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| author | Oleg Nesterov <oleg@redhat.com> | 2011-03-06 18:02:54 +0100 |
|---|---|---|
| committer | Oleg Nesterov <oleg@redhat.com> | 2011-04-09 15:53:56 +0200 |
| commit | 0e028465d18b7c6797fcbdea632299d16097c5cd (patch) | |
| tree | d03a1f0f688e9c4a780b2a1a3ef8354378b0ad42 /include/linux/binfmts.h | |
| parent | ba2d01629d0d167598cfea85adc7926822bbfc45 (diff) | |
| download | linux-0e028465d18b7c6797fcbdea632299d16097c5cd.tar.gz | |
exec: unify do_execve/compat_do_execve code
Add the appropriate members into struct user_arg_ptr and teach
get_user_arg_ptr() to handle is_compat = T case correctly.
This allows us to remove the compat_do_execve() code from fs/compat.c
and reimplement compat_do_execve() as the trivial wrapper on top of
do_execve_common(is_compat => true).
In fact, this fixes another (minor) bug. "compat_uptr_t str" can
overflow after "str += len" in compat_copy_strings() if a 64bit
application execs via sys32_execve().
Unexport acct_arg_size() and get_arg_page(), fs/compat.c doesn't
need them any longer.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Tested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Diffstat (limited to 'include/linux/binfmts.h')
| -rw-r--r-- | include/linux/binfmts.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index c3d6512eded1..8845613fd7e3 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -60,10 +60,6 @@ struct linux_binprm { unsigned long loader, exec; }; -extern void acct_arg_size(struct linux_binprm *bprm, unsigned long pages); -extern struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, - int write); - #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT) |