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15c0b25d AP |
1 | // Copyright 2009 The Go Authors. All rights reserved. |
2 | // Use of this source code is governed by a BSD-style | |
3 | // license that can be found in the LICENSE file. | |
4 | ||
5 | // +build arm,linux | |
6 | ||
7 | package unix | |
8 | ||
9 | import ( | |
10 | "syscall" | |
11 | "unsafe" | |
12 | ) | |
13 | ||
14 | func setTimespec(sec, nsec int64) Timespec { | |
15 | return Timespec{Sec: int32(sec), Nsec: int32(nsec)} | |
16 | } | |
17 | ||
18 | func setTimeval(sec, usec int64) Timeval { | |
19 | return Timeval{Sec: int32(sec), Usec: int32(usec)} | |
20 | } | |
21 | ||
107c1cdb ND |
22 | //sysnb pipe(p *[2]_C_int) (err error) |
23 | ||
15c0b25d AP |
24 | func Pipe(p []int) (err error) { |
25 | if len(p) != 2 { | |
26 | return EINVAL | |
27 | } | |
28 | var pp [2]_C_int | |
107c1cdb | 29 | // Try pipe2 first for Android O, then try pipe for kernel 2.6.23. |
15c0b25d | 30 | err = pipe2(&pp, 0) |
107c1cdb ND |
31 | if err == ENOSYS { |
32 | err = pipe(&pp) | |
33 | } | |
15c0b25d AP |
34 | p[0] = int(pp[0]) |
35 | p[1] = int(pp[1]) | |
36 | return | |
37 | } | |
38 | ||
39 | //sysnb pipe2(p *[2]_C_int, flags int) (err error) | |
40 | ||
41 | func Pipe2(p []int, flags int) (err error) { | |
42 | if len(p) != 2 { | |
43 | return EINVAL | |
44 | } | |
45 | var pp [2]_C_int | |
46 | err = pipe2(&pp, flags) | |
47 | p[0] = int(pp[0]) | |
48 | p[1] = int(pp[1]) | |
49 | return | |
50 | } | |
51 | ||
52 | // Underlying system call writes to newoffset via pointer. | |
53 | // Implemented in assembly to avoid allocation. | |
54 | func seek(fd int, offset int64, whence int) (newoffset int64, err syscall.Errno) | |
55 | ||
56 | func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { | |
57 | newoffset, errno := seek(fd, offset, whence) | |
58 | if errno != 0 { | |
59 | return 0, errno | |
60 | } | |
61 | return newoffset, nil | |
62 | } | |
63 | ||
64 | //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) | |
65 | //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) | |
66 | //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) | |
67 | //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) | |
68 | //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 | |
69 | //sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 | |
70 | //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) | |
71 | //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) | |
72 | //sysnb socket(domain int, typ int, proto int) (fd int, err error) | |
73 | //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) | |
74 | //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) | |
75 | //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) | |
76 | //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) | |
77 | //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) | |
78 | //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) | |
79 | //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) | |
80 | ||
81 | // 64-bit file system and 32-bit uid calls | |
82 | // (16-bit uid calls are not always supported in newer kernels) | |
83 | //sys Dup2(oldfd int, newfd int) (err error) | |
84 | //sysnb EpollCreate(size int) (fd int, err error) | |
85 | //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) | |
86 | //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 | |
87 | //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 | |
88 | //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 | |
89 | //sysnb Getegid() (egid int) = SYS_GETEGID32 | |
90 | //sysnb Geteuid() (euid int) = SYS_GETEUID32 | |
91 | //sysnb Getgid() (gid int) = SYS_GETGID32 | |
92 | //sysnb Getuid() (uid int) = SYS_GETUID32 | |
93 | //sysnb InotifyInit() (fd int, err error) | |
94 | //sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 | |
95 | //sys Listen(s int, n int) (err error) | |
96 | //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 | |
97 | //sys Pause() (err error) | |
107c1cdb | 98 | //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) |
15c0b25d AP |
99 | //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 |
100 | //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT | |
101 | //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32 | |
102 | //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32 | |
103 | //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 | |
104 | //sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 | |
105 | //sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 | |
106 | //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 | |
107 | //sys Shutdown(fd int, how int) (err error) | |
108 | //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) | |
109 | //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 | |
110 | //sys Ustat(dev int, ubuf *Ustat_t) (err error) | |
111 | ||
112 | //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) | |
