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ENOSYS(1) User Commands ENOSYS(1)
enosys - utility make syscalls fail with ENOSYS
enosys [--syscall|-s syscall] command
enosys is a simple command to execute a child process for which certain syscalls fail with errno ENOSYS. It can be used to test the behavior of applications in the face of missing syscalls as would happen when running on old kernels.
-s, --syscall Syscall to block. Can be specified multiple times. -l, --list List syscalls known to enosys. -h, --help Display help text and exit. -V, --version Print version and exit.
enosys exits with the status code of the executed process. The following values have special meanings: 1 internal error 2 system does not provide the necessary functionality
Thomas Weißschuh <thomas@t-8ch.de>
syscall(2)
For bug reports, use the issue tracker at https://github.com/util-linux/util-linux/issues.
The enosys command is part of the util-linux package which can be
downloaded from Linux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>. This page
is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have
a bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2023-06-23. (At that time, the date of the most recent commit
that was found in the repository was 2023-06-22.) If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in
this COLOPHON (which is not part of the original manual page),
send a mail to man-pages@man7.org
util-linux 2.39.268-ae62d 2023-06-22 ENOSYS(1)