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-rw-r--r--src/syscall/syscall_freebsd.go514
1 files changed, 514 insertions, 0 deletions
diff --git a/src/syscall/syscall_freebsd.go b/src/syscall/syscall_freebsd.go
new file mode 100644
index 0000000..7c7b89a
--- /dev/null
+++ b/src/syscall/syscall_freebsd.go
@@ -0,0 +1,514 @@
+// Copyright 2009,2010 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.
+
+// FreeBSD system calls.
+// This file is compiled as ordinary Go code,
+// but it is also input to mksyscall,
+// which parses the //sys lines and generates system call stubs.
+// Note that sometimes we use a lowercase //sys name and wrap
+// it in our own nicer implementation, either here or in
+// syscall_bsd.go or syscall_unix.go.
+
+package syscall
+
+import (
+ "sync"
+ "unsafe"
+)
+
+const (
+ _SYS_FSTAT_FREEBSD12 = 551 // { int fstat(int fd, _Out_ struct stat *sb); }
+ _SYS_FSTATAT_FREEBSD12 = 552 // { int fstatat(int fd, _In_z_ char *path, _Out_ struct stat *buf, int flag); }
+ _SYS_GETDIRENTRIES_FREEBSD12 = 554 // { ssize_t getdirentries(int fd, _Out_writes_bytes_(count) char *buf, size_t count, _Out_ off_t *basep); }
+ _SYS_STATFS_FREEBSD12 = 555 // { int statfs(_In_z_ char *path, _Out_ struct statfs *buf); }
+ _SYS_FSTATFS_FREEBSD12 = 556 // { int fstatfs(int fd, _Out_ struct statfs *buf); }
+ _SYS_GETFSSTAT_FREEBSD12 = 557 // { int getfsstat(_Out_writes_bytes_opt_(bufsize) struct statfs *buf, long bufsize, int mode); }
+ _SYS_MKNODAT_FREEBSD12 = 559 // { int mknodat(int fd, _In_z_ char *path, mode_t mode, dev_t dev); }
+)
+
+// See https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/versions.html.
+var (
+ osreldateOnce sync.Once
+ osreldate uint32
+)
+
+// INO64_FIRST from /usr/src/lib/libc/sys/compat-ino64.h
+const _ino64First = 1200031
+
+func supportsABI(ver uint32) bool {
+ osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") })
+ return osreldate >= ver
+}
+
+type SockaddrDatalink struct {
+ Len uint8
+ Family uint8
+ Index uint16
+ Type uint8
+ Nlen uint8
+ Alen uint8
+ Slen uint8
+ Data [46]int8
+ raw RawSockaddrDatalink
+}
+
+// Translate "kern.hostname" to []_C_int{0,1,2,3}.
+func nametomib(name string) (mib []_C_int, err error) {
+ const siz = unsafe.Sizeof(mib[0])
+
+ // NOTE(rsc): It seems strange to set the buffer to have
+ // size CTL_MAXNAME+2 but use only CTL_MAXNAME
+ // as the size. I don't know why the +2 is here, but the
+ // kernel uses +2 for its own implementation of this function.
+ // I am scared that if we don't include the +2 here, the kernel
+ // will silently write 2 words farther than we specify
+ // and we'll get memory corruption.
+ var buf [CTL_MAXNAME + 2]_C_int
+ n := uintptr(CTL_MAXNAME) * siz
+
+ p := (*byte)(unsafe.Pointer(&buf[0]))
+ bytes, err := ByteSliceFromString(name)
+ if err != nil {
+ return nil, err
+ }
+
+ // Magic sysctl: "setting" 0.3 to a string name
+ // lets you read back the array of integers form.
