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| author | Emese Revfy <re.emese@gmail.com> | 2016-06-20 21:42:34 +0300 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2016-10-11 00:51:45 +0300 |
| commit | 0766f788eb727e2e330d55d30545db65bcf2623f (patch) | |
| tree | 0436ae3b005558a4fb827459fe5c602037fe764a /include/linux/fdtable.h | |
| parent | 38addce8b600ca335dc86fa3d48c890f1c6fa1f4 (diff) | |
| download | linux-0766f788eb727e2e330d55d30545db65bcf2623f.tar.xz | |
latent_entropy: Mark functions with __latent_entropy
The __latent_entropy gcc attribute can be used only on functions and
variables. If it is on a function then the plugin will instrument it for
gathering control-flow entropy. If the attribute is on a variable then
the plugin will initialize it with random contents. The variable must
be an integer, an integer array type or a structure with integer fields.
These specific functions have been selected because they are init
functions (to help gather boot-time entropy), are called at unpredictable
times, or they have variable loops, each of which provide some level of
latent entropy.
Signed-off-by: Emese Revfy <re.emese@gmail.com>
[kees: expanded commit message]
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'include/linux/fdtable.h')
| -rw-r--r-- | include/linux/fdtable.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h index 5295535b60c6..9852c7e33466 100644 --- a/include/linux/fdtable.h +++ b/include/linux/fdtable.h @@ -105,7 +105,7 @@ struct files_struct *get_files_struct(struct task_struct *); void put_files_struct(struct files_struct *fs); void reset_files_struct(struct files_struct *); int unshare_files(struct files_struct **); -struct files_struct *dup_fd(struct files_struct *, int *); +struct files_struct *dup_fd(struct files_struct *, int *) __latent_entropy; void do_close_on_exec(struct files_struct *); int iterate_fd(struct files_struct *, unsigned, int (*)(const void *, struct file *, unsigned), |