1 /*
2 Copyright (c) 2000, 2010, Oracle and/or its affiliates
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; version 2 of the License.
7
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
12
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
16
17 #include "mysys_priv.h"
18 #include "mysys_err.h"
19 #include <my_dir.h> /* for stat */
20 #include <m_string.h>
21 #if defined(HAVE_UTIME_H)
22 #include <utime.h>
23 #elif defined(HAVE_SYS_UTIME_H)
24 #include <sys/utime.h>
25 #elif !defined(HPUX10)
26 #include <time.h>
27 struct utimbuf {
28 time_t actime;
29 time_t modtime;
30 };
31 #endif
32
33
34 /*
35 int my_copy(const char *from, const char *to, myf MyFlags)
36
37 NOTES
38 Ordinary ownership and accesstimes are copied from 'from-file'
39 If MyFlags & MY_HOLD_ORIGINAL_MODES is set and to-file exists then
40 the modes of to-file isn't changed
41 If MyFlags & MY_DONT_OVERWRITE_FILE is set, we will give an error
42 if the file existed.
43
44 WARNING
45 Don't set MY_FNABP or MY_NABP bits on when calling this function !
46
47 RETURN
48 0 ok
49 # Error
50
51 */
52
my_copy(const char * from,const char * to,myf MyFlags)53 int my_copy(const char *from, const char *to, myf MyFlags)
54 {
55 size_t Count;
56 my_bool new_file_stat= 0; /* 1 if we could stat "to" */
57 int create_flag;
58 File from_file,to_file;
59 uchar buff[IO_SIZE];
60 MY_STAT stat_buff,new_stat_buff;
61 my_bool file_created= 0;
62 DBUG_ENTER("my_copy");
63 DBUG_PRINT("my",("from %s to %s MyFlags %lu", from, to, MyFlags));
64
65 from_file=to_file= -1;
66 DBUG_ASSERT(!(MyFlags & (MY_FNABP | MY_NABP))); /* for my_read/my_write */
67 if (MyFlags & MY_HOLD_ORIGINAL_MODES) /* Copy stat if possible */
68 new_file_stat= MY_TEST(my_stat((char*) to, &new_stat_buff, MYF(0)));
69
70 if ((from_file=my_open(from,O_RDONLY | O_SHARE,MyFlags)) >= 0)
71 {
72 if (!my_stat(from, &stat_buff, MyFlags))
73 {
74 my_errno=errno;
75 goto err;
76 }
77 if (MyFlags & MY_HOLD_ORIGINAL_MODES && new_file_stat)
78 stat_buff=new_stat_buff;
79 create_flag= (MyFlags & MY_DONT_OVERWRITE_FILE) ? O_EXCL : O_TRUNC;
80
81 if ((to_file= my_create(to,(int) stat_buff.st_mode,
82 O_WRONLY | create_flag | O_BINARY | O_SHARE,
83 MyFlags)) < 0)
84 goto err;
85
86 file_created= 1;
87 while ((Count=my_read(from_file, buff, sizeof(buff), MyFlags)) != 0)
88 {
89 if (Count == (uint) -1 ||
90 my_write(to_file,buff,Count,MYF(MyFlags | MY_NABP)))
91 goto err;
92 }
93
94 /* sync the destination file */
95 if (MyFlags & MY_SYNC)
96 {
97 if (my_sync(to_file, MyFlags))
98 goto err;
99 }
100
101 if (my_close(from_file,MyFlags) | my_close(to_file,MyFlags))
102 DBUG_RETURN(-1); /* Error on close */
103
104 from_file=to_file= -1; /* Files are closed */
105
106 /* Copy modes if possible */
107
108 if (MyFlags & MY_HOLD_ORIGINAL_MODES && !new_file_stat)
109 DBUG_RETURN(0); /* File copyed but not stat */
110 /* Copy modes */
111 if (chmod(to, stat_buff.st_mode & 07777))
112 {
113 my_errno= errno;
114 if (MyFlags & MY_WME)
115 my_error(EE_CHANGE_PERMISSIONS, MYF(ME_BELL), to, errno);
116 if (MyFlags & MY_FAE)
117 goto err;
118 }
119 #if !defined(__WIN__)
120 /* Copy ownership */
121 if (chown(to, stat_buff.st_uid, stat_buff.st_gid))
122 {
123 my_errno= errno;
124 if (MyFlags & MY_WME)
125 my_error(EE_CANT_COPY_OWNERSHIP, MYF(ME_BELL), to, errno);
126 if (MyFlags & MY_FAE)
127 goto err;
128 }
129 #endif
130
131 if (MyFlags & MY_COPYTIME)
132 {
133 struct utimbuf timep;
134 timep.actime = stat_buff.st_atime;
135 timep.modtime = stat_buff.st_mtime;
136 (void) utime((char*) to, &timep); /* last accessed and modified times */
137 }
138
139 DBUG_RETURN(0);
140 }
141
142 err:
143 if (from_file >= 0) (void) my_close(from_file,MyFlags);
144 if (to_file >= 0) (void) my_close(to_file, MyFlags);
145
146 /* attempt to delete the to-file we've partially written */
147 if (file_created)
148 (void) my_delete(to, MyFlags);
149
150 DBUG_RETURN(-1);
151 } /* my_copy */
152