mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2025-10-31 03:42:25 -05:00
488 lines
12 KiB
Go
488 lines
12 KiB
Go
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// Copyright 2020 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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"os"
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"strings"
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"unicode"
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"unsafe"
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"golang.org/x/sys/unix"
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"modernc.org/libc/errno"
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"modernc.org/libc/fcntl"
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"modernc.org/libc/signal"
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"modernc.org/libc/sys/types"
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"modernc.org/libc/wctype"
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)
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// int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
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func Xsigaction(t *TLS, signum int32, act, oldact uintptr) int32 {
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// musl/arch/x86_64/ksigaction.h
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//
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// struct k_sigaction {
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// void (*handler)(int);
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// unsigned long flags;
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// void (*restorer)(void);
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// unsigned mask[2];
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// };
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type k_sigaction struct {
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handler uintptr
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flags ulong
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restorer uintptr
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mask [2]uint32
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}
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var kact, koldact uintptr
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if act != 0 {
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sz := int(unsafe.Sizeof(k_sigaction{}))
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kact = t.Alloc(sz)
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defer t.Free(sz)
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*(*k_sigaction)(unsafe.Pointer(kact)) = k_sigaction{
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handler: (*signal.Sigaction)(unsafe.Pointer(act)).F__sigaction_handler.Fsa_handler,
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flags: ulong((*signal.Sigaction)(unsafe.Pointer(act)).Fsa_flags),
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restorer: (*signal.Sigaction)(unsafe.Pointer(act)).Fsa_restorer,
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}
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Xmemcpy(t, kact+unsafe.Offsetof(k_sigaction{}.mask), act+unsafe.Offsetof(signal.Sigaction{}.Fsa_mask), types.Size_t(unsafe.Sizeof(k_sigaction{}.mask)))
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}
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if oldact != 0 {
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panic(todo(""))
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}
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if _, _, err := unix.Syscall6(unix.SYS_RT_SIGACTION, uintptr(signum), kact, koldact, unsafe.Sizeof(k_sigaction{}.mask), 0, 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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if oldact != 0 {
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panic(todo(""))
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}
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return 0
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}
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// int fcntl(int fd, int cmd, ... /* arg */ );
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func Xfcntl64(t *TLS, fd, cmd int32, args uintptr) int32 {
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var arg uintptr
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if args != 0 {
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arg = *(*uintptr)(unsafe.Pointer(args))
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}
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switch cmd {
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case unix.F_GETLK64: // 0xc
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cmd = unix.F_GETLK // 0x5
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case unix.F_SETLK64: // 0xd
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cmd = unix.F_SETLK // 0x6
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case unix.F_SETLKW64: // 0xe
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cmd = unix.F_SETLKW // 0x7
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}
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if cmd == fcntl.F_SETFL {
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arg |= unix.O_LARGEFILE
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}
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n, _, err := unix.Syscall(unix.SYS_FCNTL, uintptr(fd), uintptr(cmd), arg)
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if err != 0 {
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// if dmesgs {
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// dmesg("%v: fd %v cmd %v", origin(1), fcntlCmdStr(fd), cmd)
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// }
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %d %s %#x: %d", origin(1), fd, fcntlCmdStr(cmd), arg, n)
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// }
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return int32(n)
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}
