syscall_linux_arm.go (7076B)
1 // Copyright 2009 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 arm && linux 6 7 package unix 8 9 import ( 10 "unsafe" 11 ) 12 13 func setTimespec(sec, nsec int64) Timespec { 14 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} 15 } 16 17 func setTimeval(sec, usec int64) Timeval { 18 return Timeval{Sec: int32(sec), Usec: int32(usec)} 19 } 20 21 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { 22 newoffset, errno := seek(fd, offset, whence) 23 if errno != 0 { 24 return 0, errno 25 } 26 return newoffset, nil 27 } 28 29 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 30 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 31 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 32 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 33 //sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 34 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 35 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 36 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 37 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 38 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 39 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 40 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 41 //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) 42 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 43 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 44 45 // 64-bit file system and 32-bit uid calls 46 // (16-bit uid calls are not always supported in newer kernels) 47 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 48 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 49 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 50 //sysnb Getegid() (egid int) = SYS_GETEGID32 51 //sysnb Geteuid() (euid int) = SYS_GETEUID32 52 //sysnb Getgid() (gid int) = SYS_GETGID32 53 //sysnb Getuid() (uid int) = SYS_GETUID32 54 //sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 55 //sys Listen(s int, n int) (err error) 56 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 57 //sys Pause() (err error) 58 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 59 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 60 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 61 //sys setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32 62 //sys setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32 63 //sys Shutdown(fd int, how int) (err error) 64 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 65 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 66 //sys Ustat(dev int, ubuf *Ustat_t) (err error) 67 68 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) 69 //sysnb Gettimeofday(tv *Timeval) (err error) 70 71 func Time(t *Time_t) (Time_t, error) { 72 var tv Timeval 73 err := Gettimeofday(&tv) 74 if err != nil { 75 return 0, err 76 } 77 if t != nil { 78 *t = Time_t(tv.Sec) 79 } 80 return Time_t(tv.Sec), nil 81 } 82 83 func Utime(path string, buf *Utimbuf) error { 84 if buf == nil { 85 return Utimes(path, nil) 86 } 87 tv := []Timeval{ 88 {Sec: buf.Actime}, 89 {Sec: buf.Modtime}, 90 } 91 return Utimes(path, tv) 92 } 93 94 //sys utimes(path string, times *[2]Timeval) (err error) 95 96 //sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 97 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 98 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 99 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 100 101 func Fadvise(fd int, offset int64, length int64, advice int) (err error) { 102 _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32)) 103 if e1 != 0 { 104 err = errnoErr(e1) 105 } 106 return 107 } 108 109 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 110 111 func Fstatfs(fd int, buf *Statfs_t) (err error) { 112 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 113 if e != 0 { 114 err = e 115 } 116 return 117 } 118 119 func Statfs(path string, buf *Statfs_t) (err error) { 120 pathp, err := BytePtrFromString(path) 121 if err != nil { 122 return err 123 } 124 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 125 if e != 0 { 126 err = e 127 } 128 return 129 } 130 131 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 132 page := uintptr(offset / 4096) 133 if offset != int64(page)*4096 { 134 return 0, EINVAL 135 } 136 return mmap2(addr, length, prot, flags, fd, page) 137 } 138 139 type rlimit32 struct { 140 Cur uint32 141 Max uint32 142 } 143 144 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT 145 146 const rlimInf32 = ^uint32(0) 147 const rlimInf64 = ^uint64(0) 148 149 func Getrlimit(resource int, rlim *Rlimit) (err error) { 150 err = Prlimit(0, resource, nil, rlim) 151 if err != ENOSYS { 152 return err 153 } 154 155 rl := rlimit32{} 156 err = getrlimit(resource, &rl) 157 if err != nil { 158 return 159 } 160 161 if rl.Cur == rlimInf32 { 162 rlim.Cur = rlimInf64 163 } else { 164 rlim.Cur = uint64(rl.Cur) 165 } 166 167 if rl.Max == rlimInf32 { 168 rlim.Max = rlimInf64 169 } else { 170 rlim.Max = uint64(rl.Max) 171 } 172 return 173 } 174 175 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } 176 177 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } 178 179 func (iov *Iovec) SetLen(length int) { 180 iov.Len = uint32(length) 181 } 182 183 func (msghdr *Msghdr) SetControllen(length int) { 184 msghdr.Controllen = uint32(length) 185 } 186 187 func (msghdr *Msghdr) SetIovlen(length int) { 188 msghdr.Iovlen = uint32(length) 189 } 190 191 func (cmsg *Cmsghdr) SetLen(length int) { 192 cmsg.Len = uint32(length) 193 } 194 195 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { 196 rsa.Service_name_len = uint32(length) 197 } 198 199 //sys armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE 200 201 func SyncFileRange(fd int, off int64, n int64, flags int) error { 202 // The sync_file_range and arm_sync_file_range syscalls differ only in the 203 // order of their arguments. 204 return armSyncFileRange(fd, flags, off, n) 205 } 206 207 //sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) 208 209 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { 210 cmdlineLen := len(cmdline) 211 if cmdlineLen > 0 { 212 // Account for the additional NULL byte added by 213 // BytePtrFromString in kexecFileLoad. The kexec_file_load 214 // syscall expects a NULL-terminated string. 215 cmdlineLen++ 216 } 217 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) 218 }