2 * Industrial I/O utilities - lsiio.c
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
18 #include <sys/types.h>
21 #include "iio_utils.h"
23 static enum verbosity {
24 VERBLEVEL_DEFAULT, /* 0 gives lspci behaviour */
25 VERBLEVEL_SENSORS, /* 1 lists sensors */
26 } verblevel = VERBLEVEL_DEFAULT;
28 const char *type_device = "iio:device";
29 const char *type_trigger = "trigger";
31 static inline int check_prefix(const char *str, const char *prefix)
33 return strlen(str) > strlen(prefix) &&
34 strncmp(str, prefix, strlen(prefix)) == 0;
37 static inline int check_postfix(const char *str, const char *postfix)
39 return strlen(str) > strlen(postfix) &&
40 strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
43 static int dump_channels(const char *dev_dir_name)
46 const struct dirent *ent;
48 dp = opendir(dev_dir_name);
52 while (ent = readdir(dp), ent)
53 if (check_prefix(ent->d_name, "in_") &&
54 (check_postfix(ent->d_name, "_raw") ||
55 check_postfix(ent->d_name, "_input")))
56 printf(" %-10s\n", ent->d_name);
58 return (closedir(dp) == -1) ? -errno : 0;
61 static int dump_one_device(const char *dev_dir_name)
63 char name[IIO_MAX_NAME_LENGTH];
67 ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), "%i",
72 ret = read_sysfs_string("name", dev_dir_name, name);
76 printf("Device %03d: %s\n", dev_idx, name);
78 if (verblevel >= VERBLEVEL_SENSORS)
79 return dump_channels(dev_dir_name);
84 static int dump_one_trigger(const char *dev_dir_name)
86 char name[IIO_MAX_NAME_LENGTH];
90 ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
95 ret = read_sysfs_string("name", dev_dir_name, name);
99 printf("Trigger %03d: %s\n", dev_idx, name);
104 static int dump_devices(void)
106 const struct dirent *ent;
110 dp = opendir(iio_dir);
112 fprintf(stderr, "No industrial I/O devices available\n");
116 while (ent = readdir(dp), ent) {
117 if (check_prefix(ent->d_name, type_device)) {
120 if (asprintf(&dev_dir_name, "%s%s", iio_dir,
123 goto error_close_dir;
126 ret = dump_one_device(dev_dir_name);
129 goto error_close_dir;
133 if (verblevel >= VERBLEVEL_SENSORS)
138 while (ent = readdir(dp), ent) {
139 if (check_prefix(ent->d_name, type_trigger)) {
142 if (asprintf(&dev_dir_name, "%s%s", iio_dir,
145 goto error_close_dir;
148 ret = dump_one_trigger(dev_dir_name);
151 goto error_close_dir;
158 return (closedir(dp) == -1) ? -errno : 0;
161 if (closedir(dp) == -1)
162 perror("dump_devices(): Failed to close directory");
167 int main(int argc, char **argv)
171 while ((c = getopt(argc, argv, "v")) != EOF) {
183 if (err || argc > optind) {
184 fprintf(stderr, "Usage: lsiio [options]...\n"
185 "List industrial I/O devices\n"
186 " -v Increase verbosity (may be given multiple times)\n");
190 return dump_devices();