PR_SET_MM2const
Modify kernel memory map descriptor fields
Usage
#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h>
int prctl(PR_SET_MM, long op, ...);
Library
Standard C library (libc, -lc)
Overview
Modify certain kernel memory map descriptor fields of the calling process. Usually these fields are set by the kernel and dynamic loader (see ld.so(8) for more information) and a regular application should not use this feature. However, there are cases, such as self-modifying programs, where a program might find it useful to change its own memory map.
The calling process must have the CAP_SYS_RESOURCE capability. The value in op is one of the options below.
PR_SET_MM_START_CODE
PR_SET_MM_END_CODE
PR_SET_MM_START_DATA
PR_SET_MM_END_DATA
PR_SET_MM_START_STACK
PR_SET_MM_START_BRK
PR_SET_MM_BRK
PR_SET_MM_ARG_START
PR_SET_MM_ARG_END
PR_SET_MM_ENV_START
PR_SET_MM_ENV_END
PR_SET_MM_AUXV
PR_SET_MM_EXE_FILE
PR_SET_MM_MAP
PR_SET_MM_MAP_SIZE
Return value
On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.
Errors
EINVAL
|
op is not a valid value. |
|---|---|
EPERM
|
The caller does not have the |
Releases
2 releases since Debian 13 (Trixie); the text changed 1 time.