chiark / gitweb /
networkd: make IP forwarding for IPv4 and IPv6 individually configurable
[elogind.git] / src / shared / conf-parser.c
index 595bb51a27151c8a7e5380a6260c1a5ddc4426d5..0b1af6c577f6d65ca0a918a9f3b46a81247cb4c3 100644 (file)
 #include <errno.h>
 #include <assert.h>
 #include <stdlib.h>
+#include <netinet/ether.h>
 
 #include "conf-parser.h"
+#include "conf-files.h"
 #include "util.h"
 #include "macro.h"
 #include "strv.h"
 #include "path-util.h"
 #include "set.h"
 #include "exit-status.h"
+#include "sd-messages.h"
+
+int log_syntax_internal(
+                const char *unit,
+                int level,
+                const char *file,
+                int line,
+                const char *func,
+                const char *config_file,
+                unsigned config_line,
+                int error,
+                const char *format, ...) {
+
+        _cleanup_free_ char *msg = NULL;
+        int r;
+        va_list ap;
+
+        va_start(ap, format);
+        r = vasprintf(&msg, format, ap);
+        va_end(ap);
+        if (r < 0)
+                return log_oom();
+
+        if (unit)
+                r = log_struct_internal(level,
+                                        error,
+                                        file, line, func,
+                                        getpid() == 1 ? "UNIT=%s" : "USER_UNIT=%s", unit,
+                                        LOG_MESSAGE_ID(SD_MESSAGE_CONFIG_ERROR),
+                                        "CONFIG_FILE=%s", config_file,
+                                        "CONFIG_LINE=%u", config_line,
+                                        LOG_MESSAGE("[%s:%u] %s", config_file, config_line, msg),
+                                        NULL);
+        else
+                r = log_struct_internal(level,
+                                        error,
+                                        file, line, func,
+                                        LOG_MESSAGE_ID(SD_MESSAGE_CONFIG_ERROR),
+                                        "CONFIG_FILE=%s", config_file,
+                                        "CONFIG_LINE=%u", config_line,
+                                        LOG_MESSAGE("[%s:%u] %s", config_file, config_line, msg),
+                                        NULL);
+
+        return r;
+}
 
 int config_item_table_lookup(
-                void *table,
+                const void *table,
                 const char *section,
                 const char *lvalue,
                 ConfigParserCallback *func,
@@ -44,7 +91,7 @@ int config_item_table_lookup(
                 void **data,
                 void *userdata) {
 
-        ConfigTableItem *t;
+        const ConfigTableItem *t;
 
         assert(table);
         assert(lvalue);
@@ -70,7 +117,7 @@ int config_item_table_lookup(
 }
 
 int config_item_perf_lookup(
-                void *table,
+                const void *table,
                 const char *section,
                 const char *lvalue,
                 ConfigParserCallback *func,
@@ -110,16 +157,17 @@ int config_item_perf_lookup(
 }
 
 /* Run the user supplied parser for an assignment */
-static int next_assignment(
-                const char *filename,
-                unsigned line,
-                ConfigItemLookup lookup,
-                void *table,
-                const char *section,
-                const char *lvalue,
-                const char *rvalue,
-                bool relaxed,
-                void *userdata) {
+static int next_assignment(const char *unit,
+                           const char *filename,
+                           unsigned line,
+                           ConfigItemLookup lookup,
+                           const void *table,
+                           const char *section,
+                           unsigned section_line,
+                           const char *lvalue,
+                           const char *rvalue,
+                           bool relaxed,
+                           void *userdata) {
 
