91 lines
2.9 KiB
Go
91 lines
2.9 KiB
Go
// Copyright 2024 The Libc Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package libc // import "modernc.org/libc"
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import (
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"unsafe"
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"golang.org/x/sys/unix"
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)
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func Xpread(tls *TLS, fd int32, buf uintptr, size Tsize_t, ofs Toff_t) (r Tssize_t) {
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if __ccgo_strace {
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trc("tls=%v fd=%v buf=%v size=%v ofs=%v, (%v:)", tls, fd, buf, size, ofs, origin(2))
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defer func() { trc("-> %v", r) }()
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}
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n, err := unix.Pread(int(fd), unsafe.Slice((*byte)(unsafe.Pointer(buf)), size), ofs)
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if err != nil {
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*(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(err.(unix.Errno))
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return -1
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}
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return Tssize_t(n)
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}
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func Xpwrite(tls *TLS, fd int32, buf uintptr, size Tsize_t, ofs Toff_t) (r Tssize_t) {
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if __ccgo_strace {
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trc("tls=%v fd=%v buf=%v size=%v ofs=%v, (%v:)", tls, fd, buf, size, ofs, origin(2))
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defer func() { trc("-> %v", r) }()
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}
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n, err := unix.Pwrite(int(fd), unsafe.Slice((*byte)(unsafe.Pointer(buf)), size), ofs)
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if err != nil {
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*(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(err.(unix.Errno))
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return -1
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}
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return Tssize_t(n)
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}
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func Xftruncate(tls *TLS, fd int32, length Toff_t) (r int32) {
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if __ccgo_strace {
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trc("tls=%v fd=%v length=%v, (%v:)", tls, fd, length, origin(2))
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defer func() { trc("-> %v", r) }()
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}
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//return X__syscall_ret(tls, uint32(X__syscall2(tls, int32(SYS_ftruncate64), fd, int32(length))))
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if err := unix.Ftruncate(int(fd), length); err != nil {
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*(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(err.(unix.Errno))
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return -1
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}
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return 0
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}
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func _read(tls *TLS, fd int32, buf uintptr, count Tsize_t) (r Tssize_t) {
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return Xread(tls, fd, buf, count)
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}
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func Xread(tls *TLS, fd int32, buf uintptr, count Tsize_t) (r Tssize_t) {
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if __ccgo_strace {
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trc("tls=%v fd=%v buf=%v count=%v, (%v:)", tls, fd, buf, count, origin(2))
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defer func() { trc("-> %v", r) }()
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}
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// return X__syscall_ret(tls, uint32(___syscall_cp(tls, int32(SYS_read), fd, int32(buf), int32(count), 0, 0, 0)))
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n, err := unix.Read(int(fd), unsafe.Slice((*byte)(unsafe.Pointer(buf)), count))
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if err != nil {
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*(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(err.(unix.Errno))
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return -1
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}
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return Tssize_t(n)
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}
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func _write(tls *TLS, fd int32, buf uintptr, count Tsize_t) (r Tssize_t) {
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return Xwrite(tls, fd, buf, count)
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}
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func Xwrite(tls *TLS, fd int32, buf uintptr, count Tsize_t) (r Tssize_t) {
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if __ccgo_strace {
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trc("tls=%v fd=%v buf=%v count=%v, (%v:)", tls, fd, buf, count, origin(2))
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defer func() { trc("-> %v", r) }()
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}
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// return X__syscall_ret(tls, uint32(___syscall_cp(tls, int32(SYS_write), fd, int32(buf), int32(count), 0, 0, 0)))
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n, err := unix.Write(int(fd), unsafe.Slice((*byte)(unsafe.Pointer(buf)), count))
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if err != nil {
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*(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(err.(unix.Errno))
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return -1
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}
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return Tssize_t(n)
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}
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