If errno_str() is called with an unsupported error number, do not return a
random pointer but a reasonable text.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
Reviewed-by: Simon Glass <s...@chromium.org>
---
v2:
no change
---
lib/errno_str.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/lib/errno_str.c b/lib/errno_str.c
index 0ba950e970..bb8f9fbeb3 100644
--- a/lib/errno_str.c
+++ b/lib/errno_str.c
@@ -136,6 +136,8 @@ static const char * const errno_message[] = {
ERRNO_MSG(EDQUOT, "Quota exceeded"),
ERRNO_MSG(ENOMEDIUM, "No medium found"),
ERRNO_MSG(EMEDIUMTYPE, "Wrong medium type"),
+ /* Message for unsupported error numbers */
+ ERRNO_MSG(0, "Unknown error"),
};
const char *errno_str(int errno)
@@ -143,5 +145,9 @@ const char *errno_str(int errno)
if (errno >= 0)
return errno_message[0];
- return errno_message[abs(errno)];
+ errno = -errno;
+ if (errno >= ARRAY_SIZE(errno_message))
+ errno = ARRAY_SIZE(errno_message) - 1;
+
+ return errno_message[errno];
}
--
2.23.0
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
