"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "fsmove/src/io/io_posix.hh" between
fstransform-0.9.3-src.tar.gz and fstransform-0.9.4.tar.gz

About: fstransform is a tool to change a file-system from one format to another, for example from jfs, xfs, or reiser to ext2, ext3, or ext4, in-place and without the need for backup.

io_posix.hh  (fstransform-0.9.3-src)	:	io_posix.hh  (fstransform-0.9.4)
skipping to change at line 58		skipping to change at line 58
*/		*/
APPROX_BLOCK_SIZE = 4096,		APPROX_BLOCK_SIZE = 4096,
/**		/**
* APPROX_INODE_COST is an approximated disk space used by an inode		* APPROX_INODE_COST is an approximated disk space used by an inode
* (directory, file or special device) even if it contains no actual da ta.		* (directory, file or special device) even if it contains no actual da ta.
*/		*/
APPROX_INODE_COST = 256,		APPROX_INODE_COST = 256,
};		};
/**		/**
* fill 'disk_stat' with information about the file-system containing 'path'
.
* return error if statvfs() fails or if free disk space becomes critically
low
*/
int disk_stat(const char * path, fm_disk_stat & disk_stat);
/**
* return true if estimated free space is comfortably high enough to write ' bytes_to_write'		* return true if estimated free space is comfortably high enough to write ' bytes_to_write'
* if first_check is true, does a more conservative estimation, requiring tw ice more free space than normal		* if first_check is true, does a more conservative estimation, requiring tw ice more free space than normal
*/		*/
bool enough_free_space(ft_uoff bytes_to_write = 0, bool first_check = false) ;		bool enough_free_space(ft_uoff bytes_to_write = 0, bool first_check = false) ;
/**		/**
* add bytes_just_written to bytes_copied_since_last_check.		* call sync(), then call disk_stat() twice: one time on source_root() and a
*		nother on target_root().
* if enough_free_space() returns false,		* return error if statvfs() fails or if free disk space becomes critical
* also call check_free_space() and reset bytes_copied_since_last_check to z		ly low
ero
*/		*/
int periodic_check_free_space(ft_size bytes_just_written = APPROX_INODE_COST , ft_uoff bytes_to_write = 0);		int check_free_space();
/**		/**
* call disk_stat() twice: one time on source_root() and another on target_r oot().		* fill 'disk_stat' with information about the file-system containing 'path' .
* return error if statvfs() fails or if free disk space becomes critically low		* return error if statvfs() fails or if free disk space becomes critically low
*/		*/
int check_free_space();		int disk_stat(const char * path, fm_disk_stat & disk_stat);
/**		/**
* use some file-system specific trickery to try and free some space.		* use some file-system specific trickery to try and free some space.
* currently, it runs 'xfs_fsr <path>' which can free some space on 'xfs' fi le-systems		* currently, it runs 'xfs_fsr <path>' which can free some space on 'xfs' fi le-systems
*/		*/
void try_to_make_free_space(const char * path);		void try_to_make_free_space(const char * path);
/**		/**
* fill 'stat' with information about the file/directory/special-device 'pat h'		* fill 'stat' with information about the file/directory/special-device 'pat h'
*/		*/
int stat(const ft_string & path, ft_stat & stat);		int stat(const ft_string & path, ft_stat & stat);
/**		/**
* move a single file/socket/device or a whole directory tree		* move a single file/socket/device or a whole directory tree
*/		*/
int move(const ft_string & source_path, const ft_string & target_path);		int move(const ft_string & source_path, const ft_string & target_path);
/**		/**
* move the single regurlar file 'source_path' to 'target_path'.		* try to rename a file, directory or special-device from 'source_path' to '
		target_path'.
		*/
		int move_rename(const char * source, const char * target);
		/**
		* move the single regular file 'source_path' to 'target_path'.
*/		*/
int move_file(const ft_string & source_path, const ft_stat & source_stat, co nst ft_string & target_path);		int move_file(const ft_string & source_path, const ft_stat & source_stat, co nst ft_string & target_path);
/**		/**
* move the single special-device 'source_path' to 'target_path'.		* move the single special-device 'source_path' to 'target_path'.
*/		*/
int move_special(const ft_string & source_path, const ft_stat & source_stat, const ft_string & target_path);		int move_special(const ft_string & source_path, const ft_stat & source_stat, const ft_string & target_path);
/**		/**
* try to rename a file, directory or special-device from 'source_path' to ' target_path'.		* move the single directory 'source_path' to 'target_path'.
