On Mon, Apr 23, 2012 at 03:45:00PM +0530, Arun KS wrote: > Hello Guys, > > We all know that when an application writes to stdout, data ends up in > the console. > > Okey so if I m on my development board and if I run an app, all the > prints comes to the console (eg /dev/ttyS0). > If I m on any server using ssh and all apps prints comes on my putty > (eg through /dev/pts/176). > > Where is the code which maps fd 1 to the console in kernel? > If you guys have any pointers, please share. > > While opening a device (for eg /dev/something), the vfs calls that > drivers, whose major and minor number matches. > But in case of stdout, how vfs resolves the write to the fd 1 and send > it to the corresponding console driver? > > Thanks, > Arun It's in init/main.c, around line 823. "strace" is a useful tool for trying to figure out what exactly a user space process does. The man pages of various system calls (open, fork, exec, dup, etc.) may also provide valuable information. Thanks, Jonathan Neuschäfer _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
