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Diffstat (limited to 'tools/iio/iio_utils.c')
-rw-r--r--tools/iio/iio_utils.c111
1 files changed, 67 insertions, 44 deletions
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
index ec9ab7f9ae4c..4eac11ad38c4 100644
--- a/tools/iio/iio_utils.c
+++ b/tools/iio/iio_utils.c
@@ -32,8 +32,7 @@ static char * const iio_direction[] = {
*
* Returns 0 on success, or a negative error code if string extraction failed.
**/
-int iioutils_break_up_name(const char *full_name,
- char **generic_name)
+int iioutils_break_up_name(const char *full_name, char **generic_name)
{
char *current;
char *w, *r;
@@ -65,6 +64,7 @@ int iioutils_break_up_name(const char *full_name,
*w = *r;
w++;
}
+
r++;
}
*w = '\0';
@@ -88,15 +88,10 @@ int iioutils_break_up_name(const char *full_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)
+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)
{
FILE *sysfsfp;
int ret;
@@ -126,6 +121,7 @@ int iioutils_get_type(unsigned *is_signed,
ret = -errno;
goto error_free_builtname_generic;
}
+
ret = -ENOENT;
while (ent = readdir(dp), ent != NULL)
/*
@@ -140,6 +136,7 @@ int iioutils_get_type(unsigned *is_signed,
ret = -ENOMEM;
goto error_closedir;
}
+
sysfsfp = fopen(filename, "r");
if (sysfsfp == NULL) {
ret = -errno;
@@ -162,12 +159,14 @@ int iioutils_get_type(unsigned *is_signed,
printf("scan type description didn't match\n");
goto error_close_sysfsfp;
}
+
*be = (endianchar == 'b');
*bytes = padint / 8;
if (*bits_used == 64)
*mask = ~0;
else
*mask = (1 << *bits_used) - 1;
+
*is_signed = (signchar == 's');
if (fclose(sysfsfp)) {
ret = -errno;
@@ -177,9 +176,9 @@ int iioutils_get_type(unsigned *is_signed,
sysfsfp = 0;
free(filename);
-
filename = 0;
}
+
error_close_sysfsfp:
if (sysfsfp)
if (fclose(sysfsfp))
@@ -188,6 +187,7 @@ error_close_sysfsfp:
error_free_filename:
if (filename)
free(filename);
+
error_closedir:
if (closedir(dp) == -1)
perror("iioutils_get_type(): Failed to close directory");
@@ -212,11 +212,9 @@ error_free_scan_el_dir:
*
* Returns a value >= 0 on success, otherwise a negative error code.
**/
-int iioutils_get_param_float(float *output,
- const char *param_name,
- const char *device_dir,
- const char *name,
- const char *generic_name)
+int iioutils_get_param_float(float *output, const char *param_name,
+ const char *device_dir, const char *name,
+ const char *generic_name)
{
FILE *sysfsfp;
int ret;
@@ -235,11 +233,13 @@ int iioutils_get_param_float(float *output,
ret = -ENOMEM;
goto error_free_builtname;
}
+
dp = opendir(device_dir);
if (dp == NULL) {
ret = -errno;
goto error_free_builtname_generic;
}
+
ret = -ENOENT;
while (ent = readdir(dp), ent != NULL)
if ((strcmp(builtname, ent->d_name) == 0) ||
@@ -250,11 +250,13 @@ int iioutils_get_param_float(float *output,
ret = -ENOMEM;
goto error_closedir;
}
+
sysfsfp = fopen(filename, "r");
if (!sysfsfp) {
ret = -errno;
goto error_free_filename;
}
+
errno = 0;
if (fscanf(sysfsfp, "%f", output) != 1)
ret = errno ? -errno : -ENODATA;
@@ -264,6 +266,7 @@ int iioutils_get_param_float(float *output,
error_free_filename:
if (filename)
free(filename);
+
error_closedir:
if (closedir(dp) == -1)
perror("iioutils_get_param_float(): Failed to close directory");
@@ -282,16 +285,14 @@ error_free_builtname:
* @cnt: the amount of array elements
**/
-void bsort_channel_array_by_index(struct iio_channel_info **ci_array,
- int cnt)
+void bsort_channel_array_by_index(struct iio_channel_info **ci_array, int cnt)
{
-
struct iio_channel_info temp;
int x, y;
for (x = 0; x < cnt; x++)
for (y = 0; y < (cnt - 1); y++)
- if ((*ci_array)[y].index > (*ci_array)[y+1].index) {
+ if ((*ci_array)[y].index > (*ci_array)[y + 1].index) {
temp = (*ci_array)[y + 1];
(*ci_array)[y + 1] = (*ci_array)[y];
(*ci_array)[y] = temp;
@@ -307,8 +308,7 @@ void bsort_channel_array_by_index(struct iio_channel_info **ci_array,
* Returns 0 on success, otherwise a negative error code.
