#include <afsconfig.h>
#include "afs/param.h"
-RCSID
- ("$Header$");
#define __NO_VERSION__ /* don't define kernel_version in module.h */
#include <linux/module.h> /* early to avoid printf->printk mapping */
#include "afs/sysincludes.h"
#include "afsincludes.h"
#include "afs/afs_stats.h"
-#if !defined(AFS_LINUX26_ENV)
-#include "h/locks.h"
-#endif
-#if defined(AFS_LINUX24_ENV)
#include "h/smp_lock.h"
-#endif
struct vcache *afs_globalVp = 0;
struct vfs *afs_globalVFS = 0;
-#if defined(AFS_LINUX24_ENV)
-struct nameidata afs_cacheNd;
-#endif
+struct vfsmount *afs_cacheMnt;
int afs_was_mounted = 0; /* Used to force reload if mount/unmount/mount */
extern struct super_operations afs_sops;
+#if !defined(AFS_NONFSTRANS)
+extern struct export_operations afs_export_ops;
+#endif
extern afs_rwlock_t afs_xvcache;
extern struct afs_q VLRU;
/* Forward declarations */
static void iattr2vattr(struct vattr *vattrp, struct iattr *iattrp);
-static void update_inode_cache(struct inode *ip, struct vattr *vp);
static int afs_root(struct super_block *afsp);
struct super_block *afs_read_super(struct super_block *sb, void *data, int silent);
int afs_fill_super(struct super_block *sb, void *data, int silent);
-static struct super_block *afs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data);
/* afs_file_system
* VFS entry for Linux - installed in init_module
* 2) Mount call comes to us via do_mount -> read_super -> afs_read_super.
* We are expected to setup the super_block. See afs_read_super.
*/
-#if defined(AFS_LINUX26_ENV)
-struct backing_dev_info afs_backing_dev_info = {
- .ra_pages = (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE,
- .state = 0,
-};
-struct file_system_type afs_fs_type = {
- .owner = THIS_MODULE,
- .name = "afs",
- .get_sb = afs_get_sb,
- .kill_sb = kill_anon_super,
- .fs_flags = FS_BINARY_MOUNTDATA,
-};
-#elif defined(AFS_LINUX24_ENV)
-DECLARE_FSTYPE(afs_fs_type, "afs", afs_read_super, 0);
-#else
-struct file_system_type afs_fs_type = {
- "afs", /* name - used by mount operation. */
- 0, /* requires_dev - no for network filesystems. mount() will
- * pass us an "unnamed" device. */
- afs_read_super, /* wrapper to afs_mount */
- NULL /* pointer to next file_system_type once registered. */
-};
-#endif
/* afs_read_super
* read the "super block" for AFS - roughly eguivalent to struct vfs.
* dev, covered, s_rd_only, s_dirt, and s_type will be set by read_super.
*/
-#if defined(AFS_LINUX26_ENV)
-static struct super_block *
-afs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data)
+#ifdef GET_SB_HAS_STRUCT_VFSMOUNT
+int
+afs_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data, struct vfsmount *mnt)
+#else
+static struct superblock *
+afs_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data)
+#endif
{
+#ifdef GET_SB_HAS_STRUCT_VFSMOUNT
+ return get_sb_nodev(fs_type, flags, data, afs_fill_super, mnt);
+#else
return get_sb_nodev(fs_type, flags, data, afs_fill_super);
+#endif
}
+
+struct file_system_type afs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "afs",
+ .get_sb = afs_get_sb,
+ .kill_sb = kill_anon_super,
+ .fs_flags = FS_BINARY_MOUNTDATA,
+};
+
+struct backing_dev_info afs_backing_dev_info = {
+ .ra_pages = 32,
+};
+
int
afs_fill_super(struct super_block *sb, void *data, int silent)
-#else
-struct super_block *
-afs_read_super(struct super_block *sb, void *data, int silent)
-#endif
{
int code = 0;
printf
("You must reload the AFS kernel extensions before remounting AFS.\n");
AFS_GUNLOCK();
-#if defined(AFS_LINUX26_ENV)
return -EINVAL;
-#else
- return NULL;
-#endif
}
afs_was_mounted = 1;
/* Set basics of super_block */
-#if !defined(AFS_LINUX24_ENV)
- lock_super(sb);
-#endif
-#if defined(AFS_LINUX26_ENV)
__module_get(THIS_MODULE);
-#else
