647                 info.run_procs = 0;
 648                 if (info.cpu_usage) {
 649                         memset(info.cpu_usage, 0, info.cpu_count * sizeof(float));
 650                 }
 651                 return;
 652         }
 653
 654         idx = 0;
 655         while (!feof(stat_fp)) {
 656                 if (fgets(buf, 255, stat_fp) == NULL) {
 657                         break;
 658                 }
 659
 660                 if (strncmp(buf, "procs_running ", 14) == 0) {
 661                         sscanf(buf, "%*s %hu", &info.run_procs);
 662                 } else if (strncmp(buf, "cpu", 3) == 0) {
 663                         double delta;
 664                         if (isdigit(buf[3])) {
 665                                 idx = atoi(&buf[3]) + 1;
 666                         } else {
 667                                 idx = 0;
 668                         }
 669                         sscanf(buf, stat_template, &(cpu[idx].cpu_user),
 670                                 &(cpu[idx].cpu_nice), &(cpu[idx].cpu_system),
 671                                 &(cpu[idx].cpu_idle), &(cpu[idx].cpu_iowait),
 672                                 &(cpu[idx].cpu_irq), &(cpu[idx].cpu_softirq),
 673                                 &(cpu[idx].cpu_steal));
 674
 675                         cpu[idx].cpu_total = cpu[idx].cpu_user + cpu[idx].cpu_nice +
 676                                 cpu[idx].cpu_system + cpu[idx].cpu_idle +
 677                                 cpu[idx].cpu_iowait + cpu[idx].cpu_irq +
 678                                 cpu[idx].cpu_softirq + cpu[idx].cpu_steal;
 679
 680                         cpu[idx].cpu_active_total = cpu[idx].cpu_total -
 681                                 (cpu[idx].cpu_idle + cpu[idx].cpu_iowait);
 682
 683                         delta = current_update_time - last_update_time;
 684
 685                         if (delta <= 0.001) {
 686                                 break;
 687                         }
 688
 689                         cpu[idx].cpu_val[0] = (cpu[idx].cpu_active_total -
 690                                 cpu[idx].cpu_last_active_total) /
 691                                 (float) (cpu[idx].cpu_total - cpu[idx].cpu_last_total);
 692                         curtmp = 0;
 693 #ifdef HAVE_OPENMP
 694 #pragma omp parallel for reduction(+:curtmp) schedule(dynamic,10)
 695 #endif /* HAVE_OPENMP */
 696                         for (i = 0; i < info.cpu_avg_samples; i++) {
 697                                 curtmp = curtmp + cpu[idx].cpu_val[i];
 698                         }
 699                         /* TESTING -- I've removed this, because I don't think it is right.
 700                          * You shouldn't divide by the cpu count here ...
 701                          * removing for testing */
 702                         /* if (idx == 0) {
 703                                 info.cpu_usage[idx] = curtmp / info.cpu_avg_samples /
 704                                         info.cpu_count;
 705                         } else {
 706                                 info.cpu_usage[idx] = curtmp / info.cpu_avg_samples;
 707                         } */
 708                         /* TESTING -- this line replaces the prev. "suspect" if/else */
 709                         info.cpu_usage[idx] = curtmp / info.cpu_avg_samples;
 710
 711                         cpu[idx].cpu_last_total = cpu[idx].cpu_total;
 712                         cpu[idx].cpu_last_active_total = cpu[idx].cpu_active_total;
 713 #ifdef HAVE_OPENMP
 714 #pragma omp parallel for schedule(dynamic,10)
 715 #endif /* HAVE_OPENMP */
 716                         for (i = info.cpu_avg_samples - 1; i > 0; i--) {
 717                                 cpu[idx].cpu_val[i] = cpu[idx].cpu_val[i - 1];
 718                         }
 719                 }
 720         }
 721         fclose(stat_fp);
 722 }
 723
 724 void update_running_processes(void)
 725 {
 726         update_stat();
 727 }
 728
 729 void update_cpu_usage(void)
 730 {
 731         update_stat();
 732 }
 733
 734 void update_load_average(void)
 735 {
 736 #ifdef HAVE_GETLOADAVG
 737         if (!prefer_proc) {
 738                 double v[3];
 739
 740                 getloadavg(v, 3);
 741                 info.loadavg[0] = (float) v[0];
 742                 info.loadavg[1] = (float) v[1];
 743                 info.loadavg[2] = (float) v[2];
 744         } else
 745 #endif
 746         {
 747                 static int rep = 0;
 748                 FILE *fp;
 749
 750                 if (!(fp = open_file("/proc/loadavg", &rep))) {
 751                         info.loadavg[0] = info.loadavg[1] = info.loadavg[2] = 0.0;
 752                         return;
 753                 }
 754                 fscanf(fp, "%f %f %f", &info.loadavg[0], &info.loadavg[1],
 755                         &info.loadavg[2]);
 756                 fclose(fp);
 757         }
 758 }
 759
 760 #define PROC_I8K "/proc/i8k"
 761 #define I8K_DELIM " "
 762 static char *i8k_procbuf = NULL;
 763 void update_i8k(void)
 764 {
 765         FILE *fp;
 766
 767         if (!i8k_procbuf) {
 768                 i8k_procbuf = (char *) malloc(128 * sizeof(char));
 769         }
 770         if ((fp = fopen(PROC_I8K, "r")) == NULL) {
 771                 CRIT_ERR(NULL, NULL, "/proc/i8k doesn't exist! use insmod to make sure the kernel "
 772                         "driver is loaded...");
 773         }
 774
 775         memset(&i8k_procbuf[0], 0, 128);
 776         if (fread(&i8k_procbuf[0], sizeof(char), 128, fp) == 0) {
 777                 NORM_ERR("something wrong with /proc/i8k...");
 778         }
 779
 780         fclose(fp);
 781
 782         i8k.version = strtok(&i8k_procbuf[0], I8K_DELIM);
 783         i8k.bios = strtok(NULL, I8K_DELIM);
 784         i8k.serial = strtok(NULL, I8K_DELIM);
 785         i8k.cpu_temp = strtok(NULL, I8K_DELIM);
 786         i8k.left_fan_status = strtok(NULL, I8K_DELIM);
 787         i8k.right_fan_status = strtok(NULL, I8K_DELIM);
 788         i8k.left_fan_rpm = strtok(NULL, I8K_DELIM);
 789         i8k.right_fan_rpm = strtok(NULL, I8K_DELIM);
 790         i8k.ac_status = strtok(NULL, I8K_DELIM);
 791         i8k.buttons_status = strtok(NULL, I8K_DELIM);
 792 }
 793
 794 /***********************************************************/
 795 /***********************************************************/
 796 /***********************************************************/
 797
 798 static int no_dots(const struct dirent *d)
 799 {
 800         if (d->d_name[0] == '.') {
 801                 return 0;
 802         }
 803         return 1;
 804 }
 805
 806 static int get_first_file_in_a_directory(const char *dir, char *s, int *rep)
 807 {
 808         struct dirent **namelist;
 809         int i, n;
 810
 811         n = scandir(dir, &namelist, no_dots, alphasort);
 812         if (n < 0) {
 813                 if (!rep || !*rep) {
 814                         NORM_ERR("scandir for %s: %s", dir, strerror(errno));
 815                         if (rep) {
 816                                 *rep = 1;
 817                         }
 818                 }
 819                 return 0;
 820         } else {
 821                 if (n == 0) {
 822                         return 0;
 823                 }
 824
 825                 strncpy(s, namelist[0]->d_name, 255);
 826                 s[255] = '\0';
 827
 828 #ifdef HAVE_OPENMP
 829 #pragma omp parallel for schedule(dynamic,10)
 830 #endif /* HAVE_OPENMP */
 831                 for (i = 0; i < n; i++) {
 832                         free(namelist[i]);
 833                 }
 834                 free(namelist);
 835
 836                 return 1;
 837         }
 838 }
 839
 840 static int open_sysfs_sensor(const char *dir, const char *dev, const char *type, int n,
 841                 int *divisor, char *devtype)
 842 {
 843         char path[256];
 844         char buf[256];
 845         int fd;
 846         int divfd;
 847         struct stat st;
 848
 849         memset(buf, 0, sizeof(buf));
 850
 851         /* if device is NULL or *, get first */
 852         if (dev == NULL || strcmp(dev, "*") == 0) {
 853                 static int rep = 0;
 854
 855                 if (!get_first_file_in_a_directory(dir, buf, &rep)) {
 856                         return -1;
 857                 }
 858                 dev = buf;
 859         }
 860
 861         if (strcmp(dir, "/sys/class/hwmon/") == 0) {
 862                 if (*buf) {
 863                         /* buf holds result from get_first_file_in_a_directory() above,
 864                          * e.g. "hwmon0" -- append "/device" */
 865                         strcat(buf, "/device");
 866                 } else {
