diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
commit | 15c54033964a943de7b0763efd3bd0ede7326395 (patch) | |
tree | 840b292612d1b5396d5bab5bde537a9013db3ceb /fs/afs/file.c | |
parent | ad5da3cf39a5b11a198929be1f2644e17ecd767e (diff) | |
parent | 912a41a4ab935ce8c4308428ec13fc7f8b1f18f4 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (448 commits)
[IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)
[IPV6]: Fix thinko in ipv6_rthdr_rcv() changes.
[IPV4]: Add multipath cached to feature-removal-schedule.txt
[WIRELESS] cfg80211: Clarify locking comment.
[WIRELESS] cfg80211: Fix locking in wiphy_new.
[WEXT] net_device: Don't include wext bits if not required.
[WEXT]: Misc code cleanups.
[WEXT]: Reduce inline abuse.
[WEXT]: Move EXPORT_SYMBOL statements where they belong.
[WEXT]: Cleanup early ioctl call path.
[WEXT]: Remove options.
[WEXT]: Remove dead debug code.
[WEXT]: Clean up how wext is called.
[WEXT]: Move to net/wireless
[AFS]: Eliminate cmpxchg() usage in vlocation code.
[RXRPC]: Fix pointers passed to bitops.
[RXRPC]: Remove bogus atomic_* overrides.
[AFS]: Fix u64 printing in debug logging.
[AFS]: Add "directory write" support.
[AFS]: Implement the CB.InitCallBackState3 operation.
...
Diffstat (limited to 'fs/afs/file.c')
-rw-r--r-- | fs/afs/file.c | 124 |
1 files changed, 76 insertions, 48 deletions
diff --git a/fs/afs/file.c b/fs/afs/file.c index b17634541f6..ae256498f4f 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -1,6 +1,6 @@ -/* file.c: AFS filesystem file handling +/* AFS filesystem file handling * - * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. + * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or @@ -15,22 +15,25 @@ #include <linux/slab.h> #include <linux/fs.h> #include <linux/pagemap.h> -#include "volume.h" -#include "vnode.h" -#include <rxrpc/call.h> #include "internal.h" -#if 0 -static int afs_file_open(struct inode *inode, struct file *file); -static int afs_file_release(struct inode *inode, struct file *file); -#endif - static int afs_file_readpage(struct file *file, struct page *page); static void afs_file_invalidatepage(struct page *page, unsigned long offset); static int afs_file_releasepage(struct page *page, gfp_t gfp_flags); +const struct file_operations afs_file_operations = { + .open = afs_open, + .release = afs_release, + .llseek = generic_file_llseek, + .read = do_sync_read, + .aio_read = generic_file_aio_read, + .mmap = generic_file_readonly_mmap, + .sendfile = generic_file_sendfile, +}; + const struct inode_operations afs_file_inode_operations = { .getattr = afs_inode_getattr, + .permission = afs_permission, }; const struct address_space_operations afs_fs_aops = { @@ -40,7 +43,48 @@ const struct address_space_operations afs_fs_aops = { .invalidatepage = afs_file_invalidatepage, }; -/*****************************************************************************/ +/* + * open an AFS file or directory and attach a key to it + */ +int afs_open(struct inode *inode, struct file *file) +{ + struct afs_vnode *vnode = AFS_FS_I(inode); + struct key *key; + int ret; + + _enter("{%x:%x},", vnode->fid.vid, vnode->fid.vnode); + + key = afs_request_key(vnode->volume->cell); + if (IS_ERR(key)) { + _leave(" = %ld [key]", PTR_ERR(key)); + return PTR_ERR(key); + } + + ret = afs_validate(vnode, key); + if (ret < 0) { + _leave(" = %d [val]", ret); + return ret; + } + + file->private_data = key; + _leave(" = 0"); + return 0; +} + +/* + * release an AFS file or directory and discard its key + */ +int afs_release(struct inode *inode, struct file *file) +{ + struct afs_vnode *vnode = AFS_FS_I(inode); + + _enter("{%x:%x},", vnode->fid.vid, vnode->fid.vnode); + + key_put(file->private_data); + _leave(" = 