PR_GET_AUXV - get the auxiliary vector

NAME  LIBRARY  SYNOPSIS  DESCRIPTION  RETURN VALUE  ERRORS  STANDARDS  HISTORY  SEE ALSO 

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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(size_t size;
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)

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