cy33hc
130 lines
2.6 KiB
C
130 lines
2.6 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <sys/uio.h>
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#include <orbis/libkernel.h>
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#include <libjbc.h>
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#define SYSCALL(nr, fn) __attribute__((naked)) fn\
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{\
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asm volatile("mov $" #nr ", %rax\nmov %rcx, %r10\nsyscall\nret");\
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}
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SYSCALL(22, static int unmount(const char* path, int flags))
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SYSCALL(378, static int nmount(struct iovec* iov, unsigned int niov, int flags))
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static void build_iovec(struct iovec** iov, int* iovlen, const char* name, const void* val, size_t len) {
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int i;
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if (*iovlen < 0)
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return;
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i = *iovlen;
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*iov = (struct iovec*)realloc(*iov, sizeof **iov * (i + 2));
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if (*iov == NULL) {
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*iovlen = -1;
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return;
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}
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(*iov)[i].iov_base = strdup(name);
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(*iov)[i].iov_len = strlen(name) + 1;
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++i;
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(*iov)[i].iov_base = (void*)val;
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if (len == (size_t)-1) {
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if (val != NULL)
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len = strlen((const char*)val) + 1;
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else
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len = 0;
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}
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(*iov)[i].iov_len = (int)len;
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*iovlen = ++i;
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}
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int mount_large_fs(const char* device, const char* mountpoint, const char* fstype, const char* mode, unsigned int flags)
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{
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struct iovec* iov = NULL;
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int iovlen = 0;
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int ret;
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build_iovec(&iov, &iovlen, "fstype", fstype, -1);
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build_iovec(&iov, &iovlen, "fspath", mountpoint, -1);
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build_iovec(&iov, &iovlen, "from", device, -1);
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build_iovec(&iov, &iovlen, "large", "yes", -1);
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build_iovec(&iov, &iovlen, "timezone", "static", -1);
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build_iovec(&iov, &iovlen, "async", "", -1);
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build_iovec(&iov, &iovlen, "ignoreacl", "", -1);
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if (mode) {
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build_iovec(&iov, &iovlen, "dirmask", mode, -1);
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build_iovec(&iov, &iovlen, "mask", mode, -1);
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}
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ret = nmount(iov, iovlen, flags);
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if (ret < 0) {
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goto error;
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}
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else {
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}
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error:
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return ret;
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}
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// Variables for (un)jailbreaking
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jbc_cred g_Cred;
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jbc_cred g_RootCreds;
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// Verify jailbreak
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static int is_jailbroken()
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{
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FILE *s_FilePointer = fopen("/user/.jailbreak", "w");
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if (!s_FilePointer)
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return 0;
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fclose(s_FilePointer);
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remove("/user/.jailbreak");
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return 1;
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}
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// Jailbreaks creds
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static int jailbreak()
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{
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if (is_jailbroken())
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{
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return 1;
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}
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jbc_get_cred(&g_Cred);
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g_RootCreds = g_Cred;
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jbc_jailbreak_cred(&g_RootCreds);
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jbc_set_cred(&g_RootCreds);
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return (is_jailbroken());
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}
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// Initialize jailbreak
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int initialize_jbc()
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{
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// Pop notification depending on jailbreak result
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if (!jailbreak())
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{
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return 0;
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}
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return 1;
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}
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// Unload libjbc libraries
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void terminate_jbc()
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{
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if (!is_jailbroken())
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return;
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// Restores original creds
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jbc_set_cred(&g_Cred);
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}
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