2f970f7ab8
* refact
* sort inlude
* update
* unregister execve kprobe
* update log
* don't unregister if not in kprobe
* opt for no kprobe
* opt for no kprobe
* stop debug
* don't forget to call ksu_uid_observer_exit
* rename core to core_hook
* direct call do_persistent_allow_list
* add prefix
* use getter, add warn
* add wrapper
* run clang-format
clang-format --style="{BasedOnStyle: InheritParentConfig, SortIncludes: true}" -i kernel/**/*.[ch]
* try fix wsa x64 build
81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
#include "linux/cred.h"
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#include "linux/gfp.h"
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#include "linux/printk.h"
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#include "linux/slab.h"
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#include "linux/uidgid.h"
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#include "linux/version.h"
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#include "linux/fdtable.h"
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#include "linux/fs.h"
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#include "linux/rcupdate.h"
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#include "apk_sign.h"
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#include "ksu.h"
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#include "manager.h"
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uid_t ksu_manager_uid = INVALID_UID;
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bool become_manager(char *pkg)
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{
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struct fdtable *files_table;
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int i = 0;
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struct path files_path;
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char *cwd;
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char *buf;
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bool result = false;
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// must be zygote's direct child, otherwise any app can fork a new process and
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// open manager's apk
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if (task_uid(current->real_parent).val != 0) {
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pr_info("parent is not zygote!\n");
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return false;
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}
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buf = (char *)kmalloc(PATH_MAX, GFP_ATOMIC);
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if (!buf) {
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pr_err("kalloc path failed.\n");
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return false;
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}
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files_table = files_fdtable(current->files);
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// todo: use iterate_fd
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while (files_table->fd[i] != NULL) {
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files_path = files_table->fd[i]->f_path;
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if (!d_is_reg(files_path.dentry)) {
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i++;
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continue;
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}
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cwd = d_path(&files_path, buf, PATH_MAX);
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if (startswith(cwd, "/data/app/") == 0 &&
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endswith(cwd, "/base.apk") == 0) {
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// we have found the apk!
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pr_info("found apk: %s", cwd);
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if (!strstr(cwd, pkg)) {
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pr_info("apk path not match package name!\n");
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i++;
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continue;
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}
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if (is_manager_apk(cwd) == 0) {
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// check passed
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uid_t uid = current_uid().val;
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pr_info("manager uid: %d\n", uid);
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ksu_set_manager_uid(uid);
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result = true;
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goto clean;
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} else {
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pr_info("manager signature invalid!");
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}
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break;
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}
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i++;
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}
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clean:
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kfree(buf);
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return result;
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}
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