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1 // Copyright 2021 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 linux && ppc |
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6 // +build linux |
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7 // +build ppc |
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8 |
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9 package unix |
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10 |
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11 import ( |
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12 "syscall" |
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13 "unsafe" |
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14 ) |
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15 |
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16 //sys dup2(oldfd int, newfd int) (err error) |
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17 //sysnb EpollCreate(size int) (fd int, err error) |
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18 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) |
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19 //sys Fchown(fd int, uid int, gid int) (err error) |
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20 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 |
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21 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 |
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22 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 |
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23 //sysnb Getegid() (egid int) |
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24 //sysnb Geteuid() (euid int) |
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25 //sysnb Getgid() (gid int) |
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26 //sysnb Getuid() (uid int) |
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27 //sysnb InotifyInit() (fd int, err error) |
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28 //sys Ioperm(from int, num int, on int) (err error) |
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29 //sys Iopl(level int) (err error) |
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30 //sys Lchown(path string, uid int, gid int) (err error) |
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31 //sys Listen(s int, n int) (err error) |
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32 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 |
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33 //sys Pause() (err error) |
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34 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 |
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35 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 |
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36 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) |
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37 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT |
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38 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 |
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39 //sys setfsgid(gid int) (prev int, err error) |
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40 //sys setfsuid(uid int) (prev int, err error) |
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41 //sysnb Setregid(rgid int, egid int) (err error) |
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42 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) |
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43 //sysnb Setresuid(ruid int, euid int, suid int) (err error) |
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44 //sysnb Setreuid(ruid int, euid int) (err error) |
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45 //sys Shutdown(fd int, how int) (err error) |
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46 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) |
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47 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 |
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48 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 |
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49 //sys Ustat(dev int, ubuf *Ustat_t) (err error) |
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50 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) |
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51 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) |
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52 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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53 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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54 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) |
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55 //sysnb setgroups(n int, list *_Gid_t) (err error) |
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56 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) |
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57 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) |
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58 //sysnb socket(domain int, typ int, proto int) (fd int, err error) |
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59 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) |
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60 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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61 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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62 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) |
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63 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) |
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64 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) |
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65 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) |
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66 |
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67 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) |
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68 //sysnb Gettimeofday(tv *Timeval) (err error) |
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69 //sysnb Time(t *Time_t) (tt Time_t, err error) |
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70 //sys Utime(path string, buf *Utimbuf) (err error) |
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71 //sys utimes(path string, times *[2]Timeval) (err error) |
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72 |
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73 func Fadvise(fd int, offset int64, length int64, advice int) (err error) { |
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74 _, _, e1 := Syscall6(SYS_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset>>32), uintptr(offset), uintptr(length>>32), uintptr(length)) |
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75 if e1 != 0 { |
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76 err = errnoErr(e1) |
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77 } |
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78 return |
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79 } |
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80 |
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81 func seek(fd int, offset int64, whence int) (int64, syscall.Errno) { |
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82 var newoffset int64 |
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83 offsetLow := uint32(offset & 0xffffffff) |
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84 offsetHigh := uint32((offset >> 32) & 0xffffffff) |
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85 _, _, err := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offsetHigh), uintptr(offsetLow), uintptr(unsafe.Pointer(&newoffset)), uintptr(whence), 0) |
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86 return newoffset, err |
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87 } |
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88 |
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89 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { |
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90 newoffset, errno := seek(fd, offset, whence) |
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91 if errno != 0 { |
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92 return 0, errno |
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93 } |
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94 return newoffset, nil |
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95 } |
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96 |
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97 func Fstatfs(fd int, buf *Statfs_t) (err error) { |
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98 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) |
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99 if e != 0 { |
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100 err = e |
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101 } |
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102 return |
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103 } |
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104 |
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105 func Statfs(path string, buf *Statfs_t) (err error) { |
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106 pathp, err := BytePtrFromString(path) |
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107 if err != nil { |
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108 return err |
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109 } |
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110 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) |
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111 if e != 0 { |
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112 err = e |
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113 } |
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114 return |
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115 } |
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116 |
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117 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) |
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118 |
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119 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { |
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120 page := uintptr(offset / 4096) |
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121 if offset != int64(page)*4096 { |
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122 return 0, EINVAL |
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123 } |
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124 return mmap2(addr, length, prot, flags, fd, page) |
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125 } |
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126 |
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127 func setTimespec(sec, nsec int64) Timespec { |
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128 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} |
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129 } |