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// int lstat(const char *pathname, struct stat *statbuf);
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func Xlstat64(t *TLS, pathname, statbuf uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_LSTAT, pathname, statbuf, 0); err != 0 {
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// if dmesgs {
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// dmesg("%v: %q: %v", origin(1), GoString(pathname), err)
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// }
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q: ok", origin(1), GoString(pathname))
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// }
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return 0
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}
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// int stat(const char *pathname, struct stat *statbuf);
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func Xstat64(t *TLS, pathname, statbuf uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_STAT, pathname, statbuf, 0); err != 0 {
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// if dmesgs {
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// dmesg("%v: %q: %v", origin(1), GoString(pathname), err)
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// }
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q: ok", origin(1), GoString(pathname))
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// }
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return 0
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}
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// int fstat(int fd, struct stat *statbuf);
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func Xfstat64(t *TLS, fd int32, statbuf uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_FSTAT, uintptr(fd), statbuf, 0); err != 0 {
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// if dmesgs {
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// dmesg("%v: fd %d: %v", origin(1), fd, err)
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// }
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %d size %#x: ok\n%+v", origin(1), fd, (*stat.Stat)(unsafe.Pointer(statbuf)).Fst_size, (*stat.Stat)(unsafe.Pointer(statbuf)))
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// }
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return 0
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}
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func Xmmap(t *TLS, addr uintptr, length types.Size_t, prot, flags, fd int32, offset types.Off_t) uintptr {
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return Xmmap64(t, addr, length, prot, flags, fd, offset)
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}
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// void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
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func Xmmap64(t *TLS, addr uintptr, length types.Size_t, prot, flags, fd int32, offset types.Off_t) uintptr {
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data, _, err := unix.Syscall6(unix.SYS_MMAP, addr, uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset))
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if err != 0 {
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// if dmesgs {
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// dmesg("%v: %v", origin(1), err)
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// }
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t.setErrno(err)
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return ^uintptr(0) // (void*)-1
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}
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// if dmesgs {
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// dmesg("%v: %#x", origin(1), data)
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// }
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return data
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}
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// void *mremap(void *old_address, size_t old_size, size_t new_size, int flags, ... /* void *new_address */);
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func Xmremap(t *TLS, old_address uintptr, old_size, new_size types.Size_t, flags int32, args uintptr) uintptr {
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var arg uintptr
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if args != 0 {
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arg = *(*uintptr)(unsafe.Pointer(args))
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}
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data, _, err := unix.Syscall6(unix.SYS_MREMAP, old_address, uintptr(old_size), uintptr(new_size), uintptr(flags), arg, 0)
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if err != 0 {
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// if dmesgs {
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// dmesg("%v: %v", origin(1), err)
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// }
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t.setErrno(err)
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return ^uintptr(0) // (void*)-1
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}
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// if dmesgs {
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// dmesg("%v: %#x", origin(1), data)
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// }
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return data
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}
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// int ftruncate(int fd, off_t length);
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func Xftruncate64(t *TLS, fd int32, length types.Off_t) int32 {
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if _, _, err := unix.Syscall(unix.SYS_FTRUNCATE, uintptr(fd), uintptr(length), 0); err != 0 {
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// if dmesgs {
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// dmesg("%v: fd %d: %v", origin(1), fd, err)
