Three LSMs register the implementations for the "capget" hook: AppArmor,
SELinux, and the normal capability code. Looking at the function
implementations we may observe that the first parameter "target" is not
changing.
Mark the first argument "target" of LSM hook security_capget() as
"const" since it will not be changing in the LSM hook.
cap_capget() LSM hook declaration exceeds the 80 characters per line
limit. Split the function declaration to multple lines to decrease the
line length.
Signed-off-by: Khadija Kamran <[email protected]>
---
Changes in v2:
- Squash the patches 1/2 and 2/2 into a single patch
- Simplify the commit message
include/linux/lsm_hook_defs.h | 2 +-
include/linux/security.h | 7 ++++---
kernel/capability.c | 2 +-
security/apparmor/lsm.c | 2 +-
security/commoncap.c | 2 +-
security/security.c | 2 +-
security/selinux/hooks.c | 2 +-
7 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
index 6bb55e61e8e8..fd3844e11077 100644
--- a/include/linux/lsm_hook_defs.h
+++ b/include/linux/lsm_hook_defs.h
@@ -36,7 +36,7 @@ LSM_HOOK(int, 0, binder_transfer_file, const struct cred *from,
LSM_HOOK(int, 0, ptrace_access_check, struct task_struct *child,
unsigned int mode)
LSM_HOOK(int, 0, ptrace_traceme, struct task_struct *parent)
-LSM_HOOK(int, 0, capget, struct task_struct *target, kernel_cap_t *effective,
+LSM_HOOK(int, 0, capget, const struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
LSM_HOOK(int, 0, capset, struct cred *new, const struct cred *old,
const kernel_cap_t *effective, const kernel_cap_t *inheritable,
diff --git a/include/linux/security.h b/include/linux/security.h
index e2734e9e44d5..fef65d0e522d 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -145,7 +145,8 @@ extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
extern int cap_ptrace_traceme(struct task_struct *parent);
-extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
+extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
+ kernel_cap_t *inheritable, kernel_cap_t *permitted);
extern int cap_capset(struct cred *new, const struct cred *old,
const kernel_cap_t *effective,
const kernel_cap_t *inheritable,
@@ -271,7 +272,7 @@ int security_binder_transfer_file(const struct cred *from,
const struct cred *to, struct file *file);
int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
int security_ptrace_traceme(struct task_struct *parent);
-int security_capget(struct task_struct *target,
+int security_capget(const struct task_struct *target,
kernel_cap_t *effective,
kernel_cap_t *inheritable,
kernel_cap_t *permitted);
@@ -553,7 +554,7 @@ static inline int security_ptrace_traceme(struct task_struct *parent)
return cap_ptrace_traceme(parent);
}
-static inline int security_capget(struct task_struct *target,
+static inline int security_capget(const struct task_struct *target,
kernel_cap_t *effective,
kernel_cap_t *inheritable,
kernel_cap_t *permitted)
diff --git a/kernel/capability.c b/kernel/capability.c
index 3e058f41df32..67bdee3414dd 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -112,7 +112,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
int ret;
if (pid && (pid != task_pid_vnr(current))) {
- struct task_struct *target;
+ const struct task_struct *target;
rcu_read_lock();
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index f431251ffb91..12dd96c3b2f0 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -144,7 +144,7 @@ static int apparmor_ptrace_traceme(struct task_struct *parent)
}
/* Derived from security/commoncap.c:cap_capget */
-static int apparmor_capget(struct task_struct *target, kernel_cap_t *effective,
+static int apparmor_capget(const struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
{
struct aa_label *label;
diff --git a/security/commoncap.c b/security/commoncap.c
index 0b3fc2f3afe7..5fd64d3e5bfd 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -197,7 +197,7 @@ int cap_ptrace_traceme(struct task_struct *parent)
* This function retrieves the capabilities of the nominated task and returns
* them to the caller.
*/
-int cap_capget(struct task_struct *target, kernel_cap_t *effective,
+int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
{
const struct cred *cred;
diff --git a/security/security.c b/security/security.c
index d5ff7ff45b77..fb2d93b481f1 100644
--- a/security/security.c
+++ b/security/security.c
@@ -893,7 +893,7 @@ int security_ptrace_traceme(struct task_struct *parent)
*
* Return: Returns 0 if the capability sets were successfully obtained.
