diff options
| -rw-r--r-- | fs/ocfs2/file.c | 77 |
1 files changed, 59 insertions, 18 deletions
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 004c2abbc732..5727cd18302a 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -34,6 +34,7 @@ #include <linux/splice.h> #include <linux/mount.h> #include <linux/writeback.h> +#include <linux/falloc.h> #define MLOG_MASK_PREFIX ML_INODE #include <cluster/masklog.h> @@ -1504,30 +1505,19 @@ out: /* * Parts of this function taken from xfs_change_file_space() */ -int ocfs2_change_file_space(struct file *file, unsigned int cmd, - struct ocfs2_space_resv *sr) +static int __ocfs2_change_file_space(struct file *file, struct inode *inode, + loff_t f_pos, unsigned int cmd, + struct ocfs2_space_resv *sr, + int change_size) { int ret; s64 llen; - struct inode *inode = file->f_path.dentry->d_inode; + loff_t size; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct buffer_head *di_bh = NULL; handle_t *handle; unsigned long long max_off = ocfs2_max_file_offset(inode->i_sb->s_blocksize_bits); - if ((cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) && - !ocfs2_writes_unwritten_extents(osb)) - return -ENOTTY; - else if ((cmd == OCFS2_IOC_UNRESVSP || cmd == OCFS2_IOC_UNRESVSP64) && - !ocfs2_sparse_alloc(osb)) - return -ENOTTY; - - if (!S_ISREG(inode->i_mode)) - return -EINVAL; - - if (!(file->f_mode & FMODE_WRITE)) - return -EBADF; - if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) return -EROFS; @@ -1557,7 +1547,7 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd, case 0: /*SEEK_SET*/ break; case 1: /*SEEK_CUR*/ - sr->l_start += file->f_pos; + sr->l_start += f_pos; break; case 2: /*SEEK_END*/ sr->l_start += i_size_read(inode); @@ -1577,6 +1567,7 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd, ret = -EINVAL; goto out_meta_unlock; } + size = sr->l_start + sr->l_len; if (cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) { if (sr->l_len <= 0) { @@ -1585,7 +1576,7 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd, } } - if (should_remove_suid(file->f_path.dentry)) { + if (file && should_remove_suid(file->f_path.dentry)) { ret = __ocfs2_write_remove_suid(inode, di_bh); if (ret) { mlog_errno(ret); @@ -1628,6 +1619,9 @@ int ocfs2_change_file_space(struct file *file, unsigned int cmd, goto out_meta_unlock; } + if (change_size && i_size_read(inode) < size) + i_size_write(inode, size); + inode->i_ctime = inode->i_mtime = CURRENT_TIME; ret = ocfs2_mark_inode_dirty(handle, inode, di_bh); if (ret < 0) @@ -1646,6 +1640,52 @@ out: return ret; } +int ocfs2_change_file_space(struct file *file, unsigned int cmd, + struct ocfs2_space_resv *sr) +{ + struct inode *inode = file->f_path.dentry->d_inode; + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);; + + if ((cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) && + !ocfs2_writes_unwritten_extents(osb)) + return -ENOTTY; + else if ((cmd == OCFS2_IOC_UNRESVSP || cmd == OCFS2_IOC_UNRESVSP64) && + !ocfs2_sparse_alloc(osb)) + return -ENOTTY; + + if (!S_ISREG(inode->i_mode)) + return -EINVAL; + + if (!(file->f_mode & FMODE_WRITE)) + return -EBADF; + + return __ocfs2_change_file_space(file, inode, file->f_pos, cmd, sr, 0); +} + +static long ocfs2_fallocate(struct inode *inode, int mode, loff_t offset, + loff_t len) +{ + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); + struct ocfs2_space_resv sr; + int change_size = 1; + + if (!ocfs2_writes_unwritten_extents(osb)) + return -EOPNOTSUPP; + + if (S_ISDIR(inode->i_mode)) + return -ENODEV; + + if (mode & FALLOC_FL_KEEP_SIZE) + change_size = 0; + + sr.l_whence = 0; + sr.l_start = (s64)offset; + sr.l_len = (s64)len; + + return __ocfs2_change_file_space(NULL, inode, offset, + OCFS2_IOC_RESVSP64, &sr, change_size); +} + static int ocfs2_prepare_inode_for_write(struct dentry *dentry, loff_t *ppos, size_t count, @@ -2312,6 +2352,7 @@ const struct inode_operations ocfs2_file_iops = { .setattr = ocfs2_setattr, .getattr = ocfs2_getattr, .permission = ocfs2_permission, + .fallocate = ocfs2_fallocate, }; const struct inode_operations ocfs2_special_file_iops = { |