X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshared%2Fconf-parser.c;h=0b1af6c577f6d65ca0a918a9f3b46a81247cb4c3;hp=6085d33391baeb2d4f51e3e017813eabbef57575;hb=769d324c99aab129148bd25f5f663ef441287d86;hpb=ea92ae33e0fbbf8a98cd2e08ca5a850d83d57fae diff --git a/src/shared/conf-parser.c b/src/shared/conf-parser.c index 6085d3339..0b1af6c57 100644 --- a/src/shared/conf-parser.c +++ b/src/shared/conf-parser.c @@ -24,8 +24,10 @@ #include #include #include +#include #include "conf-parser.h" +#include "conf-files.h" #include "util.h" #include "macro.h" #include "strv.h" @@ -36,10 +38,16 @@ #include "exit-status.h" #include "sd-messages.h" -int log_syntax_internal(const char *unit, int level, - const char *file, unsigned line, const char *func, - const char *config_file, unsigned config_line, - int error, const char *format, ...) { +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; @@ -53,29 +61,29 @@ int log_syntax_internal(const char *unit, int level, if (unit) r = log_struct_internal(level, + error, file, line, func, getpid() == 1 ? "UNIT=%s" : "USER_UNIT=%s", unit, - MESSAGE_ID(SD_MESSAGE_CONFIG_ERROR), + LOG_MESSAGE_ID(SD_MESSAGE_CONFIG_ERROR), "CONFIG_FILE=%s", config_file, "CONFIG_LINE=%u", config_line, - "ERRNO=%d", error > 0 ? error : EINVAL, - "MESSAGE=[%s:%u] %s", config_file, config_line, msg, + LOG_MESSAGE("[%s:%u] %s", config_file, config_line, msg), NULL); else r = log_struct_internal(level, + error, file, line, func, - MESSAGE_ID(SD_MESSAGE_CONFIG_ERROR), + LOG_MESSAGE_ID(SD_MESSAGE_CONFIG_ERROR), "CONFIG_FILE=%s", config_file, "CONFIG_LINE=%u", config_line, - "ERRNO=%d", error > 0 ? error : EINVAL, - "MESSAGE=[%s:%u] %s", config_file, config_line, msg, + 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, @@ -83,7 +91,7 @@ int config_item_table_lookup( void **data, void *userdata) { - ConfigTableItem *t; + const ConfigTableItem *t; assert(table); assert(lvalue); @@ -109,7 +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, @@ -153,8 +161,9 @@ 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, const char *rvalue, bool relaxed, @@ -177,8 +186,8 @@ static int next_assignment(const char *unit, if (r > 0) { if (func) - return func(unit, filename, line, section, lvalue, ltype, - rvalue, data, userdata); + return func(unit, filename, line, section, section_line, + lvalue, ltype, rvalue, data, userdata); return 0; } @@ -197,10 +206,12 @@ 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) { @@ -222,6 +233,15 @@ static int parse_line(const char* unit, if (startswith(l, ".include ")) { _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."); @@ -232,7 +252,7 @@ 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 == '[') { @@ -254,15 +274,20 @@ 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); 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; @@ -270,7 +295,7 @@ 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."); @@ -292,6 +317,7 @@ static int parse_line(const char* unit, lookup, table, *section, + *section_line, strstrip(l), strstrip(e), relaxed, @@ -304,14 +330,16 @@ 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; + unsigned line = 0, section_line = 0; + bool section_ignored = false; int r; assert(filename); @@ -320,11 +348,17 @@ 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; } } + fd_warn_permissions(filename, fileno(f)); + while (!feof(f)) { char l[LINE_MAX], *p, *c = NULL, *e; bool escaped = false; @@ -333,7 +367,7 @@ int config_parse(const char *unit, if (feof(f)) break; - log_error("Failed to read configuration file '%s': %m", filename); + log_error_errno(errno, "Failed to read configuration file '%s': %m", filename); return -errno; } @@ -341,8 +375,11 @@ 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; @@ -364,8 +401,11 @@ int config_parse(const char *unit, continuation = c; else { continuation = strdup(l); - if (!continuation) + if (!continuation) { + if (warn) + log_oom(); return -ENOMEM; + } } continue; @@ -380,10 +420,47 @@ int config_parse(const char *unit, relaxed, allow_include, §ion, + §ion_line, + §ion_ignored, p, userdata); free(c); + if (r < 0) { + if (warn) + log_warning_errno(r, "Failed to parse file '%s': %m", + filename); + return r; + } + } + + return 0; +} + +/* 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; + + r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs); + if (r < 0) + return r; + + if (conf_file) { + r = config_parse(NULL, conf_file, NULL, sections, lookup, table, relaxed, false, true, userdata); + if (r < 0) + return r; + } + + STRV_FOREACH(fn, files) { + r = config_parse(NULL, *fn, NULL, sections, lookup, table, relaxed, false, true, userdata); if (r < 0) return r; } @@ -396,6 +473,7 @@ int config_parse(const char *unit, const char *filename, \ unsigned line, \ const char *section, \ + unsigned section_line, \ const char *lvalue, \ int ltype, \ const char *rvalue, \ @@ -427,11 +505,11 @@ DEFINE_PARSER(double, double, safe_atod) DEFINE_PARSER(nsec, nsec_t, parse_nsec) DEFINE_PARSER(sec, usec_t, parse_sec) - -int config_parse_bytes_size(const char* unit, +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, @@ -447,10 +525,9 @@ int config_parse_bytes_size(const char* unit, assert(rvalue); assert(data); - r = parse_bytes(rvalue, &o); + r = parse_size(rvalue, 1024, &o); if (r < 0 || (off_t) (size_t) o != o) { - log_syntax(unit, LOG_ERR, filename, line, -r, - "Failed to parse byte value, ignoring: %s", rvalue); + log_syntax(unit, LOG_ERR, filename, line, r < 0 ? -r : ERANGE, "Failed to parse size value, ignoring: %s", rvalue); return 0; } @@ -458,11 +535,41 @@ int config_parse_bytes_size(const char* unit, return 0; } +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); -int config_parse_bytes_off(const