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improve: mounting system, compatibility; remove: logging on release (#111)

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This commit adds numerous improvements to the state of hidden'ility of ReZygisk, and also for compatibility. Recommended to check #111 for more information.
This commit is contained in:
Pedro.js
2025-03-29 12:17:57 -03:00
committed by GitHub
parent 9aafc279d5
commit 886e2f8396
20 changed files with 621 additions and 412 deletions
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78
zygiskd/src/zygiskd.c
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@@ -382,6 +382,7 @@ void zygiskd_start(char *restrict argv[]) {
return;
}
bool first_process = true;
while (1) {
int client_fd = accept(socket_fd, NULL, NULL);
if (client_fd == -1) {
@@ -437,51 +438,26 @@ void zygiskd_start(char *restrict argv[]) {
break;
}
/* TODO: Move to another thread and save client fds to an epoll list
so that we can, in a single-thread, deal with multiple logcats */
case RequestLogcatFd: {
uint8_t level = 0;
ssize_t ret = read_uint8_t(client_fd, &level);
ASSURE_SIZE_READ_BREAK("RequestLogcatFd", "level", ret, sizeof(level));
char tag[128 + 1];
ret = read_string(client_fd, tag, sizeof(tag));
if (ret == -1) {
LOGE("Failed reading logcat tag.\n");
close(client_fd);
break;
}
char message[1024 + 1];
ret = read_string(client_fd, message, sizeof(message));
if (ret == -1) {
LOGE("Failed reading logcat message.\n");
close(client_fd);
break;
}
__android_log_print(level, tag, "%s", message);
break;
}
case GetProcessFlags: {
uint32_t uid = 0;
ssize_t ret = read_uint32_t(client_fd, &uid);
ASSURE_SIZE_READ_BREAK("GetProcessFlags", "uid", ret, sizeof(uid));
uint32_t flags = 0;
if (uid_is_manager(uid)) {
flags |= PROCESS_IS_MANAGER;
if (first_process) {
flags |= PROCESS_IS_FIRST_STARTED;
first_process = false;
} else {
if (uid_granted_root(uid)) {
flags |= PROCESS_GRANTED_ROOT;
}
if (uid_should_umount(uid)) {
flags |= PROCESS_ON_DENYLIST;
if (uid_is_manager(uid)) {
flags |= PROCESS_IS_MANAGER;
} else {
if (uid_granted_root(uid)) {
flags |= PROCESS_GRANTED_ROOT;
}
if (uid_should_umount(uid)) {
flags |= PROCESS_ON_DENYLIST;
}
}
}
@@ -671,11 +647,35 @@ void zygiskd_start(char *restrict argv[]) {
break;
}
break;
}
case GetCleanNamespace: {
pid_t pid = 0;
ssize_t ret = read_uint32_t(client_fd, (uint32_t *)&pid);
ASSURE_SIZE_READ_BREAK("GetCleanNamespace", "pid", ret, sizeof(pid));
uint8_t mns_state = 0;
ret = read_uint8_t(client_fd, &mns_state);
ASSURE_SIZE_READ_BREAK("GetCleanNamespace", "mns_state", ret, sizeof(mns_state));
uint32_t our_pid = (uint32_t)getpid();
ret = write_uint32_t(client_fd, (uint32_t)our_pid);
ASSURE_SIZE_WRITE_BREAK("GetCleanNamespace", "our_pid", ret, sizeof(our_pid));
if ((enum MountNamespaceState)mns_state == Clean) {
save_mns_fd(pid, Rooted, impl);
save_mns_fd(pid, Module, impl);
}
uint32_t clean_namespace_fd = (uint32_t)save_mns_fd(pid, (enum MountNamespaceState)mns_state, impl);
ret = write_uint32_t(client_fd, clean_namespace_fd);
ASSURE_SIZE_WRITE_BREAK("GetCleanNamespace", "clean_namespace_fd", ret, sizeof(clean_namespace_fd));
break;
}
}
if (action != RequestCompanionSocket && action != RequestLogcatFd) close(client_fd);
if (action != RequestCompanionSocket) close(client_fd);
continue;
}