Add GNU/Hurd support

CMakeLists.txt

@@ -32,6 +32,8 @@ elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "SunOS")
     set(SunOS TRUE CACHE BOOL "..." FORCE)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Haiku")
     set(Haiku TRUE CACHE BOOL "..." FORCE)
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "GNU")
+    set(GNU TRUE CACHE BOOL "..." FORCE)
 elseif(NOT APPLE AND NOT WIN32)
     message(FATAL_ERROR "Unsupported platform: ${CMAKE_SYSTEM_NAME}")
 endif()
@@ -56,30 +58,30 @@ include(CheckIncludeFile)
 
 include(CMakeDependentOption)
 
-cmake_dependent_option(ENABLE_VULKAN "Enable vulkan" ON "LINUX OR APPLE OR FreeBSD OR OpenBSD OR NetBSD OR WIN32 OR ANDROID OR SunOS OR Haiku" OFF)
-cmake_dependent_option(ENABLE_WAYLAND "Enable wayland-client" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD" OFF)
-cmake_dependent_option(ENABLE_XCB_RANDR "Enable xcb-randr" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_XRANDR "Enable xrandr" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_DRM "Enable libdrm" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_DRM_AMDGPU "Enable libdrm_amdgpu" ON "LINUX OR FreeBSD" OFF)
-cmake_dependent_option(ENABLE_GIO "Enable gio-2.0" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_DCONF "Enable dconf" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_DBUS "Enable dbus-1" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR Haiku" OFF)
-cmake_dependent_option(ENABLE_XFCONF "Enable libxfconf-0" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_SQLITE3 "Enable sqlite3" ON "LINUX OR FreeBSD OR APPLE OR OpenBSD OR NetBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_RPM "Enable rpm" ON "LINUX" OFF)
-cmake_dependent_option(ENABLE_IMAGEMAGICK7 "Enable imagemagick 7" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR APPLE OR WIN32 OR SunOS OR Haiku" OFF)
-cmake_dependent_option(ENABLE_IMAGEMAGICK6 "Enable imagemagick 6" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR APPLE OR SunOS" OFF)
+cmake_dependent_option(ENABLE_VULKAN "Enable vulkan" ON "LINUX OR APPLE OR FreeBSD OR OpenBSD OR NetBSD OR WIN32 OR ANDROID OR SunOS OR Haiku OR GNU" OFF)
+cmake_dependent_option(ENABLE_WAYLAND "Enable wayland-client" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR GNU" OFF)
+cmake_dependent_option(ENABLE_XCB_RANDR "Enable xcb-randr" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_XRANDR "Enable xrandr" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_DRM "Enable libdrm" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_DRM_AMDGPU "Enable libdrm_amdgpu" ON "LINUX OR FreeBSD OR GNU" OFF)
+cmake_dependent_option(ENABLE_GIO "Enable gio-2.0" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_DCONF "Enable dconf" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_DBUS "Enable dbus-1" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR Haiku OR GNU" OFF)
+cmake_dependent_option(ENABLE_XFCONF "Enable libxfconf-0" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_SQLITE3 "Enable sqlite3" ON "LINUX OR FreeBSD OR APPLE OR OpenBSD OR NetBSD OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_RPM "Enable rpm" ON "LINUX OR GNU" OFF)
+cmake_dependent_option(ENABLE_IMAGEMAGICK7 "Enable imagemagick 7" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR APPLE OR WIN32 OR SunOS OR Haiku OR GNU" OFF)
+cmake_dependent_option(ENABLE_IMAGEMAGICK6 "Enable imagemagick 6" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR APPLE OR SunOS OR GNU" OFF)
 cmake_dependent_option(ENABLE_CHAFA "Enable chafa" ON "ENABLE_IMAGEMAGICK6 OR ENABLE_IMAGEMAGICK7" OFF)
 cmake_dependent_option(ENABLE_ZLIB "Enable zlib" ON "ENABLE_IMAGEMAGICK6 OR ENABLE_IMAGEMAGICK7" OFF)
-cmake_dependent_option(ENABLE_EGL "Enable egl" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR ANDROID OR WIN32 OR SunOS OR Haiku" OFF)
-cmake_dependent_option(ENABLE_GLX "Enable glx" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR ANDROID OR SunOS" OFF)
-cmake_dependent_option(ENABLE_OPENCL "Enable opencl" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR WIN32 OR ANDROID OR SunOS OR Haiku" OFF)
+cmake_dependent_option(ENABLE_EGL "Enable egl" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR ANDROID OR WIN32 OR SunOS OR Haiku OR GNU" OFF)
+cmake_dependent_option(ENABLE_GLX "Enable glx" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR ANDROID OR SunOS OR GNU" OFF)
+cmake_dependent_option(ENABLE_OPENCL "Enable opencl" ON "LINUX OR FreeBSD OR OpenBSD OR NetBSD OR WIN32 OR ANDROID OR SunOS OR Haiku OR GNU" OFF)
 cmake_dependent_option(ENABLE_FREETYPE "Enable freetype" ON "ANDROID" OFF)
