Re: [PATCH] Use strscpy() instead of strcpy()

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Le 11/11/2024 à 23:10, Abdul Rahim a écrit :
strcpy() is generally considered unsafe and use of strscpy() is
recommended [1]

this fixes checkpatch warning:
     WARNING: Prefer strscpy over strcpy

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Signed-off-by: Abdul Rahim <abdul.rahim@xxxxxxxxxxx>
---
  fs/ceph/export.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ceph/export.c b/fs/ceph/export.c
index 44451749c544..0e5b3c7b3756 100644
--- a/fs/ceph/export.c
+++ b/fs/ceph/export.c
@@ -452,7 +452,7 @@ static int __get_snap_name(struct dentry *parent, char *name,
  		goto out;
  	if (ceph_snap(inode) == CEPH_SNAPDIR) {
  		if (ceph_snap(dir) == CEPH_NOSNAP) {
-			strcpy(name, fsc->mount_options->snapdir_name);
+			strscpy(name, fsc->mount_options->snapdir_name);

This does not compile because when the size of 'name' is not known at compilation time, you need to use the 3-argument version of strscpy().

Please always compile test your patches before sending them. Even, when the change looks trivial.

CJ

  			err = 0;
  		}
  		goto out;





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