MySQL 5.6.14 Source Code Document
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my_dir.h
1 /* Copyright (c) 2000, 2010, 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 MY_DIR_H
17 #define MY_DIR_H
18 
19 #include "my_global.h"
20 
21 #include <sys/stat.h>
22 
23 #ifdef __cplusplus
24 extern "C" {
25 #endif
26 
27  /* Defines for my_dir and my_stat */
28 
29 #define MY_S_IFMT S_IFMT /* type of file */
30 #define MY_S_IFDIR S_IFDIR /* directory */
31 #define MY_S_IFCHR S_IFCHR /* character special */
32 #define MY_S_IFBLK S_IFBLK /* block special */
33 #define MY_S_IFREG S_IFREG /* regular */
34 #define MY_S_IFIFO S_IFIFO /* fifo */
35 #define MY_S_ISUID S_ISUID /* set user id on execution */
36 #define MY_S_ISGID S_ISGID /* set group id on execution */
37 #define MY_S_ISVTX S_ISVTX /* save swapped text even after use */
38 #define MY_S_IREAD S_IREAD /* read permission, owner */
39 #define MY_S_IWRITE S_IWRITE /* write permission, owner */
40 #define MY_S_IEXEC S_IEXEC /* execute/search permission, owner */
41 
42 #define MY_S_ISDIR(m) (((m) & MY_S_IFMT) == MY_S_IFDIR)
43 #define MY_S_ISCHR(m) (((m) & MY_S_IFMT) == MY_S_IFCHR)
44 #define MY_S_ISBLK(m) (((m) & MY_S_IFMT) == MY_S_IFBLK)
45 #define MY_S_ISREG(m) (((m) & MY_S_IFMT) == MY_S_IFREG)
46 #define MY_S_ISFIFO(m) (((m) & MY_S_IFMT) == MY_S_IFIFO)
47 
48 #define MY_DONT_SORT 512 /* my_lib; Don't sort files */
49 #define MY_WANT_STAT 1024 /* my_lib; stat files */
50 
51  /* typedefs for my_dir & my_stat */
52 
53 #ifdef USE_MY_STAT_STRUCT
54 
55 typedef struct my_stat
56 {
57  dev_t st_dev; /* major & minor device numbers */
58  ino_t st_ino; /* inode number */
59  ushort st_mode; /* file permissons (& suid sgid .. bits) */
60  short st_nlink; /* number of links to file */
61  ushort st_uid; /* user id */
62  ushort st_gid; /* group id */
63  dev_t st_rdev; /* more major & minor device numbers (???) */
64  off_t st_size; /* size of file */
65  time_t st_atime; /* time for last read */
66  time_t st_mtime; /* time for last contens modify */
67  time_t st_ctime; /* time for last inode or contents modify */
68 } MY_STAT;
69 
70 #else
71 
72 #if(_MSC_VER)
73 #define MY_STAT struct _stati64 /* 64 bit file size */
74 #else
75 #define MY_STAT struct stat /* Orginal struct have what we need */
76 #endif
77 
78 #endif /* USE_MY_STAT_STRUCT */
79 
80 /* Struct describing one file returned from my_dir */
81 typedef struct fileinfo
82 {
83  char *name;
84  MY_STAT *mystat;
85 } FILEINFO;
86 
87 typedef struct st_my_dir /* Struct returned from my_dir */
88 {
89  /*
90  These members are just copies of parts of DYNAMIC_ARRAY structure,
91  which is allocated right after the end of MY_DIR structure (MEM_ROOT
92  for storing names is also resides there). We've left them here because
93  we don't want to change code that uses my_dir.
94  */
95  struct fileinfo *dir_entry;
96  uint number_off_files;
97 } MY_DIR;
98 
99 extern MY_DIR *my_dir(const char *path,myf MyFlags);
100 extern void my_dirend(MY_DIR *buffer);
101 extern MY_STAT *my_stat(const char *path, MY_STAT *stat_area, myf my_flags);
102 extern int my_fstat(int filenr, MY_STAT *stat_area, myf MyFlags);
103 
104 #ifdef __cplusplus
105 }
106 #endif
107 
108 #endif /* MY_DIR_H */
109