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#include "util.h"
#include <stdio.h>
#include <stdlib.h>
#include "libfdt.h"
#include "libufdt_sysdeps.h"
static char *load_file_contents(FILE *fp, size_t *len_ptr) {
// Gets the file size.
fseek(fp, 0, SEEK_END);
size_t len = ftell(fp);
fseek(fp, 0, SEEK_SET);
char *buf = malloc(len);
if (buf == NULL) {
return NULL;
}
if (fread(buf, len, 1, fp) != 1) {
free(buf);
return NULL;
}
if (len_ptr) {
*len_ptr = len;
}
return buf;
}
char *load_file(const char *filename, size_t *len_ptr) {
FILE *fp = fopen(filename, "r");
if (!fp) {
return NULL;
}
char *buf = load_file_contents(fp, len_ptr);
fclose(fp);
return buf;
}
int write_buf_to_file(const char *filename,
const void *buf, size_t buf_size) {
int ret = 0;
FILE *fout = NULL;
fout = fopen(filename, "wb");
if (!fout) {
ret = 1;
goto end;
}
if (fwrite(buf, 1, buf_size, fout) < 1) {
ret = 2;
goto end;
}
end:
if (fout) fclose(fout);
return ret;
}
int write_fdt_to_file(const char *filename, const void *fdt) {
return write_buf_to_file(filename, fdt, fdt_totalsize(fdt));
}
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