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-rw-r--r--tools/iio/iio_utils.c56
1 files changed, 25 insertions, 31 deletions
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
index 7a6d61c6c012..c5c5082cb24e 100644
--- a/tools/iio/iio_utils.c
+++ b/tools/iio/iio_utils.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/* IIO - useful set of util functionality
*
* Copyright (c) 2008 Jonathan Cameron
- *
- * 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 <stdlib.h>
@@ -80,15 +77,17 @@ int iioutils_break_up_name(const char *full_name, char **generic_name)
* @mask: output a bit mask for the raw data
* @be: output if data in big endian
* @device_dir: the IIO device directory
+ * @buffer_idx: the IIO buffer index
* @name: the channel name
* @generic_name: the channel type name
*
* Returns a value >= 0 on success, otherwise a negative error code.
**/
-int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
- unsigned *shift, uint64_t *mask, unsigned *be,
- const char *device_dir, const char *name,
- const char *generic_name)
+static int iioutils_get_type(unsigned int *is_signed, unsigned int *bytes,
+ unsigned int *bits_used, unsigned int *shift,
+ uint64_t *mask, unsigned int *be,
+ const char *device_dir, int buffer_idx,
+ const char *name, const char *generic_name)
{
FILE *sysfsfp;
int ret;
@@ -98,7 +97,7 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
unsigned padint;
const struct dirent *ent;
- ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir);
+ ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir, buffer_idx);
if (ret < 0)
return -ENOMEM;
@@ -159,9 +158,9 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used,
*be = (endianchar == 'b');
*bytes = padint / 8;
if (*bits_used == 64)
- *mask = ~0;
+ *mask = ~(0ULL);
else
- *mask = (1ULL << *bits_used) - 1;
+ *mask = (1ULL << *bits_used) - 1ULL;
*is_signed = (signchar == 's');
if (fclose(sysfsfp)) {
@@ -265,6 +264,7 @@ int iioutils_get_param_float(float *output, const char *param_name,
if (fscanf(sysfsfp, "%f", output) != 1)
ret = errno ? -errno : -ENODATA;
+ fclose(sysfsfp);
break;
}
error_free_filename:
@@ -306,12 +306,13 @@ void bsort_channel_array_by_index(struct iio_channel_info *ci_array, int cnt)
/**
* build_channel_array() - function to figure out what channels are present
* @device_dir: the IIO device directory in sysfs
+ * @buffer_idx: the IIO buffer for this channel array
* @ci_array: output the resulting array of iio_channel_info
* @counter: output the amount of array elements
*
* Returns 0 on success, otherwise a negative error code.
**/
-int build_channel_array(const char *device_dir,
+int build_channel_array(const char *device_dir, int buffer_idx,
struct iio_channel_info **ci_array, int *counter)
{
DIR *dp;
@@ -324,7 +325,7 @@ int build_channel_array(const char *device_dir,
char *filename;
*counter = 0;
- ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir);
+ ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir, buffer_idx);
if (ret < 0)
return -ENOMEM;
@@ -345,9 +346,9 @@ int build_channel_array(const char *device_dir,
}
sysfsfp = fopen(filename, "r");
+ free(filename);
if (!sysfsfp) {
ret = -errno;
- free(filename);
goto error_close_dir;
}
@@ -357,7 +358,6 @@ int build_channel_array(const char *device_dir,
if (fclose(sysfsfp))
perror("build_channel_array(): Failed to close file");
- free(filename);
goto error_close_dir;
}
if (ret == 1)
@@ -365,11 +365,9 @@ int build_channel_array(const char *device_dir,
if (fclose(sysfsfp)) {
ret = -errno;
- free(filename);
goto error_close_dir;
}
- free(filename);
}
*ci_array = malloc(sizeof(**ci_array) * (*counter));
@@ -378,7 +376,7 @@ int build_channel_array(const char *device_dir,
goto error_close_dir;
}
- seekdir(dp, 0);
+ rewinddir(dp);
while (ent = readdir(dp), ent) {
if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
"_en") == 0) {
@@ -395,9 +393,9 @@ int build_channel_array(const char *device_dir,
}
sysfsfp = fopen(filename, "r");
+ free(filename);
if (!sysfsfp) {
ret = -errno;
- free(filename);
count--;
goto error_cleanup_array;
}
@@ -405,20 +403,17 @@ int build_channel_array(const char *device_dir,
errno = 0;
if (fscanf(sysfsfp, "%i", &current_enabled) != 1) {
ret = errno ? -errno : -ENODATA;
- free(filename);
count--;
goto error_cleanup_array;
}
if (fclose(sysfsfp)) {
ret = -errno;
- free(filename);
count--;
goto error_cleanup_array;
}
if (!current_enabled) {
- free(filename);
count--;
continue;
}
@@ -429,7 +424,6 @@ int build_channel_array(const char *device_dir,
strlen(ent->d_name) -
strlen("_en"));
if (!current->name) {
- free(filename);
ret = -ENOMEM;
count--;
goto error_cleanup_array;
@@ -439,7 +433,6 @@ int build_channel_array(const char *device_dir,
ret = iioutils_break_up_name(current->name,
&current->generic_name);
if (ret) {
- free(filename);
free(current->name);
count--;
goto error_cleanup_array;
@@ -450,17 +443,16 @@ int build_channel_array(const char *device_dir,
scan_el_dir,
current->name);
if (ret < 0) {
- free(filename);
ret = -ENOMEM;
goto error_cleanup_array;
}
sysfsfp = fopen(filename, "r");
+ free(filename);
if (!sysfsfp) {
ret = -errno;
- fprintf(stderr, "failed to open %s\n",
- filename);
- free(filename);
+ fprintf(stderr, "failed to open %s/%s_index\n",
+ scan_el_dir, current->name);
goto error_cleanup_array;
}
@@ -470,17 +462,14 @@ int build_channel_array(const char *device_dir,
if (fclose(sysfsfp))
perror("build_channel_array(): Failed to close file");
- free(filename);
goto error_cleanup_array;
}
if (fclose(sysfsfp)) {
ret = -errno;
- free(filename);
goto error_cleanup_array;
}
- free(filename);
/* Find the scale */
ret = iioutils_get_param_float(&current->scale,
"scale",
@@ -505,6 +494,7 @@ int build_channel_array(const char *device_dir,
&current->mask,
&current->be,
device_dir,
+ buffer_idx,
current->name,
current->generic_name);
if (ret < 0)
@@ -546,6 +536,10 @@ static int calc_digits(int num)
{
int count = 0;
+ /* It takes a digit to represent zero */
+ if (!num)
+ return 1;
+
while (num != 0) {
num /= 10;
count++;
generated by cgit (git 2.34.1) at 2025-12-25 00:21:54 +0000