-cmake_dependent_option(ENABLE_PULSE "Enable pulse" ON "LINUX" OFF)
+cmake_dependent_option(ENABLE_PULSE "Enable pulse" ON "LINUX OR GNU" OFF)
 cmake_dependent_option(ENABLE_DDCUTIL "Enable ddcutil" ON "LINUX" OFF)
 cmake_dependent_option(ENABLE_DIRECTX_HEADERS "Enable DirectX headers for WSL" ON "LINUX" OFF)
-cmake_dependent_option(ENABLE_ELF "Enable libelf" ON "LINUX OR ANDROID OR DragonFly OR Haiku" OFF)
+cmake_dependent_option(ENABLE_ELF "Enable libelf" ON "LINUX OR ANDROID OR DragonFly OR Haiku OR GNU" OFF)
 cmake_dependent_option(ENABLE_THREADS "Enable multithreading" ON "Threads_FOUND" OFF)
 cmake_dependent_option(ENABLE_LIBZFS "Enable libzfs" ON "LINUX OR FreeBSD OR SunOS" OFF)
 cmake_dependent_option(ENABLE_PCIACCESS "Enable libpciaccess" ON "NetBSD OR OpenBSD" OFF)
@@ -1192,6 +1194,84 @@ elseif(Haiku)
         src/util/binary_linux.c
         src/util/haiku/version.cpp
     )
+elseif(GNU)
+    list(APPEND LIBFASTFETCH_SRC
+        src/common/dbus.c
+        src/common/io/io_unix.c
+        src/common/netif/netif_gnu.c
+        src/common/networking/networking_linux.c
+        src/common/processing_linux.c
+        src/detection/battery/battery_nosupport.c
+        src/detection/bios/bios_nosupport.c
+        src/detection/board/board_nosupport.c
+        src/detection/bootmgr/bootmgr_nosupport.c
+        src/detection/brightness/brightness_nosupport.c
+        src/detection/btrfs/btrfs_nosupport.c
+        src/detection/chassis/chassis_nosupport.c
+        src/detection/cpu/cpu_linux.c
+        src/detection/cpucache/cpucache_nosupport.c
+        src/detection/cpuusage/cpuusage_linux.c
+        src/detection/cursor/cursor_linux.c
+        src/detection/bluetooth/bluetooth_linux.c
+        src/detection/bluetoothradio/bluetoothradio_linux.c
+        src/detection/disk/disk_linux.c
+        src/detection/dns/dns_linux.c
+        src/detection/physicaldisk/physicaldisk_nosupport.c
+        src/detection/physicalmemory/physicalmemory_nosupport.c
+        src/detection/diskio/diskio_nosupport.c
+        src/detection/displayserver/linux/displayserver_linux.c
+        src/detection/displayserver/linux/drm.c
+        src/detection/displayserver/linux/wayland/wayland.c
+        src/detection/displayserver/linux/wayland/global-output.c
+        src/detection/displayserver/linux/wayland/zwlr-output.c
+        src/detection/displayserver/linux/wayland/wlr-output-management-unstable-v1-protocol.c
+        src/detection/displayserver/linux/wmde.c
+        src/detection/displayserver/linux/xcb.c
+        src/detection/displayserver/linux/xlib.c
+        src/detection/font/font_linux.c
+        src/detection/gpu/gpu_nosupport.c
+        src/detection/gpu/gpu_pci.c
+        src/detection/gtk_qt/gtk.c
+        src/detection/host/host_nosupport.c
+        src/detection/icons/icons_linux.c
+        src/detection/initsystem/initsystem_linux.c
+        src/detection/keyboard/keyboard_nosupport.c
+        src/detection/libc/libc_linux.c
+        src/detection/lm/lm_linux.c
+        src/detection/loadavg/loadavg_linux.c
+        src/detection/locale/locale_linux.c
+        src/detection/localip/localip_linux.c
+        src/detection/gamepad/gamepad_nosupport.c
+        src/detection/media/media_linux.c
+        src/detection/memory/memory_linux.c
+        src/detection/mouse/mouse_nosupport.c
+        src/detection/netio/netio_nosupport.c
+        src/detection/opengl/opengl_linux.c
+        src/detection/os/os_linux.c
+        src/detection/packages/packages_linux.c
+        src/detection/packages/packages_nix.c
+        src/detection/poweradapter/poweradapter_nosupport.c
+        src/detection/processes/processes_linux.c
+        src/detection/gtk_qt/qt.c
+        src/detection/sound/sound_linux.c
+        src/detection/swap/swap_linux.c
+        src/detection/terminalfont/terminalfont_linux.c
+        src/detection/terminalshell/terminalshell_linux.c
+        src/detection/terminalsize/terminalsize_linux.c
+        src/detection/theme/theme_linux.c
+        src/detection/tpm/tpm_nosupport.c
+        src/detection/uptime/uptime_linux.c
+        src/detection/users/users_linux.c
+        src/detection/wallpaper/wallpaper_linux.c
+        src/detection/wifi/wifi_nosupport.c
+        src/detection/wm/wm_linux.c
+        src/detection/de/de_linux.c
+        src/detection/wmtheme/wmtheme_linux.c
+        src/detection/camera/camera_nosupport.c
+        src/detection/zpool/zpool_nosupport.c
+        src/util/platform/FFPlatform_unix.c
+        src/util/binary_linux.c
+   )
 endif()
 