*/
-int security_capget(struct task_struct *target,
+int security_capget(const struct task_struct *target,
kernel_cap_t *effective,
kernel_cap_t *inheritable,
kernel_cap_t *permitted)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 79b4890e9936..ff42d49f1b41 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2056,7 +2056,7 @@ static int selinux_ptrace_traceme(struct task_struct *parent)
SECCLASS_PROCESS, PROCESS__PTRACE, NULL);
}
-static int selinux_capget(struct task_struct *target, kernel_cap_t *effective,
+static int selinux_capget(const struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
{
return avc_has_perm(current_sid(), task_sid_obj(target),
--
2.34.1
On Mon, Aug 7, 2023 at 2:59 AM Khadija Kamran <[email protected]> wrote:
>
> Three LSMs register the implementations for the "capget" hook: AppArmor,
> SELinux, and the normal capability code. Looking at the function
> implementations we may observe that the first parameter "target" is not
> changing.
>
> Mark the first argument "target" of LSM hook security_capget() as
> "const" since it will not be changing in the LSM hook.
>
> cap_capget() LSM hook declaration exceeds the 80 characters per line
> limit. Split the function declaration to multple lines to decrease the
"multiple" :)
Don't worry, I'll fix that in the merge.
There is one more nitpick below, but I think this looks good. I'll
give this a few days to see if John can ACK the AppArmor bits, but if
we don't hear from him by mid-week I'll plan to merge this.
Thanks!
> line length.
>
> Signed-off-by: Khadija Kamran <[email protected]>
> ---
> Changes in v2:
> - Squash the patches 1/2 and 2/2 into a single patch
> - Simplify the commit message
>
> include/linux/lsm_hook_defs.h | 2 +-
> include/linux/security.h | 7 ++++---
> kernel/capability.c | 2 +-
> security/apparmor/lsm.c | 2 +-
> security/commoncap.c | 2 +-
> security/security.c | 2 +-
> security/selinux/hooks.c | 2 +-
> 7 files changed, 10 insertions(+), 9 deletions(-)
>
> diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
> index 6bb55e61e8e8..fd3844e11077 100644
> --- a/include/linux/lsm_hook_defs.h
> +++ b/include/linux/lsm_hook_defs.h
> @@ -36,7 +36,7 @@ LSM_HOOK(int, 0, binder_transfer_file, const struct cred *from,
> LSM_HOOK(int, 0, ptrace_access_check, struct task_struct *child,
> unsigned int mode)
> LSM_HOOK(int, 0, ptrace_traceme, struct task_struct *parent)
> -LSM_HOOK(int, 0, capget, struct task_struct *target, kernel_cap_t *effective,
> +LSM_HOOK(int, 0, capget, const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> LSM_HOOK(int, 0, capset, struct cred *new, const struct cred *old,
> const kernel_cap_t *effective, const kernel_cap_t *inheritable,
> diff --git a/include/linux/security.h b/include/linux/security.h
> index e2734e9e44d5..fef65d0e522d 100644
> --- a/include/linux/security.h
> +++ b/include/linux/security.h
> @@ -145,7 +145,8 @@ extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
> extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
> extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
> extern int cap_ptrace_traceme(struct task_struct *parent);
> -extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
> +extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
> + kernel_cap_t *inheritable, kernel_cap_t *permitted);
Don't resubmit the patch just for this, I'll fix it during the merge,
but generally nice to make sure the wrapped lines are aligned with the
previous line; look at the security_cap_get() declaration (below) in
this patch to see an example.
