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authorHartmut Knaack <knaack.h@gmx.de>2015-05-31 14:40:36 +0200
committerJonathan Cameron <jic23@kernel.org>2015-06-01 08:40:26 +0100
commit9d4752544d17a10a40be5fc5ef68edcae5363599 (patch)
tree16730c7cb8cd89c1d19d0635e496e5977a93baa9
parente06e3d7112f2ec5494d2d934a8641a53885003ee (diff)
tools:iio:iio_utils: pass strings as const
Mark strings, which are not supposed to be changed (basedir, filename, value), as const in function parameters. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
-rw-r--r--tools/iio/iio_utils.c22
-rw-r--r--tools/iio/iio_utils.h15
2 files changed, 22 insertions, 15 deletions
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c
index dfee1a3f3f63..ec9ab7f9ae4c 100644
--- a/tools/iio/iio_utils.c
+++ b/tools/iio/iio_utils.c
@@ -634,7 +634,8 @@ error_close_dir:
return ret;
}
-static int _write_sysfs_int(char *filename, char *basedir, int val, int verify)
+static int _write_sysfs_int(const char *filename, const char *basedir, int val,
+ int verify)
{
int ret = 0;
FILE *sysfsfp;
@@ -707,7 +708,7 @@ error_free:
*
* Returns a value >= 0 on success, otherwise a negative error code.
**/
-int write_sysfs_int(char *filename, char *basedir, int val)
+int write_sysfs_int(const char *filename, const char *basedir, int val)
{
return _write_sysfs_int(filename, basedir, val, 0);
}
@@ -721,13 +722,14 @@ int write_sysfs_int(char *filename, char *basedir, int val)
*
* Returns a value >= 0 on success, otherwise a negative error code.
**/
-int write_sysfs_int_and_verify(char *filename, char *basedir, int val)
+int write_sysfs_int_and_verify(const char *filename, const char *basedir,
+ int val)
{
return _write_sysfs_int(filename, basedir, val, 1);
}
-static int _write_sysfs_string(char *filename, char *basedir, char *val,
- int verify)
+static int _write_sysfs_string(const char *filename, const char *basedir,
+ const char *val, int verify)
{
int ret = 0;
FILE *sysfsfp;
@@ -805,7 +807,8 @@ error_free:
*
* Returns a value >= 0 on success, otherwise a negative error code.
**/
-int write_sysfs_string_and_verify(char *filename, char *basedir, char *val)
+int write_sysfs_string_and_verify(const char *filename, const char *basedir,
+ const char *val)
{
return _write_sysfs_string(filename, basedir, val, 1);
}
@@ -818,7 +821,8 @@ int write_sysfs_string_and_verify(char *filename, char *basedir, char *val)
*
* Returns a value >= 0 on success, otherwise a negative error code.
**/
-int write_sysfs_string(char *filename, char *basedir, char *val)
+int write_sysfs_string(const char *filename, const char *basedir,
+ const char *val)
{
return _write_sysfs_string(filename, basedir, val, 0);
}
@@ -831,7 +835,7 @@ int write_sysfs_string(char *filename, char *basedir, char *val)
* Returns the read integer value >= 0 on success, otherwise a negative error
* code.
**/
-int read_sysfs_posint(char *filename, char *basedir)
+int read_sysfs_posint(const char *filename, const char *basedir)
{
int ret;
FILE *sysfsfp;
@@ -875,7 +879,7 @@ error_free:
*
* Returns a value >= 0 on success, otherwise a negative error code.
**/
-int read_sysfs_float(char *filename, char *basedir, float *val)
+int read_sysfs_float(const char *filename, const char *basedir, float *val)
{
int ret = 0;
FILE *sysfsfp;
diff --git a/tools/iio/iio_utils.h b/tools/iio/iio_utils.h
index e5eb46ade0a3..379eed9deaea 100644
--- a/tools/iio/iio_utils.h
+++ b/tools/iio/iio_utils.h
@@ -63,12 +63,15 @@ void bsort_channel_array_by_index(struct iio_channel_info **ci_array, int cnt);
int build_channel_array(const char *device_dir,
struct iio_channel_info **ci_array, int *counter);
int find_type_by_name(const char *name, const char *type);
-int write_sysfs_int(char *filename, char *basedir, int val);
-int write_sysfs_int_and_verify(char *filename, char *basedir, int val);
-int write_sysfs_string_and_verify(char *filename, char *basedir, char *val);
-int write_sysfs_string(char *filename, char *basedir, char *val);
-int read_sysfs_posint(char *filename, char *basedir);
-int read_sysfs_float(char *filename, char *basedir, float *val);
+int write_sysfs_int(const char *filename, const char *basedir, int val);
+int write_sysfs_int_and_verify(const char *filename, const char *basedir,
+ int val);
+int write_sysfs_string_and_verify(const char *filename, const char *basedir,
+ const char *val);
+int write_sysfs_string(const char *filename, const char *basedir,
+ const char *val);
+int read_sysfs_posint(const char *filename, const char *basedir);
+int read_sysfs_float(const char *filename, const char *basedir, float *val);
int read_sysfs_string(const char *filename, const char *basedir, char *str);
#endif /* _IIO_UTILS_H_ */