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130 |
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131 func setTimeval(sec, usec int64) Timeval { |
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132 return Timeval{Sec: int32(sec), Usec: int32(usec)} |
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133 } |
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134 |
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135 type rlimit32 struct { |
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136 Cur uint32 |
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137 Max uint32 |
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138 } |
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139 |
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140 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT |
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141 |
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142 const rlimInf32 = ^uint32(0) |
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143 const rlimInf64 = ^uint64(0) |
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144 |
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145 func Getrlimit(resource int, rlim *Rlimit) (err error) { |
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146 err = prlimit(0, resource, nil, rlim) |
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147 if err != ENOSYS { |
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148 return err |
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149 } |
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150 |
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151 rl := rlimit32{} |
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152 err = getrlimit(resource, &rl) |
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153 if err != nil { |
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154 return |
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155 } |
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156 |
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157 if rl.Cur == rlimInf32 { |
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158 rlim.Cur = rlimInf64 |
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159 } else { |
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160 rlim.Cur = uint64(rl.Cur) |
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161 } |
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162 |
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163 if rl.Max == rlimInf32 { |
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164 rlim.Max = rlimInf64 |
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165 } else { |
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166 rlim.Max = uint64(rl.Max) |
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167 } |
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168 return |
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169 } |
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170 |
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171 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT |
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172 |
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173 func Setrlimit(resource int, rlim *Rlimit) (err error) { |
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174 err = prlimit(0, resource, rlim, nil) |
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175 if err != ENOSYS { |
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176 return err |
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177 } |
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178 |
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179 rl := rlimit32{} |
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180 if rlim.Cur == rlimInf64 { |
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181 rl.Cur = rlimInf32 |
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182 } else if rlim.Cur < uint64(rlimInf32) { |
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183 rl.Cur = uint32(rlim.Cur) |
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184 } else { |
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185 return EINVAL |
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186 } |
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187 if rlim.Max == rlimInf64 { |
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188 rl.Max = rlimInf32 |
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189 } else if rlim.Max < uint64(rlimInf32) { |
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190 rl.Max = uint32(rlim.Max) |
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191 } else { |
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192 return EINVAL |
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193 } |
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194 |
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195 return setrlimit(resource, &rl) |
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196 } |
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197 |
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198 func (r *PtraceRegs) PC() uint32 { return r.Nip } |
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199 |
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200 func (r *PtraceRegs) SetPC(pc uint32) { r.Nip = pc } |
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201 |
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202 func (iov *Iovec) SetLen(length int) { |
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203 iov.Len = uint32(length) |
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204 } |
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205 |
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206 func (msghdr *Msghdr) SetControllen(length int) { |
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207 msghdr.Controllen = uint32(length) |
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208 } |
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209 |
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210 func (msghdr *Msghdr) SetIovlen(length int) { |
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211 msghdr.Iovlen = uint32(length) |
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212 } |
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213 |
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214 func (cmsg *Cmsghdr) SetLen(length int) { |
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215 cmsg.Len = uint32(length) |
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216 } |
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217 |
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218 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { |
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219 rsa.Service_name_len = uint32(length) |
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220 } |
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221 |
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222 //sysnb pipe(p *[2]_C_int) (err error) |
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223 |
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224 func Pipe(p []int) (err error) { |
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225 if len(p) != 2 { |
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226 return EINVAL |
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227 } |
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228 var pp [2]_C_int |
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229 err = pipe(&pp) |
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230 p[0] = int(pp[0]) |
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231 p[1] = int(pp[1]) |
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232 return |
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233 } |
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234 |
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235 //sysnb pipe2(p *[2]_C_int, flags int) (err error) |
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236 |
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237 func Pipe2(p []int, flags int) (err error) { |
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238 if len(p) != 2 { |
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239 return EINVAL |
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240 } |
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241 var pp [2]_C_int |
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242 err = pipe2(&pp, flags) |
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243 p[0] = int(pp[0]) |
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244 p[1] = int(pp[1]) |
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245 return |
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246 } |
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247 |
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248 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) |
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249 |
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250 func Poll(fds []PollFd, timeout int) (n int, err error) { |
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251 if len(fds) == 0 { |
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252 return poll(nil, 0, timeout) |
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253 } |
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254 return poll(&fds[0], len(fds), timeout) |
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255 } |
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256 |
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257 //sys syncFileRange2(fd int, flags int, off int64, n int64) (err error) = SYS_SYNC_FILE_RANGE2 |
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258 |
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259 func SyncFileRange(fd int, off int64, n int64, flags int) error { |
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260 // The sync_file_range and sync_file_range2 syscalls differ only in the |
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261 // order of their arguments. |
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262 return syncFileRange2(fd, flags, off, n) |
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263 } |
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264 |
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265 //sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) |
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266 |
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267 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { |
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268 cmdlineLen := len(cmdline) |
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269 if cmdlineLen > 0 { |
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270 // Account for the additional NULL byte added by |
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271 // BytePtrFromString in kexecFileLoad. The kexec_file_load |
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272 // syscall expects a NULL-terminated string. |
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273 cmdlineLen++ |
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274 } |
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275 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) |
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276 } |