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+/* Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ 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 */
+
+#ifndef _my_sys_h
+#define _my_sys_h
+
+#include "my_global.h" /* C_MODE_START, C_MODE_END */
+#include "m_ctype.h" /* for CHARSET_INFO */
+
+#include "my_thread.h" /* Needed for psi.h */
+#include "mysql/psi/psi.h"
+#include "mysql/service_mysql_alloc.h"
+#include "mysql/psi/mysql_memory.h"
+#include "mysql/psi/mysql_thread.h"
+
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+#ifdef _WIN32
+#include <malloc.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <sys/stat.h>
+
+C_MODE_START
+
+#ifdef HAVE_VALGRIND
+# include <valgrind/valgrind.h>
+# define MEM_MALLOCLIKE_BLOCK(p1, p2, p3, p4) VALGRIND_MALLOCLIKE_BLOCK(p1, p2, p3, p4)
+# define MEM_FREELIKE_BLOCK(p1, p2) VALGRIND_FREELIKE_BLOCK(p1, p2)
+# include <valgrind/memcheck.h>
+# define MEM_UNDEFINED(a,len) VALGRIND_MAKE_MEM_UNDEFINED(a,len)
+# define MEM_NOACCESS(a,len) VALGRIND_MAKE_MEM_NOACCESS(a,len)
+# define MEM_CHECK_ADDRESSABLE(a,len) VALGRIND_CHECK_MEM_IS_ADDRESSABLE(a,len)
+#else /* HAVE_VALGRIND */
+# define MEM_MALLOCLIKE_BLOCK(p1, p2, p3, p4) do {} while (0)
+# define MEM_FREELIKE_BLOCK(p1, p2) do {} while (0)
+# define MEM_UNDEFINED(a,len) ((void) 0)
+# define MEM_NOACCESS(a,len) ((void) 0)
+# define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)
+#endif /* HAVE_VALGRIND */
+
+#include <typelib.h>
+
+#define MY_INIT(name) { my_progname= name; my_init(); }
+
+/**
+ Max length of an error message generated by mysys utilities.
+ Some mysys functions produce error messages. These mostly go
+ to stderr.
+ This constant defines the size of the buffer used to format
+ the message. It should be kept in sync with MYSQL_ERRMSG_SIZE,
+ since sometimes mysys errors are stored in the server diagnostics
+ area, and we would like to avoid unexpected truncation.
+*/
+#define MYSYS_ERRMSG_SIZE (512)
+#define MYSYS_STRERROR_SIZE (128)
+
+#define MY_FILE_ERROR ((size_t) -1)
+
+ /* General bitmaps for my_func's */
+#define MY_FFNF 1 /* Fatal if file not found */
+#define MY_FNABP 2 /* Fatal if not all bytes read/writen */
+#define MY_NABP 4 /* Error if not all bytes read/writen */
+#define MY_FAE 8 /* Fatal if any error */
+#define MY_WME 16 /* Write message on error */
+#define MY_WAIT_IF_FULL 32 /* Wait and try again if disk full error */
+#define MY_IGNORE_BADFD 32 /* my_sync: ignore 'bad descriptor' errors */
+#define MY_SYNC_DIR 8192 /* my_create/delete/rename: sync directory */
+#define MY_UNUSED 64 /* Unused (was support for RAID) */
+#define MY_FULL_IO 512 /* For my_read - loop intil I/O is complete */
+#define MY_DONT_CHECK_FILESIZE 128 /* Option to init_io_cache() */
+#define MY_LINK_WARNING 32 /* my_redel() gives warning if links */
+#define MY_COPYTIME 64 /* my_redel() copys time */
+#define MY_DELETE_OLD 256 /* my_create_with_symlink() */
+#define MY_RESOLVE_LINK 128 /* my_realpath(); Only resolve links */
+#define MY_HOLD_ORIGINAL_MODES 128 /* my_copy() holds to file modes */
+#define MY_REDEL_MAKE_BACKUP 256
+#define MY_REDEL_NO_COPY_STAT 512 /* my_redel() doesn't call my_copystat() */
+#define MY_SEEK_NOT_DONE 32 /* my_lock may have to do a seek */
+#define MY_DONT_WAIT 64 /* my_lock() don't wait if can't lock */
+#define MY_ZEROFILL 32 /* my_malloc(), fill array with zero */
+#define MY_ALLOW_ZERO_PTR 64 /* my_realloc() ; zero ptr -> malloc */
+#define MY_FREE_ON_ERROR 128 /* my_realloc() ; Free old ptr on error */
+#define MY_HOLD_ON_ERROR 256 /* my_realloc() ; Return old ptr on error */
+#define MY_DONT_OVERWRITE_FILE 1024 /* my_copy: Don't overwrite file */
+#define MY_THREADSAFE 2048 /* my_seek(): lock fd mutex */
+#define MY_SYNC 4096 /* my_copy(): sync dst file */
+
+#define MYF_RW MYF(MY_WME+MY_NABP) /* For my_read & my_write */
+
+#define MY_CHECK_ERROR 1 /* Params to my_end; Check open-close */
+#define MY_GIVE_INFO 2 /* Give time info about process*/
+#define MY_DONT_FREE_DBUG 4 /* Do not call DBUG_END() in my_end() */
+
+/* Flags for my_error() */
+#define ME_BELL 4 /* DEPRECATED: Ring bell then printing message */
+#define ME_ERRORLOG 64 /* Write the error message to error log */
+#define ME_FATALERROR 1024 /* Fatal statement error */
+
+ /* Bits in last argument to fn_format */
+#define MY_REPLACE_DIR 1 /* replace dir in name with 'dir' */
+#define MY_REPLACE_EXT 2 /* replace extension with 'ext' */
+#define MY_UNPACK_FILENAME 4 /* Unpack name (~ -> home) */