         ConfigParserCallback func = NULL;
         int ltype = 0;
@@ -138,29 +186,34 @@ static int next_assignment(
 
         if (r > 0) {
                 if (func)
-                        return func(filename, line, section, lvalue, ltype, rvalue, data, userdata);
+                        return func(unit, filename, line, section, section_line,
+                                    lvalue, ltype, rvalue, data, userdata);
 
                 return 0;
         }
 
         /* Warn about unknown non-extension fields. */
         if (!relaxed && !startswith(lvalue, "X-"))
-                log_info("[%s:%u] Unknown lvalue '%s' in section '%s'. Ignoring.", filename, line, lvalue, section);
+                log_syntax(unit, LOG_WARNING, filename, line, EINVAL,
+                           "Unknown lvalue '%s' in section '%s'", lvalue, section);
 
         return 0;
 }
 
 /* Parse a variable assignment line */
-static int parse_line(
-                const char *filename,
-                unsigned line,
-                const char *sections,
-                ConfigItemLookup lookup,
-                void *table,
-                bool relaxed,
-                char **section,
-                char *l,
-                void *userdata) {
+static int parse_line(const char* unit,
+                      const char *filename,
+                      unsigned line,
+                      const char *sections,
+                      ConfigItemLookup lookup,
+                      const void *table,
+                      bool relaxed,
+                      bool allow_include,
+                      char **section,
+                      unsigned *section_line,
+                      bool *section_ignored,
+                      char *l,
+                      void *userdata) {
 
         char *e;
 
@@ -174,21 +227,32 @@ static int parse_line(
         if (!*l)
                 return 0;
 
-        if (strchr(COMMENTS, *l))
+        if (strchr(COMMENTS "\n", *l))
                 return 0;
 
         if (startswith(l, ".include ")) {
-                char *fn;
-                int r;
+                _cleanup_free_ char *fn = NULL;
+
+                /* .includes are a bad idea, we only support them here
+                 * for historical reasons. They create cyclic include
+                 * problems and make it difficult to detect
+                 * configuration file changes with an easy
+                 * stat(). Better approaches, such as .d/ drop-in
+                 * snippets exist.
+                 *
+                 * Support for them should be eventually removed. */
+
+                if (!allow_include) {
+                        log_syntax(unit, LOG_ERR, filename, line, EBADMSG,
+                                   ".include not allowed here. Ignoring.");
+                        return 0;
+                }
 
                 fn = file_in_same_dir(filename, strstrip(l+9));
                 if (!fn)
                         return -ENOMEM;
 
-                r = config_parse(fn, NULL, sections, lookup, table, relaxed, userdata);
-                free(fn);
-
-                return r;
+                return config_parse(unit, fn, NULL, sections, lookup, table, relaxed, false, false, userdata);
         }
 
         if (*l == '[') {
@@ -199,7 +263,8 @@ static int parse_line(
                 assert(k > 0);
 
                 if (l[k-1] != ']') {
-                        log_error("[%s:%u] Invalid section header.", filename, line);
+                        log_syntax(unit, LOG_ERR, filename, line, EBADMSG,
+                                   "Invalid section header '%s'", l);
                         return -EBADMSG;
                 }
 
@@ -209,14 +274,20 @@ static int parse_line(
 
                 if (sections && !nulstr_contains(sections, n)) {
 
-                        if (!relaxed)
-                                log_info("[%s:%u] Unknown section '%s'. Ignoring.", filename, line, n);
+                        if (!relaxed && !startswith(n, "X-"))
+                                log_syntax(unit, LOG_WARNING, filename, line, EINVAL,
+                                           "Unknown section '%s'. Ignoring.", n);
 
                         free(n);
+                        free(*section);
                         *section = NULL;
+                        *section_line = 0;
+                        *section_ignored = true;
                 } else {
                         free(*section);
                         *section = n;
+                        *section_line = line;
+                        *section_ignored = false;
                 }
 
                 return 0;
@@ -224,63 +295,70 @@ static int parse_line(
 
         if (sections && !*section) {
 
-                if (!relaxed)
-                        log_info("[%s:%u] Assignment outside of section. Ignoring.", filename, line);
+                if (!relaxed && !*section_ignored)
+                        log_syntax(unit, LOG_WARNING, filename, line, EINVAL,
+                                   "Assignment outside of section. Ignoring.");
 
                 return 0;
         }
 
         e = strchr(l, '=');
         if (!e) {
-                log_error("[%s:%u] Missing '='.", filename, line);
+                log_syntax(unit, LOG_WARNING, filename, line, EINVAL, "Missing '='.");
                 return -EBADMSG;
         }
 
