Use rb_io_descriptor() API to fix deprecated message

.github/workflows/linux.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '2.5', '2.6' , '2.7', '3.0' ]
+        ruby: [ '2.5', '2.6' , '2.7', '3.0', '3.1', '3.2', '3.3', '3.4' ]
         os:
           - ubuntu-latest
     name: Ruby ${{ matrix.ruby }} unit testing on ${{ matrix.os }}
@@ -25,6 +25,5 @@ jobs:
       env:
         CI: true
       run: |
-        gem install bundler rake
         bundle install --jobs 4 --retry 3
         bundle exec rake

.github/workflows/yum.yml

@@ -9,16 +9,16 @@ jobs:
       fail-fast: false
       matrix:
         label:
-          - CentOS 7 x86_64
-          - CentOS 8 x86_64
+          - RockyLinux 8 x86_64
+          - AlmaLinux 9 x86_64
           - Fedora 33 x86_64
           - AmazonLinux 2 x86_64
         include:
-          - label: CentOS 7 x86_64
-            test-docker-image: centos:7
+          - label: RockyLinux 8 x86_64
+            test-docker-image: rockylinux:8
             test-script: ci/yum-test.sh
-          - label: CentOS 8 x86_64
-            test-docker-image: centos:8
+          - label: AlmaLinux 9 x86_64
+            test-docker-image: almalinux:9
             test-script: ci/yum-test.sh
           - label: Fedora 33 x86_64
             test-docker-image: fedora:33
@@ -36,4 +36,4 @@ jobs:
           --tty \
           --volume ${PWD}:/capng \
           ${{ matrix.test-docker-image }} \
-          /capng/${{ matrix.test-script }}
+          /capng/${{ matrix.test-script }}

Rakefile

@@ -12,9 +12,7 @@ end
 
 require "rake/extensiontask"
 
-spec = eval File.read("capng_c.gemspec")
-
-Rake::ExtensionTask.new("capng", spec) do |ext|
+Rake::ExtensionTask.new("capng") do |ext|
   ext.lib_dir = "lib/capng"
 end
 

ci/apt-test.sh

@@ -7,9 +7,9 @@ export DEBIAN_FRONTEND=noninteractive
 apt update
 apt install -V -y lsb-release
 
-apt install -V -y ruby-dev git build-essential pkg-config
+apt install -V -y ruby-dev git build-essential pkg-config libyaml-dev
 apt install -V -y libcap-ng-dev
 cd /capng && \
-    gem install bundler --no-document && \
+    gem install bundler -v 2.3.27 --no-document && \
     bundle install && \
     bundle exec rake

ci/yum-test.sh

@@ -34,6 +34,12 @@ case ${distribution} in
         ;;
     esac
     ;;
+  rocky)
+    DNF="dnf --enablerepo=powertools"
+    ;;
+  almalinux)
+    DNF="dnf --enablerepo=crb"
+    ;;
 esac
 
 ${DNF} groupinstall -y "Development Tools"
@@ -53,12 +59,13 @@ else
            rubygems \
            rpm-build
 fi
+${DNF} install -y libyaml-devel
 ${DNF} install -y libcap-ng-devel
 
 if [ $USE_SCL -eq 1 ]; then
     # For unbound variable error
     export MANPATH=
     cd /capng && source /opt/rh/rh-ruby26/enable && gem install bundler --no-document && bundle install && bundle exec rake
 else
-    cd /capng && gem install bundler --no-document && bundle install && bundle exec rake
+    cd /capng && gem install bundler -v 2.3.27 --no-document && bundle install && bundle exec rake
 fi

ext/capng/capng.c

@@ -67,6 +67,19 @@ rb_capng_alloc(VALUE klass)
   return obj;
 }
 
+static int
+capng_get_file_descriptor(VALUE rb_file)
+{
+#ifdef HAVE_RB_IO_DESCRIPTOR
+  return rb_io_descriptor(rb_file);
+#else
+  rb_io_t* fptr = NULL;
+
+  fptr = RFILE(rb_file)->fptr;
+  return fptr->fd;
+#endif
+}
+
 /*
  * Initalize CapNG class.
  *
@@ -500,15 +513,13 @@ static VALUE
 rb_capng_get_caps_file(VALUE self, VALUE rb_file)
 {
   int result = 0, fd = 0;
-  rb_io_t* fptr = NULL;
 
   Check_Type(rb_file, T_FILE);
 
   if (NIL_P(rb_file)) {
     return Qfalse;
   }
-  fptr = RFILE(rb_file)->fptr;
-  fd = fptr->fd;
+  fd = capng_get_file_descriptor(rb_file);
   result = capng_get_caps_fd(fd);
 
   if (result == 0)
@@ -529,16 +540,14 @@ static VALUE
 rb_capng_apply_caps_file(VALUE self, VALUE rb_file)
 {
   int result = 0, fd = 0;
-  rb_io_t* fptr = NULL;
 
   Check_Type(rb_file, T_FILE);
 
   if (NIL_P(rb_file)) {
     return Qfalse;
   }
 
-  fptr = RFILE(rb_file)->fptr;
-  fd = fptr->fd;
+  fd = capng_get_file_descriptor(rb_file);
   result = capng_apply_caps_fd(fd);
 
   if (result == 0)

ext/capng/extconf.rb

@@ -29,5 +29,6 @@
 have_const("CAPNG_AMBIENT", "cap-ng.h")
 have_const("CAPNG_INIT_SUPP_GRP", "cap-ng.h")
 have_func("rb_sym2str", "ruby.h")
+have_func("rb_io_descriptor", "ruby.h")
 have_func("capng_get_caps_fd", "cap-ng.h")
 create_makefile("capng/capng")