*/		*/
int move_rename(const char * source, const char * target);		int move_dir(const ft_string & source_path, const ft_stat & source_stat, con st ft_string & target_path);
/**		/**
* forward or backward copy file/stream contents from in_fd to out_fd.		* forward or backward copy file/stream contents from in_fd to out_fd.
*		*
* if disk space is low, we copy backward and progressively truncate in_fd t o conserve space:		* if disk space is low, we copy backward and progressively truncate in_fd t o conserve space:
* results in heavy fragmentation on target file, but at least we can contin ue		* results in heavy fragmentation on target file, but at least we can contin ue
*/		*/
int copy_stream(int in_fd, int out_fd, const ft_stat & stat, const char * so urce, const char * target);		int copy_stream(int in_fd, int out_fd, const ft_stat & stat, const char * so urce, const char * target);
/**		/**
skipping to change at line 177		skipping to change at line 174
int full_write(int out_fd, const char * data, ft_size len, const char * targ et_path);		int full_write(int out_fd, const char * data, ft_size len, const char * targ et_path);
/**		/**
* check inode_cache for hard links and recreate them.		* check inode_cache for hard links and recreate them.
* must be called if and only if stat.st_nlink > 1.		* must be called if and only if stat.st_nlink > 1.
*		*
* returns EAGAIN if inode was not in inode_cache		* returns EAGAIN if inode was not in inode_cache
*/		*/
int hard_link(const ft_stat & stat, const ft_string & target_path);		int hard_link(const ft_stat & stat, const ft_string & target_path);
/**
* copy the permission bits, owner/group and timestamps from 'stat' to 'targ
et'
*/
int copy_stat(const char * target, const ft_stat & stat);
/** create a target directory */		/** create a target directory */
int create_dir(const ft_string & path);		int create_dir(const ft_string & path);
/**		/**
* remove a source directory, which must be empty
* exception: will not remove '/lost+found' directory inside source_root()
*/
int remove_dir(const ft_string & path);
/**
* return true if path is the source directory lost+found.		* return true if path is the source directory lost+found.
* Treated specially because it is emptied but not removed.		* Treated specially because it is emptied but not removed.
*/		*/
bool is_source_lost_found(const ft_string & path) const;		bool is_source_lost_found(const ft_string & path) const;
/**		/**
* return true if path is the target directory lost+found.		* return true if path is the target directory lost+found.
* Treated specially because it is allowed to exist already.		* Treated specially because it is allowed to exist already.
*/		*/
bool is_target_lost_found(const ft_string & path) const;		bool is_target_lost_found(const ft_string & path) const;
		protected:
		/** call ::sync(). slow, but needed to get accurate disk stats when loop dev
		ices are involved */
		virtual void sync();
		/**
		* add bytes_just_written to bytes_copied_since_last_check.
		*
		* if enough_free_space() returns false,
		* also call check_free_space() and reset bytes_copied_since_last_check to z
		ero
		*/
		int periodic_check_free_space(ft_uoff bytes_just_written = APPROX_INODE_COST
		, ft_uoff bytes_to_write = 0);
		/**
		* copy the permission bits, owner/group and timestamps from 'stat' to 'targ
		et'
		*/
		int copy_stat(const char * target, const ft_stat & stat);
		/**
		* copy the contents of single regular file 'source_path' to 'target_path'.
		*/
		virtual int copy_file_contents(const ft_string & source_path, const ft_stat
		& source_stat, const ft_string & target_path);
		/**
		* remove a regular file inside source directory
		*/
		virtual int remove_file(const char * source_path);
		/**
		* remove a special file inside source directory
		*/
		virtual int remove_special(const char * source_path);
		/**
		* remove a source directory, which must be empty
		* exception: will not remove '/lost+found' directory inside source_root()
		*/
		virtual int remove_dir(const ft_string & path);
public:		public:
/** constructor */		/** constructor */
fm_io_posix();		fm_io_posix();
/** destructor. calls close() */		/** destructor. calls close() */
virtual ~fm_io_posix();		virtual ~fm_io_posix();
/** return true if this fr_io_posix is currently (and correctly) open */		/** return true if this fr_io_posix is currently (and correctly) open */
virtual bool is_open() const;		virtual bool is_open() const;
End of changes. 11 change blocks.
31 lines changed or deleted		59 lines changed or added

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