0"); + return 0; +} + /* * deal with notification that a page was read from the cache */ @@ -58,10 +102,9 @@ static void afs_file_readpage_read_complete(void *cookie_data, SetPageUptodate(page); unlock_page(page); -} /* end afs_file_readpage_read_complete() */ +} #endif -/*****************************************************************************/ /* * deal with notification that a page was written to the cache */ @@ -74,41 +117,38 @@ static void afs_file_readpage_write_complete(void *cookie_data, _enter("%p,%p,%p,%d", cookie_data, page, data, error); unlock_page(page); - -} /* end afs_file_readpage_write_complete() */ +} #endif -/*****************************************************************************/ /* * AFS read page from file (or symlink) */ static int afs_file_readpage(struct file *file, struct page *page) { - struct afs_rxfs_fetch_descriptor desc; -#ifdef AFS_CACHING_SUPPORT - struct cachefs_page *pageio; -#endif struct afs_vnode *vnode; struct inode *inode; + struct key *key; + size_t len; + off_t offset; int ret; inode = page->mapping->host; - _enter("{%lu},{%lu}", inode->i_ino, page->index); + ASSERT(file != NULL); + key = file->private_data; + ASSERT(key != NULL); + + _enter("{%x},{%lu},{%lu}", key_serial(key), inode->i_ino, page->index); vnode = AFS_FS_I(inode); BUG_ON(!PageLocked(page)); ret = -ESTALE; - if (vnode->flags & AFS_VNODE_DELETED) + if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) goto error; #ifdef AFS_CACHING_SUPPORT - ret = cachefs_page_get_private(page, &pageio, GFP_NOIO); - if (ret < 0) - goto error; - /* is it cached? */ ret = cachefs_read_or_alloc_page(vnode->cache, page, @@ -132,26 +172,19 @@ static int afs_file_readpage(struct file *file, struct page *page) case -ENOBUFS: case -ENODATA: default: - desc.fid = vnode->fid; - desc.offset = page->index << PAGE_CACHE_SHIFT; - desc.size = min((size_t) (inode->i_size - desc.offset), - (size_t) PAGE_SIZE); - desc.buffer = kmap(page); - - clear_page(desc.buffer); + offset = page->index << PAGE_CACHE_SHIFT; + len = min_t(size_t, i_size_read(inode) - offset, PAGE_SIZE); /* read the contents of the file from the server into the * page */ - ret = afs_vnode_fetch_data(vnode, &desc); - kunmap(page); + ret = afs_vnode_fetch_data(vnode, key, offset, len, page); if (ret < 0) { - if (ret==-ENOENT) { + if (ret == -ENOENT) { _debug("got NOENT from server" " - marking file deleted and stale"); - vnode->flags |= AFS_VNODE_DELETED; + set_bit(AFS_VNODE_DELETED, &vnode->flags); ret = -ESTALE; } - #ifdef AFS_CACHING_SUPPORT cachefs_uncache_page(vnode->cache, page); #endif @@ -178,16 +211,13 @@ static int afs_file_readpage(struct file *file, struct page *page) _leave(" = 0"); return 0; - error: +error: SetPageError(page); unlock_page(page); - _leave(" = %d", ret); return ret; +} -} /* end afs_file_readpage() */ - -/*****************************************************************************/ /* * get a page cookie for the specified page */ @@ -202,10 +232,9 @@ int afs_cache_get_page_cookie(struct page *page, _leave(" = %d", ret); return ret; -} /* end afs_cache_get_page_cookie() */ +} #endif -/*****************************************************************************/ /* * invalidate part or all of a page */ @@ -240,9 +269,8 @@ static void afs_file_invalidatepage(struct page *page, unsigned long offset) } _leave(" = %d", ret); -} /* end afs_file_invalidatepage() */ +} -/*****************************************************************************/ /* * release a page and cleanup its private data */ @@ -267,4 +295,4 @@ static int afs_file_releasepage(struct page *page, gfp_t gfp_flags) _leave(" = 0"); return 0; -} /* end afs_file_releasepage() */ +} |