]> git.sesse.net Git - bcachefs-tools-debian/blobdiff - libbcachefs/xattr.c
Update bcachefs sources to f70a3402188e bcachefs: Fix ca->oldest_gen allocation
[bcachefs-tools-debian] / libbcachefs / xattr.c
index 4fc6e065d4212c31962d502dd41e95a0b603e631..b069b1a62e25186be7fb068255080ca179593868 100644 (file)
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
 #include "bcachefs.h"
+#include "acl.h"
 #include "bkey_methods.h"
 #include "btree_update.h"
 #include "extents.h"
@@ -70,7 +71,8 @@ const struct bch_hash_desc bch2_xattr_hash_desc = {
 };
 
 int bch2_xattr_invalid(const struct bch_fs *c, struct bkey_s_c k,
-                      unsigned flags, struct printbuf *err)
+                      enum bkey_invalid_flags flags,
+                      struct printbuf *err)
 {
        const struct xattr_handler *handler;
        struct bkey_s_c_xattr xattr = bkey_s_c_to_xattr(k);
@@ -129,21 +131,27 @@ void bch2_xattr_to_text(struct printbuf *out, struct bch_fs *c,
               xattr.v->x_name,
               le16_to_cpu(xattr.v->x_val_len),
               (char *) xattr_val(xattr.v));
+
+       if (xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS ||
+           xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT) {
+               prt_char(out, ' ');
+               bch2_acl_to_text(out, xattr_val(xattr.v),
+                                le16_to_cpu(xattr.v->x_val_len));
+       }
 }
 
 static int bch2_xattr_get_trans(struct btree_trans *trans, struct bch_inode_info *inode,
                                const char *name, void *buffer, size_t size, int type)
 {
        struct bch_hash_info hash = bch2_hash_info_init(trans->c, &inode->ei_inode);
+       struct xattr_search_key search = X_SEARCH(type, name, strlen(name));
        struct btree_iter iter;
        struct bkey_s_c_xattr xattr;
        struct bkey_s_c k;
        int ret;
 
        ret = bch2_hash_lookup(trans, &iter, bch2_xattr_hash_desc, &hash,
-                              inode_inum(inode),
-                              &X_SEARCH(type, name, strlen(name)),
-                              0);
+                              inode_inum(inode), &search, 0);
        if (ret)
                goto err1;
 
@@ -163,34 +171,26 @@ static int bch2_xattr_get_trans(struct btree_trans *trans, struct bch_inode_info
 err2:
        bch2_trans_iter_exit(trans, &iter);
 err1:
-       return ret == -ENOENT ? -ENODATA : ret;
-}
-
-int bch2_xattr_get(struct bch_fs *c, struct bch_inode_info *inode,
-                  const char *name, void *buffer, size_t size, int type)
-{
-       return bch2_trans_do(c, NULL, NULL, 0,
-               bch2_xattr_get_trans(&trans, inode, name, buffer, size, type));
+       return ret < 0 && bch2_err_matches(ret, ENOENT) ? -ENODATA : ret;
 }
 
 int bch2_xattr_set(struct btree_trans *trans, subvol_inum inum,
+                  struct bch_inode_unpacked *inode_u,
                   const struct bch_hash_info *hash_info,
                   const char *name, const void *value, size_t size,
                   int type, int flags)
 {
+       struct bch_fs *c = trans->c;
        struct btree_iter inode_iter = { NULL };
-       struct bch_inode_unpacked inode_u;
        int ret;
 
-       /*
-        * We need to do an inode update so that bi_journal_sync gets updated
-        * and fsync works:
-        *
-        * Perhaps we should be updating bi_mtime too?
-        */
+       ret = bch2_inode_peek(trans, &inode_iter, inode_u, inum, BTREE_ITER_INTENT);
+       if (ret)
+               return ret;
+
+       inode_u->bi_ctime = bch2_current_time(c);
 
-       ret   = bch2_inode_peek(trans, &inode_iter, &inode_u, inum, BTREE_ITER_INTENT) ?:
-               bch2_inode_write(trans, &inode_iter, &inode_u);
+       ret = bch2_inode_write(trans, &inode_iter, inode_u);
        bch2_trans_iter_exit(trans, &inode_iter);
 
        if (ret)
@@ -229,7 +229,7 @@ int bch2_xattr_set(struct btree_trans *trans, subvol_inum inum,
                                       hash_info, inum, &search);
        }
 
-       if (ret == -ENOENT)
+       if (bch2_err_matches(ret, ENOENT))
                ret = flags & XATTR_REPLACE ? -ENODATA : 0;
 
        return ret;
@@ -307,24 +307,22 @@ ssize_t bch2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
 {
        struct bch_fs *c = dentry->d_sb->s_fs_info;
        struct bch_inode_info *inode = to_bch_ei(dentry->d_inode);
-       struct btree_trans trans;
+       struct btree_trans *trans = bch2_trans_get(c);
        struct btree_iter iter;
        struct bkey_s_c k;
        struct xattr_buf buf = { .buf = buffer, .len = buffer_size };
        u64 offset = 0, inum = inode->ei_inode.bi_inum;
        u32 snapshot;
        int ret;
-
-       bch2_trans_init(&trans, c, 0, 0);
 retry:
-       bch2_trans_begin(&trans);
+       bch2_trans_begin(trans);
        iter = (struct btree_iter) { NULL };
 