113 | //sysnb Gettimeofday(tv *Timeval) (err error) | |
114 | ||
115 | func Time(t *Time_t) (Time_t, error) { | |
116 | var tv Timeval | |
117 | err := Gettimeofday(&tv) | |
118 | if err != nil { | |
119 | return 0, err | |
120 | } | |
121 | if t != nil { | |
122 | *t = Time_t(tv.Sec) | |
123 | } | |
124 | return Time_t(tv.Sec), nil | |
125 | } | |
126 | ||
127 | func Utime(path string, buf *Utimbuf) error { | |
128 | tv := []Timeval{ | |
129 | {Sec: buf.Actime}, | |
130 | {Sec: buf.Modtime}, | |
131 | } | |
132 | return Utimes(path, tv) | |
133 | } | |
134 | ||
135 | //sys utimes(path string, times *[2]Timeval) (err error) | |
136 | ||
137 | //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 | |
138 | //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 | |
139 | //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 | |
140 | //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 | |
141 | ||
142 | func Fadvise(fd int, offset int64, length int64, advice int) (err error) { | |
143 | _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32)) | |
144 | if e1 != 0 { | |
145 | err = errnoErr(e1) | |
146 | } | |
147 | return | |
148 | } | |
149 | ||
150 | //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) | |
151 | ||
152 | func Fstatfs(fd int, buf *Statfs_t) (err error) { | |
153 | _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) | |
154 | if e != 0 { | |
155 | err = e | |
156 | } | |
157 | return | |
158 | } | |
159 | ||
160 | func Statfs(path string, buf *Statfs_t) (err error) { | |
161 | pathp, err := BytePtrFromString(path) | |
162 | if err != nil { | |
163 | return err | |
164 | } | |
165 | _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) | |
166 | if e != 0 { | |
167 | err = e | |
168 | } | |
169 | return | |
170 | } | |
171 | ||
172 | func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { | |
173 | page := uintptr(offset / 4096) | |
174 | if offset != int64(page)*4096 { | |
175 | return 0, EINVAL | |
176 | } | |
177 | return mmap2(addr, length, prot, flags, fd, page) | |
178 | } | |
179 | ||
180 | type rlimit32 struct { | |
181 | Cur uint32 | |
182 | Max uint32 | |
183 | } | |
184 | ||
185 | //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT | |
186 | ||
187 | const rlimInf32 = ^uint32(0) | |
188 | const rlimInf64 = ^uint64(0) | |
189 | ||
190 | func Getrlimit(resource int, rlim *Rlimit) (err error) { | |
191 | err = prlimit(0, resource, nil, rlim) | |
192 | if err != ENOSYS { | |
193 | return err | |
194 | } | |
195 | ||
196 | rl := rlimit32{} | |
197 | err = getrlimit(resource, &rl) | |
198 | if err != nil { | |
199 | return | |
200 | } | |
201 | ||
202 | if rl.Cur == rlimInf32 { | |
203 | rlim.Cur = rlimInf64 | |
204 | } else { | |
205 | rlim.Cur = uint64(rl.Cur) | |
206 | } | |
207 | ||
208 | if rl.Max == rlimInf32 { | |
209 | rlim.Max = rlimInf64 | |
210 | } else { | |
211 | rlim.Max = uint64(rl.Max) | |
212 | } | |
213 | return | |
214 | } | |
215 | ||
216 | //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT | |
217 | ||
218 | func Setrlimit(resource int, rlim *Rlimit) (err error) { | |
219 | err = prlimit(0, resource, rlim, nil) | |
220 | if err != ENOSYS { | |
221 | return err | |
222 | } | |
223 | ||
224 | rl := rlimit32{} | |
225 | if rlim.Cur == rlimInf64 { | |
226 | rl.Cur = rlimInf32 | |
227 | } else if rlim.Cur < uint64(rlimInf32) { | |
228 | rl.Cur = uint32(rlim.Cur) | |
229 | } else { | |
230 | return EINVAL | |
231 | } | |
232 | if rlim.Max == rlimInf64 { | |
233 | rl.Max = rlimInf32 | |
234 | } else if rlim.Max < uint64(rlimInf32) { | |
235 | rl.Max = uint32(rlim.Max) | |
236 | } else { | |
237 | return EINVAL | |
238 | } | |
239 | ||
240 | return setrlimit(resource, &rl) | |
241 | } | |
242 | ||
243 | func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } | |
244 | ||
245 | func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } | |
246 | ||
247 | func (iov *Iovec) SetLen(length int) { | |
248 | iov.Len = uint32(length) | |
249 | } | |
250 | ||
251 | func (msghdr *Msghdr) SetControllen(length int) { | |
252 | msghdr.Controllen = uint32(length) | |
253 | } | |
254 | ||
255 | func (cmsg *Cmsghdr) SetLen(length int) { | |
256 | cmsg.Len = uint32(length) | |
257 | } | |
258 | ||
259 | //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) | |
260 | ||
261 | func Poll(fds []PollFd, timeout int) (n int, err error) { | |
262 | if len(fds) == 0 { | |
263 | return poll(nil, 0, timeout) | |
264 | } | |
265 | return poll(&fds[0], len(fds), timeout) | |
266 | } | |
107c1cdb ND |
267 | |
268 | //sys armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE | |
269 | ||
270 | func SyncFileRange(fd int, off int64, n int64, flags int) error { | |
271 | // The sync_file_range and arm_sync_file_range syscalls differ only in the | |
272 | // order of their arguments. | |
273 | return armSyncFileRange(fd, flags, off, n) | |
274 | } |