 867                         /* dev holds device number N as a string,
 868                          * e.g. "0", -- convert to "hwmon0/device" */
 869                         sprintf(buf, "hwmon%s/device", dev);
 870                         dev = buf;
 871                 }
 872         }
 873
 874         /* At least the acpitz hwmon doesn't have a 'device' subdir,
 875          * so check it's existence and strip it from buf otherwise. */
 876         snprintf(path, 255, "%s%s", dir, dev);
 877         if (stat(path, &st)) {
 878                 buf[strlen(buf) - 7] = 0;
 879         }
 880
 881         /* change vol to in, tempf to temp */
 882         if (strcmp(type, "vol") == 0) {
 883                 type = "in";
 884         } else if (strcmp(type, "tempf") == 0) {
 885                 type = "temp";
 886         }
 887
 888         snprintf(path, 255, "%s%s/%s%d_input", dir, dev, type, n);
 889         strncpy(devtype, path, 255);
 890
 891         /* open file */
 892         fd = open(path, O_RDONLY);
 893         if (fd < 0) {
 894                 CRIT_ERR(NULL, NULL, "can't open '%s': %s\nplease check your device or remove this "
 895                         "var from "PACKAGE_NAME, path, strerror(errno));
 896         }
 897
 898         if (strcmp(type, "in") == 0 || strcmp(type, "temp") == 0
 899                         || strcmp(type, "tempf") == 0) {
 900                 *divisor = 1;
 901         } else {
 902                 *divisor = 0;
 903         }
 904         /* fan does not use *_div as a read divisor */
 905         if (strcmp("fan", type) == 0) {
 906                 return fd;
 907         }
 908
 909         /* test if *_div file exist, open it and use it as divisor */
 910         if (strcmp(type, "tempf") == 0) {
 911                 snprintf(path, 255, "%s%s/%s%d_div", dir, "one", "two", n);
 912         } else {
 913                 snprintf(path, 255, "%s%s/%s%d_div", dir, dev, type, n);
 914         }
 915
 916         divfd = open(path, O_RDONLY);
 917         if (divfd > 0) {
 918                 /* read integer */
 919                 char divbuf[64];
 920                 int divn;
 921
 922                 divn = read(divfd, divbuf, 63);
 923                 /* should read until n == 0 but I doubt that kernel will give these
 924                  * in multiple pieces. :) */
 925                 if (divn < 0) {
 926                         NORM_ERR("open_sysfs_sensor(): can't read from sysfs");
 927                 } else {
 928                         divbuf[divn] = '\0';
 929                         *divisor = atoi(divbuf);
 930                 }
 931                 close(divfd);
 932         }
 933
 934         return fd;
 935 }
 936
 937 static double get_sysfs_info(int *fd, int divisor, char *devtype, char *type)
 938 {
 939         int val = 0;
 940
 941         if (*fd <= 0) {
 942                 return 0;
 943         }
 944
 945         lseek(*fd, 0, SEEK_SET);
 946
 947         /* read integer */
 948         {
 949                 char buf[64];
 950                 int n;
 951                 n = read(*fd, buf, 63);
 952                 /* should read until n == 0 but I doubt that kernel will give these
 953                  * in multiple pieces. :) */
 954                 if (n < 0) {
 955                         NORM_ERR("get_sysfs_info(): read from %s failed\n", devtype);
 956                 } else {
 957                         buf[n] = '\0';
 958                         val = atoi(buf);
 959                 }
 960         }
 961
 962         close(*fd);
 963         /* open file */
 964         *fd = open(devtype, O_RDONLY);
 965         if (*fd < 0) {
 966                 NORM_ERR("can't open '%s': %s", devtype, strerror(errno));
 967         }
 968
 969         /* My dirty hack for computing CPU value
 970          * Filedil, from forums.gentoo.org */
 971         /* if (strstr(devtype, "temp1_input") != NULL) {
 972                 return -15.096 + 1.4893 * (val / 1000.0);
 973         } */
 974
 975         /* divide voltage and temperature by 1000 */
 976         /* or if any other divisor is given, use that */
 977         if (strcmp(type, "tempf") == 0) {
 978                 if (divisor > 1) {
 979                         return ((val / divisor + 40) * 9.0 / 5) - 40;
 980                 } else if (divisor) {
 981                         return ((val / 1000.0 + 40) * 9.0 / 5) - 40;
 982                 } else {
 983                         return ((val + 40) * 9.0 / 5) - 40;
 984                 }
 985         } else {
 986                 if (divisor > 1) {
 987                         return val / divisor;
 988                 } else if (divisor) {
 989                         return val / 1000.0;
 990                 } else {
 991                         return val;
 992                 }
 993         }
 994 }
 995
 996 #define HWMON_RESET() {\
 997                 buf1[0] = 0; \
 998                 factor = 1.0; \
 999                 offset = 0.0; }
1000
1001 static void parse_sysfs_sensor(struct text_object *obj, const char *arg, const char *path, const char *type)
1002 {
1003         char buf1[64], buf2[64];
1004         float factor, offset;
1005         int n, found = 0;
1006
1007         if (sscanf(arg, "%63s %d %f %f", buf2, &n, &factor, &offset) == 4) found = 1; else HWMON_RESET();
1008         if (!found && sscanf(arg, "%63s %63s %d %f %f", buf1, buf2, &n, &factor, &offset) == 5) found = 1; else if (!found) HWMON_RESET();
1009         if (!found && sscanf(arg, "%63s %63s %d", buf1, buf2, &n) == 3) found = 1; else if (!found) HWMON_RESET();
1010         if (!found && sscanf(arg, "%63s %d", buf2, &n) == 2) found = 1; else if (!found) HWMON_RESET();
1011
1012         if (!found) {
1013                 NORM_ERR("i2c failed to parse arguments");
1014                 obj->type = OBJ_text;
1015                 return;
1016         }
1017         DBGP("parsed %s args: '%s' '%s' %d %f %f\n", type, buf1, buf2, n, factor, offset);
1018         obj->data.sysfs.fd = open_sysfs_sensor(path, (*buf1) ? buf1 : 0, buf2, n,
1019                         &obj->data.sysfs.arg, obj->data.sysfs.devtype);
1020         strncpy(obj->data.sysfs.type, buf2, 63);
1021         obj->data.sysfs.factor = factor;
1022         obj->data.sysfs.offset = offset;
1023 }
1024
1025 #define PARSER_GENERATOR(name, path)                                \
1026 void parse_##name##_sensor(struct text_object *obj, const char *arg) \
1027 {                                                                   \
1028         parse_sysfs_sensor(obj, arg, path, #name);           \
1029 }
1030
1031 PARSER_GENERATOR(i2c, "/sys/bus/i2c/devices/")
1032 PARSER_GENERATOR(hwmon, "/sys/class/hwmon/")
1033 PARSER_GENERATOR(platform, "/sys/bus/platform/devices/")
1034
1035 void print_sysfs_sensor(struct text_object *obj, char *p, int p_max_size)
1036 {
1037         double r;
1038
1039         r = get_sysfs_info(&obj->data.sysfs.fd, obj->data.sysfs.arg,
1040                         obj->data.sysfs.devtype, obj->data.sysfs.type);
1041
1042         r = r * obj->data.sysfs.factor + obj->data.sysfs.offset;
1043
1044         if (!strncmp(obj->data.sysfs.type, "temp", 4)) {
1045                 temp_print(p, p_max_size, r, TEMP_CELSIUS);
1046         } else if (r >= 100.0 || r == 0) {
1047                 snprintf(p, p_max_size, "%d", (int) r);
1048         } else {
1049                 snprintf(p, p_max_size, "%.1f", r);
1050         }
1051 }
1052
1053 /* Prior to kernel version 2.6.12, the CPU fan speed was available in
1054  * ADT746X_FAN_OLD, whereas later kernel versions provide this information in
1055  * ADT746X_FAN. */
1056 #define ADT746X_FAN "/sys/devices/temperatures/sensor1_fan_speed"
1057 #define ADT746X_FAN_OLD "/sys/devices/temperatures/cpu_fan_speed"
1058
1059 void get_adt746x_fan(char *p_client_buffer, size_t client_buffer_size)
1060 {
1061         static int rep = 0;
1062         char adt746x_fan_state[64];
1063         FILE *fp;
1064
1065         if (!p_client_buffer || client_buffer_size <= 0) {
1066                 return;
1067         }
1068
1069         if ((fp = open_file(ADT746X_FAN, &rep)) == NULL
1070                         && (fp = open_file(ADT746X_FAN_OLD, &rep)) == NULL) {
1071                 sprintf(adt746x_fan_state, "adt746x not found");
1072         } else {
1073                 fgets(adt746x_fan_state, sizeof(adt746x_fan_state), fp);
1074                 adt746x_fan_state[strlen(adt746x_fan_state) - 1] = 0;
1075                 fclose(fp);
1076         }
1077
1078         snprintf(p_client_buffer, client_buffer_size, "%s", adt746x_fan_state);
1079 }
1080
1081 /* Prior to kernel version 2.6.12, the CPU temperature was found in
1082  * ADT746X_CPU_OLD, whereas later kernel versions provide this information in
