Linux/amd64

This table is a reference of linux syscalls for the amd64 architecture and their compatibility status in gVisor. gVisor does not support all syscalls and some syscalls may have a partial implementation.

This page is automatically generated from the source code.

Of 350 syscalls, 270 syscalls have a full or partial implementation. There are currently 80 unsupported syscalls.

# Name Support Notes
0 read Full Support Fully Supported.
1 write Full Support Fully Supported.
2 open Full Support Fully Supported.
3 close Full Support Fully Supported.
4 stat Full Support Fully Supported.
5 fstat Full Support Fully Supported.
6 lstat Full Support Fully Supported.
7 poll Full Support Fully Supported.
8 lseek Full Support Fully Supported.
9 mmap Full Support Fully Supported.
10 mprotect Full Support Fully Supported.
11 munmap Full Support Fully Supported.
12 brk Full Support Fully Supported.
13 rt_sigaction Full Support Fully Supported.
14 rt_sigprocmask Full Support Fully Supported.
15 rt_sigreturn Full Support Fully Supported.
16 ioctl Full Support Fully Supported.
17 pread64 Full Support Fully Supported.
18 pwrite64 Full Support Fully Supported.
19 readv Full Support Fully Supported.
20 writev Full Support Fully Supported.
21 access Full Support Fully Supported.
22 pipe Full Support Fully Supported.
23 select Full Support Fully Supported.
24 sched_yield Full Support Fully Supported.
25 mremap Full Support Fully Supported.
26 msync Partial Support Full data flush is not guaranteed at this time.
27 mincore Partial Support Stub implementation. The sandbox does not have access to this information. Reports all mapped pages are resident.
28 madvise Partial Support Options MADV_DONTNEED, MADV_DONTFORK are supported. Other advice is ignored.
29 shmget Partial Support Option SHM_HUGETLB is not supported.
30 shmat Partial Support Option SHM_RND is not supported.
31 shmctl Partial Support Options SHM_LOCK, SHM_UNLOCK are not supported.
32 dup Full Support Fully Supported.
33 dup2 Full Support Fully Supported.
34 pause Full Support Fully Supported.
35 nanosleep Full Support Fully Supported.
36 getitimer Full Support Fully Supported.
37 alarm Full Support Fully Supported.
38 setitimer Full Support Fully Supported.
39 getpid Full Support Fully Supported.
40 sendfile Full Support Fully Supported.
41 socket Full Support Fully Supported.
42 connect Full Support Fully Supported.
43 accept Full Support Fully Supported.
44 sendto Full Support Fully Supported.
45 recvfrom Full Support Fully Supported.
46 sendmsg Full Support Fully Supported.
47 recvmsg Full Support Fully Supported.
48 shutdown Full Support Fully Supported.
49 bind Full Support Fully Supported.
50 listen Full Support Fully Supported.
51 getsockname Full Support Fully Supported.
52 getpeername Full Support Fully Supported.
53 socketpair Full Support Fully Supported.
54 setsockopt Full Support Fully Supported.
55 getsockopt Full Support Fully Supported.
56 clone Partial Support Mount namespace (CLONE_NEWNS) not supported. Options CLONE_PARENT, CLONE_SYSVSEM not supported.
57 fork Full Support Fully Supported.
58 vfork Full Support Fully Supported.
59 execve Full Support Fully Supported.
60 exit Full Support Fully Supported.
61 wait4 Full Support Fully Supported.
62 kill Full Support Fully Supported.
63 uname Full Support Fully Supported.
64 semget Full Support Fully Supported.
65 semop Partial Support Option SEM_UNDO not supported.
66 semctl Full Support Fully Supported.
67 shmdt Full Support Fully Supported.
68 msgget Full Support Fully Supported.
69 msgsnd Full Support Fully Supported.
70 msgrcv Full Support Fully Supported.
71 msgctl Full Support Fully Supported.
72 fcntl Full Support Fully Supported.
73 flock Full Support Fully Supported.
74 fsync Full Support Fully Supported.
75 fdatasync Full Support Fully Supported.
76 truncate Full Support Fully Supported.