- MOD_INC_USE_COUNT;
-#endif
afs_globalVFS = sb;
sb->s_blocksize = 1024;
sb->s_blocksize_bits = 10;
sb->s_magic = AFS_VFSMAGIC;
sb->s_op = &afs_sops; /* Super block (vfs) ops */
+#if defined(HAVE_BDI_INIT)
+ bdi_init(&afs_backing_dev_info);
+#endif
+#if !defined(AFS_NONFSTRANS)
+ sb->s_export_op = &afs_export_ops;
+#endif
#if defined(MAX_NON_LFS)
+#ifdef AFS_64BIT_CLIENT
+#if !defined(MAX_LFS_FILESIZE)
+#if BITS_PER_LONG==32
+#define MAX_LFS_FILESIZE (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
+#elif BITS_PER_LONG==64
+#define MAX_LFS_FILESIZE 0x7fffffffffffffff
+#endif
+#endif
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+#else
sb->s_maxbytes = MAX_NON_LFS;
#endif
+#endif
code = afs_root(sb);
if (code) {
afs_globalVFS = NULL;
-#if defined(AFS_LINUX26_ENV)
module_put(THIS_MODULE);
-#else
- MOD_DEC_USE_COUNT;
-#endif
}
-#if !defined(AFS_LINUX24_ENV)
- unlock_super(sb);
-#endif
-
AFS_GUNLOCK();
-#if defined(AFS_LINUX26_ENV)
return code ? -EINVAL : 0;
-#else
- return code ? NULL : sb;
-#endif
}
register struct vcache *tvp = 0;
AFS_STATCNT(afs_root);
- if (afs_globalVp && (afs_globalVp->states & CStatd)) {
+ if (afs_globalVp && (afs_globalVp->f.states & CStatd)) {
tvp = afs_globalVp;
} else {
cred_t *credp = crref();
if (!(code = afs_InitReq(&treq, credp)) && !(code = afs_CheckInit())) {
tvp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
if (tvp) {
- extern struct inode_operations afs_dir_iops;
-#if defined(AFS_LINUX24_ENV)
- extern struct file_operations afs_dir_fops;
-#endif
+ struct inode *ip = AFSTOV(tvp);
+ struct vattr vattr;
- /* "/afs" is a directory, reset inode ops accordingly. */
- AFSTOV(tvp)->v_op = &afs_dir_iops;
-#if defined(AFS_LINUX24_ENV)
- AFSTOV(tvp)->v_fop = &afs_dir_fops;
-#endif
+ afs_getattr(tvp, &vattr, credp);
+ afs_fill_inode(ip, &vattr);
/* setup super_block and mount point inode. */
afs_globalVp = tvp;
-#if defined(AFS_LINUX24_ENV)
- afsp->s_root = d_alloc_root(AFSTOI(tvp));
-#else
- afsp->s_root = d_alloc_root(AFSTOI(tvp), NULL);
-#endif
+ afsp->s_root = d_alloc_root(ip);
afsp->s_root->d_op = &afs_dentry_operations;
} else
code = ENOENT;
afs_notify_change(struct dentry *dp, struct iattr *iattrp)
{
struct vattr vattr;
- int code;
cred_t *credp = crref();
struct inode *ip = dp->d_inode;
+ int code;
- AFS_GLOCK();
-#if defined(AFS_LINUX26_ENV)
- lock_kernel();
-#endif
VATTR_NULL(&vattr);
iattr2vattr(&vattr, iattrp); /* Convert for AFS vnodeops call. */
- update_inode_cache(ip, &vattr);
- code = afs_setattr(ITOAFS(ip), &vattr, credp);
- afs_CopyOutAttrs(ITOAFS(ip), &vattr);
- /* Note that the inode may still not have all the correct info. But at
- * least we've got the newest version of what was supposed to be set.
- */
-#if defined(AFS_LINUX26_ENV)
- unlock_kernel();
-#endif
+ lock_kernel();
+ AFS_GLOCK();
+ code = afs_setattr(VTOAFS(ip), &vattr, credp);
+ if (!code) {
+ afs_getattr(VTOAFS(ip), &vattr, credp);
+ vattr2inode(ip, &vattr);
+ }
AFS_GUNLOCK();
+ unlock_kernel();
crfree(credp);
return -code;
}
-/* This list is simply used to initialize the i_list member of the
- * linux inode. This stops linux inode syncing code from choking on our
- * inodes.
- */
-static LIST_HEAD(dummy_inode_list);
+#if defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+#if defined(HAVE_KMEM_CACHE_T)
+static kmem_cache_t *afs_inode_cachep;
+#else
+struct kmem_cache *afs_inode_cachep;
+#endif
+static struct inode *
+afs_alloc_inode(struct super_block *sb)
+{
+ struct vcache *vcp;
-/* This is included for documentation only. */
-/* afs_write_inode
- * Used to flush in core inode to disk. We don't need to do this. Top level
- * write_inode() routine will clear i_dirt. If this routine is in the table,
- * it's expected to do the cleaning and clear i_dirt.
