string.h: Introduce memset_after() for wiping trailing members/padding

A common idiom in kernel code is to wipe the contents of a structure
after a given member. This is especially useful in places where there is
trailing padding. These open-coded cases are usually difficult to read
and very sensitive to struct layout changes. Introduce a new helper,
memset_after() that takes the target struct instance, the byte to write,
and the member name after which the zeroing should start.

Cc: Steffen Klassert <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Francis Laniel <[email protected]>
Cc: Vincenzo Frascino <[email protected]>
Cc: Daniel Axtens <[email protected]>
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>

0 files changed, 0 insertions, 0 deletions