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From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH v2 1/7] libtracefs: tracefs_instance_file_read() get a const file name
Date: Tue, 12 Jan 2021 11:20:18 +0200	[thread overview]
Message-ID: <20210112092024.605705-2-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20210112092024.605705-1-tz.stoyanov@gmail.com>

The file name input parameter of tracefs_instance_file_read() API should
be a pointer to a constat string, as this file name must not be changed
by the API.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 Documentation/libtracefs-instances-files.txt | 2 +-
 Documentation/libtracefs.txt                 | 2 +-
 include/tracefs.h                            | 2 +-
 src/tracefs-instance.c                       | 2 +-
 utest/tracefs-utest.c                        | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/Documentation/libtracefs-instances-files.txt b/Documentation/libtracefs-instances-files.txt
index 9b18b73..a9af1f7 100644
--- a/Documentation/libtracefs-instances-files.txt
+++ b/Documentation/libtracefs-instances-files.txt
@@ -18,7 +18,7 @@ bool *tracefs_dir_exists*(struct tracefs_instance pass:[*]_instance_, char pass:
 char pass:[*]*tracefs_instance_get_file*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_);
 char pass:[*]*tracefs_instance_get_dir*(struct tracefs_instance pass:[*]_instance_);
 int *tracefs_instance_file_write*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, const char pass:[*]_str_);
-char pass:[*]*tracefs_instance_file_read*(struct tracefs_instance pass:[*]_instance_, char pass:[*]_file_, int pass:[*]_psize_);
+char pass:[*]*tracefs_instance_file_read*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, int pass:[*]_psize_);
 
 --
 
diff --git a/Documentation/libtracefs.txt b/Documentation/libtracefs.txt
index ddbf783..bf3882f 100644
--- a/Documentation/libtracefs.txt
+++ b/Documentation/libtracefs.txt
@@ -26,7 +26,7 @@ Trace instances:
 	char pass:[*]*tracefs_instance_get_file*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_);
 	char pass:[*]*tracefs_instance_get_dir*(struct tracefs_instance pass:[*]_instance_);
 	int *tracefs_instance_file_write*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, const char pass:[*]_str_);
-	char pass:[*]*tracefs_instance_file_read*(struct tracefs_instance pass:[*]_instance_, char pass:[*]_file_, int pass:[*]_psize_);
+	char pass:[*]*tracefs_instance_file_read*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, int pass:[*]_psize_);
 	const char pass:[*]*tracefs_instance_get_name*(struct tracefs_instance pass:[*]_instance_);
 	int *tracefs_instances_walk*(int (pass:[*]_callback_)(const char pass:[*], void pass:[*]), void pass:[*]_context)_;
 	bool *tracefs_instance_exists*(const char pass:[*]_name_);
diff --git a/include/tracefs.h b/include/tracefs.h
index 3d70aca..06e2130 100644
--- a/include/tracefs.h
+++ b/include/tracefs.h
@@ -29,7 +29,7 @@ char *tracefs_instance_get_dir(struct tracefs_instance *instance);
 int tracefs_instance_file_write(struct tracefs_instance *instance,
 				const char *file, const char *str);
 char *tracefs_instance_file_read(struct tracefs_instance *instance,
-				 char *file, int *psize);
+				 const char *file, int *psize);
 int tracefs_instances_walk(int (*callback)(const char *, void *), void *context);
 
 bool tracefs_instance_exists(const char *name);
diff --git a/src/tracefs-instance.c b/src/tracefs-instance.c
index bf3de7c..6dc85ee 100644
--- a/src/tracefs-instance.c
+++ b/src/tracefs-instance.c
@@ -282,7 +282,7 @@ int tracefs_instance_file_write(struct tracefs_instance *instance,
  * The return string must be freed by free()
  */
 char *tracefs_instance_file_read(struct tracefs_instance *instance,
-				  char *file, int *psize)
+				 const char *file, int *psize)
 {
 	char *buf = NULL;
 	int size = 0;
diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
index b45a3c6..a8e8f67 100644
--- a/utest/tracefs-utest.c
+++ b/utest/tracefs-utest.c
@@ -181,7 +181,7 @@ static void test_trace_file(void)
 	tracefs_put_tracing_file(file);
 }
 
-static void test_instance_file_read(struct tracefs_instance *inst, char *fname)
+static void test_instance_file_read(struct tracefs_instance *inst, const char *fname)
 {
 	const char *tdir  = tracefs_tracing_dir();
 	char buf[BUFSIZ];
-- 
2.29.2


  reply	other threads:[~2021-01-12  9:21 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-12  9:20 [PATCH v2 0/7] New libtracefs APIs Tzvetomir Stoyanov (VMware)
2021-01-12  9:20 ` Tzvetomir Stoyanov (VMware) [this message]
2021-01-12  9:20 ` [PATCH v2 2/7] libtracefs: New APIs for opening and reading ftrace files Tzvetomir Stoyanov (VMware)
2021-01-12  9:20 ` [PATCH v2 3/7] libtracefs: New APIs for enable / disable tracing Tzvetomir Stoyanov (VMware)
2021-02-19  3:07   ` Steven Rostedt
2021-01-12  9:20 ` [PATCH v2 4/7] libtracefs: Documentation for the new APIs for opening and reading ftrace files Tzvetomir Stoyanov (VMware)
2021-01-12  9:20 ` [PATCH v2 5/7] libtracefs: Documentation for enable / disable tracing APIs Tzvetomir Stoyanov (VMware)
2021-01-12  9:20 ` [PATCH v2 6/7] libtracefs: Unit tests for the new APIs for opening and reading ftrace files Tzvetomir Stoyanov (VMware)
2021-01-12  9:20 ` [PATCH v2 7/7] libtracefs: Unit tests for enable / disable tracing APIs Tzvetomir Stoyanov (VMware)

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