1/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; version 2 of the License.
6
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 GNU General Public License for more details.
11
12 You should have received a copy of the GNU General Public License
13 along with this program; if not, write to the Free Software
14 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
15
16#ifndef MYSYS_PRIV_INCLUDED
17#define MYSYS_PRIV_INCLUDED
18
19#include <my_global.h>
20#include <my_sys.h>
21#include <my_crypt.h>
22
23C_MODE_START
24
25#ifdef USE_SYSTEM_WRAPPERS
26#include "system_wrappers.h"
27#endif
28
29#ifdef HAVE_GETRUSAGE
30#include <sys/resource.h>
31#endif
32
33#include <my_pthread.h>
34
35#ifdef HAVE_PSI_INTERFACE
36
37#if !defined(HAVE_PREAD) && !defined(_WIN32)
38extern PSI_mutex_key key_my_file_info_mutex;
39#endif /* !defined(HAVE_PREAD) && !defined(_WIN32) */
40
41#if !defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R)
42extern PSI_mutex_key key_LOCK_localtime_r;
43#endif /* !defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R) */
44
45extern PSI_mutex_key key_BITMAP_mutex, key_IO_CACHE_append_buffer_lock,
46 key_IO_CACHE_SHARE_mutex, key_KEY_CACHE_cache_lock, key_LOCK_alarm,
47 key_my_thread_var_mutex, key_THR_LOCK_charset, key_THR_LOCK_heap,
48 key_THR_LOCK_lock, key_THR_LOCK_malloc,
49 key_THR_LOCK_mutex, key_THR_LOCK_myisam, key_THR_LOCK_net,
50 key_THR_LOCK_open, key_THR_LOCK_threads, key_LOCK_uuid_generator,
51 key_TMPDIR_mutex, key_THR_LOCK_myisam_mmap, key_LOCK_timer;
52
53extern PSI_cond_key key_COND_alarm, key_COND_timer, key_IO_CACHE_SHARE_cond,
54 key_IO_CACHE_SHARE_cond_writer, key_my_thread_var_suspend,
55 key_THR_COND_threads;
56
57#ifdef USE_ALARM_THREAD
58extern PSI_thread_key key_thread_alarm;
59#endif /* USE_ALARM_THREAD */
60extern PSI_thread_key key_thread_timer;
61extern PSI_rwlock_key key_SAFEHASH_mutex;
62
63#endif /* HAVE_PSI_INTERFACE */
64
65extern PSI_stage_info stage_waiting_for_table_level_lock;
66
67extern mysql_mutex_t THR_LOCK_malloc, THR_LOCK_open, THR_LOCK_keycache;
68extern mysql_mutex_t THR_LOCK_lock, THR_LOCK_net;
69extern mysql_mutex_t THR_LOCK_charset;
70
71#include <mysql/psi/mysql_file.h>
72
73#ifdef HAVE_PSI_INTERFACE
74#ifdef HUGETLB_USE_PROC_MEMINFO
75extern PSI_file_key key_file_proc_meminfo;
76#endif /* HUGETLB_USE_PROC_MEMINFO */
77extern PSI_file_key key_file_charset, key_file_cnf;
78#endif /* HAVE_PSI_INTERFACE */
79
80typedef struct {
81 ulonglong counter;
82 uint block_length, last_block_length;
83 uchar key[MY_AES_BLOCK_SIZE];
84 ulonglong inbuf_counter;
85} IO_CACHE_CRYPT;
86
87extern int (*_my_b_encr_read)(IO_CACHE *info,uchar *Buffer,size_t Count);
88extern int (*_my_b_encr_write)(IO_CACHE *info,const uchar *Buffer,size_t Count);
89
90#ifdef SAFEMALLOC
91void *sf_malloc(size_t size, myf my_flags);
92void *sf_realloc(void *ptr, size_t size, myf my_flags);
93void sf_free(void *ptr);
94size_t sf_malloc_usable_size(void *ptr, my_bool *is_thread_specific);
95#else
96#define sf_malloc(X,Y) malloc(X)
97#define sf_realloc(X,Y,Z) realloc(X,Y)
98#define sf_free(X) free(X)
99#endif
100
101/*
102 EDQUOT is used only in 3 C files only in mysys/. If it does not exist on
103 system, we set it to some value which can never happen.
