4.9-stable review patch. If anyone has any objections, please let me know.
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From: Guenter Roeck linux@roeck-us.net
commit 1823342a1f2b47a4e6f5667f67cd28ab6bc4d6cd upstream.
gcc 8.1.0 complains:
fs/configfs/symlink.c:67:3: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length fs/configfs/symlink.c: In function 'configfs_get_link': fs/configfs/symlink.c:63:13: note: length computed here
Using strncpy() is indeed less than perfect since the length of data to be copied has already been determined with strlen(). Replace strncpy() with memcpy() to address the warning and optimize the code a little.
Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Nobuhiro Iwamatsu nobuhiro.iwamatsu@cybertrust.co.jp Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/configfs/symlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/configfs/symlink.c +++ b/fs/configfs/symlink.c @@ -64,7 +64,7 @@ static void fill_item_path(struct config
/* back up enough to print this bus id with '/' */ length -= cur; - strncpy(buffer + length,config_item_name(p),cur); + memcpy(buffer + length, config_item_name(p), cur); *(buffer + --length) = '/'; } }