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deforaos-jobs: revisit the locking

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This commit is contained in:
Pierre Pronchery 2021-11-10 04:01:52 +01:00
parent 152baa6274
commit d68ac0e3c5
1 changed files with 13 additions and 9 deletions
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22
src/deforaos-jobs
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@ -95,19 +95,19 @@ _database_exec()
return $?
fi
_database_init || return 2
_database_lock || return 3
_database_init || return 2
_database_lock "$DATABASE_FILE" || return 3
_database_query "$QUERY_EXEC_SELECT" | (IFS="|"
read header
read empty jobs_id command empty
if [ -z "$jobs_id" ]; then
_database_unlock || return 4
_database_unlock "$DATABASE_FILE" || return 4
return 0
fi
#XXX TOCTOU
QUERY="UPDATE jobs SET started=datetime() WHERE jobs_id='$jobs_id'"
_database_query "$QUERY" > "$DEVNULL"
_database_unlock
_database_unlock "$DATABASE_FILE"
code=-1
if [ -n "$command" ]; then
_info "Executing command: $command"
@ -133,9 +133,9 @@ _database_init()
fi
if [ ! -f "$DATABASE_FILE" ]; then
_info "Initializing the database"
_database_lock || return 3
_database_query "$QUERY_INIT" > "$DEVNULL" || ret=2
_database_unlock || return 4
_database_lock "$DATABASE_FILE" || return 3
_database_query "$QUERY_INIT" > "$DEVNULL" || ret=2
_database_unlock "$DATABASE_FILE" || return 4
fi
return $ret
}
@ -157,7 +157,9 @@ _database_list()
#database_lock
_database_lock()
{
$DEBUG $LOCK "${DATABASE_FILE%.db}"
filename="$1"
$DEBUG $LOCK "$filename.lock"
}
@ -171,7 +173,9 @@ _database_query()
#database_unlock
_database_unlock()
{
$DEBUG $UNLOCK "${DATABASE_FILE%.db}"
filename="$1"
$DEBUG $UNLOCK "$filename.lock"
}