         *e = 0;
         e++;
 
-        return next_assignment(
-                        filename,
-                        line,
-                        lookup,
-                        table,
-                        *section,
-                        strstrip(l),
-                        strstrip(e),
-                        relaxed,
-                        userdata);
+        return next_assignment(unit,
+                               filename,
+                               line,
+                               lookup,
+                               table,
+                               *section,
+                               *section_line,
+                               strstrip(l),
+                               strstrip(e),
+                               relaxed,
+                               userdata);
 }
 
 /* Go through the file and parse each line */
-int config_parse(
-                const char *filename,
-                FILE *f,
-                const char *sections,
-                ConfigItemLookup lookup,
-                void *table,
-                bool relaxed,
-                void *userdata) {
-
-        unsigned line = 0;
-        char *section = NULL;
+int config_parse(const char *unit,
+                 const char *filename,
+                 FILE *f,
+                 const char *sections,
+                 ConfigItemLookup lookup,
+                 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;
-        bool ours = false;
-        char *continuation = NULL;
 
         assert(filename);
         assert(lookup);
 
         if (!f) {
-                f = fopen(filename, "re");
+                f = ours = fopen(filename, "re");
                 if (!f) {
-                        r = -errno;
-                        log_error("Failed to open configuration file '%s': %s", filename, strerror(-r));
-                        goto finish;
+                        /* 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;
                 }
-
-                ours = true;
         }
 
+        fd_warn_permissions(filename, fileno(f));
+
         while (!feof(f)) {
                 char l[LINE_MAX], *p, *c = NULL, *e;
                 bool escaped = false;
@@ -289,9 +367,8 @@ int config_parse(
                         if (feof(f))
                                 break;
 
-                        r = -errno;
-                        log_error("Failed to read configuration file '%s': %s", filename, strerror(-r));
-                        goto finish;
+                        log_error_errno(errno, "Failed to read configuration file '%s': %m", filename);
+                        return -errno;
                 }
 
                 truncate_nl(l);
@@ -299,8 +376,9 @@ int config_parse(
                 if (continuation) {
                         c = strappend(continuation, l);
                         if (!c) {
-                                r = -ENOMEM;
-                                goto finish;
+                                if (warn)
+                                        log_oom();
+                                return -ENOMEM;
                         }
 
                         free(continuation);
@@ -324,130 +402,122 @@ int config_parse(
                         else {
                                 continuation = strdup(l);
                                 if (!continuation) {
-                                        r = -ENOMEM;
-                                        goto finish;
+                                        if (warn)
+                                                log_oom();
+                                        return -ENOMEM;
                                 }
                         }
 
                         continue;
                 }
 
-                r = parse_line(filename,
-                                ++line,
-                                sections,
-                                lookup,
-                                table,
-                                relaxed,
-                                &section,
-                                p,
-                                userdata);
+                r = parse_line(unit,
+                               filename,
+                               ++line,
+                               sections,
+                               lookup,
+                               table,
+                               relaxed,
+                               allow_include,
+                               &section,
+                               &section_line,
+                               &section_ignored,
+                               p,
+                               userdata);
                 free(c);
 
-                if (r < 0)
-                        goto finish;
+                if (r < 0) {
+                        if (warn)
+                                log_warning_errno(r, "Failed to parse file '%s': %m",
+                                                  filename);
+                        return r;
+                }
         }
 
-        r = 0;
-
-finish:
-        free(section);
-        free(continuation);
-
-        if (f && ours)
-                fclose(f);
-
-        return r;
+        return 0;
 }
 
