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 printf(" %-10s\n", ent->d_name);
57 return (closedir(dp) == -1) ? -errno : 0;
60 static int dump_one_device(const char *dev_dir_name)
62 char name[IIO_MAX_NAME_LENGTH];
66 ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), "%i",
71 ret = read_sysfs_string("name", dev_dir_name, name);
75 printf("Device %03d: %s\n", dev_idx, name);
77 if (verblevel >= VERBLEVEL_SENSORS)
78 return dump_channels(dev_dir_name);
83 static int dump_one_trigger(const char *dev_dir_name)
85 char name[IIO_MAX_NAME_LENGTH];
89 ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
94 ret = read_sysfs_string("name", dev_dir_name, name);
98 printf("Trigger %03d: %s\n", dev_idx, name);
103 static int dump_devices(void)
105 const struct dirent *ent;
109 dp = opendir(iio_dir);
111 fprintf(stderr, "No industrial I/O devices available\n");
115 while (ent = readdir(dp), ent) {
116 if (check_prefix(ent->d_name, type_device)) {
119 if (asprintf(&dev_dir_name, "%s%s", iio_dir,
122 goto error_close_dir;
125 ret = dump_one_device(dev_dir_name);
128 goto error_close_dir;
132 if (verblevel >= VERBLEVEL_SENSORS)
137 while (ent = readdir(dp), ent) {
138 if (check_prefix(ent->d_name, type_trigger)) {
141 if (asprintf(&dev_dir_name, "%s%s", iio_dir,
144 goto error_close_dir;
147 ret = dump_one_trigger(dev_dir_name);
150 goto error_close_dir;
157 return (closedir(dp) == -1) ? -errno : 0;
160 if (closedir(dp) == -1)
161 perror("dump_devices(): Failed to close directory");
166 int main(int argc, char **argv)
170 while ((c = getopt(argc, argv, "v")) != EOF) {
182 if (err || argc > optind) {
183 fprintf(stderr, "Usage: lsiio [options]...\n"
184 "List industrial I/O devices\n"
185 " -v Increase verbosity (may be given multiple times)\n");
189 return dump_devices();