+#define MY_PACK_FILENAME 8 /* Pack name (home -> ~) */
+#define MY_RESOLVE_SYMLINKS 16 /* Resolve all symbolic links */
+#define MY_RETURN_REAL_PATH 32 /* return full path for file */
+#define MY_SAFE_PATH 64 /* Return NULL if too long path */
+#define MY_RELATIVE_PATH 128 /* name is relative to 'dir' */
+#define MY_APPEND_EXT 256 /* add 'ext' as additional extension*/
+
+
+ /* My seek flags */
+#define MY_SEEK_SET 0
+#define MY_SEEK_CUR 1
+#define MY_SEEK_END 2
+
+ /* Some constants */
+#define MY_WAIT_FOR_USER_TO_FIX_PANIC 60 /* in seconds */
+#define MY_WAIT_GIVE_USER_A_MESSAGE 10 /* Every 10 times of prev */
+#define MIN_COMPRESS_LENGTH 50 /* Don't compress small bl. */
+#define DFLT_INIT_HITS 3
+
+ /* root_alloc flags */
+#define MY_KEEP_PREALLOC 1
+#define MY_MARK_BLOCKS_FREE 2 /* move used to free list and reuse them */
+
+ /* Internal error numbers (for assembler functions) */
+#define MY_ERRNO_EDOM 33
+#define MY_ERRNO_ERANGE 34
+
+ /* Bits for get_date timeflag */
+#define GETDATE_DATE_TIME 1
+#define GETDATE_SHORT_DATE 2
+#define GETDATE_HHMMSSTIME 4
+#define GETDATE_GMT 8
+#define GETDATE_FIXEDLENGTH 16
+
+ /* defines when allocating data */
+extern void *my_multi_malloc(PSI_memory_key key, myf flags, ...);
+
+/*
+ Switch to my_malloc() if the memory block to be allocated is bigger than
+ max_alloca_sz.
+*/
+extern PSI_memory_key key_memory_max_alloca;
+#define my_safe_alloca(size, max_alloca_sz) ((size <= max_alloca_sz) ? \
+ my_alloca(size) : \
+ my_malloc(key_memory_max_alloca, size, MYF(0)))
+#define my_safe_afree(ptr, size, max_alloca_sz) if (size > max_alloca_sz) \
+ my_free(ptr)
+
+#if !defined(DBUG_OFF) || defined(HAVE_VALGRIND)
+/**
+ Put bad content in memory to be sure it will segfault if dereferenced.
+ With Valgrind, verify that memory is addressable, and mark it undefined.
+ We cache value of B because if B is expression which depends on A, memset()
+ trashes value of B.
+*/
+#define TRASH(A,B) do { \
+ const size_t l= (B); \
+ MEM_CHECK_ADDRESSABLE(A, l); \
+ memset(A, 0x8F, l); \
+ MEM_UNDEFINED(A, l); \
+ } while (0)
+#else
+#define TRASH(A,B) do {} while(0)
+#endif
+#if defined(ENABLED_DEBUG_SYNC)
+extern void (*debug_sync_C_callback_ptr)(const char *, size_t);
+#define DEBUG_SYNC_C(_sync_point_name_) do { \
+ if (debug_sync_C_callback_ptr != NULL) \
+ (*debug_sync_C_callback_ptr)(STRING_WITH_LEN(_sync_point_name_)); } \
+ while(0)
+#define DEBUG_SYNC_C_IF_THD(thd, _sync_point_name_) do { \
+ if (debug_sync_C_callback_ptr != NULL && thd) \
+ (*debug_sync_C_callback_ptr)(STRING_WITH_LEN(_sync_point_name_)); } \
+ while(0)
+#else
+#define DEBUG_SYNC_C(_sync_point_name_)
+#define DEBUG_SYNC_C_IF_THD(thd, _sync_point_name_)
+#endif /* defined(ENABLED_DEBUG_SYNC) */
+
+#ifdef HAVE_LINUX_LARGE_PAGES
+extern uint my_get_large_page_size(void);
+extern uchar * my_large_malloc(PSI_memory_key key, size_t size, myf my_flags);
+extern void my_large_free(uchar *ptr);
+extern my_bool my_use_large_pages;
+extern uint my_large_page_size;
+#else
+#define my_get_large_page_size() (0)
+#define my_large_malloc(A,B,C) my_malloc((A),(B),(C))
+#define my_large_free(A) my_free((A))
+#endif /* HAVE_LINUX_LARGE_PAGES */
+
+#define my_alloca(SZ) alloca((size_t) (SZ))
+
+#include <errno.h> /* errno is a define */
+
+extern char *home_dir; /* Home directory for user */
+extern const char *my_progname; /* program-name (printed in errors) */
+extern char curr_dir[]; /* Current directory for user */
+extern void (*error_handler_hook)(uint my_err, const char *str,myf MyFlags);
+extern void (*fatal_error_handler_hook)(uint my_err, const char *str,
+ myf MyFlags);
+extern void (*local_message_hook)(enum loglevel ll,
+ const char *format, va_list args);
+extern uint my_file_limit;
+extern MYSQL_PLUGIN_IMPORT ulong my_thread_stack_size;
+
+/*
+ Hooks for reporting execution stage information. The server implementation
+ of these will also set THD::current_cond/current_mutex.
+ By having hooks, we avoid direct dependencies on server code.
+*/
+extern void (*enter_cond_hook)(void *opaque_thd,
+ mysql_cond_t *cond,
+ mysql_mutex_t *mutex,
+ const PSI_stage_info *stage,
+ PSI_stage_info *old_stage,
+ const char *src_function,
+ const char *src_file,
+ int src_line);
+
+extern void (*exit_cond_hook)(void *opaque_thd,
+ const PSI_stage_info *stage,
+ const char *src_function,
+ const char *src_file,
+ int src_line);
+
+/*
+ Hook for checking if the thread has been killed.
