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 amd64 && linux
6
7package unix
8
9//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
10//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
11//sys Fchown(fd int, uid int, gid int) (err error)
12//sys Fstat(fd int, stat *Stat_t) (err error)
13//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
14//sys Fstatfs(fd int, buf *Statfs_t) (err error)
15//sys Ftruncate(fd int, length int64) (err error)
16//sysnb Getegid() (egid int)
17//sysnb Geteuid() (euid int)
18//sysnb Getgid() (gid int)
19//sysnb Getrlimit(resource int, rlim *Rlimit) (err error)
20//sysnb Getuid() (uid int)
21//sys Ioperm(from int, num int, on int) (err error)
22//sys Iopl(level int) (err error)
23//sys Lchown(path string, uid int, gid int) (err error)
24//sys Listen(s int, n int) (err error)
25
26func Lstat(path string, stat *Stat_t) (err error) {
27 return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
28}
29
30//sys MemfdSecret(flags int) (fd int, err error)
31//sys Pause() (err error)
32//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
33//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
34//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
35//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
36
37func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
38 var ts *Timespec
39 if timeout != nil {
40 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
41 }
42 return pselect6(nfd, r, w, e, ts, nil)
43}
44
45//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
46//sys setfsgid(gid int) (prev int, err error)
47//sys setfsuid(uid int) (prev int, err error)
48//sys Shutdown(fd int, how int) (err error)
49//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
50
51func Stat(path string, stat *Stat_t) (err error) {
52 // Use fstatat, because Android's seccomp policy blocks stat.
53 return Fstatat(AT_FDCWD, path, stat, 0)
54}
55
56//sys Statfs(path string, buf *Statfs_t) (err error)
57//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
58//sys Truncate(path string, length int64) (err error)
59//sys Ustat(dev int, ubuf *Ustat_t) (err error)
60//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
61//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
62//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
63//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
64//sysnb setgroups(n int, list *_Gid_t) (err error)
65//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
66//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
67//sysnb socket(domain int, typ int, proto int) (fd int, err error)
68//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
69//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
70//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
71//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
72//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
73//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
74//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
75//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
76
77//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
78
79func Gettimeofday(tv *Timeval) (err error) {
80 errno := gettimeofday(tv)
81 if errno != 0 {
82 return errno
83 }
84 return nil
85}
86
87func Time(t *Time_t) (tt Time_t, err error) {
88 var tv Timeval
89 errno := gettimeofday(&tv)
90 if errno != 0 {
91 return 0, errno
92 }
93 if t != nil {
94 *t = Time_t(tv.Sec)
95 }
96 return Time_t(tv.Sec), nil
97}
98
99//sys Utime(path string, buf *Utimbuf) (err error)
100//sys utimes(path string, times *[2]Timeval) (err error)
101
102func setTimespec(sec, nsec int64) Timespec {
103 return Timespec{Sec: sec, Nsec: nsec}
104}
105
106func setTimeval(sec, usec int64) Timeval {
107 return Timeval{Sec: sec, Usec: usec}
108}
109
110func (r *PtraceRegs) PC() uint64 { return r.Rip }
111
112func (r *PtraceRegs) SetPC(pc uint64) { r.Rip = pc }
113
114func (iov *Iovec) SetLen(length int) {
115 iov.Len = uint64(length)
116}
117
118func (msghdr *Msghdr) SetControllen(length int) {
119 msghdr.Controllen = uint64(length)
120}
121
122func (msghdr *Msghdr) SetIovlen(length int) {
123 msghdr.Iovlen = uint64(length)
124}
125
126func (cmsg *Cmsghdr) SetLen(length int) {
127 cmsg.Len = uint64(length)
128}
129
130func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
131 rsa.Service_name_len = uint64(length)
132}
133
134//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
135
136func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
137 cmdlineLen := len(cmdline)
138 if cmdlineLen > 0 {
139 // Account for the additional NULL byte added by
140 // BytePtrFromString in kexecFileLoad. The kexec_file_load
141 // syscall expects a NULL-terminated string.
142 cmdlineLen++
143 }
144 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
145}