1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
10 _SYS_setgroups = SYS_SETGROUPS32
15 func setTimespec(sec, nsec int64) Timespec {
16 return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
19 func setTimeval(sec, usec int64) Timeval {
20 return Timeval{Sec: int32(sec), Usec: int32(usec)}
23 // Underlying system call writes to newoffset via pointer.
24 // Implemented in assembly to avoid allocation.
25 func seek(fd int, offset int64, whence int) (newoffset int64, err Errno)
27 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
28 newoffset, errno := seek(fd, offset, whence)
35 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
36 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
37 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
38 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
39 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
40 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
41 //sysnb socket(domain int, typ int, proto int) (fd int, err error)
42 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
43 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
44 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
45 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
46 //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error)
47 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
48 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
50 // 64-bit file system and 32-bit uid calls
51 // (16-bit uid calls are not always supported in newer kernels)
52 //sys Dup2(oldfd int, newfd int) (err error)
53 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32
54 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
55 //sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
56 //sysnb Getegid() (egid int) = SYS_GETEGID32
57 //sysnb Geteuid() (euid int) = SYS_GETEUID32
58 //sysnb Getgid() (gid int) = SYS_GETGID32
59 //sysnb Getuid() (uid int) = SYS_GETUID32
60 //sysnb InotifyInit() (fd int, err error)
61 //sys Listen(s int, n int) (err error)
62 //sys Pause() (err error)
63 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
64 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
65 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
66 //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32
67 //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32
68 //sys Shutdown(fd int, how int) (err error)
69 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
70 //sys Ustat(dev int, ubuf *Ustat_t) (err error)
72 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
73 //sysnb Gettimeofday(tv *Timeval) (err error)
74 //sysnb Time(t *Time_t) (tt Time_t, err error)
75 //sys Utime(path string, buf *Utimbuf) (err error)
76 //sys utimes(path string, times *[2]Timeval) (err error)
78 //sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
79 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
80 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
81 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
83 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
84 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
86 func Stat(path string, stat *Stat_t) (err error) {
87 return fstatat(_AT_FDCWD, path, stat, 0)
90 func Lchown(path string, uid int, gid int) (err error) {
91 return Fchownat(_AT_FDCWD, path, uid, gid, _AT_SYMLINK_NOFOLLOW)
94 func Lstat(path string, stat *Stat_t) (err error) {
95 return fstatat(_AT_FDCWD, path, stat, _AT_SYMLINK_NOFOLLOW)
98 func Fstatfs(fd int, buf *Statfs_t) (err error) {
99 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
106 func Statfs(path string, buf *Statfs_t) (err error) {
107 pathp, err := BytePtrFromString(path)
111 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
118 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
119 page := uintptr(offset / 4096)
120 if offset != int64(page)*4096 {
123 return mmap2(addr, length, prot, flags, fd, page)
126 type rlimit32 struct {
131 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT
133 const rlimInf32 = ^uint32(0)
134 const rlimInf64 = ^uint64(0)
136 func Getrlimit(resource int, rlim *Rlimit) (err error) {
137 err = prlimit(0, resource, nil, rlim)
143 err = getrlimit(resource, &rl)
148 if rl.Cur == rlimInf32 {
151 rlim.Cur = uint64(rl.Cur)
154 if rl.Max == rlimInf32 {
157 rlim.Max = uint64(rl.Max)
162 //sysnb setrlimit1(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
164 func setrlimit(resource int, rlim *Rlimit) (err error) {
165 err = prlimit(0, resource, rlim, nil)
171 if rlim.Cur == rlimInf64 {
173 } else if rlim.Cur < uint64(rlimInf32) {
174 rl.Cur = uint32(rlim.Cur)
178 if rlim.Max == rlimInf64 {
180 } else if rlim.Max < uint64(rlimInf32) {
181 rl.Max = uint32(rlim.Max)
186 return setrlimit1(resource, &rl)
190 func rawSetrlimit(resource int, rlim *Rlimit) Errno {
191 _, _, errno := RawSyscall6(SYS_PRLIMIT64, 0, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0, 0, 0)
197 if rlim.Cur == rlimInf64 {
199 } else if rlim.Cur < uint64(rlimInf32) {
200 rl.Cur = uint32(rlim.Cur)
204 if rlim.Max == rlimInf64 {
206 } else if rlim.Max < uint64(rlimInf32) {
207 rl.Max = uint32(rlim.Max)
212 _, _, errno = RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
216 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) }
218 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) }
220 func (iov *Iovec) SetLen(length int) {
221 iov.Len = uint32(length)
224 func (msghdr *Msghdr) SetControllen(length int) {
225 msghdr.Controllen = uint32(length)
228 func (cmsg *Cmsghdr) SetLen(length int) {
229 cmsg.Len = uint32(length)