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MySQL 5.1: mysql/src/5.1-dbg/mysys/my_copy.c File Reference

mysql/src/5.1-dbg/mysys/my_copy.c File Reference

#include "mysys_priv.h"
#include <my_dir.h>
#include <m_string.h>
#include <time.h>

Include dependency graph for my_copy.c:


Classes
struct	utimbuf
Functions
int	my_copy (const char from, const char to, myf MyFlags)

Function Documentation

int my_copy	(	const char *	from,
		const char *	to,
		myf	MyFlags
	)

Definition at line 52 of file my_copy.c.

References utimbuf::actime, create_flag, DBUG_ASSERT, DBUG_ENTER, DBUG_PRINT, DBUG_RETURN, err, errno, IO_SIZE, utimbuf::modtime, my_close(), MY_COPYTIME, my_create(), MY_DONT_OVERWRITE_FILE, my_errno, MY_FNABP, MY_HOLD_ORIGINAL_MODES, MY_NABP, my_open(), my_read, my_stat(), MY_STAT, my_write, MYF, O_BINARY, O_SHARE, test, and VOID.

Referenced by ha_myisam::backup(), compress(), mysql_create_like_table(), prepare_for_restore(), and ha_myisam::restore().

00053 {
00054   uint Count;
00055   my_bool new_file_stat= 0; /* 1 if we could stat "to" */
00056   int create_flag;
00057   File from_file,to_file;
00058   char buff[IO_SIZE];
00059   MY_STAT stat_buff,new_stat_buff;
00060   DBUG_ENTER("my_copy");
00061   DBUG_PRINT("my",("from %s to %s MyFlags %d", from, to, MyFlags));
00062 
00063   from_file=to_file= -1;
00064   DBUG_ASSERT(!(MyFlags & (MY_FNABP | MY_NABP))); /* for my_read/my_write */
00065   if (MyFlags & MY_HOLD_ORIGINAL_MODES)         /* Copy stat if possible */
00066     new_file_stat= test(my_stat((char*) to, &new_stat_buff, MYF(0)));
00067 
00068   if ((from_file=my_open(from,O_RDONLY | O_SHARE,MyFlags)) >= 0)
00069   {
00070     if (!my_stat(from, &stat_buff, MyFlags))
00071     {
00072       my_errno=errno;
00073       goto err;
00074     }
00075     if (MyFlags & MY_HOLD_ORIGINAL_MODES && new_file_stat)
00076       stat_buff=new_stat_buff;
00077     create_flag= (MyFlags & MY_DONT_OVERWRITE_FILE) ? O_EXCL : O_TRUNC;
00078 
00079     if ((to_file=  my_create(to,(int) stat_buff.st_mode,
00080                              O_WRONLY | create_flag | O_BINARY | O_SHARE,
00081                              MyFlags)) < 0)
00082       goto err;
00083 
00084     while ((Count=my_read(from_file,buff,IO_SIZE,MyFlags)) != 0)
00085         if (Count == (uint) -1 ||
00086             my_write(to_file,buff,Count,MYF(MyFlags | MY_NABP)))
00087         goto err;
00088 
00089     if (my_close(from_file,MyFlags) | my_close(to_file,MyFlags))
00090       DBUG_RETURN(-1);                          /* Error on close */
00091 
00092     /* Copy modes if possible */
00093 
00094     if (MyFlags & MY_HOLD_ORIGINAL_MODES && !new_file_stat)
00095         DBUG_RETURN(0);                 /* File copyed but not stat */
00096     VOID(chmod(to, stat_buff.st_mode & 07777)); /* Copy modes */
00097 #if !defined(__WIN__) && !defined(__NETWARE__)
00098     VOID(chown(to, stat_buff.st_uid,stat_buff.st_gid)); /* Copy ownership */
00099 #endif
00100 #if !defined(VMS) && !defined(__ZTC__)
00101     if (MyFlags & MY_COPYTIME)
00102     {
00103       struct utimbuf timep;
00104       timep.actime  = stat_buff.st_atime;
00105       timep.modtime = stat_buff.st_mtime;
00106       VOID(utime((char*) to, &timep)); /* last accessed and modified times */
00107     }
00108 #endif
00109     DBUG_RETURN(0);
00110   }
00111 
00112 err:
00113   if (from_file >= 0) VOID(my_close(from_file,MyFlags));
00114   if (to_file >= 0)   VOID(my_close(to_file,MyFlags));
00115   DBUG_RETURN(-1);
00116 } /* my_copy */

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Generated on Sat Sep 9 02:11:00 2006 for MySQL 5.1 by

1.4.7

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mysql/src/5.1-dbg/mysys/my_copy.c File Reference

Classes

Functions

Function Documentation