what im trying to do is executing an app from a user mode handwritten app using execve sys call and then i want to ack the kernel whether the execve was succ or not. but as we know that the execve overlays its image on the user process ,so in times when the call is succ my kernel doesnt know about it. is there any other way to do so?
On Sat, Aug 29, 2009 at 3:31 AM, Matthias Kaehlcke <[email protected]>wrote: > El Sat, Aug 29, 2009 at 12:40:18AM +0530 krushnaal pai ha dit: > > > i tried to printf the return values of error codes but that wont work > bcoz > > the elf does run successfully(no errors) > > As execve doesnt return anything on a successful execve sys call,is > there > > a way to check whether it was successful or not. > > neglect the fact that i can see the elf running > > as the calls of the exec() family substitute the current executable > when executed with success, you can only check the failure case from > the program calling exec(). if exec() returns at all it returns with > exit status -1, otherwise it has been executed with success and the > 'new' program is running. > > -- > Matthias Kaehlcke > Embedded Linux Engineer > Barcelona > > They that can give up essential liberty to obtain a little > temporary safety deserve neither liberty nor safety > (Benjamin Franklin) > .''`. > using free software / Debian GNU/Linux | http://debian.org : :' : > `. `'` > gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `- >
