diff options
author | Kees Cook <keescook@chromium.org> | 2014-06-07 01:37:18 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-07 03:08:13 +0400 |
commit | 2ca9bb456ada8bcbdc8f77f8fc78207653bbaa92 (patch) | |
tree | 05f8bd09ad6e9b24b735d7cf90c3167bade83050 /Documentation/sysctl | |
parent | f88083005ab319abba5d0b2e4e997558245493c8 (diff) |
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/sysctl')
0 files changed, 0 insertions, 0 deletions