diff options
Diffstat (limited to 'innobase/include/os0file.h')
| -rw-r--r-- | innobase/include/os0file.h | 105 |
1 files changed, 99 insertions, 6 deletions
diff --git a/innobase/include/os0file.h b/innobase/include/os0file.h index 5c52f0e92bf..9f1c18829c4 100644 --- a/innobase/include/os0file.h +++ b/innobase/include/os0file.h @@ -11,9 +11,11 @@ Created 10/21/1995 Heikki Tuuri #include "univ.i" +#ifndef __WIN__ +#include <dirent.h> +#include <sys/stat.h> +#endif -/* If the following is set to TRUE, we do not call os_file_flush in every -os_file_write */ extern ibool os_do_not_call_flush_at_each_write; extern ibool os_has_said_disk_full; extern ibool os_aio_print_debug; @@ -57,6 +59,7 @@ log. */ #define OS_FILE_OPEN 51 #define OS_FILE_CREATE 52 #define OS_FILE_OVERWRITE 53 +#define OS_FILE_OPEN_RAW 54 #define OS_FILE_READ_ONLY 333 #define OS_FILE_READ_WRITE 444 @@ -117,6 +120,36 @@ extern ulint os_n_file_reads; extern ulint os_n_file_writes; extern ulint os_n_fsyncs; +/* File types for directory entry data type */ + +enum os_file_type_enum{ + OS_FILE_TYPE_UNKNOWN = 0, + OS_FILE_TYPE_FILE, /* regular file */ + OS_FILE_TYPE_DIR, /* directory */ + OS_FILE_TYPE_LINK /* symbolic link */ +}; +typedef enum os_file_type_enum os_file_type_t; + +/* Maximum path string length in bytes when referring to tables with in the +'./databasename/tablename.ibd' path format; we can allocate at least 2 buffers +of this size from the thread stack; that is why this should not be made much +bigger than 4000 bytes */ +#define OS_FILE_MAX_PATH 4000 + +/* Struct used in fetching information of a file in a directory */ +typedef struct os_file_stat_struct os_file_stat_t; +struct os_file_stat_struct{ + char name[OS_FILE_MAX_PATH]; /* path to a file */ + os_file_type_t type; /* file type */ + ib_longlong size; /* file size */ +}; + +#ifdef __WIN___ +typedef HANDLE os_file_dir_t; /* directory stream */ +#else +typedef DIR* os_file_dir_t; /* directory stream */ +#endif + /*************************************************************************** Gets the operating system version. Currently works only on Windows. */ @@ -130,6 +163,42 @@ Creates the seek mutexes used in positioned reads and writes. */ void os_io_init_simple(void); /*===================*/ +/*************************************************************************** +The os_file_opendir() function opens a directory stream corresponding to the +directory named by the dirname argument. The directory stream is positioned +at the first entry. In both Unix and Windows we automatically skip the '.' +and '..' items at the start of the directory listing. */ + +os_file_dir_t +os_file_opendir( +/*============*/ + /* out: directory stream, NULL if error */ + char* dirname, /* in: directory name; it must not contain + a trailing '\' or '/' */ + ibool error_is_fatal);/* in: TRUE if we should treat an error as a + fatal error; if we try to open symlinks then + we do not wish a fatal error if it happens + not to be a directory */ +/*************************************************************************** +Closes a directory stream. */ + +int +os_file_closedir( +/*=============*/ + /* out: 0 if success, -1 if failure */ + os_file_dir_t dir); /* in: directory stream */ +/*************************************************************************** +This function returns information of the next file in the directory. We jump +over the '.' and '..' entries in the directory. */ + +int +os_file_readdir_next_file( +/*======================*/ + /* out: 0 if ok, -1 if error, 1 if at the end + of the directory */ + char* dirname,/* in: directory name or path */ + os_file_dir_t dir, /* in: directory stream */ + os_file_stat_t* info); /* in/out: buffer where the info is returned */ /******************************************************************** A simple function to open or create a file. */ @@ -173,7 +242,9 @@ os_file_create( ulint create_mode,/* in: OS_FILE_OPEN if an existing file is opened (if does not exist, error), or OS_FILE_CREATE if a new file is created (if exists, error), OS_FILE_OVERWRITE - if a new file is created or an old overwritten */ + if a new file is created or an old overwritten; + OS_FILE_OPEN_RAW, if a raw device or disk partition + should be opened */ ulint purpose,/* in: OS_FILE_AIO, if asynchronous, non-buffered i/o is desired, OS_FILE_NORMAL, if any normal file; NOTE that it also depends on type, os_aio_.. and srv_.. @@ -183,6 +254,25 @@ os_file_create( ulint type, /* in: OS_DATA_FILE or OS_LOG_FILE */ ibool* success);/* out: TRUE if succeed, FALSE if error */ /*************************************************************************** +Deletes a file. The file has to be closed before calling this. */ + +ibool +os_file_delete( +/*===========*/ + /* out: TRUE if success */ + char* name); /* in: file path as a null-terminated string */ +/*************************************************************************** +Renames a file (can also move it to another directory). It is safest that the +file is closed before calling this function. */ + +ibool +os_file_rename( +/*===========*/ + /* out: TRUE if success */ + char* oldpath, /* in: old file path as a null-terminated + string */ + char* newpath); /* in: new file path */ +/*************************************************************************** Closes a file handle. In case of error, error number can be retrieved with os_file_get_last_error. */ @@ -238,9 +328,12 @@ overwrite the error number). If the number is not known to this program, the OS error number + 100 is returned. */ ulint -os_file_get_last_error(void); -/*========================*/ - /* out: error number, or OS error number + 100 */ +os_file_get_last_error( +/*===================*/ + /* out: error number, or OS error + number + 100 */ + ibool report_all_errors); /* in: TRUE if we want an error message + printed of all errors */ /*********************************************************************** Requests a synchronous read operation. */ |