| tmpfs_vfsops.c (253573) | tmpfs_vfsops.c (254741) |
|---|---|
| 1/* $NetBSD: tmpfs_vfsops.c,v 1.10 2005/12/11 12:24:29 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julio M. Merino Vidal, developed as part of Google's Summer of Code --- 27 unchanged lines hidden (view full) --- 36 * tmpfs is a file system that uses NetBSD's virtual memory sub-system 37 * (the well-known UVM) to store file data and metadata in an efficient 38 * way. This means that it does not follow the structure of an on-disk 39 * file system because it simply does not need to. Instead, it uses 40 * memory-specific data structures and algorithms to automatically 41 * allocate and release resources. 42 */ 43#include <sys/cdefs.h> | 1/* $NetBSD: tmpfs_vfsops.c,v 1.10 2005/12/11 12:24:29 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julio M. Merino Vidal, developed as part of Google's Summer of Code --- 27 unchanged lines hidden (view full) --- 36 * tmpfs is a file system that uses NetBSD's virtual memory sub-system 37 * (the well-known UVM) to store file data and metadata in an efficient 38 * way. This means that it does not follow the structure of an on-disk 39 * file system because it simply does not need to. Instead, it uses 40 * memory-specific data structures and algorithms to automatically 41 * allocate and release resources. 42 */ 43#include <sys/cdefs.h> |
| 44__FBSDID("$FreeBSD: head/sys/fs/tmpfs/tmpfs_vfsops.c 253573 2013-07-23 14:48:37Z nwhitehorn $"); | 44__FBSDID("$FreeBSD: head/sys/fs/tmpfs/tmpfs_vfsops.c 254741 2013-08-23 22:52:20Z delphij $"); |
| 45 46#include <sys/param.h> 47#include <sys/limits.h> 48#include <sys/lock.h> 49#include <sys/mutex.h> | 45 46#include <sys/param.h> 47#include <sys/limits.h> 48#include <sys/lock.h> 49#include <sys/mutex.h> |
| 50#include <sys/proc.h> 51#include <sys/jail.h> |
|
| 50#include <sys/kernel.h> 51#include <sys/stat.h> 52#include <sys/systm.h> 53#include <sys/sysctl.h> 54 55#include <vm/vm.h> 56#include <vm/vm_object.h> 57#include <vm/vm_param.h> --- 75 unchanged lines hidden (view full) --- 133 134static int 135tmpfs_mount(struct mount *mp) 136{ 137 const size_t nodes_per_page = howmany(PAGE_SIZE, 138 sizeof(struct tmpfs_dirent) + sizeof(struct tmpfs_node)); 139 struct tmpfs_mount *tmp; 140 struct tmpfs_node *root; | 52#include <sys/kernel.h> 53#include <sys/stat.h> 54#include <sys/systm.h> 55#include <sys/sysctl.h> 56 57#include <vm/vm.h> 58#include <vm/vm_object.h> 59#include <vm/vm_param.h> --- 75 unchanged lines hidden (view full) --- 135 136static int 137tmpfs_mount(struct mount *mp) 138{ 139 const size_t nodes_per_page = howmany(PAGE_SIZE, 140 sizeof(struct tmpfs_dirent) + sizeof(struct tmpfs_node)); 141 struct tmpfs_mount *tmp; 142 struct tmpfs_node *root; |
| 143 struct thread *td = curthread; |
|
| 141 int error; 142 /* Size counters. */ 143 u_quad_t pages; 144 off_t nodes_max, size_max, maxfilesize; 145 146 /* Root node attributes. */ 147 uid_t root_uid; 148 gid_t root_gid; 149 mode_t root_mode; 150 151 struct vattr va; 152 | 144 int error; 145 /* Size counters. */ 146 u_quad_t pages; 147 off_t nodes_max, size_max, maxfilesize; 148 149 /* Root node attributes. */ 150 uid_t root_uid; 151 gid_t root_gid; 152 mode_t root_mode; 153 154 struct vattr va; 155 |
| 156 if (!prison_allow(td->td_ucred, PR_ALLOW_MOUNT_TMPFS)) 157 return (EPERM); 158 |
|
| 153 if (vfs_filteropt(mp->mnt_optnew, tmpfs_opts)) 154 return (EINVAL); 155 156 if (mp->mnt_flag & MNT_UPDATE) { 157 /* Only support update mounts for certain options. */ 158 if (vfs_filteropt(mp->mnt_optnew, tmpfs_updateopts) != 0) 159 return (EOPNOTSUPP); 160 if (vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) != --- 254 unchanged lines hidden (view full) --- 415 416struct vfsops tmpfs_vfsops = { 417 .vfs_mount = tmpfs_mount, 418 .vfs_unmount = tmpfs_unmount, 419 .vfs_root = tmpfs_root, 420 .vfs_statfs = tmpfs_statfs, 421 .vfs_fhtovp = tmpfs_fhtovp, 422}; | 159 if (vfs_filteropt(mp->mnt_optnew, tmpfs_opts)) 160 return (EINVAL); 161 162 if (mp->mnt_flag & MNT_UPDATE) { 163 /* Only support update mounts for certain options. */ 164 if (vfs_filteropt(mp->mnt_optnew, tmpfs_updateopts) != 0) 165 return (EOPNOTSUPP); 166 if (vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) != --- 254 unchanged lines hidden (view full) --- 421 422struct vfsops tmpfs_vfsops = { 423 .vfs_mount = tmpfs_mount, 424 .vfs_unmount = tmpfs_unmount, 425 .vfs_root = tmpfs_root, 426 .vfs_statfs = tmpfs_statfs, 427 .vfs_fhtovp = tmpfs_fhtovp, 428}; |
| 423VFS_SET(tmpfs_vfsops, tmpfs, 0); | 429VFS_SET(tmpfs_vfsops, tmpfs, VFCF_JAIL); |