author | Mikael Berthe <mikael@lilotux.net> |
Tue, 23 Aug 2022 22:39:43 +0200 | |
changeset 260 | 445e01aede7e |
parent 256 | 6d9efbef00a9 |
child 262 | 8d3354485fc3 |
permissions | -rw-r--r-- |
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1 |
// Copyright 2009 The Go 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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256 | 5 |
//go:build 386 && linux |
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6 |
// +build 386,linux |
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|
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package unix |
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|
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import ( |
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"unsafe" |
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) |
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|
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func setTimespec(sec, nsec int64) Timespec { |
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return Timespec{Sec: int32(sec), Nsec: int32(nsec)} |
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} |
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17 |
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func setTimeval(sec, usec int64) Timeval { |
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return Timeval{Sec: int32(sec), Usec: int32(usec)} |
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} |
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// 64-bit file system and 32-bit uid calls |
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// (386 default is 32-bit file system and 16-bit uid). |
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//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) |
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//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64_64 |
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//sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 |
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//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 |
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//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 |
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//sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 |
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//sysnb Getegid() (egid int) = SYS_GETEGID32 |
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//sysnb Geteuid() (euid int) = SYS_GETEUID32 |
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//sysnb Getgid() (gid int) = SYS_GETGID32 |
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//sysnb Getuid() (uid int) = SYS_GETUID32 |
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//sys Ioperm(from int, num int, on int) (err error) |
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//sys Iopl(level int) (err error) |
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//sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 |
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//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 |
260 | 38 |
//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 |
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//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 |
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251 | 40 |
//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) |
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//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 |
251 | 42 |
//sys setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32 |
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//sys setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32 |
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//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 |
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//sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 |
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//sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 |
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//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 |
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//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) |
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//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 |
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//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) |
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//sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 |
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//sys Ustat(dev int, ubuf *Ustat_t) (err error) |
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//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 |
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//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 |
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//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT |
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//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) |
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//sys Pause() (err error) |
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func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { |
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page := uintptr(offset / 4096) |
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if offset != int64(page)*4096 { |
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return 0, EINVAL |
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} |
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return mmap2(addr, length, prot, flags, fd, page) |
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} |
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68 |
type rlimit32 struct { |
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69 |
Cur uint32 |
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70 |
Max uint32 |
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71 |
} |
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72 |
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256 | 73 |
//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT |
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74 |
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const rlimInf32 = ^uint32(0) |
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const rlimInf64 = ^uint64(0) |
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77 |
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78 |
func Getrlimit(resource int, rlim *Rlimit) (err error) { |
260 | 79 |
err = Prlimit(0, resource, nil, rlim) |
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80 |
if err != ENOSYS { |
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81 |
return err |
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82 |
} |
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83 |
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84 |
rl := rlimit32{} |
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85 |
err = getrlimit(resource, &rl) |
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86 |
if err != nil { |
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87 |
return |
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88 |
} |
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89 |
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90 |
if rl.Cur == rlimInf32 { |
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91 |
rlim.Cur = rlimInf64 |
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92 |
} else { |
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93 |
rlim.Cur = uint64(rl.Cur) |
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94 |
} |
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95 |
|
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96 |
if rl.Max == rlimInf32 { |
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97 |
rlim.Max = rlimInf64 |
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98 |
} else { |
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99 |
rlim.Max = uint64(rl.Max) |
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100 |
} |
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101 |
return |
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102 |
} |
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103 |
|
256 | 104 |
//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT |
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105 |
|
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106 |
func Setrlimit(resource int, rlim *Rlimit) (err error) { |
260 | 107 |
err = Prlimit(0, resource, rlim, nil) |
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108 |
if err != ENOSYS { |
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109 |
return err |
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110 |
} |
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111 |
|
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112 |
rl := rlimit32{} |
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113 |
if rlim.Cur == rlimInf64 { |
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114 |
rl.Cur = rlimInf32 |
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115 |
} else if rlim.Cur < uint64(rlimInf32) { |
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116 |
rl.Cur = uint32(rlim.Cur) |
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117 |
} else { |
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118 |
return EINVAL |
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119 |
} |
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120 |
if rlim.Max == rlimInf64 { |
