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int my_copy(const char *from, const char *to, myf MyFlags)
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bool new_file_stat= 0; /* 1 if we could stat "to" */
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File from_file,to_file;
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unsigned char buff[IO_SIZE];
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struct stat stat_buff,new_stat_buff;
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DBUG_ENTER("my_copy");
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DBUG_PRINT("my",("from %s to %s MyFlags %d", from, to, MyFlags));
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from_file=to_file= -1;
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assert(!(MyFlags & (MY_FNABP | MY_NABP))); /* for my_read/my_write */
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DBUG_ASSERT(!(MyFlags & (MY_FNABP | MY_NABP))); /* for my_read/my_write */
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if (MyFlags & MY_HOLD_ORIGINAL_MODES) /* Copy stat if possible */
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new_file_stat= test(!stat((char*) to, &new_stat_buff));
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if ((from_file=my_open(from,O_RDONLY,MyFlags)) >= 0)
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if ((from_file=my_open(from,O_RDONLY | O_SHARE,MyFlags)) >= 0)
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if (stat(from, &stat_buff))
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create_flag= (MyFlags & MY_DONT_OVERWRITE_FILE) ? O_EXCL : O_TRUNC;
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if ((to_file= my_create(to,(int) stat_buff.st_mode,
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O_WRONLY | create_flag,
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O_WRONLY | create_flag | O_BINARY | O_SHARE,
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if (my_close(from_file,MyFlags) | my_close(to_file,MyFlags))
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return(-1); /* Error on close */
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DBUG_RETURN(-1); /* Error on close */
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/* Copy modes if possible */
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if (MyFlags & MY_HOLD_ORIGINAL_MODES && !new_file_stat)
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return(0); /* File copyed but not stat */
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chmod(to, stat_buff.st_mode & 07777); /* Copy modes */
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chown(to, stat_buff.st_uid,stat_buff.st_gid); /* Copy ownership */
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DBUG_RETURN(0); /* File copyed but not stat */
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VOID(chmod(to, stat_buff.st_mode & 07777)); /* Copy modes */
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VOID(chown(to, stat_buff.st_uid,stat_buff.st_gid)); /* Copy ownership */
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if (MyFlags & MY_COPYTIME)
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struct utimbuf timep;
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timep.actime = stat_buff.st_atime;
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timep.modtime = stat_buff.st_mtime;
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utime((char*) to, &timep); /* last accessed and modified times */
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VOID(utime((char*) to, &timep)); /* last accessed and modified times */
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if (from_file >= 0) my_close(from_file,MyFlags);
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if (from_file >= 0) VOID(my_close(from_file,MyFlags));
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if (to_file >= 0)
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my_close(to_file, MyFlags);
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VOID(my_close(to_file, MyFlags));
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/* attempt to delete the to-file we've partially written */
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my_delete(to, MyFlags);
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VOID(my_delete(to, MyFlags));