PR_GET_AUXV - get the auxiliary vector

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.

EFAULTauxv is an invalid address.

Linux 6.4.

Standard C library (libc, -lc)

PR_GET_AUXV - get the auxiliary vector

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.

prctl(2) Linux man-pages 6.9.1 2024-06-01 PR_GET_AUXV(2const)

Linux.

#include<linux/prctl.h> /* Definition of PR_* constants */ #include<sys/prctl.h>intprctl(PR_GET_AUXV,voidauxv[.size],unsignedlongsize,0L,0L);