+ if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
+ return nil, err
+ }
+ return buf[0 : n/siz], nil
+}
+
+func direntIno(buf []byte) (uint64, bool) {
+ return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
+}
+
+func direntReclen(buf []byte) (uint64, bool) {
+ return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
+}
+
+func direntNamlen(buf []byte) (uint64, bool) {
+ return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
+}
+
+func Pipe(p []int) error {
+ return Pipe2(p, 0)
+}
+
+//sysnb pipe2(p *[2]_C_int, flags int) (err error)
+
+func Pipe2(p []int, flags int) error {
+ if len(p) != 2 {
+ return EINVAL
+ }
+ var pp [2]_C_int
+ err := pipe2(&pp, flags)
+ p[0] = int(pp[0])
+ p[1] = int(pp[1])
+ return err
+}
+
+func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
+ var value IPMreqn
+ vallen := _Socklen(SizeofIPMreqn)
+ errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
+ return &value, errno
+}
+
+func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
+ return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
+}
+
+func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
+ var rsa RawSockaddrAny
+ var len _Socklen = SizeofSockaddrAny
+ nfd, err = accept4(fd, &rsa, &len, flags)
+ if err != nil {
+ return
+ }
+ if len > SizeofSockaddrAny {
+ panic("RawSockaddrAny too small")
+ }
+ sa, err = anyToSockaddr(&rsa)
+ if err != nil {
+ Close(nfd)
+ nfd = 0
+ }
+ return
+}
+
+func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
+ var (
+ _p0 unsafe.Pointer
+ bufsize uintptr
+ oldBuf []statfs_freebsd11_t
+ needsConvert bool
+ )
+
+ if len(buf) > 0 {
+ if supportsABI(_ino64First) {
+ _p0 = unsafe.Pointer(&buf[0])
+ bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
+ } else {
+ n := len(buf)
+ oldBuf = make([]statfs_freebsd11_t, n)
+ _p0 = unsafe.Pointer(&oldBuf[0])
+ bufsize = unsafe.Sizeof(statfs_freebsd11_t{}) * uintptr(n)
+ needsConvert = true
+ }
+ }
+ var sysno uintptr = SYS_GETFSSTAT
+ if supportsABI(_ino64First) {
+ sysno = _SYS_GETFSSTAT_FREEBSD12
+ }
+ r0, _, e1 := Syscall(sysno, uintptr(_p0), bufsize, uintptr(flags))
+ n = int(r0)
+ if e1 != 0 {
+ err = e1
+ }
+ if e1 == 0 && needsConvert {
+ for i := range oldBuf {
+ buf[i].convertFrom(&oldBuf[i])
+ }
+ }
+ return
+}
+
+func setattrlistTimes(path string, times []Timespec) error {
+ // used on Darwin for UtimesNano
+ return ENOSYS
+}
+
+func Stat(path string, st *Stat_t) (err error) {
+ var oldStat stat_freebsd11_t
+ if supportsABI(_ino64First) {
+ return fstatat_freebsd12(_AT_FDCWD, path, st, 0)
+ }
+ err = stat(path, &oldStat)
+ if err != nil {
+ return err
+ }
+
+ st.convertFrom(&oldStat)
+ return nil
+}
+
+func Lstat(path string, st *Stat_t) (err error) {
+ var oldStat stat_freebsd11_t
+ if supportsABI(_ino64First) {
+ return fstatat_freebsd12(_AT_FDCWD, path, st, _AT_SYMLINK_NOFOLLOW)
+ }
+ err = lstat(path, &oldStat)
+ if err != nil {
+ return err
+ }
+
+ st.convertFrom(&oldStat)
+ return nil
+}
+
+func Fstat(fd int, st *Stat_t) (err error) {
+ var oldStat stat_freebsd11_t
+ if supportsABI(_ino64First) {
+ return fstat_freebsd12(fd, st)
+ }
+ err = fstat(fd, &oldStat)
+ if err != nil {
+ return err
+ }
+
+ st.convertFrom(&oldStat)
+ return nil
+}
+
+func Fstatat(fd int, path string, st *Stat_t, flags int) (err error) {
+ var oldStat stat_freebsd11_t
+ if supportsABI(_ino64First) {
+ return fstatat_freebsd12(fd, path, st, flags)
+ }
+ err = fstatat(fd, path, &oldStat, flags)
+ if err != nil {
+ return err
+ }
+
+ st.convertFrom(&oldStat)
+ return nil
+}
+
+func Statfs(path string, st *Statfs_t) (err error) {
+ var oldStatfs statfs_freebsd11_t
+ if supportsABI(_ino64First) {
+ return statfs_freebsd12(path, st)
+ }
+ err = statfs(path, &oldStatfs)
+ if err != nil {
+ return err
+ }
+
+ st.convertFrom(&oldStatfs)
+ return nil
+}
+
+func Fstatfs(fd int, st *Statfs_t) (err error) {
+ var oldStatfs statfs_freebsd11_t
+ if supportsABI(_ino64First) {
+ return fstatfs_freebsd12(fd, st)
+ }
+ err = fstatfs(fd, &oldStatfs)
+ if err != nil {
+ return err
+ }
+
+ st.convertFrom(&oldStatfs)
+ return nil
+}
+
+func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
+ if supportsABI(_ino64First) {
+ if basep == nil || unsafe.Sizeof(*basep) == 8 {
+ return getdirentries_freebsd12(fd, buf, (*uint64)(unsafe.Pointer(basep)))
+ }
+ // The freebsd12 syscall needs a 64-bit base. On 32-bit machines
+ // we can't just use the basep passed in. See #32498.
