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Cleanup

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This commit is contained in:
topjohnwu 2017-09-15 15:23:50 +08:00
parent 9be2844c82
commit 8c52dfb804
4 changed files with 26 additions and 58 deletions
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8
activity.c
View File

@ -24,6 +24,14 @@
#define AM_PATH "/system/bin/app_process", "/system/bin", "com.android.commands.am.Am"
static char *get_command(const struct su_request *to) {
if (to->command)
return to->command;
if (to->shell)
return to->shell;
return DEFAULT_SHELL;
}
static void silent_run(char* const args[]) {
set_identity(0);
if (fork())

51
misc.c
View File

@ -1,51 +0,0 @@
/* misc.c - Miscellaneous stuffs for su
*/
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "magisk.h"
#include "su.h"
void set_identity(unsigned uid) {
/*
* Set effective uid back to root, otherwise setres[ug]id will fail
* if uid isn't root.
*/
if (seteuid(0)) {
PLOGE("seteuid (root)");
}
if (setresgid(uid, uid, uid)) {
PLOGE("setresgid (%u)", uid);
}
if (setresuid(uid, uid, uid)) {
PLOGE("setresuid (%u)", uid);
}
}
char *get_command(const struct su_request *to) {
if (to->command)
return to->command;
if (to->shell)
return to->shell;
return DEFAULT_SHELL;
}
int fork_zero_fucks() {
int pid = fork();
if (pid) {
int status;
waitpid(pid, &status, 0);
return pid;
} else {
if (fork() != 0)
exit(0);
return 0;
}
}

16
su.c
View File

@ -86,6 +86,22 @@ static void populate_environment(const struct su_context *ctx) {
}
}
void set_identity(unsigned uid) {
/*
* Set effective uid back to root, otherwise setres[ug]id will fail
* if uid isn't root.
*/
if (seteuid(0)) {
PLOGE("seteuid (root)");
}
if (setresgid(uid, uid, uid)) {
PLOGE("setresgid (%u)", uid);
}
if (setresuid(uid, uid, uid)) {
PLOGE("setresuid (%u)", uid);
}
}
static __attribute__ ((noreturn)) void allow() {
char *arg0;

7
su.h
View File

@ -119,6 +119,7 @@ extern int pipefd[2];
int su_daemon_main(int argc, char **argv);
__attribute__ ((noreturn)) void exit2(int status);
void set_identity(unsigned uid);
// su_client.c
@ -136,10 +137,4 @@ void app_send_request(struct su_context *ctx);
void database_check(struct su_context *ctx);
// misc.c
void set_identity(unsigned uid);
char *get_command(const struct su_request *to);
int fork_zero_fucks();
#endif