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Merge tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client

Browse Source 
Pull ceph updates from Ilya Dryomov:
 "The highlights are:

   - automatic recovery of a blacklisted filesystem session (Zheng Yan).
     This is disabled by default and can be enabled by mounting with the
     new "recover_session=clean" option.

   - serialize buffered reads and O_DIRECT writes (Jeff Layton). Care is
     taken to avoid serializing O_DIRECT reads and writes with each
     other, this is based on the exclusion scheme from NFS.

   - handle large osdmaps better in the face of fragmented memory
     (myself)

   - don't limit what security.* xattrs can be get or set (Jeff Layton).
     We were overly restrictive here, unnecessarily preventing things
     like file capability sets stored in security.capability from
     working.

   - allow copy_file_range() within the same inode and across different
     filesystems within the same cluster (Luis Henriques)"

* tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client: (41 commits)
  ceph: call ceph_mdsc_destroy from destroy_fs_client
  libceph: use ceph_kvmalloc() for osdmap arrays
  libceph: avoid a __vmalloc() deadlock in ceph_kvmalloc()
  ceph: allow object copies across different filesystems in the same cluster
  ceph: include ceph_debug.h in cache.c
  ceph: move static keyword to the front of declarations
  rbd: pull rbd_img_request_create() dout out into the callers
  ceph: reconnect connection if session hang in opening state
  libceph: drop unused con parameter of calc_target()
  ceph: use release_pages() directly
  rbd: fix response length parameter for encoded strings
  ceph: allow arbitrary security.* xattrs
  ceph: only set CEPH_I_SEC_INITED if we got a MAC label
  ceph: turn ceph_security_invalidate_secctx into static inline
  ceph: add buffered/direct exclusionary locking for reads and writes
  libceph: handle OSD op ceph_pagelist_append() errors
  ceph: don't return a value from void function
  ceph: don't freeze during write page faults
  ceph: update the mtime when truncating up
  ceph: fix indentation in __get_snap_name()
  ...
This commit is contained in:
Linus Torvalds
2019-09-25 10:21:13 -07:00
parent 7b1373dd6e 3ee5a7015c
commit f41def3971
27 changed files with 764 additions and 382 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
fs/ceph/Makefile
View File

@@ -6,7 +6,7 @@
obj-$(CONFIG_CEPH_FS) += ceph.o
ceph-y := super.o inode.o dir.o file.o locks.o addr.o ioctl.o \
export.o caps.o snap.o xattr.o quota.o \
export.o caps.o snap.o xattr.o quota.o io.o \
mds_client.o mdsmap.o strings.o ceph_frag.o \
debugfs.o

61
fs/ceph/addr.c
View File

@@ -189,8 +189,7 @@ static int ceph_do_readpage(struct file *filp, struct page *page)
{
struct inode *inode = file_inode(filp);
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_osd_client *osdc =
&ceph_inode_to_client(inode)->client->osdc;
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
int err = 0;
u64 off = page_offset(page);
u64 len = PAGE_SIZE;
@@ -219,8 +218,8 @@ static int ceph_do_readpage(struct file *filp, struct page *page)
dout("readpage inode %p file %p page %p index %lu\n",
inode, filp, page, page->index);
err = ceph_osdc_readpages(osdc, ceph_vino(inode), &ci->i_layout,
off, &len,
err = ceph_osdc_readpages(&fsc->client->osdc, ceph_vino(inode),
&ci->i_layout, off, &len,
ci->i_truncate_seq, ci->i_truncate_size,
&page, 1, 0);
if (err == -ENOENT)
@@ -228,6 +227,8 @@ static int ceph_do_readpage(struct file *filp, struct page *page)
if (err < 0) {
SetPageError(page);
ceph_fscache_readpage_cancel(inode, page);
if (err == -EBLACKLISTED)
fsc->blacklisted = true;
goto out;
}
if (err < PAGE_SIZE)
@@ -266,6 +267,8 @@ static void finish_read(struct ceph_osd_request *req)
int i;
dout("finish_read %p req %p rc %d bytes %d\n", inode, req, rc, bytes);
if (rc == -EBLACKLISTED)
ceph_inode_to_client(inode)->blacklisted = true;
/* unlock all pages, zeroing any data we didn't read */
osd_data = osd_req_op_extent_osd_data(req, 0);
@@ -323,7 +326,8 @@ static int start_read(struct inode *inode, struct ceph_rw_context *rw_ctx,
/* caller of readpages does not hold buffer and read caps
* (fadvise, madvise and readahead cases) */
int want = CEPH_CAP_FILE_CACHE;
ret = ceph_try_get_caps(ci, CEPH_CAP_FILE_RD, want, true, &got);
ret = ceph_try_get_caps(inode, CEPH_CAP_FILE_RD, want,
true, &got);
if (ret < 0) {
dout("start_read %p, error getting cap\n", inode);
} else if (!(got & want)) {
@@ -569,7 +573,7 @@ static u64 get_writepages_data_length(struct inode *inode,
/*
* Write a single page, but leave the page locked.
*
* If we get a write error, set the page error bit, but still adjust the
* If we get a write error, mark the mapping for error, but still adjust the
* dirty page accounting (i.e., page is no longer dirty).
*/
static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
@@ -640,9 +644,10 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
end_page_writeback(page);
return err;
}
if (err == -EBLACKLISTED)
fsc->blacklisted = true;
dout("writepage setting page/mapping error %d %p\n",
err, page);
SetPageError(page);
mapping_set_error(&inode->i_data, err);
wbc->pages_skipped++;
} else {
@@ -679,23 +684,6 @@ static int ceph_writepage(struct page *page, struct writeback_control *wbc)
return err;
}
/*
* lame release_pages helper. release_pages() isn't exported to
* modules.
*/
static void ceph_release_pages(struct page **pages, int num)
{
struct pagevec pvec;
int i;
pagevec_init(&pvec);
for (i = 0; i < num; i++) {
if (pagevec_add(&pvec, pages[i]) == 0)
pagevec_release(&pvec);
}
pagevec_release(&pvec);
}
/*
* async writeback completion handler.
*
@@ -720,6 +708,8 @@ static void writepages_finish(struct ceph_osd_request *req)
if (rc < 0) {
mapping_set_error(mapping, rc);
ceph_set_error_write(ci);
if (rc == -EBLACKLISTED)
fsc->blacklisted = true;
} else {
ceph_clear_error_write(ci);
}
@@ -769,7 +759,7 @@ static void writepages_finish(struct ceph_osd_request *req)
dout("writepages_finish %p wrote %llu bytes cleaned %d pages\n",
inode, osd_data->length, rc >= 0 ? num_pages : 0);
ceph_release_pages(osd_data->pages, num_pages);
release_pages(osd_data->pages, num_pages);
}
ceph_put_wrbuffer_cap_refs(ci, total_pages, snapc);
@@ -1452,7 +1442,8 @@ static vm_fault_t ceph_filemap_fault(struct vm_fault *vmf)
want = CEPH_CAP_FILE_CACHE;
got = 0;
err = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, -1, &got, &pinned_page);
err = ceph_get_caps(vma->vm_file, CEPH_CAP_FILE_RD, want, -1,
&got, &pinned_page);
if (err < 0)
goto out_restore;
@@ -1540,6 +1531,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
if (!prealloc_cf)
return VM_FAULT_OOM;
sb_start_pagefault(inode->i_sb);
ceph_block_sigs(&oldset);
if (ci->i_inline_version != CEPH_INLINE_NONE) {
@@ -1568,7 +1560,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
want = CEPH_CAP_FILE_BUFFER;
got = 0;
err = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, off + len,
err = ceph_get_caps(vma->vm_file, CEPH_CAP_FILE_WR, want, off + len,
&got, NULL);
if (err < 0)
goto out_free;
@@ -1614,6 +1606,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
ceph_put_cap_refs(ci, got);
out_free:
ceph_restore_sigs(&oldset);
sb_end_pagefault(inode->i_sb);
ceph_free_cap_flush(prealloc_cf);
if (err < 0)
ret = vmf_error(err);
@@ -1946,12 +1939,17 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci,
if (err >= 0 || err == -ENOENT)
have |= POOL_READ;
else if (err != -EPERM)
else if (err != -EPERM) {
if (err == -EBLACKLISTED)
fsc->blacklisted = true;
goto out_unlock;
}
if (err2 == 0 || err2 == -EEXIST)
have |= POOL_WRITE;
else if (err2 != -EPERM) {
if (err2 == -EBLACKLISTED)
fsc->blacklisted = true;
err = err2;
goto out_unlock;
}
@@ -1989,10 +1987,11 @@ out:
return err;
}
int ceph_pool_perm_check(struct ceph_inode_info *ci, int need)
int ceph_pool_perm_check(struct inode *inode, int need)
{
s64 pool;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_string *pool_ns;
s64 pool;
int ret, flags;
if (ci->i_vino.snap != CEPH_NOSNAP) {
@@ -2004,7 +2003,7 @@ int ceph_pool_perm_check(struct ceph_inode_info *ci, int need)
return 0;
}
if (ceph_test_mount_opt(ceph_inode_to_client(&ci->vfs_inode),
if (ceph_test_mount_opt(ceph_inode_to_client(inode),
NOPOOLPERM))
return 0;

