machine: make sure unpriviliged "machinectl status" can show the machine's OS version

[elogind.git] / src / shared / conf-parser.c

diff --git a/src/shared/conf-parser.c b/src/shared/conf-parser.c
index 0a87a715136eafb552bd406137b829672a9dd2d6..439cfc58fc146e6d4f397b4e98ef25fbf2276f98 100644 (file)
--- a/src/shared/conf-parser.c
+++ b/src/shared/conf-parser.c
@@ -76,7 +76,7 @@ int log_syntax_internal(const char *unit, int level,
 }
 
 int config_item_table_lookup(
-                void *table,
+                const void *table,
                 const char *section,
                 const char *lvalue,
                 ConfigParserCallback *func,
@@ -84,7 +84,7 @@ int config_item_table_lookup(
                 void **data,
                 void *userdata) {
 
-        ConfigTableItem *t;
+        const ConfigTableItem *t;
 
         assert(table);
         assert(lvalue);
@@ -110,7 +110,7 @@ int config_item_table_lookup(
 }
 
 int config_item_perf_lookup(
-                void *table,
+                const void *table,
                 const char *section,
                 const char *lvalue,
                 ConfigParserCallback *func,
@@ -154,7 +154,7 @@ static int next_assignment(const char *unit,
                            const char *filename,
                            unsigned line,
                            ConfigItemLookup lookup,
-                           void *table,
+                           const void *table,
                            const char *section,
                            unsigned section_line,
                            const char *lvalue,
@@ -199,11 +199,12 @@ static int parse_line(const char* unit,
                       unsigned line,
                       const char *sections,
                       ConfigItemLookup lookup,
-                      void *table,
+                      const void *table,
                       bool relaxed,
                       bool allow_include,
                       char **section,
                       unsigned *section_line,
+                      bool *section_ignored,
                       char *l,
                       void *userdata) {
 
@@ -244,7 +245,7 @@ static int parse_line(const char* unit,
                 if (!fn)
                         return -ENOMEM;
 
-                return config_parse(unit, fn, NULL, sections, lookup, table, relaxed, false, userdata);
+                return config_parse(unit, fn, NULL, sections, lookup, table, relaxed, false, false, userdata);
         }
 
         if (*l == '[') {
@@ -266,7 +267,7 @@ static int parse_line(const char* unit,
 
                 if (sections && !nulstr_contains(sections, n)) {
 
-                        if (!relaxed)
+                        if (!relaxed && !startswith(n, "X-"))
                                 log_syntax(unit, LOG_WARNING, filename, line, EINVAL,
                                            "Unknown section '%s'. Ignoring.", n);
 
@@ -274,10 +275,12 @@ static int parse_line(const char* unit,
                         free(*section);
                         *section = NULL;
                         *section_line = 0;
+                        *section_ignored = true;
                 } else {
                         free(*section);
                         *section = n;
                         *section_line = line;
+                        *section_ignored = false;
                 }
 
                 return 0;
@@ -285,7 +288,7 @@ static int parse_line(const char* unit,
 
         if (sections && !*section) {
 
-                if (!relaxed)
+                if (!relaxed && !*section_ignored)
                         log_syntax(unit, LOG_WARNING, filename, line, EINVAL,
                                    "Assignment outside of section. Ignoring.");
 
@@ -320,14 +323,16 @@ int config_parse(const char *unit,
                  FILE *f,
                  const char *sections,
                  ConfigItemLookup lookup,
-                 void *table,
+                 const void *table,
                  bool relaxed,
                  bool allow_include,
+                 bool warn,
                  void *userdata) {
 
         _cleanup_free_ char *section = NULL, *continuation = NULL;
         _cleanup_fclose_ FILE *ours = NULL;
         unsigned line = 0, section_line = 0;
+        bool section_ignored = false;
         int r;
 
         assert(filename);
@@ -336,8 +341,12 @@ int config_parse(const char *unit,
         if (!f) {
                 f = ours = fopen(filename, "re");
                 if (!f) {
-                        log_error("Failed to open configuration file '%s': %m", filename);
-                        return -errno;
+                        /* Only log on request, except for ENOENT,
+                         * since we return 0 to the caller. */
+                        if (warn || errno == ENOENT)
+                                log_full(errno == ENOENT ? LOG_DEBUG : LOG_ERR,
+                                         "Failed to open configuration file '%s': %m", filename);
+                        return errno == ENOENT ? 0 : -errno;
                 }
         }
 
@@ -359,8 +368,11 @@ int config_parse(const char *unit,
 
                 if (continuation) {
                         c = strappend(continuation, l);
-                        if (!c)
+                        if (!c) {
+                                if (warn)
+                                        log_oom();
                                 return -ENOMEM;
+                        }
 
                         free(continuation);
                         continuation = NULL;
@@ -382,8 +394,11 @@ int config_parse(const char *unit,
                                 continuation = c;
                         else {
                                 continuation = strdup(l);
-                                if (!continuation)
+                                if (!continuation) {
+                                        if (warn)
+                                                log_oom();
                                         return -ENOMEM;
+                                }
                         }
 
                         continue;
@@ -399,12 +414,17 @@ int config_parse(const char *unit,
                                allow_include,
                                &section,
                                &section_line,
+                               &section_ignored,
                                p,
                                userdata);
                 free(c);
 
-                if (r < 0)
+                if (r < 0) {
+                        if (warn)
+                                log_warning("Failed to parse file '%s': %s",
+                                            filename, strerror(-r));
                         return r;
+                }
         }
 
         return 0;
@@ -585,7 +605,7 @@ int config_parse_string(
         assert(data);
 
         if (!utf8_is_valid(rvalue)) {
-                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "String is not UTF-8 clean, ignoring assignment: %s", rvalue);
+                log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
                 return 0;
         }
 
@@ -623,7 +643,7 @@ int config_parse_path(
         assert(data);
 
         if (!utf8_is_valid(rvalue)) {
-                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path is not UTF-8 clean, ignoring assignment: %s", rvalue);
+                log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
                 return 0;
         }
 
@@ -655,7 +675,8 @@ int config_parse_strv(const char *unit,
                       void *data,
                       void *userdata) {
 
-        char *** sv = data, *w, *state;
+        char ***sv = data;
+        const char *word, *state;
         size_t l;
         int r;
 
@@ -680,16 +701,15 @@ int config_parse_strv(const char *unit,
                 return 0;
         }
 
-        FOREACH_WORD_QUOTED(w, l, rvalue, state) {
+        FOREACH_WORD_QUOTED(word, l, rvalue, state) {
                 char *n;
 
-                n = cunescape_length(w, l);
+                n = strndup(word, l);
                 if (!n)
                         return log_oom();
 
                 if (!utf8_is_valid(n)) {
-                        log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                                   "String is not UTF-8 clean, ignoring: %s", rvalue);
+                        log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
                         continue;
                 }
 
@@ -697,6 +717,9 @@ int config_parse_strv(const char *unit,
                 if (r < 0)
                         return log_oom();
         }
+        if (!isempty(state))
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Trailing garbage, ignoring.");
 
         return 0;
 }