net: lib: lwm2m: make pathstr parameter const correct

many functions in the lwm2m librarys api take a pathstr argument
that is never written to, so make it const

Signed-off-by: Henning Fleddermann <[email protected]>

Author: huelsenfruchtzwerg

include/net/lwm2m.h

@@ -552,7 +552,7 @@ struct lwm2m_objlnk {
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_update_observer_min_period(char *pathstr, uint32_t period_s);
+int lwm2m_engine_update_observer_min_period(const char *pathstr, uint32_t period_s);
 
 /**
  * @brief Change an observer's pmax value.
@@ -567,7 +567,7 @@ int lwm2m_engine_update_observer_min_period(char *pathstr, uint32_t period_s);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_update_observer_max_period(char *pathstr, uint32_t period_s);
+int lwm2m_engine_update_observer_max_period(const char *pathstr, uint32_t period_s);
 
 /**
  * @brief Create an LwM2M object instance.
@@ -580,7 +580,7 @@ int lwm2m_engine_update_observer_max_period(char *pathstr, uint32_t period_s);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_create_obj_inst(char *pathstr);
+int lwm2m_engine_create_obj_inst(const char *pathstr);
 
 /**
  * @brief Delete an LwM2M object instance.
@@ -591,7 +591,7 @@ int lwm2m_engine_create_obj_inst(char *pathstr);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_delete_obj_inst(char *pathstr);
+int lwm2m_engine_delete_obj_inst(const char *pathstr);
 
 /**
  * @brief Set resource (instance) value (opaque buffer)
@@ -602,7 +602,7 @@ int lwm2m_engine_delete_obj_inst(char *pathstr);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_opaque(char *pathstr, char *data_ptr, uint16_t data_len);
+int lwm2m_engine_set_opaque(const char *pathstr, char *data_ptr, uint16_t data_len);
 
 /**
  * @brief Set resource (instance) value (string)
@@ -612,7 +612,7 @@ int lwm2m_engine_set_opaque(char *pathstr, char *data_ptr, uint16_t data_len);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_string(char *pathstr, char *data_ptr);
+int lwm2m_engine_set_string(const char *pathstr, char *data_ptr);
 
 /**
  * @brief Set resource (instance) value (u8)
@@ -622,7 +622,7 @@ int lwm2m_engine_set_string(char *pathstr, char *data_ptr);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_u8(char *pathstr, uint8_t value);
+int lwm2m_engine_set_u8(const char *pathstr, uint8_t value);
 
 /**
  * @brief Set resource (instance) value (u16)
@@ -632,7 +632,7 @@ int lwm2m_engine_set_u8(char *pathstr, uint8_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_u16(char *pathstr, uint16_t value);
+int lwm2m_engine_set_u16(const char *pathstr, uint16_t value);
 
 /**
  * @brief Set resource (instance) value (u32)
@@ -642,7 +642,7 @@ int lwm2m_engine_set_u16(char *pathstr, uint16_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_u32(char *pathstr, uint32_t value);
+int lwm2m_engine_set_u32(const char *pathstr, uint32_t value);
 
 /**
  * @brief Set resource (instance) value (u64)
@@ -652,7 +652,7 @@ int lwm2m_engine_set_u32(char *pathstr, uint32_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_u64(char *pathstr, uint64_t value);
+int lwm2m_engine_set_u64(const char *pathstr, uint64_t value);
 
 /**
  * @brief Set resource (instance) value (s8)
@@ -662,7 +662,7 @@ int lwm2m_engine_set_u64(char *pathstr, uint64_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_s8(char *pathstr, int8_t value);
+int lwm2m_engine_set_s8(const char *pathstr, int8_t value);
 
 /**
  * @brief Set resource (instance) value (s16)
@@ -672,7 +672,7 @@ int lwm2m_engine_set_s8(char *pathstr, int8_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_s16(char *pathstr, int16_t value);
+int lwm2m_engine_set_s16(const char *pathstr, int16_t value);
 
 /**
  * @brief Set resource (instance) value (s32)
@@ -682,7 +682,7 @@ int lwm2m_engine_set_s16(char *pathstr, int16_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_s32(char *pathstr, int32_t value);
+int lwm2m_engine_set_s32(const char *pathstr, int32_t value);
 