 if(ENABLE_DIRECTX_HEADERS)
@@ -1315,6 +1395,10 @@ elseif(NetBSD)
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath,/usr/X11R7/lib -Wl,-rpath,/usr/pkg/lib") # ditto
 elseif(Haiku)
     target_compile_definitions(libfastfetch PUBLIC _GNU_SOURCE)
+elseif(GNU)
+    target_compile_definitions(libfastfetch PUBLIC _GNU_SOURCE)
+    # On Hurd PATH_MAX is not defined. Set an arbitrary limit as workaround.
+    target_compile_definitions(libfastfetch PUBLIC PATH_MAX=4096)
 endif()
 
 if(FreeBSD OR OpenBSD OR NetBSD)
@@ -1639,6 +1723,10 @@ elseif(SunOS)
         PRIVATE "nvpair"
         PRIVATE "devinfo"
     )
+elseif(GNU)
+    target_link_libraries(libfastfetch
+        PRIVATE "m"
+    )
 elseif(ANDROID)
     CHECK_LIBRARY_EXISTS(-l:libandroid-wordexp.a wordexp "" HAVE_LIBANDROID_WORDEXP_STATIC)
     if(HAVE_LIBANDROID_WORDEXP_STATIC)

src/common/netif/netif_gnu.c

@@ -0,0 +1,35 @@
+#include "netif.h"
+#include "common/io/io.h"
+
+#include <net/if.h>
+#include <stdio.h>
+
+#define FF_STR_INDIR(x) #x
+#define FF_STR(x) FF_STR_INDIR(x)
+
+bool ffNetifGetDefaultRouteImplV4(FFNetifDefaultRouteResult* result)
+{
+    // Based on netif_linux.c before 5e770dc8b019702ca458cc0cad46161ebec608a4
+    FILE* FF_AUTO_CLOSE_FILE netRoute = fopen("/proc/route", "r");
+
+    if (!netRoute) return false;
+
+    // skip first line
+    FF_UNUSED(fscanf(netRoute, "%*[^\n]\n"));
+    unsigned long long destination; //, gateway, flags, refCount, use, metric, mask, mtu, ...
+    while (fscanf(netRoute, "%" FF_STR(IF_NAMESIZE) "s%llx%*[^\n]", result->ifName, &destination) == 2)
+    {
+        if (destination != 0) continue;
+        result->ifIndex = if_nametoindex(result->ifName);
+        // TODO: Get the preferred source address
+        return true;
+    }
+    result->ifName[0] = '0';
+    return false;
+}
+
+bool ffNetifGetDefaultRouteImplV6(FFNetifDefaultRouteResult* result)
+{
+    // TODO: AF_INET6
+    return false;
+}

src/common/networking/networking_linux.c

@@ -22,7 +22,7 @@ static const char* tryNonThreadingFastPath(FFNetworkingState* state)
 
         if (!state->tfo)
         {
-            #ifdef __linux__
+            #if __linux__ || __GNU__
             // Linux doesn't support sendto() on unconnected sockets
             FF_DEBUG("TCP Fast Open disabled, skipping");
             return "TCP Fast Open disabled";
@@ -34,7 +34,7 @@ static const char* tryNonThreadingFastPath(FFNetworkingState* state)
 
             #ifndef __APPLE__ // On macOS, TCP_FASTOPEN doesn't seem to be needed
             // Set TCP Fast Open
-            #ifdef __linux__