-       ret = bch2_subvolume_get_snapshot(&trans, inode->ei_subvol, &snapshot);
+       ret = bch2_subvolume_get_snapshot(trans, inode->ei_subvol, &snapshot);
        if (ret)
                goto err;
 
-       for_each_btree_key_upto_norestart(&trans, iter, BTREE_ID_xattrs,
+       for_each_btree_key_upto_norestart(trans, iter, BTREE_ID_xattrs,
                           SPOS(inum, offset, snapshot),
                           POS(inum, U64_MAX), 0, k, ret) {
                if (k.k->type != KEY_TYPE_xattr)
@@ -336,12 +334,12 @@ retry:
        }
 
        offset = iter.pos.offset;
-       bch2_trans_iter_exit(&trans, &iter);
+       bch2_trans_iter_exit(trans, &iter);
 err:
        if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
                goto retry;
 
-       bch2_trans_exit(&trans);
+       bch2_trans_put(trans);
 
        if (ret)
                goto out;
@@ -365,9 +363,9 @@ static int bch2_xattr_get_handler(const struct xattr_handler *handler,
 {
        struct bch_inode_info *inode = to_bch_ei(vinode);
        struct bch_fs *c = inode->v.i_sb->s_fs_info;
-       int ret;
+       int ret = bch2_trans_do(c, NULL, NULL, 0,
+               bch2_xattr_get_trans(trans, inode, name, buffer, size, handler->flags));
 
-       ret = bch2_xattr_get(c, inode, name, buffer, size, handler->flags);
        return bch2_err_class(ret);
 }
 
@@ -380,12 +378,16 @@ static int bch2_xattr_set_handler(const struct xattr_handler *handler,
        struct bch_inode_info *inode = to_bch_ei(vinode);
        struct bch_fs *c = inode->v.i_sb->s_fs_info;
        struct bch_hash_info hash = bch2_hash_info_init(c, &inode->ei_inode);
+       struct bch_inode_unpacked inode_u;
        int ret;
 
-       ret = bch2_trans_do(c, NULL, NULL, 0,
-                       bch2_xattr_set(&trans, inode_inum(inode), &hash,
-                                      name, value, size,
-                                      handler->flags, flags));
+       ret = bch2_trans_run(c,
+               commit_do(trans, NULL, NULL, 0,
+                       bch2_xattr_set(trans, inode_inum(inode), &inode_u,
+                                      &hash, name, value, size,
+                                      handler->flags, flags)) ?:
+               (bch2_inode_update_after_write(trans, inode, &inode_u, ATTR_CTIME), 0));
+
        return bch2_err_class(ret);
 }
 
@@ -494,7 +496,8 @@ struct inode_opt_set {
        bool                    defined;
 };
 
-static int inode_opt_set_fn(struct bch_inode_info *inode,
+static int inode_opt_set_fn(struct btree_trans *trans,
+                           struct bch_inode_info *inode,
                            struct bch_inode_unpacked *bi,
                            void *p)
 {
@@ -589,7 +592,7 @@ err:
             opt_id == Opt_background_target))
                bch2_rebalance_add_work(c, inode->v.i_blocks);
 
-       return ret;
+       return bch2_err_class(ret);
 }
 
 static const struct xattr_handler bch_xattr_bcachefs_handler = {
@@ -618,8 +621,8 @@ static const struct xattr_handler bch_xattr_bcachefs_effective_handler = {
 const struct xattr_handler *bch2_xattr_handlers[] = {
        &bch_xattr_user_handler,
 #ifdef CONFIG_BCACHEFS_POSIX_ACL
-       &posix_acl_access_xattr_handler,
-       &posix_acl_default_xattr_handler,
+       &nop_posix_acl_access,
+       &nop_posix_acl_default,
 #endif
        &bch_xattr_trusted_handler,
        &bch_xattr_security_handler,
@@ -633,9 +636,9 @@ const struct xattr_handler *bch2_xattr_handlers[] = {
 static const struct xattr_handler *bch_xattr_handler_map[] = {
        [KEY_TYPE_XATTR_INDEX_USER]                     = &bch_xattr_user_handler,
        [KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS] =
-               &posix_acl_access_xattr_handler,
+               &nop_posix_acl_access,
        [KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT]        =
-               &posix_acl_default_xattr_handler,
+               &nop_posix_acl_default,
        [KEY_TYPE_XATTR_INDEX_TRUSTED]          = &bch_xattr_trusted_handler,
        [KEY_TYPE_XATTR_INDEX_SECURITY]         = &bch_xattr_security_handler,
 };