PR_SET_UNALIGN2const
Set unaligned access control bits
Usage
#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h>
int prctl(PR_SET_UNALIGN, unsigned long flag);
Library
Standard C library (libc, -lc)
Overview
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.
Releases
2 releases since Debian 13 (Trixie); the text changed 1 time.