+*/
+extern int (*is_killed_hook)(const void *opaque_thd);
+
+/* charsets */
+#define MY_ALL_CHARSETS_SIZE 2048
+extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *default_charset_info;
+extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *all_charsets[MY_ALL_CHARSETS_SIZE];
+extern CHARSET_INFO compiled_charsets[];
+
+/* statistics */
+extern ulong my_file_opened,my_stream_opened, my_tmp_file_created;
+extern ulong my_file_total_opened;
+extern my_bool my_init_done;
+
+extern MYSQL_PLUGIN_IMPORT int my_umask; /* Default creation mask */
+extern int my_umask_dir;
+
+extern ulong my_default_record_cache_size;
+extern my_bool my_disable_locking,
+ my_enable_symlinks;
+extern char wild_many,wild_one,wild_prefix;
+extern const char *charsets_dir;
+
+enum cache_type
+{
+ TYPE_NOT_SET= 0, READ_CACHE, WRITE_CACHE,
+ SEQ_READ_APPEND /* sequential read or append */,
+ READ_FIFO, READ_NET,WRITE_NET};
+
+enum flush_type
+{
+ FLUSH_KEEP, /* flush block and keep it in the cache */
+ FLUSH_RELEASE, /* flush block and remove it from the cache */
+ FLUSH_IGNORE_CHANGED, /* remove block from the cache */
+ /*
+ As my_disable_flush_pagecache_blocks is always 0, the following option
+ is strictly equivalent to FLUSH_KEEP
+ */
+ FLUSH_FORCE_WRITE
+};
+
+enum file_type
+{
+ UNOPEN = 0, FILE_BY_OPEN, FILE_BY_CREATE, STREAM_BY_FOPEN, STREAM_BY_FDOPEN,
+ FILE_BY_MKSTEMP, FILE_BY_DUP
+};
+
+struct st_my_file_info
+{
+ char *name;
+#ifdef _WIN32
+ HANDLE fhandle; /* win32 file handle */
+ int oflag; /* open flags, e.g O_APPEND */
+#endif
+ enum file_type type;
+};
+
+extern struct st_my_file_info *my_file_info;
+
+/* needed for client-only build */
+#ifndef PSI_FILE_KEY_DEFINED
+typedef unsigned int PSI_file_key;
+#define PSI_FILE_KEY_DEFINED
+#endif
+
+typedef struct st_dynamic_array
+{
+ uchar *buffer;
+ uint elements,max_element;
+ uint alloc_increment;
+ uint size_of_element;
+ PSI_memory_key m_psi_key;
+} DYNAMIC_ARRAY;
+
+typedef struct st_my_tmpdir
+{
+ char **list;
+ uint cur, max;
+ mysql_mutex_t mutex;
+} MY_TMPDIR;
+
+typedef struct st_dynamic_string
+{
+ char *str;
+ size_t length,max_length,alloc_increment;
+} DYNAMIC_STRING;
+
+struct st_io_cache;
+typedef int (*IO_CACHE_CALLBACK)(struct st_io_cache*);
+
+typedef struct st_io_cache_share
+{
+ mysql_mutex_t mutex; /* To sync on reads into buffer. */
+ mysql_cond_t cond; /* To wait for signals. */
+ mysql_cond_t cond_writer; /* For a synchronized writer. */
+ /* Offset in file corresponding to the first byte of buffer. */
+ my_off_t pos_in_file;
+ /* If a synchronized write cache is the source of the data. */
+ struct st_io_cache *source_cache;
+ uchar *buffer; /* The read buffer. */
+ uchar *read_end; /* Behind last valid byte of buffer. */
+ int running_threads; /* threads not in lock. */
+ int total_threads; /* threads sharing the cache. */
+ int error; /* Last error. */
+} IO_CACHE_SHARE;
+
+typedef struct st_io_cache /* Used when cacheing files */
+{
+ /* Offset in file corresponding to the first byte of uchar* buffer. */
+ my_off_t pos_in_file;
+ /*
+ The offset of end of file for READ_CACHE and WRITE_CACHE.
+ For SEQ_READ_APPEND it the maximum of the actual end of file and
+ the position represented by read_end.
+ */
+ my_off_t end_of_file;
+ /* Points to current read position in the buffer */
+ uchar *read_pos;
+ /* the non-inclusive boundary in the buffer for the currently valid read */
+ uchar *read_end;
+ uchar *buffer; /* The read buffer */
+ /* Used in ASYNC_IO */
+ uchar *request_pos;
+
+ /* Only used in WRITE caches and in SEQ_READ_APPEND to buffer writes */
+ uchar *write_buffer;
+ /*
+ Only used in SEQ_READ_APPEND, and points to the current read position
+ in the write buffer. Note that reads in SEQ_READ_APPEND caches can
+ happen from both read buffer (uchar* buffer) and write buffer
+ (uchar* write_buffer).
+ */
+ uchar *append_read_pos;
+ /* Points to current write position in the write buffer */
+ uchar *write_pos;
+ /* The non-inclusive boundary of the valid write area */
+ uchar *write_end;
+
+ /*
+ Current_pos and current_end are convenience variables used by
+ my_b_tell() and other routines that need to know the current offset
+ current_pos points to &write_pos, and current_end to &write_end in a
+ WRITE_CACHE, and &read_pos and &read_end respectively otherwise
+ */
+ uchar **current_pos, **current_end;
+
+ /*
+ The lock is for append buffer used in SEQ_READ_APPEND cache
+ need mutex copying from append buffer to read buffer.
