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| author | Kees Cook <keescook@chromium.org> | 2018-04-10 16:34:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:37 -0700 |
| commit | b83838313386f617d6bd8201be7f5b532059bba1 (patch) | |
| tree | d38c1ea9433292b4a33efe3d3fad48bf8fb1f314 /fs/exec.c | |
| parent | 8f2af155b513583e8b149a384551f13e1ac5dc72 (diff) | |
| download | lwn-b83838313386f617d6bd8201be7f5b532059bba1.tar.gz lwn-b83838313386f617d6bd8201be7f5b532059bba1.zip | |
exec: introduce finalize_exec() before start_thread()
Provide a final callback into fs/exec.c before start_thread() takes
over, to handle any last-minute changes, like the coming restoration of
the stack limit.
Link: http://lkml.kernel.org/r/1518638796-20819-3-git-send-email-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Cc: Brad Spengler <spender@grsecurity.net>
Cc: Greg KH <greg@kroah.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/exec.c b/fs/exec.c index f4469ab88c7a..422ad79a7a03 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1384,6 +1384,12 @@ void setup_new_exec(struct linux_binprm * bprm) } EXPORT_SYMBOL(setup_new_exec); +/* Runs immediately before start_thread() takes over. */ +void finalize_exec(struct linux_binprm *bprm) +{ +} +EXPORT_SYMBOL(finalize_exec); + /* * Prepare credentials and lock ->cred_guard_mutex. * install_exec_creds() commits the new creds and drops the lock. |