plucky (2) PR_SET_UNALIGN.2const.gz

NAME
PR_SET_UNALIGN - set unaligned access control bits
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h> int prctl(PR_SET_UNALIGN, unsigned long flag);
DESCRIPTION
Set unaligned access control bits to arg2. Pass PR_UNALIGN_NOPRINT to silently fix up unaligned user accesses, or PR_UNALIGN_SIGBUS to generate SIGBUS on unaligned user access. Alpha also supports an additional flag with the value of 4 and no corresponding named constant, which instructs kernel to not fix up unaligned accesses (it is analogous to providing the UAC_NOFIX flag in SSI_NVPAIRS operation of the setsysinfo() system call on Tru64).
RETURN VALUE
On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.
ERRORS
EINVAL flag is not a valid value.
STANDARDS
Linux.
HISTORY
Only on: • ia64, since Linux 2.3.48 • parisc, since Linux 2.6.15 • PowerPC, since Linux 2.6.18 • Alpha, since Linux 2.6.22 • sh, since Linux 2.6.34 • tile, since Linux 3.12
SEE ALSO
prctl(2), PR_GET_UNALIGN(2const)