Date: Mon, 1 Dec 2008 22:33:50 +0000 (UTC) From: Alexander Kabaev <kan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r185533 - head/sys/kern Message-ID: <200812012233.mB1MXojv039186@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: kan Date: Mon Dec 1 22:33:50 2008 New Revision: 185533 URL: http://svn.freebsd.org/changeset/base/185533 Log: Shared memory objects that have size which is not necessarily equal to exact multiple of system page size should still be allowed to be mapped in their entirety to match the regular vnode backed file behavior. Reported by: ed Reviewed by: jhb Modified: head/sys/kern/uipc_shm.c Modified: head/sys/kern/uipc_shm.c ============================================================================== --- head/sys/kern/uipc_shm.c Mon Dec 1 21:15:04 2008 (r185532) +++ head/sys/kern/uipc_shm.c Mon Dec 1 22:33:50 2008 (r185533) @@ -605,7 +605,8 @@ shm_mmap(struct shmfd *shmfd, vm_size_t * XXXRW: This validation is probably insufficient, and subject to * sign errors. It should be fixed. */ - if (foff >= shmfd->shm_size || foff + objsize > shmfd->shm_size) + if (foff >= shmfd->shm_size || + foff + objsize > round_page(shmfd->shm_size)) return (EINVAL); mtx_lock(&shm_timestamp_lock);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200812012233.mB1MXojv039186>