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// }
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %d %#x: ok", origin(1), fd, length)
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// }
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return 0
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}
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// off64_t lseek64(int fd, off64_t offset, int whence);
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func Xlseek64(t *TLS, fd int32, offset types.Off_t, whence int32) types.Off_t {
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n, _, err := unix.Syscall(unix.SYS_LSEEK, uintptr(fd), uintptr(offset), uintptr(whence))
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if err != 0 {
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// if dmesgs {
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// dmesg("%v: fd %v, off %#x, whence %v: %v", origin(1), fd, offset, whenceStr(whence), err)
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// }
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: fd %v, off %#x, whence %v: %#x", origin(1), fd, offset, whenceStr(whence), n)
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// }
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return types.Off_t(n)
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}
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// int utime(const char *filename, const struct utimbuf *times);
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func Xutime(t *TLS, filename, times uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_UTIME, filename, times, 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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return 0
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}
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// unsigned int alarm(unsigned int seconds);
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func Xalarm(t *TLS, seconds uint32) uint32 {
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n, _, err := unix.Syscall(unix.SYS_ALARM, uintptr(seconds), 0, 0)
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if err != 0 {
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panic(todo(""))
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}
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return uint32(n)
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}
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// time_t time(time_t *tloc);
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func Xtime(t *TLS, tloc uintptr) types.Time_t {
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n, _, err := unix.Syscall(unix.SYS_TIME, tloc, 0, 0)
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if err != 0 {
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t.setErrno(err)
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return types.Time_t(-1)
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}
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if tloc != 0 {
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*(*types.Time_t)(unsafe.Pointer(tloc)) = types.Time_t(n)
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}
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return types.Time_t(n)
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}
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// int getrlimit(int resource, struct rlimit *rlim);
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func Xgetrlimit64(t *TLS, resource int32, rlim uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_GETRLIMIT, uintptr(resource), uintptr(rlim), 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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return 0
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}
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// int mkdir(const char *path, mode_t mode);
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func Xmkdir(t *TLS, path uintptr, mode types.Mode_t) int32 {
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if _, _, err := unix.Syscall(unix.SYS_MKDIR, path, uintptr(mode), 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q: ok", origin(1), GoString(path))
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// }
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return 0
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}
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// int symlink(const char *target, const char *linkpath);
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func Xsymlink(t *TLS, target, linkpath uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_SYMLINK, target, linkpath, 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q %q: ok", origin(1), GoString(target), GoString(linkpath))
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// }
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return 0
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}
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// int chmod(const char *pathname, mode_t mode)
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func Xchmod(t *TLS, pathname uintptr, mode types.Mode_t) int32 {
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if _, _, err := unix.Syscall(unix.SYS_CHMOD, pathname, uintptr(mode), 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q %#o: ok", origin(1), GoString(pathname), mode)
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// }
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return 0
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}
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// int utimes(const char *filename, const struct timeval times[2]);
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func Xutimes(t *TLS, filename, times uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_UTIMES, filename, times, 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q: ok", origin(1), GoString(filename))
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// }
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return 0
