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1 // Copyright 2022 The Go Authors. All rights reserved. |
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2 // Use of this source code is governed by a BSD-style |
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3 // license that can be found in the LICENSE file. |
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4 |
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5 //go:build loong64 && linux |
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6 // +build loong64,linux |
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7 |
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8 package unix |
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9 |
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10 import "unsafe" |
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11 |
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12 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT |
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13 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64 |
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14 //sys Fchown(fd int, uid int, gid int) (err error) |
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15 //sys Fstatfs(fd int, buf *Statfs_t) (err error) |
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16 //sys Ftruncate(fd int, length int64) (err error) |
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17 //sysnb Getegid() (egid int) |
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18 //sysnb Geteuid() (euid int) |
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19 //sysnb Getgid() (gid int) |
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20 //sysnb Getuid() (uid int) |
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21 //sys Listen(s int, n int) (err error) |
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22 //sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 |
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23 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 |
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24 //sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK |
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25 |
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26 func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) { |
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27 var ts *Timespec |
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28 if timeout != nil { |
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29 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000} |
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30 } |
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31 return Pselect(nfd, r, w, e, ts, nil) |
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32 } |
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33 |
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34 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) |
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35 //sys setfsgid(gid int) (prev int, err error) |
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36 //sys setfsuid(uid int) (prev int, err error) |
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37 //sysnb Setregid(rgid int, egid int) (err error) |
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38 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) |
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39 //sysnb Setresuid(ruid int, euid int, suid int) (err error) |
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40 //sysnb Setreuid(ruid int, euid int) (err error) |
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41 //sys Shutdown(fd int, how int) (err error) |
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42 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) |
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43 |
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44 func timespecFromStatxTimestamp(x StatxTimestamp) Timespec { |
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45 return Timespec{ |
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46 Sec: x.Sec, |
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47 Nsec: int64(x.Nsec), |
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48 } |
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49 } |
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50 |
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51 func Fstatat(fd int, path string, stat *Stat_t, flags int) error { |
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52 var r Statx_t |
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53 // Do it the glibc way, add AT_NO_AUTOMOUNT. |
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54 if err := Statx(fd, path, AT_NO_AUTOMOUNT|flags, STATX_BASIC_STATS, &r); err != nil { |
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55 return err |
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56 } |
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57 |
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58 stat.Dev = Mkdev(r.Dev_major, r.Dev_minor) |
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59 stat.Ino = r.Ino |
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60 stat.Mode = uint32(r.Mode) |
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61 stat.Nlink = r.Nlink |
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62 stat.Uid = r.Uid |
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63 stat.Gid = r.Gid |
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64 stat.Rdev = Mkdev(r.Rdev_major, r.Rdev_minor) |
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65 // hope we don't get to process files so large to overflow these size |
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66 // fields... |
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67 stat.Size = int64(r.Size) |
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68 stat.Blksize = int32(r.Blksize) |
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69 stat.Blocks = int64(r.Blocks) |
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70 stat.Atim = timespecFromStatxTimestamp(r.Atime) |
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71 stat.Mtim = timespecFromStatxTimestamp(r.Mtime) |
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72 stat.Ctim = timespecFromStatxTimestamp(r.Ctime) |
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73 |
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74 return nil |
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75 } |
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76 |
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77 func Fstat(fd int, stat *Stat_t) (err error) { |
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78 return Fstatat(fd, "", stat, AT_EMPTY_PATH) |
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79 } |
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80 |
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81 func Stat(path string, stat *Stat_t) (err error) { |
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82 return Fstatat(AT_FDCWD, path, stat, 0) |
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83 } |
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84 |
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85 func Lchown(path string, uid int, gid int) (err error) { |
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86 return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW) |
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87 } |
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88 |
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89 func Lstat(path string, stat *Stat_t) (err error) { |
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90 return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW) |
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91 } |
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92 |
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93 //sys Statfs(path string, buf *Statfs_t) (err error) |
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94 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) |
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95 //sys Truncate(path string, length int64) (err error) |
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96 |
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97 func Ustat(dev int, ubuf *Ustat_t) (err error) { |
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98 return ENOSYS |
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99 } |
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100 |
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101 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) |
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102 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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103 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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104 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) |
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105 //sysnb setgroups(n int, list *_Gid_t) (err error) |
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106 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) |
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107 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) |
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108 //sysnb socket(domain int, typ int, proto int) (fd int, err error) |