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121 |
rl.Max = rlimInf32 |
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122 |
} else if rlim.Max < uint64(rlimInf32) { |
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123 |
rl.Max = uint32(rlim.Max) |
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124 |
} else { |
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125 |
return EINVAL |
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126 |
} |
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127 |
|
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128 |
return setrlimit(resource, &rl) |
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129 |
} |
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130 |
|
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131 |
func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { |
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132 |
newoffset, errno := seek(fd, offset, whence) |
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|
133 |
if errno != 0 { |
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|
134 |
return 0, errno |
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135 |
} |
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|
136 |
return newoffset, nil |
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137 |
} |
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138 |
|
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|
139 |
//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) |
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140 |
//sysnb Gettimeofday(tv *Timeval) (err error) |
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141 |
//sysnb Time(t *Time_t) (tt Time_t, err error) |
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142 |
//sys Utime(path string, buf *Utimbuf) (err error) |
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143 |
//sys utimes(path string, times *[2]Timeval) (err error) |
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144 |
|
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145 |
// On x86 Linux, all the socket calls go through an extra indirection, |
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146 |
// I think because the 5-register system call interface can't handle |
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147 |
// the 6-argument calls like sendto and recvfrom. Instead the |
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148 |
// arguments to the underlying system call are the number below |
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149 |
// and a pointer to an array of uintptr. We hide the pointer in the |
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150 |
// socketcall assembly to avoid allocation on every system call. |
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151 |
|
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152 |
const ( |
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153 |
// see linux/net.h |
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154 |
_SOCKET = 1 |
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|
155 |
_BIND = 2 |
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|
156 |
_CONNECT = 3 |
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|
157 |
_LISTEN = 4 |
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|
158 |
_ACCEPT = 5 |
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|
159 |
_GETSOCKNAME = 6 |
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|
160 |
_GETPEERNAME = 7 |
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|
161 |
_SOCKETPAIR = 8 |
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|
162 |
_SEND = 9 |
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|
163 |
_RECV = 10 |
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|
164 |
_SENDTO = 11 |
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|
165 |
_RECVFROM = 12 |
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|
166 |
_SHUTDOWN = 13 |
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|
167 |
_SETSOCKOPT = 14 |
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|
168 |
_GETSOCKOPT = 15 |
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|
169 |
_SENDMSG = 16 |
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|
170 |
_RECVMSG = 17 |
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|
171 |
_ACCEPT4 = 18 |
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|
172 |
_RECVMMSG = 19 |
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|
173 |
_SENDMMSG = 20 |
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|
174 |
) |
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|
175 |
|
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|
176 |
func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) { |
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|
177 |
fd, e := socketcall(_ACCEPT4, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags), 0, 0) |
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|
178 |
if e != 0 { |
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|
179 |
err = e |
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|
180 |
} |
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|
181 |
return |
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|
182 |
} |
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|
183 |
|
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|
184 |
func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) { |
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|
185 |
_, e := rawsocketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0) |
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|
186 |
if e != 0 { |
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|
187 |
err = e |
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changeset
|
188 |
} |
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|
189 |
return |
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|
190 |
} |
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|
191 |
|
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|
192 |
func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) { |
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|
193 |
_, e := rawsocketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0) |
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|
194 |
if e != 0 { |
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|
195 |
err = e |
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changeset
|
196 |
} |
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|
197 |
return |
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|
198 |
} |
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|
199 |
|
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|
200 |
func socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) { |
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|
201 |
_, e := rawsocketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd)), 0, 0) |
2a9ec03fe5a1
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changeset
|
202 |
if e != 0 { |
2a9ec03fe5a1
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parents:
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changeset
|
203 |
err = e |
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changeset
|
204 |
} |
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changeset
|
205 |
return |
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changeset
|
206 |
} |
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changeset
|
207 |
|
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|
208 |
func bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) { |
2a9ec03fe5a1
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|
209 |
_, e := socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0) |
2a9ec03fe5a1
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|
210 |
if e != 0 { |
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diff
changeset
|
211 |
err = e |
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parents:
diff
changeset
|
212 |
} |
2a9ec03fe5a1
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|
213 |
return |
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changeset
|
214 |
} |
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changeset
|
215 |
|
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|
216 |
func connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) { |
2a9ec03fe5a1
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|
217 |
_, e := socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0) |
2a9ec03fe5a1
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|
218 |
if e != 0 { |
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|
219 |
err = e |
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changeset
|
220 |
} |
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|
221 |
return |
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changeset
|
222 |
} |
2a9ec03fe5a1
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|
223 |
|
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|
224 |
func socket(domain int, typ int, proto int) (fd int, err error) { |
2a9ec03fe5a1
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|
225 |
fd, e := rawsocketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0) |
2a9ec03fe5a1
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|
226 |
if e != 0 { |
2a9ec03fe5a1
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|
227 |
err = e |
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changeset
|
228 |
} |
2a9ec03fe5a1
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|
229 |
return |
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changeset
|
230 |
} |
2a9ec03fe5a1
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changeset
|
