syscall_linux_loong64.go (6857B)
1 // Copyright 2022 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 //go:build loong64 && linux 6 7 package unix 8 9 import "unsafe" 10 11 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT 12 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64 13 //sys Fchown(fd int, uid int, gid int) (err error) 14 //sys Fstatfs(fd int, buf *Statfs_t) (err error) 15 //sys Ftruncate(fd int, length int64) (err error) 16 //sysnb Getegid() (egid int) 17 //sysnb Geteuid() (euid int) 18 //sysnb Getgid() (gid int) 19 //sysnb Getuid() (uid int) 20 //sys Listen(s int, n int) (err error) 21 //sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 22 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 23 //sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK 24 25 func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) { 26 var ts *Timespec 27 if timeout != nil { 28 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000} 29 } 30 return pselect6(nfd, r, w, e, ts, nil) 31 } 32 33 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) 34 //sys setfsgid(gid int) (prev int, err error) 35 //sys setfsuid(uid int) (prev int, err error) 36 //sys Shutdown(fd int, how int) (err error) 37 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) 38 39 func timespecFromStatxTimestamp(x StatxTimestamp) Timespec { 40 return Timespec{ 41 Sec: x.Sec, 42 Nsec: int64(x.Nsec), 43 } 44 } 45 46 func Fstatat(fd int, path string, stat *Stat_t, flags int) error { 47 var r Statx_t 48 // Do it the glibc way, add AT_NO_AUTOMOUNT. 49 if err := Statx(fd, path, AT_NO_AUTOMOUNT|flags, STATX_BASIC_STATS, &r); err != nil { 50 return err 51 } 52 53 stat.Dev = Mkdev(r.Dev_major, r.Dev_minor) 54 stat.Ino = r.Ino 55 stat.Mode = uint32(r.Mode) 56 stat.Nlink = r.Nlink 57 stat.Uid = r.Uid 58 stat.Gid = r.Gid 59 stat.Rdev = Mkdev(r.Rdev_major, r.Rdev_minor) 60 // hope we don't get to process files so large to overflow these size 61 // fields... 62 stat.Size = int64(r.Size) 63 stat.Blksize = int32(r.Blksize) 64 stat.Blocks = int64(r.Blocks) 65 stat.Atim = timespecFromStatxTimestamp(r.Atime) 66 stat.Mtim = timespecFromStatxTimestamp(r.Mtime) 67 stat.Ctim = timespecFromStatxTimestamp(r.Ctime) 68 69 return nil 70 } 71 72 func Fstat(fd int, stat *Stat_t) (err error) { 73 return Fstatat(fd, "", stat, AT_EMPTY_PATH) 74 } 75 76 func Stat(path string, stat *Stat_t) (err error) { 77 return Fstatat(AT_FDCWD, path, stat, 0) 78 } 79 80 func Lchown(path string, uid int, gid int) (err error) { 81 return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW) 82 } 83 84 func Lstat(path string, stat *Stat_t) (err error) { 85 return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW) 86 } 87 88 //sys Statfs(path string, buf *Statfs_t) (err error) 89 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) 90 //sys Truncate(path string, length int64) (err error) 91 92 func Ustat(dev int, ubuf *Ustat_t) (err error) { 93 return ENOSYS 94 } 95 96 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 97 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 98 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 99 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 100 //sysnb setgroups(n int, list *_Gid_t) (err error) 101 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 102 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 103 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 104 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) 105 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 106 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 107 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 108 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 109 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 110 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 111 //sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) 112 113 //sysnb Gettimeofday(tv *Timeval) (err error) 114 115 func setTimespec(sec, nsec int64) Timespec { 116 return Timespec{Sec: sec, Nsec: nsec} 117 } 118 119 func setTimeval(sec, usec int64) Timeval { 120 return Timeval{Sec: sec, Usec: usec} 121 } 122 123 func Getrlimit(resource int, rlim *Rlimit) (err error) { 124 err = Prlimit(0, resource, nil, rlim) 125 return 126 } 127 128 func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) { 129 if tv == nil { 130 return utimensat(dirfd, path, nil, 0) 131 } 132 133 ts := []Timespec{ 134 NsecToTimespec(TimevalToNsec(tv[0])), 135 NsecToTimespec(TimevalToNsec(tv[1])), 136 } 137 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 138 } 139 140 func Time(t *Time_t) (Time_t, error) { 141 var tv Timeval 142 err := Gettimeofday(&tv) 143 if err != nil { 144 return 0, err 145 } 146 if t != nil { 147 *t = Time_t(tv.Sec) 148 } 149 return Time_t(tv.Sec), nil 150 } 151 152 func Utime(path string, buf *Utimbuf) error { 153 tv := []Timeval{ 154 {Sec: buf.Actime}, 155 {Sec: buf.Modtime}, 156 } 157 return Utimes(path, tv) 158 } 159 160 func utimes(path string, tv *[2]Timeval) (err error) { 161 if tv == nil { 162 return utimensat(AT_FDCWD, path, nil, 0) 163 } 164 165 ts := []Timespec{ 166 NsecToTimespec(TimevalToNsec(tv[0])), 167 NsecToTimespec(TimevalToNsec(tv[1])), 168 } 169 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 170 } 171 172 func (r *PtraceRegs) PC() uint64 { return r.Era } 173 174 func (r *PtraceRegs) SetPC(era uint64) { r.Era = era } 175 176 func (iov *Iovec) SetLen(length int) { 177 iov.Len = uint64(length) 178 } 179 180 func (msghdr *Msghdr) SetControllen(length int) { 181 msghdr.Controllen = uint64(length) 182 } 183 184 func (msghdr *Msghdr) SetIovlen(length int) { 185 msghdr.Iovlen = uint64(length) 186 } 187 188 func (cmsg *Cmsghdr) SetLen(length int) { 189 cmsg.Len = uint64(length) 190 } 191 192 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { 193 rsa.Service_name_len = uint64(length) 194 } 195 196 func Pause() error { 197 _, err := ppoll(nil, 0, nil, nil) 198 return err 199 } 200 201 func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) { 202 return Renameat2(olddirfd, oldpath, newdirfd, newpath, 0) 203 } 204 205 //sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) 206 207 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { 208 cmdlineLen := len(cmdline) 209 if cmdlineLen > 0 { 210 // Account for the additional NULL byte added by 211 // BytePtrFromString in kexecFileLoad. The kexec_file_load 212 // syscall expects a NULL-terminated string. 213 cmdlineLen++ 214 } 215 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) 216 } 217 218 const SYS_FSTATAT = SYS_NEWFSTATAT