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