Kees Cook <keescook@xxxxxxxxxxxx> writes: > Hi, > > While looking at the code paths for the proposed O_MAYEXEC flag, I saw > some things that looked like they should be fixed up. > > exec: Change uselib(2) IS_SREG() failure to EACCES > This just regularizes the return code on uselib(2). > > exec: Relocate S_ISREG() check > This moves the S_ISREG() check even earlier than it was already. > > exec: Relocate path_noexec() check > This adds the path_noexec() check to the same place as the > S_ISREG() check. > > fs: Include FMODE_EXEC when converting flags to f_mode > This seemed like an oversight, but I suspect there is some > reason I couldn't find for why FMODE_EXEC doesn't get set in > f_mode and just stays in f_flags. So I took a look at this series. I think the belt and suspenders approach of adding code in open and then keeping it in exec and uselib is probably wrong. My sense of the situation is a belt and suspenders approach is more likely to be confusing and result in people making mistakes when maintaining the code than to actually be helpful. Eric