+ var base uint64 = uint64(*basep)
+ n, err = getdirentries_freebsd12(fd, buf, &base)
+ *basep = uintptr(base)
+ if base>>32 != 0 {
+ // We can't stuff the base back into a uintptr, so any
+ // future calls would be suspect. Generate an error.
+ // EIO is allowed by getdirentries.
+ err = EIO
+ }
+ return
+ }
+
+ // The old syscall entries are smaller than the new. Use 1/4 of the original
+ // buffer size rounded up to DIRBLKSIZ (see /usr/src/lib/libc/sys/getdirentries.c).
+ oldBufLen := roundup(len(buf)/4, _dirblksiz)
+ oldBuf := make([]byte, oldBufLen)
+ n, err = getdirentries(fd, oldBuf, basep)
+ if err == nil && n > 0 {
+ n = convertFromDirents11(buf, oldBuf[:n])
+ }
+ return
+}
+
+func Mknod(path string, mode uint32, dev uint64) (err error) {
+ var oldDev int
+ if supportsABI(_ino64First) {
+ return mknodat_freebsd12(_AT_FDCWD, path, mode, dev)
+ }
+ oldDev = int(dev)
+ return mknod(path, mode, oldDev)
+}
+
+// round x to the nearest multiple of y, larger or equal to x.
+//
+// from /usr/include/sys/param.h Macros for counting and rounding.
+// #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
+func roundup(x, y int) int {
+ return ((x + y - 1) / y) * y
+}
+
+func (s *Stat_t) convertFrom(old *stat_freebsd11_t) {
+ *s = Stat_t{
+ Dev: uint64(old.Dev),
+ Ino: uint64(old.Ino),
+ Nlink: uint64(old.Nlink),
+ Mode: old.Mode,
+ Uid: old.Uid,
+ Gid: old.Gid,
+ Rdev: uint64(old.Rdev),
+ Atimespec: old.Atimespec,
+ Mtimespec: old.Mtimespec,
+ Ctimespec: old.Ctimespec,
+ Birthtimespec: old.Birthtimespec,
+ Size: old.Size,
+ Blocks: old.Blocks,
+ Blksize: old.Blksize,
+ Flags: old.Flags,
+ Gen: uint64(old.Gen),
+ }
+}
+
+func (s *Statfs_t) convertFrom(old *statfs_freebsd11_t) {
+ *s = Statfs_t{
+ Version: _statfsVersion,
+ Type: old.Type,
+ Flags: old.Flags,
+ Bsize: old.Bsize,
+ Iosize: old.Iosize,
+ Blocks: old.Blocks,
+ Bfree: old.Bfree,
+ Bavail: old.Bavail,
+ Files: old.Files,
+ Ffree: old.Ffree,
+ Syncwrites: old.Syncwrites,
+ Asyncwrites: old.Asyncwrites,
+ Syncreads: old.Syncreads,
+ Asyncreads: old.Asyncreads,
+ // Spare
+ Namemax: old.Namemax,
+ Owner: old.Owner,
+ Fsid: old.Fsid,
+ // Charspare
+ // Fstypename
+ // Mntfromname
+ // Mntonname
+ }
+
+ sl := old.Fstypename[:]
+ n := clen(*(*[]byte)(unsafe.Pointer(&sl)))
+ copy(s.Fstypename[:], old.Fstypename[:n])
+
+ sl = old.Mntfromname[:]
+ n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
+ copy(s.Mntfromname[:], old.Mntfromname[:n])
+
+ sl = old.Mntonname[:]
+ n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
+ copy(s.Mntonname[:], old.Mntonname[:n])
+}
+
+func convertFromDirents11(buf []byte, old []byte) int {
+ const (
+ fixedSize = int(unsafe.Offsetof(Dirent{}.Name))
+ oldFixedSize = int(unsafe.Offsetof(dirent_freebsd11{}.Name))
+ )
+
+ dstPos := 0
+ srcPos := 0
+ for dstPos+fixedSize < len(buf) && srcPos+oldFixedSize < len(old) {
+ var dstDirent Dirent
+ var srcDirent dirent_freebsd11
+