**/
int build_channel_array(const char *device_dir,
- struct iio_channel_info **ci_array,
- int *counter)
+ struct iio_channel_info **ci_array, int *counter)
{
DIR *dp;
FILE *sysfsfp;
@@ -329,6 +329,7 @@ int build_channel_array(const char *device_dir,
ret = -errno;
goto error_free_name;
}
+
while (ent = readdir(dp), ent != NULL)
if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
"_en") == 0) {
@@ -338,12 +339,14 @@ int build_channel_array(const char *device_dir,
ret = -ENOMEM;
goto error_close_dir;
}
+
sysfsfp = fopen(filename, "r");
if (sysfsfp == NULL) {
ret = -errno;
free(filename);
goto error_close_dir;
}
+
errno = 0;
if (fscanf(sysfsfp, "%i", &ret) != 1) {
ret = errno ? -errno : -ENODATA;
@@ -353,9 +356,9 @@ int build_channel_array(const char *device_dir,
free(filename);
goto error_close_dir;
}
-
if (ret == 1)
(*counter)++;
+
if (fclose(sysfsfp)) {
ret = -errno;
free(filename);
@@ -364,11 +367,13 @@ int build_channel_array(const char *device_dir,
free(filename);
}
+
*ci_array = malloc(sizeof(**ci_array) * (*counter));
if (*ci_array == NULL) {
ret = -ENOMEM;
goto error_close_dir;
}
+
seekdir(dp, 0);
while (ent = readdir(dp), ent != NULL) {
if (strcmp(ent->d_name + strlen(ent->d_name) - strlen("_en"),
@@ -384,6 +389,7 @@ int build_channel_array(const char *device_dir,
count--;
goto error_cleanup_array;
}
+
sysfsfp = fopen(filename, "r");
if (sysfsfp == NULL) {
ret = -errno;
@@ -391,6 +397,7 @@ int build_channel_array(const char *device_dir,
count--;
goto error_cleanup_array;
}
+
errno = 0;
if (fscanf(sysfsfp, "%i", &current_enabled) != 1) {
ret = errno ? -errno : -ENODATA;
@@ -423,6 +430,7 @@ int build_channel_array(const char *device_dir,
count--;
goto error_cleanup_array;
}
+
/* Get the generic and specific name elements */
ret = iioutils_break_up_name(current->name,
&current->generic_name);
@@ -432,6 +440,7 @@ int build_channel_array(const char *device_dir,
count--;
goto error_cleanup_array;
}
+
ret = asprintf(&filename,
"%s/%s_index",
scan_el_dir,
@@ -441,6 +450,7 @@ int build_channel_array(const char *device_dir,
ret = -ENOMEM;
goto error_cleanup_array;
}
+
sysfsfp = fopen(filename, "r");
if (sysfsfp == NULL) {
ret = -errno;
@@ -474,6 +484,7 @@ int build_channel_array(const char *device_dir,
current->generic_name);
if (ret < 0)
goto error_cleanup_array;
+
ret = iioutils_get_param_float(&current->offset,
"offset",
device_dir,
@@ -481,6 +492,7 @@ int build_channel_array(const char *device_dir,
current->generic_name);
if (ret < 0)
goto error_cleanup_array;
+
ret = iioutils_get_type(&current->is_signed,
&current->bytes,
&current->bits_used,
@@ -562,9 +574,9 @@ int find_type_by_name(const char *name, const char *type)
while (ent = readdir(dp), ent != NULL) {
if (strcmp(ent->d_name, ".") != 0 &&
- strcmp(ent->d_name, "..") != 0 &&
- strlen(ent->d_name) > strlen(type) &&
- strncmp(ent->d_name, type, strlen(type)) == 0) {
+ strcmp(ent->d_name, "..") != 0 &&
+ strlen(ent->d_name) > strlen(type) &&
+ strncmp(ent->d_name, type, strlen(type)) == 0) {
errno = 0;
ret = sscanf(ent->d_name + strlen(type), "%d", &number);
if (ret < 0) {
@@ -580,12 +592,9 @@ int find_type_by_name(const char *name, const char *type)
numstrlen = calc_digits(number);
/* verify the next character is not a colon */
if (strncmp(ent->d_name + strlen(type) + numstrlen,
- ":",
- 1) != 0) {
- filename = malloc(strlen(iio_dir)
- + strlen(type)
- + numstrlen
- + 6);
+ ":", 1) != 0) {
+ filename = malloc(strlen(iio_dir) + strlen(type)
+ + numstrlen + 6);
if (filename == NULL) {
ret = -ENOMEM;
goto error_close_dir;
@@ -603,6 +612,7 @@ int find_type_by_name(const char *name, const char *type)
free(filename);
continue;
}
+
free(filename);
errno = 0;
if (fscanf(nameFile, "%s", thisname) != 1) {
@@ -618,6 +628,7 @@ int find_type_by_name(const char *name, const char *type)
if (strcmp(name, thisname) == 0) {
if (closedir(dp) == -1)
return -errno;
+
return number;
}
}
@@ -631,6 +642,7 @@ int find_type_by_name(const char *name, const char *type)
