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 6.9.1                              2024-06-01                    PR_GET_TAGGED_ADDR_CTRL(2const)