1 files changed, 161 insertions, 58 deletions

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 8a1ad6cd63c5..c51d0c531213 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -711,12 +711,12 @@ int f2fs_getattr(struct vfsmount *mnt,
 		stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
 	}
 
-	flags = fi->i_flags & F2FS_FL_USER_VISIBLE;
+	flags = fi->i_flags;
 	if (flags & F2FS_APPEND_FL)
 		stat->attributes |= STATX_ATTR_APPEND;
 	if (flags & F2FS_COMPR_FL)
 		stat->attributes |= STATX_ATTR_COMPRESSED;
-	if (f2fs_encrypted_inode(inode))
+	if (IS_ENCRYPTED(inode))
 		stat->attributes |= STATX_ATTR_ENCRYPTED;
 	if (flags & F2FS_IMMUTABLE_FL)
 		stat->attributes |= STATX_ATTR_IMMUTABLE;
@@ -724,7 +724,6 @@ int f2fs_getattr(struct vfsmount *mnt,
 		stat->attributes |= STATX_ATTR_NODUMP;
 
 	stat->attributes_mask |= (STATX_ATTR_APPEND |
-				  STATX_ATTR_COMPRESSED |
 				  STATX_ATTR_ENCRYPTED |
 				  STATX_ATTR_IMMUTABLE |
 				  STATX_ATTR_NODUMP);
@@ -1033,7 +1032,7 @@ next_dnode:
 			!f2fs_is_valid_blkaddr(sbi, *blkaddr,
 					DATA_GENERIC_ENHANCE)) {
 			f2fs_put_dnode(&dn);
-			return -EFAULT;
+			return -EFSCORRUPTED;
 		}
 
 		if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
@@ -1221,7 +1220,7 @@ roll_back:
 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
-	pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+	pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
 	pgoff_t start = offset >> PAGE_SHIFT;
 	pgoff_t end = (offset + len) >> PAGE_SHIFT;
 	int ret;
@@ -1474,7 +1473,7 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
 	pg_start = offset >> PAGE_SHIFT;
 	pg_end = (offset + len) >> PAGE_SHIFT;
 	delta = pg_end - pg_start;
-	idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+	idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
 
 	/* avoid gc operation during block exchange */
 	down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
@@ -1538,7 +1537,12 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
 	if (off_end)
 		map.m_len++;
 
-	err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
+	if (f2fs_is_pinned_file(inode))
+		map.m_seg_type = CURSEG_COLD_DATA;
+
+	err = f2fs_map_blocks(inode, &map, 1, (f2fs_is_pinned_file(inode) ?
+						F2FS_GET_BLOCK_PRE_DIO :
+						F2FS_GET_BLOCK_PRE_AIO));
 	if (err) {
 		pgoff_t last_off;
 
@@ -1655,69 +1659,152 @@ static int f2fs_file_flush(struct file *file, fl_owner_t id)
 	return 0;
 }
 
