Is there a way to block every input of a process from the standard input? I mean, not closing it's stdin file descriptor, but avoid any input that comes from the standard input device.
1
- I strongly disagree with the close votes.o11c– o11c2015-07-10 02:05:24 +00:00Commented Jul 10, 2015 at 2:05
Add a comment |
2 Answers
Assign the /dev/null device to STDIN.
2 Comments
user31986
The question is about doing it in kernel. Could you be more elaborate on how this could be done in kernel?
user3344003
How do you want to identify the process to change? I presume that you do not want to change every process.
You can modify this function in fork.c:
static int copy_files(unsigned long clone_flags, struct task_struct *tsk)
You need to do this just before you return from the function:
files_fdtable(newf)->fd[0] = NULL This is the way it could be done. But take it with a pinch of salt!