- *
- * 9/24/99: This is what we thought until we discovered msync() does end up calling
- * this function to sync a single inode to disk. msync() only flushes selective
- * pages to disk. So it needs an inode syncing function to update metadata when it
- * has synced some pages of a file to disk.
- */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
-#ifdef WRITE_INODE_NOT_VOID
-static int
+#if defined(SLAB_KERNEL)
+ vcp = (struct vcache *) kmem_cache_alloc(afs_inode_cachep, SLAB_KERNEL);
#else
-static void
+ vcp = (struct vcache *) kmem_cache_alloc(afs_inode_cachep, GFP_KERNEL);
#endif
-afs_write_inode(struct inode *ip, int unused)
-#else
+ if (!vcp)
+ return NULL;
+
+ return AFSTOV(vcp);
+}
+
+static void
+afs_destroy_inode(struct inode *inode)
+{
+ kmem_cache_free(afs_inode_cachep, inode);
+}
+
static void
-afs_write_inode(struct inode *ip)
+#if defined(HAVE_KMEM_CACHE_T)
+init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+#elif defined(KMEM_CACHE_INIT)
+init_once(struct kmem_cache * cachep, void * foo)
+#else
+init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
#endif
{
- list_del(&ip->i_list);
- /* and put it back on our dummy list. */
- put_inode_on_dummy_list(ip);
+ struct vcache *vcp = (struct vcache *) foo;
- /* for now we don't actually update the metadata during msync. This
- * is just to keep linux happy. */
-#ifdef WRITE_INODE_NOT_VOID
- return 0;
+#if defined(SLAB_CTOR_VERIFY)
+ if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
+ SLAB_CTOR_CONSTRUCTOR)
#endif
+ inode_init_once(AFSTOV(vcp));
}
-
-static void
-afs_destroy_inode(struct inode *ip)
+int
+afs_init_inodecache(void)
{
- ip->i_state = 0;
+#ifndef SLAB_RECLAIM_ACCOUNT
+#define SLAB_RECLAIM_ACCOUNT 0
+#endif
+
+#if defined(KMEM_CACHE_TAKES_DTOR)
+ afs_inode_cachep = kmem_cache_create("afs_inode_cache",
+ sizeof(struct vcache),
+ 0, SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT,
+ init_once, NULL);
+#else
+ afs_inode_cachep = kmem_cache_create("afs_inode_cache",
+ sizeof(struct vcache),
+ 0, SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT,
+ init_once);
+#endif
+ if (afs_inode_cachep == NULL)
+ return -ENOMEM;
+ return 0;
}
+void
+afs_destroy_inodecache(void)
+{
+ if (afs_inode_cachep)
+ (void) kmem_cache_destroy(afs_inode_cachep);
+}
+#else
+int
+afs_init_inodecache(void)
+{
+ return 0;
+}
-/* afs_put_inode
- * called from iput when count goes to zero. Linux version of inactive.
- * For Linux 2.2, this funcionality has moved to the delete inode super op.
- * If we use the common inode pool, we'll need to set i_nlink to 0 here.
- * That will trigger the call to delete routine.
- */
+void
+afs_destroy_inodecache(void)
+{
+ return;
+}
+#endif
static void
-afs_delete_inode(struct inode *ip)
+afs_clear_inode(struct inode *ip)
{
-#ifdef AFS_LINUX26_ENV
- put_inode_on_dummy_list(ip);
-#endif
+ struct vcache *vcp = VTOAFS(ip);
- AFS_GLOCK();
- osi_clear_inode(ip);
- AFS_GUNLOCK();
-}
+ if (vcp->vlruq.prev || vcp->vlruq.next)
+ osi_Panic("inode freed while on LRU");
+ if (vcp->hnext)
+ osi_Panic("inode freed while still hashed");
+#if !defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+ afs_osi_Free(ip->u.generic_ip, sizeof(struct vcache));
+#endif
+}
/* afs_put_super
* Called from unmount to release super_block. */
static void
afs_put_super(struct super_block *sbp)
{
- int code = 0;
-
AFS_GLOCK();
AFS_STATCNT(afs_unmount);
-#if !defined(AFS_LINUX26_ENV)
- if (!suser()) {
- AFS_GUNLOCK();
- return;
- }
-#endif
-
afs_globalVFS = 0;
afs_globalVp = 0;
+
+ osi_linux_free_inode_pages(); /* invalidate and release remaining AFS inodes. */
afs_shutdown();
-#if defined(AFS_LINUX24_ENV)
- path_release(&afs_cacheNd);
-#endif
+ mntput(afs_cacheMnt);
osi_linux_verify_alloced_memory();
+#if defined(HAVE_BDI_INIT)
+ bdi_destroy(&afs_backing_dev_info);
+#endif
AFS_GUNLOCK();
- if (!code) {
- sbp->s_dev = 0;
-#if defined(AFS_LINUX26_ENV)
- module_put(THIS_MODULE);
-#else
- MOD_DEC_USE_COUNT;
-#endif
- }
+ sbp->s_dev = 0;
+ module_put(THIS_MODULE);
}
* statp is in user space, so we need to cobble together a statfs, then
* copy it.
