mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-27 06:06:38 +00:00
414 lines
12 KiB
Go
414 lines
12 KiB
Go
// Copyright 2020 The Libc Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package libc // import "modernc.org/libc"
|
|
|
|
import (
|
|
"os"
|
|
"strings"
|
|
"unicode"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
"modernc.org/libc/errno"
|
|
"modernc.org/libc/fcntl"
|
|
"modernc.org/libc/signal"
|
|
"modernc.org/libc/sys/types"
|
|
"modernc.org/libc/utime"
|
|
"modernc.org/libc/wctype"
|
|
)
|
|
|
|
// int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
|
|
func Xsigaction(t *TLS, signum int32, act, oldact uintptr) int32 {
|
|
// musl/arch/x86_64/ksigaction.h
|
|
//
|
|
// struct k_sigaction {
|
|
// void (*handler)(int);
|
|
// unsigned long flags;
|
|
// void (*restorer)(void);
|
|
// unsigned mask[2];
|
|
// };
|
|
type k_sigaction struct {
|
|
handler uintptr
|
|
flags ulong
|
|
restorer uintptr
|
|
mask [2]uint32
|
|
}
|
|
|
|
var kact, koldact uintptr
|
|
if act != 0 {
|
|
sz := int(unsafe.Sizeof(k_sigaction{}))
|
|
kact = t.Alloc(sz)
|
|
defer t.Free(sz)
|
|
*(*k_sigaction)(unsafe.Pointer(kact)) = k_sigaction{
|
|
handler: (*signal.Sigaction)(unsafe.Pointer(act)).F__sigaction_handler.Fsa_handler,
|
|
flags: ulong((*signal.Sigaction)(unsafe.Pointer(act)).Fsa_flags),
|
|
restorer: (*signal.Sigaction)(unsafe.Pointer(act)).Fsa_restorer,
|
|
}
|
|
Xmemcpy(t, kact+unsafe.Offsetof(k_sigaction{}.mask), act+unsafe.Offsetof(signal.Sigaction{}.Fsa_mask), types.Size_t(unsafe.Sizeof(k_sigaction{}.mask)))
|
|
}
|
|
if oldact != 0 {
|
|
panic(todo(""))
|
|
}
|
|
|
|
if _, _, err := unix.Syscall6(unix.SYS_RT_SIGACTION, uintptr(signum), kact, koldact, unsafe.Sizeof(k_sigaction{}.mask), 0, 0); err != 0 {
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
if oldact != 0 {
|
|
panic(todo(""))
|
|
}
|
|
|
|
return 0
|
|
}
|
|
|
|
// int fcntl(int fd, int cmd, ... /* arg */ );
|
|
func Xfcntl64(t *TLS, fd, cmd int32, args uintptr) int32 {
|
|
var arg uintptr
|
|
if args != 0 {
|
|
arg = *(*uintptr)(unsafe.Pointer(args))
|
|
}
|
|
if cmd == fcntl.F_SETFL {
|
|
arg |= unix.O_LARGEFILE
|
|
}
|
|
n, _, err := unix.Syscall(unix.SYS_FCNTL, uintptr(fd), uintptr(cmd), arg)
|
|
if err != 0 {
|
|
// if dmesgs {
|
|
// dmesg("%v: fd %v cmd %v", origin(1), fcntlCmdStr(fd), cmd)
|
|
// }
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
// if dmesgs {
|
|
// dmesg("%v: %d %s %#x: %d", origin(1), fd, fcntlCmdStr(cmd), arg, n)
|
|
// }
|
|
return int32(n)
|
|
}
|
|
|
|
// int fstatat(int dirfd, const char *pathname, struct stat *statbuf, int flags);
|
|
func Xfstatat(t *TLS, dirfd int32, pathname, statbuf uintptr, flags int32) int32 {
|
|
// From golang.org/x/sys/unix/zsyscall_linux_riscv64.go
|
|
if _, _, err := unix.Syscall6(unix.SYS_FSTATAT, uintptr(dirfd), pathname, statbuf, uintptr(flags), 0, 0); err != 0 {
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
return 0
|
|
}
|
|
|
|
// int lstat(const char *pathname, struct stat *statbuf);
|
|
func Xlstat64(t *TLS, pathname, statbuf uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux_riscv64.go
|
|
return Xfstatat(t, unix.AT_FDCWD, pathname, statbuf, unix.AT_SYMLINK_NOFOLLOW)
|
|
}
|
|
|
|
// int stat(const char *pathname, struct stat *statbuf);
|
|
func Xstat64(t *TLS, pathname, statbuf uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux_riscv64.go
|
|
return Xfstatat(t, unix.AT_FDCWD, pathname, statbuf, 0)
|
|
}
|
|
|
|
// int fstat(int fd, struct stat *statbuf);
|
|
func Xfstat64(t *TLS, fd int32, statbuf uintptr) int32 {
|
|
if _, _, err := unix.Syscall(unix.SYS_FSTAT, uintptr(fd), statbuf, 0); err != 0 {
|
|
// if dmesgs {
|
|
// dmesg("%v: fd %d: %v", origin(1), fd, err)
|
|
// }
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