77 ftruncate Full Support Fully Supported.
78 getdents Full Support Fully Supported.
79 getcwd Full Support Fully Supported.
80 chdir Full Support Fully Supported.
81 fchdir Full Support Fully Supported.
82 rename Full Support Fully Supported.
83 mkdir Full Support Fully Supported.
84 rmdir Full Support Fully Supported.
85 creat Full Support Fully Supported.
90 chmod Full Support Fully Supported.
91 fchmod Full Support Fully Supported.
92 chown Full Support Fully Supported.
93 fchown Full Support Fully Supported.
94 lchown Full Support Fully Supported.
95 umask Full Support Fully Supported.
96 gettimeofday Full Support Fully Supported.
97 getrlimit Full Support Fully Supported.
98 getrusage Partial Support Fields ru_maxrss, ru_minflt, ru_majflt, ru_inblock, ru_oublock are not supported. Fields ru_utime and ru_stime have low precision.
99 sysinfo Partial Support Fields loads, sharedram, bufferram, totalswap, freeswap, totalhigh, freehigh not supported.
100 times Full Support Fully Supported.
101 ptrace Partial Support Options PTRACE_PEEKSIGINFO, PTRACE_SECCOMP_GET_FILTER not supported.
102 getuid Full Support Fully Supported.
103 syslog Partial Support Outputs a dummy message for security reasons.
104 getgid Full Support Fully Supported.
105 setuid Full Support Fully Supported.
106 setgid Full Support Fully Supported.
107 geteuid Full Support Fully Supported.
108 getegid Full Support Fully Supported.
109 setpgid Full Support Fully Supported.
110 getppid Full Support Fully Supported.
111 getpgrp Full Support Fully Supported.
112 setsid Full Support Fully Supported.
113 setreuid Full Support Fully Supported.
114 setregid Full Support Fully Supported.
115 getgroups Full Support Fully Supported.
116 setgroups Full Support Fully Supported.
117 setresuid Full Support Fully Supported.
118 getresuid Full Support Fully Supported.
119 setresgid Full Support Fully Supported.
120 getresgid Full Support Fully Supported.
121 getpgid Full Support Fully Supported.
122 setfsuid Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/260
123 setfsgid Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/260
124 getsid Full Support Fully Supported.
125 capget Full Support Fully Supported.
126 capset Full Support Fully Supported.
127 rt_sigpending Full Support Fully Supported.
128 rt_sigtimedwait Full Support Fully Supported.
129 rt_sigqueueinfo Full Support Fully Supported.
130 rt_sigsuspend Full Support Fully Supported.
131 sigaltstack Full Support Fully Supported.
132 utime Full Support Fully Supported.
133 mknod Full Support Fully Supported.
134 uselib Unimplemented Obsolete; Returns "invalid system call number".
135 personality Unimplemented Unable to change personality.; Returns "invalid argument".
136 ustat Unimplemented Needs filesystem support.; Returns "invalid system call number".
137 statfs Full Support Fully Supported.
138 fstatfs Full Support Fully Supported.
139 sysfs Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/165
140 getpriority Partial Support Stub implementation.
141 setpriority Partial Support Stub implementation.
142 sched_setparam Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_NICE; "invalid system call number" otherwise.
143 sched_getparam Partial Support Stub implementation.
144 sched_setscheduler Partial Support Stub implementation.
145 sched_getscheduler Partial Support Stub implementation.
146 sched_get_priority_max Partial Support Stub implementation.
147 sched_get_priority_min Partial Support Stub implementation.
148 sched_rr_get_interval Unimplemented Returns "operation not permitted".
149 mlock Partial Support Stub implementation. The sandbox lacks appropriate permissions.
150 munlock Partial Support Stub implementation. The sandbox lacks appropriate permissions.
151 mlockall Partial Support Stub implementation. The sandbox lacks appropriate permissions.
152 munlockall Partial Support Stub implementation. The sandbox lacks appropriate permissions.
153 vhangup Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_TTY_CONFIG; "invalid system call number" otherwise.
154 modify_ldt Unimplemented Returns "operation not permitted".
155 pivot_root Full Support Fully Supported.