-int config_parse_int(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        int *i = data;
+/* Parse each config file in the specified directories. */
+int config_parse_many(const char *conf_file,
+                      const char *conf_file_dirs,
+                      const char *sections,
+                      ConfigItemLookup lookup,
+                      const void *table,
+                      bool relaxed,
+                      void *userdata) {
+        _cleanup_strv_free_ char **files = NULL;
+        char **fn;
         int r;
 
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
+        r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
+        if (r < 0)
+                return r;
 
-        if ((r = safe_atoi(rvalue, i)) < 0) {
-                log_error("[%s:%u] Failed to parse numeric value, ingoring: %s", filename, line, rvalue);
-                return 0;
+        if (conf_file) {
+                r = config_parse(NULL, conf_file, NULL, sections, lookup, table, relaxed, false, true, userdata);
+                if (r < 0)
+                        return r;
         }
 
-        return 0;
-}
-
-int config_parse_long(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        long *i = data;
-        int r;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
-
-        if ((r = safe_atoli(rvalue, i)) < 0) {
-                log_error("[%s:%u] Failed to parse numeric value, ignoring: %s", filename, line, rvalue);
-                return 0;
+        STRV_FOREACH(fn, files) {
+                r = config_parse(NULL, *fn, NULL, sections, lookup, table, relaxed, false, true, userdata);
+                if (r < 0)
+                        return r;
         }
 
         return 0;
 }
 
-int config_parse_uint64(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        uint64_t *u = data;
-        int r;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
-
-        if ((r = safe_atou64(rvalue, u)) < 0) {
-                log_error("[%s:%u] Failed to parse numeric value, ignoring: %s", filename, line, rvalue);
-                return 0;
+#define DEFINE_PARSER(type, vartype, conv_func)                         \
+        int config_parse_##type(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) {                       \
+                                                                        \
+                vartype *i = data;                                      \
+                int r;                                                  \
+                                                                        \
+                assert(filename);                                       \
+                assert(lvalue);                                         \
+                assert(rvalue);                                         \
+                assert(data);                                           \
+                                                                        \
+                r = conv_func(rvalue, i);                               \
+                if (r < 0)                                              \
+                        log_syntax(unit, LOG_ERR, filename, line, -r,   \
+                                   "Failed to parse %s value, ignoring: %s", \
+                                   #vartype, rvalue);                   \
+                                                                        \
+                return 0;                                               \
         }
 
-        return 0;
-}
+DEFINE_PARSER(int, int, safe_atoi)
+DEFINE_PARSER(long, long, safe_atoli)
+DEFINE_PARSER(uint64, uint64_t, safe_atou64)
+DEFINE_PARSER(unsigned, unsigned, safe_atou)
+DEFINE_PARSER(double, double, safe_atod)
+DEFINE_PARSER(nsec, nsec_t, parse_nsec)
+DEFINE_PARSER(sec, usec_t, parse_sec)
+
+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_unsigned(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        unsigned *u = data;
+        size_t *sz = data;
+        off_t o;
         int r;
 
         assert(filename);
@@ -455,34 +525,39 @@ int config_parse_unsigned(
         assert(rvalue);
         assert(data);
 
-        if ((r = safe_atou(rvalue, u)) < 0) {
-                log_error("[%s:%u] Failed to parse numeric value: %s", filename, line, rvalue);
-                return r;
+        r = parse_size(rvalue, 1024, &o);
+        if (r < 0 || (off_t) (size_t) o != o) {
+                log_syntax(unit, LOG_ERR, filename, line, r < 0 ? -r : ERANGE, "Failed to parse size value, ignoring: %s", rvalue);
+                return 0;
         }
 
+        *sz = (size_t) o;
         return 0;
 }
 
-int config_parse_bytes_size(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                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) {
 
         size_t *sz = data;
         off_t o;
+        int r;
 
         assert(filename);
         assert(lvalue);
         assert(rvalue);
         assert(data);
 
