Commit | Line | Data |
---|---|---|
49d916ec MS |
1 | /* |
2 | * Industrial I/O utilities - lsiio.c | |
3 | * | |
4 | * Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de> | |
5 | * | |
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. | |
9 | */ | |
10 | ||
11 | #include <string.h> | |
12 | #include <dirent.h> | |
13 | #include <stdio.h> | |
14 | #include <errno.h> | |
15 | #include <stdint.h> | |
16 | #include <stdlib.h> | |
17 | #include <unistd.h> | |
18 | #include <sys/types.h> | |
19 | #include <sys/stat.h> | |
20 | #include <sys/dir.h> | |
21 | #include "iio_utils.h" | |
22 | ||
23 | ||
24 | static enum verbosity { | |
25 | VERBLEVEL_DEFAULT, /* 0 gives lspci behaviour */ | |
26 | VERBLEVEL_SENSORS, /* 1 lists sensors */ | |
27 | } verblevel = VERBLEVEL_DEFAULT; | |
28 | ||
29 | const char *type_device = "iio:device"; | |
30 | const char *type_trigger = "trigger"; | |
31 | ||
32 | ||
33 | static inline int check_prefix(const char *str, const char *prefix) | |
34 | { | |
35 | return strlen(str) > strlen(prefix) && | |
36 | strncmp(str, prefix, strlen(prefix)) == 0; | |
37 | } | |
38 | ||
39 | static inline int check_postfix(const char *str, const char *postfix) | |
40 | { | |
41 | return strlen(str) > strlen(postfix) && | |
42 | strcmp(str + strlen(str) - strlen(postfix), postfix) == 0; | |
43 | } | |
44 | ||
45 | static int dump_channels(const char *dev_dir_name) | |
46 | { | |
47 | DIR *dp; | |
48 | const struct dirent *ent; | |
d1e50413 | 49 | |
49d916ec MS |
50 | dp = opendir(dev_dir_name); |
51 | if (dp == NULL) | |
52 | return -errno; | |
53 | while (ent = readdir(dp), ent != NULL) | |
54 | if (check_prefix(ent->d_name, "in_") && | |
55 | check_postfix(ent->d_name, "_raw")) { | |
56 | printf(" %-10s\n", ent->d_name); | |
57 | } | |
58 | ||
f96d055e | 59 | return (closedir(dp) == -1) ? -errno : 0; |
49d916ec MS |
60 | } |
61 | ||
62 | static int dump_one_device(const char *dev_dir_name) | |
63 | { | |
64 | char name[IIO_MAX_NAME_LENGTH]; | |
65 | int dev_idx; | |
d0e68ce1 | 66 | int retval; |
49d916ec | 67 | |
d0e68ce1 | 68 | retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), |
49d916ec | 69 | "%i", &dev_idx); |
d0e68ce1 HS |
70 | if (retval != 1) |
71 | return -EINVAL; | |
acf50b35 HK |
72 | retval = read_sysfs_string("name", dev_dir_name, name); |
73 | if (retval) | |
74 | return retval; | |
75 | ||
49d916ec MS |
76 | printf("Device %03d: %s\n", dev_idx, name); |
77 | ||
edead9b1 HS |
78 | if (verblevel >= VERBLEVEL_SENSORS) |
79 | return dump_channels(dev_dir_name); | |
49d916ec MS |
80 | return 0; |
81 | } | |
82 | ||
83 | static int dump_one_trigger(const char *dev_dir_name) | |
84 | { | |
85 | char name[IIO_MAX_NAME_LENGTH]; | |
86 | int dev_idx; | |
d0e68ce1 | 87 | int retval; |
49d916ec | 88 | |
d0e68ce1 | 89 | retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger), |
49d916ec | 90 | "%i", &dev_idx); |
