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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | // SPDX-License-Identifier: GPL-2.0-only /* * Industrial I/O utilities - lsiio.c * * Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de> */ #include <string.h> #include <dirent.h> #include <stdio.h> #include <errno.h> #include <stdint.h> #include <stdlib.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/dir.h> #include "iio_utils.h" static enum verbosity { VERBLEVEL_DEFAULT, /* 0 gives lspci behaviour */ VERBLEVEL_SENSORS, /* 1 lists sensors */ } verblevel = VERBLEVEL_DEFAULT; const char *type_device = "iio:device"; const char *type_trigger = "trigger"; static inline int check_prefix(const char *str, const char *prefix) { return strlen(str) > strlen(prefix) && strncmp(str, prefix, strlen(prefix)) == 0; } static inline int check_postfix(const char *str, const char *postfix) { return strlen(str) > strlen(postfix) && strcmp(str + strlen(str) - strlen(postfix), postfix) == 0; } static int dump_channels(const char *dev_dir_name) { DIR *dp; const struct dirent *ent; dp = opendir(dev_dir_name); if (!dp) return -errno; while (ent = readdir(dp), ent) if (check_prefix(ent->d_name, "in_") && (check_postfix(ent->d_name, "_raw") || check_postfix(ent->d_name, "_input"))) printf(" %-10s\n", ent->d_name); return (closedir(dp) == -1) ? -errno : 0; } static int dump_one_device(const char *dev_dir_name) { char name[IIO_MAX_NAME_LENGTH]; int dev_idx; int ret; ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), "%i", &dev_idx); if (ret != 1) return -EINVAL; ret = read_sysfs_string("name", dev_dir_name, name); if (ret < 0) return ret; printf("Device %03d: %s\n", dev_idx, name); if (verblevel >= VERBLEVEL_SENSORS) return dump_channels(dev_dir_name); return 0; } static int dump_one_trigger(const char *dev_dir_name) { char name[IIO_MAX_NAME_LENGTH]; int dev_idx; int ret; ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger), "%i", &dev_idx); if (ret != 1) return -EINVAL; ret = read_sysfs_string("name", dev_dir_name, name); if (ret < 0) return ret; printf("Trigger %03d: %s\n", dev_idx, name); return 0; } static int dump_devices(void) { const struct dirent *ent; int ret; DIR *dp; dp = opendir(iio_dir); if (!dp) { fprintf(stderr, "No industrial I/O devices available\n"); return -ENODEV; } while (ent = readdir(dp), ent) { if (check_prefix(ent->d_name, type_device)) { char *dev_dir_name; if (asprintf(&dev_dir_name, "%s%s", iio_dir, ent->d_name) < 0) { ret = -ENOMEM; goto error_close_dir; } ret = dump_one_device(dev_dir_name); if (ret) { free(dev_dir_name); goto error_close_dir; } free(dev_dir_name); if (verblevel >= VERBLEVEL_SENSORS) printf("\n"); } } rewinddir(dp); while (ent = readdir(dp), ent) { if (check_prefix(ent->d_name, type_trigger)) { char *dev_dir_name; if (asprintf(&dev_dir_name, "%s%s", iio_dir, ent->d_name) < 0) { ret = -ENOMEM; goto error_close_dir; } ret = dump_one_trigger(dev_dir_name); if (ret) { free(dev_dir_name); goto error_close_dir; } free(dev_dir_name); } } return (closedir(dp) == -1) ? -errno : 0; error_close_dir: if (closedir(dp) == -1) perror("dump_devices(): Failed to close directory"); return ret; } int main(int argc, char **argv) { int c, err = 0; while ((c = getopt(argc, argv, "v")) != EOF) { switch (c) { case 'v': verblevel++; break; case '?': default: err++; break; } } if (err || argc > optind) { fprintf(stderr, "Usage: lsiio [options]...\n" "List industrial I/O devices\n" " -v Increase verbosity (may be given multiple times)\n"); exit(1); } return dump_devices(); } |