// if dmesgs {
|
|
// dmesg("%v: %d size %#x: ok\n%+v", origin(1), fd, (*stat.Stat)(unsafe.Pointer(statbuf)).Fst_size, (*stat.Stat)(unsafe.Pointer(statbuf)))
|
|
// }
|
|
return 0
|
|
}
|
|
|
|
func Xmmap(t *TLS, addr uintptr, length types.Size_t, prot, flags, fd int32, offset types.Off_t) uintptr {
|
|
return Xmmap64(t, addr, length, prot, flags, fd, offset)
|
|
}
|
|
|
|
// void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
|
|
func Xmmap64(t *TLS, addr uintptr, length types.Size_t, prot, flags, fd int32, offset types.Off_t) uintptr {
|
|
data, _, err := unix.Syscall6(unix.SYS_MMAP, addr, uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset))
|
|
if err != 0 {
|
|
// if dmesgs {
|
|
// dmesg("%v: %v", origin(1), err)
|
|
// }
|
|
t.setErrno(err)
|
|
return ^uintptr(0) // (void*)-1
|
|
}
|
|
|
|
// if dmesgs {
|
|
// dmesg("%v: %#x", origin(1), data)
|
|
// }
|
|
return data
|
|
}
|
|
|
|
// void *mremap(void *old_address, size_t old_size, size_t new_size, int flags, ... /* void *new_address */);
|
|
func Xmremap(t *TLS, old_address uintptr, old_size, new_size types.Size_t, flags int32, args uintptr) uintptr {
|
|
var arg uintptr
|
|
if args != 0 {
|
|
arg = *(*uintptr)(unsafe.Pointer(args))
|
|
}
|
|
data, _, err := unix.Syscall6(unix.SYS_MREMAP, old_address, uintptr(old_size), uintptr(new_size), uintptr(flags), arg, 0)
|
|
if err != 0 {
|
|
// if dmesgs {
|
|
// dmesg("%v: %v", origin(1), err)
|
|
// }
|
|
t.setErrno(err)
|
|
return ^uintptr(0) // (void*)-1
|
|
}
|
|
|
|
// if dmesgs {
|
|
// dmesg("%v: %#x", origin(1), data)
|
|
// }
|
|
return data
|
|
}
|
|
|
|
// int ftruncate(int fd, off_t length);
|
|
func Xftruncate64(t *TLS, fd int32, length types.Off_t) int32 {
|
|
if _, _, err := unix.Syscall(unix.SYS_FTRUNCATE, uintptr(fd), uintptr(length), 0); err != 0 {
|
|
// if dmesgs {
|
|
// dmesg("%v: fd %d: %v", origin(1), fd, err)
|
|
// }
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
// if dmesgs {
|
|
// dmesg("%v: %d %#x: ok", origin(1), fd, length)
|
|
// }
|
|
return 0
|
|
}
|
|
|
|
// off64_t lseek64(int fd, off64_t offset, int whence);
|
|
func Xlseek64(t *TLS, fd int32, offset types.Off_t, whence int32) types.Off_t {
|
|
n, _, err := unix.Syscall(unix.SYS_LSEEK, uintptr(fd), uintptr(offset), uintptr(whence))
|
|
if err != 0 {
|
|
// if dmesgs {
|
|
// dmesg("%v: fd %v, off %#x, whence %v: %v", origin(1), fd, offset, whenceStr(whence), err)
|
|
// }
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
// if dmesgs {
|
|
// dmesg("%v: fd %v, off %#x, whence %v: %#x", origin(1), fd, offset, whenceStr(whence), n)
|
|
// }
|
|
return types.Off_t(n)
|
|
}
|
|
|
|
// From man utime executed on linux/riscv64:
|
|
//
|
|
// The utimbuf structure is:
|
|
//
|
|
// struct utimbuf {
|
|
// time_t actime; /* access time */
|
|
// time_t modtime; /* modification time */
|
|
// };
|
|
|
|
type utimbuf struct {
|
|
actime utime.Time_t
|
|
modtime utime.Time_t
|
|
}
|
|
|
|
// int utime(const char *filename, const struct utimbuf *times);
|
|
func Xutime(t *TLS, filename, times uintptr) int32 {
|
|
if times == 0 {
|
|
return Xutimes(t, filename, 0)
|
|
}
|
|
|
|
n := int(unsafe.Sizeof([2]types.Timeval{}))
|
|
p := t.Alloc(n)
|
|
defer t.Free(n)
|
|
*(*[2]types.Timeval)(unsafe.Pointer(p)) = [2]types.Timeval{
|
|
{Ftv_sec: (*utimbuf)(unsafe.Pointer(times)).actime},
|
|
{Ftv_sec: (*utimbuf)(unsafe.Pointer(times)).modtime},
|
|
}
|
|
return Xutimes(t, filename, p)
|
|
}
|
|
|
|
// unsigned int alarm(unsigned int seconds);
|
|
func Xalarm(t *TLS, seconds uint32) uint32 {
|
|
panic(todo(""))
|
|
// No alarm syscall on linux/riscv64. And cannot implement with setitimer as in musl,
|
|
// because of missing defination to constant ITIMER_REAL in types_linux_riscv64.go.
