github.com/nibnait/go-learn@v0.0.0-20220227013611-dfa47ea6d2da/src/pkg/mod/golang.org/x/sys@v0.0.0-20210630005230-0f9fa26af87c/unix/syscall_linux_ppc.go (about) 1 // Copyright 2021 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 //go:build linux && ppc 6 // +build linux 7 // +build ppc 8 9 package unix 10 11 import ( 12 "syscall" 13 "unsafe" 14 ) 15 16 //sys dup2(oldfd int, newfd int) (err error) 17 //sysnb EpollCreate(size int) (fd int, err error) 18 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 19 //sys Fchown(fd int, uid int, gid int) (err error) 20 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 21 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 22 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 23 //sysnb Getegid() (egid int) 24 //sysnb Geteuid() (euid int) 25 //sysnb Getgid() (gid int) 26 //sysnb Getuid() (uid int) 27 //sysnb InotifyInit() (fd int, err error) 28 //sys Ioperm(from int, num int, on int) (err error) 29 //sys Iopl(level int) (err error) 30 //sys Lchown(path string, uid int, gid int) (err error) 31 //sys Listen(s int, n int) (err error) 32 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 33 //sys Pause() (err error) 34 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 35 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 36 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 37 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 38 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 39 //sys setfsgid(gid int) (prev int, err error) 40 //sys setfsuid(uid int) (prev int, err error) 41 //sysnb Setregid(rgid int, egid int) (err error) 42 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) 43 //sysnb Setresuid(ruid int, euid int, suid int) (err error) 44 //sysnb Setreuid(ruid int, euid int) (err error) 45 //sys Shutdown(fd int, how int) (err error) 46 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 47 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 48 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 49 //sys Ustat(dev int, ubuf *Ustat_t) (err error) 50 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) 51 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 52 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 53 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 54 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 55 //sysnb setgroups(n int, list *_Gid_t) (err error) 56 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 57 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 58 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 59 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) 60 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 61 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 62 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 63 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 64 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 65 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 66 67 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) 68 //sysnb Gettimeofday(tv *Timeval) (err error) 69 //sysnb Time(t *Time_t) (tt Time_t, err error) 70 //sys Utime(path string, buf *Utimbuf) (err error) 71 //sys utimes(path string, times *[2]Timeval) (err error) 72 73 func Fadvise(fd int, offset int64, length int64, advice int) (err error) { 74 _, _, e1 := Syscall6(SYS_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset>>32), uintptr(offset), uintptr(length>>32), uintptr(length)) 75 if e1 != 0 { 76 err = errnoErr(e1) 77 } 78 return 79 } 80 81 func seek(fd int, offset int64, whence int) (int64, syscall.Errno) { 82 var newoffset int64 83 offsetLow := uint32(offset & 0xffffffff) 84 offsetHigh := uint32((offset >> 32) & 0xffffffff) 85 _, _, err := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offsetHigh), uintptr(offsetLow), uintptr(unsafe.Pointer(&newoffset)), uintptr(whence), 0) 86 return newoffset, err 87 } 88 89 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { 90 newoffset, errno := seek(fd, offset, whence) 91 if errno != 0 { 92 return 0, errno 93 } 94 return newoffset, nil 95 } 96 97 func Fstatfs(fd int, buf *Statfs_t) (err error) { 98 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 99 if