[PATCH v2] libtracefs: Prefer using "const char *" arguments

["Yordan Karadzhov (VMware)" <y.karadz@xxxxxxxxx>]

All functions should receive const string arguments, except in the
cases when the argument string itself needs to be modified.

Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
 include/tracefs.h      | 4 ++--
 src/tracefs-instance.c | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/tracefs.h b/include/tracefs.h
index f3eec62..05bd0ef 100644
--- a/include/tracefs.h
+++ b/include/tracefs.h
@@ -42,8 +42,8 @@ int tracefs_instance_file_open(struct tracefs_instance *instance,
 int tracefs_instances_walk(int (*callback)(const char *, void *), void *context);
 
 bool tracefs_instance_exists(const char *name);
-bool tracefs_file_exists(struct tracefs_instance *instance, char *name);
-bool tracefs_dir_exists(struct tracefs_instance *instance, char *name);
+bool tracefs_file_exists(struct tracefs_instance *instance, const char *name);
+bool tracefs_dir_exists(struct tracefs_instance *instance, const char *name);
 
 int tracefs_trace_is_on(struct tracefs_instance *instance);
 int tracefs_trace_on(struct tracefs_instance *instance);
diff --git a/src/tracefs-instance.c b/src/tracefs-instance.c
index 0df4e13..0df313c 100644
--- a/src/tracefs-instance.c
+++ b/src/tracefs-instance.c
@@ -436,7 +436,7 @@ int tracefs_instance_file_open(struct tracefs_instance *instance,
 }
 
 static bool check_file_exists(struct tracefs_instance *instance,
-			     char *name, bool dir)
+			      const char *name, bool dir)
 {
 	char file[PATH_MAX];
 	struct stat st;
@@ -482,7 +482,7 @@ bool tracefs_instance_exists(const char *name)
  *
  * If a directory with the given name exists, false is returned.
  */
-bool tracefs_file_exists(struct tracefs_instance *instance, char *name)
+bool tracefs_file_exists(struct tracefs_instance *instance, const char *name)
 {
 	return check_file_exists(instance, name, false);
 }
@@ -494,7 +494,7 @@ bool tracefs_file_exists(struct tracefs_instance *instance, char *name)
  *
  * Returns true if the directory exists, false otherwise
  */
-bool tracefs_dir_exists(struct tracefs_instance *instance, char *name)
+bool tracefs_dir_exists(struct tracefs_instance *instance, const char *name)
 {
 	return check_file_exists(instance, name, true);
 }
-- 
2.27.0