summaryrefslogtreecommitdiffstats
path: root/mysys/my_copy.c
diff options
context:
space:
mode:
Diffstat (limited to 'mysys/my_copy.c')
-rw-r--r--mysys/my_copy.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/mysys/my_copy.c b/mysys/my_copy.c
new file mode 100644
index 00000000..94ad3f6b
--- /dev/null
+++ b/mysys/my_copy.c
@@ -0,0 +1,151 @@
+/*
+ Copyright (c) 2000, 2010, Oracle and/or its affiliates
+
+ 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 02110-1335 USA */
+
+#include "mysys_priv.h"
+#include "mysys_err.h"
+#include <my_dir.h> /* for stat */
+#include <m_string.h>
+#if defined(HAVE_UTIME_H)
+#include <utime.h>
+#elif defined(HAVE_SYS_UTIME_H)
+#include <sys/utime.h>
+#elif !defined(HPUX10)
+#include <time.h>
+struct utimbuf {
+ time_t actime;
+ time_t modtime;
+};
+#endif
+
+
+/*
+ int my_copy(const char *from, const char *to, myf MyFlags)
+
+ NOTES
+ Ordinary ownership and accesstimes are copied from 'from-file'
+ If MyFlags & MY_HOLD_ORIGINAL_MODES is set and to-file exists then
+ the modes of to-file isn't changed
+ If MyFlags & MY_DONT_OVERWRITE_FILE is set, we will give an error
+ if the file existed.
+
+ WARNING
+ Don't set MY_FNABP or MY_NABP bits on when calling this function !
+
+ RETURN
+ 0 ok
+ # Error
+
+*/
+
+int my_copy(const char *from, const char *to, myf MyFlags)
+{
+ size_t Count;
+ my_bool new_file_stat= 0; /* 1 if we could stat "to" */
+ int create_flag;
+ File from_file,to_file;
+ uchar buff[IO_SIZE];
+ MY_STAT stat_buff,new_stat_buff;
+ my_bool file_created= 0;
+ DBUG_ENTER("my_copy");
+ DBUG_PRINT("my",("from %s to %s MyFlags %lu", from, to, MyFlags));
+
+ from_file=to_file= -1;
+ DBUG_ASSERT(!(MyFlags & (MY_FNABP | MY_NABP))); /* for my_read/my_write */
+ if (MyFlags & MY_HOLD_ORIGINAL_MODES) /* Copy stat if possible */
+ new_file_stat= MY_TEST(my_stat((char*) to, &new_stat_buff, MYF(0)));
+
+ if ((from_file=my_open(from,O_RDONLY | O_SHARE,MyFlags)) >= 0)
+ {
+ if (!my_stat(from, &stat_buff, MyFlags))
+ {
+ my_errno=errno;
+ goto err;
+ }
+ if (MyFlags & MY_HOLD_ORIGINAL_MODES && new_file_stat)
+ stat_buff=new_stat_buff;
+ create_flag= (MyFlags & MY_DONT_OVERWRITE_FILE) ? O_EXCL : O_TRUNC;
+
+ if ((to_file= my_create(to,(int) stat_buff.st_mode,
+ O_WRONLY | create_flag | O_BINARY | O_SHARE,
+ MyFlags)) < 0)
+ goto err;
+
+ file_created= 1;
+ while ((Count=my_read(from_file, buff, sizeof(buff), MyFlags)) != 0)
+ {
+ if (Count == (uint) -1 ||
+ my_write(to_file,buff,Count,MYF(MyFlags | MY_NABP)))
+ goto err;
+ }
+
+ /* sync the destination file */
+ if (MyFlags & MY_SYNC)
+ {
+ if (my_sync(to_file, MyFlags))
+ goto err;
+ }
+
+ if (my_close(from_file,MyFlags) | my_close(to_file,MyFlags))
+ DBUG_RETURN(-1); /* Error on close */
+
+ from_file=to_file= -1; /* Files are closed */
+
+ /* Copy modes if possible */
+
+ if (MyFlags & MY_HOLD_ORIGINAL_MODES && !new_file_stat)
+ DBUG_RETURN(0); /* File copyed but not stat */
+ /* Copy modes */
+ if (chmod(to, stat_buff.st_mode & 07777))
+ {
+ my_errno= errno;
+ if (MyFlags & MY_WME)
+ my_error(EE_CHANGE_PERMISSIONS, MYF(ME_BELL), to, errno);
+ if (MyFlags & MY_FAE)
+ goto err;
+ }
+#if !defined(__WIN__)
+ /* Copy ownership */
+ if (chown(to, stat_buff.st_uid, stat_buff.st_gid))
+ {
+ my_errno= errno;
+ if (MyFlags & MY_WME)
+ my_error(EE_CANT_COPY_OWNERSHIP, MYF(ME_BELL), to, errno);
+ if (MyFlags & MY_FAE)
+ goto err;
+ }
+#endif
+
+ if (MyFlags & MY_COPYTIME)
+ {
+ struct utimbuf timep;
+ timep.actime = stat_buff.st_atime;
+ timep.modtime = stat_buff.st_mtime;
+ (void) utime((char*) to, &timep); /* last accessed and modified times */
+ }
+
+ DBUG_RETURN(0);
+ }
+
+err:
+ if (from_file >= 0) (void) my_close(from_file,MyFlags);
+ if (to_file >= 0) (void) my_close(to_file, MyFlags);
+
+ /* attempt to delete the to-file we've partially written */
+ if (file_created)
+ (void) my_delete(to, MyFlags);
+
+ DBUG_RETURN(-1);
+} /* my_copy */