Source file src/syscall/syscall_netbsd.go
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 // NetBSD 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 func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno) 18 func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno) 19 func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno) 20 func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno) 21 func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno) 22 23 const ( 24 _SYS_DUP3 = SYS_DUP3 25 _F_DUP2FD_CLOEXEC = 0 26 ) 27 28 type SockaddrDatalink struct { 29 Len uint8 30 Family uint8 31 Index uint16 32 Type uint8 33 Nlen uint8 34 Alen uint8 35 Slen uint8 36 Data [12]int8 37 raw RawSockaddrDatalink 38 } 39 40 func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) { 41 var olen uintptr 42 43 // Get a list of all sysctl nodes below the given MIB by performing 44 // a sysctl for the given MIB with CTL_QUERY appended. 45 mib = append(mib, CTL_QUERY) 46 qnode := Sysctlnode{Flags: SYSCTL_VERS_1} 47 qp := (*byte)(unsafe.Pointer(&qnode)) 48 sz := unsafe.Sizeof(qnode) 49 if err = sysctl(mib, nil, &olen, qp, sz); err != nil { 50 return nil, err 51 } 52 53 // Now that we know the size, get the actual nodes. 54 nodes = make([]Sysctlnode, olen/sz) 55 np := (*byte)(unsafe.Pointer(&nodes[0])) 56 if err = sysctl(mib, np, &olen, qp, sz); err != nil { 57 return nil, err 58 } 59 60 return nodes, nil 61 } 62 63 func nametomib(name string) (mib []_C_int, err error) { 64 // Split name into components. 65 var parts []string 66 last := 0 67 for i := 0; i < len(name); i++ { 68 if name[i] == '.' { 69 parts = append(parts, name[last:i]) 70 last = i + 1 71 } 72 } 73 parts = append(parts, name[last:]) 74 75 // Discover the nodes and construct the MIB OID. 76 for partno, part := range parts { 77 nodes, err := sysctlNodes(mib) 78 if err != nil { 79 return nil, err 80 } 81 for _, node := range nodes { 82 n := make([]byte, 0) 83 for i := range node.Name { 84 if node.Name[i] != 0 { 85 n = append(n, byte(node.Name[i])) 86 } 87 } 88 if string(n) == part { 89 mib = append(mib, _C_int(node.Num)) 90 break 91 } 92 } 93 if len(mib) != partno+1 { 94 return nil, EINVAL 95 } 96 } 97 98 return mib, nil 99 } 100 101 func direntIno(buf []byte) (uint64, bool) { 102 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) 103 } 104 105 func direntReclen(buf []byte) (uint64, bool) { 106 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) 107 } 108 109 func direntNamlen(buf []byte) (uint64, bool) { 110 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) 111 } 112 113 func Pipe(p []int) (err error) { 114 return Pipe2(p, 0) 115 } 116 117 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 118 119 func Pipe2(p []int, flags int) error { 120 if len(p) != 2 { 121 return EINVAL 122 } 123 var pp [2]_C_int 124 err := pipe2(&pp, flags) 125 if err == nil { 126 p[0] = int(pp[0]) 127 p[1] = int(pp[1]) 128 } 129 return err 130 } 131 132 //sys paccept(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, sigmask *sigset, flags int) (nfd int, err error) 133 134 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 135 var rsa RawSockaddrAny 136 var len _Socklen = SizeofSockaddrAny 137 nfd, err = paccept(fd, &rsa, &len, nil, flags) 138 if err != nil { 139 return 140 } 141 if len > SizeofSockaddrAny { 142 panic("RawSockaddrAny too small") 143 } 144 sa, err = anyToSockaddr(&rsa) 145 if err != nil { 146 Close(nfd) 147 nfd = 0 148 } 149 return 150 } 151 152 //sys getdents(fd int, buf []byte) (n int, err error) 153 154 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) { 155 return getdents(fd, buf) 156 } 157 158 // TODO, see golang.org/issue/5847 159 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 160 return -1, ENOSYS 161 } 162 163 /* 164 * Exposed directly 165 */ 166 //sys Access(path string, mode uint32) (err error) 167 