156 sysctl Unimplemented Deprecated. Use /proc/sys instead.; Returns "operation not permitted".
157 prctl Partial Support Not all options are supported.
158 arch_prctl Partial Support Options ARCH_GET_GS, ARCH_SET_GS not supported.
159 adjtimex Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_TIME; "invalid system call number" otherwise.
160 setrlimit Partial Support Not all rlimits are enforced.
161 chroot Full Support Fully Supported.
162 sync Full Support Fully Supported.
163 acct Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_PACCT; "invalid system call number" otherwise.
164 settimeofday Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_TIME; "invalid system call number" otherwise.
165 mount Full Support Fully Supported.
166 umount2 Full Support Fully Supported.
167 swapon Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_ADMIN; "invalid system call number" otherwise.
168 swapoff Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_ADMIN; "invalid system call number" otherwise.
169 reboot Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_BOOT; "invalid system call number" otherwise.
170 sethostname Full Support Fully Supported.
171 setdomainname Full Support Fully Supported.
172 iopl Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_RAWIO; "invalid system call number" otherwise.
173 ioperm Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_RAWIO; "invalid system call number" otherwise.
174 create_module Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_MODULE; "invalid system call number" otherwise.
175 init_module Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_MODULE; "invalid system call number" otherwise.
176 delete_module Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_MODULE; "invalid system call number" otherwise.
177 get_kernel_syms Unimplemented Not supported in Linux > 2.6.; Returns "invalid system call number".
178 query_module Unimplemented Not supported in Linux > 2.6.; Returns "invalid system call number".
179 quotactl Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_ADMIN; "invalid system call number" otherwise.
180 nfsservctl Unimplemented Removed after Linux 3.1.; Returns "invalid system call number".
181 getpmsg Unimplemented Not implemented in Linux.; Returns "invalid system call number".
182 putpmsg Unimplemented Not implemented in Linux.; Returns "invalid system call number".
183 afs_syscall Unimplemented Not implemented in Linux.; Returns "invalid system call number".
184 tuxcall Unimplemented Not implemented in Linux.; Returns "invalid system call number".
185 security Unimplemented Not implemented in Linux.; Returns "invalid system call number".
186 gettid Full Support Fully Supported.
187 readahead Full Support Fully Supported.
188 setxattr Full Support Fully Supported.
189 lsetxattr Full Support Fully Supported.
190 fsetxattr Full Support Fully Supported.
191 getxattr Full Support Fully Supported.
192 lgetxattr Full Support Fully Supported.
193 fgetxattr Full Support Fully Supported.
194 listxattr Full Support Fully Supported.
195 llistxattr Full Support Fully Supported.
196 flistxattr Full Support Fully Supported.
197 removexattr Full Support Fully Supported.
198 lremovexattr Full Support Fully Supported.
199 fremovexattr Full Support Fully Supported.
200 tkill Full Support Fully Supported.
201 time Full Support Fully Supported.
202 futex Partial Support Robust futexes not supported.
203 sched_setaffinity Partial Support Stub implementation.
204 sched_getaffinity Partial Support Stub implementation.
205 set_thread_area Unimplemented Expected to return ENOSYS on 64-bit; Returns "invalid system call number".
206 io_setup Partial Support Generally supported with exceptions. User ring optimizations are not implemented.
See: https://gvisor.dev/issue/204
207 io_destroy Partial Support Generally supported with exceptions. User ring optimizations are not implemented.
See: https://gvisor.dev/issue/204
208 io_getevents Partial Support Generally supported with exceptions. User ring optimizations are not implemented.
See: https://gvisor.dev/issue/204
209 io_submit Partial Support Generally supported with exceptions. User ring optimizations are not implemented.
See: https://gvisor.dev/issue/204
210 io_cancel Partial Support Generally supported with exceptions. User ring optimizations are not implemented.
See: https://gvisor.dev/issue/204
211 get_thread_area Unimplemented Expected to return ENOSYS on 64-bit; Returns "invalid system call number".
212 lookup_dcookie Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_ADMIN; "invalid system call number" otherwise.
213 epoll_create Full Support Fully Supported.
214 epoll_ctl_old Unimplemented Deprecated.; Returns "invalid system call number".