+            #if __linux__ || __GNU__
             int flag = 5; // the queue length of pending packets
             #else
             int flag = 1; // enable TCP Fast Open
@@ -50,7 +50,7 @@ static const char* tryNonThreadingFastPath(FFNetworkingState* state)
                 FF_DEBUG("Failed to set TCP_FASTOPEN option: %s", strerror(errno));
                 return "setsockopt(TCP_FASTOPEN) failed";
             } else {
-                #ifdef __linux__
+                #if __linux__ || __GNU__
                 FF_DEBUG("Successfully set TCP_FASTOPEN option, queue length: %d", flag);
                 #elif defined(__APPLE__)
                 FF_DEBUG("Successfully set TCP_FASTOPEN_FORCE_ENABLE option");

src/common/processing_linux.c

@@ -234,7 +234,7 @@ void ffProcessGetInfoLinux(pid_t pid, FFstrbuf* processName, FFstrbuf* exe, cons
     assert(processName->length > 0);
     ffStrbufClear(exe);
 
-    #ifdef __linux__
+    #if defined(__linux__) || defined(__GNU__)
 
     char filePath[64];
     snprintf(filePath, sizeof(filePath), "/proc/%d/cmdline", (int)pid);
@@ -436,7 +436,7 @@ const char* ffProcessGetBasicInfoLinux(pid_t pid, FFstrbuf* name, pid_t* ppid, i
     if (pid <= 0)
         return "Invalid pid";
 
-    #ifdef __linux__
+    #if defined(__linux__) || defined(__GNU__)
 
     char procFilePath[64];
     if (ppid)
@@ -465,11 +465,30 @@ const char* ffProcessGetBasicInfoLinux(pid_t pid, FFstrbuf* name, pid_t* ppid, i
     }
     else
     {
+        #ifndef __GNU__
         snprintf(procFilePath, sizeof(procFilePath), "/proc/%d/comm", (int)pid);
         ssize_t nRead = ffReadFileBuffer(procFilePath, name);
         if(nRead <= 0)
             return "ffReadFileBuffer(/proc/pid/comm, name) failed";
         ffStrbufTrimRightSpace(name);
+        #else
+        // No /proc/1/comm on Hurd so read /proc/1/stat again
+        snprintf(procFilePath, sizeof(procFilePath), "/proc/%d/stat", (int)pid);
+        char buf[PROC_FILE_BUFFSIZ];
+        ssize_t nRead = ffReadFileData(procFilePath, sizeof(buf) - 1, buf);
+        if(nRead <= 8)
+            return "ffReadFileData(/proc/pid/stat, PROC_FILE_BUFFSIZ-1, buf) failed";
+        buf[nRead] = '\0';
+
+        const char* start = memchr(buf, '(', (size_t) nRead);
+        if (!start)
+            return "memchr(stat, '(') failed";
+        start++;
+        const char* end = memchr(start, ')', (size_t) nRead - (size_t) (start - buf));
+        if (!end)
+            return "memchr(stat, ')') failed";
+        ffStrbufSetNS(name, (uint32_t) (end - start), start);
+        #endif
     }
 