1083  * ADT746X_CPU. */
1084 #define ADT746X_CPU "/sys/devices/temperatures/sensor1_temperature"
1085 #define ADT746X_CPU_OLD "/sys/devices/temperatures/cpu_temperature"
1086
1087 void get_adt746x_cpu(char *p_client_buffer, size_t client_buffer_size)
1088 {
1089         static int rep = 0;
1090         char adt746x_cpu_state[64];
1091         FILE *fp;
1092
1093         if (!p_client_buffer || client_buffer_size <= 0) {
1094                 return;
1095         }
1096
1097         if ((fp = open_file(ADT746X_CPU, &rep)) == NULL
1098                         && (fp = open_file(ADT746X_CPU_OLD, &rep)) == NULL) {
1099                 sprintf(adt746x_cpu_state, "adt746x not found");
1100         } else {
1101                 fscanf(fp, "%2s", adt746x_cpu_state);
1102                 fclose(fp);
1103         }
1104
1105         snprintf(p_client_buffer, client_buffer_size, "%s", adt746x_cpu_state);
1106 }
1107
1108 #define CPUFREQ_PREFIX "/sys/devices/system/cpu"
1109 #define CPUFREQ_POSTFIX "cpufreq/scaling_cur_freq"
1110
1111 /* return system frequency in MHz (use divisor=1) or GHz (use divisor=1000) */
1112 char get_freq(char *p_client_buffer, size_t client_buffer_size,
1113                 const char *p_format, int divisor, unsigned int cpu)
1114 {
1115         FILE *f;
1116         static int rep = 0;
1117         char frequency[32];
1118         char s[256];
1119         double freq = 0;
1120
1121         if (!p_client_buffer || client_buffer_size <= 0 || !p_format
1122                         || divisor <= 0) {
1123                 return 0;
1124         }
1125
1126         if (!prefer_proc) {
1127                 char current_freq_file[128];
1128
1129                 snprintf(current_freq_file, 127, "%s/cpu%d/%s", CPUFREQ_PREFIX, cpu - 1,
1130                         CPUFREQ_POSTFIX);
1131                 f = fopen(current_freq_file, "r");
1132                 if (f) {
1133                         /* if there's a cpufreq /sys node, read the current frequency from
1134                          * this node and divide by 1000 to get Mhz. */
1135                         if (fgets(s, sizeof(s), f)) {
1136                                 s[strlen(s) - 1] = '\0';
1137                                 freq = strtod(s, NULL);
1138                         }
1139                         fclose(f);
1140                         snprintf(p_client_buffer, client_buffer_size, p_format,
1141                                 (freq / 1000) / divisor);
1142                         return 1;
1143                 }
1144         }
1145
1146         // open the CPU information file
1147         f = open_file("/proc/cpuinfo", &rep);
1148         if (!f) {
1149                 perror(PACKAGE_NAME": Failed to access '/proc/cpuinfo' at get_freq()");
1150                 return 0;
1151         }
1152
1153         // read the file
1154         while (fgets(s, sizeof(s), f) != NULL) {
1155
1156 #if defined(__i386) || defined(__x86_64)
1157                 // and search for the cpu mhz
1158                 if (strncmp(s, "cpu MHz", 7) == 0 && cpu == 0) {
1159 #else
1160 #if defined(__alpha)
1161                 // different on alpha
1162                 if (strncmp(s, "cycle frequency [Hz]", 20) == 0 && cpu == 0) {
1163 #else
1164                 // this is different on ppc for some reason
1165                 if (strncmp(s, "clock", 5) == 0 && cpu == 0) {
1166 #endif // defined(__alpha)
1167 #endif // defined(__i386) || defined(__x86_64)
1168
1169                         // copy just the number
1170                         strcpy(frequency, strchr(s, ':') + 2);
1171 #if defined(__alpha)
1172                         // strip " est.\n"
1173                         frequency[strlen(frequency) - 6] = '\0';
1174                         // kernel reports in Hz
1175                         freq = strtod(frequency, NULL) / 1000000;
1176 #else
1177                         // strip \n
1178                         frequency[strlen(frequency) - 1] = '\0';
1179                         freq = strtod(frequency, NULL);
1180 #endif
1181                         break;
1182                 }
1183                 if (strncmp(s, "processor", 9) == 0) {
1184                         cpu--;
1185                         continue;
1186                 }
1187         }
1188
1189         fclose(f);
1190         snprintf(p_client_buffer, client_buffer_size, p_format,
1191                 (float) freq / divisor);
1192         return 1;
1193 }
1194
1195 #define CPUFREQ_VOLTAGE "cpufreq/scaling_voltages"
1196
1197 /* /sys/devices/system/cpu/cpu0/cpufreq/scaling_voltages looks something
1198  * like this:
1199 # frequency voltage
1200 1800000 1340
1201 1600000 1292
1202 1400000 1100
1203 1200000 988
1204 1000000 1116
1205 800000 1004
1206 600000 988
1207  * Peter Tarjan (ptarjan@citromail.hu) */
1208
1209 /* return cpu voltage in mV (use divisor=1) or V (use divisor=1000) */
1210 char get_voltage(char *p_client_buffer, size_t client_buffer_size,
1211                 const char *p_format, int divisor, unsigned int cpu)
1212 {
1213         FILE *f;
1214         char s[256];
1215         int freq = 0;
1216         int voltage = 0;
1217         char current_freq_file[128];
1218         int freq_comp = 0;
1219
1220         /* build the voltage file name */
1221         cpu--;
1222         snprintf(current_freq_file, 127, "%s/cpu%d/%s", CPUFREQ_PREFIX, cpu,
1223                 CPUFREQ_POSTFIX);
1224
1225         if (!p_client_buffer || client_buffer_size <= 0 || !p_format
1226                         || divisor <= 0) {
1227                 return 0;
1228         }
1229
1230         /* read the current cpu frequency from the /sys node */
1231         f = fopen(current_freq_file, "r");
1232         if (f) {
1233                 if (fgets(s, sizeof(s), f)) {
1234                         s[strlen(s) - 1] = '\0';
1235                         freq = strtod(s, NULL);
1236                 }
1237                 fclose(f);
1238         } else {
1239                 fprintf(stderr, PACKAGE_NAME": Failed to access '%s' at ", current_freq_file);
1240                 perror("get_voltage()");
1241                 if (f) {
1242                         fclose(f);
1243                 }
1244                 return 0;
1245         }
1246
1247         snprintf(current_freq_file, 127, "%s/cpu%d/%s", CPUFREQ_PREFIX, cpu,
1248                 CPUFREQ_VOLTAGE);
1249
1250         /* use the current cpu frequency to find the corresponding voltage */
1251         f = fopen(current_freq_file, "r");
1252
1253         if (f) {
1254                 while (!feof(f)) {
1255                         char line[256];
1256
1257                         if (fgets(line, 255, f) == NULL) {
1258                                 break;
1259                         }
1260                         sscanf(line, "%d %d", &freq_comp, &voltage);
1261                         if (freq_comp == freq) {
1262                                 break;
1263                         }
1264                 }
1265                 fclose(f);
1266         } else {
1267                 fprintf(stderr, PACKAGE_NAME": Failed to access '%s' at ", current_freq_file);
1268                 perror("get_voltage()");
1269                 if (f) {
1270                         fclose(f);
1271                 }
1272                 return 0;
1273         }
1274         snprintf(p_client_buffer, client_buffer_size, p_format,
1275                 (float) voltage / divisor);
1276         return 1;
1277 }
1278
1279 #define ACPI_FAN_DIR "/proc/acpi/fan/"
1280
1281 void get_acpi_fan(char *p_client_buffer, size_t client_buffer_size)
1282 {
1283         static int rep = 0;
1284         char buf[256];
1285         char buf2[256];
1286         FILE *fp;
1287
1288         if (!p_client_buffer || client_buffer_size <= 0) {
1289                 return;
1290         }
1291
1292         /* yeah, slow... :/ */
1293         if (!get_first_file_in_a_directory(ACPI_FAN_DIR, buf, &rep)) {
1294                 snprintf(p_client_buffer, client_buffer_size, "no fans?");
1295                 return;
1296         }
1297
1298         snprintf(buf2, sizeof(buf2), "%s%s/state", ACPI_FAN_DIR, buf);
1299
1300         fp = open_file(buf2, &rep);
1301         if (!fp) {
1302                 snprintf(p_client_buffer, client_buffer_size,
1303                         "can't open fan's state file");
1304                 return;
1305         }
1306         memset(buf, 0, sizeof(buf));
1307         fscanf(fp, "%*s %99s", buf);
1308         fclose(fp);
1309
1310         snprintf(p_client_buffer, client_buffer_size, "%s", buf);
1311 }
1312
1313 #define SYSFS_AC_ADAPTER_DIR "/sys/class/power_supply/AC"
1314 #define ACPI_AC_ADAPTER_DIR "/proc/acpi/ac_adapter/"
