author | Mikael Berthe <mikael@lilotux.net> |
Sat, 29 Sep 2018 18:09:54 +0200 | |
changeset 242 | 2a9ec03fe5a1 |
child 251 | 1c52a0eeb952 |
permissions | -rw-r--r-- |
242
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1 |
// Copyright 2009 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 |
// +build arm,linux |
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6 |
|
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7 |
package unix |
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8 |
|
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9 |
import ( |
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"syscall" |
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11 |
"unsafe" |
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12 |
) |
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13 |
|
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14 |
func setTimespec(sec, nsec int64) Timespec { |
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return Timespec{Sec: int32(sec), Nsec: int32(nsec)} |
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16 |
} |
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17 |
|
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18 |
func setTimeval(sec, usec int64) Timeval { |
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return Timeval{Sec: int32(sec), Usec: int32(usec)} |
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20 |
} |
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21 |
|
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func Pipe(p []int) (err error) { |
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if len(p) != 2 { |
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24 |
return EINVAL |
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25 |
} |
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26 |
var pp [2]_C_int |
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err = pipe2(&pp, 0) |
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28 |
p[0] = int(pp[0]) |
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p[1] = int(pp[1]) |
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30 |
return |
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31 |
} |
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//sysnb pipe2(p *[2]_C_int, flags int) (err error) |
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34 |
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func Pipe2(p []int, flags int) (err error) { |
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if len(p) != 2 { |
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37 |
return EINVAL |
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38 |
} |
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39 |
var pp [2]_C_int |
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err = pipe2(&pp, flags) |
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p[0] = int(pp[0]) |
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p[1] = int(pp[1]) |
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43 |
return |
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44 |
} |
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45 |
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46 |
// Underlying system call writes to newoffset via pointer. |
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47 |
// Implemented in assembly to avoid allocation. |
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48 |
func seek(fd int, offset int64, whence int) (newoffset int64, err syscall.Errno) |
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49 |
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func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { |
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newoffset, errno := seek(fd, offset, whence) |
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52 |
if errno != 0 { |
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53 |
return 0, errno |
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54 |
} |
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55 |
return newoffset, nil |
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56 |
} |
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57 |
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58 |
//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) |
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59 |
//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) |
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60 |
//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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61 |
//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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62 |
//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 |
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63 |
//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 |
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64 |
//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) |
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65 |
//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) |
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66 |
//sysnb socket(domain int, typ int, proto int) (fd int, err error) |
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67 |
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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68 |
//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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69 |
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) |
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70 |
//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) |
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71 |
//sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) |
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72 |
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) |
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73 |
//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) |
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74 |
|
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75 |
// 64-bit file system and 32-bit uid calls |
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76 |
// (16-bit uid calls are not always supported in newer kernels) |
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77 |
//sys Dup2(oldfd int, newfd int) (err error) |
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78 |
//sysnb EpollCreate(size int) (fd int, err error) |
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79 |
//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) |
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80 |
//sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 |
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81 |
//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 |
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82 |
//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 |
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83 |
//sysnb Getegid() (egid int) = SYS_GETEGID32 |
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84 |
//sysnb Geteuid() (euid int) = SYS_GETEUID32 |
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85 |
//sysnb Getgid() (gid int) = SYS_GETGID32 |
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86 |
//sysnb Getuid() (uid int) = SYS_GETUID32 |
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87 |
//sysnb InotifyInit() (fd int, err error) |
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88 |
//sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 |
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89 |
//sys Listen(s int, n int) (err error) |
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90 |
//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 |
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91 |
//sys Pause() (err error) |
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92 |
//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 |
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93 |
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT |
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94 |
//sys Setfsgid(gid int) (err error) = SYS_SETFSGID32 |
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95 |
//sys Setfsuid(uid int) (err error) = SYS_SETFSUID32 |
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96 |
//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 |
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97 |
//sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 |
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98 |
//sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 |
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99 |
//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 |
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100 |
//sys Shutdown(fd int, how int) (err error) |
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101 |
//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) |
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102 |
//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 |
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103 |
//sys Ustat(dev int, ubuf *Ustat_t) (err error) |
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104 |
|
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105 |
//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) |
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106 |
//sysnb Gettimeofday(tv *Timeval) (err error) |
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107 |
|
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108 |
func Time(t *Time_t) (Time_t, error) { |
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109 |
var tv Timeval |
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110 |
err := Gettimeofday(&tv) |
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111 |
if err != nil { |
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112 |
return 0, err |
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|
113 |
} |
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|
114 |
if t != nil { |
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|
115 |
*t = Time_t(tv.Sec) |
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|
116 |
} |
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117 |
return Time_t(tv.Sec), nil |
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118 |
} |
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119 |
|
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|
120 |
func Utime(path string, buf *Utimbuf) error { |
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|
121 |
tv := []Timeval{ |
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|
122 |
{Sec: buf.Actime}, |
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|
123 |
{Sec: buf.Modtime}, |
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|
124 |
} |
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|
125 |
return Utimes(path, tv) |
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|
126 |
} |
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127 |
|
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128 |
//sys utimes(path string, times *[2]Timeval) (err error) |
