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188 lines
3.7 KiB
188 lines
3.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Industrial I/O utilities - lsiio.c |
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* |
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* Copyright (c) 2010 Manuel Stahl <[email protected]> |
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*/ |
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#include <string.h> |
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#include <dirent.h> |
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#include <stdio.h> |
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#include <errno.h> |
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#include <stdint.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <sys/dir.h> |
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#include "iio_utils.h" |
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static enum verbosity { |
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VERBLEVEL_DEFAULT, /* 0 gives lspci behaviour */ |
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VERBLEVEL_SENSORS, /* 1 lists sensors */ |
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} verblevel = VERBLEVEL_DEFAULT; |
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const char *type_device = "iio:device"; |
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const char *type_trigger = "trigger"; |
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static inline int check_prefix(const char *str, const char *prefix) |
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{ |
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return strlen(str) > strlen(prefix) && |
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strncmp(str, prefix, strlen(prefix)) == 0; |
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} |
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static inline int check_postfix(const char *str, const char *postfix) |
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{ |
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return strlen(str) > strlen(postfix) && |
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strcmp(str + strlen(str) - strlen(postfix), postfix) == 0; |
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} |
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static int dump_channels(const char *dev_dir_name) |
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{ |
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DIR *dp; |
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const struct dirent *ent; |
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dp = opendir(dev_dir_name); |
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if (!dp) |
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return -errno; |
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while (ent = readdir(dp), ent) |
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if (check_prefix(ent->d_name, "in_") && |
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(check_postfix(ent->d_name, "_raw") || |
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check_postfix(ent->d_name, "_input"))) |
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printf(" %-10s\n", ent->d_name); |
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return (closedir(dp) == -1) ? -errno : 0; |
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} |
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static int dump_one_device(const char *dev_dir_name) |
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{ |
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char name[IIO_MAX_NAME_LENGTH]; |
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int dev_idx; |
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int ret; |
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ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), "%i", |
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&dev_idx); |
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if (ret != 1) |
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return -EINVAL; |
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ret = read_sysfs_string("name", dev_dir_name, name); |
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if (ret < 0) |
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return ret; |
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printf("Device %03d: %s\n", dev_idx, name); |
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if (verblevel >= VERBLEVEL_SENSORS) |
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return dump_channels(dev_dir_name); |
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return 0; |
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} |
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static int dump_one_trigger(const char *dev_dir_name) |
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{ |
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char name[IIO_MAX_NAME_LENGTH]; |
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int dev_idx; |
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int ret; |
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ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger), |
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"%i", &dev_idx); |
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if (ret != 1) |
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return -EINVAL; |
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ret = read_sysfs_string("name", dev_dir_name, name); |
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if (ret < 0) |
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return ret; |
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printf("Trigger %03d: %s\n", dev_idx, name); |
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return 0; |
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} |
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static int dump_devices(void) |
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{ |
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const struct dirent *ent; |
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int ret; |
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DIR *dp; |
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dp = opendir(iio_dir); |
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if (!dp) { |
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fprintf(stderr, "No industrial I/O devices available\n"); |
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return -ENODEV; |
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} |
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while (ent = readdir(dp), ent) { |
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if (check_prefix(ent->d_name, type_device)) { |
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char *dev_dir_name; |
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if (asprintf(&dev_dir_name, "%s%s", iio_dir, |
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ent->d_name) < 0) { |
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ret = -ENOMEM; |
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goto error_close_dir; |
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} |
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ret = dump_one_device(dev_dir_name); |
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if (ret) { |
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free(dev_dir_name); |
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goto error_close_dir; |
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} |
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free(dev_dir_name); |
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if (verblevel >= VERBLEVEL_SENSORS) |
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printf("\n"); |
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} |
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} |
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rewinddir(dp); |
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while (ent = readdir(dp), ent) { |
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if (check_prefix(ent->d_name, type_trigger)) { |
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char *dev_dir_name; |
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if (asprintf(&dev_dir_name, "%s%s", iio_dir, |
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ent->d_name) < 0) { |
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ret = -ENOMEM; |
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goto error_close_dir; |
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} |
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ret = dump_one_trigger(dev_dir_name); |
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if (ret) { |
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free(dev_dir_name); |
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goto error_close_dir; |
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} |
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free(dev_dir_name); |
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} |
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} |
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return (closedir(dp) == -1) ? -errno : 0; |
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error_close_dir: |
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if (closedir(dp) == -1) |
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perror("dump_devices(): Failed to close directory"); |
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return ret; |
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} |
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int main(int argc, char **argv) |
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{ |
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int c, err = 0; |
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while ((c = getopt(argc, argv, "v")) != EOF) { |
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switch (c) { |
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case 'v': |
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verblevel++; |
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break; |
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case '?': |
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default: |
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err++; |
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break; |
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} |
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} |
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if (err || argc > optind) { |
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fprintf(stderr, "Usage: lsiio [options]...\n" |
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"List industrial I/O devices\n" |
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" -v Increase verbosity (may be given multiple times)\n"); |
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exit(1); |
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} |
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return dump_devices(); |
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}
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