 /**
  * @brief Set resource (instance) value (s64)
@@ -692,7 +692,7 @@ int lwm2m_engine_set_s32(char *pathstr, int32_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_s64(char *pathstr, int64_t value);
+int lwm2m_engine_set_s64(const char *pathstr, int64_t value);
 
 /**
  * @brief Set resource (instance) value (bool)
@@ -702,7 +702,7 @@ int lwm2m_engine_set_s64(char *pathstr, int64_t value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_bool(char *pathstr, bool value);
+int lwm2m_engine_set_bool(const char *pathstr, bool value);
 
 /**
  * @brief Set resource (instance) value (double)
@@ -712,7 +712,7 @@ int lwm2m_engine_set_bool(char *pathstr, bool value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_float(char *pathstr, double *value);
+int lwm2m_engine_set_float(const char *pathstr, double *value);
 
 /**
  * @brief Set resource (instance) value (ObjLnk)
@@ -722,7 +722,7 @@ int lwm2m_engine_set_float(char *pathstr, double *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_objlnk(char *pathstr, struct lwm2m_objlnk *value);
+int lwm2m_engine_set_objlnk(const char *pathstr, struct lwm2m_objlnk *value);
 
 /**
  * @brief Get resource (instance) value (opaque buffer)
@@ -733,7 +733,7 @@ int lwm2m_engine_set_objlnk(char *pathstr, struct lwm2m_objlnk *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_opaque(char *pathstr, void *buf, uint16_t buflen);
+int lwm2m_engine_get_opaque(const char *pathstr, void *buf, uint16_t buflen);
 
 /**
  * @brief Get resource (instance) value (string)
@@ -744,7 +744,7 @@ int lwm2m_engine_get_opaque(char *pathstr, void *buf, uint16_t buflen);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_string(char *pathstr, void *str, uint16_t strlen);
+int lwm2m_engine_get_string(const char *pathstr, void *str, uint16_t strlen);
 
 /**
  * @brief Get resource (instance) value (u8)
@@ -754,7 +754,7 @@ int lwm2m_engine_get_string(char *pathstr, void *str, uint16_t strlen);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_u8(char *pathstr, uint8_t *value);
+int lwm2m_engine_get_u8(const char *pathstr, uint8_t *value);
 
 /**
  * @brief Get resource (instance) value (u16)
@@ -764,7 +764,7 @@ int lwm2m_engine_get_u8(char *pathstr, uint8_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_u16(char *pathstr, uint16_t *value);
+int lwm2m_engine_get_u16(const char *pathstr, uint16_t *value);
 
 /**
  * @brief Get resource (instance) value (u32)
@@ -774,7 +774,7 @@ int lwm2m_engine_get_u16(char *pathstr, uint16_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_u32(char *pathstr, uint32_t *value);
+int lwm2m_engine_get_u32(const char *pathstr, uint32_t *value);
 
 /**
  * @brief Get resource (instance) value (u64)
@@ -784,7 +784,7 @@ int lwm2m_engine_get_u32(char *pathstr, uint32_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_u64(char *pathstr, uint64_t *value);
+int lwm2m_engine_get_u64(const char *pathstr, uint64_t *value);
 
 /**
  * @brief Get resource (instance) value (s8)
@@ -794,7 +794,7 @@ int lwm2m_engine_get_u64(char *pathstr, uint64_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_s8(char *pathstr, int8_t *value);
+int lwm2m_engine_get_s8(const char *pathstr, int8_t *value);
 
 /**
  * @brief Get resource (instance) value (s16)
@@ -804,7 +804,7 @@ int lwm2m_engine_get_s8(char *pathstr, int8_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_s16(char *pathstr, int16_t *value);
+int lwm2m_engine_get_s16(const char *pathstr, int16_t *value);
 
 /**
  * @brief Get resource (instance) value (s32)
@@ -814,7 +814,7 @@ int lwm2m_engine_get_s16(char *pathstr, int16_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_s32(char *pathstr, int32_t *value);
+int lwm2m_engine_get_s32(const char *pathstr, int32_t *value);
 