231 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
232 |
func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) { |
2a9ec03fe5a1
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|
233 |
_, e := socketcall(_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
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changeset
|
234 |
if e != 0 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
235 |
err = e |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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diff
changeset
|
236 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
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changeset
|
237 |
return |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
238 |
} |
2a9ec03fe5a1
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changeset
|
239 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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diff
changeset
|
240 |
func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
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changeset
|
241 |
_, e := socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), vallen, 0) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
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diff
changeset
|
242 |
if e != 0 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
243 |
err = e |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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diff
changeset
|
244 |
} |
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|
245 |
return |
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|
246 |
} |
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|
247 |
|
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|
248 |
func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) { |
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|
249 |
var base uintptr |
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|
250 |
if len(p) > 0 { |
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|
251 |
base = uintptr(unsafe.Pointer(&p[0])) |
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|
252 |
} |
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|
253 |
n, e := socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen))) |
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|
254 |
if e != 0 { |
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|
255 |
err = e |
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|
256 |
} |
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|
257 |
return |
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|
258 |
} |
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|
259 |
|
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|
260 |
func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) { |
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|
261 |
var base uintptr |
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|
262 |
if len(p) > 0 { |
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|
263 |
base = uintptr(unsafe.Pointer(&p[0])) |
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|
264 |
} |
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|
265 |
_, e := socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen)) |
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|
266 |
if e != 0 { |
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|
267 |
err = e |
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changeset
|
268 |
} |
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|
269 |
return |
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|
270 |
} |
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|
271 |
|
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|
272 |
func recvmsg(s int, msg *Msghdr, flags int) (n int, err error) { |
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|
273 |
n, e := socketcall(_RECVMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0) |
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|
274 |
if e != 0 { |
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|
275 |
err = e |
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|
276 |
} |
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|
277 |
return |
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|
278 |
} |
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|
279 |
|
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|
280 |
func sendmsg(s int, msg *Msghdr, flags int) (n int, err error) { |
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|
281 |
n, e := socketcall(_SENDMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0) |
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|
282 |
if e != 0 { |
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|
283 |
err = e |
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|
284 |
} |
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|
285 |
return |
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changeset
|
286 |
} |
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|
287 |
|
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|
288 |
func Listen(s int, n int) (err error) { |
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|
289 |
_, e := socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0) |
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|
290 |
if e != 0 { |
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Mikael Berthe <mikael@lilotux.net>
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|
291 |
err = e |
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changeset
|
292 |
} |
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changeset
|
293 |
return |
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changeset
|
294 |
} |
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changeset
|
295 |
|
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|
296 |
func Shutdown(s, how int) (err error) { |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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|
297 |
_, e := socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0) |
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changeset
|
298 |
if e != 0 { |
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changeset
|
299 |
err = e |
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changeset
|
300 |
} |
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changeset
|
301 |
return |
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
302 |
} |
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changeset
|
303 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
304 |
func Fstatfs(fd int, buf *Statfs_t) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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changeset
|
305 |
_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
306 |
if e != 0 { |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
307 |
err = e |
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Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
308 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
309 |
return |
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
310 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
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parents:
diff
changeset
|
311 |
|
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
312 |
func Statfs(path string, buf *Statfs_t) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
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changeset
|
313 |
pathp, err := BytePtrFromString(path) |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
314 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
315 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
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diff
changeset
|
316 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
317 |
_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
318 |
if e != 0 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
319 |
err = e |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
320 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
321 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
322 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
323 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
324 |
func (r *PtraceRegs) PC() uint64 { return uint64(uint32(r.Eip)) } |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
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changeset
|
325 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
326 |
func (r *PtraceRegs) SetPC(pc uint64) { r.Eip = int32(pc) } |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
327 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
328 |
func (iov *Iovec) SetLen(length int) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
329 |
iov.Len = uint32(length) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
330 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
331 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
332 |
func (msghdr *Msghdr) SetControllen(length int) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
333 |
msghdr.Controllen = uint32(length) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
334 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
335 |
|
251 | 336 |
func (msghdr *Msghdr) SetIovlen(length int) { |
337 |
msghdr.Iovlen = uint32(length) |
|
338 |
} |
|
339 |
||
242
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
340 |
func (cmsg *Cmsghdr) SetLen(length int) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
341 |
cmsg.Len = uint32(length) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
342 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
343 |
|
256 | 344 |
func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { |
345 |
rsa.Service_name_len = uint32(length) |
|
346 |
} |