github.com/binkynet/BinkyNet@v1.12.1-0.20240421190447-da4e34c20be0/proto_vendor/golang.org/x/sys/unix/syscall_linux_arm.go (about)

     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  // +build arm,linux
     6  
     7  package unix
     8  
     9  import (
    10  	"syscall"
    11  	"unsafe"
    12  )
    13  
    14  func setTimespec(sec, nsec int64) Timespec {
    15  	return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
    16  }
    17  
    18  func setTimeval(sec, usec int64) Timeval {
    19  	return Timeval{Sec: int32(sec), Usec: int32(usec)}
    20  }
    21  
    22  //sysnb	pipe(p *[2]_C_int) (err error)
    23  
    24  func Pipe(p []int) (err error) {
    25  	if len(p) != 2 {
    26  		return EINVAL
    27  	}
    28  	var pp [2]_C_int
    29  	// Try pipe2 first for Android O, then try pipe for kernel 2.6.23.
    30  	err = pipe2(&pp, 0)
    31  	if err == ENOSYS {
    32  		err = pipe(&pp)
    33  	}
    34  	p[0] = int(pp[0])
    35  	p[1] = int(pp[1])
    36  	return
    37  }
    38  
    39  //sysnb pipe2(p *[2]_C_int, flags int) (err error)
    40  
    41  func Pipe2(p []int, flags int) (err error) {
    42  	if len(p) != 2 {
    43  		return EINVAL
    44  	}
    45  	var pp [2]_C_int
    46  	err = pipe2(&pp, flags)
    47  	p[0] = int(pp[0])
    48  	p[1] = int(pp[1])
    49  	return
    50  }
    51  
    52  // Underlying system call writes to newoffset via pointer.
    53  // Implemented in assembly to avoid allocation.
    54  func seek(fd int, offset int64, whence int) (newoffset int64, err syscall.Errno)
    55  
    56  func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
    57  	newoffset, errno := seek(fd, offset, whence)
    58  	if errno != 0 {
    59  		return 0, errno
    60  	}
    61  	return newoffset, nil
    62  }
    63  
    64  //sys	accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
    65  //sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
    66  //sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
    67  //sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
    68  //sysnb	getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
    69  //sysnb	setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
    70  //sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
    71  //sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
    72  //sysnb	socket(domain int, typ int, proto int) (fd int, err error)
    73  //sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
    74  //sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
    75  //sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
    76  //sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
    77  //sysnb	socketpair(domain int, typ int, flags int, fd *[2]int32) (err error)
    78  //sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
    79  //sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
    80  
    81  // 64-bit file system and 32-bit uid calls
    82  // (16-bit uid calls are not always supported in newer kernels)
    83  //sys	Dup2(oldfd int, newfd int) (err error)
    84  //sysnb	EpollCreate(size int) (fd int, err error)
    85  //sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
    86  //sys	Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32
    87  //sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
    88  //sys	Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
    89  //sysnb	Getegid() (egid int) = SYS_GETEGID32
    90  //sysnb	Geteuid() (euid int) = SYS_GETEUID32
    91  //sysnb	Getgid() (gid int) = SYS_GETGID32
    92  //sysnb	Getuid() (uid int) = SYS_GETUID32
    93  //sysnb	InotifyInit() (fd int, err error)
    94  //sys	Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32
    95  //sys	Listen(s int, n int) (err error)
    96  //sys	Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
    97  //sys	Pause() (err error)
    98  //sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
    99  //sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
   100  //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
   101  //sys	Setfsgid(gid int) (err error) = SYS_SETFSGID32
   102  //sys	Setfsuid(uid int) (err error) = SYS_SETFSUID32
   103  //sysnb	Setregid(rgid int, egid int) (err error) = SYS_SETREGID32
   104  //sysnb	Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32
   105  //sysnb	Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32
   106  //sysnb	Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32
   107  //sys	Shutdown(fd int, how int) (err error)
   108  //sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
   109  //sys	Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
   110  //sys	Ustat(dev int, ubuf *Ustat_t) (err error)
   111  
   112  //sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)
   113  //sysnb	Gettimeofday(tv *Timeval) (err error)
   114  
   115  func Time(t *Time_t) (Time_t, error) {
   116  	var tv Timeval
   117  	err := Gettimeofday(&tv)
   118  	if err != nil {
   119  		return 0, err
   120  	}
   121  	if t != nil {
   122  		*t = Time_t(tv.Sec)