104*/
105#ifndef EDQUOT
106#define EDQUOT (-1)
107#endif
108
109void my_error_unregister_all(void);
110
111#ifndef O_PATH /* not Linux */
112#if defined(O_SEARCH) /* Illumos */
113#define O_PATH O_SEARCH
114#elif defined(O_EXEC) /* FreeBSD */
115#define O_PATH O_EXEC
116#endif
117#endif
118
119#ifdef O_PATH
120#define HAVE_OPEN_PARENT_DIR_NOSYMLINKS
121const char *my_open_parent_dir_nosymlinks(const char *pathname, int *pdfd);
122#define NOSYMLINK_FUNCTION_BODY(AT,NOAT) \
123 int dfd, res; \
124 const char *filename= my_open_parent_dir_nosymlinks(pathname, &dfd); \
125 if (filename == NULL) return -1; \
126 res= AT; \
127 if (dfd >= 0) close(dfd); \
128 return res;
129#elif defined(HAVE_REALPATH) && defined(PATH_MAX)
130#define NOSYMLINK_FUNCTION_BODY(AT,NOAT) \
131 char buf[PATH_MAX+1]; \
132 if (realpath(pathname, buf) == NULL) return -1; \
133 if (strcmp(pathname, buf)) { errno= ENOTDIR; return -1; } \
134 return NOAT;
135#elif defined(HAVE_REALPATH)
136#define NOSYMLINK_FUNCTION_BODY(AT,NOAT) \
137 char *buf= realpath(pathname, NULL); \
138 int res; \
139 if (buf == NULL) return -1; \
140 if (strcmp(pathname, buf)) { errno= ENOTDIR; res= -1; } \
141 else res= NOAT; \
142 free(buf); \
143 return res;
144#else
145#define NOSYMLINK_FUNCTION_BODY(AT,NOAT) \
146 return NOAT;
147#endif
148
149#ifndef _WIN32
150#define CREATE_NOSYMLINK_FUNCTION(PROTO,AT,NOAT) \
151static int PROTO { NOSYMLINK_FUNCTION_BODY(AT,NOAT) }
152#else
153#define CREATE_NOSYMLINK_FUNCTION(PROTO,AT,NOAT)
154#endif
155
156#ifdef _WIN32
157#include <sys/stat.h>
158/* my_winfile.c exports, should not be used outside mysys */
159extern File my_win_open(const char *path, int oflag);
160extern int my_win_close(File fd);
161extern size_t my_win_read(File fd, uchar *buffer, size_t count);
162extern size_t my_win_write(File fd, const uchar *buffer, size_t count);
163extern size_t my_win_pread(File fd, uchar *buffer, size_t count,
164 my_off_t offset);
165extern size_t my_win_pwrite(File fd, const uchar *buffer, size_t count,
166 my_off_t offset);
167extern my_off_t my_win_lseek(File fd, my_off_t pos, int whence);
168extern int my_win_chsize(File fd, my_off_t newlength);
169extern FILE* my_win_fopen(const char *filename, const char *type);
170extern File my_win_fclose(FILE *file);
171extern File my_win_fileno(FILE *file);
172extern FILE* my_win_fdopen(File Filedes, const char *type);
173extern int my_win_stat(const char *path, struct _stati64 *buf);
174extern int my_win_fstat(File fd, struct _stati64 *buf);
175extern int my_win_fsync(File fd);
176extern File my_win_dup(File fd);
177extern File my_win_sopen(const char *path, int oflag, int shflag, int perm);
178extern File my_open_osfhandle(HANDLE handle, int oflag);
179#endif
180
181C_MODE_END
182
183#endif
184