syscall_linux_arm.go raw
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
7 package unix
8
9 import (
10 "unsafe"
11 )
12
13 func setTimespec(sec, nsec int64) Timespec {
14 return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
15 }
16
17 func setTimeval(sec, usec int64) Timeval {
18 return Timeval{Sec: int32(sec), Usec: int32(usec)}
19 }
20
21 func 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
72 func 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
84 func 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
99 func 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
109 func 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
117 func 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
129 func 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
137 type rlimit32 struct {
138 Cur uint32
139 Max uint32
140 }
141
142 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT
143
144 const rlimInf32 = ^uint32(0)
145 const rlimInf64 = ^uint64(0)
146
147 func 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
173 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) }
174
175 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) }
176
177 func (iov *Iovec) SetLen(length int) {
178 iov.Len = uint32(length)
179 }
180
181 func (msghdr *Msghdr) SetControllen(length int) {
182 msghdr.Controllen = uint32(length)
183 }
184
185 func (msghdr *Msghdr) SetIovlen(length int) {
186 msghdr.Iovlen = uint32(length)
187 }
188
189 func (cmsg *Cmsghdr) SetLen(length int) {
190 cmsg.Len = uint32(length)
191 }
192
193 func (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
199 func 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
207 func 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 }
217