1 // Copyright 2009,2010 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. 4 5 // OpenBSD system calls. 6 // This file is compiled as ordinary Go code, 7 // but it is also input to mksyscall, 8 // which parses the //sys lines and generates system call stubs. 9 // Note that sometimes we use a lowercase //sys name and wrap 10 // it in our own nicer implementation, either here or in 11 // syscall_bsd.go or syscall_unix.go. 12 13 package syscall 14 15 import "unsafe" 16 17 type SockaddrDatalink struct { 18 Len uint8 19 Family uint8 20 Index uint16 21 Type uint8 22 Nlen uint8 23 Alen uint8 24 Slen uint8 25 Data [24]int8 26 raw RawSockaddrDatalink 27 } 28 29 func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno) 30 31 func nametomib(name string) (mib []_C_int, err error) { 32 // Perform lookup via a binary search 33 left := 0 34 right := len(sysctlMib) - 1 35 for { 36 idx := left + (right-left)/2 37 switch { 38 case name == sysctlMib[idx].ctlname: 39 return sysctlMib[idx].ctloid, nil 40 case name > sysctlMib[idx].ctlname: 41 left = idx + 1 42 default: 43 right = idx - 1 44 } 45 if left > right { 46 break 47 } 48 } 49 return nil, EINVAL 50 } 51 52 func direntIno(buf []byte) (uint64, bool) { 53 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) 54 } 55 56 func direntReclen(buf []byte) (uint64, bool) { 57 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) 58 } 59 60 func direntNamlen(buf []byte) (uint64, bool) { 61 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) 62 } 63 64 func Pipe(p []int) error { 65 return Pipe2(p, 0) 66 } 67 68 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 69 func Pipe2(p []int, flags int) error { 70 if len(p) != 2 { 71 return EINVAL 72 } 73 var pp [2]_C_int 74 err := pipe2(&pp, flags) 75 p[0] = int(pp[0]) 76 p[1] = int(pp[1]) 77 return err 78 } 79 80 //sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error) 81 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 82 var rsa RawSockaddrAny 83 var len _Socklen = SizeofSockaddrAny 84 nfd, err = accept4(fd, &rsa, &len, flags) 85 if err != nil { 86 return 87 } 88 if len > SizeofSockaddrAny { 89 panic("RawSockaddrAny too small") 90 } 91 sa, err = anyToSockaddr(&rsa) 92 if err != nil { 93 Close(nfd) 94 nfd = 0 95 } 96 return 97 } 98 99 //sys getdents(fd int, buf []byte) (n int, err error) 100 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) { 101 return getdents(fd, buf) 102 } 103 104 // TODO, see golang.org/issue/5847 105 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 106 return -1, ENOSYS 107 } 108 109 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 110 var _p0 unsafe.Pointer 111 var bufsize uintptr 112 if len(buf) > 0 { 113 _p0 = unsafe.Pointer(&buf[0]) 114 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 115 } 116 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 117 n = int(r0) 118 if e1 != 0 { 119 err = e1 120 } 121 return 122 } 123 124 func setattrlistTimes(path string, times []Timespec) error { 125 // used on Darwin for UtimesNano 126 return ENOSYS 127 } 128 129 /* 130 * Exposed directly 131 */ 132 //sys Access(path string, mode uint32) (err error) 133 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 134 //sys Chdir(path string) (err error) 135 //sys Chflags(path string, flags int) (err error) 136 //sys Chmod(path string, mode uint32) (err error) 137 //sys Chown(path string, uid int, gid int) (err error) 138 //sys Chroot(path string) (err error) 139 //sys Close(fd int) (err error) 140 //sys Dup(fd int) (nfd int, err error) 141 //sys Dup2(from int, to int) (err error) 142 //sys Fchdir(fd int) (err error) 143 //sys Fchflags(fd int, flags int) (err error) 144 //sys Fchmod(fd int, mode uint32) (err error) 145 //sys Fchown(fd int, uid int, gid int) (err error) 146 //sys Flock(fd int, how int) (err error) 147 //sys Fpathconf(fd int, name int) (val int, err error) 148 //sys Fstat(fd int, stat *Stat_t) (err error) 149 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 150 //sys Fsync(fd int) (err error) 151 //sys Ftruncate(fd int, length int64) (err error) 152 //sysnb Getegid() (egid int) 153 //sysnb Geteuid() (uid int) 154 //sysnb Getgid() (gid int) 155 //sysnb Getpgid(pid int) (pgid int, err error) 156 //sysnb Getpgrp() (pgrp int) 157 //sysnb Getpid() (pid int) 158 //sysnb Getppid() (ppid int) 159 //sys Getpriority(which int, who int) (prio int, err error) 160 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 161 //sysnb Getrusage(who int, rusage *Rusage) (err error) 162 //sysnb Getsid(pid int) (sid int, err error) 163 //sysnb Gettimeofday(tv *Timeval) (err error) 164 //sysnb Getuid() (uid int) 165 //sys Issetugid() (tainted bool) 166 //sys Kill(pid int, signum Signal) (err error) 167 //sys Kqueue() (fd int, err error) 168 //sys Lchown(path string, uid int, gid int) (err error) 169 //sys Link(path string, link string) (err error) 170 //sys Listen(s int, backlog int) (err error) 171 //sys Lstat(path string, stat *Stat_t) (err error) 172 //sys Mkdir(path string, mode uint32) (err error) 173 //sys Mkfifo(path string, mode uint32) (err error) 174 //sys Mknod(path string, mode uint32, dev int) (err error) 175 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 176 //sys Open(path string, mode int, perm uint32) (fd int, err error) 177 //sys Pathconf(path string, name int) (val int, err error) 178 //sys Pread(fd int, p []byte, offset int64) (n int, err error) 179 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) 180 //sys read(fd int, p []byte) (n int, err error) 181 //sys Readlink(path string, buf []byte) (n int, err error) 182 //sys Rename(from string, to string) (err error) 183 //sys Revoke(path string) (err error) 184 //sys Rmdir(path string) (err error) 185 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 186 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 187 //sysnb Setegid(egid int) (err error) 188 //sysnb Seteuid(euid int) (err error) 189 //sysnb Setgid(gid int) (err error) 190 //sys Setlogin(name string) (err error) 191 //sysnb Setpgid(pid int, pgid int) (err error) 192 //sys Setpriority(which int, who int, prio int) (err error) 193 //sysnb Setregid(rgid int, egid int) (err error) 194 //sysnb Setreuid(ruid int, euid int) (err error) 195 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 196 //sysnb Setsid() (pid int, err error) 197 //sysnb Settimeofday(tp *Timeval) (err error) 198 //sysnb Setuid(uid int) (err error) 199 //sys Stat(path string, stat *Stat_t) (err error) 200 //sys Statfs(path string, stat *Statfs_t) (err error) 201 //sys Symlink(path string, link string) (err error) 202 //sys Sync() (err error) 203 //sys Truncate(path string, length int64) (err error) 204 //sys Umask(newmask int) (oldmask int) 205 //sys Unlink(path string) (err error) 206 //sys Unmount(path string, flags int) (err error) 207 //sys write(fd int, p []byte) (n int, err error) 208 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 209 //sys munmap(addr uintptr, length uintptr) (err error) 210 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 211 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 212 //sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error) 213 //sys getcwd(buf []byte) (n int, err error) = SYS___GETCWD 214 //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL 215