+ */
+ mysql_mutex_t append_buffer_lock;
+ /*
+ The following is used when several threads are reading the
+ same file in parallel. They are synchronized on disk
+ accesses reading the cached part of the file asynchronously.
+ It should be set to NULL to disable the feature. Only
+ READ_CACHE mode is supported.
+ */
+ IO_CACHE_SHARE *share;
+
+ /*
+ A caller will use my_b_read() macro to read from the cache
+ if the data is already in cache, it will be simply copied with
+ memcpy() and internal variables will be accordinging updated with
+ no functions invoked. However, if the data is not fully in the cache,
+ my_b_read() will call read_function to fetch the data. read_function
+ must never be invoked directly.
+ */
+ int (*read_function)(struct st_io_cache *,uchar *,size_t);
+ /*
+ Same idea as in the case of read_function, except my_b_write() needs to
+ be replaced with my_b_append() for a SEQ_READ_APPEND cache
+ */
+ int (*write_function)(struct st_io_cache *,const uchar *,size_t);
+ /*
+ Specifies the type of the cache. Depending on the type of the cache
+ certain operations might not be available and yield unpredicatable
+ results. Details to be documented later
+ */
+ enum cache_type type;
+ /*
+ Callbacks when the actual read I/O happens. These were added and
+ are currently used for binary logging of LOAD DATA INFILE - when a
+ block is read from the file, we create a block create/append event, and
+ when IO_CACHE is closed, we create an end event. These functions could,
+ of course be used for other things
+ */
+ IO_CACHE_CALLBACK pre_read;
+ IO_CACHE_CALLBACK post_read;
+ IO_CACHE_CALLBACK pre_close;
+ /*
+ Counts the number of times, when we were forced to use disk. We use it to
+ increase the binlog_cache_disk_use and binlog_stmt_cache_disk_use status
+ variables.
+ */
+ ulong disk_writes;
+ void* arg; /* for use by pre/post_read */
+ char *file_name; /* if used with 'open_cached_file' */
+ char *dir,*prefix;
+ File file; /* file descriptor */
+ PSI_file_key file_key; /* instrumented file key */
+
+ /*
+ seek_not_done is set by my_b_seek() to inform the upcoming read/write
+ operation that a seek needs to be preformed prior to the actual I/O
+ error is 0 if the cache operation was successful, -1 if there was a
+ "hard" error, and the actual number of I/O-ed bytes if the read/write was
+ partial.
+ */
+ int seek_not_done,error;
+ /* buffer_length is memory size allocated for buffer or write_buffer */
+ size_t buffer_length;
+ /* read_length is the same as buffer_length except when we use async io */
+ size_t read_length;
+ myf myflags; /* Flags used to my_read/my_write */
+ /*
+ alloced_buffer is 1 if the buffer was allocated by init_io_cache() and
+ 0 if it was supplied by the user.
+ Currently READ_NET is the only one that will use a buffer allocated
+ somewhere else
+ */
+ my_bool alloced_buffer;
+} IO_CACHE;
+
+typedef int (*qsort2_cmp)(const void *, const void *, const void *);
+
+/*
+ Subset of struct stat fields filled by stat/lstat/fstat that uniquely
+ identify a file
+*/
+typedef struct st_file_id
+{
+ dev_t st_dev;
+ ino_t st_ino;
+} ST_FILE_ID;
+
+typedef void (*my_error_reporter)(enum loglevel level, const char *format, ...)
+ MY_ATTRIBUTE((format(printf, 2, 3)));
+
+extern my_error_reporter my_charset_error_reporter;
+
+/* defines for mf_iocache */
+extern PSI_file_key key_file_io_cache;
+
+/* Test if buffer is inited */
+#define my_b_clear(info) (info)->buffer=0
+#define my_b_inited(info) (info)->buffer
+#define my_b_EOF INT_MIN
+
+#define my_b_read(info,Buffer,Count) \
+ ((info)->read_pos + (Count) <= (info)->read_end ?\
+ (memcpy(Buffer,(info)->read_pos,(size_t) (Count)), \
+ ((info)->read_pos+=(Count)),0) :\
+ (*(info)->read_function)((info),Buffer,Count))
+
+#define my_b_write(info,Buffer,Count) \
+ ((info)->write_pos + (Count) <=(info)->write_end ?\
+ (memcpy((info)->write_pos, (Buffer), (size_t)(Count)),\
+ ((info)->write_pos+=(Count)),0) : \
+ (*(info)->write_function)((info),(uchar *)(Buffer),(Count)))
+
+#define my_b_get(info) \
+ ((info)->read_pos != (info)->read_end ?\
+ ((info)->read_pos++, (int) (uchar) (info)->read_pos[-1]) :\
+ _my_b_get(info))
+
+#define my_b_tell(info) ((info)->pos_in_file + \
+ (size_t) (*(info)->current_pos - (info)->request_pos))
+
+#define my_b_get_buffer_start(info) (info)->request_pos
+#define my_b_get_bytes_in_buffer(info) (char*) (info)->read_end - \
+ (char*) my_b_get_buffer_start(info)
+#define my_b_get_pos_in_file(info) (info)->pos_in_file
+
+/* tell write offset in the SEQ_APPEND cache */
+int my_b_copy_to_file(IO_CACHE *cache, FILE *file);
+my_off_t my_b_append_tell(IO_CACHE* info);
+my_off_t my_b_safe_tell(IO_CACHE* info); /* picks the correct tell() */
+
+#define my_b_bytes_in_cache(info) (size_t) (*(info)->current_end - \
+ *(info)->current_pos)
+
+typedef uint32 ha_checksum;
+
+#include <my_alloc.h>
+
+
+ /* Prototypes for mysys and my_func functions */
+
+extern int my_copy(const char *from,const char *to,myf MyFlags);
