--- /dev/null +++ b/src/libgo/go/syscall/libcall_posix-1.go @@ -0,0 +1,397 @@ +// Copyright 2011 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 file. + +// POSIX library calls. +// Removed the mount call for GNU/Hurd, it exists but use translators. +// Functionality is not the same as descibed in sys/mount.h +// This file is compiled as ordinary Go code, +// but it is also input to mksyscall, +// which parses the //sys lines and generates library call stubs. +// Note that sometimes we use a lowercase //sys name and +// wrap it in our own nicer implementation. + +package syscall + +import "unsafe" + +/* + * Wrapped + */ + +//sysnb pipe(p *[2]_C_int) (err error) +//pipe(p *[2]_C_int) _C_int +func Pipe(p []int) (err error) { + if len(p) != 2 { + return EINVAL + } + var pp [2]_C_int + err = pipe(&pp) + p[0] = int(pp[0]) + p[1] = int(pp[1]) + return +} + +//sys utimes(path string, times *[2]Timeval) (err error) +//utimes(path *byte, times *[2]Timeval) _C_int +func Utimes(path string, tv []Timeval) (err error) { + if len(tv) != 2 { + return EINVAL + } + return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +//sys getcwd(buf *byte, size Size_t) (err error) +//getcwd(buf *byte, size Size_t) *byte + +const ImplementsGetwd = true + +func Getwd() (ret string, err error) { + for len := Size_t(4096); ; len *= 2 { + b := make([]byte, len) + err := getcwd(&b[0], len) + if err == nil { + i := 0 + for b[i] != 0 { + i++ + } + return string(b[0:i]), nil + } + if err != ERANGE { + return "", err + } + } +} + +func Getcwd(buf []byte) (n int, err error) { + err = getcwd(&buf[0], Size_t(len(buf))) + if err == nil { + i := 0 + for buf[i] != 0 { + i++ + } + n = i +1 + } + return +} + +//sysnb getgroups(size int, list *Gid_t) (nn int, err error) +//getgroups(size _C_int, list *Gid_t) _C_int + +func Getgroups() (gids []int, err error) { + n, err := getgroups(0, nil) + if err != nil { + return nil, err + } + if n == 0 { + return nil, nil + } + + // Sanity check group count. Max is 1<<16 on GNU/Linux. + if n < 0 || n > 1<<20 { + return nil, EINVAL + } + + a := make([]Gid_t, n) + n, err = getgroups(n, &a[0]) + if err != nil { + return nil, err + } + gids = make([]int, n) + for i, v := range a[0:n] { + gids[i] = int(v) + } + return +} + +//sysnb setgroups(n int, list *Gid_t) (err error) +//setgroups(n Size_t, list *Gid_t) _C_int + +func Setgroups(gids []int) (err error) { + if len(gids) == 0 { + return setgroups(0, nil) + } + + a := make([]Gid_t, len(gids)) + for i, v := range gids { + a[i] = Gid_t(v) + } + return setgroups(len(a), &a[0]) +} + +type WaitStatus uint32 + +// The WaitStatus methods are implemented in C, to pick up the macros +// #defines in . + +func (w WaitStatus) Exited() bool +func (w WaitStatus) Signaled() bool +func (w WaitStatus) Stopped() bool +func (w WaitStatus) Continued() bool +func (w WaitStatus) CoreDump() bool +func (w WaitStatus) ExitStatus() int +func (w WaitStatus) Signal() Signal +func (w WaitStatus) StopSignal() Signal +func (w WaitStatus) TrapCause() int + +//sys Mkfifo(path string, mode uint32) (err error) +//mkfifo(path *byte, mode Mode_t) _C_int + +//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) +//select(nfd _C_int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) _C_int + +const nfdbits = int(unsafe.Sizeof(fds_bits_type) * 8) + +type FdSet struct { + Bits [(FD_SETSIZE +nfdbits - 1) / nfdbits]fds_bits_type +} + +func FDSet(fd int, set *FdSet) { + set.Bits[fd/nfdbits] |= (1 << (uint)(fd%nfdbits)) +} + +func FDClr(fd int, set *FdSet) { + set.Bits[fd/nfdbits] &^= (1 << (uint)(fd%nfdbits)) +} + +func FDIsSet(fd int, set *FdSet) bool { + if set.Bits[fd/nfdbits]&(1<<(uint)(fd%nfdbits)) != 0 { + return true + } else { + return false + } +} + +func FDZero(set *FdSet) { + for i := range set.Bits { + set.Bits[i] = 0 + } +} + +//sys Access(path string, mode uint32) (err error) +//access(path *byte, mode _C_int) _C_int + +//sys Chdir(path string) (err error) +//chdir(path *byte) _C_int + +//sys Chmod(path string, mode uint32) (err error) +//chmod(path *byte, mode Mode_t) _C_int + +//sys Chown(path string, uid int, gid int) (err error) +//chown(path *byte, uid Uid_t, gid Gid_t) _C_int + +//sys Chroot(path string) (err error) +//chroot(path *byte) _C_int + +//sys Close(fd int) (err error) +//close(fd _C_int) _C_int + +//sys Creat(path string, mode uint32) (fd int, err error) +//creat(path *byte, mode Mode_t) _C_int + +//sysnb Dup(oldfd int) (fd int, err error) +//dup(oldfd _C_int) _C_int + +//sysnb Dup2(oldfd int, newfd int) (err error) +//dup2(oldfd _C_int, newfd _C_int) _C_int + +//sys Exit(code int) +//exit(code _C_int) + +//sys Fchdir(fd int) (err error) +//fchdir(fd _C_int) _C_int + +//sys Fchmod(fd int, mode uint32) (err error) +//fchmod(fd _C_int, mode Mode_t) _C_int + +//sys Fchown(fd int, uid int, gid int) (err error) +//fchown(fd _C_int, uid Uid_t, gid Gid_t) _C_int + +//sys fcntl(fd int, cmd int, arg int) (val int, err error) +//__go_fcntl(fd _C_int, cmd _C_int, arg _C_int) _C_int + +//sys Fdatasync(fd int) (err error) +//fdatasync(fd _C_int) _C_int + +//sys Fsync(fd int) (err error) +//fsync(fd _C_int) _C_int + +//sysnb Getegid() (egid int) +//getegid() Gid_t + +//sysnb Geteuid() (euid int) +//geteuid() Uid_t + +//sysnb Getgid() (gid int) +//getgid() Gid_t + +//sysnb Getpagesize() (pagesize int) +//getpagesize() _C_int + +//sysnb Getpgid(pid int) (pgid int, err error) +//getpgid(pid Pid_t) Pid_t + +//sysnb Getpgrp() (pid int) +//getpgrp() Pid_t + +//sysnb Getpid() (pid int) +//getpid() Pid_t + +//sysnb Getppid() (ppid int) +//getppid() Pid_t + +//sys Getpriority(which int, who int) (prio int, err error) +//getpriority(which _C_int, who _C_int) _C_int + +//sysnb Getrlimit(resource int, rlim *Rlimit) (err error) +//getrlimit(resource _C_int, rlim *Rlimit) _C_int + +//sysnb Getrusage(who int, rusage *Rusage) (err error) +//getrusage(who _C_int, rusage *Rusage) _C_int + +//sysnb gettimeofday(tv *Timeval, tz *byte) (err error) +//gettimeofday(tv *Timeval, tz *byte) _C_int +func Gettimeofday(tv *Timeval) (err error) { + return gettimeofday(tv, nil) +} + +//sysnb Getuid() (uid int) +//getuid() Uid_t + +//sysnb Kill(pid int, sig Signal) (err error) +//kill(pid Pid_t, sig _C_int) _C_int + +//sys Lchown(path string, uid int, gid int) (err error) +//lchown(path *byte, uid Uid_t, gid Gid_t) _C_int + +//sys Link(oldpath string, newpath string) (err error) +//link(oldpath *byte, newpath *byte) _C_int + +//sys Mkdir(path string, mode uint32) (err error) +//mkdir(path *byte, mode Mode_t) _C_int + +//sys Mknod(path string, mode uint32, dev int) (err error) +//mknod(path *byte, mode Mode_t, dev _dev_t) _C_int + +//sys Nanosleep(time *Timespec, leftover *Timespec) (err error) +//nanosleep(time *Timespec, leftover *Timespec) _C_int + +//sys Pause() (err error) +//pause() _C_int + +//sys read(fd int, p []byte) (n int, err error) +//read(fd _C_int, buf *byte, count Size_t) Ssize_t + +//sys readlen(fd int, p *byte, np int) (n int, err error) +//read(fd _C_int, buf *byte, count Size_t) Ssize_t + +//sys Readlink(path string, buf []byte) (n int, err error) +//readlink(path *byte, buf *byte, bufsiz Size_t) Ssize_t + +//sys Rename(oldpath string, newpath string) (err error) +//rename(oldpath *byte, newpath *byte) _C_int + +//sys Rmdir(path string) (err error) +//rmdir(path *byte) _C_int + +//sys Setdomainname(p []byte) (err error) +//setdomainname(name *byte, len Size_t) _C_int + +//sys Sethostname(p []byte) (err error) +//sethostname(name *byte, len Size_t) _C_int + +//sysnb Setgid(gid int) (err error) +//setgid(gid Gid_t) _C_int + +//sysnb Setregid(rgid int, egid int) (err error) +//setregid(rgid Gid_t, egid Gid_t) _C_int + +//sysnb Setpgid(pid int, pgid int) (err error) +//setpgid(pid Pid_t, pgid Pid_t) _C_int + +//sys Setpriority(which int, who int, prio int) (err error) +//setpriority(which _C_int, who _C_int, prio _C_int) _C_int + +//sysnb Setreuid(ruid int, euid int) (err error) +//setreuid(ruid Uid_t, euid Uid_t) _C_int + +//sysnb Setrlimit(resource int, rlim *Rlimit) (err error) +//setrlimit(resource int, rlim *Rlimit) _C_int + +//sysnb Setsid() (pid int, err error) +//setsid() Pid_t + +//sysnb settimeofday(tv *Timeval, tz *byte) (err error) +//settimeofday(tv *Timeval, tz *byte) _C_int + +func Settimeofday(tv *Timeval) (err error) { + return settimeofday(tv, nil) +} + +//sysnb Setuid(uid int) (err error) +//setuid(uid Uid_t) _C_int + +//sys Symlink(oldpath string, newpath string) (err error) +//symlink(oldpath *byte, newpath *byte) _C_int + +//sys Sync() +//sync() + +//sysnb Time(t *Time_t) (tt Time_t, err error) +//time(t *Time_t) Time_t + +//sysnb Times(tms *Tms) (ticks uintptr, err error) +//times(tms *Tms) _clock_t + +//sysnb Umask(mask int) (oldmask int) +//umask(mask Mode_t) Mode_t + +//sys Unlink(path string) (err error) +//unlink(path *byte) _C_int + +//sys Utime(path string, buf *Utimbuf) (err error) +//utime(path *byte, buf *Utimbuf) _C_int + +//sys write(fd int, p []byte) (n int, err error) +//write(fd _C_int, buf *byte, count Size_t) Ssize_t + +//sys writelen(fd int, p *byte, np int) (n int, err error) +//write(fd _C_int, buf *byte, count Size_t) Ssize_t + +//sys munmap(addr uintptr, length uintptr) (err error) +//munmap(addr *byte, length Size_t) _C_int + +//sys Madvise(b []byte, advice int) (err error) +//madvise(addr *byte, len Size_t, advice _C_int) _C_int + +//sys Mprotect(b []byte, prot int) (err error) +//mprotect(addr *byte, len Size_t, prot _C_int) _C_int + +//sys Mlock(b []byte) (err error) +//mlock(addr *byte, len Size_t) _C_int + +//sys Munlock(b []byte) (err error) +//munlock(addr *byte, len Size_t) _C_int + +func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 +int64(ts.Nsec) } + +func NsecToTimespec(nsec int64) (ts Timespec) { + ts.Sec = Timespec_sec_t(nsec / 1e9) + ts.Nsec = Timespec_nsec_t(nsec % 1e9) + return +} + +func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 +int64(tv.Usec)*1e3 } + +func NsecToTimeval(nsec int64) (tv Timeval) { + nsec += 999 // round up to microsecond + tv.Sec = Timeval_sec_t(nsec / 1e9) + tv.Usec = Timeval_usec_t(nsec % 1e9 / 1e3) + return +} + +//sysnb Tcgetattr(fd int, p *Termios) (err error) +//tcgetattr(fd _C_int, p *Termios) _C_int + +//sys Tcsetattr(fd int, actions int, p *Termios) (err error) +//tcsetattr(fd _C_int, actions _C_int, p *Termios) _C_int