+static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
+{
+	struct f2fs_inode_info *fi = F2FS_I(inode);
+
+	/* Is it quota file? Do not allow user to mess with it */
+	if (IS_NOQUOTA(inode))
+		return -EPERM;
+
+	fi->i_flags = iflags | (fi->i_flags & ~mask);
+
+	if (fi->i_flags & F2FS_PROJINHERIT_FL)
+		set_inode_flag(inode, FI_PROJ_INHERIT);
+	else
+		clear_inode_flag(inode, FI_PROJ_INHERIT);
+
+	inode->i_ctime = current_time(inode);
+	f2fs_set_inode_flags(inode);
+	f2fs_mark_inode_dirty_sync(inode, true);
+	return 0;
+}
+
+/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
+
+/*
+ * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
+ * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
+ * F2FS_GETTABLE_FS_FL.  To also make it settable via FS_IOC_SETFLAGS, also add
+ * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
+ */
+
+static const struct {
+	u32 iflag;
+	u32 fsflag;
+} f2fs_fsflags_map[] = {
+	{ F2FS_SYNC_FL,		FS_SYNC_FL },
+	{ F2FS_IMMUTABLE_FL,	FS_IMMUTABLE_FL },
+	{ F2FS_APPEND_FL,	FS_APPEND_FL },
+	{ F2FS_NODUMP_FL,	FS_NODUMP_FL },
+	{ F2FS_NOATIME_FL,	FS_NOATIME_FL },
+	{ F2FS_INDEX_FL,	FS_INDEX_FL },
+	{ F2FS_DIRSYNC_FL,	FS_DIRSYNC_FL },
+	{ F2FS_PROJINHERIT_FL,	FS_PROJINHERIT_FL },
+};
+
+#define F2FS_GETTABLE_FS_FL (		\
+		FS_SYNC_FL |		\
+		FS_IMMUTABLE_FL |	\
+		FS_APPEND_FL |		\
+		FS_NODUMP_FL |		\
+		FS_NOATIME_FL |		\
+		FS_INDEX_FL |		\
+		FS_DIRSYNC_FL |		\
+		FS_PROJINHERIT_FL |	\
+		FS_ENCRYPT_FL |		\
+		FS_INLINE_DATA_FL |	\
+		FS_NOCOW_FL)
+
+#define F2FS_SETTABLE_FS_FL (		\
+		FS_SYNC_FL |		\
+		FS_IMMUTABLE_FL |	\
+		FS_APPEND_FL |		\
+		FS_NODUMP_FL |		\
+		FS_NOATIME_FL |		\
+		FS_DIRSYNC_FL |		\
+		FS_PROJINHERIT_FL)
+
+/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
+static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
+{
+	u32 fsflags = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
+		if (iflags & f2fs_fsflags_map[i].iflag)
+			fsflags |= f2fs_fsflags_map[i].fsflag;
+
+	return fsflags;
+}
+
+/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
+static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
+{
+	u32 iflags = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
+		if (fsflags & f2fs_fsflags_map[i].fsflag)
+			iflags |= f2fs_fsflags_map[i].iflag;
+
+	return iflags;
+}
+
 static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
 {
 	struct inode *inode = file_inode(filp);
 	struct f2fs_inode_info *fi = F2FS_I(inode);
-	unsigned int flags = fi->i_flags;
+	u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
 
-	if (f2fs_encrypted_inode(inode))
-		flags |= F2FS_ENCRYPT_FL;
+	if (IS_ENCRYPTED(inode))
+		fsflags |= FS_ENCRYPT_FL;
 	if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
-		flags |= F2FS_INLINE_DATA_FL;
+		fsflags |= FS_INLINE_DATA_FL;
 	if (is_inode_flag_set(inode, FI_PIN_FILE))
-		flags |= F2FS_NOCOW_FL;
+		fsflags |= FS_NOCOW_FL;
 
-	flags &= F2FS_FL_USER_VISIBLE;
+	fsflags &= F2FS_GETTABLE_FS_FL;
 
-	return put_user(flags, (int __user *)arg);
+	return put_user(fsflags, (int __user *)arg);
 }
 
 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
 {
 	struct inode *inode = file_inode(filp);
 	struct f2fs_inode_info *fi = F2FS_I(inode);
-	unsigned int flags;
-	unsigned int oldflags;
+	u32 fsflags, old_fsflags;
+	u32 iflags;
 	int ret;
 
 	if (!inode_owner_or_capable(inode))
 		return -EACCES;
 
-	if (get_user(flags, (int __user *)arg))
+	if (get_user(fsflags, (int __user *)arg))
 		return -EFAULT;
 
+	if (fsflags & ~F2FS_GETTABLE_FS_FL)
+		return -EOPNOTSUPP;
+	fsflags &= F2FS_SETTABLE_FS_FL;
+
+	iflags = f2fs_fsflags_to_iflags(fsflags);
+	if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
+		return -EOPNOTSUPP;
+
 	ret = mnt_want_write_file(filp);
 	if (ret)
 		return ret;
 
 	inode_lock(inode);
 