-        if (parse_bytes(rvalue, &o) < 0 || (off_t) (size_t) o != o) {
-                log_error("[%s:%u] Failed to parse byte value, ignoring: %s", filename, line, rvalue);
+        r = parse_size(rvalue, 1000, &o);
+        if (r < 0 || (off_t) (size_t) o != o) {
+                log_syntax(unit, LOG_ERR, filename, line, r < 0 ? -r : ERANGE, "Failed to parse size value, ignoring: %s", rvalue);
                 return 0;
         }
 
@@ -490,18 +565,19 @@ int config_parse_bytes_size(
         return 0;
 }
 
-
-int config_parse_bytes_off(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
+int config_parse_iec_off(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) {
 
         off_t *bytes = data;
+        int r;
 
         assert(filename);
         assert(lvalue);
@@ -510,23 +586,23 @@ int config_parse_bytes_off(
 
         assert_cc(sizeof(off_t) == sizeof(uint64_t));
 
-        if (parse_bytes(rvalue, bytes) < 0) {
-                log_error("[%s:%u] Failed to parse bytes value, ignoring: %s", filename, line, rvalue);
-                return 0;
-        }
+        r = parse_size(rvalue, 1024, bytes);
+        if (r < 0)
+                log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse size value, ignoring: %s", rvalue);
 
         return 0;
 }
 
-int config_parse_bool(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                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 k;
         bool *b = data;
@@ -536,38 +612,10 @@ int config_parse_bool(
         assert(rvalue);
         assert(data);
 
-        if ((k = parse_boolean(rvalue)) < 0) {
-                log_error("[%s:%u] Failed to parse boolean value, ignoring: %s", filename, line, rvalue);
-                return 0;
-        }
-
-        *b = !!k;
-        return 0;
-}
-
-int config_parse_tristate(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        int k;
-        int *b = data;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
-
-        /* Tristates are like booleans, but can also take the 'default' value, i.e. "-1" */
-
         k = parse_boolean(rvalue);
         if (k < 0) {
-                log_error("[%s:%u] Failed to parse boolean value, ignoring: %s", filename, line, rvalue);
+                log_syntax(unit, LOG_ERR, filename, line, -k,
+                           "Failed to parse boolean value, ignoring: %s", rvalue);
                 return 0;
         }
 
@@ -576,56 +624,56 @@ int config_parse_tristate(
 }
 
 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) {
 
-        char **s = data;
-        char *n;
+        char **s = data, *n;
 
         assert(filename);
         assert(lvalue);
         assert(rvalue);
         assert(data);
 
-        n = cunescape(rvalue);
-        if (!n)
-                return -ENOMEM;
-
-        if (!utf8_is_valid(n)) {
-                log_error("[%s:%u] String is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
-                free(n);
+        if (!utf8_is_valid(rvalue)) {
+                log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
                 return 0;
         }
 
-        free(*s);
-        if (*n)
-                *s = n;
+        if (isempty(rvalue))
+                n = NULL;
         else {
-                free(n);
-                *s = NULL;
+                n = strdup(rvalue);
+                if (!n)
+                        return log_oom();
         }
 
+        free(*s);
+        *s = n;
+
         return 0;
 }
 
 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) {
 
-        char **s = data;
-        char *n;
+        char **s = data, *n;
 
         assert(filename);
         assert(lvalue);
@@ -633,18 +681,18 @@ int config_parse_path(
         assert(data);
 
         if (!utf8_is_valid(rvalue)) {
-                log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
+                log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
                 return 0;
         }
 
         if (!path_is_absolute(rvalue)) {
-                log_error("[%s:%u] Not an absolute path, ignoring: %s", filename, line, rvalue);
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Not an absolute path, ignoring: %s", rvalue);
                 return 0;
         }
 
         n = strdup(rvalue);
         if (!n)
-                return -ENOMEM;
+                return log_oom();
 
         path_kill_slashes(n);
 
@@ -654,22 +702,20 @@ int config_parse_path(
         return 0;
 }
 
-int config_parse_strv(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        char*** sv = data;
-        char **n;
-        char *w;
-        unsigned k;
+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) {
+
+        char ***sv = data;
+        const char *word, *state;
         size_t l;
-        char *state;
         int r;
 
         assert(filename);
@@ -677,182 +723,56 @@ int config_parse_strv(
         assert(rvalue);
         assert(data);
 
