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//go:build arm && linux
6// +build arm,linux
7
8package unix
9
10import (
11 "unsafe"
12)
13
14func setTimespec(sec, nsec int64) Timespec {
15 return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
16}
17
18func setTimeval(sec, usec int64) Timeval {
19 return Timeval{Sec: int32(sec), Usec: int32(usec)}
20}
21
22func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
23 newoffset, errno := seek(fd, offset, whence)
24 if errno != 0 {
25 return 0, errno
26 }
27 return newoffset, nil
28}
29
30//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
31//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
32//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
33//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
34//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
35//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
36//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
37//sysnb socket(domain int, typ int, proto int) (fd int, err error)
38//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
39//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
40//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
41//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
42//sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error)
43//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
44//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
45
46// 64-bit file system and 32-bit uid calls
47// (16-bit uid calls are not always supported in newer kernels)
48//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
49//sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32
50//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
51//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
52//sysnb Getegid() (egid int) = SYS_GETEGID32
53//sysnb Geteuid() (euid int) = SYS_GETEUID32
54//sysnb Getgid() (gid int) = SYS_GETGID32
55//sysnb Getuid() (uid int) = SYS_GETUID32
56//sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32
57//sys Listen(s int, n int) (err error)
58//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
59//sys Pause() (err error)
60//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
61//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
62//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
63//sys setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32
64//sys setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32
65//sys Shutdown(fd int, how int) (err error)
66//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
67//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
68//sys Ustat(dev int, ubuf *Ustat_t) (err error)
69
70//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
71//sysnb Gettimeofday(tv *Timeval) (err error)
72
73func Time(t *Time_t) (Time_t, error) {
74 var tv Timeval
75 err := Gettimeofday(&tv)
76 if err != nil {
77 return 0, err
78 }
79 if t != nil {
80 *t = Time_t(tv.Sec)
81 }
82 return Time_t(tv.Sec), nil
83}
84
85func Utime(path string, buf *Utimbuf) error {
86 tv := []Timeval{
87 {Sec: buf.Actime},
88 {Sec: buf.Modtime},
89 }
90 return Utimes(path, tv)
91}
92
93//sys utimes(path string, times *[2]Timeval) (err error)
94
95//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
96//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
97//sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
98//sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
99
100func Fadvise(fd int, offset int64, length int64, advice int) (err error) {
101 _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32))
102 if e1 != 0 {
103 err = errnoErr(e1)
104 }
105 return
106}
107
108//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
109
110func Fstatfs(fd int, buf *Statfs_t) (err error) {
111 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
112 if e != 0 {
113 err = e
114 }
115 return
116}
117
118func Statfs(path string, buf *Statfs_t) (err error) {
119 pathp, err := BytePtrFromString(path)
120 if err != nil {
121 return err
122 }
123 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
124 if e != 0 {
125 err = e
126 }
127 return
128}
129
130func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
131 page := uintptr(offset / 4096)
132 if offset != int64(page)*4096 {
133 return 0, EINVAL
134 }
135 return mmap2(addr, length, prot, flags, fd, page)
136}
137
138type rlimit32 struct {
139 Cur uint32
140 Max uint32
141}
142
143//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT
144
145const rlimInf32 = ^uint32(0)
146const rlimInf64 = ^uint64(0)
147
148func Getrlimit(resource int, rlim *Rlimit) (err error) {
149 err = Prlimit(0, resource, nil, rlim)
150 if err != ENOSYS {
151 return err
152 }
153
154 rl := rlimit32{}
155 err = getrlimit(resource, &rl)
156 if err != nil {
157 return
158 }
159
160 if rl.Cur == rlimInf32 {
161 rlim.Cur = rlimInf64
162 } else {
163 rlim.Cur = uint64(rl.Cur)
164 }
165
166 if rl.Max == rlimInf32 {
167 rlim.Max = rlimInf64
168 } else {
169 rlim.Max = uint64(rl.Max)
170 }
171 return
172}
173
174func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) }
175
176func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) }
177
178func (iov *Iovec) SetLen(length int) {
179 iov.Len = uint32(length)
180}
181
182func (msghdr *Msghdr) SetControllen(length int) {
183 msghdr.Controllen = uint32(length)
184}
185
186func (msghdr *Msghdr) SetIovlen(length int) {
187 msghdr.Iovlen = uint32(length)
188}
189
190func (cmsg *Cmsghdr) SetLen(length int) {
191 cmsg.Len = uint32(length)
192}
193
194func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
195 rsa.Service_name_len = uint32(length)
196}
197
198//sys armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE
199
200func SyncFileRange(fd int, off int64, n int64, flags int) error {
201 // The sync_file_range and arm_sync_file_range syscalls differ only in the
202 // order of their arguments.
203 return armSyncFileRange(fd, flags, off, n)
204}
205
206//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
207
208func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
209 cmdlineLen := len(cmdline)
210 if cmdlineLen > 0 {
211 // Account for the additional NULL byte added by
212 // BytePtrFromString in kexecFileLoad. The kexec_file_load
213 // syscall expects a NULL-terminated string.
214 cmdlineLen++
215 }
216 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
217}