Mail Archives: cygwin/2003/01/22/10:39:05
On Tue, Jan 21, 2003 at 11:27:09PM -0500, Igor Pechtchanski wrote:
>On Tue, 21 Jan 2003, Rolf Campbell wrote:
>
>> I'm trying to write an application that can run some code when a certain
>> memory address is read or written.
>> My first theory was to use mprotect to remove read/write permissions
>> from a section and then catch SIGSEGV, but siginfo_t doesn't seem to be
>> defined.
>> Is hooking a signal using the 'sa_sigaction' member of 'struct
>> sigaction' supported in CygWin?
>>
>> I noticed that struct siginfo_t is declared in sys/signal.h, but inside
>> a couple of #ifdef:
>> #if defined(__rtems__)
>> #if defined(_POSIX_REALTIME_SIGNALS)
>>
>> And it doesn't have the member that I need anyways (si_addr).
>>
>> Does anyone know of any other ways of trapping reads/writes to/from
>> memory regions?
>>
>> -Rolf Campbell
>
>No, sigaction is not supported on Cygwin. It's on the TODO list.
That's overstating the situation. sigaction() is certainly supported in
cygwin. The sa_sigaction field in the sigaction struct is not.
cgf
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