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129 |
|
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130 |
//sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 |
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131 |
//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 |
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132 |
//sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 |
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|
133 |
//sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 |
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|
134 |
|
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|
135 |
func Fadvise(fd int, offset int64, length int64, advice int) (err error) { |
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|
136 |
_, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32)) |
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|
137 |
if e1 != 0 { |
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|
138 |
err = errnoErr(e1) |
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|
139 |
} |
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|
140 |
return |
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|
141 |
} |
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|
142 |
|
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|
143 |
//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) |
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|
144 |
|
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|
145 |
func Fstatfs(fd int, buf *Statfs_t) (err error) { |
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|
146 |
_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) |
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|
147 |
if e != 0 { |
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|
148 |
err = e |
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|
149 |
} |
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|
150 |
return |
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|
151 |
} |
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|
152 |
|
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|
153 |
func Statfs(path string, buf *Statfs_t) (err error) { |
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|
154 |
pathp, err := BytePtrFromString(path) |
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|
155 |
if err != nil { |
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|
156 |
return err |
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|
157 |
} |
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|
158 |
_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) |
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|
159 |
if e != 0 { |
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|
160 |
err = e |
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|
161 |
} |
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|
162 |
return |
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changeset
|
163 |
} |
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|
164 |
|
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|
165 |
func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { |
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|
166 |
page := uintptr(offset / 4096) |
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|
167 |
if offset != int64(page)*4096 { |
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|
168 |
return 0, EINVAL |
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changeset
|
169 |
} |
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|
170 |
return mmap2(addr, length, prot, flags, fd, page) |
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|
171 |
} |
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|
172 |
|
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|
173 |
type rlimit32 struct { |
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|
174 |
Cur uint32 |
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|
175 |
Max uint32 |
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|
176 |
} |
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|
177 |
|
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|
178 |
//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT |
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changeset
|
179 |
|
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|
180 |
const rlimInf32 = ^uint32(0) |
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|
181 |
const rlimInf64 = ^uint64(0) |
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|
182 |
|
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|
183 |
func Getrlimit(resource int, rlim *Rlimit) (err error) { |
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|
184 |
err = prlimit(0, resource, nil, rlim) |
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|
185 |
if err != ENOSYS { |
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|
186 |
return err |
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changeset
|
187 |
} |
2a9ec03fe5a1
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|
188 |
|
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|
189 |
rl := rlimit32{} |
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changeset
|
190 |
err = getrlimit(resource, &rl) |
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changeset
|
191 |
if err != nil { |
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changeset
|
192 |
return |
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changeset
|
193 |
} |
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changeset
|
194 |
|
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|
195 |
if rl.Cur == rlimInf32 { |
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|
196 |
rlim.Cur = rlimInf64 |
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changeset
|
197 |
} else { |
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|
198 |
rlim.Cur = uint64(rl.Cur) |
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|
199 |
} |
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changeset
|
200 |
|
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changeset
|
201 |
if rl.Max == rlimInf32 { |
2a9ec03fe5a1
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|
202 |
rlim.Max = rlimInf64 |
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changeset
|
203 |
} else { |
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|
204 |
rlim.Max = uint64(rl.Max) |
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|
205 |
} |
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changeset
|
206 |
return |
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changeset
|
207 |
} |
2a9ec03fe5a1
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changeset
|
208 |
|
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changeset
|
209 |
//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
210 |
|
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
211 |
func Setrlimit(resource int, rlim *Rlimit) (err error) { |
2a9ec03fe5a1
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|
212 |
err = prlimit(0, resource, rlim, nil) |
2a9ec03fe5a1
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|
213 |
if err != ENOSYS { |
2a9ec03fe5a1
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changeset
|
214 |
return err |
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changeset
|
215 |
} |
2a9ec03fe5a1
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changeset
|
216 |
|
2a9ec03fe5a1
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changeset
|
217 |
rl := rlimit32{} |
2a9ec03fe5a1
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changeset
|
218 |
if rlim.Cur == rlimInf64 { |
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|
219 |
rl.Cur = rlimInf32 |
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|
220 |
} else if rlim.Cur < uint64(rlimInf32) { |
2a9ec03fe5a1
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|
221 |
rl.Cur = uint32(rlim.Cur) |
2a9ec03fe5a1
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changeset
|
222 |
} else { |
2a9ec03fe5a1
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changeset
|
223 |
return EINVAL |
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changeset
|
224 |
} |
2a9ec03fe5a1
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changeset
|
225 |
if rlim.Max == rlimInf64 { |
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|
226 |
rl.Max = rlimInf32 |
2a9ec03fe5a1
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|
227 |
} else if rlim.Max < uint64(rlimInf32) { |
2a9ec03fe5a1
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|
228 |
rl.Max = uint32(rlim.Max) |
2a9ec03fe5a1
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|
229 |
} else { |
2a9ec03fe5a1
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changeset
|
230 |
return EINVAL |
2a9ec03fe5a1
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diff
changeset
|
231 |
} |
2a9ec03fe5a1
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changeset
|
232 |
|
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|
233 |
return setrlimit(resource, &rl) |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
234 |
} |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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changeset
|
235 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
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|
236 |
func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } |
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237 |
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238 |
func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } |
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239 |
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240 |
func (iov *Iovec) SetLen(length int) { |
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241 |
iov.Len = uint32(length) |
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242 |
} |
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243 |
|
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244 |
func (msghdr *Msghdr) SetControllen(length int) { |
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msghdr.Controllen = uint32(length) |
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246 |
} |
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247 |
|
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248 |
func (cmsg *Cmsghdr) SetLen(length int) { |
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249 |
cmsg.Len = uint32(length) |
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250 |
} |
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251 |
|
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252 |
//sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) |
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253 |
|
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254 |
func Poll(fds []PollFd, timeout int) (n int, err error) { |
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255 |
if len(fds) == 0 { |
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256 |
return poll(nil, 0, timeout) |
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257 |
} |
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258 |
return poll(&fds[0], len(fds), timeout) |
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259 |
} |