Add setting argv0 for interpreter

Add the ability to use .preload file
VHSgunzo · Jan 26, 2025 · 62a62d2 · 62a62d2
1 parent 2a23962
commit 62a62d2
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diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sharun"
-version = "0.2.6"
+version = "0.2.7"
 readme = "README.md"
 license = "MIT"
 repository = "https://github.com/VHSgunzo/sharun"

diff --git a/README.md b/README.md
@@ -91,42 +91,49 @@ cp ./target/$(uname -m)-unknown-linux-musl/release/sharun .
 
 * Additional env var can be specified in the `.env` file (see [dotenv](https://crates.io/crates/dotenv)). Env var can also be deleted using `unset ENV_VAR` in the end of the `.env` file.
 
+* You can preload libraries using `.preload` file. Specify the necessary libraries in it from a new line. You can use the full paths to libraries or only their names if they are located in `shared/{lib,lib32}/`
+This can be useful, for example, to use [ld-preload-open](https://github.com/fritzw/ld-preload-open) library to reassign paths.
+
 * Also you can package the `sharun directory` with your applications into a single executable file using [wrappe](https://github.com/Systemcluster/wrappe)
 
 ## Screenshots:
 ![tree](img/tree.png)
 
 ## Environment variables that are set if sharun finds a directory or file:
-* `PATH` -- `${SHARUN_DIR}/bin`
-* `PYTHONHOME` and `PYTHONDONTWRITEBYTECODE` -- `${SHARUN_DIR}/shared/$LIB/python*`
-* `PERLLIB` -- `${SHARUN_DIR}/shared/$LIB/perl*`
-* `GCONV_PATH` -- `${SHARUN_DIR}/shared/$LIB/gconv`
-* `GIO_MODULE_DIR` -- `${SHARUN_DIR}/shared/$LIB/gio/modules`
-* `GTK_PATH`, `GTK_EXE_PREFIX` and `GTK_DATA_PREFIX` -- `${SHARUN_DIR}/shared/$LIB/gtk-*`
-* `QT_PLUGIN_PATH` -- `${SHARUN_DIR}/shared/$LIB/qt*/plugins`
-* `BABL_PATH` -- `${SHARUN_DIR}/shared/$LIB/babl-*`
-* `GEGL_PATH` -- `${SHARUN_DIR}/shared/$LIB/gegl-*`
-* `GIMP2_PLUGINDIR` -- `${SHARUN_DIR}/shared/$LIB/gimp/2.0`
-* `TCL_LIBRARY` -- `${SHARUN_DIR}/shared/$LIB/tcl*`
-* `TK_LIBRARY` -- `${SHARUN_DIR}/shared/$LIB/tk*`
-* `GST_PLUGIN_PATH`, `GST_PLUGIN_SYSTEM_PATH`, `GST_PLUGIN_SYSTEM_PATH_1_0`, and `GST_PLUGIN_SCANNER` -- `${SHARUN_DIR}/shared/$LIB/gstreamer-*`
-* `GDK_PIXBUF_MODULEDIR` and `GDK_PIXBUF_MODULE_FILE` -- `${SHARUN_DIR}/shared/$LIB/gdk-pixbuf-*`
-* `LIBDECOR_PLUGIN_DIR` -- `${SHARUN_DIR}/shared/$LIB/libdecor/plugins-1`
-* `GTK_IM_MODULE_FILE` -- `${SHARUN_DIR}/shared/$LIB/gtk-*/*/immodules.cache`
-* `LIBGL_DRIVERS_PATH` -- `${SHARUN_DIR}/shared/$LIB/dri`
-* `SPA_PLUGIN_DIR` -- `${SHARUN_DIR}/shared/$LIB/spa-*`
-* `PIPEWIRE_MODULE_DIR` -- `${SHARUN_DIR}/shared/$LIB/pipewire-*`
-
-* `XDG_DATA_DIRS` -- `${SHARUN_DIR}/share`
-* `VK_DRIVER_FILES` -- `${SHARUN_DIR}/share/vulkan/icd.d`
-* `__EGL_VENDOR_LIBRARY_DIRS` -- `${SHARUN_DIR}/share/glvnd/egl_vendor.d`
-* `XKB_CONFIG_ROOT` -- `${SHARUN_DIR}/share/X11/xkb`
-* `GSETTINGS_SCHEMA_DIR` -- `${SHARUN_DIR}/share/glib-2.0/schemas`
-* `GIMP2_DATADIR` -- `${SHARUN_DIR}/share/gimp/2.0`
-* `TERMINFO` -- `${SHARUN_DIR}/share/terminfo`
-
-* `FONTCONFIG_FILE` -- `${SHARUN_DIR}/etc/fonts/fonts.conf`
-* `GIMP2_SYSCONFDIR` -- `${SHARUN_DIR}/etc/gimp/2.0`
+|||
+|---|---|
+|`PATH` | `${SHARUN_DIR}/bin` |
+|`PYTHONHOME` and `PYTHONDONTWRITEBYTECODE` | `${SHARUN_DIR}/shared/$LIB/python*` |
+|`PERLLIB` | `${SHARUN_DIR}/shared/$LIB/perl*` |
+|`GCONV_PATH` | `${SHARUN_DIR}/shared/$LIB/gconv` |
+|`GIO_MODULE_DIR` | `${SHARUN_DIR}/shared/$LIB/gio/modules`|
+|`GTK_PATH`, `GTK_EXE_PREFIX` and `GTK_DATA_PREFIX` | `${SHARUN_DIR}/shared/$LIB/gtk-*`|
+|`QT_PLUGIN_PATH` | `${SHARUN_DIR}/shared/$LIB/qt*/plugins`|
+|`BABL_PATH` | `${SHARUN_DIR}/shared/$LIB/babl-*`|
+|`GEGL_PATH` | `${SHARUN_DIR}/shared/$LIB/gegl-*`|
+|`GIMP2_PLUGINDIR` | `${SHARUN_DIR}/shared/$LIB/gimp/2.0`|
+|`TCL_LIBRARY` | `${SHARUN_DIR}/shared/$LIB/tcl*`|
+|`TK_LIBRARY` | `${SHARUN_DIR}/shared/$LIB/tk*`|
+|`GST_PLUGIN_PATH`, `GST_PLUGIN_SYSTEM_PATH`, `GST_PLUGIN_SYSTEM_PATH_1_0`, and `GST_PLUGIN_SCANNER` | `${SHARUN_DIR}/shared/$LIB/gstreamer-*`|
+|`GDK_PIXBUF_MODULEDIR` and `GDK_PIXBUF_MODULE_FILE` | `${SHARUN_DIR}/shared/$LIB/gdk-pixbuf-*`|
+|`LIBDECOR_PLUGIN_DIR` | `${SHARUN_DIR}/shared/$LIB/libdecor/plugins-1`|
+|`GTK_IM_MODULE_FILE` | `${SHARUN_DIR}/shared/$LIB/gtk-*/*/immodules.cache`|
+|`LIBGL_DRIVERS_PATH` | `${SHARUN_DIR}/shared/$LIB/dri`|
+|`SPA_PLUGIN_DIR` | `${SHARUN_DIR}/shared/$LIB/spa-*`|
+|`PIPEWIRE_MODULE_DIR` | `${SHARUN_DIR}/shared/$LIB/pipewire-*`|
+|||
+|---|---|
+|`XDG_DATA_DIRS` | `${SHARUN_DIR}/share`|
+|`VK_DRIVER_FILES` | `${SHARUN_DIR}/share/vulkan/icd.d`|
+|`__EGL_VENDOR_LIBRARY_DIRS` | `${SHARUN_DIR}/share/glvnd/egl_vendor.d`|
+|`XKB_CONFIG_ROOT` | `${SHARUN_DIR}/share/X11/xkb`|
+|`GSETTINGS_SCHEMA_DIR` | `${SHARUN_DIR}/share/glib-2.0/schemas`|
+|`GIMP2_DATADIR` | `${SHARUN_DIR}/share/gimp/2.0`|
+|`TERMINFO` | `${SHARUN_DIR}/share/terminfo`|
+|||
+|---|---|
+|`FONTCONFIG_FILE` | `${SHARUN_DIR}/etc/fonts/fonts.conf`|
+|`GIMP2_SYSCONFDIR` | `${SHARUN_DIR}/etc/gimp/2.0`|
 
