NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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PR_SET_MDWE(2const) PR_SET_MDWE(2const)
PR_SET_MDWE - set the Memory-Deny-Write-Execute protection mask for the calling process
Standard C library (libc, -lc)
#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h> int prctl(PR_SET_MDWE, unsigned long mask, 0L, 0L, 0L);
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.
On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.
EINVAL mask is not a valid value.
Linux.
Linux 6.3.
prctl(2), PR_GET_MDWE(2const)
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Linux man-pages 6.9.1 2024-06-01 PR_SET_MDWE(2const)
Pages that refer to this page: prctl(2), PR_GET_MDWE(2const)