NAME

       PR_GET_AUXV - get the auxiliary vector

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

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

       int prctl(PR_GET_AUXV, void auxv[.size], unsigned long size, 0L, 0L);

DESCRIPTION

       Get the auxiliary vector (auxv) into the buffer pointed to by auxv, whose size is given by
       size.

       If the buffer is not long  enough  for  the  full  auxiliary  vector,  the  copy  will  be
       truncated.

RETURN VALUE

       On  success,  this  call  returns  the full size of the auxiliary vector.  On error, -1 is
       returned, and errno is set to indicate the error.

ERRORS

       EFAULT auxv is an invalid address.

STANDARDS

       Linux.

HISTORY

       Linux 6.4.

SEE ALSO

       prctl(2)