From 90840f78dc17292d4b338ed349e6573ad5d641ad Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Tue, 11 Jul 2023 14:30:52 -0400
Subject: [PATCH] build: Add liburing on Linux

---
 .github/workflows/ci.yml      | 5 +++--
 .github/workflows/codecov.yml | 3 ++-
 .github/workflows/codeql.yml  | 3 ++-
 GNUmakefile                   | 8 +++++++-
 docs/BUILDING.md              | 2 ++
 5 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca1737cf..971a4df6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,9 +28,10 @@ jobs:
               libcap-dev \
               libcap2:i386 \
               libonig-dev \
-              libonig5:i386
+              libonig5:i386 \
+              liburing-dev
           # Ubuntu doesn't let you install the -dev packages for both amd64 and
-          # i386 at once, so we make our own symlinks to fix -m32 -lacl -lattr -lcap
+          # i386 at once, so we make our own symlinks to fix -m32 -lacl -l...
           sudo ln -s libacl.so.1 /lib/i386-linux-gnu/libacl.so
           sudo ln -s libattr.so.1 /lib/i386-linux-gnu/libattr.so
           sudo ln -s libcap.so.2 /lib/i386-linux-gnu/libcap.so
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 783cc431..b06ea626 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -20,7 +20,8 @@ jobs:
               libattr1-dev \
               libcap2-bin \
               libcap-dev \
-              libonig-dev
+              libonig-dev \
+              liburing-dev
 
       - name: Generate coverage
         run: |
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 88e9f3f4..3a2f81f7 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -37,7 +37,8 @@ jobs:
               libattr1-dev \
               libcap2-bin \
               libcap-dev \
-              libonig-dev
+              libonig-dev \
+              liburing-dev
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2
diff --git a/GNUmakefile b/GNUmakefile
index 69029792..81542405 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -126,6 +126,7 @@ ifndef NOLIBS
 USE_ACL := y
 USE_ATTR := y
 USE_LIBCAP := y
+USE_LIBURING := y
 endif
 
 ifdef USE_ACL
@@ -146,6 +147,11 @@ else
 LOCAL_CPPFLAGS += -DBFS_USE_SYS_CAPABILITY_H=0
 endif
 
+ifdef USE_LIBURING
+LOCAL_CPPFLAGS += -DBFS_USE_LIBURING=1
+LOCAL_LDLIBS += -luring
+endif
+
 LOCAL_LDFLAGS += -Wl,--as-needed
 LOCAL_LDLIBS += -lrt
 endif # Linux
@@ -287,7 +293,7 @@ ifneq ($(OS),Darwin)
 endif
 	+$(MAKE) -B tsan ubsan check CC=clang $(DISTCHECK_FLAGS)
 ifeq ($(OS) $(ARCH),Linux x86_64)
-	+$(MAKE) -B check EXTRA_CFLAGS="-m32" ONIG_CONFIG= $(DISTCHECK_FLAGS)
+	+$(MAKE) -B check EXTRA_CFLAGS="-m32" ONIG_CONFIG= USE_LIBURING= $(DISTCHECK_FLAGS)
 endif
 	+$(MAKE) -B release check $(DISTCHECK_FLAGS)
 	+$(MAKE) -B check $(DISTCHECK_FLAGS)
diff --git a/docs/BUILDING.md b/docs/BUILDING.md
index b19ef00b..02f97565 100644
--- a/docs/BUILDING.md
+++ b/docs/BUILDING.md
@@ -75,11 +75,13 @@ These dependencies are optional, and can be turned off at build time if necessar
 | [acl]       | Linux only | `USE_ACL`       |
 | [attr]      | Linux only | `USE_ATTR`      |
 | [libcap]    | Linux only | `USE_LIBCAP`    |
+| [liburing]  | Linux only | `USE_LIBURING`  |
 | [Oniguruma] | All        | `USE_ONIGURUMA` |
 
 [acl]: https://savannah.nongnu.org/projects/acl
 [attr]: https://savannah.nongnu.org/projects/attr
 [libcap]: https://sites.google.com/site/fullycapable/
+[liburing]: https://github.com/axboe/liburing
 [Oniguruma]: https://github.com/kkos/oniguruma
 
 ### Dependency tracking