PR_GET_AUXV(2const) — Linux manual page

PR_GET_AUXV(2const)                                   PR_GET_AUXV(2const)

NAME         top

       PR_GET_AUXV - get the auxiliary vector

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #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         top

       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         top

       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         top

       EFAULT auxv is an invalid address.

STANDARDS         top

       Linux.

HISTORY         top

       Linux 6.4.

SEE ALSO         top

       prctl(2)

COLOPHON         top

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Linux man-pages 6.15            2025-06-28            PR_GET_AUXV(2const)

Pages that refer to this page: prctl(2)

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