215 epoll_wait_old Unimplemented Deprecated.; Returns "invalid system call number".
216 remap_file_pages Unimplemented Deprecated since Linux 3.16.; Returns "invalid system call number".
217 getdents64 Full Support Fully Supported.
218 set_tid_address Full Support Fully Supported.
219 restart_syscall Full Support Fully Supported.
220 semtimedop Full Support Fully Supported.
221 fadvise64 Partial Support The syscall is 'supported', but ignores all provided advice.
222 timer_create Full Support Fully Supported.
223 timer_settime Full Support Fully Supported.
224 timer_gettime Full Support Fully Supported.
225 timer_getoverrun Full Support Fully Supported.
226 timer_delete Full Support Fully Supported.
227 clock_settime Full Support Fully Supported.
228 clock_gettime Full Support Fully Supported.
229 clock_getres Full Support Fully Supported.
230 clock_nanosleep Full Support Fully Supported.
231 exit_group Full Support Fully Supported.
232 epoll_wait Full Support Fully Supported.
233 epoll_ctl Full Support Fully Supported.
234 tgkill Full Support Fully Supported.
235 utimes Full Support Fully Supported.
236 vserver Unimplemented Not implemented by Linux; Returns "invalid system call number".
237 mbind Partial Support Stub implementation. Only a single NUMA node is advertised, and mempolicy is ignored accordingly, but mbind() will succeed and has effects reflected by get_mempolicy.
See: https://gvisor.dev/issue/262
238 set_mempolicy Partial Support Stub implementation.
239 get_mempolicy Partial Support Stub implementation.
240 mq_open Full Support Fully Supported.
242 mq_timedsend Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/136
243 mq_timedreceive Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/136
244 mq_notify Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/136
245 mq_getsetattr Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/136
246 kexec_load Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_BOOT; "invalid system call number" otherwise.
247 waitid Full Support Fully Supported.
248 add_key Unimplemented Not available to user.; Returns "permission denied".
249 request_key Unimplemented Not available to user.; Returns "permission denied".
250 keyctl Unimplemented Not available to user.; Returns "permission denied".
251 ioprio_set Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_ADMIN; "invalid system call number" otherwise.
252 ioprio_get Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_ADMIN; "invalid system call number" otherwise.
253 inotify_init Partial Support inotify events are only available inside the sandbox.
254 inotify_add_watch Partial Support inotify events are only available inside the sandbox.
255 inotify_rm_watch Partial Support inotify events are only available inside the sandbox.
256 migrate_pages Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_NICE; "invalid system call number" otherwise.
257 openat Full Support Fully Supported.
258 mkdirat Full Support Fully Supported.
259 mknodat Full Support Fully Supported.
260 fchownat Full Support Fully Supported.
261 futimesat Full Support Fully Supported.
262 newfstatat Full Support Fully Supported.
263 unlinkat Full Support Fully Supported.
264 renameat Full Support Fully Supported.
265 linkat Full Support Fully Supported.
266 symlinkat Full Support Fully Supported.
267 readlinkat Full Support Fully Supported.
268 fchmodat Full Support Fully Supported.
269 faccessat Full Support Fully Supported.
270 pselect Full Support Fully Supported.
271 ppoll Full Support Fully Supported.
272 unshare Partial Support Mount, cgroup namespaces not supported. Network namespaces supported but must be empty.
273 set_robust_list Full Support Fully Supported.
274 get_robust_list Full Support Fully Supported.
275 splice Full Support Fully Supported.
276 tee Full Support Fully Supported.
277 sync_file_range Full Support Fully Supported.
278 vmsplice Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/138
279 move_pages Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_NICE; "invalid system call number" otherwise.
280 utimensat Full Support Fully Supported.
281 epoll_pwait Full Support Fully Supported.
282 signalfd Full Support Fully Supported.
283 timerfd_create Full Support Fully Supported.
284 eventfd Full Support Fully Supported.
285 fallocate Partial Support Not all options are supported.
286 timerfd_settime Full Support Fully Supported.
287 timerfd_gettime Full Support Fully Supported.
288 accept4 Full Support Fully Supported.