+extern int my_delete(const char *name,myf MyFlags);
+extern int my_getwd(char * buf,size_t size,myf MyFlags);
+extern int my_setwd(const char *dir,myf MyFlags);
+extern int my_lock(File fd,int op,my_off_t start, my_off_t length,myf MyFlags);
+extern void *my_once_alloc(size_t Size,myf MyFlags);
+extern void my_once_free(void);
+extern char *my_once_strdup(const char *src,myf myflags);
+extern void *my_once_memdup(const void *src, size_t len, myf myflags);
+extern File my_open(const char *FileName,int Flags,myf MyFlags);
+extern File my_register_filename(File fd, const char *FileName,
+ enum file_type type_of_file,
+ uint error_message_number, myf MyFlags);
+extern File my_create(const char *FileName,int CreateFlags,
+ int AccessFlags, myf MyFlags);
+extern int my_close(File Filedes,myf MyFlags);
+extern int my_mkdir(const char *dir, int Flags, myf MyFlags);
+extern int my_readlink(char *to, const char *filename, myf MyFlags);
+extern int my_is_symlink(const char *filename, ST_FILE_ID *file_id);
+extern int my_realpath(char *to, const char *filename, myf MyFlags);
+extern int my_is_same_file(File file, const ST_FILE_ID *file_id);
+extern File my_create_with_symlink(const char *linkname, const char *filename,
+ int createflags, int access_flags,
+ myf MyFlags);
+extern int my_delete_with_symlink(const char *name, myf MyFlags);
+extern int my_rename_with_symlink(const char *from,const char *to,myf MyFlags);
+extern int my_symlink(const char *content, const char *linkname, myf MyFlags);
+extern size_t my_read(File Filedes,uchar *Buffer,size_t Count,myf MyFlags);
+extern size_t my_pread(File Filedes,uchar *Buffer,size_t Count,my_off_t offset,
+ myf MyFlags);
+extern int my_rename(const char *from,const char *to,myf MyFlags);
+extern my_off_t my_seek(File fd,my_off_t pos,int whence,myf MyFlags);
+extern my_off_t my_tell(File fd,myf MyFlags);
+extern size_t my_write(File Filedes,const uchar *Buffer,size_t Count,
+ myf MyFlags);
+extern size_t my_pwrite(File Filedes,const uchar *Buffer,size_t Count,
+ my_off_t offset,myf MyFlags);
+extern size_t my_fread(FILE *stream,uchar *Buffer,size_t Count,myf MyFlags);
+extern size_t my_fwrite(FILE *stream,const uchar *Buffer,size_t Count,
+ myf MyFlags);
+extern my_off_t my_fseek(FILE *stream,my_off_t pos,int whence,myf MyFlags);
+extern my_off_t my_ftell(FILE *stream,myf MyFlags);
+
+/* implemented in my_syslog.c */
+
+// Maximum size of message that will be logged.
+#define MAX_SYSLOG_MESSAGE_SIZE 1024
+
+/* Platform-independent SysLog support */
+
+/* facilities on unixoid syslog. harmless on systemd / Win platforms. */
+typedef struct st_syslog_facility { int id; const char *name; } SYSLOG_FACILITY;
+extern SYSLOG_FACILITY syslog_facility[];
+
+enum my_syslog_options { MY_SYSLOG_PIDS= 1 };
+
+int my_openlog(const char *eventSourceName, int option, int facility);
+int my_closelog();
+int my_syslog(const CHARSET_INFO *cs, enum loglevel level, const char *msg);
+
+/* implemented in my_memmem.c */
+extern void *my_memmem(const void *haystack, size_t haystacklen,
+ const void *needle, size_t needlelen);
+
+
+#ifdef _WIN32
+extern int my_access(const char *path, int amode);
+#else
+#define my_access access
+#endif
+
+extern int check_if_legal_filename(const char *path);
+extern int check_if_legal_tablename(const char *path);
+
+#ifdef _WIN32
+extern my_bool is_filename_allowed(const char *name, size_t length,
+ my_bool allow_current_dir);
+#else /* _WIN32 */
+# define is_filename_allowed(name, length, allow_cwd) (TRUE)
+#endif /* _WIN32 */
+
+#ifdef _WIN32
+extern int nt_share_delete(const char *name,myf MyFlags);
+#define my_delete_allow_opened(fname,flags) nt_share_delete((fname),(flags))
+#else
+#define my_delete_allow_opened(fname,flags) my_delete((fname),(flags))
+#endif
+
+#ifdef _WIN32
+/* Windows-only functions (CRT equivalents)*/
+extern HANDLE my_get_osfhandle(File fd);
+extern void my_osmaperr(unsigned long last_error);
+#endif
+
+extern const char* get_global_errmsg(int nr);
+extern void wait_for_free_space(const char *filename, int errors);
+extern FILE *my_fopen(const char *FileName,int Flags,myf MyFlags);
+extern FILE *my_fdopen(File Filedes,const char *name, int Flags,myf MyFlags);
+extern FILE *my_freopen(const char *path, const char *mode, FILE *stream);
+extern int my_fclose(FILE *fd,myf MyFlags);
+extern File my_fileno(FILE *fd);
+extern int my_chsize(File fd,my_off_t newlength, int filler, myf MyFlags);
+extern void thr_set_sync_wait_callback(void (*before_sync)(void),
+ void (*after_sync)(void));
+extern int my_sync(File fd, myf my_flags);
+extern int my_sync_dir(const char *dir_name, myf my_flags);
+extern int my_sync_dir_by_file(const char *file_name, myf my_flags);
+extern char *my_strerror(char *buf, size_t len, int errnum);
+extern const char *my_get_err_msg(int nr);
+extern void my_error(int nr,myf MyFlags, ...);
+extern void my_printf_error(uint my_err, const char *format,
+ myf MyFlags, ...)
