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

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