// Copyright 2020 The gVisor Authors. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // Package vfs2 provides syscall implementations that use VFS2. package vfs2 import ( "gvisor.dev/gvisor/pkg/sentry/syscalls" "gvisor.dev/gvisor/pkg/sentry/syscalls/linux" ) // Override syscall table to add syscalls implementations from this package. func Override() { // Override AMD64. s := linux.AMD64 s.Table[0] = syscalls.Supported("read", Read) s.Table[1] = syscalls.Supported("write", Write) s.Table[2] = syscalls.Supported("open", Open) s.Table[3] = syscalls.Supported("close", Close) s.Table[4] = syscalls.Supported("stat", Stat) s.Table[5] = syscalls.Supported("fstat", Fstat) s.Table[6] = syscalls.Supported("lstat", Lstat) s.Table[7] = syscalls.Supported("poll", Poll) s.Table[8] = syscalls.Supported("lseek", Lseek) s.Table[9] = syscalls.Supported("mmap", Mmap) s.Table[16] = syscalls.Supported("ioctl", Ioctl) s.Table[17] = syscalls.Supported("pread64", Pread64) s.Table[18] = syscalls.Supported("pwrite64", Pwrite64) s.Table[19] = syscalls.Supported("readv", Readv) s.Table[20] = syscalls.Supported("writev", Writev) s.Table[21] = syscalls.Supported("access", Access) s.Table[22] = syscalls.Supported("pipe", Pipe) s.Table[23] = syscalls.Supported("select", Select) s.Table[32] = syscalls.Supported("dup", Dup) s.Table[33] = syscalls.Supported("dup2", Dup2) delete(s.Table, 40) // sendfile s.Table[41] = syscalls.Supported("socket", Socket) s.Table[42] = syscalls.Supported("connect", Connect) s.Table[43] = syscalls.Supported("accept", Accept) s.Table[44] = syscalls.Supported("sendto", SendTo) s.Table[45] = syscalls.Supported("recvfrom", RecvFrom) s.Table[46] = syscalls.Supported("sendmsg", SendMsg) s.Table[47] = syscalls.Supported("recvmsg", RecvMsg) s.Table[48] = syscalls.Supported("shutdown", Shutdown) s.Table[49] = syscalls.Supported("bind", Bind) s.Table[50] = syscalls.Supported("listen", Listen) s.Table[51] = syscalls.Supported("getsockname", GetSockName) s.Table[52] = syscalls.Supported("getpeername", GetPeerName) s.Table[53] = syscalls.Supported("socketpair", SocketPair) s.Table[54] = syscalls.Supported("setsockopt", SetSockOpt) s.Table[55] = syscalls.Supported("getsockopt", GetSockOpt) s.Table[59] = syscalls.Supported("execve", Execve) s.Table[72] = syscalls.Supported("fcntl", Fcntl) s.Table[73] = syscalls.Supported("fcntl", Flock) s.Table[74] = syscalls.Supported("fsync", Fsync) s.Table[75] = syscalls.Supported("fdatasync", Fdatasync) s.Table[76] = syscalls.Supported("truncate", Truncate) s.Table[77] = syscalls.Supported("ftruncate", Ftruncate) s.Table[78] = syscalls.Supported("getdents", Getdents) s.Table[79] = syscalls.Supported("getcwd", Getcwd) s.Table[80] = syscalls.Supported("chdir", Chdir) s.Table[81] = syscalls.Supported("fchdir", Fchdir) s.Table[82] = syscalls.Supported("rename", Rename) s.Table[83] = syscalls.Supported("mkdir", Mkdir) s.Table[84] = syscalls.Supported("rmdir", Rmdir) s.Table[85] = syscalls.Supported("creat", Creat) s.Table[86] = syscalls.Supported("link", Link) s.Table[87] = syscalls.Supported("unlink", Unlink) s.Table[88] = syscalls.Supported("symlink", Symlink) s.Table[89] = syscalls.Supported("readlink", Readlink) s.Table[90] = syscalls.Supported("chmod", Chmod) s.Table[91] = syscalls.Supported("fchmod", Fchmod) s.Table[92] = syscalls.Supported("chown", Chown) s.Table[93] = syscalls.Supported("fchown", Fchown) s.Table[94] = syscalls.Supported("lchown", Lchown) s.Table[132] = syscalls.Supported("utime", Utime) s.Table[133] = syscalls.Supported("mknod", Mknod) s.Table[137] = syscalls.Supported("statfs", Statfs) s.Table[138] = syscalls.Supported("fstatfs", Fstatfs) s.Table[161] = syscalls.Supported("chroot", Chroot) s.Table[162] = syscalls.Supported("sync", Sync) s.Table[165] = syscalls.Supported("mount", Mount) s.Table[166] = syscalls.Supported("umount2", Umount2) delete(s.Table, 187) // readahead