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kernel: added new prctl CMD_GET_MANAGER_UID to get the uid of the crowned manager (#2673)

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Rifat Azad
2025-07-11 19:32:58 +06:00
committed by GitHub
parent 9014c663d1
commit 9034086ad4
2 changed files with 12 additions and 0 deletions
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11
kernel/core_hook.c
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@@ -413,6 +413,17 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
return 0; return 0;
} }
if (arg2 == CMD_GET_MANAGER_UID) {
uid_t manager_uid = ksu_get_manager_uid();
if (copy_to_user(arg3, &manager_uid, sizeof(manager_uid))) {
pr_err("get manager uid failed\n");
}
if (copy_to_user(result, &reply_ok, sizeof(reply_ok))) {
pr_err("prctl reply error, cmd: %lu\n", arg2);
}
return 0;
}
// all other cmds are for 'root manager' // all other cmds are for 'root manager'
if (!from_manager) { if (!from_manager) {
return 0; return 0;

1
kernel/ksu.h
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@@ -23,6 +23,7 @@
#define CMD_UID_SHOULD_UMOUNT 13 #define CMD_UID_SHOULD_UMOUNT 13
#define CMD_IS_SU_ENABLED 14 #define CMD_IS_SU_ENABLED 14
#define CMD_ENABLE_SU 15 #define CMD_ENABLE_SU 15
#define CMD_GET_MANAGER_UID 16
#define EVENT_POST_FS_DATA 1 #define EVENT_POST_FS_DATA 1
#define EVENT_BOOT_COMPLETED 2 #define EVENT_BOOT_COMPLETED 2