+ MY_ATTRIBUTE((format(printf, 2, 4)));
+extern void my_printv_error(uint error, const char *format, myf MyFlags,
+ va_list ap);
+extern int my_error_register(const char* (*get_errmsg) (int),
+ int first, int last);
+extern my_bool my_error_unregister(int first, int last);
+extern void my_message(uint my_err, const char *str,myf MyFlags);
+extern void my_message_stderr(uint my_err, const char *str, myf MyFlags);
+void my_message_local_stderr(enum loglevel ll,
+ const char *format, va_list args);
+extern void my_message_local(enum loglevel ll, const char *format, ...);
+extern my_bool my_init(void);
+extern void my_end(int infoflag);
+extern int my_redel(const char *from, const char *to, int MyFlags);
+extern int my_copystat(const char *from, const char *to, int MyFlags);
+extern char * my_filename(File fd);
+extern MY_MODE get_file_perm(ulong perm_flags);
+extern my_bool my_chmod(const char *filename, ulong perm_flags, myf my_flags);
+
+#ifdef EXTRA_DEBUG
+void my_print_open_files(void);
+#else
+#define my_print_open_files()
+#endif
+
+extern my_bool init_tmpdir(MY_TMPDIR *tmpdir, const char *pathlist);
+extern char *my_tmpdir(MY_TMPDIR *tmpdir);
+extern void free_tmpdir(MY_TMPDIR *tmpdir);
+
+extern size_t dirname_part(char * to,const char *name, size_t *to_res_length);
+extern size_t dirname_length(const char *name);
+#define base_name(A) (A+dirname_length(A))
+extern int test_if_hard_path(const char *dir_name);
+extern my_bool has_path(const char *name);
+extern char *convert_dirname(char *to, const char *from, const char *from_end);
+extern void to_unix_path(char * name);
+extern char * fn_ext(const char *name);
+extern char * fn_same(char * toname,const char *name,int flag);
+extern char * fn_format(char * to,const char *name,const char *dir,
+ const char *form, uint flag);
+extern size_t strlength(const char *str);
+extern void pack_dirname(char * to,const char *from);
+extern size_t normalize_dirname(char * to, const char *from);
+extern size_t unpack_dirname(char * to,const char *from);
+extern size_t cleanup_dirname(char * to,const char *from);
+extern size_t system_filename(char * to,const char *from);
+extern size_t unpack_filename(char * to,const char *from);
+extern char * intern_filename(char * to,const char *from);
+extern int pack_filename(char * to, const char *name, size_t max_length);
+extern char * my_path(char * to,const char *progname,
+ const char *own_pathname_part);
+extern char * my_load_path(char * to, const char *path,
+ const char *own_path_prefix);
+extern int wild_compare(const char *str,const char *wildstr,
+ pbool str_is_pattern);
+extern my_bool array_append_string_unique(const char *str,
+ const char **array, size_t size);
+extern void get_date(char * to,int timeflag,time_t use_time);
+extern void soundex(CHARSET_INFO *, char * out_pntr, char * in_pntr,
+ pbool remove_garbage);
+
+extern my_bool radixsort_is_appliccable(uint n_items, size_t size_of_element);
+extern void radixsort_for_str_ptr(uchar* base[], uint number_of_elements,
+ size_t size_of_element,uchar *buffer[]);
+extern void my_qsort(void *base_ptr, size_t total_elems, size_t size,
+ qsort_cmp cmp);
+extern void my_qsort2(void *base_ptr, size_t total_elems, size_t size,
+ qsort2_cmp cmp, const void *cmp_argument);
+void my_store_ptr(uchar *buff, size_t pack_length, my_off_t pos);
+my_off_t my_get_ptr(uchar *ptr, size_t pack_length);
+extern int init_io_cache_ext(IO_CACHE *info,File file,size_t cachesize,
+ enum cache_type type,my_off_t seek_offset,
+ pbool use_async_io, myf cache_myflags,
+ PSI_file_key file_key);
+extern int init_io_cache(IO_CACHE *info,File file,size_t cachesize,
+ enum cache_type type,my_off_t seek_offset,
+ pbool use_async_io, myf cache_myflags);
+extern my_bool reinit_io_cache(IO_CACHE *info,enum cache_type type,
+ my_off_t seek_offset,pbool use_async_io,
+ pbool clear_cache);
+extern void setup_io_cache(IO_CACHE* info);
+extern int _my_b_read(IO_CACHE *info,uchar *Buffer,size_t Count);
+extern int _my_b_read_r(IO_CACHE *info,uchar *Buffer,size_t Count);
+extern void init_io_cache_share(IO_CACHE *read_cache, IO_CACHE_SHARE *cshare,
+ IO_CACHE *write_cache, uint num_threads);
+extern void remove_io_thread(IO_CACHE *info);
+extern int _my_b_seq_read(IO_CACHE *info,uchar *Buffer,size_t Count);
+extern int _my_b_net_read(IO_CACHE *info,uchar *Buffer,size_t Count);
+extern int _my_b_get(IO_CACHE *info);
+extern int _my_b_write(IO_CACHE *info,const uchar *Buffer,size_t Count);
+extern int my_b_append(IO_CACHE *info,const uchar *Buffer,size_t Count);
+extern int my_b_safe_write(IO_CACHE *info,const uchar *Buffer,size_t Count);
+
+extern int my_block_write(IO_CACHE *info, const uchar *Buffer,
+ size_t Count, my_off_t pos);
+extern int my_b_flush_io_cache(IO_CACHE *info, int need_append_buffer_lock);
+
+#define flush_io_cache(info) my_b_flush_io_cache((info),1)
+
+extern int end_io_cache(IO_CACHE *info);
+extern size_t my_b_fill(IO_CACHE *info);
+extern void my_b_seek(IO_CACHE *info,my_off_t pos);
+extern size_t my_b_gets(IO_CACHE *info, char *to, size_t max_length);
+extern my_off_t my_b_filelength(IO_CACHE *info);
+extern size_t my_b_printf(IO_CACHE *info, const char* fmt, ...)