s.Table[188] = syscalls.Supported("setxattr", Setxattr) s.Table[189] = syscalls.Supported("lsetxattr", Lsetxattr) s.Table[190] = syscalls.Supported("fsetxattr", Fsetxattr) s.Table[191] = syscalls.Supported("getxattr", Getxattr) s.Table[192] = syscalls.Supported("lgetxattr", Lgetxattr) s.Table[193] = syscalls.Supported("fgetxattr", Fgetxattr) s.Table[194] = syscalls.Supported("listxattr", Listxattr) s.Table[195] = syscalls.Supported("llistxattr", Llistxattr) s.Table[196] = syscalls.Supported("flistxattr", Flistxattr) s.Table[197] = syscalls.Supported("removexattr", Removexattr) s.Table[198] = syscalls.Supported("lremovexattr", Lremovexattr) s.Table[199] = syscalls.Supported("fremovexattr", Fremovexattr) s.Table[209] = syscalls.PartiallySupported("io_submit", IoSubmit, "Generally supported with exceptions. User ring optimizations are not implemented.", []string{"gvisor.dev/issue/204"}) s.Table[213] = syscalls.Supported("epoll_create", EpollCreate) s.Table[217] = syscalls.Supported("getdents64", Getdents64) s.Table[221] = syscalls.PartiallySupported("fadvise64", Fadvise64, "The syscall is 'supported', but ignores all provided advice.", nil) s.Table[232] = syscalls.Supported("epoll_wait", EpollWait) s.Table[233] = syscalls.Supported("epoll_ctl", EpollCtl) s.Table[235] = syscalls.Supported("utimes", Utimes) s.Table[253] = syscalls.PartiallySupported("inotify_init", InotifyInit, "inotify events are only available inside the sandbox.", nil) s.Table[254] = syscalls.PartiallySupported("inotify_add_watch", InotifyAddWatch, "inotify events are only available inside the sandbox.", nil) s.Table[255] = syscalls.PartiallySupported("inotify_rm_watch", InotifyRmWatch, "inotify events are only available inside the sandbox.", nil) s.Table[257] = syscalls.Supported("openat", Openat) s.Table[258] = syscalls.Supported("mkdirat", Mkdirat) s.Table[259] = syscalls.Supported("mknodat", Mknodat) s.Table[260] = syscalls.Supported("fchownat", Fchownat) s.Table[261] = syscalls.Supported("futimesat", Futimesat) s.Table[262] = syscalls.Supported("newfstatat", Newfstatat) s.Table[263] = syscalls.Supported("unlinkat", Unlinkat) s.Table[264] = syscalls.Supported("renameat", Renameat) s.Table[265] = syscalls.Supported("linkat", Linkat) s.Table[266] = syscalls.Supported("symlinkat", Symlinkat) s.Table[267] = syscalls.Supported("readlinkat", Readlinkat) s.Table[268] = syscalls.Supported("fchmodat", Fchmodat) s.Table[269] = syscalls.Supported("faccessat", Faccessat) s.Table[270] = syscalls.Supported("pselect", Pselect) s.Table[271] = syscalls.Supported("ppoll", Ppoll) s.Table[275] = syscalls.Supported("splice", Splice) s.Table[276] = syscalls.Supported("tee", Tee) s.Table[277] = syscalls.Supported("sync_file_range", SyncFileRange) s.Table[280] = syscalls.Supported("utimensat", Utimensat) s.Table[281] = syscalls.Supported("epoll_pwait", EpollPwait) s.Table[282] = syscalls.Supported("signalfd", Signalfd) s.Table[283] = syscalls.Supported("timerfd_create", TimerfdCreate) s.Table[284] = syscalls.Supported("eventfd", Eventfd) delete(s.Table, 285) // fallocate s.Table[286] = syscalls.Supported("timerfd_settime", TimerfdSettime) s.Table[287] = syscalls.Supported("timerfd_gettime", TimerfdGettime) s.Table[288] = syscalls.Supported("accept4", Accept4) s.Table[289] = syscalls.Supported("signalfd4", Signalfd4) s.Table[290] = syscalls.Supported("eventfd2", Eventfd2) s.Table[291] = syscalls.Supported("epoll_create1", EpollCreate1) s.Table[292] = syscalls.Supported("dup3", Dup3) s.Table[293] = syscalls.Supported("pipe2", Pipe2) s.Table[294] = syscalls.PartiallySupported("inotify_init1", InotifyInit1, "inotify events are only available inside the sandbox.", nil) s.Table[295] = syscalls.Supported("preadv", Preadv) s.Table[296] = syscalls.Supported("pwritev", Pwritev) s.Table[299] = syscalls.Supported("recvmmsg", RecvMMsg) s.Table[306] = syscalls.Supported("syncfs", Syncfs) s.Table[307] = syscalls.Supported("sendmmsg", SendMMsg) s.Table[316] = syscalls.Supported("renameat2", Renameat2) s.Table[319] = syscalls.Supported("memfd_create", MemfdCreate) s.Table[322] = syscalls.Supported("execveat", Execveat) s.Table[327] = syscalls.Supported("preadv2", Preadv2) s.Table[328] = syscalls.Supported("pwritev2", Pwritev2) s.Table[332] = syscalls.Supported("statx", Statx) s.Init() // Override ARM64. s = linux.ARM64 s.Table[63] = syscalls.Supported("read", Read) s.Init() }