| tmpfs_vfsops.c (173570) | tmpfs_vfsops.c (173724) |
|---|---|
| 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 --- 34 unchanged lines hidden (view full) --- 43 * tmpfs is a file system that uses NetBSD's virtual memory sub-system 44 * (the well-known UVM) to store file data and metadata in an efficient 45 * way. This means that it does not follow the structure of an on-disk 46 * file system because it simply does not need to. Instead, it uses 47 * memory-specific data structures and algorithms to automatically 48 * allocate and release resources. 49 */ 50#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 --- 34 unchanged lines hidden (view full) --- 43 * tmpfs is a file system that uses NetBSD's virtual memory sub-system 44 * (the well-known UVM) to store file data and metadata in an efficient 45 * way. This means that it does not follow the structure of an on-disk 46 * file system because it simply does not need to. Instead, it uses 47 * memory-specific data structures and algorithms to automatically 48 * allocate and release resources. 49 */ 50#include <sys/cdefs.h> |
| 51__FBSDID("$FreeBSD: head/sys/fs/tmpfs/tmpfs_vfsops.c 173570 2007-11-12 18:57:33Z delphij $"); | 51__FBSDID("$FreeBSD: head/sys/fs/tmpfs/tmpfs_vfsops.c 173724 2007-11-18 04:40:42Z delphij $"); |
| 52 53#include <sys/param.h> 54#include <sys/limits.h> 55#include <sys/lock.h> 56#include <sys/mutex.h> 57#include <sys/kernel.h> 58#include <sys/stat.h> 59#include <sys/systm.h> --- 151 unchanged lines hidden (view full) --- 211 if (mp->mnt_flag & MNT_UPDATE) { 212 /* XXX: There is no support yet to update file system 213 * settings. Should be added. */ 214 215 return EOPNOTSUPP; 216 } 217 218 printf("WARNING: TMPFS is considered to be a highly experimental " | 52 53#include <sys/param.h> 54#include <sys/limits.h> 55#include <sys/lock.h> 56#include <sys/mutex.h> 57#include <sys/kernel.h> 58#include <sys/stat.h> 59#include <sys/systm.h> --- 151 unchanged lines hidden (view full) --- 211 if (mp->mnt_flag & MNT_UPDATE) { 212 /* XXX: There is no support yet to update file system 213 * settings. Should be added. */ 214 215 return EOPNOTSUPP; 216 } 217 218 printf("WARNING: TMPFS is considered to be a highly experimental " |
| 219 "feature in FreeBSD.\n"); | 219 "feature in FreeBSD.\n"); |
| 220 221 vn_lock(mp->mnt_vnodecovered, LK_SHARED | LK_RETRY, td); 222 error = VOP_GETATTR(mp->mnt_vnodecovered, &va, mp->mnt_cred, td); 223 VOP_UNLOCK(mp->mnt_vnodecovered, 0, td); 224 if (error) 225 return (error); 226 227 if (mp->mnt_cred->cr_ruid != 0 || 228 vfs_scanopt(mp->mnt_optnew, "gid", "%d", &root_gid) != 1) 229 root_gid = va.va_gid; 230 if (mp->mnt_cred->cr_ruid != 0 || 231 vfs_scanopt(mp->mnt_optnew, "uid", "%d", &root_uid) != 1) 232 root_uid = va.va_uid; 233 if (mp->mnt_cred->cr_ruid != 0 || 234 vfs_scanopt(mp->mnt_optnew, "mode", "%ho", &root_mode) != 1) 235 root_mode = va.va_mode; | 220 221 vn_lock(mp->mnt_vnodecovered, LK_SHARED | LK_RETRY, td); 222 error = VOP_GETATTR(mp->mnt_vnodecovered, &va, mp->mnt_cred, td); 223 VOP_UNLOCK(mp->mnt_vnodecovered, 0, td); 224 if (error) 225 return (error); 226 227 if (mp->mnt_cred->cr_ruid != 0 || 228 vfs_scanopt(mp->mnt_optnew, "gid", "%d", &root_gid) != 1) 229 root_gid = va.va_gid; 230 if (mp->mnt_cred->cr_ruid != 0 || 231 vfs_scanopt(mp->mnt_optnew, "uid", "%d", &root_uid) != 1) 232 root_uid = va.va_uid; 233 if (mp->mnt_cred->cr_ruid != 0 || 234 vfs_scanopt(mp->mnt_optnew, "mode", "%ho", &root_mode) != 1) 235 root_mode = va.va_mode; |