1315 /* Linux 2.6.25 onwards ac adapter info is in
1316    /sys/class/power_supply/AC/
1317    On my system I get the following.
1318      /sys/class/power_supply/AC/uevent:
1319      PHYSDEVPATH=/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/PNP0C09:00/ACPI0003:00
1320      PHYSDEVBUS=acpi
1321      PHYSDEVDRIVER=ac
1322      POWER_SUPPLY_NAME=AC
1323      POWER_SUPPLY_TYPE=Mains
1324      POWER_SUPPLY_ONLINE=1
1325 */
1326
1327 void get_acpi_ac_adapter(char *p_client_buffer, size_t client_buffer_size)
1328 {
1329         static int rep = 0;
1330
1331         char buf[256];
1332         char buf2[256];
1333         FILE *fp;
1334
1335         if (!p_client_buffer || client_buffer_size <= 0) {
1336                 return;
1337         }
1338
1339         snprintf(buf2, sizeof(buf2), "%s/uevent", SYSFS_AC_ADAPTER_DIR);
1340         fp = open_file(buf2, &rep);
1341         if (fp) {
1342                 /* sysfs processing */
1343                 while (!feof(fp)) {
1344                         if (fgets(buf, sizeof(buf), fp) == NULL)
1345                                 break;
1346
1347                         if (strncmp(buf, "POWER_SUPPLY_ONLINE=", 20) == 0) {
1348                                 int online = 0;
1349                                 sscanf(buf, "POWER_SUPPLY_ONLINE=%d", &online);
1350                                 snprintf(p_client_buffer, client_buffer_size,
1351                                          "%s-line", (online ? "on" : "off"));
1352                                 break;
1353                         }
1354                 }
1355                 fclose(fp);
1356         } else {
1357                 /* yeah, slow... :/ */
1358                 if (!get_first_file_in_a_directory(ACPI_AC_ADAPTER_DIR, buf, &rep)) {
1359                         snprintf(p_client_buffer, client_buffer_size, "no ac_adapters?");
1360                         return;
1361                 }
1362
1363                 snprintf(buf2, sizeof(buf2), "%s%s/state", ACPI_AC_ADAPTER_DIR, buf);
1364
1365                 fp = open_file(buf2, &rep);
1366                 if (!fp) {
1367                         snprintf(p_client_buffer, client_buffer_size,
1368                                  "No ac adapter found.... where is it?");
1369                         return;
1370                 }
1371                 memset(buf, 0, sizeof(buf));
1372                 fscanf(fp, "%*s %99s", buf);
1373                 fclose(fp);
1374
1375                 snprintf(p_client_buffer, client_buffer_size, "%s", buf);
1376         }
1377 }
1378
1379 /*
1380 /proc/acpi/thermal_zone/THRM/cooling_mode
1381 cooling mode:            active
1382 /proc/acpi/thermal_zone/THRM/polling_frequency
1383 <polling disabled>
1384 /proc/acpi/thermal_zone/THRM/state
1385 state:                   ok
1386 /proc/acpi/thermal_zone/THRM/temperature
1387 temperature:             45 C
1388 /proc/acpi/thermal_zone/THRM/trip_points
1389 critical (S5):           73 C
1390 passive:                 73 C: tc1=4 tc2=3 tsp=40 devices=0xcdf6e6c0
1391 */
1392
1393 #define ACPI_THERMAL_DIR "/proc/acpi/thermal_zone/"
1394 #define ACPI_THERMAL_FORMAT "/proc/acpi/thermal_zone/%s/temperature"
1395
1396 int open_acpi_temperature(const char *name)
1397 {
1398         char path[256];
1399         char buf[256];
1400         int fd;
1401
1402         if (name == NULL || strcmp(name, "*") == 0) {
1403                 static int rep = 0;
1404
1405                 if (!get_first_file_in_a_directory(ACPI_THERMAL_DIR, buf, &rep)) {
1406                         return -1;
1407                 }
1408                 name = buf;
1409         }
1410
1411         snprintf(path, 255, ACPI_THERMAL_FORMAT, name);
1412
1413         fd = open(path, O_RDONLY);
1414         if (fd < 0) {
1415                 NORM_ERR("can't open '%s': %s", path, strerror(errno));
1416         }
1417
1418         return fd;
1419 }
1420
1421 static double last_acpi_temp;
1422 static double last_acpi_temp_time;
1423
1424 double get_acpi_temperature(int fd)
1425 {
1426         if (fd <= 0) {
1427                 return 0;
1428         }
1429
1430         /* don't update acpi temperature too often */
1431         if (current_update_time - last_acpi_temp_time < 11.32) {
1432                 return last_acpi_temp;
1433         }
1434         last_acpi_temp_time = current_update_time;
1435
1436         /* seek to beginning */
1437         lseek(fd, 0, SEEK_SET);
1438
1439         /* read */
1440         {
1441                 char buf[256];
1442                 int n;
1443
1444                 n = read(fd, buf, 255);
1445                 if (n < 0) {
1446                         NORM_ERR("can't read fd %d: %s", fd, strerror(errno));
1447                 } else {
1448                         buf[n] = '\0';
1449                         sscanf(buf, "temperature: %lf", &last_acpi_temp);
1450                 }
1451         }
1452
1453         return last_acpi_temp;
1454 }
1455
1456 /*
1457 hipo@lepakko hipo $ cat /proc/acpi/battery/BAT1/info
1458 present:                 yes
1459 design capacity:         4400 mAh
1460 last full capacity:      4064 mAh
1461 battery technology:      rechargeable
1462 design voltage:          14800 mV
1463 design capacity warning: 300 mAh
1464 design capacity low:     200 mAh
1465 capacity granularity 1:  32 mAh
1466 capacity granularity 2:  32 mAh
1467 model number:            02KT
1468 serial number:           16922
1469 battery type:            LION
1470 OEM info:                SANYO
1471 */
1472
1473 /*
1474 hipo@lepakko conky $ cat /proc/acpi/battery/BAT1/state
1475 present:                 yes
1476 capacity state:          ok
1477 charging state:          unknown
1478 present rate:            0 mA
1479 remaining capacity:      4064 mAh
1480 present voltage:         16608 mV
1481 */
1482
1483 /*
1484 2213<@jupet�kellari��> jupet@lagi-unstable:~$ cat /proc/apm
1485 2213<@jupet�kellari��> 1.16 1.2 0x03 0x01 0xff 0x10 -1% -1 ?
1486 2213<@jupet�kellari��> (-1 ollee ei akkua kiinni, koska akku on p�yd�ll�)
1487 2214<@jupet�kellari��> jupet@lagi-unstable:~$ cat /proc/apm
1488 2214<@jupet�kellari��> 1.16 1.2 0x03 0x01 0x03 0x09 98% -1 ?
1489
1490 2238<@jupet�kellari��> 1.16 1.2 0x03 0x00 0x00 0x01 100% -1 ? ilman verkkovirtaa
1491 2239<@jupet�kellari��> 1.16 1.2 0x03 0x01 0x00 0x01 99% -1 ? verkkovirralla
1492
1493 2240<@jupet�kellari��> 1.16 1.2 0x03 0x01 0x03 0x09 100% -1 ? verkkovirralla ja monitori p��ll�
1494 2241<@jupet�kellari��> 1.16 1.2 0x03 0x00 0x00 0x01 99% -1 ? monitori p��ll� mutta ilman verkkovirtaa
