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Compile with unified binary only

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The su binary itself cannot do much, since it still requires a daemon to work
The daemon code will soon be moved to a higher level (out of MagiskSU), so there is no point in creating a separate binary
This commit is contained in:
topjohnwu 2017-04-06 06:18:39 +08:00
parent 3800b4b45c
commit ed052e0b0b
4 changed files with 0 additions and 107 deletions
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12
Android.mk
View File

@ -1,12 +0,0 @@
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := su
LOCAL_STATIC_LIBRARIES := libselinux libsqlite3
LOCAL_C_INCLUDES := jni/selinux/libselinux/include/ jni/selinux/libsepol/include/ jni/sqlite3/
LOCAL_SRC_FILES := su.c daemon.c activity.c db.c utils.c pts.c
LOCAL_CFLAGS := -DSQLITE_OMIT_LOAD_EXTENSION -DINDEP_BINARY
include $(BUILD_EXECUTABLE)
include jni/selinux/libselinux/Android.mk
include jni/sqlite3/Android.mk

34
indep_bin.h
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@ -1,34 +0,0 @@
/* This file is here because is uses some same macros in magisk.h
* So we have to remove them from su.h.
* However, if we want to build our own binary, we still have to define them
*/
#ifndef _INDEP_BIN_H_
#define _INDEP_BIN_H_
#ifdef LOG_TAG
#undef LOG_TAG
#endif
#define LOG_TAG "su"
// fallback to using /system/bin/log.
// can't use liblog.so because this is a static binary.
#ifndef LOGE
#define LOGE exec_loge
#endif
#ifndef LOGD
#define LOGD exec_logd
#endif
#ifndef LOGW
#define LOGW exec_logw
#endif
#include <errno.h>
#include <string.h>
#define PLOGE(fmt,args...) LOGE(fmt " failed with %d: %s", ##args, errno, strerror(errno))
#define PLOGEV(fmt,err,args...) LOGE(fmt " failed with %d: %s", ##args, err, strerror(err))
int su_main(int argc, char *argv[]);
#endif

52
su.c
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@ -45,12 +45,6 @@
#include "su.h"
#include "utils.h"
#ifdef INDEP_BINARY
int main(int argc, char *argv[]) {
return su_main(argc, argv);
}
#endif
extern int is_daemon;
extern int daemon_from_uid;
extern int daemon_from_pid;
@ -96,52 +90,6 @@ int fork_zero_fucks() {
}
}
void exec_log(char *priority, char* logline) {
int pid;
if ((pid = fork()) == 0) {
int null = open("/dev/null", O_WRONLY | O_CLOEXEC);
dup2(null, STDIN_FILENO);
dup2(null, STDOUT_FILENO);
dup2(null, STDERR_FILENO);
execl("/system/bin/log", "/system/bin/log", "-p", priority, "-t", LOG_TAG, logline, NULL);
_exit(0);
}
int status;
waitpid(pid, &status, 0);
}
void exec_loge(const char* fmt, ...) {
va_list args;
char logline[PATH_MAX];
va_start(args, fmt);
vsnprintf(logline, PATH_MAX, fmt, args);
va_end(args);
exec_log("e", logline);
}
void exec_logw(const char* fmt, ...) {
va_list args;
char logline[PATH_MAX];
va_start(args, fmt);
vsnprintf(logline, PATH_MAX, fmt, args);
va_end(args);
exec_log("w", logline);
}
void exec_logd(const char* fmt, ...) {
#ifdef DEBUG
va_list args;
char logline[PATH_MAX];
va_start(args, fmt);
vsnprintf(logline, PATH_MAX, fmt, args);
va_end(args);
exec_log("d", logline);
#endif
}
static int from_init(struct su_initiator *from) {
char path[PATH_MAX], exe[PATH_MAX];
char args[4096], *argv0, *argv_rest;

9
su.h
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@ -18,12 +18,7 @@
#ifndef SU_h
#define SU_h 1
#ifdef INDEP_BINARY
#include "indep_bin.h"
#else
#include "magisk.h"
#endif
#ifndef AID_SHELL
#define AID_SHELL (get_shell_uid())
@ -167,10 +162,6 @@ static inline char *get_command(const struct su_request *to)
return DEFAULT_SHELL;
}
void exec_loge(const char* fmt, ...);
void exec_logw(const char* fmt, ...);
void exec_logd(const char* fmt, ...);
int run_daemon();
int connect_daemon(int argc, char *argv[], int ppid);
int su_main(int argc, char *argv[]);