[enhancement] Add string information for error (#3186)

* [enhancement]Add string information for error

* Update src/kservice.c

* Update src/kservice.c

Co-authored-by: Man, Jianting (Meco) <[email protected]>

* remove %m

Signed-off-by: a1012112796 <[email protected]>

Co-authored-by: Meco Man <[email protected]>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/kservice.c b/src/kservice.c
index 4e6dc22675..dfa0da9cd6 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -53,6 +53,40 @@ RT_WEAK void rt_hw_us_delay(rt_uint32_t us)
         "Please consider implementing rt_hw_us_delay() in another file."));
 }
 
+static const char* rt_errno_strs[] =
+{
+    "OK",
+    "ERROR",
+    "ETIMOUT",
+    "ERSFULL",
+    "ERSEPTY",
+    "ENOMEM",
+    "ENOSYS",
+    "EBUSY",
+    "EIO",
+    "EINTRPT",
+    "EINVAL",
+    "EUNKNOW"
+};
+
+/**
+ * This function return a pointer to a string that contains the
+ * message of error.
+ *
+ * @param error the errorno code
+ * @return a point to error message string
+ */
+const char *rt_strerror(rt_err_t error)
+{
+    if (error < 0)
+        error = -error;
+
+    return (error > RT_EINVAL + 1) ?
+           rt_errno_strs[RT_EINVAL + 1] :
+           rt_errno_strs[error];
+}
+RTM_EXPORT(rt_strerror);
+
 /**
  * This function gets the global errno for the current thread.
  *