 /**
  * @brief Get resource (instance) value (s64)
@@ -824,7 +824,7 @@ int lwm2m_engine_get_s32(char *pathstr, int32_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_s64(char *pathstr, int64_t *value);
+int lwm2m_engine_get_s64(const char *pathstr, int64_t *value);
 
 /**
  * @brief Get resource (instance) value (bool)
@@ -834,7 +834,7 @@ int lwm2m_engine_get_s64(char *pathstr, int64_t *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_bool(char *pathstr, bool *value);
+int lwm2m_engine_get_bool(const char *pathstr, bool *value);
 
 /**
  * @brief Get resource (instance) value (double)
@@ -844,7 +844,7 @@ int lwm2m_engine_get_bool(char *pathstr, bool *value);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_float(char *pathstr, double *buf);
+int lwm2m_engine_get_float(const char *pathstr, double *buf);
 
 /**
  * @brief Get resource (instance) value (ObjLnk)
@@ -854,7 +854,7 @@ int lwm2m_engine_get_float(char *pathstr, double *buf);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_objlnk(char *pathstr, struct lwm2m_objlnk *buf);
+int lwm2m_engine_get_objlnk(const char *pathstr, struct lwm2m_objlnk *buf);
 
 
 /**
@@ -867,7 +867,7 @@ int lwm2m_engine_get_objlnk(char *pathstr, struct lwm2m_objlnk *buf);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_register_read_callback(char *pathstr,
+int lwm2m_engine_register_read_callback(const char *pathstr,
 					lwm2m_engine_get_data_cb_t cb);
 
 /**
@@ -882,7 +882,7 @@ int lwm2m_engine_register_read_callback(char *pathstr,
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_register_pre_write_callback(char *pathstr,
+int lwm2m_engine_register_pre_write_callback(const char *pathstr,
 					     lwm2m_engine_get_data_cb_t cb);
 
 /**
@@ -905,7 +905,7 @@ int lwm2m_engine_register_pre_write_callback(char *pathstr,
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_register_validate_callback(char *pathstr,
+int lwm2m_engine_register_validate_callback(const char *pathstr,
 					    lwm2m_engine_set_data_cb_t cb);
 
 /**
@@ -922,7 +922,7 @@ int lwm2m_engine_register_validate_callback(char *pathstr,
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_register_post_write_callback(char *pathstr,
+int lwm2m_engine_register_post_write_callback(const char *pathstr,
 					      lwm2m_engine_set_data_cb_t cb);
 
 /**
@@ -935,7 +935,7 @@ int lwm2m_engine_register_post_write_callback(char *pathstr,
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_register_exec_callback(char *pathstr,
+int lwm2m_engine_register_exec_callback(const char *pathstr,
 					lwm2m_engine_execute_cb_t cb);
 
 /**
@@ -992,7 +992,7 @@ int lwm2m_engine_register_delete_callback(uint16_t obj_id,
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_set_res_data(char *pathstr, void *data_ptr, uint16_t data_len,
+int lwm2m_engine_set_res_data(const char *pathstr, void *data_ptr, uint16_t data_len,
 			      uint8_t data_flags);
 
 /**
@@ -1008,7 +1008,7 @@ int lwm2m_engine_set_res_data(char *pathstr, void *data_ptr, uint16_t data_len,
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_get_res_data(char *pathstr, void **data_ptr,
+int lwm2m_engine_get_res_data(const char *pathstr, void **data_ptr,
 			      uint16_t *data_len, uint8_t *data_flags);
 
 /**
@@ -1022,7 +1022,7 @@ int lwm2m_engine_get_res_data(char *pathstr, void **data_ptr,
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_create_res_inst(char *pathstr);
+int lwm2m_engine_create_res_inst(const char *pathstr);
 
 /**
  * @brief Delete a resource instance
@@ -1033,7 +1033,7 @@ int lwm2m_engine_create_res_inst(char *pathstr);
  *
  * @return 0 for success or negative in case of error.
  */
-int lwm2m_engine_delete_res_inst(char *pathstr);
+int lwm2m_engine_delete_res_inst(const char *pathstr);
 
 /**
  * @brief Update the period of a given service.