> extern int cap_capset(struct cred *new, const struct cred *old,
> const kernel_cap_t *effective,
> const kernel_cap_t *inheritable,
> @@ -271,7 +272,7 @@ int security_binder_transfer_file(const struct cred *from,
> const struct cred *to, struct file *file);
> int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
> int security_ptrace_traceme(struct task_struct *parent);
> -int security_capget(struct task_struct *target,
> +int security_capget(const struct task_struct *target,
> kernel_cap_t *effective,
> kernel_cap_t *inheritable,
> kernel_cap_t *permitted);
> @@ -553,7 +554,7 @@ static inline int security_ptrace_traceme(struct task_struct *parent)
> return cap_ptrace_traceme(parent);
> }
>
> -static inline int security_capget(struct task_struct *target,
> +static inline int security_capget(const struct task_struct *target,
> kernel_cap_t *effective,
> kernel_cap_t *inheritable,
> kernel_cap_t *permitted)
> diff --git a/kernel/capability.c b/kernel/capability.c
> index 3e058f41df32..67bdee3414dd 100644
> --- a/kernel/capability.c
> +++ b/kernel/capability.c
> @@ -112,7 +112,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
> int ret;
>
> if (pid && (pid != task_pid_vnr(current))) {
> - struct task_struct *target;
> + const struct task_struct *target;
>
> rcu_read_lock();
>
> diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
> index f431251ffb91..12dd96c3b2f0 100644
> --- a/security/apparmor/lsm.c
> +++ b/security/apparmor/lsm.c
> @@ -144,7 +144,7 @@ static int apparmor_ptrace_traceme(struct task_struct *parent)
> }
>
> /* Derived from security/commoncap.c:cap_capget */
> -static int apparmor_capget(struct task_struct *target, kernel_cap_t *effective,
> +static int apparmor_capget(const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> {
> struct aa_label *label;
> diff --git a/security/commoncap.c b/security/commoncap.c
> index 0b3fc2f3afe7..5fd64d3e5bfd 100644
> --- a/security/commoncap.c
> +++ b/security/commoncap.c
> @@ -197,7 +197,7 @@ int cap_ptrace_traceme(struct task_struct *parent)
> * This function retrieves the capabilities of the nominated task and returns
> * them to the caller.
> */
> -int cap_capget(struct task_struct *target, kernel_cap_t *effective,
> +int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> {
> const struct cred *cred;
> diff --git a/security/security.c b/security/security.c
> index d5ff7ff45b77..fb2d93b481f1 100644
> --- a/security/security.c
> +++ b/security/security.c
> @@ -893,7 +893,7 @@ int security_ptrace_traceme(struct task_struct *parent)
> *
> * Return: Returns 0 if the capability sets were successfully obtained.
> */
> -int security_capget(struct task_struct *target,
> +int security_capget(const struct task_struct *target,
> kernel_cap_t *effective,
> kernel_cap_t *inheritable,
> kernel_cap_t *permitted)
> diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> index 79b4890e9936..ff42d49f1b41 100644
> --- a/security/selinux/hooks.c
> +++ b/security/selinux/hooks.c
> @@ -2056,7 +2056,7 @@ static int selinux_ptrace_traceme(struct task_struct *parent)
> SECCLASS_PROCESS, PROCESS__PTRACE, NULL);
> }
>
> -static int selinux_capget(struct task_struct *target, kernel_cap_t *effective,
> +static int selinux_capget(const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> {
> return avc_has_perm(current_sid(), task_sid_obj(target),
> --
> 2.34.1
--
paul-moore.com
On 8/6/23 23:59, Khadija Kamran wrote:
> Three LSMs register the implementations for the "capget" hook: AppArmor,
> SELinux, and the normal capability code. Looking at the function
> implementations we may observe that the first parameter "target" is not
> changing.
>
> Mark the first argument "target" of LSM hook security_capget() as
> "const" since it will not be changing in the LSM hook.
>
> cap_capget() LSM hook declaration exceeds the 80 characters per line
> limit. Split the function declaration to multple lines to decrease the
> line length.