   123  	}
   124  	return Time_t(tv.Sec), nil
   125  }
   126  
   127  func Utime(path string, buf *Utimbuf) error {
   128  	tv := []Timeval{
   129  		{Sec: buf.Actime},
   130  		{Sec: buf.Modtime},
   131  	}
   132  	return Utimes(path, tv)
   133  }
   134  
   135  //sys	utimes(path string, times *[2]Timeval) (err error)
   136  
   137  //sys   Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
   138  //sys   Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
   139  //sys	Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
   140  //sys	Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
   141  
   142  func Fadvise(fd int, offset int64, length int64, advice int) (err error) {
   143  	_, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32))
   144  	if e1 != 0 {
   145  		err = errnoErr(e1)
   146  	}
   147  	return
   148  }
   149  
   150  //sys	mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
   151  
   152  func Fstatfs(fd int, buf *Statfs_t) (err error) {
   153  	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
   154  	if e != 0 {
   155  		err = e
   156  	}
   157  	return
   158  }
   159  
   160  func Statfs(path string, buf *Statfs_t) (err error) {
   161  	pathp, err := BytePtrFromString(path)
   162  	if err != nil {
   163  		return err
   164  	}
   165  	_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
   166  	if e != 0 {
   167  		err = e
   168  	}
   169  	return
   170  }
   171  
   172  func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
   173  	page := uintptr(offset / 4096)
   174  	if offset != int64(page)*4096 {
   175  		return 0, EINVAL
   176  	}
   177  	return mmap2(addr, length, prot, flags, fd, page)
   178  }
   179  
   180  type rlimit32 struct {
   181  	Cur uint32
   182  	Max uint32
   183  }
   184  
   185  //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT
   186  
   187  const rlimInf32 = ^uint32(0)
   188  const rlimInf64 = ^uint64(0)
   189  
   190  func Getrlimit(resource int, rlim *Rlimit) (err error) {
   191  	err = prlimit(0, resource, nil, rlim)
   192  	if err != ENOSYS {
   193  		return err
   194  	}
   195  
   196  	rl := rlimit32{}
   197  	err = getrlimit(resource, &rl)
   198  	if err != nil {
   199  		return
   200  	}
   201  
   202  	if rl.Cur == rlimInf32 {
   203  		rlim.Cur = rlimInf64
   204  	} else {
   205  		rlim.Cur = uint64(rl.Cur)
   206  	}
   207  
   208  	if rl.Max == rlimInf32 {
   209  		rlim.Max = rlimInf64
   210  	} else {
   211  		rlim.Max = uint64(rl.Max)
   212  	}
   213  	return
   214  }
   215  
   216  //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
   217  
   218  func Setrlimit(resource int, rlim *Rlimit) (err error) {
   219  	err = prlimit(0, resource, rlim, nil)
   220  	if err != ENOSYS {
   221  		return err
   222  	}
   223  
   224  	rl := rlimit32{}
   225  	if rlim.Cur == rlimInf64 {
   226  		rl.Cur = rlimInf32
   227  	} else if rlim.Cur < uint64(rlimInf32) {
   228  		rl.Cur = uint32(rlim.Cur)
   229  	} else {
   230  		return EINVAL
   231  	}
   232  	if rlim.Max == rlimInf64 {
   233  		rl.Max = rlimInf32
   234  	} else if rlim.Max < uint64(rlimInf32) {
   235  		rl.Max = uint32(rlim.Max)
   236  	} else {
   237  		return EINVAL
   238  	}
   239  
   240  	return setrlimit(resource, &rl)
   241  }
   242  
   243  func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) }
   244  
   245  func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) }
   246  
   247  func (iov *Iovec) SetLen(length int) {
   248  	iov.Len = uint32(length)
   249  }
   250  
   251  func (msghdr *Msghdr) SetControllen(length int) {
   252  	msghdr.Controllen = uint32(length)
   253  }
   254  
   255  func (msghdr *Msghdr) SetIovlen(length int) {
   256  	msghdr.Iovlen = uint32(length)
   257  }
   258  
   259  func (cmsg *Cmsghdr) SetLen(length int) {
   260  	cmsg.Len = uint32(length)
   261  }
   262  
   263  //sys	poll(fds *PollFd, nfds int, timeout int) (n int, err error)
   264  
   265  func Poll(fds []PollFd, timeout int) (n int, err error) {
   266  	if len(fds) == 0 {
   267  		return poll(nil, 0, timeout)
   268  	}
   269  	return poll(&fds[0], len(fds), timeout)
   270  }
   271  
   272  //sys	armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE
   273  
   274  func SyncFileRange(fd int, off int64, n int64, flags int) error {
   275  	// The sync_file_range and arm_sync_file_range syscalls differ only in the
   276  	// order of their arguments.
   277  	return armSyncFileRange(fd, flags, off, n)
   278  }
   279  
   280  //sys	kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
   281  
   282  func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
   283  	cmdlineLen := len(cmdline)
   284  	if cmdlineLen > 0 {
   285  		// Account for the additional NULL byte added by
   286  		// BytePtrFromString in kexecFileLoad. The kexec_file_load
   287  		// syscall expects a NULL-terminated string.
   288  		cmdlineLen++
   289  	}
   290  	return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
   291  }