     #elif defined(__APPLE__)

src/detection/cpuusage/cpuusage.c

@@ -54,6 +54,7 @@ const char* ffGetCpuUsageResult(FFCPUUsageOptions* options, FFlist* result)
                 ffTimeSleep(options->waitTime);
                 goto retry;
             }
+            return "CPU time did not increase. Try increasing wait time.";
         }
     }
 

src/detection/displayserver/linux/wayland/wayland.c

@@ -26,9 +26,9 @@
 
 static bool waylandDetectWM(int fd, FFDisplayServerResult* result)
 {
-#if __linux__ || (__FreeBSD__ && !__DragonFly__)
+#if __linux__ || __GNU__ || (__FreeBSD__ && !__DragonFly__)
 
-#if __linux
+#if __linux__ || __GNU__
     struct ucred ucred = {};
     socklen_t len = sizeof(ucred);
     if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &len) == -1 || ucred.pid <= 0)

src/detection/displayserver/linux/wmde.c

@@ -351,7 +351,7 @@ static const char* getFromProcesses(FFDisplayServerResult* result)
                 break;
         }
     }
-#elif __linux__
+#elif __linux__ || __GNU__
     FF_AUTO_CLOSE_DIR DIR* procdir = opendir("/proc");
     if(procdir == NULL)
         return "opendir(\"/proc\") failed";

src/detection/initsystem/initsystem_linux.c

@@ -48,7 +48,7 @@ const char* ffDetectInitSystem(FFInitSystemResult* result)
 
     if (instance.config.general.detectVersion)
     {
-        #if __linux__ && !__ANDROID__
+        #if (defined(__linux__) && !defined(__ANDROID__)) || defined(__GNU__)
         if (ffStrbufEqualS(&result->name, "systemd"))
         {
             ffBinaryExtractStrings(result->exe.chars, extractSystemdVersion, &result->version, (uint32_t) strlen("systemd 0.0 running in x"));
@@ -84,6 +84,20 @@ const char* ffDetectInitSystem(FFInitSystemResult* result)
                 ffStrbufSubstrAfterLastC(&result->version, ' ');
             }
         }
+        else if (ffStrbufEqualS(&result->name, "guile"))
+        {
+            // TODO: guile is actually shepherd
+            if (ffProcessAppendStdOut(&result->version, (char* const[]) {
+                ffStrbufEndsWithS(&result->exe, "/guile") ? result->exe.chars : "guile",
+                "--version",
+                NULL,
+            }) == NULL && result->version.length)
+            {
+                // guile (GNU Guile) 3.0.9
+                ffStrbufSubstrBeforeFirstC(&result->version, '\n');
+                ffStrbufSubstrAfterLastC(&result->version, ' ');
+            }
+        }
         #elif __APPLE__
         if (ffStrbufEqualS(&result->name, "launchd"))
         {

src/detection/loadavg/loadavg_linux.c

@@ -19,13 +19,14 @@ const char* ffDetectLoadavg(double result[3])
     }
 
     #endif
-
+    #ifndef __GNU__
     // getloadavg requires higher ANDROID_API version
     struct sysinfo si;
     if (sysinfo(&si) < 0)
         return "sysinfo() failed";
 
     for (int i = 0; i < 3; i++)
         result[i] = (double) si.loads[i] / (1 << SI_LOAD_SHIFT);
+    #endif
     return NULL;
 }