From 36d3fca4fc2153f96b8528f3a406a744423f7c90 Mon Sep 17 00:00:00 2001
From: Kroese <kroese@users.noreply.github.com>
Date: Mon, 17 Mar 2025 11:19:04 +0100
Subject: [PATCH] fix: Fallback to POSIX fallocate (#932)

---
 src/disk.sh    | 22 ++++++++++++++--------
 src/install.sh | 10 ++++++----
 src/reset.sh   |  1 +
 3 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/src/disk.sh b/src/disk.sh
index e65c6b2..1f2da5c 100644
--- a/src/disk.sh
+++ b/src/disk.sh
@@ -141,10 +141,12 @@ createDisk() {
       else
 
         # Create an empty file
-        if ! fallocate -l "$DATA_SIZE" "$DISK_FILE"; then
-          if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
-            rm -f "$DISK_FILE"
-            error "$FAIL" && exit 77
+        if ! fallocate -l "$DATA_SIZE" "$DISK_FILE" &>/dev/null; then
+          if ! fallocate -l -x "$DATA_SIZE" "$DISK_FILE"; then
+            if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
+              rm -f "$DISK_FILE"
+              error "$FAIL" && exit 77
+            fi
           fi
         fi
 
@@ -219,9 +221,11 @@ resizeDisk() {
       else
 
         # Resize file by allocating more space
-        if ! fallocate -l "$DATA_SIZE" "$DISK_FILE"; then
-          if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
-            error "$FAIL" && exit 75
+        if ! fallocate -l "$DATA_SIZE" "$DISK_FILE" &>/dev/null; then
+          if ! fallocate -l -x "$DATA_SIZE" "$DISK_FILE"; then
+            if ! truncate -s "$DATA_SIZE" "$DISK_FILE"; then
+              error "$FAIL" && exit 75
+            fi
           fi
         fi
 
@@ -296,8 +300,10 @@ convertDisk() {
     if [[ "$ALLOCATE" != [Nn]* ]]; then
       # Work around qemu-img bug
       CUR_SIZE=$(stat -c%s "$TMP_FILE")
-      if ! fallocate -l "$CUR_SIZE" "$TMP_FILE"; then
+      if ! fallocate -l "$CUR_SIZE" "$TMP_FILE" &>/dev/null; then
+        if ! fallocate -l -x "$CUR_SIZE" "$TMP_FILE"; then
           error "Failed to allocate $CUR_SIZE bytes for $DISK_DESC image $TMP_FILE"
+        fi
       fi
     fi
   fi
diff --git a/src/install.sh b/src/install.sh
index 82203a7..79709e9 100644
--- a/src/install.sh
+++ b/src/install.sh
@@ -328,10 +328,12 @@ if [[ "${FS,,}" == "btrfs" ]]; then
   fi
 fi
 
-if ! fallocate -l "$SYSTEM_SIZE" "$SYSTEM"; then
-  if ! truncate -s "$SYSTEM_SIZE" "$SYSTEM"; then
-    rm -f "$SYSTEM"
-    error "Could not allocate file $SYSTEM for the system disk." && exit 98
+if ! fallocate -l "$SYSTEM_SIZE" "$SYSTEM" &>/dev/null; then
+  if ! fallocate -l -x "$SYSTEM_SIZE" "$SYSTEM"; then
+    if ! truncate -s "$SYSTEM_SIZE" "$SYSTEM"; then
+      rm -f "$SYSTEM"
+      error "Could not allocate file $SYSTEM for the system disk." && exit 98
+    fi
   fi
 fi
 
diff --git a/src/reset.sh b/src/reset.sh
index 2c79284..693f1e3 100644
--- a/src/reset.sh
+++ b/src/reset.sh
@@ -63,6 +63,7 @@ if [ -z "${CPU// /}" ] && grep -qi "model:" <<< "$CPI"; then
 fi
 
 CPU="${CPU// CPU/}"
+CPU="${CPU// 6 Core/}"
 CPU="${CPU// 8 Core/}"
 CPU="${CPU// 16 Core/}"
 CPU="${CPU// 32 Core/}"