2
fs/ceph/cache.c
View File

@@ -6,6 +6,8 @@
* Written by Milosz Tanski (milosz@adfin.com)
*/
#include <linux/ceph/ceph_debug.h>
#include "super.h"
#include "cache.h"

173
fs/ceph/caps.c
View File

@@ -457,37 +457,6 @@ struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, int mds)
return cap;
}
/*
* Return id of any MDS with a cap, preferably FILE_WR|BUFFER|EXCL, else -1.
*/
static int __ceph_get_cap_mds(struct ceph_inode_info *ci)
{
struct ceph_cap *cap;
int mds = -1;
struct rb_node *p;
/* prefer mds with WR|BUFFER|EXCL caps */
for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) {
cap = rb_entry(p, struct ceph_cap, ci_node);
mds = cap->mds;
if (cap->issued & (CEPH_CAP_FILE_WR |
CEPH_CAP_FILE_BUFFER |
CEPH_CAP_FILE_EXCL))
break;
}
return mds;
}
int ceph_get_cap_mds(struct inode *inode)
{
struct ceph_inode_info *ci = ceph_inode(inode);
int mds;
spin_lock(&ci->i_ceph_lock);
mds = __ceph_get_cap_mds(ceph_inode(inode));
spin_unlock(&ci->i_ceph_lock);
return mds;
}
/*
* Called under i_ceph_lock.
*/
@@ -628,7 +597,7 @@ static void __check_cap_issue(struct ceph_inode_info *ci, struct ceph_cap *cap,
/*
* Add a capability under the given MDS session.
*
* Caller should hold session snap_rwsem (read) and s_mutex.
* Caller should hold session snap_rwsem (read) and ci->i_ceph_lock
*
* @fmode is the open file mode, if we are opening a file, otherwise
* it is < 0. (This is so we can atomically add the cap and add an
@@ -645,6 +614,9 @@ void ceph_add_cap(struct inode *inode,
struct ceph_cap *cap;
int mds = session->s_mds;
int actual_wanted;
u32 gen;
lockdep_assert_held(&ci->i_ceph_lock);
dout("add_cap %p mds%d cap %llx %s seq %d\n", inode,
session->s_mds, cap_id, ceph_cap_string(issued), seq);
@@ -656,6 +628,10 @@ void ceph_add_cap(struct inode *inode,
if (fmode >= 0)
wanted |= ceph_caps_for_mode(fmode);
spin_lock(&session->s_gen_ttl_lock);
gen = session->s_cap_gen;
spin_unlock(&session->s_gen_ttl_lock);
cap = __get_cap_for_mds(ci, mds);
if (!cap) {
cap = *new_cap;
@@ -681,7 +657,7 @@ void ceph_add_cap(struct inode *inode,
list_move_tail(&cap->session_caps, &session->s_caps);
spin_unlock(&session->s_cap_lock);
if (cap->cap_gen < session->s_cap_gen)
if (cap->cap_gen < gen)
cap->issued = cap->implemented = CEPH_CAP_PIN;
/*
@@ -775,7 +751,7 @@ void ceph_add_cap(struct inode *inode,
cap->seq = seq;
cap->issue_seq = seq;
cap->mseq = mseq;
cap->cap_gen = session->s_cap_gen;
cap->cap_gen = gen;
if (fmode >= 0)
__ceph_get_fmode(ci, fmode);
@@ -1284,10 +1260,6 @@ void __ceph_remove_caps(struct ceph_inode_info *ci)
* Make note of max_size reported/requested from mds, revoked caps
* that have now been implemented.
*
* Make half-hearted attempt ot to invalidate page cache if we are
* dropping RDCACHE. Note that this will leave behind locked pages
* that we'll then need to deal with elsewhere.
*
* Return non-zero if delayed release, or we experienced an error
* such that the caller should requeue + retry later.
*
@@ -1746,11 +1718,11 @@ static bool __finish_cap_flush(struct ceph_mds_client *mdsc,
* Add dirty inode to the flushing list. Assigned a seq number so we
* can wait for caps to flush without starving.
*
* Called under i_ceph_lock.
* Called under i_ceph_lock. Returns the flush tid.
*/
static int __mark_caps_flushing(struct inode *inode,
static u64 __mark_caps_flushing(struct inode *inode,
struct ceph_mds_session *session, bool wake,
u64 *flush_tid, u64 *oldest_flush_tid)
u64 *oldest_flush_tid)
{
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_inode_info *ci = ceph_inode(inode);
@@ -1789,8 +1761,7 @@ static int __mark_caps_flushing(struct inode *inode,
list_add_tail(&cf->i_list, &ci->i_cap_flush_list);
*flush_tid = cf->tid;
return flushing;
return cf->tid;
}
/*
@@ -2028,11 +1999,6 @@ retry_locked:
}
ack:
if (ci->i_ceph_flags & CEPH_I_NOFLUSH) {
dout(" skipping %p I_NOFLUSH set\n", inode);
continue;
}
if (session && session != cap->session) {
dout("oops, wrong session %p mutex\n", session);
mutex_unlock(&session->s_mutex);
@@ -2080,9 +2046,9 @@ ack:
}
if (cap == ci->i_auth_cap && ci->i_dirty_caps) {
flushing = __mark_caps_flushing(inode, session, false,
&flush_tid,
&oldest_flush_tid);
flushing = ci->i_dirty_caps;
flush_tid = __mark_caps_flushing(inode, session, false,
&oldest_flush_tid);
} else {
flushing = 0;
flush_tid = 0;
@@ -2130,16 +2096,11 @@ static int try_flush_caps(struct inode *inode, u64 *ptid)
retry:
spin_lock(&ci->i_ceph_lock);
retry_locked:
if (ci->i_ceph_flags & CEPH_I_NOFLUSH) {
spin_unlock(&ci->i_ceph_lock);
dout("try_flush_caps skipping %p I_NOFLUSH set\n", inode);
goto out;
}
if (ci->i_dirty_caps && ci->i_auth_cap) {
struct ceph_cap *cap = ci->i_auth_cap;
int delayed;
if (!session || session != cap->session) {
if (session != cap->session) {
spin_unlock(&ci->i_ceph_lock);
if (session)
mutex_unlock(&session->s_mutex);
@@ -2161,8 +2122,9 @@ retry_locked:
goto retry_locked;
}
flushing = __mark_caps_flushing(inode, session, true,
&flush_tid, &oldest_flush_tid);
flushing = ci->i_dirty_caps;
flush_tid = __mark_caps_flushing(inode, session, true,
&oldest_flush_tid);
/* __send_cap drops i_ceph_lock */
delayed = __send_cap(mdsc, cap, CEPH_CAP_OP_FLUSH,
@@ -2261,35 +2223,45 @@ static int unsafe_request_wait(struct inode *inode)
int ceph_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
struct ceph_file_info *fi = file->private_data;
struct inode *inode = file->f_mapping->host;
struct ceph_inode_info *ci = ceph_inode(inode);
u64 flush_tid;
int ret;
int ret, err;
int dirty;
dout("fsync %p%s\n", inode, datasync ? " datasync" : "");
ret = file_write_and_wait_range(file, start, end);
if (ret < 0)
goto out;
if (datasync)
goto out;
dirty = try_flush_caps(inode, &flush_tid);
dout("fsync dirty caps are %s\n", ceph_cap_string(dirty));
ret = unsafe_request_wait(inode);
err = unsafe_request_wait(inode);
/*
* only wait on non-file metadata writeback (the mds
* can recover size and mtime, so we don't need to
* wait for that)
*/
if (!ret && (dirty & ~CEPH_CAP_ANY_FILE_WR)) {
ret = wait_event_interruptible(ci->i_cap_wq,
if (!err && (dirty & ~CEPH_CAP_ANY_FILE_WR)) {
err = wait_event_interruptible(ci->i_cap_wq,
caps_are_flushed(inode, flush_tid));
}
if (err < 0)
ret = err;
if (errseq_check(&ci->i_meta_err, READ_ONCE(fi->meta_err))) {
spin_lock(&file->f_lock);
err = errseq_check_and_advance(&ci->i_meta_err,
&fi->meta_err);
spin_unlock(&file->f_lock);
if (err < 0)
ret = err;
}
out:
dout("fsync %p%s result=%d\n", inode, datasync ? " datasync" : "", ret);
return ret;
@@ -2560,10 +2532,15 @@ static void __take_cap_refs(struct ceph_inode_info *ci, int got,
*
* FIXME: how does a 0 return differ from -EAGAIN?
*/
static int try_get_cap_refs(struct ceph_inode_info *ci, int need, int want,
loff_t endoff, bool nonblock, int *got)
enum {
NON_BLOCKING = 1,
CHECK_FILELOCK = 2,
};
static int try_get_cap_refs(struct inode *inode, int need, int want,
loff_t endoff, int flags, int *got)
{
struct inode *inode = &ci->vfs_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
int ret = 0;
int have, implemented;
@@ -2576,6 +2553,13 @@ static int try_get_cap_refs(struct ceph_inode_info *ci, int need, int want,
again:
spin_lock(&ci->i_ceph_lock);
if ((flags & CHECK_FILELOCK) &&
(ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK)) {
dout("try_get_cap_refs %p error filelock\n", inode);
ret = -EIO;
goto out_unlock;
}
/* make sure file is actually open */
file_wanted = __ceph_caps_file_wanted(ci);
if ((file_wanted & need) != need) {
@@ -2637,7 +2621,7 @@ again:
* we can not call down_read() when
* task isn't in TASK_RUNNING state
*/
if (nonblock) {
if (flags & NON_BLOCKING) {
ret = -EAGAIN;
goto out_unlock;
}
@@ -2731,18 +2715,19 @@ static void check_max_size(struct inode *inode, loff_t endoff)
ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL);
}
int ceph_try_get_caps(struct ceph_inode_info *ci, int need, int want,
int ceph_try_get_caps(struct inode *inode, int need, int want,
bool nonblock, int *got)
{
int ret;
BUG_ON(need & ~CEPH_CAP_FILE_RD);
BUG_ON(want & ~(CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO|CEPH_CAP_FILE_SHARED));
ret = ceph_pool_perm_check(ci, need);
ret = ceph_pool_perm_check(inode, need);
if (ret < 0)
return ret;
ret = try_get_cap_refs(ci, need, want, 0, nonblock, got);
ret = try_get_cap_refs(inode, need, want, 0,
(nonblock ? NON_BLOCKING : 0), got);
return ret == -EAGAIN ? 0 : ret;
}
@@ -2751,30 +2736,40 @@ int ceph_try_get_caps(struct ceph_inode_info *ci, int need, int want,
* due to a small max_size, make sure we check_max_size (and possibly
* ask the mds) so we don't get hung up indefinitely.
*/
int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
int ceph_get_caps(struct file *filp, int need, int want,
loff_t endoff, int *got, struct page **pinned_page)
{
int _got, ret;
struct ceph_file_info *fi = filp->private_data;
struct inode *inode = file_inode(filp);
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
int ret, _got, flags;
ret = ceph_pool_perm_check(ci, need);
ret = ceph_pool_perm_check(inode, need);
if (ret < 0)
return ret;
if ((fi->fmode & CEPH_FILE_MODE_WR) &&
fi->filp_gen != READ_ONCE(fsc->filp_gen))
return -EBADF;
while (true) {
if (endoff > 0)
check_max_size(&ci->vfs_inode, endoff);
check_max_size(inode, endoff);
flags = atomic_read(&fi->num_locks) ? CHECK_FILELOCK : 0;
_got = 0;
ret = try_get_cap_refs(ci, need, want, endoff,
false, &_got);
ret = try_get_cap_refs(inode, need, want, endoff,
flags, &_got);
if (ret == -EAGAIN)
continue;
if (!ret) {
DEFINE_WAIT_FUNC(wait, woken_wake_function);
add_wait_queue(&ci->i_cap_wq, &wait);
while (!(ret = try_get_cap_refs(ci, need, want, endoff,
true, &_got))) {
flags |= NON_BLOCKING;
while (!(ret = try_get_cap_refs(inode, need, want,
endoff, flags, &_got))) {
if (signal_pending(current)) {
ret = -ERESTARTSYS;
break;
@@ -2786,10 +2781,18 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
if (ret == -EAGAIN)
continue;
}
if ((fi->fmode & CEPH_FILE_MODE_WR) &&
fi->filp_gen != READ_ONCE(fsc->filp_gen)) {
if (ret >= 0 && _got)
ceph_put_cap_refs(ci, _got);
return -EBADF;
}
if (ret < 0) {
if (ret == -ESTALE) {
/* session was killed, try renew caps */
ret = ceph_renew_caps(&ci->vfs_inode);
ret = ceph_renew_caps(inode);
if (ret == 0)
continue;
}
@@ -2798,9 +2801,9 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
if (ci->i_inline_version != CEPH_INLINE_NONE &&
(_got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) &&
i_size_read(&ci->vfs_inode) > 0) {
i_size_read(inode) > 0) {
struct page *page =
find_get_page(ci->vfs_inode.i_mapping, 0);
find_get_page(inode->i_mapping, 0);
if (page) {
if (PageUptodate(page)) {
*pinned_page = page;
@@ -2819,7 +2822,7 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
* getattr request will bring inline data into
* page cache
*/
ret = __ceph_do_getattr(&ci->vfs_inode, NULL,
ret = __ceph_do_getattr(inode, NULL,
CEPH_STAT_CAP_INLINE_DATA,
true);
if (ret < 0)