>
> Signed-off-by: Khadija Kamran <[email protected]>
Acked-by: John Johansen <[email protected]>
> ---
> Changes in v2:
> - Squash the patches 1/2 and 2/2 into a single patch
> - Simplify the commit message
>
> include/linux/lsm_hook_defs.h | 2 +-
> include/linux/security.h | 7 ++++---
> kernel/capability.c | 2 +-
> security/apparmor/lsm.c | 2 +-
> security/commoncap.c | 2 +-
> security/security.c | 2 +-
> security/selinux/hooks.c | 2 +-
> 7 files changed, 10 insertions(+), 9 deletions(-)
>
> diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
> index 6bb55e61e8e8..fd3844e11077 100644
> --- a/include/linux/lsm_hook_defs.h
> +++ b/include/linux/lsm_hook_defs.h
> @@ -36,7 +36,7 @@ LSM_HOOK(int, 0, binder_transfer_file, const struct cred *from,
> LSM_HOOK(int, 0, ptrace_access_check, struct task_struct *child,
> unsigned int mode)
> LSM_HOOK(int, 0, ptrace_traceme, struct task_struct *parent)
> -LSM_HOOK(int, 0, capget, struct task_struct *target, kernel_cap_t *effective,
> +LSM_HOOK(int, 0, capget, const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> LSM_HOOK(int, 0, capset, struct cred *new, const struct cred *old,
> const kernel_cap_t *effective, const kernel_cap_t *inheritable,
> diff --git a/include/linux/security.h b/include/linux/security.h
> index e2734e9e44d5..fef65d0e522d 100644
> --- a/include/linux/security.h
> +++ b/include/linux/security.h
> @@ -145,7 +145,8 @@ extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
> extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
> extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
> extern int cap_ptrace_traceme(struct task_struct *parent);
> -extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
> +extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
> + kernel_cap_t *inheritable, kernel_cap_t *permitted);
> extern int cap_capset(struct cred *new, const struct cred *old,
> const kernel_cap_t *effective,
> const kernel_cap_t *inheritable,
> @@ -271,7 +272,7 @@ int security_binder_transfer_file(const struct cred *from,
> const struct cred *to, struct file *file);
> int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
> int security_ptrace_traceme(struct task_struct *parent);
> -int security_capget(struct task_struct *target,
> +int security_capget(const struct task_struct *target,
> kernel_cap_t *effective,
> kernel_cap_t *inheritable,
> kernel_cap_t *permitted);
> @@ -553,7 +554,7 @@ static inline int security_ptrace_traceme(struct task_struct *parent)
> return cap_ptrace_traceme(parent);
> }
>
> -static inline int security_capget(struct task_struct *target,
> +static inline int security_capget(const struct task_struct *target,
> kernel_cap_t *effective,
> kernel_cap_t *inheritable,
> kernel_cap_t *permitted)
> diff --git a/kernel/capability.c b/kernel/capability.c
> index 3e058f41df32..67bdee3414dd 100644
> --- a/kernel/capability.c
> +++ b/kernel/capability.c
> @@ -112,7 +112,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
> int ret;
>
> if (pid && (pid != task_pid_vnr(current))) {
> - struct task_struct *target;
> + const struct task_struct *target;
>
> rcu_read_lock();
>
> diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
> index f431251ffb91..12dd96c3b2f0 100644
> --- a/security/apparmor/lsm.c
> +++ b/security/apparmor/lsm.c
> @@ -144,7 +144,7 @@ static int apparmor_ptrace_traceme(struct task_struct *parent)
> }
>
> /* Derived from security/commoncap.c:cap_capget */
> -static int apparmor_capget(struct task_struct *target, kernel_cap_t *effective,
> +static int apparmor_capget(const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> {
> struct aa_label *label;
> diff --git a/security/commoncap.c b/security/commoncap.c
> index 0b3fc2f3afe7..5fd64d3e5bfd 100644
> --- a/security/commoncap.c
> +++ b/security/commoncap.c
> @@ -197,7 +197,7 @@ int cap_ptrace_traceme(struct task_struct *parent)
> * This function retrieves the capabilities of the nominated task and returns
> * them to the caller.
> */
> -int cap_capget(struct task_struct *target, kernel_cap_t *effective,
> +int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> {
> const struct cred *cred;
> diff --git a/security/security.c b/security/security.c
> index d5ff7ff45b77..fb2d93b481f1 100644
> --- a/security/security.c
> +++ b/security/security.c
> @@ -893,7 +893,7 @@ int security_ptrace_traceme(struct task_struct *parent)
> *
> * Return: Returns 0 if the capability sets were successfully obtained.
