From 8c705b4ad191d7b837cd68ad1664ae7b5a423a8d Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Tue, 24 Sep 2024 04:32:46 +0200
Subject: [PATCH] Flush on writes to hard disk images, fixes partition creation
 on the Samsung SPC7700LP-W.

---
 src/disk/hdd_image.c          | 3 +++
 src/disk/minivhd/minivhd_io.c | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/src/disk/hdd_image.c b/src/disk/hdd_image.c
index f82b2d3f2..7c2618969 100644
--- a/src/disk/hdd_image.c
+++ b/src/disk/hdd_image.c
@@ -577,6 +577,7 @@ hdd_image_write(uint8_t id, uint32_t sector, uint32_t count, uint8_t *buffer)
         }
 
         num_write          = fwrite(buffer, 512, count, hdd_images[id].file);
+        fflush(hdd_images[id].file);
         hdd_images[id].pos = sector + num_write;
     }
 }
@@ -618,6 +619,8 @@ hdd_image_zero(uint8_t id, uint32_t sector, uint32_t count)
             hdd_images[id].pos = sector + i;
             fwrite(empty_sector, 512, 1, hdd_images[id].file);
         }
+
+        fflush(hdd_images[id].file);
     }
 }
 
diff --git a/src/disk/minivhd/minivhd_io.c b/src/disk/minivhd/minivhd_io.c
index ffc6aba44..1a349dbc4 100644
--- a/src/disk/minivhd/minivhd_io.c
+++ b/src/disk/minivhd/minivhd_io.c
@@ -89,6 +89,8 @@ mvhd_write_empty_sectors(FILE *f, int sector_count)
 
     for (int i = 0; i < sector_count; i++)
         fwrite(zero_bytes, sizeof zero_bytes, 1, f);
+
+    fflush(f);
 }
 
 /**
@@ -141,6 +143,7 @@ write_bat_entry(MVHDMeta *vhdm, int blk)
 
     mvhd_fseeko64(vhdm->f, table_offset, SEEK_SET);
     fwrite(&offset, sizeof offset, 1, vhdm->f);
+    fflush(vhdm->f);
 }
 
 /**
@@ -197,6 +200,8 @@ create_block(MVHDMeta *vhdm, int blk)
     /* We no longer have a sparse block. Update that BAT! */
     vhdm->block_offset[blk] = sect_offset;
     write_bat_entry(vhdm, blk);
+
+    fflush(vhdm->f);
 }
 
 int
@@ -317,6 +322,7 @@ mvhd_fixed_write(MVHDMeta *vhdm, uint32_t offset, int num_sectors, void *in_buff
     addr = (int64_t)offset * MVHD_SECTOR_SIZE;
     mvhd_fseeko64(vhdm->f, addr, SEEK_SET);
     fwrite(in_buff, transfer_sectors * MVHD_SECTOR_SIZE, 1, vhdm->f);
+    fflush(vhdm->f);
 
     return truncated_sectors;
 }
@@ -376,6 +382,8 @@ mvhd_sparse_diff_write(MVHDMeta *vhdm, uint32_t offset, int num_sectors, void *i
     /* And write the sector bitmap for the last block we visited to disk */
     write_curr_sect_bitmap(vhdm);
 
+    fflush(vhdm->f);
+
     return truncated_sectors;
 }