1
fs/ceph/debugfs.c
View File

@@ -294,7 +294,6 @@ void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
{
return 0;
}
void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)

54
fs/ceph/export.c
View File

@@ -35,7 +35,7 @@ struct ceph_nfs_snapfh {
static int ceph_encode_snapfh(struct inode *inode, u32 *rawfh, int *max_len,
struct inode *parent_inode)
{
const static int snap_handle_length =
static const int snap_handle_length =
sizeof(struct ceph_nfs_snapfh) >> 2;
struct ceph_nfs_snapfh *sfh = (void *)rawfh;
u64 snapid = ceph_snap(inode);
@@ -85,9 +85,9 @@ out:
static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
struct inode *parent_inode)
{
const static int handle_length =
static const int handle_length =
sizeof(struct ceph_nfs_fh) >> 2;
const static int connected_handle_length =
static const int connected_handle_length =
sizeof(struct ceph_nfs_confh) >> 2;
int type;
@@ -458,33 +458,33 @@ static int __get_snap_name(struct dentry *parent, char *name,
if (err < 0)
goto out;
rinfo = &req->r_reply_info;
for (i = 0; i < rinfo->dir_nr; i++) {
rde = rinfo->dir_entries + i;
BUG_ON(!rde->inode.in);
if (ceph_snap(inode) ==
le64_to_cpu(rde->inode.in->snapid)) {
memcpy(name, rde->name, rde->name_len);
name[rde->name_len] = '\0';
err = 0;
goto out;
}
}
rinfo = &req->r_reply_info;
for (i = 0; i < rinfo->dir_nr; i++) {
rde = rinfo->dir_entries + i;
BUG_ON(!rde->inode.in);
if (ceph_snap(inode) ==
le64_to_cpu(rde->inode.in->snapid)) {
memcpy(name, rde->name, rde->name_len);
name[rde->name_len] = '\0';
err = 0;
goto out;
}
}
if (rinfo->dir_end)
break;
if (rinfo->dir_end)
break;
BUG_ON(rinfo->dir_nr <= 0);
rde = rinfo->dir_entries + (rinfo->dir_nr - 1);
next_offset += rinfo->dir_nr;
last_name = kstrndup(rde->name, rde->name_len, GFP_KERNEL);
if (!last_name) {
err = -ENOMEM;
goto out;
}
BUG_ON(rinfo->dir_nr <= 0);
rde = rinfo->dir_entries + (rinfo->dir_nr - 1);
next_offset += rinfo->dir_nr;
last_name = kstrndup(rde->name, rde->name_len, GFP_KERNEL);
if (!last_name) {
err = -ENOMEM;
goto out;
}
ceph_mdsc_put_request(req);
req = NULL;
ceph_mdsc_put_request(req);
req = NULL;
}
err = -ENOENT;
out:

104
fs/ceph/file.c
View File

@@ -15,6 +15,7 @@
#include "super.h"
#include "mds_client.h"
#include "cache.h"
#include "io.h"
static __le32 ceph_flags_sys2wire(u32 flags)
{
@@ -201,6 +202,7 @@ out:
static int ceph_init_file_info(struct inode *inode, struct file *file,
int fmode, bool isdir)
{
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_file_info *fi;
dout("%s %p %p 0%o (%s)\n", __func__, inode, file,
@@ -211,7 +213,7 @@ static int ceph_init_file_info(struct inode *inode, struct file *file,
struct ceph_dir_file_info *dfi =
kmem_cache_zalloc(ceph_dir_file_cachep, GFP_KERNEL);
if (!dfi) {
ceph_put_fmode(ceph_inode(inode), fmode); /* clean up */
ceph_put_fmode(ci, fmode); /* clean up */
return -ENOMEM;
}
@@ -222,7 +224,7 @@ static int ceph_init_file_info(struct inode *inode, struct file *file,
} else {
fi = kmem_cache_zalloc(ceph_file_cachep, GFP_KERNEL);
if (!fi) {
ceph_put_fmode(ceph_inode(inode), fmode); /* clean up */
ceph_put_fmode(ci, fmode); /* clean up */
return -ENOMEM;
}
@@ -232,6 +234,8 @@ static int ceph_init_file_info(struct inode *inode, struct file *file,
fi->fmode = fmode;
spin_lock_init(&fi->rw_contexts_lock);
INIT_LIST_HEAD(&fi->rw_contexts);
fi->meta_err = errseq_sample(&ci->i_meta_err);
fi->filp_gen = READ_ONCE(ceph_inode_to_client(inode)->filp_gen);
return 0;
}
@@ -695,7 +699,13 @@ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *to,
ceph_release_page_vector(pages, num_pages);
}
if (ret <= 0 || off >= i_size || !more)
if (ret < 0) {
if (ret == -EBLACKLISTED)
fsc->blacklisted = true;
break;
}
if (off >= i_size || !more)
break;
}
@@ -921,7 +931,7 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter,
struct ceph_aio_request *aio_req = NULL;
int num_pages = 0;
int flags;
int ret;
int ret = 0;
struct timespec64 mtime = current_time(inode);
size_t count = iov_iter_count(iter);
loff_t pos = iocb->ki_pos;
@@ -935,11 +945,6 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter,
(write ? "write" : "read"), file, pos, (unsigned)count,
snapc, snapc ? snapc->seq : 0);
ret = filemap_write_and_wait_range(inode->i_mapping,
pos, pos + count - 1);
if (ret < 0)
return ret;
if (write) {
int ret2 = invalidate_inode_pages2_range(inode->i_mapping,
pos >> PAGE_SHIFT,
@@ -1260,7 +1265,8 @@ again:
want = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO;
else
want = CEPH_CAP_FILE_CACHE;
ret = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, -1, &got, &pinned_page);
ret = ceph_get_caps(filp, CEPH_CAP_FILE_RD, want, -1,
&got, &pinned_page);
if (ret < 0)
return ret;
@@ -1274,12 +1280,16 @@ again:
if (ci->i_inline_version == CEPH_INLINE_NONE) {
if (!retry_op && (iocb->ki_flags & IOCB_DIRECT)) {
ceph_start_io_direct(inode);
ret = ceph_direct_read_write(iocb, to,
NULL, NULL);
ceph_end_io_direct(inode);
if (ret >= 0 && ret < len)
retry_op = CHECK_EOF;
} else {
ceph_start_io_read(inode);
ret = ceph_sync_read(iocb, to, &retry_op);
ceph_end_io_read(inode);
}
} else {
retry_op = READ_INLINE;
@@ -1290,7 +1300,9 @@ again:
inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len,
ceph_cap_string(got));
ceph_add_rw_context(fi, &rw_ctx);
ceph_start_io_read(inode);
ret = generic_file_read_iter(iocb, to);
ceph_end_io_read(inode);
ceph_del_rw_context(fi, &rw_ctx);
}
dout("aio_read %p %llx.%llx dropping cap refs on %s = %d\n",
@@ -1399,7 +1411,10 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from)
return -ENOMEM;
retry_snap:
inode_lock(inode);
if (iocb->ki_flags & IOCB_DIRECT)
ceph_start_io_direct(inode);
else
ceph_start_io_write(inode);
/* We can write back this queue in page reclaim */
current->backing_dev_info = inode_to_bdi(inode);
@@ -1457,7 +1472,7 @@ retry_snap:
else
want = CEPH_CAP_FILE_BUFFER;
got = 0;
err = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, pos + count,
err = ceph_get_caps(file, CEPH_CAP_FILE_WR, want, pos + count,
&got, NULL);
if (err < 0)
goto out;
@@ -1470,7 +1485,6 @@ retry_snap:
(ci->i_ceph_flags & CEPH_I_ERROR_WRITE)) {
struct ceph_snap_context *snapc;
struct iov_iter data;
inode_unlock(inode);
spin_lock(&ci->i_ceph_lock);
if (__ceph_have_pending_cap_snap(ci)) {
@@ -1487,11 +1501,14 @@ retry_snap:
/* we might need to revert back to that point */
data = *from;
if (iocb->ki_flags & IOCB_DIRECT)
if (iocb->ki_flags & IOCB_DIRECT) {
written = ceph_direct_read_write(iocb, &data, snapc,
&prealloc_cf);
else
ceph_end_io_direct(inode);
} else {
written = ceph_sync_write(iocb, &data, pos, snapc);
ceph_end_io_write(inode);
}
if (written > 0)
iov_iter_advance(from, written);
ceph_put_snap_context(snapc);
@@ -1506,7 +1523,7 @@ retry_snap:
written = generic_perform_write(file, from, pos);
if (likely(written >= 0))
iocb->ki_pos = pos + written;
inode_unlock(inode);
ceph_end_io_write(inode);
}
if (written >= 0) {
@@ -1541,9 +1558,11 @@ retry_snap:
}
goto out_unlocked;
out:
inode_unlock(inode);
if (iocb->ki_flags & IOCB_DIRECT)
ceph_end_io_direct(inode);
else
ceph_end_io_write(inode);
out_unlocked:
ceph_free_cap_flush(prealloc_cf);
current->backing_dev_info = NULL;
@@ -1781,7 +1800,7 @@ static long ceph_fallocate(struct file *file, int mode,
else
want = CEPH_CAP_FILE_BUFFER;
ret = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, endoff, &got, NULL);
ret = ceph_get_caps(file, CEPH_CAP_FILE_WR, want, endoff, &got, NULL);
if (ret < 0)
goto unlock;
@@ -1810,16 +1829,15 @@ unlock:
* src_ci. Two attempts are made to obtain both caps, and an error is return if
* this fails; zero is returned on success.
*/
static int get_rd_wr_caps(struct ceph_inode_info *src_ci,
loff_t src_endoff, int *src_got,
struct ceph_inode_info *dst_ci,
static int get_rd_wr_caps(struct file *src_filp, int *src_got,
struct file *dst_filp,
loff_t dst_endoff, int *dst_got)
{
int ret = 0;
bool retrying = false;
retry_caps:
ret = ceph_get_caps(dst_ci, CEPH_CAP_FILE_WR, CEPH_CAP_FILE_BUFFER,
ret = ceph_get_caps(dst_filp, CEPH_CAP_FILE_WR, CEPH_CAP_FILE_BUFFER,
dst_endoff, dst_got, NULL);
if (ret < 0)
return ret;
@@ -1829,24 +1847,24 @@ retry_caps:
* we would risk a deadlock by using ceph_get_caps. Thus, we'll do some
* retry dance instead to try to get both capabilities.
*/
ret = ceph_try_get_caps(src_ci, CEPH_CAP_FILE_RD, CEPH_CAP_FILE_SHARED,
ret = ceph_try_get_caps(file_inode(src_filp),
CEPH_CAP_FILE_RD, CEPH_CAP_FILE_SHARED,
false, src_got);
if (ret <= 0) {
/* Start by dropping dst_ci caps and getting src_ci caps */
ceph_put_cap_refs(dst_ci, *dst_got);
ceph_put_cap_refs(ceph_inode(file_inode(dst_filp)), *dst_got);
if (retrying) {
if (!ret)
/* ceph_try_get_caps masks EAGAIN */
ret = -EAGAIN;
return ret;
}
ret = ceph_get_caps(src_ci, CEPH_CAP_FILE_RD,
CEPH_CAP_FILE_SHARED, src_endoff,
src_got, NULL);
ret = ceph_get_caps(src_filp, CEPH_CAP_FILE_RD,
CEPH_CAP_FILE_SHARED, -1, src_got, NULL);
if (ret < 0)
return ret;
/*... drop src_ci caps too, and retry */
ceph_put_cap_refs(src_ci, *src_got);
ceph_put_cap_refs(ceph_inode(file_inode(src_filp)), *src_got);
retrying = true;
goto retry_caps;
}
@@ -1904,6 +1922,7 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
struct ceph_inode_info *src_ci = ceph_inode(src_inode);
struct ceph_inode_info *dst_ci = ceph_inode(dst_inode);
struct ceph_cap_flush *prealloc_cf;
struct ceph_fs_client *src_fsc = ceph_inode_to_client(src_inode);
struct ceph_object_locator src_oloc, dst_oloc;
struct ceph_object_id src_oid, dst_oid;
loff_t endoff = 0, size;
@@ -1913,10 +1932,16 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
int src_got = 0, dst_got = 0, err, dirty;
bool do_final_copy = false;
if (src_inode == dst_inode)
return -EINVAL;
if (src_inode->i_sb != dst_inode->i_sb)
return -EXDEV;
if (src_inode->i_sb != dst_inode->i_sb) {
struct ceph_fs_client *dst_fsc = ceph_inode_to_client(dst_inode);
if (ceph_fsid_compare(&src_fsc->client->fsid,
&dst_fsc->client->fsid)) {
dout("Copying files across clusters: src: %pU dst: %pU\n",
&src_fsc->client->fsid, &dst_fsc->client->fsid);
return -EXDEV;
}
}
if (ceph_snap(dst_inode) != CEPH_NOSNAP)
return -EROFS;
@@ -1928,7 +1953,7 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
* efficient).
*/
if (ceph_test_mount_opt(ceph_inode_to_client(src_inode), NOCOPYFROM))
if (ceph_test_mount_opt(src_fsc, NOCOPYFROM))
return -EOPNOTSUPP;
if ((src_ci->i_layout.stripe_unit != dst_ci->i_layout.stripe_unit) ||
@@ -1960,8 +1985,8 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
* clients may have dirty data in their caches. And OSDs know nothing
* about caps, so they can't safely do the remote object copies.
*/
err = get_rd_wr_caps(src_ci, (src_off + len), &src_got,
dst_ci, (dst_off + len), &dst_got);
err = get_rd_wr_caps(src_file, &src_got,
dst_file, (dst_off + len), &dst_got);
if (err < 0) {
dout("get_rd_wr_caps returned %d\n", err);
ret = -EOPNOTSUPP;
@@ -2018,9 +2043,8 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
goto out;
}
len -= ret;
err = get_rd_wr_caps(src_ci, (src_off + len),
&src_got, dst_ci,
(dst_off + len), &dst_got);
err = get_rd_wr_caps(src_file, &src_got,
dst_file, (dst_off + len), &dst_got);
if (err < 0)
goto out;
err = is_file_size_ok(src_inode, dst_inode,
@@ -2044,7 +2068,7 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
dst_ci->i_vino.ino, dst_objnum);
/* Do an object remote copy */
err = ceph_osdc_copy_from(
&ceph_inode_to_client(src_inode)->client->osdc,
&src_fsc->client->osdc,
src_ci->i_vino.snap, 0,
&src_oid, &src_oloc,
CEPH_OSD_OP_FLAG_FADVISE_SEQUENTIAL |