> */
> -int security_capget(struct task_struct *target,
> +int security_capget(const struct task_struct *target,
> kernel_cap_t *effective,
> kernel_cap_t *inheritable,
> kernel_cap_t *permitted)
> diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> index 79b4890e9936..ff42d49f1b41 100644
> --- a/security/selinux/hooks.c
> +++ b/security/selinux/hooks.c
> @@ -2056,7 +2056,7 @@ static int selinux_ptrace_traceme(struct task_struct *parent)
> SECCLASS_PROCESS, PROCESS__PTRACE, NULL);
> }
>
> -static int selinux_capget(struct task_struct *target, kernel_cap_t *effective,
> +static int selinux_capget(const struct task_struct *target, kernel_cap_t *effective,
> kernel_cap_t *inheritable, kernel_cap_t *permitted)
> {
> return avc_has_perm(current_sid(), task_sid_obj(target),
On Mon, Aug 07, 2023 at 07:09:33PM -0400, Paul Moore wrote:
> On Mon, Aug 7, 2023 at 2:59 AM Khadija Kamran <[email protected]> wrote:
> >
> >
> >
> > cap_capget() LSM hook declaration exceeds the 80 characters per line
> > limit. Split the function declaration to multple lines to decrease the
>
> "multiple" :)
>
> Don't worry, I'll fix that in the merge.
>
Hey Paul,
Thank you. :)
> There is one more nitpick below, but I think this looks good. I'll
> give this a few days to see if John can ACK the AppArmor bits, but if
> we don't hear from him by mid-week I'll plan to merge this.
>
> Thanks!
>
> > line length.
> >
> > Signed-off-by: Khadija Kamran <[email protected]>
> > ---
> > Changes in v2:
> > - Squash the patches 1/2 and 2/2 into a single patch
> > - Simplify the commit message
> >
> > include/linux/lsm_hook_defs.h | 2 +-
> > include/linux/security.h | 7 ++++---
> > kernel/capability.c | 2 +-
> > security/apparmor/lsm.c | 2 +-
> > security/commoncap.c | 2 +-
> > security/security.c | 2 +-
> > security/selinux/hooks.c | 2 +-
> > 7 files changed, 10 insertions(+), 9 deletions(-)
> >
> > diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
> > index 6bb55e61e8e8..fd3844e11077 100644
> > --- a/include/linux/lsm_hook_defs.h
> > +++ b/include/linux/lsm_hook_defs.h
> > @@ -36,7 +36,7 @@ LSM_HOOK(int, 0, binder_transfer_file, const struct cred *from,
> > LSM_HOOK(int, 0, ptrace_access_check, struct task_struct *child,
> > unsigned int mode)
> > LSM_HOOK(int, 0, ptrace_traceme, struct task_struct *parent)
> > -LSM_HOOK(int, 0, capget, struct task_struct *target, kernel_cap_t *effective,
> > +LSM_HOOK(int, 0, capget, const struct task_struct *target, kernel_cap_t *effective,
> > kernel_cap_t *inheritable, kernel_cap_t *permitted)
> > LSM_HOOK(int, 0, capset, struct cred *new, const struct cred *old,
> > const kernel_cap_t *effective, const kernel_cap_t *inheritable,
> > diff --git a/include/linux/security.h b/include/linux/security.h
> > index e2734e9e44d5..fef65d0e522d 100644
> > --- a/include/linux/security.h
> > +++ b/include/linux/security.h
> > @@ -145,7 +145,8 @@ extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
> > extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
> > extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
> > extern int cap_ptrace_traceme(struct task_struct *parent);
> > -extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
> > +extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
> > + kernel_cap_t *inheritable, kernel_cap_t *permitted);
>
> Don't resubmit the patch just for this, I'll fix it during the merge,
> but generally nice to make sure the wrapped lines are aligned with the
> previous line; look at the security_cap_get() declaration (below) in
> this patch to see an example.
Okay noted.