-        k = strv_length(*sv);
-        FOREACH_WORD_QUOTED(w, l, rvalue, state)
-                k++;
-
-        n = new(char*, k+1);
-        if (!n)
-                return -ENOMEM;
-
-        if (*sv)
-                for (k = 0; (*sv)[k]; k++)
-                        n[k] = (*sv)[k];
-        else
-                k = 0;
-
-        FOREACH_WORD_QUOTED(w, l, rvalue, state) {
-                n[k] = cunescape_length(w, l);
-                if (!n[k]) {
-                        r = -ENOMEM;
-                        goto fail;
-                }
+        if (isempty(rvalue)) {
+                char **empty;
 
-                if (!utf8_is_valid(n[k])) {
-                        log_error("[%s:%u] String is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
-                        free(n[k]);
-                        continue;
-                }
+                /* Empty assignment resets the list. As a special rule
+                 * we actually fill in a real empty array here rather
+                 * than NULL, since some code wants to know if
+                 * something was set at all... */
+                empty = strv_new(NULL, NULL);
+                if (!empty)
+                        return log_oom();
 
-                k++;
+                strv_free(*sv);
+                *sv = empty;
+                return 0;
         }
 
-        n[k] = NULL;
-        free(*sv);
-        *sv = n;
-
-        return 0;
-
-fail:
-        for (; k > 0; k--)
-                free(n[k-1]);
-        free(n);
-
-        return r;
-}
-
-int config_parse_path_strv(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        char*** sv = data;
-        char **n;
-        char *w;
-        unsigned k;
-        size_t l;
-        char *state;
-        int r;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
-
-        k = strv_length(*sv);
-        FOREACH_WORD_QUOTED(w, l, rvalue, state)
-                k++;
-
-        n = new(char*, k+1);
-        if (!n)
-                return -ENOMEM;
-
-        k = 0;
-        if (*sv)
-                for (; (*sv)[k]; k++)
-                        n[k] = (*sv)[k];
-
-        FOREACH_WORD_QUOTED(w, l, rvalue, state) {
-                n[k] = strndup(w, l);
-                if (!n[k]) {
-                        r = -ENOMEM;
-                        goto fail;
-                }
+        FOREACH_WORD_QUOTED(word, l, rvalue, state) {
+                char *n;
 
-                if (!utf8_is_valid(n[k])) {
-                        log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
-                        free(n[k]);
-                        continue;
-                }
+                n = strndup(word, l);
+                if (!n)
+                        return log_oom();
 
-                if (!path_is_absolute(n[k])) {
-                        log_error("[%s:%u] Not an absolute path, ignoring: %s", filename, line, rvalue);
-                        free(n[k]);
+                if (!utf8_is_valid(n)) {
+                        log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
+                        free(n);
                         continue;
                 }
 
-                path_kill_slashes(n[k]);
-                k++;
-        }
-
-        n[k] = NULL;
-        free(*sv);
-        *sv = n;
-
-        return 0;
-
-fail:
-        for (; k > 0; k--)
-                free(n[k-1]);
-        free(n);
-
-        return r;
-}
-
-int config_parse_usec(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        usec_t *usec = data;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
-
-        if (parse_usec(rvalue, usec) < 0) {
-                log_error("[%s:%u] Failed to parse time value, ignoring: %s", filename, line, rvalue);
-                return 0;
+                r = strv_consume(sv, n);
+                if (r < 0)
+                        return log_oom();
         }
+        if (!isempty(state))
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Trailing garbage, ignoring.");
 
         return 0;
 }
 
-int config_parse_nsec(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        nsec_t *nsec = data;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
-
-        if (parse_nsec(rvalue, nsec) < 0) {
-                log_error("[%s:%u] Failed to parse time value, ignoring: %s", filename, line, rvalue);
-                return 0;
-        }
-
-        return 0;
-}
-
-int config_parse_mode(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                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) {
 
