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