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| author | Kees Cook <keescook@chromium.org> | 2014-06-06 23:37:18 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-07 01:08:13 +0200 |
| commit | 2ca9bb456ada8bcbdc8f77f8fc78207653bbaa92 (patch) | |
| tree | 05f8bd09ad6e9b24b735d7cf90c3167bade83050 /Documentation/devicetree | |
| parent | sysctl: clean up char buffer arguments (diff) | |
| download | linux-2ca9bb456ada8bcbdc8f77f8fc78207653bbaa92.tar.xz linux-2ca9bb456ada8bcbdc8f77f8fc78207653bbaa92.zip | |
sysctl: refactor sysctl string writing logic
Consolidate buffer length checking with new-line/end-of-line checking.
Additionally, instead of reading user memory twice, just do the
assignment during the loop.
This change doesn't affect the potential races here. It was already
possible to read a sysctl that was in the middle of a write. In both
cases, the string will always be NULL terminated. The pre-existing race
remains a problem to be solved.
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/devicetree')
0 files changed, 0 insertions, 0 deletions