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Separate utility functions

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topjohnwu
2017-03-04 21:16:59 +08:00
parent 9f91c8b59d
commit c6d4740b0c
8 changed files with 180 additions and 179 deletions
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12
jni/magiskboot/hexpatch.c
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@@ -14,7 +14,7 @@ static unsigned hex2ascii(char c, char d) {
return high + low;
}
static void hexstr2str(char *hex, unsigned char *str) {
static void hexstr2str(const char *hex, unsigned char *str) {
char buf = 0;
for(int i = 0, length = strlen(hex); i < length; ++i){
if(i % 2){
@@ -25,12 +25,11 @@ static void hexstr2str(char *hex, unsigned char *str) {
}
}
void hexpatch(char * image, char *from, char *to) {
int fd = open(image, O_RDWR), patternsize = strlen(from) / 2, patchsize = strlen(to) / 2;
size_t filesize = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
void hexpatch(const char *image, const char *from, const char *to) {
int patternsize = strlen(from) / 2, patchsize = strlen(to) / 2;
size_t filesize;
unsigned char *file, *pattern, *patch;
file = mmap(NULL, filesize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
mmap_rw(image, &file, &filesize);
pattern = malloc(patternsize);
patch = malloc(patchsize);
hexstr2str(from, pattern);
@@ -46,5 +45,4 @@ void hexpatch(char * image, char *from, char *to) {
munmap(file, filesize);
free(pattern);
free(patch);
close(fd);
}