From b0cc20a18630d98fed562f741c269f916d23fbc2 Mon Sep 17 00:00:00 2001
From: marcin- <marcin.bojara@gmail.com>
Date: Thu, 11 Jun 2026 12:41:32 +0200
Subject: [PATCH] Enable `PKGSYSTEM_ENABLE_FSYNC=0` optimization for HDDs
 during MIME database updates

---
 .../misc/shared-mime-info/comar/package.py    |  9 +++-
 .../misc/shared-mime-info/comar/pakhandler.py | 44 ++++++++++++++++++-
 desktop/misc/shared-mime-info/pspec.xml       |  7 +++
 3 files changed, 58 insertions(+), 2 deletions(-)

diff --git a/desktop/misc/shared-mime-info/comar/package.py b/desktop/misc/shared-mime-info/comar/package.py
index 81fb2db012..81e37dabeb 100644
--- a/desktop/misc/shared-mime-info/comar/package.py
+++ b/desktop/misc/shared-mime-info/comar/package.py
@@ -4,4 +4,11 @@ import os
 
 # Update global mime databases, mime database format may change (0.70)
 def postInstall(fromVersion, fromRelease, toVersion, toRelease):
-    os.system("/usr/bin/update-mime-database /usr/share/mime")
+    cmd = (
+        "disk=$(findmnt -n -o SOURCE / | sed 's/[0-9]*$//'); "
+        "env $( [ -f \"/sys/block/${disk##*/}/queue/rotational\" ] && "
+        "[ \"$(cat \"/sys/block/${disk##*/}/queue/rotational\")\" = \"1\" ] && "
+        "echo PKGSYSTEM_ENABLE_FSYNC=0 ) "
+        "/usr/bin/update-mime-database /usr/share/mime"
+    )
+    os.system(cmd)
diff --git a/desktop/misc/shared-mime-info/comar/pakhandler.py b/desktop/misc/shared-mime-info/comar/pakhandler.py
index 226588331a..90c88078ed 100644
--- a/desktop/misc/shared-mime-info/comar/pakhandler.py
+++ b/desktop/misc/shared-mime-info/comar/pakhandler.py
@@ -2,6 +2,47 @@
 
 import piksemel
 import os
+import re
+import subprocess
+
+def is_root_on_hdd():
+    """Returns True if the root partition (/) is located on an HDD."""
+    try:
+        # 1. Get the source device for the mount point /
+        result = subprocess.run(
+            ["findmnt", "-n", "-o", "SOURCE", "/"],
+            capture_output=True, text=True, check=True
+        )
+        source = result.stdout.strip()
+        if not source:
+            return False
+
+        # 2. Strip the partition number (for /dev/sda1 -> /dev/sda, for /dev/nvme0n1p1 -> /dev/nvme0n1)
+        disk = re.sub(r'p?\d+$', '', source)   # remove trailing digits and optional 'p'
+        disk_name = os.path.basename(disk)
+
+        # 3. Check the contents of the rotational file
+        rotational_path = f"/sys/block/{disk_name}/queue/rotational"
+        if not os.path.exists(rotational_path):
+            return False
+
+        with open(rotational_path, 'r') as f:
+            rotational = int(f.read().strip())
+
+        return rotational == 1
+
+    except Exception:
+        # On any error, assume it's not an HDD (variable won't be set)
+        return False
+
+def run_update_mime_database(path, use_fsync_opt):
+    """Runs /usr/bin/update-mime-database for the given path.
+       If use_fsync_opt is True, sets PKGSYSTEM_ENABLE_FSYNC=0."""
+    cmd = ["/usr/bin/update-mime-database", path]
+    env = os.environ.copy()
+    if use_fsync_opt:
+        env["PKGSYSTEM_ENABLE_FSYNC"] = "0"
+    subprocess.run(cmd, env=env, check=False)
 
 def updateMimeTypes(filepath):
     parse = piksemel.parse(filepath)
@@ -11,8 +52,9 @@ def updateMimeTypes(filepath):
         if "/share/mime/packages/" in path and path.endswith(".xml"):
             paths.add("/%s" % path.partition("packages/")[0])
 
+    hdd = is_root_on_hdd()
     for p in paths:
-        os.system("/usr/bin/update-mime-database %s" % p)
+        run_update_mime_database(p, hdd)
 
 def setupPackage(metapath, filepath):
     updateMimeTypes(filepath)
diff --git a/desktop/misc/shared-mime-info/pspec.xml b/desktop/misc/shared-mime-info/pspec.xml
index 46e2e34992..8af7120e72 100644
--- a/desktop/misc/shared-mime-info/pspec.xml
+++ b/desktop/misc/shared-mime-info/pspec.xml
@@ -63,6 +63,13 @@
     </Package>
 
     <History>
+        <Update release="17">
+            <Date>2026-06-11</Date>
+            <Version>2.4</Version>
+            <Comment>Enable PKGSYSTEM_ENABLE_FSYNC=0 for rotational disks during mime db update</Comment>
+            <Name>Marcin Bojara</Name>
+            <Email>marcin.bojara@gmail.com</Email>
+        </Update>
         <Update release="16">
             <Date>2023-11-16</Date>
             <Version>2.4</Version>