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PR_SET_VMA(2const) — Linux manual page

PR_SET_VMA(2const)PR_SET_VMA(2const)

NAME        top

       PR_SET_VMA - set an attribute for virtual memory areas

LIBRARY        top

       Standard C library (libc,-lc)

SYNOPSIS        top

#include <linux/prctl.h>/* Definition ofPR_*constants */#include <sys/prctl.h>int prctl(PR_SET_VMA, longattr, unsigned longaddr, unsigned longsize,const char *_Nullableval);

DESCRIPTION        top

       Sets an attribute specified inattr for virtual memory areas       starting from the address specified inaddr and spanning the size       specified insize.val specifies the value of the attribute to be       set.       Note that assigning an attribute to a virtual memory area might       prevent it from being merged with adjacent virtual memory areas       due to the difference in that attribute's value.       Currently,attr must be one of:PR_SET_VMA_ANON_NAME              Set a name for anonymous virtual memory areas.val should              be a pointer to a null-terminated string containing the              name.  The name length including null byte cannot exceed 80              bytes.  Ifval is NULL, the name of the appropriate              anonymous virtual memory areas will be reset.  The name can              contain only printable ascii characters (isprint(3)),              except'[',']','\','$', and'`'.

RETURN VALUE        top

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

ERRORS        top

EINVALattr is not a valid attribute.EINVALaddr is an invalid address.

STANDARDS        top

       Linux.

HISTORY        top

       Linux 5.17.

SEE ALSO        top

prctl(2)

COLOPHON        top

       This page is part of theman-pages (Linux kernel and C library       user-space interface documentation) project.  Information about       the project can be found at        ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report       for this manual page, see       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.       This page was obtained from the tarball man-pages-6.15.tar.gz       fetched from       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on       2025-08-11.  If you discover any rendering problems in this HTML       version of the page, or you believe there is a better or more up-       to-date source for the page, or you have corrections or       improvements to the information in this COLOPHON (which isnot       part of the original manual page), send a mail to       man-pages@man7.orgLinux man-pages 6.15            2025-05-17PR_SET_VMA(2const)

Pages that refer to this page:prctl(2)

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