diff options
Diffstat (limited to 'src/cmd/vendor/golang.org/x/sys/unix/syscall_freebsd.go')
| -rw-r--r-- | src/cmd/vendor/golang.org/x/sys/unix/syscall_freebsd.go | 327 |
1 files changed, 36 insertions, 291 deletions
diff --git a/src/cmd/vendor/golang.org/x/sys/unix/syscall_freebsd.go b/src/cmd/vendor/golang.org/x/sys/unix/syscall_freebsd.go index 6f6c510f41..de7c23e064 100644 --- a/src/cmd/vendor/golang.org/x/sys/unix/syscall_freebsd.go +++ b/src/cmd/vendor/golang.org/x/sys/unix/syscall_freebsd.go @@ -17,25 +17,12 @@ import ( "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, \ - SYS_GETDIRENTRIES_FREEBSD12 = 554 // { ssize_t getdirentries(int fd, \ - SYS_STATFS_FREEBSD12 = 555 // { int statfs(_In_z_ char *path, \ - SYS_FSTATFS_FREEBSD12 = 556 // { int fstatfs(int fd, \ - SYS_GETFSSTAT_FREEBSD12 = 557 // { int getfsstat( \ - SYS_MKNODAT_FREEBSD12 = 559 // { int mknodat(int fd, _In_z_ char *path, \ -) - // 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 @@ -159,38 +146,18 @@ func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { var ( - _p0 unsafe.Pointer - bufsize uintptr - oldBuf []statfs_freebsd11_t - needsConvert bool + _p0 unsafe.Pointer + bufsize uintptr ) - 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 - } + _p0 = unsafe.Pointer(&buf[0]) + bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) } - var sysno uintptr = SYS_GETFSSTAT - if supportsABI(_ino64First) { - sysno = SYS_GETFSSTAT_FREEBSD12 - } - r0, _, e1 := Syscall(sysno, uintptr(_p0), bufsize, uintptr(flags)) + r0, _, e1 := Syscall(SYS_GETFSSTAT, 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 } @@ -245,87 +212,11 @@ func Uname(uname *Utsname) error { } 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 + return Fstatat(AT_FDCWD, path, st, 0) } 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 + return Fstatat(AT_FDCWD, path, st, AT_SYMLINK_NOFOLLOW) } func Getdents(fd int, buf []byte) (n int, err error) { @@ -333,162 +224,25 @@ func Getdents(fd int, buf []byte) (n int, err error) { } 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]) + if basep == nil || unsafe.Sizeof(*basep) == 8 { + return getdirentries(fd, buf, (*uint64)(unsafe.Pointer(basep))) + } + // The 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(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 } 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) -} - -func Mknodat(fd int, path string, mode uint32, dev uint64) (err error) { - var oldDev int - if supportsABI(_ino64First) { - return mknodat_freebsd12(fd, path, mode, dev) - } - oldDev = int(dev) - return mknodat(fd, 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), - Atim: old.Atim, - Mtim: old.Mtim, - Ctim: old.Ctim, - Btim: old.Btim, - 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 + return Mknodat(AT_FDCWD, path, mode, dev) } func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { @@ -501,31 +255,31 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //sys ptrace(request int, pid int, addr uintptr, data int) (err error) func PtraceAttach(pid int) (err error) { - return ptrace(PTRACE_ATTACH, pid, 0, 0) + return ptrace(PT_ATTACH, pid, 0, 0) } func PtraceCont(pid int, signal int) (err error) { - return ptrace(PTRACE_CONT, pid, 1, signal) + return ptrace(PT_CONTINUE, pid, 1, signal) } func PtraceDetach(pid int) (err error) { - return ptrace(PTRACE_DETACH, pid, 1, 0) + return ptrace(PT_DETACH, pid, 1, 0) } func PtraceGetFpRegs(pid int, fpregsout *FpReg) (err error) { - return ptrace(PTRACE_GETFPREGS, pid, uintptr(unsafe.Pointer(fpregsout)), 0) + return ptrace(PT_GETFPREGS, pid, uintptr(unsafe.Pointer(fpregsout)), 0) } func PtraceGetRegs(pid int, regsout *Reg) (err error) { - return ptrace(PTRACE_GETREGS, pid, uintptr(unsafe.Pointer(regsout)), 0) + return ptrace(PT_GETREGS, pid, uintptr(unsafe.Pointer(regsout)), 0) } func PtraceLwpEvents(pid int, enable int) (err error) { - return ptrace(PTRACE_LWPEVENTS, pid, 0, enable) + return ptrace(PT_LWP_EVENTS, pid, 0, enable) } func PtraceLwpInfo(pid int, info uintptr) (err error) { - return ptrace(PTRACE_LWPINFO, pid, info, int(unsafe.Sizeof(PtraceLwpInfoStruct{}))) + return ptrace(PT_LWPINFO, pid, info, int(unsafe.Sizeof(PtraceLwpInfoStruct{}))) } func PtracePeekData(pid int, addr uintptr, out []byte) (count int, err error) { @@ -545,11 +299,11 @@ func PtracePokeText(pid int, addr uintptr, data []byte) (count int, err error) { } func PtraceSetRegs(pid int, regs *Reg) (err error) { - return ptrace(PTRACE_SETREGS, pid, uintptr(unsafe.Pointer(regs)), 0) + return ptrace(PT_SETREGS, pid, uintptr(unsafe.Pointer(regs)), 0) } func PtraceSingleStep(pid int) (err error) { - return ptrace(PTRACE_SINGLESTEP, pid, 1, 0) + return ptrace(PT_STEP, pid, 1, 0) } /* @@ -591,16 +345,12 @@ func PtraceSingleStep(pid int) (err error) { //sys Fchownat(dirfd int, path string, uid int, gid int, flags 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 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 fstatfs(fd int, stat *statfs_freebsd11_t) (err error) -//sys fstatfs_freebsd12(fd int, stat *Statfs_t) (err error) +//sys Fstat(fd int, stat *Stat_t) (err error) +//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) +//sys Fstatfs(fd int, stat *Statfs_t) (err error) //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(fd int, buf []byte, basep *uint64) (n int, err error) //sys Getdtablesize() (size int) //sysnb Getegid() (egid int) //sysnb Geteuid() (uid int) @@ -622,13 +372,10 @@ func PtraceSingleStep(pid int) (err error) { //sys Link(path string, link string) (err error) //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (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 Mkdirat(dirfd int, 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(fd int, path string, mode uint32, dev int) (err error) -//sys mknodat_freebsd12(fd int, path string, mode uint32, dev uint64) (err error) +//sys Mknodat(fd int, path string, mode uint32, dev uint64) (err error) //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) //sys Open(path string, mode int, perm uint32) (fd int, err error) //sys Openat(fdat int, path string, mode int, perm uint32) (fd int, err error) @@ -658,9 +405,7 @@ func PtraceSingleStep(pid int) (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(path string, stat *Statfs_t) (err error) //sys Symlink(path string, link string) (err error) //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error) //sys Sync() (err error) |