-	/* Is it quota file? Do not allow user to mess with it */
-	if (IS_NOQUOTA(inode)) {
-		ret = -EPERM;
-		goto unlock_out;
-	}
-
-	flags = f2fs_mask_flags(inode->i_mode, flags);
-
-	oldflags = fi->i_flags;
-
-	if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) {
-		if (!capable(CAP_LINUX_IMMUTABLE)) {
-			ret = -EPERM;
-			goto unlock_out;
-		}
-	}
-
-	flags = flags & (F2FS_FL_USER_MODIFIABLE);
-	flags |= oldflags & ~(F2FS_FL_USER_MODIFIABLE);
-	fi->i_flags = flags;
+	old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
+	ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
+	if (ret)
+		goto out;
 
-	inode->i_ctime = current_time(inode);
-	f2fs_set_inode_flags(inode);
-	f2fs_mark_inode_dirty_sync(inode, false);
-unlock_out:
+	ret = f2fs_setflags_common(inode, iflags,
+			f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
+out:
 	inode_unlock(inode);
 	mnt_drop_write_file(filp);
 	return ret;
@@ -1764,9 +1851,8 @@ static int f2fs_ioc_start_atomic_write(struct file *filp)
 	 * f2fs_is_atomic_file.
 	 */
 	if (get_dirty_pages(inode))
-		f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
-		"Unexpected flush for atomic writes: ino=%lu, npages=%u",
-					inode->i_ino, get_dirty_pages(inode));
+		f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
+			  inode->i_ino, get_dirty_pages(inode));
 	ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
 	if (ret) {
 		up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
@@ -2201,8 +2287,7 @@ static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
 		return -EROFS;
 
 	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
-		f2fs_msg(sbi->sb, KERN_INFO,
-			"Skipping Checkpoint. Checkpoints currently disabled.");
+		f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
 		return -EINVAL;
 	}
 
@@ -2291,7 +2376,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
 	if (!fragmented)
 		goto out;
 
-	sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
+	sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
 
 	/*
 	 * make sure there are enough free section for LFS allocation, this can
@@ -2587,10 +2672,8 @@ static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
 
 	if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
 			__is_large_section(sbi)) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"Can't flush %u in %d for segs_per_sec %u != 1",
-				range.dev_num, sbi->s_ndevs,
-				sbi->segs_per_sec);
+		f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
+			  range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
 		return -EINVAL;
 	}
 
@@ -2649,10 +2732,9 @@ int f2fs_pin_file_control(struct inode *inode, bool inc)
 				fi->i_gc_failures[GC_FAILURE_PIN] + 1);
 
 	if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
-		f2fs_msg(sbi->sb, KERN_WARNING,
-			"%s: Enable GC = ino %lx after %x GC trials",
-			__func__, inode->i_ino,
-			fi->i_gc_failures[GC_FAILURE_PIN]);
+		f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
+			  __func__, inode->i_ino,
+			  fi->i_gc_failures[GC_FAILURE_PIN]);
 		clear_inode_flag(inode, FI_PIN_FILE);
 		return -EAGAIN;
 	}
@@ -2665,9 +2747,6 @@ static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
 	__u32 pin;
 	int ret = 0;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	if (get_user(pin, (__u32 __user *)arg))
 		return -EFAULT;
 
@@ -2760,6 +2839,27 @@ static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
 	return f2fs_precache_extents(file_inode(filp));
 }
 
+static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
+	__u64 block_count;
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	if (f2fs_readonly(sbi->sb))
+		return -EROFS;
+
+	if (copy_from_user(&block_count, (void __user *)arg,
+			   sizeof(block_count)))
+		return -EFAULT;
+
+	ret = f2fs_resize_fs(sbi, block_count);
+
+	return ret;
+}
+
 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
@@ -2812,6 +2912,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		return f2fs_ioc_set_pin_file(filp, arg);
 	case F2FS_IOC_PRECACHE_EXTENTS:
 		return f2fs_ioc_precache_extents(filp, arg);
+	case F2FS_IOC_RESIZE_FS:
+		return f2fs_ioc_resize_fs(filp, arg);
 	default:
 		return -ENOTTY;
 	}
@@ -2928,6 +3030,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	case F2FS_IOC_GET_PIN_FILE:
 	case F2FS_IOC_SET_PIN_FILE:
 	case F2FS_IOC_PRECACHE_EXTENTS:
+	case F2FS_IOC_RESIZE_FS:
 		break;
 	default:
 		return -ENOIOCTLCMD;