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authorLibravatar tobi <31960611+tsmethurst@users.noreply.github.com>2022-04-24 12:26:22 +0200
committerLibravatar GitHub <noreply@github.com>2022-04-24 12:26:22 +0200
commit88979b35d462516e1765524d70a41c0d26eec911 (patch)
treefd37cb19317217e226ee7717824f24031f53b031 /vendor/modernc.org/memory/mmap_linux_32.go
parentRevert "[chore] Tidy up federating db locks a tiny bit (#472)" (#479) (diff)
downloadgotosocial-88979b35d462516e1765524d70a41c0d26eec911.tar.xz
[chore] Update bun and sqlite dependencies (#478)
* update bun + sqlite versions * step bun to v1.1.3
Diffstat (limited to 'vendor/modernc.org/memory/mmap_linux_32.go')
-rw-r--r--vendor/modernc.org/memory/mmap_linux_32.go35
1 files changed, 35 insertions, 0 deletions
diff --git a/vendor/modernc.org/memory/mmap_linux_32.go b/vendor/modernc.org/memory/mmap_linux_32.go
new file mode 100644
index 000000000..207ad417d
--- /dev/null
+++ b/vendor/modernc.org/memory/mmap_linux_32.go
@@ -0,0 +1,35 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE-GO file.
+
+//go:build linux && (386 || arm || mips || mipsle)
+// +build linux
+// +build 386 arm mips mipsle
+
+package memory
+
+import (
+ "syscall"
+)
+
+// Function syscall.mmap and syscall.mmap2 are same for linux/386, linux/arm,
+// linux/mips and linux/mipsle
+
+// https://cs.opensource.google/go/go/+/refs/tags/go1.17.8:src/syscall/syscall_linux_386.go;l=99-105
+func mmapSyscall(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
+ page := uintptr(offset / 4096)
+ if offset != int64(page)*4096 {
+ return 0, syscall.EINVAL
+ }
+ return mmap2Syscall(addr, length, prot, flags, fd, page)
+}
+
+// https://cs.opensource.google/go/go/+/refs/tags/go1.17.8:src/syscall/zsyscall_linux_386.go;l=1361-1370
+func mmap2Syscall(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) {
+ r0, _, e1 := syscall.Syscall6(syscall.SYS_MMAP2, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(pageOffset))
+ xaddr = uintptr(r0)
+ if e1 != 0 {
+ err = e1
+ }
+ return
+}