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Linux/macOS: enable quick format for file containers

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Allow normal file-hosted containers to use quick format in the Unix volume creation path by sizing the host file with ftruncate before backup headers are written.

Enable the GUI checkbox for normal file containers and honor --quick in text mode. Update the Unix HTML documentation for the weaker deniability properties of sparse or unwritten host regions.
This commit is contained in:
Mounir IDRASSI
2026-05-21 16:17:52 +09:00
parent 1fd2fb06cd
commit 79bee911be
10 changed files with 67 additions and 12 deletions
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src/Main/UserInterface.cpp
+7 -3
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@@ -1219,7 +1219,7 @@ const FileManager fileManagers[] = {
" Inexperienced users should use the graphical user interface to create a hidden\n"
" volume. When using the text user interface, the following procedure must be\n"
" followed to create a hidden volume:\n"
" 1) Create an outer volume with no filesystem.\n"
" 1) Create an outer volume with no filesystem and without --quick.\n"
" 2) Create a hidden volume within the outer volume.\n"
" 3) Mount the outer volume using hidden volume protection.\n"
" 4) Create a filesystem on the virtual device of the outer volume.\n"
@@ -1428,8 +1428,12 @@ const FileManager fileManagers[] = {
" See also options -p and --protect-hidden.\n"
"\n"
"--quick\n"
" Do not encrypt free space when creating a device-hosted volume. This option\n"
" must not be used when creating an outer volume.\n"
" Do not encrypt free space when creating a normal file-hosted or\n"
" device-hosted volume. This option must not be used when creating an outer\n"
" volume; text mode cannot infer that a normal volume will later be\n"
" used as an outer volume. For file containers, Quick Format may create sparse\n"
" or unwritten host regions; actual disk savings depend on host filesystem\n"
" sparse-file support, and later writes can fail if host space runs out.\n"
"\n"
"--random-source=FILE\n"
" Use FILE as a source of random data (e.g., when creating a volume) instead\n"