See kernel/ptrace.c. You can find routines to access data from other processes' address spaces. See if you can follow the same or reuse them. Regards, Bharata. On Fri, Oct 19, 2001 at 01:49:42AM -0700, Anant wrote: > Hello, > > I need to access the address space of Process say P2 from > Process P1 while trying to take a complete dump of P2 (I have to > migrate P2 to a remote machine) . I have the process descriptor of P2 > available in P1. Using this proc_desc I got the addresses of the > vm_areas associated with P2 but I realized that I will not be able to > use these directly to access the memory regions. Since the local page > descriptor table for P1 will not be having the corresponding entries. I > just require the read permissions for memory regions of P2. Could > somebody please give me hints on the following : > > 1. Where exactly should I look for the Hardware pages of P2? > 2. Will it be sufficient to get the handle of the hardware pages and > then read from the same ? > > 3. Can I map the memory regions of P2 in P1 and if so then how ? > > Any suggestions would be welcome. > > Thanks in Advance, > Anant > > > ===== > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Anant Kumar Gupta > III A - 3,Nehru Nagar, > Ghaziabad. U.P.201 001. Phone : 4720720, 4714714 > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Perfection is my goal and > only Excellence will be Tolerated. > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > - > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > IRC Channel: irc.openprojects.net / #kernelnewbies > Web Page: http://www.kernelnewbies.org/ -- Bharata B Rao, IBM Linux Technology Center, IBM Software Lab, Bangalore. Ph: 91-80-5262355 Ex: 3962 Mail: bharata@in.ibm.com - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
