/* * Industrial I/O utilities - lsiio.c * * Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #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(); }