Readme

README.txt

@@ -1,4 +1,24 @@
-Simple dd-like image writer with additional security checks.
+# Simple dd-like image writer with additional security checks.
+
+```
+writeimg v0.2.0, Rev. 5323932-dirty
+In honor of SwePwnage - the OG disk destroyer
+Copyright (C) 2026 Imbus, BSD-2-Clause
+Build date: 2026-02-07
+
+Usage:
+   writeimg [-v] -d <device> <file.img>
+
+Args:
+   <file.img>          Binary image file
+   -v                  Verify only
+   -d device           Target block device
+   -h, --help          Print this help message
+   -n, --noconfirm     Do not ask for premission
+   -V, --version       Print version
+```
+
+## Testing
 
 dd if=/dev/zero of=./disk.img bs=1M count=1024
 losetup -fP ./disk.img

writeimg.c

@@ -175,7 +175,8 @@ int perform_write(write_job_t *job) {
 
         int cmp = memcmp((const void *)job->buffer2, (const void *)job->buffer, (size_t)read_file);
         if (0 != cmp) {
-            fprintf(stderr, "WARNING: File did not verify correctly!\n");
+            fflush(stdout);
+            fprintf(stderr, "\nWARNING: File did not verify correctly!\n");
             exit(EXIT_FAILURE);
         }
     }
@@ -260,11 +261,17 @@ int main(int argc, char *argv[]) {
     }
     close(fd);
 
+    wjob.total_bytes = file_stat.st_size;
+    assert(file_stat.st_size >= 0);
+
     if (!wjob.verify_only)
-        printf("Writing %s to %s\n", wjob.filename, wjob.dev_name);
+        printf("Writing \"%s\" (%.1f MiB) to \"%s\"\n",
+               basename(wjob.filename),
+               BYTES_TO_MIB(wjob.total_bytes),
+               wjob.dev_name);
 
     if (ask_permission && !wjob.verify_only) {
-        printf("Is this okay? (y/n): ");
+        printf("Is this okay? (y/N): ");
         fflush(stdout);
         if ('y' != getchar()) {
             printf("Aborting...\n");
@@ -280,9 +287,6 @@ int main(int argc, char *argv[]) {
     wjob.bufsize = BLOCKSIZE;
     wjob.block_size = BLOCKSIZE;
 
-    wjob.total_bytes = file_stat.st_size;
-    assert(file_stat.st_size >= 0);
-
     perform_write(&wjob);
 
     if (wjob.buffer)