PR_GET_TAGGED_ADDR_CTRL(2const)                PR_GET_TAGGED_ADDR_CTRL(2const)

NAME
       PR_GET_TAGGED_ADDR_CTRL - get the tagged address mode for the calling
       thread

LIBRARY
       Standard C library (libc, -lc)

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

       int prctl(PR_GET_TAGGED_ADDR_CTRL, 0L, 0L, 0L, 0L);

DESCRIPTION
       Returns the current tagged address mode for the calling thread.

       The call returns a nonnegative value describing the current tagged
       address mode, encoded in the same way as the mode argument of
       PR_SET_TAGGED_ADDR_CTRL(2const).

RETURN VALUE
       On success, this call returns the nonnegative value described above.
       On error, -1 is returned, and errno is set to indicate the error.

ERRORS
       This feature is disabled or unsupported by the kernel, or disabled via
       /proc/sys/abi/tagged_addr_disabled.

FILES
       /proc/sys/abi/tagged_addr_disabled

STANDARDS
       Linux.  arm64 only.

HISTORY
       Linux 5.4 (arm64).

SEE ALSO
       prctl(2), PR_SET_TAGGED_ADDR_CTRL(2const)

       For more information, see the kernel source file Documentation/arm64/
       tagged-address-abi.rst.

Linux man-pages 6.10              2024-07-23   PR_GET_TAGGED_ADDR_CTRL(2const)