*/
-#if defined(AFS_LINUX26_ENV)
-int
-afs_statfs(struct super_block *sbp, struct kstatfs *statp)
-#elif defined(AFS_LINUX24_ENV)
int
-afs_statfs(struct super_block *sbp, struct statfs *statp)
+#if defined(STATFS_TAKES_DENTRY)
+afs_statfs(struct dentry *dentry, struct kstatfs *statp)
#else
-int
-afs_statfs(struct super_block *sbp, struct statfs *__statp, int size)
+afs_statfs(struct super_block *sbp, struct kstatfs *statp)
#endif
{
-#if !defined(AFS_LINUX24_ENV)
- struct statfs stat;
-
- if (size < sizeof(struct statfs))
- return;
-
- memset(&stat, 0, size);
- statp = &stat;
-#else
memset(statp, 0, sizeof(*statp));
-#endif
AFS_STATCNT(afs_statfs);
- statp->f_type = 0; /* Can we get a real type sometime? */
+ /* hardcode in case that which is giveth is taken away */
+ statp->f_type = 0x5346414F;
+#if defined(STATFS_TAKES_DENTRY)
+ statp->f_bsize = dentry->d_sb->s_blocksize;
+#else
statp->f_bsize = sbp->s_blocksize;
+#endif
statp->f_blocks = statp->f_bfree = statp->f_bavail = statp->f_files =
statp->f_ffree = 9000000;
statp->f_fsid.val[0] = AFS_VFSMAGIC;
statp->f_fsid.val[1] = AFS_VFSFSID;
statp->f_namelen = 256;
-#if !defined(AFS_LINUX24_ENV)
- memcpy_tofs(__statp, &stat, size);
-#endif
return 0;
}
-void
-afs_umount_begin(struct super_block *sbp)
-{
- afs_shuttingdown = 1;
-}
-
struct super_operations afs_sops = {
-#if defined(AFS_LINUX26_ENV)
- .drop_inode = generic_delete_inode,
+#if defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+ .alloc_inode = afs_alloc_inode,
.destroy_inode = afs_destroy_inode,
#endif
- .delete_inode = afs_delete_inode,
- .write_inode = afs_write_inode,
+ .clear_inode = afs_clear_inode,
.put_super = afs_put_super,
.statfs = afs_statfs,
- .umount_begin = afs_umount_begin
-#if !defined(AFS_LINUX24_ENV)
- .notify_change = afs_notify_change,
-#endif
};
/************** Support routines ************************/
if (iattrp->ia_valid & ATTR_SIZE)
vattrp->va_size = iattrp->ia_size;
if (iattrp->ia_valid & ATTR_ATIME) {
-#if defined(AFS_LINUX26_ENV)
vattrp->va_atime.tv_sec = iattrp->ia_atime.tv_sec;
-#else
- vattrp->va_atime.tv_sec = iattrp->ia_atime;
-#endif
vattrp->va_atime.tv_usec = 0;
}
if (iattrp->ia_valid & ATTR_MTIME) {
-#if defined(AFS_LINUX26_ENV)
vattrp->va_mtime.tv_sec = iattrp->ia_mtime.tv_sec;
-#else
- vattrp->va_mtime.tv_sec = iattrp->ia_mtime;
-#endif
vattrp->va_mtime.tv_usec = 0;
}
if (iattrp->ia_valid & ATTR_CTIME) {
-#if defined(AFS_LINUX26_ENV)
vattrp->va_ctime.tv_sec = iattrp->ia_ctime.tv_sec;
-#else
- vattrp->va_ctime.tv_sec = iattrp->ia_ctime;
-#endif
vattrp->va_ctime.tv_usec = 0;
}
}
-/* update_inode_cache
- * Update inode with info from vattr struct. Use va_mask to determine what
- * to update.