d0e68ce1 HS |
91 | if (retval != 1) |
92 | return -EINVAL; | |
acf50b35 HK |
93 | retval = read_sysfs_string("name", dev_dir_name, name); |
94 | if (retval) | |
95 | return retval; | |
96 | ||
49d916ec MS |
97 | printf("Trigger %03d: %s\n", dev_idx, name); |
98 | return 0; | |
99 | } | |
100 | ||
acf50b35 | 101 | static int dump_devices(void) |
49d916ec MS |
102 | { |
103 | const struct dirent *ent; | |
acf50b35 | 104 | int ret; |
49d916ec | 105 | DIR *dp; |
49d916ec MS |
106 | |
107 | dp = opendir(iio_dir); | |
108 | if (dp == NULL) { | |
109 | printf("No industrial I/O devices available\n"); | |
acf50b35 | 110 | return -ENODEV; |
49d916ec MS |
111 | } |
112 | ||
113 | while (ent = readdir(dp), ent != NULL) { | |
114 | if (check_prefix(ent->d_name, type_device)) { | |
115 | char *dev_dir_name; | |
d1e50413 | 116 | |
e9e45b43 HK |
117 | if (asprintf(&dev_dir_name, "%s%s", iio_dir, |
118 | ent->d_name) < 0) { | |
acf50b35 HK |
119 | ret = -ENOMEM; |
120 | goto error_close_dir; | |
121 | } | |
122 | ||
123 | ret = dump_one_device(dev_dir_name); | |
124 | if (ret) { | |
125 | free(dev_dir_name); | |
e9e45b43 HK |
126 | goto error_close_dir; |
127 | } | |
128 | ||
49d916ec MS |
129 | free(dev_dir_name); |
130 | if (verblevel >= VERBLEVEL_SENSORS) | |
131 | printf("\n"); | |
132 | } | |
133 | } | |
134 | rewinddir(dp); | |
135 | while (ent = readdir(dp), ent != NULL) { | |
136 | if (check_prefix(ent->d_name, type_trigger)) { | |
137 | char *dev_dir_name; | |
d1e50413 | 138 | |
e9e45b43 HK |
139 | if (asprintf(&dev_dir_name, "%s%s", iio_dir, |
140 | ent->d_name) < 0) { | |
acf50b35 HK |
141 | ret = -ENOMEM; |
142 | goto error_close_dir; | |
143 | } | |
144 | ||
145 | ret = dump_one_trigger(dev_dir_name); | |
146 | if (ret) { | |
147 | free(dev_dir_name); | |
e9e45b43 HK |
148 | goto error_close_dir; |
149 | } | |
150 | ||
49d916ec MS |
151 | free(dev_dir_name); |
152 | } | |
153 | } | |
acf50b35 HK |
154 | return (closedir(dp) == -1) ? -errno : 0; |
155 | ||
e9e45b43 | 156 | error_close_dir: |
acf50b35 HK |
157 | if (closedir(dp) == -1) |
158 | perror("dump_devices(): Failed to close directory"); | |
159 | ||
160 | return ret; | |
49d916ec MS |
161 | } |
162 | ||
163 | int main(int argc, char **argv) | |
164 | { | |
165 | int c, err = 0; | |
166 | ||
e06e3d71 | 167 | while ((c = getopt(argc, argv, "v")) != EOF) { |
49d916ec MS |
168 | switch (c) { |
169 | case 'v': | |
170 | verblevel++; | |
171 | break; | |
172 | ||
173 | case '?': | |
174 | default: | |
175 | err++; | |
176 | break; | |
177 | } | |
178 | } | |
179 | if (err || argc > optind) { | |
180 | fprintf(stderr, "Usage: lsiio [options]...\n" | |
181 | "List industrial I/O devices\n" | |
e06e3d71 | 182 | " -v Increase verbosity (may be given multiple times)\n"); |
49d916ec MS |
183 | exit(1); |
184 | } | |
185 | ||
acf50b35 | 186 | return dump_devices(); |
49d916ec | 187 | } |