Thanks for the reply Prashant. What is the purpose of leaving sizeof(void*) bytes? Regards, Dang On 6/7/06, s prashant <sprashant16@xxxxxxxxx> wrote:
The arguments are copied onto the bprm.pages using the copy_strings api. bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof (void*) indicates the total bytes that the pages can accomadate. The arrangement of the arguments onto the pages is as shown in the figure. pages ------------------------- --- | sizeof (void*) | ^ |-----------------------| | | argv[0] | | |-----------------------| 31 | argv[1] | | |-----------------------| | | argv[2] | | |=======================| --- | argv[3] | ^ |-----------------------| | | argv[4] | | |-----------------------| 30 | | | | |-----------------------| | | | | | |=======================| --- | | | | | | | | | | | | | | | | | | |=======================| --- | | ^ | | | | | | | | 0 | | | | | | ------------------------ --- The above info is w.r.t 2.4.21 kernel. Anybody please correct me if i am wrong. regards prashant. On 6/5/06, Dang <linuxdang@xxxxxxxxx> wrote: > > > > Hi, > I have a requirement of reading command line arguments passed while invoking a binary, inside load_elf_binary(). I tried to read kernel 2.4 code but i am confused how data is stored inside the pages (linux_bprm) > Can anybody point to some document / tutorial or if possible brief me about how it is done? > > Regards, > Dang -- S Prashant email:- prashant@xxxxxxxxxxxxx SolidCore Techsoft Systems India(Pvt)Ltd A-16, Mohan Co-operative Industrial Estate, Mathura Road, New Delhi, 11 00 44 Phone:91 11 51678443
-- Regards, Dang -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
