New option --dump-bin, dump the DMI data to a sparse binary file.

1 files changed, 42 insertions, 0 deletions

diff --git a/util.c b/util.c
index 9eda714..9266b67 100644
--- a/util.c
+++ b/util.c
@@ -163,3 +163,45 @@ void *mem_chunk(size_t base, size_t len, const char *devmem)
 	
 	return p;
 }
+
+int write_dump(size_t base, size_t len, const void *data, const char *dumpfile)
+{
+	FILE *f;
+	
+	f=fopen(dumpfile, "r+b");
+	if(!f && errno==ENOENT)
+		f=fopen(dumpfile, "wb");
+	if(!f)
+	{
+		fprintf(stderr, "%s: ", dumpfile);
+		perror("fopen");
+		return -1;
+	}
+
+	if(fseek(f, base, SEEK_SET)!=0)
+	{
+		fprintf(stderr, "%s: ", dumpfile);
+		perror("fseek");
+		goto err_close;
+	}
+
+	if(fwrite(data, len, 1, f)!=1)
+	{
+		fprintf(stderr, "%s: ", dumpfile);
+		perror("fwrite");
+		goto err_close;
+	}
+
+	if(fclose(f))
+	{
+		fprintf(stderr, "%s: ", dumpfile);
+		perror("fclose");
+		return -1;
+	}
+
+	return 0;
+
+err_close:
+ 	fclose(f);
+ 	return -1;
+}