1495 */
1496
1497 /* Kapil Hari Paranjape <kapil@imsc.res.in>
1498   Linux 2.6.24 onwards battery info is in
1499   /sys/class/power_supply/BAT0/
1500   On my system I get the following.
1501         /sys/class/power_supply/BAT0/uevent:
1502         PHYSDEVPATH=/devices/LNXSYSTM:00/device:00/PNP0A03:00/device:01/PNP0C09:00/PNP0C0A:00
1503         PHYSDEVBUS=acpi
1504         PHYSDEVDRIVER=battery
1505         POWER_SUPPLY_NAME=BAT0
1506         POWER_SUPPLY_TYPE=Battery
1507         POWER_SUPPLY_STATUS=Discharging
1508         POWER_SUPPLY_PRESENT=1
1509         POWER_SUPPLY_TECHNOLOGY=Li-ion
1510         POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000
1511         POWER_SUPPLY_VOLTAGE_NOW=10780000
1512         POWER_SUPPLY_CURRENT_NOW=13970000
1513         POWER_SUPPLY_ENERGY_FULL_DESIGN=47510000
1514         POWER_SUPPLY_ENERGY_FULL=27370000
1515         POWER_SUPPLY_ENERGY_NOW=11810000
1516         POWER_SUPPLY_MODEL_NAME=IBM-92P1060
1517         POWER_SUPPLY_MANUFACTURER=Panasonic
1518   On some systems POWER_SUPPLY_ENERGY_* is replaced by POWER_SUPPLY_CHARGE_*
1519 */
1520
1521 #define SYSFS_BATTERY_BASE_PATH "/sys/class/power_supply"
1522 #define ACPI_BATTERY_BASE_PATH "/proc/acpi/battery"
1523 #define APM_PATH "/proc/apm"
1524 #define MAX_BATTERY_COUNT 4
1525
1526 static FILE *sysfs_bat_fp[MAX_BATTERY_COUNT] = { NULL, NULL, NULL, NULL };
1527 static FILE *acpi_bat_fp[MAX_BATTERY_COUNT] = { NULL, NULL, NULL, NULL };
1528 static FILE *apm_bat_fp[MAX_BATTERY_COUNT] = { NULL, NULL, NULL, NULL };
1529
1530 static int batteries_initialized = 0;
1531 static char batteries[MAX_BATTERY_COUNT][32];
1532
1533 static int acpi_last_full[MAX_BATTERY_COUNT];
1534 static int acpi_design_capacity[MAX_BATTERY_COUNT];
1535
1536 /* e.g. "charging 75%" */
1537 static char last_battery_str[MAX_BATTERY_COUNT][64];
1538 /* e.g. "3h 15m" */
1539 static char last_battery_time_str[MAX_BATTERY_COUNT][64];
1540
1541 static double last_battery_time[MAX_BATTERY_COUNT];
1542
1543 static int last_battery_perct[MAX_BATTERY_COUNT];
1544 static double last_battery_perct_time[MAX_BATTERY_COUNT];
1545
1546 void init_batteries(void)
1547 {
1548         int idx;
1549
1550         if (batteries_initialized) {
1551                 return;
1552         }
1553 #ifdef HAVE_OPENMP
1554 #pragma omp parallel for schedule(dynamic,10)
1555 #endif /* HAVE_OPENMP */
1556         for (idx = 0; idx < MAX_BATTERY_COUNT; idx++) {
1557                 batteries[idx][0] = '\0';
1558         }
1559         batteries_initialized = 1;
1560 }
1561
1562 int get_battery_idx(const char *bat)
1563 {
1564         int idx;
1565
1566         for (idx = 0; idx < MAX_BATTERY_COUNT; idx++) {
1567                 if (!strlen(batteries[idx]) || !strcmp(batteries[idx], bat)) {
1568                         break;
1569                 }
1570         }
1571
1572         /* if not found, enter a new entry */
1573         if (!strlen(batteries[idx])) {
1574                 snprintf(batteries[idx], 31, "%s", bat);
1575         }
1576
1577         return idx;
1578 }
1579
1580 void set_return_value(char *buffer, unsigned int n, int item, int idx);
1581
1582 void get_battery_stuff(char *buffer, unsigned int n, const char *bat, int item)
1583 {
1584         static int idx, rep = 0, rep1 = 0, rep2 = 0;
1585         char acpi_path[128];
1586         char sysfs_path[128];
1587
1588         snprintf(acpi_path, 127, ACPI_BATTERY_BASE_PATH "/%s/state", bat);
1589         snprintf(sysfs_path, 127, SYSFS_BATTERY_BASE_PATH "/%s/uevent", bat);
1590
1591         init_batteries();
1592
1593         idx = get_battery_idx(bat);
1594
1595         /* don't update battery too often */
1596         if (current_update_time - last_battery_time[idx] < 29.5) {
1597                 set_return_value(buffer, n, item, idx);
1598                 return;
1599         }
1600
1601         last_battery_time[idx] = current_update_time;
1602
1603         memset(last_battery_str[idx], 0, sizeof(last_battery_str[idx]));
1604         memset(last_battery_time_str[idx], 0, sizeof(last_battery_time_str[idx]));
1605
1606         /* first try SYSFS if that fails try ACPI */
1607
1608         if (sysfs_bat_fp[idx] == NULL && acpi_bat_fp[idx] == NULL && apm_bat_fp[idx] == NULL) {
1609                 sysfs_bat_fp[idx] = open_file(sysfs_path, &rep);
1610         }
1611
1612         if (sysfs_bat_fp[idx] == NULL && acpi_bat_fp[idx] == NULL && apm_bat_fp[idx] == NULL) {
1613                 acpi_bat_fp[idx] = open_file(acpi_path, &rep1);
1614         }
1615
1616         if (sysfs_bat_fp[idx] != NULL) {
1617                 /* SYSFS */
1618                 int present_rate = -1;
1619                 int remaining_capacity = -1;
1620                 char charging_state[64];
1621                 char present[4];
1622
1623                 strcpy(charging_state, "unknown");
1624
1625                 while (!feof(sysfs_bat_fp[idx])) {
1626                         char buf[256];
1627                         if (fgets(buf, 256, sysfs_bat_fp[idx]) == NULL)
1628                                 break;
1629
1630                         /* let's just hope units are ok */
1631                         if (strncmp (buf, "POWER_SUPPLY_PRESENT=1", 22) == 0)
1632                                 strcpy(present, "yes");
1633                         else if (strncmp (buf, "POWER_SUPPLY_PRESENT=0", 22) == 0)
1634                                 strcpy(present, "no");
1635                         else if (strncmp (buf, "POWER_SUPPLY_STATUS=", 20) == 0)
1636                                 sscanf(buf, "POWER_SUPPLY_STATUS=%63s", charging_state);
1637                         /* present_rate is not the same as the
1638                         current flowing now but it is the same value
1639                         which was used in the past. so we continue
1640                         the tradition! */
1641                         else if (strncmp(buf, "POWER_SUPPLY_CURRENT_NOW=", 25) == 0)
1642                                 sscanf(buf, "POWER_SUPPLY_CURRENT_NOW=%d", &present_rate);
1643                         else if (strncmp(buf, "POWER_SUPPLY_ENERGY_NOW=", 24) == 0)
1644                                 sscanf(buf, "POWER_SUPPLY_ENERGY_NOW=%d", &remaining_capacity);
1645                         else if (strncmp(buf, "POWER_SUPPLY_ENERGY_FULL=", 25) == 0)
1646                                 sscanf(buf, "POWER_SUPPLY_ENERGY_FULL=%d", &acpi_last_full[idx]);
1647                         else if (strncmp(buf, "POWER_SUPPLY_CHARGE_NOW=", 24) == 0)
1648                                 sscanf(buf, "POWER_SUPPLY_CHARGE_NOW=%d", &remaining_capacity);
1649                         else if (strncmp(buf, "POWER_SUPPLY_CHARGE_FULL=", 25) == 0)
1650                                 sscanf(buf, "POWER_SUPPLY_CHARGE_FULL=%d", &acpi_last_full[idx]);
1651                 }
1652
1653                 fclose(sysfs_bat_fp[idx]);
1654                 sysfs_bat_fp[idx] = NULL;
1655
1656                 /* Hellf[i]re notes that remaining capacity can exceed acpi_last_full */
1657                 if (remaining_capacity > acpi_last_full[idx])
1658                         acpi_last_full[idx] = remaining_capacity;  /* normalize to 100% */
1659
1660                 /* not present */
1661                 if (strcmp(present, "No") == 0) {
1662                         strncpy(last_battery_str[idx], "not present", 64);
1663                 }
1664                 /* charging */
1665                 else if (strcmp(charging_state, "Charging") == 0) {
1666                         if (acpi_last_full[idx] != 0 && present_rate > 0) {
1667                                 /* e.g. charging 75% */
1668                                 snprintf(last_battery_str[idx], sizeof(last_battery_str[idx])-1, "charging %i%%",
1669                                         (int) (((float) remaining_capacity / acpi_last_full[idx]) * 100 ));
1670                                 /* e.g. 2h 37m */
1671                                 format_seconds(last_battery_time_str[idx], sizeof(last_battery_time_str[idx])-1,
1672                                               (long) (((float)(acpi_last_full[idx] - remaining_capacity) / present_rate) * 3600));
1673                         } else if (acpi_last_full[idx] != 0 && present_rate <= 0) {
1674                                 snprintf(last_battery_str[idx], sizeof(last_battery_str[idx])-1, "charging %d%%",
1675                                         (int) (((float)remaining_capacity / acpi_last_full[idx]) * 100));
1676                                 snprintf(last_battery_time_str[idx],
1677                                         sizeof(last_battery_time_str[idx]) - 1, "unknown");
1678                         } else {
1679                                 strncpy(last_battery_str[idx], "charging", sizeof(last_battery_str[idx])-1);
1680                                 snprintf(last_battery_time_str[idx],
1681                                         sizeof(last_battery_time_str[idx]) - 1, "unknown");
1682                         }
1683                 }
1684                 /* discharging */
1685                 else if (strncmp(charging_state, "Discharging", 64) == 0) {
1686                         if (present_rate > 0) {
1687                                 /* e.g. discharging 35% */
1688                                 snprintf(last_battery_str[idx], sizeof(last_battery_str[idx])-1, "discharging %i%%",
1689                                         (int) (((float) remaining_capacity / acpi_last_full[idx]) * 100 ));