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109 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) |
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110 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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111 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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112 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) |
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113 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) |
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114 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) |
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115 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) |
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116 //sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) |
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117 |
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118 //sysnb Gettimeofday(tv *Timeval) (err error) |
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119 |
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120 func setTimespec(sec, nsec int64) Timespec { |
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121 return Timespec{Sec: sec, Nsec: nsec} |
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122 } |
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123 |
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124 func setTimeval(sec, usec int64) Timeval { |
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125 return Timeval{Sec: sec, Usec: usec} |
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126 } |
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127 |
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128 func Getrlimit(resource int, rlim *Rlimit) (err error) { |
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129 err = Prlimit(0, resource, nil, rlim) |
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130 return |
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131 } |
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132 |
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133 func Setrlimit(resource int, rlim *Rlimit) (err error) { |
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134 err = Prlimit(0, resource, rlim, nil) |
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135 return |
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136 } |
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137 |
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138 func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) { |
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139 if tv == nil { |
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140 return utimensat(dirfd, path, nil, 0) |
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141 } |
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142 |
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143 ts := []Timespec{ |
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144 NsecToTimespec(TimevalToNsec(tv[0])), |
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145 NsecToTimespec(TimevalToNsec(tv[1])), |
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146 } |
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147 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) |
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148 } |
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149 |
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150 func Time(t *Time_t) (Time_t, error) { |
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151 var tv Timeval |
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152 err := Gettimeofday(&tv) |
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153 if err != nil { |
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154 return 0, err |
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155 } |
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156 if t != nil { |
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157 *t = Time_t(tv.Sec) |
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158 } |
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159 return Time_t(tv.Sec), nil |
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160 } |
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161 |
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162 func Utime(path string, buf *Utimbuf) error { |
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163 tv := []Timeval{ |
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164 {Sec: buf.Actime}, |
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165 {Sec: buf.Modtime}, |
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166 } |
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167 return Utimes(path, tv) |
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168 } |
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169 |
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170 func utimes(path string, tv *[2]Timeval) (err error) { |
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171 if tv == nil { |
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172 return utimensat(AT_FDCWD, path, nil, 0) |
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173 } |
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174 |
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175 ts := []Timespec{ |
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176 NsecToTimespec(TimevalToNsec(tv[0])), |
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177 NsecToTimespec(TimevalToNsec(tv[1])), |
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178 } |
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179 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) |
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180 } |
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181 |
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182 func (r *PtraceRegs) PC() uint64 { return r.Era } |
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183 |
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184 func (r *PtraceRegs) SetPC(era uint64) { r.Era = era } |
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185 |
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186 func (iov *Iovec) SetLen(length int) { |
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187 iov.Len = uint64(length) |
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188 } |
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189 |
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190 func (msghdr *Msghdr) SetControllen(length int) { |
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191 msghdr.Controllen = uint64(length) |
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192 } |
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193 |
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194 func (msghdr *Msghdr) SetIovlen(length int) { |
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195 msghdr.Iovlen = uint64(length) |
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196 } |
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197 |
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198 func (cmsg *Cmsghdr) SetLen(length int) { |
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199 cmsg.Len = uint64(length) |
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200 } |
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201 |
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202 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { |
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203 rsa.Service_name_len = uint64(length) |
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204 } |
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205 |
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206 func Pause() error { |
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207 _, err := ppoll(nil, 0, nil, nil) |
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208 return err |
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209 } |
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210 |
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211 func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) { |
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212 return Renameat2(olddirfd, oldpath, newdirfd, newpath, 0) |
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213 } |
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214 |
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215 //sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) |
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216 |
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217 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { |
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218 cmdlineLen := len(cmdline) |
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219 if cmdlineLen > 0 { |
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220 // Account for the additional NULL byte added by |
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221 // BytePtrFromString in kexecFileLoad. The kexec_file_load |
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222 // syscall expects a NULL-terminated string. |
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223 cmdlineLen++ |
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224 } |
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225 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) |
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226 } |