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kernel: precise trigger timing of post-fs-data (#118)

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* kernel: add report_event cmd

* ksud: report event

* kernel: trigger on_post_fs_data

* ksud: comment unused code

* [skip ci] run clang-format

Signed-off-by: Ylarod <me@ylarod.cn>

* ci: use custom key to sign official bootimgs

* format ksud

* reject non root

* remove

Signed-off-by: Ylarod <me@ylarod.cn>
This commit is contained in:
Ylarod
2023-01-26 11:29:02 +08:00
committed by GitHub
parent 22b66b6672
commit db600d5ea0
19 changed files with 170 additions and 37 deletions
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17
kernel/ksud.c
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@@ -4,6 +4,7 @@
#include "linux/err.h"
#include "linux/fs.h"
#include "linux/kprobes.h"
#include "linux/printk.h"
#include "linux/types.h"
#include "linux/uaccess.h"
#include "linux/version.h"
@@ -11,8 +12,8 @@
#include "allowlist.h"
#include "arch.h"
#include "selinux/selinux.h"
#include "klog.h" // IWYU pragma: keep
#include "selinux/selinux.h"
static const char KERNEL_SU_RC[] =
"\n"
@@ -47,6 +48,18 @@ static bool vfs_read_hook = true;
static bool execveat_hook = true;
#endif
void on_post_fs_data(void)
{
static bool done = false;
if (done) {
pr_info("on_post_fs_data already done");
return;
}
done = true;
pr_info("ksu_load_allow_list");
ksu_load_allow_list();
}
int ksu_handle_execveat_ksud(int *fd, struct filename **filename_ptr,
void *argv, void *envp, int *flags)
{
@@ -85,7 +98,7 @@ int ksu_handle_execveat_ksud(int *fd, struct filename **filename_ptr,
!memcmp(filename->name, app_process, sizeof(app_process) - 1)) {
first_app_process = false;
pr_info("exec app_process, /data prepared!\n");
ksu_load_allow_list();
on_post_fs_data(); // we keep this for old ksud
stop_execve_hook();
}