+ MY_ATTRIBUTE((format(printf, 2, 3)));
+extern size_t my_b_vprintf(IO_CACHE *info, const char* fmt, va_list ap);
+extern my_bool open_cached_file(IO_CACHE *cache,const char *dir,
+ const char *prefix, size_t cache_size,
+ myf cache_myflags);
+extern my_bool real_open_cached_file(IO_CACHE *cache);
+extern void close_cached_file(IO_CACHE *cache);
+File create_temp_file(char *to, const char *dir, const char *pfx,
+ int mode, myf MyFlags);
+
+// Use Prealloced_array or std::vector or something similar in C++
+#if defined(__cplusplus)
+
+#define init_dynamic_array please_use_an_appropriately_typed_container
+#define my_init_dynamic_array please_use_an_appropriately_typed_container
+
+#else
+
+extern my_bool my_init_dynamic_array(DYNAMIC_ARRAY *array,
+ PSI_memory_key key,
+ uint element_size,
+ void *init_buffer,
+ uint init_alloc,
+ uint alloc_increment);
+/* init_dynamic_array() function is deprecated */
+extern my_bool init_dynamic_array(DYNAMIC_ARRAY *array, uint element_size,
+ uint init_alloc, uint alloc_increment);
+#define dynamic_element(array,array_index,type) \
+ ((type)((array)->buffer) +(array_index))
+
+#endif /* __cplusplus */
+
+/* Some functions are still in use in C++, because HASH uses DYNAMIC_ARRAY */
+extern my_bool insert_dynamic(DYNAMIC_ARRAY *array, const void *element);
+extern void *alloc_dynamic(DYNAMIC_ARRAY *array);
+extern void *pop_dynamic(DYNAMIC_ARRAY*);
+extern void get_dynamic(DYNAMIC_ARRAY *array, void *element, uint array_index);
+extern void claim_dynamic(DYNAMIC_ARRAY *array);
+extern void delete_dynamic(DYNAMIC_ARRAY *array);
+extern void freeze_size(DYNAMIC_ARRAY *array);
+static inline void reset_dynamic(DYNAMIC_ARRAY *array)
+{
+ array->elements= 0;
+}
+
+extern my_bool init_dynamic_string(DYNAMIC_STRING *str, const char *init_str,
+ size_t init_alloc,size_t alloc_increment);
+extern my_bool dynstr_append(DYNAMIC_STRING *str, const char *append);
+my_bool dynstr_append_mem(DYNAMIC_STRING *str, const char *append,
+ size_t length);
+extern my_bool dynstr_append_os_quoted(DYNAMIC_STRING *str, const char *append,
+ ...);
+extern my_bool dynstr_set(DYNAMIC_STRING *str, const char *init_str);
+extern my_bool dynstr_realloc(DYNAMIC_STRING *str, size_t additional_size);
+extern my_bool dynstr_trunc(DYNAMIC_STRING *str, size_t n);
+extern void dynstr_free(DYNAMIC_STRING *str);
+#define alloc_root_inited(A) ((A)->min_malloc != 0)
+#define ALLOC_ROOT_MIN_BLOCK_SIZE (MALLOC_OVERHEAD + sizeof(USED_MEM) + 8)
+#define clear_alloc_root(A) do { (A)->free= (A)->used= (A)->pre_alloc= 0; (A)->min_malloc=0;} while(0)
+extern void init_alloc_root(PSI_memory_key key,
+ MEM_ROOT *mem_root, size_t block_size,
+ size_t pre_alloc_size);
+extern void *alloc_root(MEM_ROOT *mem_root, size_t Size);
+extern void *multi_alloc_root(MEM_ROOT *mem_root, ...);
+extern void claim_root(MEM_ROOT *root);
+extern void free_root(MEM_ROOT *root, myf MyFLAGS);
+extern void reset_root_defaults(MEM_ROOT *mem_root, size_t block_size,
+ size_t prealloc_size);
+extern char *strdup_root(MEM_ROOT *root,const char *str);
+static inline char *safe_strdup_root(MEM_ROOT *root, const char *str)
+{
+ return str ? strdup_root(root, str) : 0;
+}
+extern char *strmake_root(MEM_ROOT *root,const char *str,size_t len);
+extern void *memdup_root(MEM_ROOT *root,const void *str, size_t len);
+extern void set_memroot_max_capacity(MEM_ROOT *mem_root, size_t size);
+extern void set_memroot_error_reporting(MEM_ROOT *mem_root,
+ my_bool report_error);
+extern my_bool my_compress(uchar *, size_t *, size_t *);
+extern my_bool my_uncompress(uchar *, size_t , size_t *);
+extern uchar *my_compress_alloc(const uchar *packet, size_t *len,
+ size_t *complen);
+extern int packfrm(uchar *, size_t, uchar **, size_t *);
+extern int unpackfrm(uchar **, size_t *, const uchar *);
+
+extern ha_checksum my_checksum(ha_checksum crc, const uchar *mem,
+ size_t count);
+
+/* Wait a given number of microseconds */
+static inline void my_sleep(time_t m_seconds)
+{
+#if defined(_WIN32)
+ Sleep((DWORD)m_seconds/1000+1); /* Sleep() has millisecond arg */
+#else
+ struct timeval t;
+ t.tv_sec= m_seconds / 1000000L;
+ t.tv_usec= m_seconds % 1000000L;
+ select(0,0,0,0,&t); /* sleep */
+#endif
+}
+
+extern ulong crc32(ulong crc, const uchar *buf, uint len);
+extern uint my_set_max_open_files(uint files);
+void my_free_open_file_info(void);
+
+extern time_t my_time(myf flags);
+extern ulonglong my_getsystime(void);
+extern ulonglong my_micro_time();
+extern my_bool my_gethwaddr(uchar *to);
+
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+
+#ifndef MAP_NOSYNC
+#define MAP_NOSYNC 0
+#endif
+
+/*
+ Not defined in FreeBSD 11.
