pr_get_auxv(2const)

get the auxiliary vector

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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);

—

Options · 1

EFAULT

auxv is an invalid address.

NAME

PR_GET_AUXV - get the auxiliary vector

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

bash

#include <linux/prctl.h>\n  /* Definition of \nPR_*\n constants */
\n#include <sys/prctl.h>

bash

int prctl(PR_GET_AUXV, void \nauxv\n[.\nsize\n], unsigned long \nsize\n, 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.