50
fs/ceph/inode.c
View File

@@ -515,6 +515,8 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
ceph_fscache_inode_init(ci);
ci->i_meta_err = 0;
return &ci->vfs_inode;
}
@@ -801,7 +803,12 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
/* update inode */
inode->i_rdev = le32_to_cpu(info->rdev);
inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
/* directories have fl_stripe_unit set to zero */
if (le32_to_cpu(info->layout.fl_stripe_unit))
inode->i_blkbits =
fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
else
inode->i_blkbits = CEPH_BLOCK_SHIFT;
__ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files);
@@ -1982,7 +1989,7 @@ static const struct inode_operations ceph_symlink_iops = {
int __ceph_setattr(struct inode *inode, struct iattr *attr)
{
struct ceph_inode_info *ci = ceph_inode(inode);
const unsigned int ia_valid = attr->ia_valid;
unsigned int ia_valid = attr->ia_valid;
struct ceph_mds_request *req;
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_cap_flush *prealloc_cf;
@@ -2087,6 +2094,26 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR;
}
}
if (ia_valid & ATTR_SIZE) {
dout("setattr %p size %lld -> %lld\n", inode,
inode->i_size, attr->ia_size);
if ((issued & CEPH_CAP_FILE_EXCL) &&
attr->ia_size > inode->i_size) {
i_size_write(inode, attr->ia_size);
inode->i_blocks = calc_inode_blocks(attr->ia_size);
ci->i_reported_size = attr->ia_size;
dirtied |= CEPH_CAP_FILE_EXCL;
ia_valid |= ATTR_MTIME;
} else if ((issued & CEPH_CAP_FILE_SHARED) == 0 ||
attr->ia_size != inode->i_size) {
req->r_args.setattr.size = cpu_to_le64(attr->ia_size);
req->r_args.setattr.old_size =
cpu_to_le64(inode->i_size);
mask |= CEPH_SETATTR_SIZE;
release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL |
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR;
}
}
if (ia_valid & ATTR_MTIME) {
dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode,
inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec,
@@ -2109,25 +2136,6 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR;
}
}
if (ia_valid & ATTR_SIZE) {
dout("setattr %p size %lld -> %lld\n", inode,
inode->i_size, attr->ia_size);
if ((issued & CEPH_CAP_FILE_EXCL) &&
attr->ia_size > inode->i_size) {
i_size_write(inode, attr->ia_size);
inode->i_blocks = calc_inode_blocks(attr->ia_size);
ci->i_reported_size = attr->ia_size;
dirtied |= CEPH_CAP_FILE_EXCL;
} else if ((issued & CEPH_CAP_FILE_SHARED) == 0 ||
attr->ia_size != inode->i_size) {
req->r_args.setattr.size = cpu_to_le64(attr->ia_size);
req->r_args.setattr.old_size =
cpu_to_le64(inode->i_size);
mask |= CEPH_SETATTR_SIZE;
release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL |
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR;
}
}
/* these do nothing */
if (ia_valid & ATTR_CTIME) {

163
fs/ceph/io.c Normal file
View File

@@ -0,0 +1,163 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016 Trond Myklebust
* Copyright (c) 2019 Jeff Layton
*
* I/O and data path helper functionality.
*
* Heavily borrowed from equivalent code in fs/nfs/io.c
*/
#include <linux/ceph/ceph_debug.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/rwsem.h>
#include <linux/fs.h>
#include "super.h"
#include "io.h"
/* Call with exclusively locked inode->i_rwsem */
static void ceph_block_o_direct(struct ceph_inode_info *ci, struct inode *inode)
{
lockdep_assert_held_write(&inode->i_rwsem);
if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ODIRECT) {
spin_lock(&ci->i_ceph_lock);
ci->i_ceph_flags &= ~CEPH_I_ODIRECT;
spin_unlock(&ci->i_ceph_lock);
inode_dio_wait(inode);
}
}
/**
* ceph_start_io_read - declare the file is being used for buffered reads
* @inode: file inode
*
* Declare that a buffered read operation is about to start, and ensure
* that we block all direct I/O.
* On exit, the function ensures that the CEPH_I_ODIRECT flag is unset,
* and holds a shared lock on inode->i_rwsem to ensure that the flag
* cannot be changed.
* In practice, this means that buffered read operations are allowed to
* execute in parallel, thanks to the shared lock, whereas direct I/O
* operations need to wait to grab an exclusive lock in order to set
* CEPH_I_ODIRECT.
* Note that buffered writes and truncates both take a write lock on
* inode->i_rwsem, meaning that those are serialised w.r.t. the reads.
*/
void
ceph_start_io_read(struct inode *inode)
{
struct ceph_inode_info *ci = ceph_inode(inode);
/* Be an optimist! */
down_read(&inode->i_rwsem);
if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ODIRECT))
return;
up_read(&inode->i_rwsem);
/* Slow path.... */
down_write(&inode->i_rwsem);
ceph_block_o_direct(ci, inode);
downgrade_write(&inode->i_rwsem);
}
/**
* ceph_end_io_read - declare that the buffered read operation is done
* @inode: file inode
*
* Declare that a buffered read operation is done, and release the shared
* lock on inode->i_rwsem.
*/
void
ceph_end_io_read(struct inode *inode)
{
up_read(&inode->i_rwsem);
}
/**
* ceph_start_io_write - declare the file is being used for buffered writes
* @inode: file inode
*
* Declare that a buffered write operation is about to start, and ensure
* that we block all direct I/O.
*/
void
ceph_start_io_write(struct inode *inode)
{
down_write(&inode->i_rwsem);
ceph_block_o_direct(ceph_inode(inode), inode);
}
/**
* ceph_end_io_write - declare that the buffered write operation is done
* @inode: file inode
*
* Declare that a buffered write operation is done, and release the
* lock on inode->i_rwsem.
*/
void
ceph_end_io_write(struct inode *inode)
{
up_write(&inode->i_rwsem);
}
/* Call with exclusively locked inode->i_rwsem */
static void ceph_block_buffered(struct ceph_inode_info *ci, struct inode *inode)
{
lockdep_assert_held_write(&inode->i_rwsem);
if (!(READ_ONCE(ci->i_ceph_flags) & CEPH_I_ODIRECT)) {
spin_lock(&ci->i_ceph_lock);
ci->i_ceph_flags |= CEPH_I_ODIRECT;
spin_unlock(&ci->i_ceph_lock);
/* FIXME: unmap_mapping_range? */
filemap_write_and_wait(inode->i_mapping);
}
}
/**
* ceph_end_io_direct - declare the file is being used for direct i/o
* @inode: file inode
*
* Declare that a direct I/O operation is about to start, and ensure
* that we block all buffered I/O.
* On exit, the function ensures that the CEPH_I_ODIRECT flag is set,
* and holds a shared lock on inode->i_rwsem to ensure that the flag
* cannot be changed.
* In practice, this means that direct I/O operations are allowed to
* execute in parallel, thanks to the shared lock, whereas buffered I/O
* operations need to wait to grab an exclusive lock in order to clear
* CEPH_I_ODIRECT.
* Note that buffered writes and truncates both take a write lock on
* inode->i_rwsem, meaning that those are serialised w.r.t. O_DIRECT.
*/
void
ceph_start_io_direct(struct inode *inode)
{
struct ceph_inode_info *ci = ceph_inode(inode);
/* Be an optimist! */
down_read(&inode->i_rwsem);
if (READ_ONCE(ci->i_ceph_flags) & CEPH_I_ODIRECT)
return;
up_read(&inode->i_rwsem);
/* Slow path.... */
down_write(&inode->i_rwsem);
ceph_block_buffered(ci, inode);
downgrade_write(&inode->i_rwsem);
}
/**
* ceph_end_io_direct - declare that the direct i/o operation is done
* @inode: file inode
*
* Declare that a direct I/O operation is done, and release the shared
* lock on inode->i_rwsem.
*/
void
ceph_end_io_direct(struct inode *inode)
{
up_read(&inode->i_rwsem);
}

