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[PATCH] file: modify struct fown_struct to use a struct pid

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File handles can be requested to send sigio and sigurg to processes.  By
tracking the destination processes using struct pid instead of pid_t we make
the interface safe from all potential pid wrap around problems.

Signed-off-by: Eric W. Biederman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Eric W. Biederman 2006-10-02 02:17:15 -07:00 • committed by Linus Torvalds
commit 609d7fa956
8 changed files with 59 additions and 34 deletions
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2
drivers/net/tun.c
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@ -697,7 +697,7 @@ static int tun_chr_fasync(int fd, struct file *file, int on)
return ret;
if (on) {
ret = f_setown(file, current->pid, 0);
ret = __f_setown(file, task_pid(current), PIDTYPE_PID, 0);
if (ret)
return ret;
tun->flags |= TUN_FASYNC;