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authorTobin C. Harding <tobin@kernel.org>2019-04-05 12:58:58 +1100
committerShuah Khan <shuah@kernel.org>2019-04-08 16:44:21 -0600
commit458a3bf82df4fe1f951d0f52b1e0c1e9d5a88a3b (patch)
tree4d9df5df245f8f068f6624bbf6cf308784c90a94 /lib/Makefile
parent6b1a4d5b1a26ae830d50e08d7b3ca0e8b3e6b453 (diff)
lib/string: Add strscpy_pad() function
We have a function to copy strings safely and we have a function to copy strings and zero the tail of the destination (if source string is shorter than destination buffer) but we do not have a function to do both at once. This means developers must write this themselves if they desire this functionality. This is a chore, and also leaves us open to off by one errors unnecessarily. Add a function that calls strscpy() then memset()s the tail to zero if the source string is shorter than the destination buffer. Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Shuah Khan <shuah@kernel.org>
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