Source file src/syscall/syscall_linux_arm.go
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 package syscall 6 7 import "unsafe" 8 9 const ( 10 _SYS_setgroups = SYS_SETGROUPS32 11 _SYS_clone3 = 435 12 _SYS_faccessat2 = 439 13 _SYS_fchmodat2 = 452 14 ) 15 16 func setTimespec(sec, nsec int64) Timespec { 17 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} 18 } 19 20 func setTimeval(sec, usec int64) Timeval { 21 return Timeval{Sec: int32(sec), Usec: int32(usec)} 22 } 23 24 // Underlying system call writes to newoffset via pointer. 25 // Implemented in assembly to avoid allocation. 26 // 27 // Accessed via assembly in x/sys/unix. 28 // 29 //go:linkname seek 30 func seek(fd int, offset int64, whence int) (newoffset int64, err Errno) 31 32 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { 33 newoffset, errno := seek(fd, offset, whence) 34 if errno != 0 { 35 return 0, errno 36 } 37 return newoffset, nil 38 } 39 40 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 41 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 42 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 43 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 44 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 45 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 46 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 47 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 48 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 49 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 50 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 51 //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) 52 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 53 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 54 55 // 64-bit file system and 32-bit uid calls 56 // (16-bit uid calls are not always supported in newer kernels) 57 //sys Dup2(oldfd int, newfd int) (err error) 58 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 59 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 60 //sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 61 //sysnb Getegid() (egid int) = SYS_GETEGID32 62 //sysnb Geteuid() (euid int) = SYS_GETEUID32 63 //sysnb Getgid() (gid int) = SYS_GETGID32 64 //sysnb Getuid() (uid int) = SYS_GETUID32 65 //sysnb InotifyInit() (fd int, err error) 66 //sys Listen(s int, n int) (err error) 67 //sys Pause() (err error) 68 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 69 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 70 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 71 //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32 72 //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32 73 //sys Shutdown(fd int, how int) (err error) 74 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 75 //sys Ustat(dev int, ubuf *Ustat_t) (err error) 76 77 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) 78 //sysnb Gettimeofday(tv *Timeval) (err error) 79 //sysnb Time(t *Time_t) (tt Time_t, err error) 80 //sys Utime(path string, buf *Utimbuf) (err error) 81 //sys utimes(path string, times *[2]Timeval) (err error) 82 83 //sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 84 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 85 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 86 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 87 88 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 89 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 90 91 func Stat(path string, stat *Stat_t) (err error) { 92 return fstatat(_AT_FDCWD, path, stat, 0) 93 } 94 95 func Lchown(path string, uid int, gid int) (err error) { 96 return Fchownat(_AT_FDCWD, path, uid, gid, _AT_SYMLINK_NOFOLLOW) 97 } 98 99 func Lstat(path string, stat *Stat_t) (err error) { 100 return fstatat(_AT_FDCWD, path, stat, _AT_SYMLINK_NOFOLLOW) 101 } 102 103 func Fstatfs(fd int, buf *Statfs_t) (err error) { 104 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 105 if e != 0 { 106 err = e 107 } 108 return 109 } 110 111 func Statfs(path string, buf *Statfs_t) (err error) { 112 pathp, err := BytePtrFromString(path) 113 if err != nil { 114 return err 115 } 116 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 117 if e != 0 { 118 err = e 119 } 120 return 121 } 122 123 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 124 page := uintptr(offset / 4096) 125 if offset != int64(page)*4096 { 126 return 0, EINVAL 127 } 128 return mmap2(addr, length, prot, flags, fd, page) 129 } 130 131 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } 132 133 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } 134 135 func (iov *Iovec) SetLen(length int) { 136 iov.Len = uint32(length) 137 } 138 139 func (msghdr *Msghdr) SetControllen(length int) { 140 msghdr.Controllen = uint32(length) 141 } 142 143 func (cmsg *Cmsghdr) SetLen(length int) { 144 cmsg.Len = uint32(length) 145 } 146