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}
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// int unlink(const char *pathname);
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func Xunlink(t *TLS, pathname uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_UNLINK, pathname, 0, 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q: ok", origin(1), GoString(pathname))
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// }
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return 0
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}
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// int access(const char *pathname, int mode);
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func Xaccess(t *TLS, pathname uintptr, mode int32) int32 {
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if _, _, err := unix.Syscall(unix.SYS_ACCESS, pathname, uintptr(mode), 0); err != 0 {
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// if dmesgs {
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// dmesg("%v: %q: %v", origin(1), GoString(pathname), err)
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// }
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q %#o: ok", origin(1), GoString(pathname), mode)
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// }
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return 0
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}
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// int rmdir(const char *pathname);
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func Xrmdir(t *TLS, pathname uintptr) int32 {
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if _, _, err := unix.Syscall(unix.SYS_RMDIR, pathname, 0, 0); err != 0 {
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t.setErrno(err)
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return -1
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}
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// if dmesgs {
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// dmesg("%v: %q: ok", origin(1), GoString(pathname))
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||
|
|
// }
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// int rename(const char *oldpath, const char *newpath);
|
||
|
|
func Xrename(t *TLS, oldpath, newpath uintptr) int32 {
|
||
|
|
if _, _, err := unix.Syscall(unix.SYS_RENAME, oldpath, newpath, 0); err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// int mknod(const char *pathname, mode_t mode, dev_t dev);
|
||
|
|
func Xmknod(t *TLS, pathname uintptr, mode types.Mode_t, dev types.Dev_t) int32 {
|
||
|
|
if _, _, err := unix.Syscall(unix.SYS_MKNOD, pathname, uintptr(mode), uintptr(dev)); err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// int chown(const char *pathname, uid_t owner, gid_t group);
|
||
|
|
func Xchown(t *TLS, pathname uintptr, owner types.Uid_t, group types.Gid_t) int32 {
|
||
|
|
if _, _, err := unix.Syscall(unix.SYS_CHOWN, pathname, uintptr(owner), uintptr(group)); err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// int link(const char *oldpath, const char *newpath);
|
||
|
|
func Xlink(t *TLS, oldpath, newpath uintptr) int32 {
|
||
|
|
if _, _, err := unix.Syscall(unix.SYS_LINK, oldpath, newpath, 0); err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// int pipe(int pipefd[2]);
|
||
|
|
func Xpipe(t *TLS, pipefd uintptr) int32 {
|
||
|
|
if _, _, err := unix.Syscall(unix.SYS_PIPE, pipefd, 0, 0); err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// int dup2(int oldfd, int newfd);
|
||
|
|
func Xdup2(t *TLS, oldfd, newfd int32) int32 {
|
||
|
|
n, _, err := unix.Syscall(unix.SYS_DUP2, uintptr(oldfd), uintptr(newfd), 0)
|
||
|
|
if err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
|
||
|
|
return int32(n)
|
||
|
|
}
|
||
|
|
|
||
|
|
// ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize);
|
||
|
|
func Xreadlink(t *TLS, path, buf uintptr, bufsize types.Size_t) types.Ssize_t {
|
||
|
|
n, _, err := unix.Syscall(unix.SYS_READLINK, path, buf, uintptr(bufsize))
|
||
|
|
if err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
|
||
|
|
return types.Ssize_t(n)
|
||
|
|
}
|
||
|
|
|
||
|
|
// FILE *fopen64(const char *pathname, const char *mode);
|
||
|
|
func Xfopen64(t *TLS, pathname, mode uintptr) uintptr {
|
||
|
|
m := strings.ReplaceAll(GoString(mode), "b", "")
|
||
|
|
var flags int
|
||
|
|
switch m {
|
||
|
|
case "r":
|
||
|
|
flags = os.O_RDONLY
|
||
|
|
case "r+":
|
||
|
|
flags = os.O_RDWR
|
||
|
|
case "w":
|
||
|
|
flags = os.O_WRONLY | os.O_CREATE | os.O_TRUNC
|
||
|
|
case "w+":
|
||
|
|
flags = os.O_RDWR | os.O_CREATE | os.O_TRUNC
|
||
|
|
case "a":
|
||
|
|
flags = os.O_WRONLY | os.O_CREATE | os.O_APPEND
|
||
|
|
case "a+":
|
||
|
|
flags = os.O_RDWR | os.O_CREATE | os.O_APPEND
|
||
|
|
default:
|
||
|
|
panic(m)
|
||
|
|
}
|
||
|
|
//TODO- flags |= fcntl.O_LARGEFILE
|
||
|
|
fd, _, err := unix.Syscall(unix.SYS_OPEN, pathname, uintptr(flags|unix.O_LARGEFILE), 0666)
|
||
|
|
if err != 0 {
|
||
|
|
t.setErrno(err)
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
if p := newFile(t, int32(fd)); p != 0 {
|
||
|
|
return p
|
||
|
|
}
|
||
|
|
|
||
|
|
Xclose(t, int32(fd))
|
||
|
|
t.setErrno(errno.ENOMEM)
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// int iswspace(wint_t wc);
|
||
|
|
func Xiswspace(t *TLS, wc wctype.Wint_t) int32 {
|
||
|
|
return Bool32(unicode.IsSpace(rune(wc)))
|
||
|
|
}
|
||
|
|
|
||
|
|
// int iswalnum(wint_t wc);
|
||
|
|
func Xiswalnum(t *TLS, wc wctype.Wint_t) int32 {
|
||
|
|
return Bool32(unicode.IsLetter(rune(wc)) || unicode.IsNumber(rune(wc)))
|
||
|
|
}
|
||
|
|
|
||
|
|
func __syscall1(t *TLS, trap, p1 long) long {
|
||
|
|
return __syscall(unix.Syscall(uintptr(trap), uintptr(p1), 0, 0))
|
||
|
|
}
|
||
|
|
|
||
|
|
func __syscall3(t *TLS, trap, p1, p2, p3 long) long {
|
||
|
|
return __syscall(unix.Syscall(uintptr(trap), uintptr(p1), uintptr(p2), uintptr(p3)))
|
||
|
|
}
|
||
|
|
|
||
|
|
func __syscall4(t *TLS, trap, p1, p2, p3, p4 long) long {
|
||
|
|
return __syscall(unix.Syscall6(uintptr(trap), uintptr(p1), uintptr(p2), uintptr(p3), uintptr(p4), 0, 0))
|
||
|
|
}
|