On Jan 30, 2008 11:21 AM, arshad hussain <arshad.super@xxxxxxxxx> wrote: > > > > On 1/29/08, Manish Katiyar <mkatiyar@xxxxxxxxx> wrote: > > Hi, > > > > Is it possible to print or access the environment variables of a > > process from kernel module. I know it can be done from userspace, but > > if there is a running process I don't know if there is any way to > > access/print the environment of a process from userspace. So I thought > > if it is possible to write a module which accepts a pid during load > > and then prints its environment variables. > > > > I tried looking at task_struct to see which member holds the > > environment, but cudnt get much. Any help appreciated. > > > > -- > > Thanks & Regards, > > Hi Manish, > > It is not possiable to access environment variable > of a process, even if the kernel is running in that > process context. getenv() and friends are userspace > buddys only as you have already pointed out. > Hi Arshad, But since parents environment variables are copied into childs address space, I was expecting do_fork to copy some environment related field too of task_struct. Also If I am not wrong this behaviour is also governed by whether you have passed CLONE_VM flag to do_fork or not. So there must be something which checks this flag and does the copy. Gurus please correct if I am wrong. Thanks > Thanks > > > > -- Thanks & Regards, ******************************************** Manish Katiyar ( http://mkatiyar.googlepages.com ) 3rd Floor, Fair Winds Block EGL Software Park Off Intermediate Ring Road Bangalore 560071, India *********************************************** -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
