----- Ursprüngliche Mail ----- >> Fix this by using strncpy() instead of strlcpy(). The superblock >> field is defined to be a fixed-size char array, and it is already >> marked using __nonstring in fs/ext4/ext4.h. The consumer of the field >> in e2fsprogs already assumes that in the case of a 64+ byte mount >> path, that s_last_mounted will not be NUL terminated. >> >> Reported-by: Richard Weinberger <rich...@nod.at> >> Signed-off-by: Theodore Ts'o <ty...@mit.edu> > > Color me confused, but I don't see how this change makes any difference? > If "cp" is only "/" then it will *still* not overwrite "edia/johnjdeveloper" > at the end of the s_last_mounted array. To my mind, the only difference > between using strlcpy() and strncpy() would be whether the last byte in > the array can be used or not, but doesn't affect the remaining bytes.
strncpy() zeros all remaining bytes. Thanks, //richard
