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 166126c1e54d927c2e8efa2702d420e0ce301fd9 upstream.
gcc 8.1.0 complains:
fs/kernfs/symlink.c:91:3: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length fs/kernfs/symlink.c: In function 'kernfs_iop_get_link': fs/kernfs/symlink.c:88:14: 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 Acked-by: Tejun Heo tj@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/kernfs/symlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/kernfs/symlink.c +++ b/fs/kernfs/symlink.c @@ -88,7 +88,7 @@ static int kernfs_get_target_path(struct int slen = strlen(kn->name);
len -= slen; - strncpy(s + len, kn->name, slen); + memcpy(s + len, kn->name, slen); if (len) s[--len] = '/';