1690                                 /* e.g. 1h 12m */
1691                                 format_seconds(last_battery_time_str[idx], sizeof(last_battery_time_str[idx])-1,
1692                                               (long) (((float) remaining_capacity / present_rate) * 3600));
1693                         } else if (present_rate == 0) { /* Thanks to Nexox for this one */
1694                                 snprintf(last_battery_str[idx], sizeof(last_battery_str[idx])-1, "full");
1695                                 snprintf(last_battery_time_str[idx],
1696                                         sizeof(last_battery_time_str[idx]) - 1, "unknown");
1697                         } else {
1698                                 snprintf(last_battery_str[idx], sizeof(last_battery_str[idx])-1,
1699                                         "discharging %d%%",
1700                                         (int) (((float)remaining_capacity / acpi_last_full[idx]) * 100));
1701                                 snprintf(last_battery_time_str[idx],
1702                                         sizeof(last_battery_time_str[idx]) - 1, "unknown");
1703                         }
1704                 }
1705                 /* charged */
1706                 /* thanks to Lukas Zapletal <lzap@seznam.cz> */
1707                 else if (strncmp(charging_state, "Charged", 64) == 0 || strncmp(charging_state, "Full", 64) == 0) {
1708                                 /* Below happens with the second battery on my X40,
1709                                  * when the second one is empty and the first one
1710                                  * being charged. */
1711                                 if (remaining_capacity == 0)
1712                                         strcpy(last_battery_str[idx], "empty");
1713                                 else
1714                                         strcpy(last_battery_str[idx], "charged");
1715                 }
1716                 /* unknown, probably full / AC */
1717                 else {
1718                         if (acpi_last_full[idx] != 0
1719                             && remaining_capacity != acpi_last_full[idx])
1720                                 snprintf(last_battery_str[idx], 64, "unknown %d%%",
1721                                         (int) (((float)remaining_capacity / acpi_last_full[idx]) * 100));
1722                         else
1723                                 strncpy(last_battery_str[idx], "AC", 64);
1724                 }
1725         } else if (acpi_bat_fp[idx] != NULL) {
1726                 /* ACPI */
1727                 int present_rate = -1;
1728                 int remaining_capacity = -1;
1729                 char charging_state[64];
1730                 char present[4];
1731
1732                 /* read last full capacity if it's zero */
1733                 if (acpi_last_full[idx] == 0) {
1734                         static int rep3 = 0;
1735                         char path[128];
1736                         FILE *fp;
1737
1738                         snprintf(path, 127, ACPI_BATTERY_BASE_PATH "/%s/info", bat);
1739                         fp = open_file(path, &rep3);
1740                         if (fp != NULL) {
1741                                 while (!feof(fp)) {
1742                                         char b[256];
1743
1744                                         if (fgets(b, 256, fp) == NULL) {
1745                                                 break;
1746                                         }
1747                                         if (sscanf(b, "last full capacity: %d",
1748                                                                 &acpi_last_full[idx]) != 0) {
1749                                                 break;
1750                                         }
1751                                 }
1752
1753                                 fclose(fp);
1754                         }
1755                 }
1756
1757                 fseek(acpi_bat_fp[idx], 0, SEEK_SET);
1758
1759                 strcpy(charging_state, "unknown");
1760
1761                 while (!feof(acpi_bat_fp[idx])) {
1762                         char buf[256];
1763
1764                         if (fgets(buf, 256, acpi_bat_fp[idx]) == NULL) {
1765                                 break;
1766                         }
1767
1768                         /* let's just hope units are ok */
1769                         if (strncmp(buf, "present:", 8) == 0) {
1770                                 sscanf(buf, "present: %4s", present);
1771                         } else if (strncmp(buf, "charging state:", 15) == 0) {
1772                                 sscanf(buf, "charging state: %63s", charging_state);
1773                         } else if (strncmp(buf, "present rate:", 13) == 0) {
1774                                 sscanf(buf, "present rate: %d", &present_rate);
1775                         } else if (strncmp(buf, "remaining capacity:", 19) == 0) {
1776                                 sscanf(buf, "remaining capacity: %d", &remaining_capacity);
1777                         }
1778                 }
1779                 /* Hellf[i]re notes that remaining capacity can exceed acpi_last_full */
1780                 if (remaining_capacity > acpi_last_full[idx]) {
1781                         /* normalize to 100% */
1782                         acpi_last_full[idx] = remaining_capacity;
1783                 }
1784
1785                 /* not present */
1786                 if (strcmp(present, "no") == 0) {
1787                         strncpy(last_battery_str[idx], "not present", 64);
1788                         /* charging */
1789                 } else if (strcmp(charging_state, "charging") == 0) {
1790                         if (acpi_last_full[idx] != 0 && present_rate > 0) {
1791                                 /* e.g. charging 75% */
1792                                 snprintf(last_battery_str[idx],
1793                                                 sizeof(last_battery_str[idx]) - 1, "charging %i%%",
1794                                                 (int) ((remaining_capacity * 100) / acpi_last_full[idx]));
1795                                 /* e.g. 2h 37m */
1796                                 format_seconds(last_battery_time_str[idx],
1797                                                 sizeof(last_battery_time_str[idx]) - 1,
1798                                                 (long) (((acpi_last_full[idx] - remaining_capacity) *
1799                                                                 3600) / present_rate));
1800                         } else if (acpi_last_full[idx] != 0 && present_rate <= 0) {
1801                                 snprintf(last_battery_str[idx],
1802                                                 sizeof(last_battery_str[idx]) - 1, "charging %d%%",
1803                                                 (int) ((remaining_capacity * 100) / acpi_last_full[idx]));
1804                                 snprintf(last_battery_time_str[idx],
1805                                                 sizeof(last_battery_time_str[idx]) - 1, "unknown");
1806                         } else {
1807                                 strncpy(last_battery_str[idx], "charging",
1808                                                 sizeof(last_battery_str[idx]) - 1);
1809                                 snprintf(last_battery_time_str[idx],
1810                                                 sizeof(last_battery_time_str[idx]) - 1, "unknown");
1811                         }
1812                         /* discharging */
1813                 } else if (strncmp(charging_state, "discharging", 64) == 0) {
1814                         if (present_rate > 0) {
1815                                 /* e.g. discharging 35% */
1816                                 snprintf(last_battery_str[idx],
1817                                                 sizeof(last_battery_str[idx]) - 1, "discharging %i%%",
1818                                                 (int) ((remaining_capacity * 100) / acpi_last_full[idx]));
1819                                 /* e.g. 1h 12m */
1820                                 format_seconds(last_battery_time_str[idx],
1821                                                 sizeof(last_battery_time_str[idx]) - 1,
1822                                                 (long) ((remaining_capacity * 3600) / present_rate));
1823                         } else if (present_rate == 0) { /* Thanks to Nexox for this one */
1824                                 snprintf(last_battery_str[idx],
1825                                                 sizeof(last_battery_str[idx]) - 1, "full");
1826                                 snprintf(last_battery_time_str[idx],
1827                                                 sizeof(last_battery_time_str[idx]) - 1, "unknown");
1828                         } else {
1829                                 snprintf(last_battery_str[idx],
1830                                                 sizeof(last_battery_str[idx]) - 1, "discharging %d%%",
1831                                                 (int) ((remaining_capacity * 100) / acpi_last_full[idx]));
1832                                 snprintf(last_battery_time_str[idx],
1833                                                 sizeof(last_battery_time_str[idx]) - 1, "unknown");
1834                         }
1835                         /* charged */
1836                 } else if (strncmp(charging_state, "charged", 64) == 0) {