- */
-static void
-update_inode_cache(struct inode *ip, struct vattr *vp)
-{
- if (vp->va_mask & ATTR_MODE)
- ip->i_mode = vp->va_mode;
- if (vp->va_mask & ATTR_UID)
- ip->i_uid = vp->va_uid;
- if (vp->va_mask & ATTR_GID)
- ip->i_gid = vp->va_gid;
- if (vp->va_mask & ATTR_SIZE)
- ip->i_size = vp->va_size;
- if (vp->va_mask & ATTR_ATIME)
-#if defined(AFS_LINUX26_ENV)
- ip->i_atime.tv_sec = vp->va_atime.tv_sec;
-#else
- ip->i_atime = vp->va_atime.tv_sec;
-#endif
- if (vp->va_mask & ATTR_MTIME)
-#if defined(AFS_LINUX26_ENV)
- ip->i_mtime.tv_sec = vp->va_mtime.tv_sec;
-#else
- ip->i_mtime = vp->va_mtime.tv_sec;
-#endif
- if (vp->va_mask & ATTR_CTIME)
-#if defined(AFS_LINUX26_ENV)
- ip->i_ctime.tv_sec = vp->va_ctime.tv_sec;
-#else
- ip->i_ctime = vp->va_ctime.tv_sec;
-#endif
-}
-
/* vattr2inode
* Rewrite the inode cache from the attr. Assumes all vattr fields are valid.
*/
ip->i_ino = vp->va_nodeid;
ip->i_nlink = vp->va_nlink;
ip->i_blocks = vp->va_blocks;
+#ifdef STRUCT_INODE_HAS_I_BLKBITS
+ ip->i_blkbits = AFS_BLKBITS;
+#endif
+#ifdef STRUCT_INODE_HAS_I_BLKSIZE
ip->i_blksize = vp->va_blocksize;
+#endif
ip->i_rdev = vp->va_rdev;
ip->i_mode = vp->va_mode;
ip->i_uid = vp->va_uid;
ip->i_gid = vp->va_gid;
- ip->i_size = vp->va_size;
-#if defined(AFS_LINUX26_ENV)
+ i_size_write(ip, vp->va_size);
ip->i_atime.tv_sec = vp->va_atime.tv_sec;
+ ip->i_atime.tv_nsec = 0;
ip->i_mtime.tv_sec = vp->va_mtime.tv_sec;
+ /* Set the mtime nanoseconds to the sysname generation number.
+ * This convinces NFS clients that all directories have changed
+ * any time the sysname list changes.
+ */
+ ip->i_mtime.tv_nsec = afs_sysnamegen;
ip->i_ctime.tv_sec = vp->va_ctime.tv_sec;
-#else
- ip->i_atime = vp->va_atime.tv_sec;
- ip->i_mtime = vp->va_mtime.tv_sec;
- ip->i_ctime = vp->va_ctime.tv_sec;
-#endif
+ ip->i_ctime.tv_nsec = 0;
}
-/* Put this afs inode on our own dummy list. Linux expects to see inodes
- * nicely strung up in lists. Linux inode syncing code chokes on our inodes if
- * they're not on any lists.
+/* osi_linux_free_inode_pages
+ *
+ * Free all vnodes remaining in the afs hash. Must be done before
+ * shutting down afs and freeing all memory.
*/
void
-put_inode_on_dummy_list(struct inode *ip)
-{
- /* Initialize list. See explanation above. */
- list_add(&ip->i_list, &dummy_inode_list);
-}
-
-/* And yet another routine to update the inode cache - called from ProcessFS */
-void
-vcache2inode(struct vcache *avc)
+osi_linux_free_inode_pages(void)
{
- struct vattr vattr;
-
- VATTR_NULL(&vattr);
- afs_CopyOutAttrs(avc, &vattr); /* calls vattr2inode */
-}
-
-/* Yet another one for fakestat'ed mountpoints */
-void
-vcache2fakeinode(struct vcache *rootvp, struct vcache *mpvp)
-{
- struct vattr vattr;
-
- VATTR_NULL(&vattr);
- afs_CopyOutAttrs(rootvp, &vattr);
- vattr2inode(AFSTOI(mpvp), &vattr);
+ int i;
+ struct vcache *tvc, *nvc;
+ extern struct vcache *afs_vhashT[VCSIZE];
+
+ for (i = 0; i < VCSIZE; i++) {
+ for (tvc = afs_vhashT[i]; tvc; ) {
+ int slept;
+
+ nvc = tvc->hnext;
+ if (afs_FlushVCache(tvc, &slept)) /* slept always 0 for linux? */
+ printf("Failed to invalidate all pages on inode 0x%p\n", tvc);
+ tvc = nvc;
+ }
+ }
}
git://git.openafs.org / openafs.git / blobdiff