|
|
}
|
|
|
|
// time_t time(time_t *tloc);
|
|
func Xtime(t *TLS, tloc uintptr) types.Time_t {
|
|
// From golang.org/x/sys/unix/syscall_linux_riscv64.go
|
|
var tv types.Timeval
|
|
if err := Xgettimeofday(t, uintptr(unsafe.Pointer(&tv)), 0); err != 0 {
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
if tloc != 0 {
|
|
*(*types.Time_t)(unsafe.Pointer(tloc)) = tv.Ftv_sec
|
|
}
|
|
return tv.Ftv_sec
|
|
}
|
|
|
|
// int getrlimit(int resource, struct rlimit *rlim);
|
|
func Xgetrlimit64(t *TLS, resource int32, rlim uintptr) int32 {
|
|
if _, _, err := unix.Syscall(unix.SYS_GETRLIMIT, uintptr(resource), uintptr(rlim), 0); err != 0 {
|
|
t.setErrno(err)
|
|
return -1
|
|
}
|
|
|
|
return 0
|
|
}
|
|
|
|
// int mkdir(const char *path, mode_t mode);
|
|
func Xmkdir(t *TLS, path uintptr, mode types.Mode_t) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xmkdirat(t, unix.AT_FDCWD, path, mode)
|
|
}
|
|
|
|
// int symlink(const char *target, const char *linkpath);
|
|
func Xsymlink(t *TLS, target, linkpath uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xsymlinkat(t, target, unix.AT_FDCWD, linkpath)
|
|
}
|
|
|
|
// int chmod(const char *pathname, mode_t mode)
|
|
func Xchmod(t *TLS, pathname uintptr, mode types.Mode_t) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xfchmodat(t, unix.AT_FDCWD, pathname, mode, 0)
|
|
}
|
|
|
|
// int utimes(const char *filename, const struct timeval times[2]);
|
|
func Xutimes(t *TLS, filename, times uintptr) int32 {
|
|
return Xutimensat(t, unix.AT_FDCWD, filename, times, 0)
|
|
}
|
|
|
|
// int unlink(const char *pathname);
|
|
func Xunlink(t *TLS, pathname uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xunlinkat(t, unix.AT_FDCWD, pathname, 0)
|
|
}
|
|
|
|
// int access(const char *pathname, int mode);
|
|
func Xaccess(t *TLS, pathname uintptr, mode int32) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xfaccessat(t, unix.AT_FDCWD, pathname, mode, 0)
|
|
}
|
|
|
|
// int rmdir(const char *pathname);
|
|
func Xrmdir(t *TLS, pathname uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xunlinkat(t, unix.AT_FDCWD, pathname, unix.AT_REMOVEDIR)
|
|
}
|
|
|
|
// int rename(const char *oldpath, const char *newpath);
|
|
func Xrename(t *TLS, oldpath, newpath uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xrenameat(t, unix.AT_FDCWD, oldpath, unix.AT_FDCWD, newpath)
|
|
}
|
|
|
|
// int renameat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath);
|
|
func Xrenameat(t *TLS, olddirfd int32, oldpath uintptr, newdirfd int32, newpath uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux_riscv64.go
|
|
return Xrenameat2(t, olddirfd, oldpath, newdirfd, newpath, 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 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xmknodat(t, unix.AT_FDCWD, pathname, mode, dev)
|
|
}
|
|
|
|
// 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 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xfchownat(t, unix.AT_FDCWD, pathname, owner, group, 0)
|
|
}
|
|
|
|
// int link(const char *oldpath, const char *newpath);
|
|
func Xlink(t *TLS, oldpath, newpath uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xlinkat(t, unix.AT_FDCWD, oldpath, unix.AT_FDCWD, newpath, 0)
|
|
}
|
|
|
|
// int pipe(int pipefd[2]);
|
|
func Xpipe(t *TLS, pipefd uintptr) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xpipe2(t, pipefd, 0)
|
|
}
|
|
|
|
// int dup2(int oldfd, int newfd);
|
|
func Xdup2(t *TLS, oldfd, newfd int32) int32 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xdup3(t, oldfd, newfd, 0)
|
|
}
|
|
|
|
// 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 {
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
return Xreadlinkat(t, unix.AT_FDCWD, path, buf, bufsize)
|
|
}
|
|
|
|
// 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
|
|
|
|
// From golang.org/x/sys/unix/syscall_linux.go
|
|
fd := Xopenat(t, unix.AT_FDCWD, pathname, int32(flags|unix.O_LARGEFILE), 0666)
|
|
if fd == -1 {
|
|
return 0
|
|
}
|
|
|
|
if p := newFile(t, fd); p != 0 {
|
|
return p
|
|
}
|
|
|
|
Xclose(t, 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))
|
|
}
|