12
fs/ceph/io.h Normal file
View File

@@ -0,0 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_IO_H
#define _FS_CEPH_IO_H
void ceph_start_io_read(struct inode *inode);
void ceph_end_io_read(struct inode *inode);
void ceph_start_io_write(struct inode *inode);
void ceph_end_io_write(struct inode *inode);
void ceph_start_io_direct(struct inode *inode);
void ceph_end_io_direct(struct inode *inode);
#endif /* FS_CEPH_IO_H */

8
fs/ceph/locks.c
View File

@@ -32,14 +32,18 @@ void __init ceph_flock_init(void)
static void ceph_fl_copy_lock(struct file_lock *dst, struct file_lock *src)
{
struct inode *inode = file_inode(src->fl_file);
struct ceph_file_info *fi = dst->fl_file->private_data;
struct inode *inode = file_inode(dst->fl_file);
atomic_inc(&ceph_inode(inode)->i_filelock_ref);
atomic_inc(&fi->num_locks);
}
static void ceph_fl_release_lock(struct file_lock *fl)
{
struct ceph_file_info *fi = fl->fl_file->private_data;
struct inode *inode = file_inode(fl->fl_file);
struct ceph_inode_info *ci = ceph_inode(inode);
atomic_dec(&fi->num_locks);
if (atomic_dec_and_test(&ci->i_filelock_ref)) {
/* clear error when all locks are released */
spin_lock(&ci->i_ceph_lock);
@@ -73,7 +77,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct inode *inode,
* window. Caller function will decrease the counter.
*/
fl->fl_ops = &ceph_fl_lock_ops;
atomic_inc(&ceph_inode(inode)->i_filelock_ref);
fl->fl_ops->fl_copy_lock(fl, NULL);
}
if (operation != CEPH_MDS_OP_SETFILELOCK || cmd == CEPH_LOCK_UNLOCK)

110
fs/ceph/mds_client.c
View File

@@ -639,7 +639,6 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
s->s_renew_seq = 0;
INIT_LIST_HEAD(&s->s_caps);
s->s_nr_caps = 0;
s->s_trim_caps = 0;
refcount_set(&s->s_ref, 1);
INIT_LIST_HEAD(&s->s_waiting);
INIT_LIST_HEAD(&s->s_unsafe);
@@ -1270,6 +1269,7 @@ static void cleanup_session_requests(struct ceph_mds_client *mdsc,
{
struct ceph_mds_request *req;
struct rb_node *p;
struct ceph_inode_info *ci;
dout("cleanup_session_requests mds%d\n", session->s_mds);
mutex_lock(&mdsc->mutex);
@@ -1278,6 +1278,16 @@ static void cleanup_session_requests(struct ceph_mds_client *mdsc,
struct ceph_mds_request, r_unsafe_item);
pr_warn_ratelimited(" dropping unsafe request %llu\n",
req->r_tid);
if (req->r_target_inode) {
/* dropping unsafe change of inode's attributes */
ci = ceph_inode(req->r_target_inode);
errseq_set(&ci->i_meta_err, -EIO);
}
if (req->r_unsafe_dir) {
/* dropping unsafe directory operation */
ci = ceph_inode(req->r_unsafe_dir);
errseq_set(&ci->i_meta_err, -EIO);
}
__unregister_request(mdsc, req);
}
/* zero r_attempts, so kick_requests() will re-send requests */
@@ -1370,7 +1380,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
struct ceph_fs_client *fsc = (struct ceph_fs_client *)arg;
struct ceph_inode_info *ci = ceph_inode(inode);
LIST_HEAD(to_remove);
bool drop = false;
bool dirty_dropped = false;
bool invalidate = false;
dout("removing cap %p, ci is %p, inode is %p\n",
@@ -1383,9 +1393,12 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
struct ceph_cap_flush *cf;
struct ceph_mds_client *mdsc = fsc->mdsc;
if (ci->i_wrbuffer_ref > 0 &&
READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
invalidate = true;
if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
if (inode->i_data.nrpages > 0)
invalidate = true;
if (ci->i_wrbuffer_ref > 0)
mapping_set_error(&inode->i_data, -EIO);
}
while (!list_empty(&ci->i_cap_flush_list)) {
cf = list_first_entry(&ci->i_cap_flush_list,
@@ -1405,7 +1418,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
inode, ceph_ino(inode));
ci->i_dirty_caps = 0;
list_del_init(&ci->i_dirty_item);
drop = true;
dirty_dropped = true;
}
if (!list_empty(&ci->i_flushing_item)) {
pr_warn_ratelimited(
@@ -1415,10 +1428,22 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
ci->i_flushing_caps = 0;
list_del_init(&ci->i_flushing_item);
mdsc->num_cap_flushing--;
drop = true;
dirty_dropped = true;
}
spin_unlock(&mdsc->cap_dirty_lock);
if (dirty_dropped) {
errseq_set(&ci->i_meta_err, -EIO);
if (ci->i_wrbuffer_ref_head == 0 &&
ci->i_wr_ref == 0 &&
ci->i_dirty_caps == 0 &&
ci->i_flushing_caps == 0) {
ceph_put_snap_context(ci->i_head_snapc);
ci->i_head_snapc = NULL;
}
}
if (atomic_read(&ci->i_filelock_ref) > 0) {
/* make further file lock syscall return -EIO */
ci->i_ceph_flags |= CEPH_I_ERROR_FILELOCK;
@@ -1430,15 +1455,6 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
list_add(&ci->i_prealloc_cap_flush->i_list, &to_remove);
ci->i_prealloc_cap_flush = NULL;
}
if (drop &&
ci->i_wrbuffer_ref_head == 0 &&
ci->i_wr_ref == 0 &&
ci->i_dirty_caps == 0 &&
ci->i_flushing_caps == 0) {
ceph_put_snap_context(ci->i_head_snapc);
ci->i_head_snapc = NULL;
}
}
spin_unlock(&ci->i_ceph_lock);
while (!list_empty(&to_remove)) {
@@ -1452,7 +1468,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
wake_up_all(&ci->i_cap_wq);
if (invalidate)
ceph_queue_invalidate(inode);
if (drop)
if (dirty_dropped)
iput(inode);
return 0;
}
@@ -1705,11 +1721,11 @@ out:
*/
static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
{
struct ceph_mds_session *session = arg;
int *remaining = arg;
struct ceph_inode_info *ci = ceph_inode(inode);
int used, wanted, oissued, mine;
if (session->s_trim_caps <= 0)
if (*remaining <= 0)
return -1;
spin_lock(&ci->i_ceph_lock);
@@ -1746,7 +1762,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
if (oissued) {
/* we aren't the only cap.. just remove us */
__ceph_remove_cap(cap, true);
session->s_trim_caps--;
(*remaining)--;
} else {
struct dentry *dentry;
/* try dropping referring dentries */
@@ -1758,7 +1774,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
d_prune_aliases(inode);
count = atomic_read(&inode->i_count);
if (count == 1)
session->s_trim_caps--;
(*remaining)--;
dout("trim_caps_cb %p cap %p pruned, count now %d\n",
inode, cap, count);
} else {
@@ -1784,12 +1800,12 @@ int ceph_trim_caps(struct ceph_mds_client *mdsc,
dout("trim_caps mds%d start: %d / %d, trim %d\n",
session->s_mds, session->s_nr_caps, max_caps, trim_caps);
if (trim_caps > 0) {
session->s_trim_caps = trim_caps;
ceph_iterate_session_caps(session, trim_caps_cb, session);
int remaining = trim_caps;
ceph_iterate_session_caps(session, trim_caps_cb, &remaining);
dout("trim_caps mds%d done: %d / %d, trimmed %d\n",
session->s_mds, session->s_nr_caps, max_caps,
trim_caps - session->s_trim_caps);
session->s_trim_caps = 0;
trim_caps - remaining);
}
ceph_flush_cap_releases(mdsc, session);
@@ -3015,18 +3031,23 @@ bad:
pr_err("mdsc_handle_forward decode error err=%d\n", err);
}
static int __decode_and_drop_session_metadata(void **p, void *end)
static int __decode_session_metadata(void **p, void *end,
bool *blacklisted)
{
/* map<string,string> */
u32 n;
bool err_str;
ceph_decode_32_safe(p, end, n, bad);
while (n-- > 0) {
u32 len;
ceph_decode_32_safe(p, end, len, bad);
ceph_decode_need(p, end, len, bad);
err_str = !strncmp(*p, "error_string", len);
*p += len;
ceph_decode_32_safe(p, end, len, bad);
ceph_decode_need(p, end, len, bad);
if (err_str && strnstr(*p, "blacklisted", len))
*blacklisted = true;
*p += len;
}
return 0;
@@ -3050,6 +3071,7 @@ static void handle_session(struct ceph_mds_session *session,
u64 seq;
unsigned long features = 0;
int wake = 0;
bool blacklisted = false;
/* decode */
ceph_decode_need(&p, end, sizeof(*h), bad);
@@ -3062,7 +3084,7 @@ static void handle_session(struct ceph_mds_session *session,
if (msg_version >= 3) {
u32 len;
/* version >= 2, metadata */
if (__decode_and_drop_session_metadata(&p, end) < 0)
if (__decode_session_metadata(&p, end, &blacklisted) < 0)
goto bad;
/* version >= 3, feature bits */
ceph_decode_32_safe(&p, end, len, bad);
@@ -3149,6 +3171,8 @@ static void handle_session(struct ceph_mds_session *session,
session->s_state = CEPH_MDS_SESSION_REJECTED;
cleanup_session_requests(mdsc, session);
remove_session_caps(session);
if (blacklisted)
mdsc->fsc->blacklisted = true;
wake = 2; /* for good measure */
break;
@@ -3998,7 +4022,27 @@ static void lock_unlock_sessions(struct ceph_mds_client *mdsc)
mutex_unlock(&mdsc->mutex);
}
static void maybe_recover_session(struct ceph_mds_client *mdsc)
{
struct ceph_fs_client *fsc = mdsc->fsc;
if (!ceph_test_mount_opt(fsc, CLEANRECOVER))
return;
if (READ_ONCE(fsc->mount_state) != CEPH_MOUNT_MOUNTED)
return;
if (!READ_ONCE(fsc->blacklisted))
return;
if (fsc->last_auto_reconnect &&
time_before(jiffies, fsc->last_auto_reconnect + HZ * 60 * 30))
return;
pr_info("auto reconnect after blacklisted\n");
fsc->last_auto_reconnect = jiffies;
ceph_force_reconnect(fsc->sb);
}
/*
* delayed work -- periodically trim expired leases, renew caps with mds
@@ -4044,7 +4088,9 @@ static void delayed_work(struct work_struct *work)
pr_info("mds%d hung\n", s->s_mds);
}
}
if (s->s_state < CEPH_MDS_SESSION_OPEN) {
if (s->s_state == CEPH_MDS_SESSION_NEW ||
s->s_state == CEPH_MDS_SESSION_RESTARTING ||
s->s_state == CEPH_MDS_SESSION_REJECTED) {
/* this mds is failed or recovering, just wait */
ceph_put_mds_session(s);
continue;
@@ -4072,6 +4118,8 @@ static void delayed_work(struct work_struct *work)
ceph_trim_snapid_map(mdsc);
maybe_recover_session(mdsc);
schedule_delayed(mdsc);
}
@@ -4355,7 +4403,12 @@ void ceph_mdsc_force_umount(struct ceph_mds_client *mdsc)
session = __ceph_lookup_mds_session(mdsc, mds);
if (!session)
continue;
if (session->s_state == CEPH_MDS_SESSION_REJECTED)
__unregister_session(mdsc, session);
__wake_requests(mdsc, &session->s_waiting);
mutex_unlock(&mdsc->mutex);
mutex_lock(&session->s_mutex);
__close_session(mdsc, session);
if (session->s_state == CEPH_MDS_SESSION_CLOSING) {
@@ -4364,6 +4417,7 @@ void ceph_mdsc_force_umount(struct ceph_mds_client *mdsc)
}
mutex_unlock(&session->s_mutex);
ceph_put_mds_session(session);
mutex_lock(&mdsc->mutex);
kick_requests(mdsc, mds);
}

