PR_SET_MDWE(2const) PR_SET_MDWE(2const)
NAME
PR_SET_MDWE - set the Memory-Deny-Write-Execute protection mask for the
calling process
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <linux/prctl.h> /* Definition of PR_* constants */
#include <sys/prctl.h>
int prctl(PR_SET_MDWE, unsigned long mask, 0L, 0L, 0L);
DESCRIPTION
Set the calling process' Memory-Deny-Write-Execute protection mask.
Once protection bits are set, they can not be changed.
mask must be a bit mask of:
PR_MDWE_REFUSE_EXEC_GAIN
New memory mapping protections can't be writable and executable.
Non-executable mappings can't become executable.
PR_MDWE_NO_INHERIT (since Linux 6.6)
Do not propagate MDWE protection to child processes on fork(2).
Setting this bit requires setting PR_MDWE_REFUSE_EXEC_GAIN too.
RETURN VALUE
On success, 0 is returned. On error, -1 is returned, and errno is set
to indicate the error.
ERRORS
EINVAL mask is not a valid value.
STANDARDS
Linux.
HISTORY
Linux 6.3.
SEE ALSO
prctl(2), PR_GET_MDWE(2const)
Linux man-pages 6.9.1 2024-06-01 PR_SET_MDWE(2const)
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