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MDEV-8743: protect myisam/aria MYD files and aria log files

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This commit is contained in:
Daniel Black
2018-03-02 11:52:20 +11:00
parent c54c490c59
commit 88fb8b2e36
4 changed files with 8 additions and 8 deletions
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2
storage/maria/ma_control_file.c
View File

@@ -273,7 +273,7 @@ CONTROL_FILE_ERROR ma_control_file_open(my_bool create_if_missing,
" file is probably in use by another process";
uint new_cf_create_time_size, new_cf_changeable_size, new_block_size;
my_off_t file_size;
int open_flags= O_BINARY | /*O_DIRECT |*/ O_RDWR;
int open_flags= O_BINARY | /*O_DIRECT |*/ O_RDWR | O_CLOEXEC;
int error= CONTROL_FILE_UNKNOWN_ERROR;
DBUG_ENTER("ma_control_file_open");

6
storage/maria/ma_loghandler.c
View File

@@ -942,7 +942,7 @@ static File create_logfile_by_number_no_cache(uint32 file_no)
/* TODO: add O_DIRECT to open flags (when buffer is aligned) */
if ((file= mysql_file_create(key_file_translog,
translog_filename_by_fileno(file_no, path),
0, O_BINARY | O_RDWR, MYF(MY_WME))) < 0)
0, O_BINARY | O_RDWR | O_CLOEXEC, MYF(MY_WME))) < 0)
{
DBUG_PRINT("error", ("Error %d during creating file '%s'", errno, path));
translog_stop_writing();
@@ -979,7 +979,7 @@ static File open_logfile_by_number_no_cache(uint32 file_no)
/* TODO: use mysql_file_create() */
if ((file= mysql_file_open(key_file_translog,
translog_filename_by_fileno(file_no, path),
log_descriptor.open_flags,
log_descriptor.open_flags | O_CLOEXEC,
MYF(MY_WME))) < 0)
{
DBUG_PRINT("error", ("Error %d during opening file '%s'", errno, path));
@@ -3263,7 +3263,7 @@ static my_bool translog_get_last_page_addr(TRANSLOG_ADDRESS *addr,
File fd;
if ((fd= mysql_file_open(key_file_translog,
translog_filename_by_fileno(file_no, path),
O_RDONLY, (no_errors ? MYF(0) : MYF(MY_WME)))) < 0)
O_RDONLY | O_CLOEXEC, (no_errors ? MYF(0) : MYF(MY_WME)))) < 0)
{
my_errno= errno;
DBUG_PRINT("error", ("Error %d during opening file #%d",

4
storage/maria/ma_open.c
View File

@@ -1885,7 +1885,7 @@ int _ma_open_datafile(MARIA_HA *info, MARIA_SHARE *share)
DEBUG_SYNC_C("mi_open_datafile");
info->dfile.file= share->bitmap.file.file=
mysql_file_open(key_file_dfile, share->data_file_name.str,
share->mode | O_SHARE, MYF(flags));
share->mode | O_SHARE | O_CLOEXEC, MYF(flags));
return info->dfile.file >= 0 ? 0 : 1;
}
@@ -1899,7 +1899,7 @@ int _ma_open_keyfile(MARIA_SHARE *share)
mysql_mutex_lock(&share->intern_lock);
share->kfile.file= mysql_file_open(key_file_kfile,
share->unique_file_name.str,
share->mode | O_SHARE | O_NOFOLLOW,
share->mode | O_SHARE | O_NOFOLLOW | O_CLOEXEC,
MYF(MY_WME | MY_NOSYMLINKS));
mysql_mutex_unlock(&share->intern_lock);
return (share->kfile.file < 0);

4
storage/myisam/mi_open.c
View File

@@ -1249,7 +1249,7 @@ int mi_open_datafile(MI_INFO *info, MYISAM_SHARE *share)
myf flags= MY_WME | (share->mode & O_NOFOLLOW ? MY_NOSYMLINKS: 0);
DEBUG_SYNC_C("mi_open_datafile");
info->dfile= mysql_file_open(mi_key_file_dfile, share->data_file_name,
share->mode | O_SHARE, MYF(flags));
share->mode | O_SHARE | O_CLOEXEC, MYF(flags));
return info->dfile >= 0 ? 0 : 1;
}
@@ -1258,7 +1258,7 @@ int mi_open_keyfile(MYISAM_SHARE *share)
{
if ((share->kfile= mysql_file_open(mi_key_file_kfile,
share->unique_file_name,
share->mode | O_SHARE | O_NOFOLLOW,
share->mode | O_SHARE | O_NOFOLLOW | O_CLOEXEC,
MYF(MY_NOSYMLINKS | MY_WME))) < 0)
return 1;
return 0;