e != 0 { 100 err = e 101 } 102 return 103 } 104 105 func Statfs(path string, buf *Statfs_t) (err error) { 106 pathp, err := BytePtrFromString(path) 107 if err != nil { 108 return err 109 } 110 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 111 if e != 0 { 112 err = e 113 } 114 return 115 } 116 117 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 118 119 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 120 page := uintptr(offset / 4096) 121 if offset != int64(page)*4096 { 122 return 0, EINVAL 123 } 124 return mmap2(addr, length, prot, flags, fd, page) 125 } 126 127 func setTimespec(sec, nsec int64) Timespec { 128 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} 129 } 130 131 func setTimeval(sec, usec int64) Timeval { 132 return Timeval{Sec: int32(sec), Usec: int32(usec)} 133 } 134 135 type rlimit32 struct { 136 Cur uint32 137 Max uint32 138 } 139 140 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT 141 142 const rlimInf32 = ^uint32(0) 143 const rlimInf64 = ^uint64(0) 144 145 func Getrlimit(resource int, rlim *Rlimit) (err error) { 146 err = prlimit(0, resource, nil, rlim) 147 if err != ENOSYS { 148 return err 149 } 150 151 rl := rlimit32{} 152 err = getrlimit(resource, &rl) 153 if err != nil { 154 return 155 } 156 157 if rl.Cur == rlimInf32 { 158 rlim.Cur = rlimInf64 159 } else { 160 rlim.Cur = uint64(rl.Cur) 161 } 162 163 if rl.Max == rlimInf32 { 164 rlim.Max = rlimInf64 165 } else { 166 rlim.Max = uint64(rl.Max) 167 } 168 return 169 } 170 171 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT 172 173 func Setrlimit(resource int, rlim *Rlimit) (err error) { 174 err = prlimit(0, resource, rlim, nil) 175 if err != ENOSYS { 176 return err 177 } 178 179 rl := rlimit32{} 180 if rlim.Cur == rlimInf64 { 181 rl.Cur = rlimInf32 182 } else if rlim.Cur < uint64(rlimInf32) { 183 rl.Cur = uint32(rlim.Cur) 184 } else { 185 return EINVAL 186 } 187 if rlim.Max == rlimInf64 { 188 rl.Max = rlimInf32 189 } else if rlim.Max < uint64(rlimInf32) { 190 rl.Max = uint32(rlim.Max) 191 } else { 192 return EINVAL 193 } 194 195 return setrlimit(resource, &rl) 196 } 197 198 func (r *PtraceRegs) PC() uint32 { return r.Nip } 199 200 func (r *PtraceRegs) SetPC(pc uint32) { r.Nip = pc } 201 202 func (iov *Iovec) SetLen(length int) { 203 iov.Len = uint32(length) 204 } 205 206 func (msghdr *Msghdr) SetControllen(length int) { 207 msghdr.Controllen = uint32(length) 208 } 209 210 func (msghdr *Msghdr) SetIovlen(length int) { 211 msghdr.Iovlen = uint32(length) 212 } 213 214 func (cmsg *Cmsghdr) SetLen(length int) { 215 cmsg.Len = uint32(length) 216 } 217 218 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { 219 rsa.Service_name_len = uint32(length) 220 } 221 222 //sysnb pipe(p *[2]_C_int) (err error) 223 224 func Pipe(p []int) (err error) { 225 if len(p) != 2 { 226 return EINVAL 227 } 228 var pp [2]_C_int 229 err = pipe(&pp) 230 p[0] = int(pp[0]) 231 p[1] = int(pp[1]) 232 return 233 } 234 235 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 236 237 func Pipe2(p []int, flags int) (err error) { 238 if len(p) != 2 { 239 return EINVAL 240 } 241 var pp [2]_C_int 242 err = pipe2(&pp, flags) 243 p[0] = int(pp[0]) 244 p[1] = int(pp[1]) 245 return 246 } 247 248 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 249 250 func Poll(fds []PollFd, timeout int) (n int, err error) { 251 if len(fds) == 0 { 252 return poll(nil, 0, timeout) 253 } 254 return poll(&fds[0], len(fds), timeout) 255 } 256 257 //sys syncFileRange2(fd int, flags int, off int64, n int64) (err error) = SYS_SYNC_FILE_RANGE2 258 259 func SyncFileRange(fd int, off int64, n int64, flags int) error { 260 // The sync_file_range and sync_file_range2 syscalls differ only in the 261 // order of their arguments. 262 return syncFileRange2(fd, flags, off, n) 263 } 264 265 //sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) 266 267 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { 268 cmdlineLen := len(cmdline) 269 if cmdlineLen > 0 { 270 // Account for the additional NULL byte added by 271 // BytePtrFromString in kexecFileLoad. The kexec_file_load 272 // syscall expects a NULL-terminated string. 273 cmdlineLen++ 274 } 275 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) 276 }