289 signalfd4 Full Support Fully Supported.
290 eventfd2 Full Support Fully Supported.
291 epoll_create1 Full Support Fully Supported.
292 dup3 Full Support Fully Supported.
293 pipe2 Full Support Fully Supported.
294 inotify_init1 Partial Support inotify events are only available inside the sandbox.
295 preadv Full Support Fully Supported.
296 pwritev Full Support Fully Supported.
297 rt_tgsigqueueinfo Full Support Fully Supported.
298 perf_event_open Unimplemented No support for perf counters; Returns "no such device".
299 recvmmsg Full Support Fully Supported.
300 fanotify_init Unimplemented Needs CONFIG_FANOTIFY; Returns "invalid system call number".
301 fanotify_mark Unimplemented Needs CONFIG_FANOTIFY; Returns "invalid system call number".
302 prlimit64 Full Support Fully Supported.
303 name_to_handle_at Unimplemented Not supported by gVisor filesystems; Returns "operation not supported on transport endpoint".
304 open_by_handle_at Unimplemented Not supported by gVisor filesystems; Returns "operation not supported on transport endpoint".
305 clock_adjtime Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_TIME; "invalid system call number" otherwise.
306 syncfs Full Support Fully Supported.
307 sendmmsg Full Support Fully Supported.
308 setns Unimplemented Needs filesystem support; Returns "operation not supported on transport endpoint".
See: https://gvisor.dev/issue/140
309 getcpu Full Support Fully Supported.
310 process_vm_readv Full Support Fully Supported.
311 process_vm_writev Full Support Fully Supported.
312 kcmp Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_PTRACE; "invalid system call number" otherwise.
313 finit_module Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_MODULE; "invalid system call number" otherwise.
314 sched_setattr Unimplemented gVisor does not implement a scheduler.; Returns "invalid system call number".
See: https://gvisor.dev/issue/264
315 sched_getattr Unimplemented gVisor does not implement a scheduler.; Returns "invalid system call number".
See: https://gvisor.dev/issue/264
316 renameat2 Full Support Fully Supported.
317 seccomp Full Support Fully Supported.
318 getrandom Full Support Fully Supported.
319 memfd_create Full Support Fully Supported.
320 kexec_file_load Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_BOOT; "invalid system call number" otherwise.
321 bpf Unimplemented Returns "operation not permitted" if the process does not have CAP_SYS_ADMIN; "invalid system call number" otherwise.
322 execveat Full Support Fully Supported.
323 userfaultfd Unimplemented Returns "invalid system call number".
See: https://gvisor.dev/issue/266
324 membarrier Partial Support Not supported on all platforms.
325 mlock2 Partial Support Stub implementation. The sandbox lacks appropriate permissions.
326 copy_file_range Unimplemented Returns "invalid system call number".
327 preadv2 Full Support Fully Supported.
328 pwritev2 Full Support Fully Supported.
329 pkey_mprotect Unimplemented Returns "invalid system call number".
330 pkey_alloc Unimplemented Returns "invalid system call number".
331 pkey_free Unimplemented Returns "invalid system call number".
332 statx Full Support Fully Supported.
333 io_pgetevents Unimplemented Returns "invalid system call number".
334 rseq Partial Support Not supported on all platforms.
424 pidfd_send_signal Unimplemented Returns "invalid system call number".
425 io_uring_setup Partial Support Not all flags and functionality supported.
426 io_uring_enter Partial Support Not all flags and functionality supported.
427 io_uring_register Unimplemented Returns "invalid system call number".
428 open_tree Unimplemented Returns "invalid system call number".
429 move_mount Unimplemented Returns "invalid system call number".
430 fsopen Unimplemented Returns "invalid system call number".
431 fsconfig Unimplemented Returns "invalid system call number".
432 fsmount Unimplemented Returns "invalid system call number".
433 fspick Unimplemented Returns "invalid system call number".
434 pidfd_open Unimplemented Returns "invalid system call number".
435 clone3 Unimplemented Returns "invalid system call number".
436 close_range Full Support Fully Supported.
439 faccessat2 Full Support Fully Supported.
441 epoll_pwait2 Full Support Fully Supported.