PR_SET_MM(2const) - Linux manual page (original) (raw)

PRSETMM(2const) PRSETMM(2const)

NAME top

   PR_SET_MM - modify kernel memory map descriptor fields

LIBRARY top

   Standard C library (_libc_, _-lc_)

SYNOPSIS top

   **#include <linux/prctl.h>** /* Definition of **PR_*** constants */
   **#include <sys/prctl.h>**

   **int prctl(PR_SET_MM, long** _op_**, ...);**

DESCRIPTION top

   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)](../man8/ld.so.8.html) 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 top

   On success, 0 is returned.  On error, -1 is returned, and _[errno](../man3/errno.3.html)_ is
   set to indicate the error.

ERRORS top

   **EINVAL** _op_ is not a valid value.

   **EPERM** The caller does not have the **CAP_SYS_RESOURCE** capability.

STANDARDS top

   Linux.

HISTORY top

   Linux 3.3.

   Before Linux 3.10, this feature is available only if the kernel is
   built with the **CONFIG_CHECKPOINT_RESTORE** option enabled.

SEE ALSO top

   [prctl(2)](../man2/prctl.2.html), [PR_SET_MM_START_CODE(2const)](../man2/PR%5FSET%5FMM%5FSTART%5FCODE.2const.html),
   [PR_SET_MM_END_CODE(2const)](../man2/PR%5FSET%5FMM%5FEND%5FCODE.2const.html), [PR_SET_MM_START_DATA(2const)](../man2/PR%5FSET%5FMM%5FSTART%5FDATA.2const.html),
   [PR_SET_MM_END_DATA(2const)](../man2/PR%5FSET%5FMM%5FEND%5FDATA.2const.html), [PR_SET_MM_START_STACK(2const)](../man2/PR%5FSET%5FMM%5FSTART%5FSTACK.2const.html),
   [PR_SET_MM_START_BRK(2const)](../man2/PR%5FSET%5FMM%5FSTART%5FBRK.2const.html), [PR_SET_MM_BRK(2const)](../man2/PR%5FSET%5FMM%5FBRK.2const.html),
   [PR_SET_MM_ARG_START(2const)](../man2/PR%5FSET%5FMM%5FARG%5FSTART.2const.html), [PR_SET_MM_ARG_END(2const)](../man2/PR%5FSET%5FMM%5FARG%5FEND.2const.html),
   [PR_SET_MM_ENV_START(2const)](../man2/PR%5FSET%5FMM%5FENV%5FSTART.2const.html), [PR_SET_MM_ENV_END(2const)](../man2/PR%5FSET%5FMM%5FENV%5FEND.2const.html),
   [PR_SET_MM_EXE_FILE(2const)](../man2/PR%5FSET%5FMM%5FEXE%5FFILE.2const.html), [PR_SET_MM_MAP(2const)](../man2/PR%5FSET%5FMM%5FMAP.2const.html),
   [PR_SET_MM_MAP_SIZE(2const)](../man2/PR%5FSET%5FMM%5FMAP%5FSIZE.2const.html)

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   man-pages@man7.org

Linux man-pages 6.10 2024-07-23 PRSETMM(2const)

Pages that refer to this page:prctl(2), PR_SET_MM_ARG_START(2const), PR_SET_MM_AUXV(2const), PR_SET_MM_BRK(2const), PR_SET_MM_EXE_FILE(2const), PR_SET_MM_MAP(2const), PR_SET_MM_START_BRK(2const), PR_SET_MM_START_STACK(2const)