error_close_dir:
if (closedir(dp) == -1)
perror("find_type_by_name(): Failed to close directory");
+
return ret;
}
@@ -644,6 +656,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
if (temp == NULL)
return -ENOMEM;
+
ret = sprintf(temp, "%s/%s", basedir, filename);
if (ret < 0)
goto error_free;
@@ -654,6 +667,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
printf("failed to open %s\n", temp);
goto error_free;
}
+
ret = fprintf(sysfsfp, "%d", val);
if (ret < 0) {
if (fclose(sysfsfp))
@@ -674,6 +688,7 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
printf("failed to open %s\n", temp);
goto error_free;
}
+
if (fscanf(sysfsfp, "%d", &test) != 1) {
ret = errno ? -errno : -ENODATA;
if (fclose(sysfsfp))
@@ -688,13 +703,12 @@ static int _write_sysfs_int(const char *filename, const char *basedir, int val,
}
if (test != val) {
- printf("Possible failure in int write %d to %s%s\n",
- val,
- basedir,
- filename);
+ printf("Possible failure in int write %d to %s/%s\n",
+ val, basedir, filename);
ret = -1;
}
}
+
error_free:
free(temp);
return ret;
@@ -739,6 +753,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
printf("Memory allocation failed\n");
return -ENOMEM;
}
+
ret = sprintf(temp, "%s/%s", basedir, filename);
if (ret < 0)
goto error_free;
@@ -749,6 +764,7 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
printf("Could not open %s\n", temp);
goto error_free;
}
+
ret = fprintf(sysfsfp, "%s", val);
if (ret < 0) {
if (fclose(sysfsfp))
@@ -766,9 +782,10 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
sysfsfp = fopen(temp, "r");
if (sysfsfp == NULL) {
ret = -errno;
- printf("could not open file to verify\n");
+ printf("Could not open file to verify\n");
goto error_free;
}
+
if (fscanf(sysfsfp, "%s", temp) != 1) {
ret = errno ? -errno : -ENODATA;
if (fclose(sysfsfp))
@@ -784,15 +801,12 @@ static int _write_sysfs_string(const char *filename, const char *basedir,
if (strcmp(temp, val) != 0) {
printf("Possible failure in string write of %s "
- "Should be %s "
- "written to %s\%s\n",
- temp,
- val,
- basedir,
- filename);
+ "Should be %s written to %s/%s\n", temp, val,
+ basedir, filename);
ret = -1;
}
}
+
error_free:
free(temp);
@@ -845,6 +859,7 @@ int read_sysfs_posint(const char *filename, const char *basedir)
printf("Memory allocation failed");
return -ENOMEM;
}
+
ret = sprintf(temp, "%s/%s", basedir, filename);
if (ret < 0)
goto error_free;
@@ -854,6 +869,7 @@ int read_sysfs_posint(const char *filename, const char *basedir)
ret = -errno;
goto error_free;
}
+
errno = 0;
if (fscanf(sysfsfp, "%d\n", &ret) != 1) {
ret = errno ? -errno : -ENODATA;
@@ -868,6 +884,7 @@ int read_sysfs_posint(const char *filename, const char *basedir)
error_free:
free(temp);
+
return ret;
}
@@ -889,6 +906,7 @@ int read_sysfs_float(const char *filename, const char *basedir, float *val)
printf("Memory allocation failed");
return -ENOMEM;
}
+
ret = sprintf(temp, "%s/%s", basedir, filename);
if (ret < 0)
goto error_free;
@@ -898,6 +916,7 @@ int read_sysfs_float(const char *filename, const char *basedir, float *val)
ret = -errno;
goto error_free;
}
+
errno = 0;
if (fscanf(sysfsfp, "%f\n", val) != 1) {
ret = errno ? -errno : -ENODATA;
@@ -912,6 +931,7 @@ int read_sysfs_float(const char *filename, const char *basedir, float *val)
error_free:
free(temp);
+
return ret;
}
@@ -933,6 +953,7 @@ int read_sysfs_string(const char *filename, const char *basedir, char *str)
printf("Memory allocation failed");
return -ENOMEM;
}
+
ret = sprintf(temp, "%s/%s", basedir, filename);
if (ret < 0)
goto error_free;
@@ -942,6 +963,7 @@ int read_sysfs_string(const char *filename, const char *basedir, char *str)
ret = -errno;
goto error_free;
}
+
errno = 0;
if (fscanf(sysfsfp, "%s\n", str) != 1) {
ret = errno ? -errno : -ENODATA;
@@ -956,6 +978,7 @@ int read_sysfs_string(const char *filename, const char *basedir, char *str)
error_free:
free(temp);
+
return ret;
}
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