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safer creation of temp files used in replication of LOAD DATA INFILE.

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When we come to create these, they may already exist and it's necessary to delete these old, useless copies.


BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted
This commit is contained in:
unknown
2005-03-17 14:39:39 +01:00
parent 44d66d26dc
commit 93c928d3a7
2 changed files with 11 additions and 6 deletions
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16
sql/log_event.cc
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@ -2360,8 +2360,10 @@ int Create_file_log_event::exec_event(struct st_relay_log_info* rli)
strmov(p, ".info"); // strmov takes less code than memcpy
strnmov(proc_info, "Making temp file ", 17); // no end 0
thd->proc_info= proc_info;
if ((fd = my_open(fname_buf, O_WRONLY|O_CREAT|O_BINARY|O_TRUNC,
MYF(MY_WME))) < 0 ||
my_delete(fname_buf, MYF(0)); // old copy may exist already
if ((fd= my_create(fname_buf, CREATE_MODE,
O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
MYF(MY_WME))) < 0 ||
init_io_cache(&file, fd, IO_SIZE, WRITE_CACHE, (my_off_t)0, 0,
MYF(MY_WME|MY_NABP)))
{
@ -2383,8 +2385,10 @@ int Create_file_log_event::exec_event(struct st_relay_log_info* rli)
my_close(fd, MYF(0));
// fname_buf now already has .data, not .info, because we did our trick
if ((fd = my_open(fname_buf, O_WRONLY|O_CREAT|O_BINARY|O_TRUNC,
MYF(MY_WME))) < 0)
my_delete(fname_buf, MYF(0)); // old copy may exist already
if ((fd= my_create(fname_buf, CREATE_MODE,
O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
MYF(MY_WME))) < 0)
{
slave_print_error(rli,my_errno, "Error in Create_file event: could not open file '%s'", fname_buf);
goto err;
@ -2426,7 +2430,7 @@ int Append_block_log_event::exec_event(struct st_relay_log_info* rli)
memcpy(p, ".data", 6);
strnmov(proc_info, "Making temp file ", 17); // no end 0
thd->proc_info= proc_info;
if ((fd = my_open(fname, O_WRONLY|O_APPEND|O_BINARY, MYF(MY_WME))) < 0)
if ((fd = my_open(fname, O_WRONLY|O_APPEND|O_BINARY|O_NOFOLLOW, MYF(MY_WME))) < 0)
{
slave_print_error(rli,my_errno, "Error in Append_block event: could not open file '%s'", fname);
goto err;
@ -2455,7 +2459,7 @@ int Execute_load_log_event::exec_event(struct st_relay_log_info* rli)
Load_log_event* lev = 0;
memcpy(p, ".info", 6);
if ((fd = my_open(fname, O_RDONLY|O_BINARY, MYF(MY_WME))) < 0 ||
if ((fd = my_open(fname, O_RDONLY|O_BINARY|O_NOFOLLOW, MYF(MY_WME))) < 0 ||
init_io_cache(&file, fd, IO_SIZE, READ_CACHE, (my_off_t)0, 0,
MYF(MY_WME|MY_NABP)))
{