         mode_t *m = data;
         long l;
@@ -865,13 +785,15 @@ int config_parse_mode(
 
         errno = 0;
         l = strtol(rvalue, &x, 8);
-        if (!x || *x || errno) {
-                log_error("[%s:%u] Failed to parse mode value, ignoring: %s", filename, line, rvalue);
+        if (!x || x == rvalue || *x || errno) {
+                log_syntax(unit, LOG_ERR, filename, line, errno,
+                           "Failed to parse mode value, ignoring: %s", rvalue);
                 return 0;
         }
 
         if (l < 0000 || l > 07777) {
-                log_error("[%s:%u] mode value out of range, ignoring: %s", filename, line, rvalue);
+                log_syntax(unit, LOG_ERR, filename, line, ERANGE,
+                           "Mode value out of range, ignoring: %s", rvalue);
                 return 0;
         }
 
@@ -879,10 +801,12 @@ int config_parse_mode(
         return 0;
 }
 
-int config_parse_facility(
+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,
@@ -899,7 +823,7 @@ int config_parse_facility(
 
         x = log_facility_unshifted_from_string(rvalue);
         if (x < 0) {
-                log_error("[%s:%u] Failed to parse log facility, ignoring: %s", filename, line, rvalue);
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse log facility, ignoring: %s", rvalue);
                 return 0;
         }
 
@@ -908,10 +832,12 @@ int config_parse_facility(
         return 0;
 }
 
-int config_parse_level(
+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,
@@ -928,78 +854,10 @@ int config_parse_level(
 
         x = log_level_from_string(rvalue);
         if (x < 0) {
-                log_error("[%s:%u] Failed to parse log level, ignoring: %s", filename, line, rvalue);
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse log level, ignoring: %s", rvalue);
                 return 0;
         }
 
         *o = (*o & LOG_FACMASK) | x;
         return 0;
 }
-
-int config_parse_set_status(
-                const char *filename,
-                unsigned line,
-                const char *section,
-                const char *lvalue,
-                int ltype,
-                const char *rvalue,
-                void *data,
-                void *userdata) {
-
-        char *w;
-        size_t l;
-        char *state;
-        int r;
-        ExitStatusSet *status_set = data;
-
-        assert(filename);
-        assert(lvalue);
-        assert(rvalue);
-        assert(data);
-
-        FOREACH_WORD(w, l, rvalue, state) {
-                int val;
-                char *temp = strndup(w, l);
-                if (!temp)
-                        return log_oom();
-
-                r = safe_atoi(temp, &val);
-                if (r < 0) {
-                        val = signal_from_string_try_harder(temp);
-                        free(temp);
-                        if (val > 0) {
-                                if (!status_set->signal) {
-                                        status_set->signal = set_new(trivial_hash_func, trivial_compare_func);
-                                        if (!status_set->signal)
-                                                return log_oom();
-                                }
-                                r = set_put(status_set->signal, INT_TO_PTR(val));
-                                if (r < 0) {
-                                        log_error("[%s:%u] Unable to store: %s", filename, line, w);
-                                        return r;
-                                }
-                        } else {
-                                log_error("[%s:%u] Failed to parse value: %s", filename, line, w);
-                                return r;
-                        }
-                } else {
-                        free(temp);
-                        if(val < 0 || val > 255)
-                                log_warning("[%s:%u] Value %d is outside range 0-255, ignoring", filename, line, val);
-                        else {
-                                if (!status_set->code) {
-                                        status_set->code = set_new(trivial_hash_func, trivial_compare_func);
-                                        if (!status_set->code)
-                                                return log_oom();
-                                }
-                                r = set_put(status_set->code, INT_TO_PTR(val));
-                                if (r < 0) {
-                                        log_error("[%s:%u] Unable to store: %s", filename, line, w);
-                                        return r;
-                                }
-                        }
-                }
-
-        }
-        return 0;
-}