+ // If multiple direntries are written, sometimes when we reach the final one,
+ // we may have cap of old less than size of dirent_freebsd11.
+ copy((*[unsafe.Sizeof(srcDirent)]byte)(unsafe.Pointer(&srcDirent))[:], old[srcPos:])
+
+ reclen := roundup(fixedSize+int(srcDirent.Namlen)+1, 8)
+ if dstPos+reclen > len(buf) {
+ break
+ }
+
+ dstDirent.Fileno = uint64(srcDirent.Fileno)
+ dstDirent.Off = 0
+ dstDirent.Reclen = uint16(reclen)
+ dstDirent.Type = srcDirent.Type
+ dstDirent.Pad0 = 0
+ dstDirent.Namlen = uint16(srcDirent.Namlen)
+ dstDirent.Pad1 = 0
+
+ copy(dstDirent.Name[:], srcDirent.Name[:srcDirent.Namlen])
+ copy(buf[dstPos:], (*[unsafe.Sizeof(dstDirent)]byte)(unsafe.Pointer(&dstDirent))[:])
+ padding := buf[dstPos+fixedSize+int(dstDirent.Namlen) : dstPos+reclen]
+ for i := range padding {
+ padding[i] = 0
+ }
+
+ dstPos += int(dstDirent.Reclen)
+ srcPos += int(srcDirent.Reclen)
+ }
+
+ return dstPos
+}
+
+/*
+ * Exposed directly
+ */
+//sys Access(path string, mode uint32) (err error)
+//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
+//sys Chdir(path string) (err error)
+//sys Chflags(path string, flags int) (err error)
+//sys Chmod(path string, mode uint32) (err error)
+//sys Chown(path string, uid int, gid int) (err error)
+//sys Chroot(path string) (err error)
+//sys Close(fd int) (err error)
+//sys Dup(fd int) (nfd int, err error)
+//sys Dup2(from int, to int) (err error)
+//sys Fchdir(fd int) (err error)
+//sys Fchflags(fd int, flags int) (err error)
+//sys Fchmod(fd int, mode uint32) (err error)
+//sys Fchown(fd int, uid int, gid int) (err error)
+//sys Flock(fd int, how int) (err error)
+//sys Fpathconf(fd int, name int) (val int, err error)
+//sys fstat(fd int, stat *stat_freebsd11_t) (err error)
+//sys fstat_freebsd12(fd int, stat *Stat_t) (err error) = _SYS_FSTAT_FREEBSD12
+//sys fstatat(fd int, path string, stat *stat_freebsd11_t, flags int) (err error)
+//sys fstatat_freebsd12(fd int, path string, stat *Stat_t, flags int) (err error) = _SYS_FSTATAT_FREEBSD12
+//sys fstatfs(fd int, stat *statfs_freebsd11_t) (err error)
+//sys fstatfs_freebsd12(fd int, stat *Statfs_t) (err error) = _SYS_FSTATFS_FREEBSD12
+//sys Fsync(fd int) (err error)
+//sys Ftruncate(fd int, length int64) (err error)
+//sys getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
+//sys getdirentries_freebsd12(fd int, buf []byte, basep *uint64) (n int, err error) = _SYS_GETDIRENTRIES_FREEBSD12
+//sys Getdtablesize() (size int)
+//sysnb Getegid() (egid int)
+//sysnb Geteuid() (uid int)
+//sysnb Getgid() (gid int)
+//sysnb Getpgid(pid int) (pgid int, err error)
+//sysnb Getpgrp() (pgrp int)
+//sysnb Getpid() (pid int)
+//sysnb Getppid() (ppid int)
+//sys Getpriority(which int, who int) (prio int, err error)
+//sysnb Getrlimit(which int, lim *Rlimit) (err error)
+//sysnb Getrusage(who int, rusage *Rusage) (err error)
+//sysnb Getsid(pid int) (sid int, err error)
