Bug#1101158: glib2.0: Can not open files from smb share in since 2.84.0-2

[Ian Wienand]

Source: glib2.0
Version: 2.84.0-2
Severity: normal
X-Debbugs-Cc: ian at wienand.org

Dear Maintainer,

I can no longer upload files from Firefox 136.0.2 from a smb share I
have mounted, or open them in Gimp (this is the two things I've found).

I can enter the upload dialog, browse the file and see it, but when I
upload it gives "The file does not have read permissions" in a modal
(I'm sure that's a spurious error) and in the journal logs I can see

---
Mar 24 15:14:30 framework firefox-bin[18770]: GFileInfo created without standard::content-type
Mar 24 15:14:30 framework firefox-bin[18770]: file ../../../gio/gfileinfo.c: line 1821 (g_file_info_get_content_type): should not be reached
Mar 24 15:14:30 framework firefox.desktop[18770]: [Parent 18770, Main Thread] WARNING: GFileInfo created without standard::content-type: 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201
Mar 24 15:14:30 framework firefox.desktop[18770]: [Parent 18770, Main Thread] WARNING: file ../../../gio/gfileinfo.c: line 1821 (g_file_info_get_content_type): should not be reached: 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201
---

I tried with firefox-beta (137.0b9) and I get the same thing

---
(firefox-beta:14257): GLib-GIO-CRITICAL **: 14:19:44.355: GFileInfo created without standard::content-type
[Parent 14257, Main Thread] WARNING: file ../../../gio/gfileinfo.c: line 1821 (g_file_info_get_content_type): should not be reached: 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201

(firefox-beta:14257): GLib-GIO-CRITICAL **: 14:19:44.355: file ../../../gio/gfileinfo.c: line 1821 (g_file_info_get_content_type): should not be reached
[Parent 14257, Main Thread] WARNING: GFileInfo created without standard::content-type: 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201
---

Out of interest I also tried with GTK_USE_PORTAL=1 and I see the "new"
dialog box then, but when I try to upload it just dies with no other
details.  In the logs there is

---
[Parent 22691, Main Thread] WARNING: invalid cast from 'GtkFileChooserNative' to 'GtkWindow': 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201

(firefox-beta:22691): GLib-GObject-CRITICAL **: 15:18:41.707: invalid cast from 'GtkFileChooserNative' to 'GtkWindow'
[Parent 22691, Main Thread] WARNING: gtk_message_dialog_new: assertion 'parent == NULL || GTK_IS_WINDOW (parent)' failed: 'glib warning', file /builds/worker/checkouts/gecko/toolkit/xre/nsSigHandlers.cpp:201
---

I think that might be a separate issue, just adding for completness ...

I then tried opening with gimp which seems to use a different file
chooser again, and it gives the same error in the logs

---
Mar 24 15:27:24 framework gimp-3.0[24342]: GFileInfo created without standard::content-type
Mar 24 15:27:24 framework gimp-3.0[24342]: file ../../../gio/gfileinfo.c: line 1821 (g_file_info_get_content_type): should not be reached
---

and gives an error "the file doesn't exist".

Note this only seems to happen for files on the mounted smb share.
>From nautilus I can see them, open them, etc. just fine.  It's just
the upload dialog AFAICT -- I haven't triggered it any other way.

I also tried Chrome ... and the window just exits and the upload never
happens; but I can't get a message out of the logs for that though?

All of this makes me think it is not a gimp/firefox specific thing,
it's something lower in glib?

-i

-- System Information:
Debian Release: trixie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.19-amd64 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_WARN
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled