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Separate pattern logic

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topjohnwu
2017-12-07 01:30:48 +08:00
parent 9f6a27c20d
commit b4c0a255fc
13 changed files with 371 additions and 360 deletions
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18
core/jni/magiskboot/dtb.c
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@@ -5,8 +5,6 @@
#include "magiskboot.h"
#include "utils.h"
extern int check_verity_pattern(const char *s);
static void print_props(const void *fdt, int node, int depth) {
int prop;
fdt_for_each_property_offset(prop, fdt, node) {
@@ -79,21 +77,9 @@ static void dtb_patch(const char *file, int patch) {
int block;
fdt_for_each_subnode(block, fdt, fstab) {
fprintf(stderr, "Found block [%s] in fstab\n", fdt_get_name(fdt, block, NULL));
int skip, value_size;
uint32_t value_size;
char *value = (char *) fdt_getprop(fdt, block, "fsmgr_flags", &value_size);
for (int i = 0; i < value_size; ++i) {
if ((skip = check_verity_pattern(value + i)) > 0) {
if (patch) {
fprintf(stderr, "Remove pattern [%.*s] in [fsmgr_flags]\n", skip, value + i);
memcpy(value + i, value + i + skip, value_size - i - skip);
memset(value + value_size - skip, '\0', skip);
} else {
fprintf(stderr, "Found pattern [%.*s] in [fsmgr_flags]\n", skip, value + i);
i += skip - 1;
}
found = 1;
}
}
found |= patch_verity(&value, &value_size, patch);
}
}
}