diff options
Diffstat (limited to 'fs/ubifs/misc.h')
| -rw-r--r-- | fs/ubifs/misc.h | 159 |
1 files changed, 75 insertions, 84 deletions
diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h index 609232e..4316d3c 100644 --- a/fs/ubifs/misc.h +++ b/fs/ubifs/misc.h @@ -3,18 +3,7 @@ * * Copyright (C) 2006-2008 Nokia Corporation * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 51 - * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * SPDX-License-Identifier: GPL-2.0+ * * Authors: Artem Bityutskiy (Битюцкий Артём) * Adrian Hunter @@ -27,6 +16,7 @@ #ifndef __UBIFS_MISC_H__ #define __UBIFS_MISC_H__ +#define __UBOOT__ /** * ubifs_zn_dirty - check if znode is dirty. * @znode: znode to check @@ -39,6 +29,29 @@ static inline int ubifs_zn_dirty(const struct ubifs_znode *znode) } /** + * ubifs_zn_obsolete - check if znode is obsolete. + * @znode: znode to check + * + * This helper function returns %1 if @znode is obsolete and %0 otherwise. + */ +static inline int ubifs_zn_obsolete(const struct ubifs_znode *znode) +{ + return !!test_bit(OBSOLETE_ZNODE, &znode->flags); +} + +/** + * ubifs_zn_cow - check if znode has to be copied on write. + * @znode: znode to check + * + * This helper function returns %1 if @znode is has COW flag set and %0 + * otherwise. + */ +static inline int ubifs_zn_cow(const struct ubifs_znode *znode) +{ + return !!test_bit(COW_ZNODE, &znode->flags); +} + +/** * ubifs_wake_up_bgt - wake up background thread. * @c: UBIFS file-system description object */ @@ -121,82 +134,27 @@ static inline int ubifs_wbuf_sync(struct ubifs_wbuf *wbuf) return err; } +#ifndef __UBOOT__ /** - * ubifs_leb_unmap - unmap an LEB. - * @c: UBIFS file-system description object - * @lnum: LEB number to unmap - * - * This function returns %0 on success and a negative error code on failure. - */ -static inline int ubifs_leb_unmap(const struct ubifs_info *c, int lnum) -{ - int err; - - if (c->ro_media) - return -EROFS; - err = ubi_leb_unmap(c->ubi, lnum); - if (err) { - ubifs_err("unmap LEB %d failed, error %d", lnum, err); - return err; - } - - return 0; -} - -/** - * ubifs_leb_write - write to a LEB. - * @c: UBIFS file-system description object - * @lnum: LEB number to write - * @buf: buffer to write from - * @offs: offset within LEB to write to - * @len: length to write - * @dtype: data type - * - * This function returns %0 on success and a negative error code on failure. - */ -static inline int ubifs_leb_write(const struct ubifs_info *c, int lnum, - const void *buf, int offs, int len, int dtype) -{ - int err; - - if (c->ro_media) - return -EROFS; - err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype); - if (err) { - ubifs_err("writing %d bytes at %d:%d, error %d", - len, lnum, offs, err); - return err; - } - - return 0; -} - -/** - * ubifs_leb_change - atomic LEB change. - * @c: UBIFS file-system description object - * @lnum: LEB number to write - * @buf: buffer to write from - * @len: length to write - * @dtype: data type + * ubifs_encode_dev - encode device node IDs. + * @dev: UBIFS device node information + * @rdev: device IDs to encode * - * This function returns %0 on success and a negative error code on failure. + * This is a helper function which encodes major/minor numbers of a device node + * into UBIFS device node description. We use standard Linux "new" and "huge" + * encodings. */ -static inline int ubifs_leb_change(const struct ubifs_info *c, int lnum, - const void *buf, int len, int dtype) +static inline int ubifs_encode_dev(union ubifs_dev_desc *dev, dev_t rdev) { - int err; - - if (c->ro_media) - return -EROFS; - err = ubi_leb_change(c->ubi, lnum, buf, len, dtype); - if (err) { - ubifs_err("changing %d bytes in LEB %d, error %d", - len, lnum, err); - return err; + if (new_valid_dev(rdev)) { + dev->new = cpu_to_le32(new_encode_dev(rdev)); + return sizeof(dev->new); + } else { + dev->huge = cpu_to_le64(huge_encode_dev(rdev)); + return sizeof(dev->huge); } - - return 0; } +#endif /** * ubifs_add_dirt - add dirty space to LEB properties. @@ -260,8 +218,24 @@ struct ubifs_branch *ubifs_idx_branch(const struct ubifs_info *c, static inline void *ubifs_idx_key(const struct ubifs_info *c, const struct ubifs_idx_node *idx) { - const __u8 *branch = idx->branches; - return (void *)((struct ubifs_branch *)branch)->key; +#ifndef __UBOOT__ + return (void *)((struct ubifs_branch *)idx->branches)->key; +#else + struct ubifs_branch *tmp; + + tmp = (struct ubifs_branch *)idx->branches; + return (void *)tmp->key; +#endif +} + +/** + * ubifs_current_time - round current time to time granularity. + * @inode: inode + */ +static inline struct timespec ubifs_current_time(struct inode *inode) +{ + return (inode->i_sb->s_time_gran < NSEC_PER_SEC) ? + current_fs_time(inode->i_sb) : CURRENT_TIME_SEC; } /** @@ -308,4 +282,21 @@ static inline void ubifs_release_lprops(struct ubifs_info *c) mutex_unlock(&c->lp_mutex); } +/** + * ubifs_next_log_lnum - switch to the next log LEB. + * @c: UBIFS file-system description object + * @lnum: current log LEB + * + * This helper function returns the log LEB number which goes next after LEB + * 'lnum'. + */ +static inline int ubifs_next_log_lnum(const struct ubifs_info *c, int lnum) +{ + lnum += 1; + if (lnum > c->log_last) + lnum = UBIFS_LOG_LNUM; + + return lnum; +} + #endif /* __UBIFS_MISC_H__ */ |