8
fs/ceph/mds_client.h
View File

@@ -148,9 +148,9 @@ enum {
CEPH_MDS_SESSION_OPENING = 2,
CEPH_MDS_SESSION_OPEN = 3,
CEPH_MDS_SESSION_HUNG = 4,
CEPH_MDS_SESSION_CLOSING = 5,
CEPH_MDS_SESSION_RESTARTING = 6,
CEPH_MDS_SESSION_RECONNECTING = 7,
CEPH_MDS_SESSION_RESTARTING = 5,
CEPH_MDS_SESSION_RECONNECTING = 6,
CEPH_MDS_SESSION_CLOSING = 7,
CEPH_MDS_SESSION_REJECTED = 8,
};
@@ -176,7 +176,7 @@ struct ceph_mds_session {
spinlock_t s_cap_lock;
struct list_head s_caps; /* all caps issued by this session */
struct ceph_cap *s_cap_iterator;
int s_nr_caps, s_trim_caps;
int s_nr_caps;
int s_num_cap_releases;
int s_cap_reconnect;
int s_readonly;

52
fs/ceph/super.c
View File

@@ -143,6 +143,7 @@ enum {
Opt_snapdirname,
Opt_mds_namespace,
Opt_fscache_uniq,
Opt_recover_session,
Opt_last_string,
/* string args above */
Opt_dirstat,
@@ -184,6 +185,7 @@ static match_table_t fsopt_tokens = {
/* int args above */
{Opt_snapdirname, "snapdirname=%s"},
{Opt_mds_namespace, "mds_namespace=%s"},
{Opt_recover_session, "recover_session=%s"},
{Opt_fscache_uniq, "fsc=%s"},
/* string args above */
{Opt_dirstat, "dirstat"},
@@ -254,6 +256,17 @@ static int parse_fsopt_token(char *c, void *private)
if (!fsopt->mds_namespace)
return -ENOMEM;
break;
case Opt_recover_session:
if (!strncmp(argstr[0].from, "no",
argstr[0].to - argstr[0].from)) {
fsopt->flags &= ~CEPH_MOUNT_OPT_CLEANRECOVER;
} else if (!strncmp(argstr[0].from, "clean",
argstr[0].to - argstr[0].from)) {
fsopt->flags |= CEPH_MOUNT_OPT_CLEANRECOVER;
} else {
return -EINVAL;
}
break;
case Opt_fscache_uniq:
kfree(fsopt->fscache_uniq);
fsopt->fscache_uniq = kstrndup(argstr[0].from,
@@ -576,6 +589,10 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
if (fsopt->mds_namespace)
seq_show_option(m, "mds_namespace", fsopt->mds_namespace);
if (fsopt->flags & CEPH_MOUNT_OPT_CLEANRECOVER)
seq_show_option(m, "recover_session", "clean");
if (fsopt->wsize != CEPH_MAX_WRITE_SIZE)
seq_printf(m, ",wsize=%d", fsopt->wsize);
if (fsopt->rsize != CEPH_MAX_READ_SIZE)
@@ -664,6 +681,7 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
fsc->sb = NULL;
fsc->mount_state = CEPH_MOUNT_MOUNTING;
fsc->filp_gen = 1;
atomic_long_set(&fsc->writeback_count, 0);
@@ -713,6 +731,7 @@ static void destroy_fs_client(struct ceph_fs_client *fsc)
{
dout("destroy_fs_client %p\n", fsc);
ceph_mdsc_destroy(fsc);
destroy_workqueue(fsc->inode_wq);
destroy_workqueue(fsc->cap_wq);
@@ -829,7 +848,7 @@ static void ceph_umount_begin(struct super_block *sb)
fsc->mount_state = CEPH_MOUNT_SHUTDOWN;
ceph_osdc_abort_requests(&fsc->client->osdc, -EIO);
ceph_mdsc_force_umount(fsc->mdsc);
return;
fsc->filp_gen++; // invalidate open files
}
static int ceph_remount(struct super_block *sb, int *flags, char *data)
@@ -1089,7 +1108,6 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
}
if (ceph_sb_to_client(sb) != fsc) {
ceph_mdsc_destroy(fsc);
destroy_fs_client(fsc);
fsc = ceph_sb_to_client(sb);
dout("get_sb got existing client %p\n", fsc);
@@ -1115,7 +1133,6 @@ out_splat:
goto out_final;
out:
ceph_mdsc_destroy(fsc);
destroy_fs_client(fsc);
out_final:
dout("ceph_mount fail %ld\n", PTR_ERR(res));
@@ -1139,8 +1156,6 @@ static void ceph_kill_sb(struct super_block *s)
ceph_fscache_unregister_fs(fsc);
ceph_mdsc_destroy(fsc);
destroy_fs_client(fsc);
free_anon_bdev(dev);
}
@@ -1154,6 +1169,33 @@ static struct file_system_type ceph_fs_type = {
};
MODULE_ALIAS_FS("ceph");
int ceph_force_reconnect(struct super_block *sb)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
int err = 0;
ceph_umount_begin(sb);
/* Make sure all page caches get invalidated.
* see remove_session_caps_cb() */
flush_workqueue(fsc->inode_wq);
/* In case that we were blacklisted. This also reset
* all mon/osd connections */
ceph_reset_client_addr(fsc->client);
ceph_osdc_clear_abort_err(&fsc->client->osdc);
fsc->blacklisted = false;
fsc->mount_state = CEPH_MOUNT_MOUNTED;
if (sb->s_root) {
err = __ceph_do_getattr(d_inode(sb->s_root), NULL,
CEPH_STAT_CAP_INODE, true);
}
return err;
}
static int __init init_ceph(void)
{
int ret = init_caches();

