Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: copy_from_user() fixu | Date | Mon, 24 Aug 1998 16:38:47 -0700 (PDT) |
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> > > > > > ??? What's wrong with EFAULT? > > > > It usually goes undetected. > > Yeah, but only by buggy programmes. I trap for error codes in all my > code: I don't want a SEGV, I want to handle it gracefully. You could > just as well say when malloc(3) fails, send a SEGV, since "some" > applications will ignore the failure case. > Besides, EFAULT is the standard for Unix. Surely SEGV is non-Posix? >
No, it's not. EFAULT is non-POSIX: it exposes the difference between system calls and library functions.
EFAULT is triggered by the same thing as SIGSEGV; the distinction is artificial.
-hpa
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