./move.sh

1 files changed, 228 insertions, 0 deletions

diff --git a/src/libshared/conf-parser.h b/src/libshared/conf-parser.h
new file mode 100644
index 0000000000..a91c94c322
--- /dev/null
+++ b/src/libshared/conf-parser.h
@@ -0,0 +1,228 @@
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <syslog.h>
+
+#include "alloc-util.h"
+#include "log.h"
+#include "macro.h"
+
+/* An abstract parser for simple, line based, shallow configuration
+ * files consisting of variable assignments only. */
+
+/* Prototype for a parser for a specific configuration setting */
+typedef int (*ConfigParserCallback)(const char *unit,
+                                    const char *filename,
+                                    unsigned line,
+                                    const char *section,
+                                    unsigned section_line,
+                                    const char *lvalue,
+                                    int ltype,
+                                    const char *rvalue,
+                                    void *data,
+                                    void *userdata);
+
+/* Wraps information for parsing a specific configuration variable, to
+ * be stored in a simple array */
+typedef struct ConfigTableItem {
+        const char *section;            /* Section */
+        const char *lvalue;             /* Name of the variable */
+        ConfigParserCallback parse;     /* Function that is called to parse the variable's value */
+        int ltype;                      /* Distinguish different variables passed to the same callback */
+        void *data;                     /* Where to store the variable's data */
+} ConfigTableItem;
+
+/* Wraps information for parsing a specific configuration variable, to
+ * be stored in a gperf perfect hashtable */
+typedef struct ConfigPerfItem {
+        const char *section_and_lvalue; /* Section + "." + name of the variable */
+        ConfigParserCallback parse;     /* Function that is called to parse the variable's value */
+        int ltype;                      /* Distinguish different variables passed to the same callback */
+        size_t offset;                  /* Offset where to store data, from the beginning of userdata */
+} ConfigPerfItem;
+
+/* Prototype for a low-level gperf lookup function */
+typedef const ConfigPerfItem* (*ConfigPerfItemLookup)(const char *section_and_lvalue, unsigned length);
+
+/* Prototype for a generic high-level lookup function */
+typedef int (*ConfigItemLookup)(
+                const void *table,
+                const char *section,
+                const char *lvalue,
+                ConfigParserCallback *func,
+                int *ltype,
+                void **data,
+                void *userdata);
+
+/* Linear table search implementation of ConfigItemLookup, based on
+ * ConfigTableItem arrays */
+int config_item_table_lookup(const void *table, const char *section, const char *lvalue, ConfigParserCallback *func, int *ltype, void **data, void *userdata);
+
+/* gperf implementation of ConfigItemLookup, based on gperf
+ * ConfigPerfItem tables */
+int config_item_perf_lookup(const void *table, const char *section, const char *lvalue, ConfigParserCallback *func, int *ltype, void **data, void *userdata);
+
+int config_parse(const char *unit,
+                 const char *filename,
+                 FILE *f,
+                 const char *sections,  /* nulstr */
+                 ConfigItemLookup lookup,
+                 const void *table,
+                 bool relaxed,
+                 bool allow_include,
+                 bool warn,
+                 void *userdata);
+
+int config_parse_many(const char *conf_file,      /* possibly NULL */
+                      const char *conf_file_dirs, /* nulstr */
+                      const char *sections,       /* nulstr */
+                      ConfigItemLookup lookup,
+                      const void *table,
+                      bool relaxed,
+                      void *userdata);
+
+/* Generic parsers */
+int config_parse_int(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_unsigned(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_long(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_uint32(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_uint64(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_double(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line,  const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_iec_size(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_si_size(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_iec_uint64(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_bool(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_tristate(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_string(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_path(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_strv(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_sec(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_nsec(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_log_facility(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_log_level(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_signal(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_personality(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+
+#define DEFINE_CONFIG_PARSE_ENUM(function,name,type,msg)                \
+        int function(const char *unit,                                  \
+                     const char *filename,                              \
+                     unsigned line,                                     \
+                     const char *section,                               \
+                     unsigned section_line,                             \
+                     const char *lvalue,                                \
+                     int ltype,                                         \
+                     const char *rvalue,                                \
+                     void *data,                                        \
+                     void *userdata) {                                  \
+                                                                        \
+                type *i = data, x;                                      \
+                                                                        \
+                assert(filename);                                       \
+                assert(lvalue);                                         \
+                assert(rvalue);                                         \
+                assert(data);                                           \
+                                                                        \
+                if ((x = name##_from_string(rvalue)) < 0) {             \
+                        log_syntax(unit, LOG_ERR, filename, line, -x,   \
+                                   msg ", ignoring: %s", rvalue);       \
+                        return 0;                                       \
+                }                                                       \
+                                                                        \
+                *i = x;                                                 \
+                return 0;                                               \
+        }
+
+#define DEFINE_CONFIG_PARSE_ENUMV(function,name,type,invalid,msg)              \
+        int function(const char *unit,                                         \
+                     const char *filename,                                     \
+                     unsigned line,                                            \
+                     const char *section,                                      \
+                     unsigned section_line,                                    \
+                     const char *lvalue,                                       \
+                     int ltype,                                                \
+                     const char *rvalue,                                       \
+                     void *data,                                               \
+                     void *userdata) {                                         \
+                                                                               \
+                type **enums = data, x, *ys;                                   \
+                _cleanup_free_ type *xs = NULL;                                \
+                const char *word, *state;                                      \
+                size_t l, i = 0;                                               \
+                                                                               \
+                assert(filename);                                              \
+                assert(lvalue);                                                \
+                assert(rvalue);                                                \
+                assert(data);                                                  \
+                                                                               \
+                xs = new0(type, 1);                                            \
+                if(!xs)                                                        \
+                        return -ENOMEM;                                        \
+                                                                               \
+                *xs = invalid;                                                 \
+                                                                               \
+                FOREACH_WORD(word, l, rvalue, state) {                         \
+                        _cleanup_free_ char *en = NULL;                        \
+                        type *new_xs;                                          \
+                                                                               \
+                        en = strndup(word, l);                                 \
+                        if (!en)                                               \
+                                return -ENOMEM;                                \
+                                                                               \
+                        if ((x = name##_from_string(en)) < 0) {                \
+                                log_syntax(unit, LOG_ERR, filename, line,      \
+                                       -x, msg ", ignoring: %s", en);          \
+                                continue;                                      \
+                        }                                                      \
+                                                                               \
+                        for (ys = xs; x != invalid && *ys != invalid; ys++) {  \
+                                if (*ys == x) {                                \
+                                        log_syntax(unit, LOG_ERR, filename,    \
+                                              line, -x,                        \
+                                              "Duplicate entry, ignoring: %s", \
+                                              en);                             \
+                                        x = invalid;                           \
+                                }                                              \
+                        }                                                      \
+                                                                               \
+                        if (x == invalid)                                      \
+                                continue;                                      \
+                                                                               \
+                        *(xs + i) = x;                                         \
+                        new_xs = realloc(xs, (++i + 1) * sizeof(type));        \
+                        if (new_xs)                                            \
+                                xs = new_xs;                                   \
+                        else                                                   \
+                                return -ENOMEM;                                \
+                                                                               \
+                        *(xs + i) = invalid;                                   \
+                }                                                              \
+                                                                               \
+                free(*enums);                                                  \
+                *enums = xs;                                                   \
+                xs = NULL;                                                     \
+                                                                               \
+                return 0;                                                      \
+        }