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 168 //sys Chdir(path string) (err error) 169 //sys Chflags(path string, flags int) (err error) 170 //sys Chmod(path string, mode uint32) (err error) 171 //sys Chown(path string, uid int, gid int) (err error) 172 //sys Chroot(path string) (err error) 173 //sys Close(fd int) (err error) 174 //sys Dup(fd int) (nfd int, err error) 175 //sys Dup2(from int, to int) (err error) 176 //sys Fchdir(fd int) (err error) 177 //sys Fchflags(fd int, flags int) (err error) 178 //sys Fchmod(fd int, mode uint32) (err error) 179 //sys Fchown(fd int, uid int, gid int) (err error) 180 //sys Flock(fd int, how int) (err error) 181 //sys Fpathconf(fd int, name int) (val int, err error) 182 //sys Fstat(fd int, stat *Stat_t) (err error) 183 //sys Fsync(fd int) (err error) 184 //sys Ftruncate(fd int, length int64) (err error) 185 //sysnb Getegid() (egid int) 186 //sysnb Geteuid() (uid int) 187 //sysnb Getgid() (gid int) 188 //sysnb Getpgid(pid int) (pgid int, err error) 189 //sysnb Getpgrp() (pgrp int) 190 //sysnb Getpid() (pid int) 191 //sysnb Getppid() (ppid int) 192 //sys Getpriority(which int, who int) (prio int, err error) 193 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 194 //sysnb Getrusage(who int, rusage *Rusage) (err error) 195 //sysnb Getsid(pid int) (sid int, err error) 196 //sysnb Gettimeofday(tv *Timeval) (err error) 197 //sysnb Getuid() (uid int) 198 //sys Issetugid() (tainted bool) 199 //sys Kill(pid int, signum Signal) (err error) 200 //sys Kqueue() (fd int, err error) 201 //sys Lchown(path string, uid int, gid int) (err error) 202 //sys Link(path string, link string) (err error) 203 //sys Listen(s int, backlog int) (err error) 204 //sys Lstat(path string, stat *Stat_t) (err error) 205 //sys Mkdir(path string, mode uint32) (err error) 206 //sys Mkfifo(path string, mode uint32) (err error) 207 //sys Mknod(path string, mode uint32, dev int) (err error) 208 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 209 //sys Open(path string, mode int, perm uint32) (fd int, err error) 210 //sys Pathconf(path string, name int) (val int, err error) 211 //sys pread(fd int, p []byte, offset int64) (n int, err error) 212 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) 213 //sys read(fd int, p []byte) (n int, err error) 214 //sys Readlink(path string, buf []byte) (n int, err error) 215 //sys Rename(from string, to string) (err error) 216 //sys Revoke(path string) (err error) 217 //sys Rmdir(path string) (err error) 218 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 219 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 220 //sysnb Setegid(egid int) (err error) 221 //sysnb Seteuid(euid int) (err error) 222 //sysnb Setgid(gid int) (err error) 223 //sysnb Setpgid(pid int, pgid int) (err error) 224 //sys Setpriority(which int, who int, prio int) (err error) 225 //sysnb Setregid(rgid int, egid int) (err error) 226 //sysnb Setreuid(ruid int, euid int) (err error) 227 //sysnb setrlimit(which int, lim *Rlimit) (err error) 228 //sysnb Setsid() (pid int, err error) 229 //sysnb Settimeofday(tp *Timeval) (err error) 230 //sysnb Setuid(uid int) (err error) 231 //sys Stat(path string, stat *Stat_t) (err error) 232 //sys Symlink(path string, link string) (err error) 233 //sys Sync() (err error) 234 //sys Truncate(path string, length int64) (err error) 235 //sys Umask(newmask int) (oldmask int) 236 //sys Unlink(path string) (err error) 237 //sys Unmount(path string, flags int) (err error) 238 //sys write(fd int, p []byte) (n int, err error) 239 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 240 //sys munmap(addr uintptr, length uintptr) (err error) 241 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 242 //sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error) 243 //sys getcwd(buf []byte) (n int, err error) = SYS___GETCWD 244 //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL 245