+//sysnb Gettimeofday(tv *Timeval) (err error)
+//sysnb Getuid() (uid int)
+//sys Issetugid() (tainted bool)
+//sys Kill(pid int, signum Signal) (err error)
+//sys Kqueue() (fd int, err error)
+//sys Lchown(path string, uid int, gid int) (err error)
+//sys Link(path string, link string) (err error)
+//sys Listen(s int, backlog int) (err error)
+//sys lstat(path string, stat *stat_freebsd11_t) (err error)
+//sys Mkdir(path string, mode uint32) (err error)
+//sys Mkfifo(path string, mode uint32) (err error)
+//sys mknod(path string, mode uint32, dev int) (err error)
+//sys mknodat_freebsd12(fd int, path string, mode uint32, dev uint64) (err error) = _SYS_MKNODAT_FREEBSD12
+//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
+//sys Open(path string, mode int, perm uint32) (fd int, err error)
+//sys Pathconf(path string, name int) (val int, err error)
+//sys Pread(fd int, p []byte, offset int64) (n int, err error)
+//sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
+//sys read(fd int, p []byte) (n int, err error)
+//sys Readlink(path string, buf []byte) (n int, err error)
+//sys Rename(from string, to string) (err error)
+//sys Revoke(path string) (err error)
+//sys Rmdir(path string) (err error)
+//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
+//sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
+//sysnb Setegid(egid int) (err error)
+//sysnb Seteuid(euid int) (err error)
+//sysnb Setgid(gid int) (err error)
+//sys Setlogin(name string) (err error)
+//sysnb Setpgid(pid int, pgid int) (err error)
+//sys Setpriority(which int, who int, prio int) (err error)
+//sysnb Setregid(rgid int, egid int) (err error)
+//sysnb Setreuid(ruid int, euid int) (err error)
+//sysnb Setrlimit(which int, lim *Rlimit) (err error)
+//sysnb Setsid() (pid int, err error)
+//sysnb Settimeofday(tp *Timeval) (err error)
+//sysnb Setuid(uid int) (err error)
+//sys stat(path string, stat *stat_freebsd11_t) (err error)
+//sys statfs(path string, stat *statfs_freebsd11_t) (err error)
+//sys statfs_freebsd12(path string, stat *Statfs_t) (err error) = _SYS_STATFS_FREEBSD12
+//sys Symlink(path string, link string) (err error)
+//sys Sync() (err error)
+//sys Truncate(path string, length int64) (err error)
+//sys Umask(newmask int) (oldmask int)
+//sys Undelete(path string) (err error)
+//sys Unlink(path string) (err error)
+//sys Unmount(path string, flags int) (err error)
+//sys write(fd int, p []byte) (n int, err error)
+//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
+//sys munmap(addr uintptr, length uintptr) (err error)
+//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
+//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
+//sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
+//sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
+//sys getcwd(buf []byte) (n int, err error) = SYS___GETCWD
+//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-12 19:31:32 +0000