Regards,
Khadija
>
> > extern int cap_capset(struct cred *new, const struct cred *old,
> > const kernel_cap_t *effective,
> > const kernel_cap_t *inheritable,
> > @@ -271,7 +272,7 @@ int security_binder_transfer_file(const struct cred *from,
> > const struct cred *to, struct file *file);
> > int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
> > int security_ptrace_traceme(struct task_struct *parent);
> > -int security_capget(struct task_struct *target,
> > +int security_capget(const struct task_struct *target,
> > kernel_cap_t *effective,
> > kernel_cap_t *inheritable,
> > kernel_cap_t *permitted);
> > @@ -553,7 +554,7 @@ static inline int security_ptrace_traceme(struct task_struct *parent)
> > return cap_ptrace_traceme(parent);
> > }
> >
> > -static inline int security_capget(struct task_struct *target,
> > +static inline int security_capget(const struct task_struct *target,
> > kernel_cap_t *effective,
> > kernel_cap_t *inheritable,
> > kernel_cap_t *permitted)
> > diff --git a/kernel/capability.c b/kernel/capability.c
> > index 3e058f41df32..67bdee3414dd 100644
> > --- a/kernel/capability.c
> > +++ b/kernel/capability.c
> > @@ -112,7 +112,7 @@ static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
> > int ret;
> >
> > if (pid && (pid != task_pid_vnr(current))) {
> > - struct task_struct *target;
> > + const struct task_struct *target;
> >
> > rcu_read_lock();
> >
> > diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
> > index f431251ffb91..12dd96c3b2f0 100644
> > --- a/security/apparmor/lsm.c
> > +++ b/security/apparmor/lsm.c
> > @@ -144,7 +144,7 @@ static int apparmor_ptrace_traceme(struct task_struct *parent)
> > }
> >
> > /* Derived from security/commoncap.c:cap_capget */
> > -static int apparmor_capget(struct task_struct *target, kernel_cap_t *effective,
> > +static int apparmor_capget(const struct task_struct *target, kernel_cap_t *effective,
> > kernel_cap_t *inheritable, kernel_cap_t *permitted)
> > {
> > struct aa_label *label;
> > diff --git a/security/commoncap.c b/security/commoncap.c
> > index 0b3fc2f3afe7..5fd64d3e5bfd 100644
> > --- a/security/commoncap.c
> > +++ b/security/commoncap.c
> > @@ -197,7 +197,7 @@ int cap_ptrace_traceme(struct task_struct *parent)
> > * This function retrieves the capabilities of the nominated task and returns
> > * them to the caller.
> > */
> > -int cap_capget(struct task_struct *target, kernel_cap_t *effective,
> > +int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
> > kernel_cap_t *inheritable, kernel_cap_t *permitted)
> > {
> > const struct cred *cred;
> > diff --git a/security/security.c b/security/security.c
> > index d5ff7ff45b77..fb2d93b481f1 100644
> > --- a/security/security.c
> > +++ b/security/security.c
> > @@ -893,7 +893,7 @@ int security_ptrace_traceme(struct task_struct *parent)
> > *
> > * Return: Returns 0 if the capability sets were successfully obtained.
> > */
> > -int security_capget(struct task_struct *target,
> > +int security_capget(const struct task_struct *target,
> > kernel_cap_t *effective,
> > kernel_cap_t *inheritable,
> > kernel_cap_t *permitted)
> > diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> > index 79b4890e9936..ff42d49f1b41 100644
> > --- a/security/selinux/hooks.c
> > +++ b/security/selinux/hooks.c
> > @@ -2056,7 +2056,7 @@ static int selinux_ptrace_traceme(struct task_struct *parent)
> > SECCLASS_PROCESS, PROCESS__PTRACE, NULL);
> > }
> >
> > -static int selinux_capget(struct task_struct *target, kernel_cap_t *effective,
> > +static int selinux_capget(const struct task_struct *target, kernel_cap_t *effective,
> > kernel_cap_t *inheritable, kernel_cap_t *permitted)
> > {
> > return avc_has_perm(current_sid(), task_sid_obj(target),
> > --
> > 2.34.1
>
> --
> paul-moore.com
On Tue, Aug 8, 2023 at 1:33 AM Khadija Kamran <[email protected]> wrote:
>
> On Mon, Aug 07, 2023 at 07:09:33PM -0400, Paul Moore wrote:
> > On Mon, Aug 7, 2023 at 2:59 AM Khadija Kamran <[email protected]> wrote:
> > >
> > >
> > >
> > > cap_capget() LSM hook declaration exceeds the 80 characters per line
> > > limit. Split the function declaration to multple lines to decrease the
> >
> > "multiple" :)
> >
> > Don't worry, I'll fix that in the merge.
> >
>
> Hey Paul,
> Thank you. :)
... and now it's merged :)
--
paul-moore.com