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kernel: allow to change manager in debug mode (#111)

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Ylarod
2023-01-25 14:50:44 +08:00
committed by GitHub
parent 423f4aaf1f
commit 47a736f567
2 changed files with 16 additions and 5 deletions
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17
kernel/ksu.c
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@@ -115,11 +115,6 @@ static bool become_manager(char *pkg)
return false; return false;
} }
if (ksu_is_manager_uid_valid()) {
pr_info("manager already exist: %d\n", ksu_manager_uid);
return is_manager();
}
buf = (char *)kmalloc(PATH_MAX, GFP_ATOMIC); buf = (char *)kmalloc(PATH_MAX, GFP_ATOMIC);
if (!buf) { if (!buf) {
pr_err("kalloc path failed.\n"); pr_err("kalloc path failed.\n");
@@ -195,6 +190,18 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
pr_info("option: 0x%x, cmd: %ld\n", option, arg2); pr_info("option: 0x%x, cmd: %ld\n", option, arg2);
if (arg2 == CMD_BECOME_MANAGER) { if (arg2 == CMD_BECOME_MANAGER) {
// quick check
if (is_manager()) {
if (copy_to_user(result, &reply_ok, sizeof(reply_ok))) {
pr_err("become_manager: prctl reply error\n");
}
return 0;
}
if (ksu_is_manager_uid_valid()) {
pr_info("manager already exist: %d\n", ksu_manager_uid);
return 0;
}
// someone wants to be root manager, just check it! // someone wants to be root manager, just check it!
// arg3 should be `/data/data/<manager_package_name>` // arg3 should be `/data/data/<manager_package_name>`
char param[128]; char param[128];

4
kernel/ksu.h
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@@ -24,7 +24,11 @@ extern uid_t ksu_manager_uid;
static inline bool ksu_is_manager_uid_valid() static inline bool ksu_is_manager_uid_valid()
{ {
#ifndef CONFIG_KSU_DEBUG
return ksu_manager_uid != INVALID_UID; return ksu_manager_uid != INVALID_UID;
#else
return false; // always allow in debug mode
#endif
} }
static inline uid_t ksu_get_manager_uid() static inline uid_t ksu_get_manager_uid()