| 236 if(vfs_scanopt(mp->mnt_optnew, "inodes", "%d", &nodes_max) != 1) | 236 if (vfs_scanopt(mp->mnt_optnew, "inodes", "%d", &nodes_max) != 1) |
| 237 nodes_max = 0; | 237 nodes_max = 0; |
| 238 239 if(vfs_scanopt(mp->mnt_optnew, 240 "size", 241 "%qu", &size_max) != 1) | 238 if (vfs_scanopt(mp->mnt_optnew, "size", "%qu", &size_max) != 1) |
| 242 size_max = 0; 243 244 /* Do not allow mounts if we do not have enough memory to preserve 245 * the minimum reserved pages. */ 246 mem_size = cnt.v_free_count + cnt.v_inactive_count + get_swpgtotal(); 247 mem_size -= mem_size > cnt.v_wire_count ? cnt.v_wire_count : mem_size; 248 if (mem_size < TMPFS_PAGES_RESERVED) 249 return ENOSPC; --- 22 unchanged lines hidden (view full) --- 272 tmp->tm_nodes_max = nodes; 273 tmp->tm_nodes_inuse = 0; 274 tmp->tm_maxfilesize = (u_int64_t)(cnt.v_page_count + get_swpgtotal()) * PAGE_SIZE; 275 LIST_INIT(&tmp->tm_nodes_used); 276 277 tmp->tm_pages_max = pages; 278 tmp->tm_pages_used = 0; 279 tmp->tm_ino_unr = new_unrhdr(2, INT_MAX, &tmp->allnode_lock); | 239 size_max = 0; 240 241 /* Do not allow mounts if we do not have enough memory to preserve 242 * the minimum reserved pages. */ 243 mem_size = cnt.v_free_count + cnt.v_inactive_count + get_swpgtotal(); 244 mem_size -= mem_size > cnt.v_wire_count ? cnt.v_wire_count : mem_size; 245 if (mem_size < TMPFS_PAGES_RESERVED) 246 return ENOSPC; --- 22 unchanged lines hidden (view full) --- 269 tmp->tm_nodes_max = nodes; 270 tmp->tm_nodes_inuse = 0; 271 tmp->tm_maxfilesize = (u_int64_t)(cnt.v_page_count + get_swpgtotal()) * PAGE_SIZE; 272 LIST_INIT(&tmp->tm_nodes_used); 273 274 tmp->tm_pages_max = pages; 275 tmp->tm_pages_used = 0; 276 tmp->tm_ino_unr = new_unrhdr(2, INT_MAX, &tmp->allnode_lock); |
| 280 tmp->tm_dirent_pool = uma_zcreate( 281 "TMPFS dirent", 282 sizeof(struct tmpfs_dirent), 283 NULL, NULL, NULL, NULL, 284 UMA_ALIGN_PTR, 285 0); 286 tmp->tm_node_pool = uma_zcreate( 287 "TMPFS node", 288 sizeof(struct tmpfs_node), 289 tmpfs_node_ctor, tmpfs_node_dtor, 290 tmpfs_node_init, tmpfs_node_fini, 291 UMA_ALIGN_PTR, 292 0); | 277 tmp->tm_dirent_pool = uma_zcreate("TMPFS dirent", 278 sizeof(struct tmpfs_dirent), 279 NULL, NULL, NULL, NULL, 280 UMA_ALIGN_PTR, 0); 281 tmp->tm_node_pool = uma_zcreate("TMPFS node", 282 sizeof(struct tmpfs_node), 283 tmpfs_node_ctor, tmpfs_node_dtor, 284 tmpfs_node_init, tmpfs_node_fini, 285 UMA_ALIGN_PTR, 0); |
| 293 294 /* Allocate the root node. */ 295 error = tmpfs_alloc_node(tmp, VDIR, root_uid, 296 root_gid, root_mode & ALLPERMS, NULL, NULL, 297 VNOVAL, td, &root); 298 299 if (error != 0 || root == NULL) { 300 uma_zdestroy(tmp->tm_node_pool); --- 181 unchanged lines hidden --- | 286 287 /* Allocate the root node. */ 288 error = tmpfs_alloc_node(tmp, VDIR, root_uid, 289 root_gid, root_mode & ALLPERMS, NULL, NULL, 290 VNOVAL, td, &root); 291 292 if (error != 0 || root == NULL) { 293 uma_zdestroy(tmp->tm_node_pool); --- 181 unchanged lines hidden --- |