-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10 Jun 2003 04:17:23 -0000 "Biswaranjan " <biswaranjan_p@rediffmail.com> wrote: >Hi, > is it by anyway possible to find out the struct page* corresponding >to the address of the user space buffer. > > if thats possible i'm thinking of using kmap() to map that page to >the kernel space. then i should be able to manipulate the buffer >from kernel space. is it right..? > >i found a function in mm/memory.c struct page * vmalloc_to_page(void >* vmalloc_addr) thats able to return the struct page* corresponding >to a virtual address. but i think this function is valid only for >kernel address..? If you want to map a user space buffer in kernel space I suggest you to look at the use of kiobufs. You can find a very detailed description of its use on "Linux Device Drivers 2nd edition" which you find freely avaliable online (sorry I don't have handy the URL but Google will help you). Regards. - -- Angelo Dell'Aera 'buffer' Antifork Research, Inc. http://buffer.antifork.org PGP information in e-mail header -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) iD8DBQE+5aVipONIzxnBXKIRAqFTAKDEklp80X/QZFeBIQXjbFK8IFTlCQCfey8K pmS7htinMOVWm1f6MJ7f0/g= =bVDG -----END PGP SIGNATURE----- -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
