PR_SET_MDWE - set the Memory-Deny-Write-Execute protection mask for the calling process

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(sinceLinux6.6) Do not propagate MDWE protection to child processes on fork(2). Setting this bit requires setting PR_MDWE_REFUSE_EXEC_GAIN too.

EINVALmask is not a valid value.

Linux 6.3.

Standard C library (libc, -lc)

PR_SET_MDWE - set the Memory-Deny-Write-Execute protection mask for the calling process

On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.

prctl(2), PR_GET_MDWE(2const) Linux man-pages 6.9.1 2024-06-01 PR_SET_MDWE(2const)

Linux.

#include<linux/prctl.h> /* Definition of PR_* constants */ #include<sys/prctl.h>intprctl(PR_SET_MDWE,unsignedlongmask,0L,0L,0L);