49
fs/ceph/super.h
View File

@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/posix_acl.h>
#include <linux/refcount.h>
#include <linux/security.h>
#include <linux/ceph/libceph.h>
@@ -31,6 +32,7 @@
#define CEPH_BLOCK_SHIFT 22 /* 4 MB */
#define CEPH_BLOCK (1 << CEPH_BLOCK_SHIFT)
#define CEPH_MOUNT_OPT_CLEANRECOVER (1<<1) /* auto reonnect (clean mode) after blacklisted */
#define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */
#define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */
#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */
@@ -101,6 +103,11 @@ struct ceph_fs_client {
struct ceph_client *client;
unsigned long mount_state;
unsigned long last_auto_reconnect;
bool blacklisted;
u32 filp_gen;
loff_t max_file_size;
struct ceph_mds_client *mdsc;
@@ -395,6 +402,8 @@ struct ceph_inode_info {
struct fscache_cookie *fscache;
u32 i_fscache_gen;
#endif
errseq_t i_meta_err;
struct inode vfs_inode; /* at end */
};
@@ -499,17 +508,16 @@ static inline struct inode *ceph_find_inode(struct super_block *sb,
#define CEPH_I_DIR_ORDERED (1 << 0) /* dentries in dir are ordered */
#define CEPH_I_NODELAY (1 << 1) /* do not delay cap release */
#define CEPH_I_FLUSH (1 << 2) /* do not delay flush of dirty metadata */
#define CEPH_I_NOFLUSH (1 << 3) /* do not flush dirty caps */
#define CEPH_I_POOL_PERM (1 << 4) /* pool rd/wr bits are valid */
#define CEPH_I_POOL_RD (1 << 5) /* can read from pool */
#define CEPH_I_POOL_WR (1 << 6) /* can write to pool */
#define CEPH_I_SEC_INITED (1 << 7) /* security initialized */
#define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */
#define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */
#define CEPH_I_FLUSH_SNAPS (1 << 10) /* need flush snapss */
#define CEPH_I_ERROR_WRITE (1 << 11) /* have seen write errors */
#define CEPH_I_ERROR_FILELOCK (1 << 12) /* have seen file lock errors */
#define CEPH_I_POOL_PERM (1 << 3) /* pool rd/wr bits are valid */
#define CEPH_I_POOL_RD (1 << 4) /* can read from pool */
#define CEPH_I_POOL_WR (1 << 5) /* can write to pool */
#define CEPH_I_SEC_INITED (1 << 6) /* security initialized */
#define CEPH_I_CAP_DROPPED (1 << 7) /* caps were forcibly dropped */
#define CEPH_I_KICK_FLUSH (1 << 8) /* kick flushing caps */
#define CEPH_I_FLUSH_SNAPS (1 << 9) /* need flush snapss */
#define CEPH_I_ERROR_WRITE (1 << 10) /* have seen write errors */
#define CEPH_I_ERROR_FILELOCK (1 << 11) /* have seen file lock errors */
#define CEPH_I_ODIRECT (1 << 12) /* inode in direct I/O mode */
/*
* Masks of ceph inode work.
@@ -703,6 +711,10 @@ struct ceph_file_info {
spinlock_t rw_contexts_lock;
struct list_head rw_contexts;
errseq_t meta_err;
u32 filp_gen;
atomic_t num_locks;
};
struct ceph_dir_file_info {
@@ -842,7 +854,8 @@ static inline int default_congestion_kb(void)
}
/* super.c */
extern int ceph_force_reconnect(struct super_block *sb);
/* snap.c */
struct ceph_snap_realm *ceph_lookup_snap_realm(struct ceph_mds_client *mdsc,
u64 ino);
@@ -959,7 +972,10 @@ static inline bool ceph_security_xattr_wanted(struct inode *in)
#ifdef CONFIG_CEPH_FS_SECURITY_LABEL
extern int ceph_security_init_secctx(struct dentry *dentry, umode_t mode,
struct ceph_acl_sec_ctx *ctx);
extern void ceph_security_invalidate_secctx(struct inode *inode);
static inline void ceph_security_invalidate_secctx(struct inode *inode)
{
security_inode_invalidate_secctx(inode);
}
#else
static inline int ceph_security_init_secctx(struct dentry *dentry, umode_t mode,
struct ceph_acl_sec_ctx *ctx)
@@ -1039,7 +1055,6 @@ extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
struct ceph_mds_session *session);
extern struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci,
int mds);
extern int ceph_get_cap_mds(struct inode *inode);
extern void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps);
extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had);
extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
@@ -1058,9 +1073,9 @@ extern int ceph_encode_dentry_release(void **p, struct dentry *dn,
struct inode *dir,
int mds, int drop, int unless);
extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
extern int ceph_get_caps(struct file *filp, int need, int want,
loff_t endoff, int *got, struct page **pinned_page);
extern int ceph_try_get_caps(struct ceph_inode_info *ci,
extern int ceph_try_get_caps(struct inode *inode,
int need, int want, bool nonblock, int *got);
/* for counting open files by mode */
@@ -1071,7 +1086,7 @@ extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode);
extern const struct address_space_operations ceph_aops;
extern int ceph_mmap(struct file *file, struct vm_area_struct *vma);
extern int ceph_uninline_data(struct file *filp, struct page *locked_page);
extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need);
extern int ceph_pool_perm_check(struct inode *inode, int need);
extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc);
/* file.c */

76
fs/ceph/xattr.c
View File

@@ -20,7 +20,8 @@ static int __remove_xattr(struct ceph_inode_info *ci,
static bool ceph_is_valid_xattr(const char *name)
{
return !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) ||
return !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) ||
!strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) ||
!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) ||
!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
}
@@ -892,7 +893,8 @@ ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value,
memcpy(value, xattr->val, xattr->val_len);
if (current->journal_info &&
!strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN))
!strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) &&
security_ismaclabel(name + XATTR_SECURITY_PREFIX_LEN))
ci->i_ceph_flags |= CEPH_I_SEC_INITED;
out:
spin_unlock(&ci->i_ceph_lock);
@@ -903,11 +905,9 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
{
struct inode *inode = d_inode(dentry);
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_vxattr *vxattrs = ceph_inode_vxattrs(inode);
bool len_only = (size == 0);
u32 namelen;
int err;
int i;
spin_lock(&ci->i_ceph_lock);
dout("listxattr %p ver=%lld index_ver=%lld\n", inode,
@@ -936,33 +936,6 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
names = __copy_xattr_names(ci, names);
size -= namelen;
}
/* virtual xattr names, too */
if (vxattrs) {
for (i = 0; vxattrs[i].name; i++) {
size_t this_len;
if (vxattrs[i].flags & VXATTR_FLAG_HIDDEN)
continue;
if (vxattrs[i].exists_cb && !vxattrs[i].exists_cb(ci))
continue;
this_len = strlen(vxattrs[i].name) + 1;
namelen += this_len;
if (len_only)
continue;
if (this_len > size) {
err = -ERANGE;
goto out;
}
memcpy(names, vxattrs[i].name, this_len);
names += this_len;
size -= this_len;
}
}
err = namelen;
out:
spin_unlock(&ci->i_ceph_lock);
@@ -1293,42 +1266,8 @@ out:
ceph_pagelist_release(pagelist);
return err;
}
void ceph_security_invalidate_secctx(struct inode *inode)
{
security_inode_invalidate_secctx(inode);
}
static int ceph_xattr_set_security_label(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
const char *key, const void *buf,
size_t buflen, int flags)
{
if (security_ismaclabel(key)) {
const char *name = xattr_full_name(handler, key);
return __ceph_setxattr(inode, name, buf, buflen, flags);
}
return -EOPNOTSUPP;
}
static int ceph_xattr_get_security_label(const struct xattr_handler *handler,
struct dentry *unused, struct inode *inode,
const char *key, void *buf, size_t buflen)
{
if (security_ismaclabel(key)) {
const char *name = xattr_full_name(handler, key);
return __ceph_getxattr(inode, name, buf, buflen);
}
return -EOPNOTSUPP;
}
static const struct xattr_handler ceph_security_label_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.get = ceph_xattr_get_security_label,
.set = ceph_xattr_set_security_label,
};
#endif
#endif
#endif /* CONFIG_CEPH_FS_SECURITY_LABEL */
#endif /* CONFIG_SECURITY */
void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx)
{
@@ -1351,9 +1290,6 @@ const struct xattr_handler *ceph_xattr_handlers[] = {
#ifdef CONFIG_CEPH_FS_POSIX_ACL
&posix_acl_access_xattr_handler,
&posix_acl_default_xattr_handler,
#endif
#ifdef CONFIG_CEPH_FS_SECURITY_LABEL
&ceph_security_label_handler,
#endif
&ceph_other_xattr_handler,
NULL,