PR_GET_SECCOMP(2const) — Linux manual page

PR_GET_SECCOMP(2)          System Calls Manual          PR_GET_SECCOMP(2)

NAME         top

       PR_GET_SECCOMP - get the secure computing mode

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_GET_SECCOMP);

DESCRIPTION         top

       Return the secure computing mode of the calling thread.

       If the caller is not in secure computing mode, this operation
       returns 0; if the caller is in strict secure computing mode, then
       the prctl() call will cause a SIGKILL signal to be sent to the
       process.  If the caller is in filter mode, and this system call is
       allowed by the seccomp filters, it returns 2; otherwise, the
       process is killed with a SIGKILL signal.

       This operation is available only if the kernel is configured with
       CONFIG_SECCOMP enabled.

RETURN VALUE         top

       On success, this call returns the nonnegative value described
       above.  On error, -1 is returned, and errno is set to indicate the
       error; or the process is killed.

ERRORS         top

       EINVAL The kernel was not configured with CONFIG_SECCOMP.

       SIGKILL
              The caller is in strict secure computing mode.

       SIGKILL
              The caller is in filter mode, and this system call is not
              allowed by the seccomp filters.

FILES         top

       /proc/pid/status
              Since Linux 3.8, the Seccomp field of this file provides a
              method of obtaining the same information, without the risk
              that the process is killed; see proc_pid_status(5).

STANDARDS         top

       Linux.

HISTORY         top

       Linux 2.6.23.

SEE ALSO         top

       prctl(2), PR_SET_SECCOMP(2const), seccomp(2)

COLOPHON         top

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Linux man-pages 6.15            2025-05-17              PR_GET_SECCOMP(2)

Pages that refer to this page: prctl(2),  PR_SET_SECCOMP(2const)

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