+ Was never implemented in FreeBSD, so we just set it to 0.
+*/
+#ifndef MAP_NORESERVE
+#define MAP_NORESERVE 0
+#endif
+
+#ifdef HAVE_MMAP64
+#define my_mmap(a,b,c,d,e,f) mmap64(a,b,c,d,e,f)
+#else
+#define my_mmap(a,b,c,d,e,f) mmap(a,b,c,d,e,f)
+#endif
+#define my_munmap(a,b) munmap((a),(b))
+
+#else
+/* not a complete set of mmap() flags, but only those that nesessary */
+#define PROT_READ 1
+#define PROT_WRITE 2
+#define MAP_NORESERVE 0
+#define MAP_SHARED 0x0001
+#define MAP_PRIVATE 0x0002
+#define MAP_NOSYNC 0x0800
+#define MAP_FAILED ((void *)-1)
+#define MS_SYNC 0x0000
+
+void *my_mmap(void *, size_t, int, int, int, my_off_t);
+int my_munmap(void *, size_t);
+#endif
+
+/* my_getpagesize */
+static inline int my_getpagesize()
+{
+#ifndef _WIN32
+ return getpagesize();
+#else
+ SYSTEM_INFO si;
+ GetSystemInfo(&si);
+ return (int)si.dwPageSize;
+#endif
+}
+
+int my_msync(int, void *, size_t, int);
+
+/* character sets */
+extern void my_charset_loader_init_mysys(MY_CHARSET_LOADER *loader);
+extern uint get_charset_number(const char *cs_name, uint cs_flags);
+extern uint get_collation_number(const char *name);
+extern const char *get_charset_name(uint cs_number);
+
+extern CHARSET_INFO *get_charset(uint cs_number, myf flags);
+extern CHARSET_INFO *get_charset_by_name(const char *cs_name, myf flags);
+extern CHARSET_INFO *my_collation_get_by_name(MY_CHARSET_LOADER *loader,
+ const char *name, myf flags);
+extern CHARSET_INFO *get_charset_by_csname(const char *cs_name,
+ uint cs_flags, myf my_flags);
+extern CHARSET_INFO *my_charset_get_by_name(MY_CHARSET_LOADER *loader,
+ const char *name,
+ uint cs_flags, myf my_flags);
+extern my_bool resolve_charset(const char *cs_name,
+ const CHARSET_INFO *default_cs,
+ const CHARSET_INFO **cs);
+extern my_bool resolve_collation(const char *cl_name,
+ const CHARSET_INFO *default_cl,
+ const CHARSET_INFO **cl);
+extern void free_charsets(void);
+extern char *get_charsets_dir(char *buf);
+extern my_bool my_charset_same(const CHARSET_INFO *cs1,
+ const CHARSET_INFO *cs2);
+extern my_bool init_compiled_charsets(myf flags);
+extern void add_compiled_collation(CHARSET_INFO *cs);
+extern size_t escape_string_for_mysql(const CHARSET_INFO *charset_info,
+ char *to, size_t to_length,
+ const char *from, size_t length);
+#ifdef _WIN32
+/* File system character set */
+extern CHARSET_INFO *fs_character_set(void);
+#endif
+extern size_t escape_quotes_for_mysql(CHARSET_INFO *charset_info,
+ char *to, size_t to_length,
+ const char *from, size_t length, char quote);
+#ifdef _WIN32
+extern my_bool have_tcpip; /* Is set if tcpip is used */
+
+/* implemented in my_windac.c */
+
+int my_security_attr_create(SECURITY_ATTRIBUTES **psa, const char **perror,
+ DWORD owner_rights, DWORD everybody_rights);
+
+void my_security_attr_free(SECURITY_ATTRIBUTES *sa);
+
+/* implemented in my_conio.c */
+my_bool my_win_is_console(FILE *file);
+char *my_win_console_readline(const CHARSET_INFO *cs, char *mbbuf, size_t mbbufsize,
+ size_t *nread);
+void my_win_console_write(const CHARSET_INFO *cs, const char *data, size_t datalen);
+void my_win_console_fputs(const CHARSET_INFO *cs, const char *data);
+void my_win_console_putc(const CHARSET_INFO *cs, int c);
+void my_win_console_vfprintf(const CHARSET_INFO *cs, const char *fmt, va_list args);
+int my_win_translate_command_line_args(const CHARSET_INFO *cs, int *ac, char ***av);
+#endif /* _WIN32 */
+
+#ifdef HAVE_PSI_INTERFACE
+extern MYSQL_PLUGIN_IMPORT struct PSI_bootstrap *PSI_hook;
+extern void set_psi_server(PSI *psi);
+void my_init_mysys_psi_keys(void);
+#endif
+
+struct st_mysql_file;
+extern struct st_mysql_file *mysql_stdin;
+
+C_MODE_END
+#endif /* _my_sys_h */