mariadb/client/my_readline.h
Dmitry Shulga 980868eb4e Fixed bug#57450 - mysql client enter in an infinite loop
if the standard input is a directory.

The problem is that mysql monitor try to read from stdin without
checking input source type.

The solution is to stop reading data from standard input if a call
to read(2) failed.

A new test case was added into mysql.test.

client/my_readline.h:
  Data members error and truncated was added to LINE_BUFFER structure.
  These data members used instead of out parameters in functions
  batch_readline, intern_read_line.
client/mysql.cc:
  read_and_execute() was modified: set status.exit_status to 1
  when the error occured while reading the next command line in
  non-interactive mode. Also the value of the truncated attribute
  of structure LINE_BUFF is taken into account only for non-iteractive mode.
client/readline.cc:
  intern_read_line() was modified: cancel reading from input if
  fill_buffer() returns -1, e.g. if call to read failed.
  batch_readline was modified: set the error data member of LINE_BUFFER
  structure to value of my_errno when system error happened during call
  to my_read/my_realloc.
mysql-test/t/mysql.test:
  Test for bug#57450 was added.
2011-02-05 11:02:00 +06:00

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C

/* Copyright (C) 2000 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* readline for batch mode */
typedef struct st_line_buffer
{
File file;
char *buffer; /* The buffer itself, grown as needed. */
char *end; /* Pointer at buffer end */
char *start_of_line,*end_of_line;
uint bufread; /* Number of bytes to get with each read(). */
uint eof;
ulong max_size;
ulong read_length; /* Length of last read string */
int error;
bool truncated;
} LINE_BUFFER;
extern LINE_BUFFER *batch_readline_init(ulong max_size,FILE *file);
extern LINE_BUFFER *batch_readline_command(LINE_BUFFER *buffer, char * str);
extern char *batch_readline(LINE_BUFFER *buffer);
extern void batch_readline_end(LINE_BUFFER *buffer);