1837                         /* thanks to Lukas Zapletal <lzap@seznam.cz> */
1838                         /* Below happens with the second battery on my X40,
1839                          * when the second one is empty and the first one being charged. */
1840                         if (remaining_capacity == 0) {
1841                                 strcpy(last_battery_str[idx], "empty");
1842                         } else {
1843                                 strcpy(last_battery_str[idx], "charged");
1844                         }
1845                         /* unknown, probably full / AC */
1846                 } else {
1847                         if (strncmp(charging_state, "Full", 64) == 0) {
1848                                 strncpy(last_battery_str[idx], "full", 64);
1849                         } else if (acpi_last_full[idx] != 0
1850                                         && remaining_capacity != acpi_last_full[idx]) {
1851                                 snprintf(last_battery_str[idx], 64, "unknown %d%%",
1852                                                 (int) ((remaining_capacity * 100) / acpi_last_full[idx]));
1853                         } else {
1854                                 strncpy(last_battery_str[idx], "AC", 64);
1855                         }
1856                 }
1857                 fclose(acpi_bat_fp[idx]);
1858                 acpi_bat_fp[idx] = NULL;
1859         } else {
1860                 /* APM */
1861                 if (apm_bat_fp[idx] == NULL) {
1862                         apm_bat_fp[idx] = open_file(APM_PATH, &rep2);
1863                 }
1864
1865                 if (apm_bat_fp[idx] != NULL) {
1866                         unsigned int ac, status, flag;
1867                         int life;
1868
1869                         fscanf(apm_bat_fp[idx], "%*s %*s %*x %x   %x       %x     %d%%",
1870                                 &ac, &status, &flag, &life);
1871
1872                         if (life == -1) {
1873                                 /* could check now that there is ac */
1874                                 snprintf(last_battery_str[idx], 64, "AC");
1875
1876                         /* could check that status == 3 here? */
1877                         } else if (ac && life != 100) {
1878                                 snprintf(last_battery_str[idx], 64, "charging %d%%", life);
1879                         } else {
1880                                 snprintf(last_battery_str[idx], 64, "%d%%", life);
1881                         }
1882
1883                         /* it seemed to buffer it so file must be closed (or could use
1884                          * syscalls directly but I don't feel like coding it now) */
1885                         fclose(apm_bat_fp[idx]);
1886                         apm_bat_fp[idx] = NULL;
1887                 }
1888         }
1889         set_return_value(buffer, n, item, idx);
1890 }
1891
1892 void set_return_value(char *buffer, unsigned int n, int item, int idx)
1893 {
1894         switch (item) {
1895                 case BATTERY_STATUS:
1896                         snprintf(buffer, n, "%s", last_battery_str[idx]);
1897                         break;
1898                 case BATTERY_TIME:
1899                         snprintf(buffer, n, "%s", last_battery_time_str[idx]);
1900                         break;
1901                 default:
1902                         break;
1903         }
1904 }
1905
1906 void get_battery_short_status(char *buffer, unsigned int n, const char *bat)
1907 {
1908         get_battery_stuff(buffer, n, bat, BATTERY_STATUS);
1909         if (0 == strncmp("charging", buffer, 8)) {
1910                 buffer[0] = 'C';
1911                 memmove(buffer + 1, buffer + 8, n - 8);
1912         } else if (0 == strncmp("discharging", buffer, 11)) {
1913                 buffer[0] = 'D';
1914                 memmove(buffer + 1, buffer + 11, n - 11);
1915         } else if (0 == strncmp("charged", buffer, 7)) {
1916                 buffer[0] = 'F';
1917                 memmove(buffer + 1, buffer + 7, n - 7);
1918         } else if (0 == strncmp("not present", buffer, 11)) {
1919                 buffer[0] = 'N';
1920                 memmove(buffer + 1, buffer + 11, n - 11);
1921         } else if (0 == strncmp("empty", buffer, 5)) {
1922                 buffer[0] = 'E';
1923                 memmove(buffer + 1, buffer + 5, n - 5);
1924         } else if (0 != strncmp("AC", buffer, 2)) {
1925                 buffer[0] = 'U';
1926                 memmove(buffer + 1, buffer + 11, n - 11);
1927         }
1928 }
1929
1930 int get_battery_perct(const char *bat)
1931 {
1932         static int rep = 0;
1933         int idx;
1934         char acpi_path[128];
1935         char sysfs_path[128];
1936         int remaining_capacity = -1;
1937
1938         snprintf(acpi_path, 127, ACPI_BATTERY_BASE_PATH "/%s/state", bat);
1939         snprintf(sysfs_path, 127, SYSFS_BATTERY_BASE_PATH "/%s/uevent", bat);
1940
1941         init_batteries();
1942
1943         idx = get_battery_idx(bat);
1944
1945         /* don't update battery too often */
1946         if (current_update_time - last_battery_perct_time[idx] < 30) {
1947                 return last_battery_perct[idx];
1948         }
1949         last_battery_perct_time[idx] = current_update_time;
1950
1951         /* Only check for SYSFS or ACPI */
1952
1953         if (sysfs_bat_fp[idx] == NULL && acpi_bat_fp[idx] == NULL && apm_bat_fp[idx] == NULL) {
1954                 sysfs_bat_fp[idx] = open_file(sysfs_path, &rep);
1955                 rep = 0;
1956         }
1957
1958         if (sysfs_bat_fp[idx] == NULL && acpi_bat_fp[idx] == NULL && apm_bat_fp[idx] == NULL) {
1959                 acpi_bat_fp[idx] = open_file(acpi_path, &rep);
1960         }
1961
1962         if (sysfs_bat_fp[idx] != NULL) {
1963                 /* SYSFS */
1964                 while (!feof(sysfs_bat_fp[idx])) {
1965                         char buf[256];
1966                         if (fgets(buf, 256, sysfs_bat_fp[idx]) == NULL)
1967                                 break;
1968
1969                         if (strncmp(buf, "POWER_SUPPLY_CHARGE_NOW=", 24) == 0) {
1970                                 sscanf(buf, "POWER_SUPPLY_CHARGE_NOW=%d", &remaining_capacity);
1971                         } else if (strncmp(buf, "POWER_SUPPLY_CHARGE_FULL=",25) == 0) {
1972                                 sscanf(buf, "POWER_SUPPLY_CHARGE_FULL=%d", &acpi_design_capacity[idx]);
1973                         } else if (strncmp(buf, "POWER_SUPPLY_ENERGY_NOW=", 24) == 0) {
1974                                 sscanf(buf, "POWER_SUPPLY_ENERGY_NOW=%d", &remaining_capacity);
1975                         } else if (strncmp(buf, "POWER_SUPPLY_ENERGY_FULL=",25) == 0) {
1976                                 sscanf(buf, "POWER_SUPPLY_ENERGY_FULL=%d", &acpi_design_capacity[idx]);
1977                         }
1978                 }
1979
1980                 fclose(sysfs_bat_fp[idx]);
1981                 sysfs_bat_fp[idx] = NULL;
1982
1983         } else if (acpi_bat_fp[idx] != NULL) {
1984                 /* ACPI */
1985                 /* read last full capacity if it's zero */
1986                 if (acpi_design_capacity[idx] == 0) {
1987                         static int rep2;
1988                         char path[128];
1989                         FILE *fp;
1990
1991                         snprintf(path, 127, ACPI_BATTERY_BASE_PATH "/%s/info", bat);
1992                         fp = open_file(path, &rep2);
1993                         if (fp != NULL) {
1994                                 while (!feof(fp)) {
1995                                         char b[256];
1996
1997                                         if (fgets(b, 256, fp) == NULL) {
1998                                                 break;
1999                                         }
2000                                         if (sscanf(b, "last full capacity: %d",
2001                                                                 &acpi_design_capacity[idx]) != 0) {
2002                                                 break;
2003                                         }
2004                                 }
2005                                 fclose(fp);
2006                         }
2007                 }
2008
2009                 fseek(acpi_bat_fp[idx], 0, SEEK_SET);
2010
2011                 while (!feof(acpi_bat_fp[idx])) {
2012                         char buf[256];
2013
2014                         if (fgets(buf, 256, acpi_bat_fp[idx]) == NULL) {
2015                                 break;
2016                         }
2017
2018                         if (buf[0] == 'r') {
2019                                 sscanf(buf, "remaining capacity: %d", &remaining_capacity);
2020                         }
2021                 }
2022         }
2023         if (remaining_capacity < 0) {
2024                 return 0;
2025         }
2026         /* compute the battery percentage */
2027         last_battery_perct[idx] =
2028                 (int) (((float) remaining_capacity / acpi_design_capacity[idx]) * 100);
2029         if (last_battery_perct[idx] > 100) last_battery_perct[idx] = 100;
2030         return last_battery_perct[idx];
2031 }
2032
2033 int get_battery_perct_bar(const char *bar)
2034 {
2035         int idx;
2036
2037         get_battery_perct(bar);
2038         idx = get_battery_idx(bar);
2039         return (int) (last_battery_perct[idx] * 2.56 - 1);
2040 }
2041
2042 /* On Apple powerbook and ibook:
2043 $ cat /proc/pmu/battery_0
2044 flags      : 00000013
2045 charge     : 3623
2046 max_charge : 3720
2047 current    : 388
2048 voltage    : 16787
2049 time rem.  : 900
2050 $ cat /proc/pmu/info
2051 PMU driver version     : 2
2052 PMU firmware version   : 0c
2053 AC Power               : 1
2054 Battery count          : 1
2055 */
2056
2057 /* defines as in <linux/pmu.h> */
2058 #define PMU_BATT_PRESENT                0x00000001
2059 #define PMU_BATT_CHARGING               0x00000002
2060
2061 static FILE *pmu_battery_fp;
2062 static FILE *pmu_info_fp;
2063 static char pb_battery_info[3][32];
2064 static double pb_battery_info_update;
2065
2066 #define PMU_PATH "/proc/pmu"
2067 void get_powerbook_batt_info(char *buffer, size_t n, int i)
2068 {
2069         static int rep = 0;
2070         const char *batt_path = PMU_PATH "/battery_0";
2071         const char *info_path = PMU_PATH "/info";
2072         unsigned int flags;
2073         int charge, max_charge, ac = -1;
2074         long timeval = -1;
2075
2076         /* don't update battery too often */
2077         if (current_update_time - pb_battery_info_update < 29.5) {
2078                 snprintf(buffer, n, "%s", pb_battery_info[i]);
2079                 return;
2080         }
2081         pb_battery_info_update = current_update_time;
2082
2083         if (pmu_battery_fp == NULL) {
2084                 pmu_battery_fp = open_file(batt_path, &rep);
2085                 if (pmu_battery_fp == NULL) {
2086                         return;
2087                 }
2088         }
2089
2090         if (pmu_battery_fp != NULL) {
2091                 rewind(pmu_battery_fp);
2092                 while (!feof(pmu_battery_fp)) {
2093                         char buf[32];
2094
2095                         if (fgets(buf, sizeof(buf), pmu_battery_fp) == NULL) {
2096                                 break;
2097                         }
2098
2099                         if (buf[0] == 'f') {
2100                                 sscanf(buf, "flags      : %8x", &flags);
2101                         } else if (buf[0] == 'c' && buf[1] == 'h') {
2102                                 sscanf(buf, "charge     : %d", &charge);
2103                         } else if (buf[0] == 'm') {
2104                                 sscanf(buf, "max_charge : %d", &max_charge);
2105                         } else if (buf[0] == 't') {
2106                                 sscanf(buf, "time rem.  : %ld", &timeval);
2107                         }
2108                 }
2109         }
2110         if (pmu_info_fp == NULL) {
2111                 pmu_info_fp = open_file(info_path, &rep);
2112                 if (pmu_info_fp == NULL) {
2113                         return;
2114                 }
2115         }
2116
2117         if (pmu_info_fp != NULL) {
2118                 rewind(pmu_info_fp);
2119                 while (!feof(pmu_info_fp)) {
2120                         char buf[32];
2121
2122                         if (fgets(buf, sizeof(buf), pmu_info_fp) == NULL) {
2123                                 break;
2124                         }
2125                         if (buf[0] == 'A') {
2126                                 sscanf(buf, "AC Power               : %d", &ac);
2127                         }
2128                 }
2129         }
2130         /* update status string */
2131         if ((ac && !(flags & PMU_BATT_PRESENT))) {
2132                 strncpy(pb_battery_info[PB_BATT_STATUS], "AC", sizeof(pb_battery_info[PB_BATT_STATUS]));
2133         } else if (ac && (flags & PMU_BATT_PRESENT)
2134                         && !(flags & PMU_BATT_CHARGING)) {
2135                 strncpy(pb_battery_info[PB_BATT_STATUS], "charged", sizeof(pb_battery_info[PB_BATT_STATUS]));
2136         } else if ((flags & PMU_BATT_PRESENT) && (flags & PMU_BATT_CHARGING)) {
2137                 strncpy(pb_battery_info[PB_BATT_STATUS], "charging", sizeof(pb_battery_info[PB_BATT_STATUS]));
2138         } else {
2139                 strncpy(pb_battery_info[PB_BATT_STATUS], "discharging", sizeof(pb_battery_info[PB_BATT_STATUS]));
2140         }
2141
2142         /* update percentage string */
2143         if (timeval == 0 && ac && (flags & PMU_BATT_PRESENT)
2144                         && !(flags & PMU_BATT_CHARGING)) {
2145                 snprintf(pb_battery_info[PB_BATT_PERCENT],
2146                         sizeof(pb_battery_info[PB_BATT_PERCENT]), "100%%");
2147         } else if (timeval == 0) {
2148                 snprintf(pb_battery_info[PB_BATT_PERCENT],
2149                         sizeof(pb_battery_info[PB_BATT_PERCENT]), "unknown");
2150         } else {
2151                 snprintf(pb_battery_info[PB_BATT_PERCENT],
2152                         sizeof(pb_battery_info[PB_BATT_PERCENT]), "%d%%",
2153                         (charge * 100) / max_charge);
2154         }
2155
2156         /* update time string */
2157         if (timeval == 0) {                     /* fully charged or battery not present */
2158                 snprintf(pb_battery_info[PB_BATT_TIME],
2159                         sizeof(pb_battery_info[PB_BATT_TIME]), "unknown");
2160         } else if (timeval < 60 * 60) { /* don't show secs */
2161                 format_seconds_short(pb_battery_info[PB_BATT_TIME],
2162                         sizeof(pb_battery_info[PB_BATT_TIME]), timeval);
2163         } else {
2164                 format_seconds(pb_battery_info[PB_BATT_TIME],
2165                         sizeof(pb_battery_info[PB_BATT_TIME]), timeval);
2166         }
2167
2168         snprintf(buffer, n, "%s", pb_battery_info[i]);
2169 }
2170
2171 void update_top(void)
2172 {
2173         process_find_top(info.cpu, info.memu, info.time
2174 #ifdef IOSTATS
2175                 , info.io
2176 #endif
2177                 );
2178         info.first_process = get_first_process();
2179 }
2180
2181 void update_entropy(void)
2182 {
2183         static int rep = 0;
2184         const char *entropy_avail = "/proc/sys/kernel/random/entropy_avail";
2185         const char *entropy_poolsize = "/proc/sys/kernel/random/poolsize";
2186         FILE *fp1, *fp2;
2187
2188         info.entropy.entropy_avail = 0;
2189         info.entropy.poolsize = 0;
2190
2191         if ((fp1 = open_file(entropy_avail, &rep)) == NULL) {
2192                 return;
2193         }
2194
2195         if ((fp2 = open_file(entropy_poolsize, &rep)) == NULL) {
2196                 fclose(fp1);
2197                 return;
2198         }
2199
2200         fscanf(fp1, "%u", &info.entropy.entropy_avail);
2201         fscanf(fp2, "%u", &info.entropy.poolsize);
2202
2203         fclose(fp1);
2204         fclose(fp2);
2205 }
2206
2207 const char *get_disk_protect_queue(const char *disk)
2208 {
2209         FILE *fp;
2210         char path[128];
2211         int state;
2212
2213         snprintf(path, 127, "/sys/block/%s/device/unload_heads", disk);
2214         if (access(path, F_OK)) {
2215                 snprintf(path, 127, "/sys/block/%s/queue/protect", disk);
2216         }
2217         if ((fp = fopen(path, "r")) == NULL)
2218                 return "n/a   ";
2219         if (fscanf(fp, "%d\n", &state) != 1) {
2220                 fclose(fp);
2221                 return "failed";
2222         }
2223         fclose(fp);
2224         return (state > 0) ? "frozen" : "free  ";
2225 }
2226
2227 void update_diskio(void)
2228 {
2229         FILE *fp;
2230         static int rep = 0;
2231         char buf[512], devbuf[64];
2232         unsigned int major, minor;
2233         int col_count = 0;
2234         struct diskio_stat *cur;
2235         unsigned int reads, writes;
2236         unsigned int total_reads = 0, total_writes = 0;
2237
2238         stats.current = 0;
2239         stats.current_read = 0;
2240         stats.current_write = 0;
2241
2242         if (!(fp = open_file("/proc/diskstats", &rep))) {
2243                 return;
2244         }
2245
2246         /* read reads and writes from all disks (minor = 0), including cd-roms
2247          * and floppies, and sum them up */
2248         while (fgets(buf, 512, fp)) {
2249                 col_count = sscanf(buf, "%u %u %s %*u %*u %u %*u %*u %*u %u", &major,
2250                         &minor, devbuf, &reads, &writes);
2251                 /* ignore subdevices (they have only 3 matching entries in their line)
2252                  * and virtual devices (LVM, network block devices, RAM disks, Loopback)
2253                  *
2254                  * XXX: ignore devices which are part of a SW RAID (MD_MAJOR) */
2255                 if (col_count == 5 && major != LVM_BLK_MAJOR && major != NBD_MAJOR
2256                                 && major != RAMDISK_MAJOR && major != LOOP_MAJOR) {
2257                         total_reads += reads;
2258                         total_writes += writes;
2259                 } else {
2260                         col_count = sscanf(buf, "%u %u %s %*u %u %*u %u",
2261                                 &major, &minor, devbuf, &reads, &writes);
2262                         if (col_count != 5) {
2263                                 continue;
2264                         }
2265                 }
2266                 cur = stats.next;
2267                 while (cur && strcmp(devbuf, cur->dev))
2268                         cur = cur->next;
2269
2270                 if (cur)
2271                         update_diskio_values(cur, reads, writes);
2272         }
2273         update_diskio_values(&stats, total_reads, total_writes);
2274         fclose(fp);
2275 }