 ## Projects that use sharun:
 * [pelfCreator](https://github.com/xplshn/pelf/blob/pelf-ng/pelfCreator)
@@ -137,6 +144,8 @@ cp ./target/$(uname -m)-unknown-linux-musl/release/sharun .
 * [mpv-AppImage](https://github.com/Samueru-sama/mpv-AppImage)
 * [OBS-Studio-AppImage](https://github.com/Samueru-sama/OBS-Studio-AppImage)
 * [GIMP-AppImage](https://github.com/Samueru-sama/GIMP-AppImage)
+* [RMG](https://github.com/Rosalie241/RMG)
+* [PrusaSlicer](https://github.com/probonopd/PrusaSlicer)
 
 ## References
 * [userland-execve](https://crates.io/crates/userland-execve)

diff --git a/src/main.rs b/src/main.rs
@@ -595,8 +595,29 @@ fn main() {
         CString::from_str(&interpreter.to_string_lossy()).unwrap(),
         CString::new("--library-path").unwrap(),
         CString::new(library_path).unwrap(),
-        CString::new(bin).unwrap()
+        CString::new("--argv0").unwrap(),
+        CString::new(arg0_path.to_str().unwrap()).unwrap()
     ];
+
+    let preload_path = PathBuf::from(format!("{sharun_dir}/.preload"));
+    if preload_path.exists() {
+        let data = read_to_string(&preload_path).unwrap_or_else(|err|{
+            eprintln!("Failed to read .preload file: {}: {err}", preload_path.display());
+            exit(1)
+        });
+        let mut preload: Vec<String> = vec![];
+        for string in data.trim().split("\n") {
+            preload.push(string.trim().into());            
+        }
+        if !preload.is_empty() {
+            interpreter_args.append(&mut vec![
+                CString::new("--preload").unwrap(),
+                CString::new(preload.join(" ")).unwrap()
+            ])
+        }
+    }
+
+    interpreter_args.push(CString::new(bin).unwrap());
     for arg in exec_args {
         interpreter_args.push(CString::from_str(&arg).unwrap())
     }