syscall: use 32 bits structure for Getrlimit/Setrlimit on 386/ARM.
Fixes #2492
R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/6295073
diff --git a/src/pkg/syscall/syscall_linux_arm.go b/src/pkg/syscall/syscall_linux_arm.go
index 2f29079..cd96620 100644
--- a/src/pkg/syscall/syscall_linux_arm.go
+++ b/src/pkg/syscall/syscall_linux_arm.go
@@ -87,6 +87,69 @@
return mmap2(addr, length, prot, flags, fd, page)
}
+type rlimit32 struct {
+ Cur uint32
+ Max uint32
+}
+
+//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT
+
+const rlimInf32 = ^uint32(0)
+const rlimInf64 = ^uint64(0)
+
+func Getrlimit(resource int, rlim *Rlimit) (err error) {
+ err = Prlimit(0, resource, rlim, nil)
+ if err != ENOSYS {
+ return err
+ }
+
+ rl := rlimit32{}
+ err = getrlimit(resource, &rl)
+ if err != nil {
+ return
+ }
+
+ if rl.Cur == rlimInf32 {
+ rlim.Cur = rlimInf64
+ } else {
+ rlim.Cur = uint64(rl.Cur)
+ }
+
+ if rl.Max == rlimInf32 {
+ rlim.Max = rlimInf64
+ } else {
+ rlim.Max = uint64(rl.Max)
+ }
+ return
+}
+
+//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
+
+func Setrlimit(resource int, rlim *Rlimit) (err error) {
+ err = Prlimit(0, resource, nil, rlim)
+ if err != ENOSYS {
+ return err
+ }
+
+ rl := rlimit32{}
+ if rlim.Cur == rlimInf64 {
+ rl.Cur = rlimInf32
+ } else if rlim.Cur < uint64(rlimInf32) {
+ rl.Cur = uint32(rlim.Cur)
+ } else {
+ return EINVAL
+ }
+ if rlim.Max == rlimInf64 {
+ rl.Max = rlimInf32
+ } else if rlim.Max < uint64(rlimInf32) {
+ rl.Max = uint32(rlim.Max)
+ } else {
+ return EINVAL
+ }
+
+ return setrlimit(resource, &rl)
+}
+
// TODO(kaib): add support for tracing
func (r *PtraceRegs) PC() uint64 { return 0 }
