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annotate toys/other/acpi.c @ 1736:5892daac85ab draft

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Switch nsenter to default y.
author Rob Landley <rob@landley.net>
date Thu, 12 Mar 2015 15:34:03 -0500
parents e85e5f3b87c2
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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0d7d6fed8141 I got tired of trying to guess how much terminal time I could get in on my phone, so here's a basic acpi.
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1 /* acpi.c - show power state
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2 *
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3 * Written by Isaac Dunham, 2013
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4 *
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5 * No standard.
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6
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7 USE_ACPI(NEWTOY(acpi, "abctV", TOYFLAG_USR|TOYFLAG_BIN))
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8
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9 config ACPI
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10 bool "acpi"
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11 default y
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12 help
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13 usage: acpi [-abctV]
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14
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15 Show status of power sources and thermal devices.
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16
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17 -a show power adapters
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18 -b show batteries
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19 -c show cooling device state
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20 -t show temperatures
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21 -V show everything
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22 */
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23
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24 #define FOR_acpi
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25 #include "toys.h"
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26
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27 GLOBALS(
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28 int ac;
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29 int bat;
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30 int therm;
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31 int cool;
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32 char *cpath;
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33 )
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34
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35 int read_int_at(int dirfd, char *name)
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36 {
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37 int fd, ret=0;
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38 FILE *fil;
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39
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40 if ((fd = openat(dirfd, name, O_RDONLY)) < 0) return -1;
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41 if (!fscanf(fil = xfdopen(fd, "r"), "%d", &ret)) perror_exit("%s", name);
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42 fclose(fil);
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43
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44 return ret;
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45 }
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46
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47 int acpi_callback(struct dirtree *tree)
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48 {
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49 int dfd, fd, len, on;
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50
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51 errno = 0;
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52
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53 if (tree->name[0]=='.') return 0;
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54
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55 if (!tree->parent)
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56 return DIRTREE_RECURSE|DIRTREE_SYMFOLLOW;
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57
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58 if (0 <= (dfd = open((TT.cpath=dirtree_path(tree, NULL)), O_RDONLY))) {
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59 if ((fd = openat(dfd, "type", O_RDONLY)) < 0) goto done;
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60 len = readall(fd, toybuf, sizeof(toybuf));
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61 close(fd);
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62 if (len < 1) goto done;
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63
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64 if (!strncmp(toybuf, "Battery", 7)) {
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65 if ((toys.optflags & FLAG_b) || (!toys.optflags)) {
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66 int cap = 0, curr = 0, max = 0;
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67
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68 if ((cap = read_int_at(dfd, "capacity")) < 0) {
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69 if ((max = read_int_at(dfd, "charge_full")) > 0)
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70 curr = read_int_at(dfd, "charge_now");
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71 else if ((max = read_int_at(dfd, "energy_full")) > 0)
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72 curr = read_int_at(dfd, "energy_now");
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73 if (max > 0 && curr >= 0) cap = 100 * curr / max;
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74 }
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75 if (cap >= 0) printf("Battery %d: %d%%\n", TT.bat++, cap);
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76 }
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77 } else if (toys.optflags & FLAG_a) {
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78 if ((on = read_int_at(dfd, "online")) >= 0)
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79 printf("Adapter %d: %s-line\n", TT.ac++, (on ? "on" : "off"));
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80 }
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81 done:
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82 close(dfd);
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83 }
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84 free(TT.cpath);
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85 return 0;
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86 }
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87
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88 int temp_callback(struct dirtree *tree)
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89 {
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90 int dfd, temp;
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91
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92 if (tree->name[0]=='.') return 0;
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93 if (!tree->parent || !tree->parent->parent)
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94 return DIRTREE_RECURSE|DIRTREE_SYMFOLLOW;
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95 errno = 0;
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96
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97 if (0 <= (dfd = open((TT.cpath=dirtree_path(tree, NULL)), O_RDONLY))) {
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98 if ((0 < (temp = read_int_at(dfd, "temp"))) || !errno) {
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99 //some tempertures are in milli-C, some in deci-C
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100 //reputedly some are in deci-K, but I have not seen them
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101 if (((temp >= 1000) || (temp <= -1000)) && (temp%100 == 0))
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102 temp /= 100;
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103 printf("Thermal %d: %d.%d degrees C\n", TT.therm++, temp/10, temp%10);
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104 }
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105 close(dfd);
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106 }
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107 free(TT.cpath);
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108 return 0;
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109 }
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110
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111 int cool_callback(struct dirtree *tree)
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112 {
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113 int dfd=5, cur, max;
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114
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115 errno = 0;
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116 memset(toybuf, 0, sizeof(toybuf));
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117
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118 if (*tree->name == '.') return 0;
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119 if (!tree->parent) return DIRTREE_RECURSE|DIRTREE_SYMFOLLOW;
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120
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121
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122 if (0 <= (dfd = open((TT.cpath=dirtree_path(tree, &dfd)), O_RDONLY))) {
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123 TT.cpath = strcat(TT.cpath, "/type");
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124 if (readfile(TT.cpath, toybuf, 256) && !errno) {
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125 toybuf[strlen(toybuf) -1] = 0;
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126 cur=read_int_at(dfd, "cur_state");
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127 max=read_int_at(dfd, "max_state");
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128 if (errno)
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129 printf("Cooling %d: %s no state information\n", TT.cool++, toybuf);
bb4cae772039 acpi: implement -ctV, fix recursion, plug a small leak
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130 else printf("Cooling %d: %s %d of %d\n", TT.cool++, toybuf, cur, max);
bb4cae772039 acpi: implement -ctV, fix recursion, plug a small leak
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parents: 1202
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131 }
bb4cae772039 acpi: implement -ctV, fix recursion, plug a small leak
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132 close(dfd);
bb4cae772039 acpi: implement -ctV, fix recursion, plug a small leak
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parents: 1202
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133 }
bb4cae772039 acpi: implement -ctV, fix recursion, plug a small leak
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parents: 1202
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134 free(TT.cpath);
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135 return 0;
0d7d6fed8141 I got tired of trying to guess how much terminal time I could get in on my phone, so here's a basic acpi.
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parents:
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136 }
0d7d6fed8141 I got tired of trying to guess how much terminal time I could get in on my phone, so here's a basic acpi.
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parents:
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137
0d7d6fed8141 I got tired of trying to guess how much terminal time I could get in on my phone, so here's a basic acpi.
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138 void acpi_main(void)
0d7d6fed8141 I got tired of trying to guess how much terminal time I could get in on my phone, so here's a basic acpi.
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139 {
1570
d2eb3c88a724 Whitespace/code style.
Rob Landley <rob@landley.net>
parents: 1519
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140 if (toys.optflags & FLAG_V) toys.optflags = FLAG_a|FLAG_b|FLAG_c|FLAG_t;
1519
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parents: 1202
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141 if (!toys.optflags) toys.optflags = FLAG_b;
bb4cae772039 acpi: implement -ctV, fix recursion, plug a small leak
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142 if (toys.optflags & (FLAG_a|FLAG_b))
bb4cae772039 acpi: implement -ctV, fix recursion, plug a small leak
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parents: 1202
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143 dirtree_read("/sys/class/power_supply", acpi_callback);
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144 if (toys.optflags & FLAG_t) dirtree_read("/sys/class", temp_callback);
d2eb3c88a724 Whitespace/code style.
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parents: 1519
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145 if (toys.optflags & FLAG_c) dirtree_read("/sys/class/thermal", cool_callback);
1519
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parents: 1202
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146
1064
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147 }