e8e581bf25
The information about the unit for which files are being parsed is passed all the way down. This way messages land in the journal with proper UNIT=... or USER_UNIT=... attribution. 'systemctl status' and 'journalctl -u' not displaying those messages has been a source of confusion for users, since the journal entry for a misspelt setting was often logged quite a bit earlier than the failure to start a unit. Based-on-a-patch-by: Oleksii Shevchuk <alxchk@gmail.com>
151 lines
9.7 KiB
C
151 lines
9.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdio.h>
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#include <stdbool.h>
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#include "macro.h"
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/* An abstract parser for simple, line based, shallow configuration
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* files consisting of variable assignments only. */
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/* Prototype for a parser for a specific configuration setting */
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typedef int (*ConfigParserCallback)(const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata);
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/* Wraps information for parsing a specific configuration variable, to
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* be stored in a simple array */
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typedef struct ConfigTableItem {
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const char *section; /* Section */
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const char *lvalue; /* Name of the variable */
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ConfigParserCallback parse; /* Function that is called to parse the variable's value */
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int ltype; /* Distinguish different variables passed to the same callback */
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void *data; /* Where to store the variable's data */
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} ConfigTableItem;
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/* Wraps information for parsing a specific configuration variable, to
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* ve srored in a gperf perfect hashtable */
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typedef struct ConfigPerfItem {
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const char *section_and_lvalue; /* Section + "." + name of the variable */
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ConfigParserCallback parse; /* Function that is called to parse the variable's value */
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int ltype; /* Distinguish different variables passed to the same callback */
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size_t offset; /* Offset where to store data, from the beginning of userdata */
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} ConfigPerfItem;
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/* Prototype for a low-level gperf lookup function */
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typedef const ConfigPerfItem* (*ConfigPerfItemLookup)(const char *section_and_lvalue, unsigned length);
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/* Prototype for a generic high-level lookup function */
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typedef int (*ConfigItemLookup)(
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void *table,
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const char *section,
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const char *lvalue,
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ConfigParserCallback *func,
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int *ltype,
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void **data,
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void *userdata);
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/* Linear table search implementation of ConfigItemLookup, based on
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* ConfigTableItem arrays */
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int config_item_table_lookup(void *table, const char *section, const char *lvalue, ConfigParserCallback *func, int *ltype, void **data, void *userdata);
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/* gperf implementation of ConfigItemLookup, based on gperf
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* ConfigPerfItem tables */
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int config_item_perf_lookup(void *table, const char *section, const char *lvalue, ConfigParserCallback *func, int *ltype, void **data, void *userdata);
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int config_parse(const char *unit,
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const char *filename,
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FILE *f,
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const char *sections, /* nulstr */
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ConfigItemLookup lookup,
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void *table,
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bool relaxed,
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void *userdata);
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/* Generic parsers */
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int config_parse_int(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_unsigned(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_long(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_uint64(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_double(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_bytes_size(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_bytes_off(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_bool(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_tristate(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_string(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_path(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_strv(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_path_strv(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_sec(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_nsec(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_mode(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_facility(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_level(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_set_status(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int log_syntax_internal(const char *unit, int level,
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const char *file, unsigned line, const char *func,
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const char *config_file, unsigned config_line,
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int error, const char *format, ...) _printf_attr_(9, 10);
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#define log_syntax(unit, level, config_file, config_line, error, ...) \
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log_syntax_internal(unit, level, \
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__FILE__, __LINE__, __func__, \
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config_file, config_line, \
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error, __VA_ARGS__)
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#define DEFINE_CONFIG_PARSE_ENUM(function,name,type,msg) \
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int function(const char *unit, \
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const char *filename, \
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unsigned line, \
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const char *section, \
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const char *lvalue, \
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int ltype, \
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const char *rvalue, \
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void *data, \
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void *userdata) { \
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\
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type *i = data, x; \
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\
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assert(filename); \
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assert(lvalue); \
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assert(rvalue); \
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assert(data); \
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\
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if ((x = name##_from_string(rvalue)) < 0) { \
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log_syntax(unit, LOG_ERR, filename, line, -x, \
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msg ", ignoring: %s", rvalue); \
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return 0; \
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} \
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\
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*i = x; \
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return 0; \
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}
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