https://community.hpe.com/t5/operating-system-linux/write-protect-shared-memory-section/m-p/3255991#M94164 <P>Yes, mprotect can protect whole pages. That's what's used for guard pages for thread stacks.<BR /><BR />You probably got this info from Don in your other thread:<BR /><A href="http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=580158" target="_blank">http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=580158</A></P> Sun, 25 Sep 2011 19:48:59 GMT Dennis Handly 2011-09-25T19:48:59Z https://community.hpe.com/t5/operating-system-linux/write-protect-shared-memory-section/m-p/3255990#M94163 Hi,<BR /><BR />I create shared memory with read and write.<BR /><BR />But I want particular area of memory alone to be protected so that Others cannot overwrite that section.<BR /><BR />I came across mmap / mprotect .<BR />Can any one tell whether with mmap/ mprotect it can be achieve or any other solution ?<BR /><BR />I want this code to be portable too!<BR /> Thu, 22 Apr 2004 02:44:29 GMT https://community.hpe.com/t5/operating-system-linux/write-protect-shared-memory-section/m-p/3255990#M94163 Srinivasan S_1 2004-04-22T02:44:29Z https://community.hpe.com/t5/operating-system-linux/write-protect-shared-memory-section/m-p/3255991#M94164 <P>Yes, mprotect can protect whole pages. That's what's used for guard pages for thread stacks.<BR /><BR />You probably got this info from Don in your other thread:<BR /><A href="http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=580158" target="_blank">http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=580158</A></P> Sun, 25 Sep 2011 19:48:59 GMT https://community.hpe.com/t5/operating-system-linux/write-protect-shared-memory-section/m-p/3255991#M94164 Dennis Handly 2011-09-25T19:48:59Z