GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-27 17:11:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[PATCH] sanitize unshare_files/reset_files_struct

Browse source 
* let unshare_files() give caller the displaced files_struct
* don't bother with grabbing reference only to drop it in the
  caller if it hadn't been shared in the first place
* in that form unshare_files() is trivially implemented via
  unshare_fd(), so we eliminate the duplicate logics in fork.c
* reset_files_struct() is not just only called for current;
  it will break the system if somebody ever calls it for anything
  else (we can't modify ->files of somebody else).  Lose the
  task_struct * argument.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2008-04-22 05:31:30 -04:00
parent fd8328be87
commit 3b1253880b
5 changed files with 34 additions and 47 deletions
Download patch file Download diff file Expand all files Collapse all files

3
kernel/exit.c
View file

@ -507,8 +507,9 @@ void put_files_struct(struct files_struct *files)
}
}
void reset_files_struct(struct task_struct *tsk, struct files_struct *files)
void reset_files_struct(struct files_struct *files)
{
struct task_struct *tsk = current;
struct files_struct *old;
old = tsk->files;