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syscall: use 32 bits structure for Getrlimit/Setrlimit on 386/ARM.

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Fixes #2492

R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/6295073
This commit is contained in:
Han-Wen Nienhuys 2012-07-02 22:57:32 -07:00 committed by Brad Fitzpatrick
parent 18e86644a3
commit 8b7d39e7b6
7 changed files with 219 additions and 62 deletions
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3
src/pkg/syscall/syscall_linux.go
View File

@ -823,7 +823,6 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
//sysnb Getpgrp() (pid int)
//sysnb Getpid() (pid int)
//sysnb Getppid() (ppid int)
//sysnb Getrlimit(resource int, rlim *Rlimit) (err error)
//sysnb Getrusage(who int, rusage *Rusage) (err error)
//sysnb Gettid() (tid int)
//sys InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error)
@ -840,6 +839,7 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys Pause() (err error)
//sys PivotRoot(newroot string, putold string) (err error) = SYS_PIVOT_ROOT
//sysnb Prlimit(pid int, resource int, old *Rlimit, newlimit *Rlimit) (err error) = SYS_PRLIMIT64
//sys Read(fd int, p []byte) (n int, err error)
//sys Readlink(path string, buf []byte) (n int, err error)
//sys Rename(oldpath string, newpath string) (err error)
@ -848,7 +848,6 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
//sys Setdomainname(p []byte) (err error)
//sys Sethostname(p []byte) (err error)
//sysnb Setpgid(pid int, pgid int) (err error)
//sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
//sysnb Setsid() (pid int, err error)
//sysnb Settimeofday(tv *Timeval) (err error)
//sysnb Setuid(uid int) (err error)

63
src/pkg/syscall/syscall_linux_386.go
View File

@ -67,6 +67,69 @@ func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int6
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)
}
// Underlying system call writes to newoffset via pointer.
// Implemented in assembly to avoid allocation.
func Seek(fd int, offset int64, whence int) (newoffset int64, err error)

2
src/pkg/syscall/syscall_linux_amd64.go
View File

@ -12,6 +12,7 @@ package syscall
//sysnb Getegid() (egid int)
//sysnb Geteuid() (euid int)
//sysnb Getgid() (gid int)
//sysnb Getrlimit(resource int, rlim *Rlimit) (err error)
//sysnb Getuid() (uid int)
//sys Ioperm(from int, num int, on int) (err error)
//sys Iopl(level int) (err error)
@ -29,6 +30,7 @@ package syscall
//sysnb Setregid(rgid int, egid int) (err error)
//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
//sysnb Setresuid(ruid int, euid int, suid int) (err error)
//sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
//sysnb Setreuid(ruid int, euid int) (err error)
//sys Shutdown(fd int, how int) (err error)
//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)

63
src/pkg/syscall/syscall_linux_arm.go
View File

@ -87,6 +87,69 @@ func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int6
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 }

50
src/pkg/syscall/zsyscall_linux_386.go
View File

@ -429,16 +429,6 @@ func Getppid() (ppid int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_GETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getrusage(who int, rusage *Rusage) (err error) {
_, _, e1 := RawSyscall(SYS_GETRUSAGE, uintptr(who), uintptr(unsafe.Pointer(rusage)), 0)
if e1 != 0 {
@ -608,6 +598,16 @@ func PivotRoot(newroot string, putold string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Prlimit(pid int, resource int, old *Rlimit, newlimit *Rlimit) (err error) {
_, _, e1 := RawSyscall6(SYS_PRLIMIT64, uintptr(pid), uintptr(resource), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(newlimit)), 0, 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Read(fd int, p []byte) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
@ -714,16 +714,6 @@ func Setpgid(pid int, pgid int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setsid() (pid int, err error) {
r0, _, e1 := RawSyscall(SYS_SETSID, 0, 0, 0)
pid = int(r0)
@ -1346,6 +1336,26 @@ func mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func getrlimit(resource int, rlim *rlimit32) (err error) {
_, _, e1 := RawSyscall(SYS_GETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setrlimit(resource int, rlim *rlimit32) (err error) {
_, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Gettimeofday(tv *Timeval) (err error) {
_, _, e1 := RawSyscall(SYS_GETTIMEOFDAY, uintptr(unsafe.Pointer(tv)), 0, 0)
if e1 != 0 {

50
src/pkg/syscall/zsyscall_linux_amd64.go
View File

@ -429,16 +429,6 @@ func Getppid() (ppid int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_GETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getrusage(who int, rusage *Rusage) (err error) {
_, _, e1 := RawSyscall(SYS_GETRUSAGE, uintptr(who), uintptr(unsafe.Pointer(rusage)), 0)
if e1 != 0 {
@ -608,6 +598,16 @@ func PivotRoot(newroot string, putold string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Prlimit(pid int, resource int, old *Rlimit, newlimit *Rlimit) (err error) {
_, _, e1 := RawSyscall6(SYS_PRLIMIT64, uintptr(pid), uintptr(resource), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(newlimit)), 0, 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Read(fd int, p []byte) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
@ -714,16 +714,6 @@ func Setpgid(pid int, pgid int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setsid() (pid int, err error) {
r0, _, e1 := RawSyscall(SYS_SETSID, 0, 0, 0)
pid = int(r0)
@ -1109,6 +1099,16 @@ func Getgid() (gid int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_GETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getuid() (uid int) {
r0, _, _ := RawSyscall(SYS_GETUID, 0, 0, 0)
uid = int(r0)
@ -1294,6 +1294,16 @@ func Setresuid(ruid int, euid int, suid int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setreuid(ruid int, euid int) (err error) {
_, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
if e1 != 0 {

50
src/pkg/syscall/zsyscall_linux_arm.go
View File

@ -429,16 +429,6 @@ func Getppid() (ppid int) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_GETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Getrusage(who int, rusage *Rusage) (err error) {
_, _, e1 := RawSyscall(SYS_GETRUSAGE, uintptr(who), uintptr(unsafe.Pointer(rusage)), 0)
if e1 != 0 {
@ -608,6 +598,16 @@ func PivotRoot(newroot string, putold string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Prlimit(pid int, resource int, old *Rlimit, newlimit *Rlimit) (err error) {
_, _, e1 := RawSyscall6(SYS_PRLIMIT64, uintptr(pid), uintptr(resource), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(newlimit)), 0, 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Read(fd int, p []byte) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
@ -714,16 +714,6 @@ func Setpgid(pid int, pgid int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setrlimit(resource int, rlim *Rlimit) (err error) {
_, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Setsid() (pid int, err error) {
r0, _, e1 := RawSyscall(SYS_SETSID, 0, 0, 0)
pid = int(r0)
@ -1520,3 +1510,23 @@ func mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func getrlimit(resource int, rlim *rlimit32) (err error) {
_, _, e1 := RawSyscall(SYS_GETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setrlimit(resource int, rlim *rlimit32) (err error) {
_, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
if e1 != 0 {
err = e1
}
return
}