char* unit, + 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; + } + + *sz = (size_t) o; + return 0; +} + +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, @@ -479,10 +586,9 @@ int config_parse_bytes_off(const char* unit, assert_cc(sizeof(off_t) == sizeof(uint64_t)); - r = parse_bytes(rvalue, bytes); + r = parse_size(rvalue, 1024, bytes); if (r < 0) - log_syntax(unit, LOG_ERR, filename, line, -r, - "Failed to parse bytes value, ignoring: %s", rvalue); + log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse size value, ignoring: %s", rvalue); return 0; } @@ -491,6 +597,7 @@ 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, @@ -516,90 +623,57 @@ int config_parse_bool(const char* unit, return 0; } -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) { +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 k; - int *b = data; + char **s = data, *n; 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_syntax(unit, LOG_ERR, filename, line, -k, - "Failed to parse boolean value, ignoring: %s", rvalue); + if (!utf8_is_valid(rvalue)) { + log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue); return 0; } - *b = !!k; - return 0; -} - -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) { - - char **s = data; - char *n; - - assert(filename); - assert(lvalue); - assert(rvalue); - assert(data); - - n = strdup(rvalue); - 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 assignment: %s", rvalue); - free(n); - return 0; + if (isempty(rvalue)) + n = NULL; + else { + n = strdup(rvalue); + if (!n) + return log_oom(); } free(*s); - if (*n) - *s = n; - else { - free(n); - *s = NULL; - } + *s = n; return 0; } -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) { +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; - int offset; + char **s = data, *n; assert(filename); assert(lvalue); @@ -607,16 +681,12 @@ int config_parse_path(const char *unit, 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; } - offset = rvalue[0] == '-' && (streq(lvalue, "InaccessibleDirectories") || - streq(lvalue, "ReadOnlyDirectories")); - if (!path_is_absolute(rvalue + offset)) { - log_syntax(unit, LOG_ERR, filename, line, EINVAL, - "Not an absolute path, ignoring: %s", rvalue); + if (!path_is_absolute(rvalue)) { + log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Not an absolute path, ignoring: %s", rvalue); return 0; } @@ -636,13 +706,15 @@ 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, *w, *state; + char ***sv = data; + const char *word, *state; size_t l; int r; @@ -667,80 +739,26 @@ int config_parse_strv(const char *unit, return 0; } - FOREACH_WORD_QUOTED(w, l, rvalue, state) { - _cleanup_free_ char *n; - - n = cunescape_length(w, 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); - continue; - } - - r = strv_extend(sv, n); - if (r < 0) - return log_oom(); - } - - return 0; -} - -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) { - - char*** sv = data, *w, *state; - size_t l; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - assert(data); - - if (isempty(rvalue)) { - /* Empty assignment resets the list */ - strv_free(*sv); - *sv = NULL; - return 0; - } - - FOREACH_WORD_QUOTED(w, l, rvalue, state) { - _cleanup_free_ char *n; - int offset; + FOREACH_WORD_QUOTED(word, l, rvalue, state) { + char *n; - n = strndup(w, l); + n = strndup(word, l); if (!n) return log_oom(); if (!utf8_is_valid(n)) { - log_syntax(unit, LOG_ERR, filename, line, EINVAL, - "Path is not UTF-8 clean, ignoring assignment: %s", rvalue); - continue; - } - - offset = n[0] == '-' && (streq(lvalue, "InaccessibleDirectories") || - streq(lvalue, "ReadOnlyDirectories")); - if (!path_is_absolute(n + offset)) { - log_syntax(unit, LOG_ERR, filename, line, EINVAL, - "Not an absolute path, ignoring: %s", rvalue); + log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue); + free(n); continue; } - path_kill_slashes(n); - r = strv_extend(sv, n); + 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; } @@ -749,6 +767,7 @@ 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, @@ -782,15 +801,17 @@ int config_parse_mode(const char *unit, return 0; } -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) { +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 *o = data, x; @@ -802,8 +823,7 @@ int config_parse_facility(const char *unit, x = log_facility_unshifted_from_string(rvalue); if (x < 0) { - log_syntax(unit, LOG_ERR, filename, line, EINVAL, - "Failed to parse log facility, ignoring: %s", rvalue); + log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse log facility, ignoring: %s", rvalue); return 0; } @@ -812,15 +832,17 @@ int config_parse_facility(const char *unit, return 0; } -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) { +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 *o = data, x; @@ -832,95 +854,10 @@ int config_parse_level(const char *unit, x = log_level_from_string(rvalue); if (x < 0) { - log_syntax(unit, LOG_ERR, filename, line, EINVAL, - "Failed to parse log level, ignoring: %s", 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 *unit, - 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); - - if (isempty(rvalue)) { - /* Empty assignment resets the list */ - - set_free(status_set->signal); - set_free(status_set->code); - - status_set->signal = status_set->code = NULL; - return 0; - } - - FOREACH_WORD(w, l, rvalue, state) { - int val; - char *temp; - - 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) { - r = set_ensure_allocated(&status_set->signal, trivial_hash_func, trivial_compare_func); - if (r < 0) - return log_oom(); - - r = set_put(status_set->signal, INT_TO_PTR(val)); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, -r, - "Unable to store: %s", w); - return r; - } - } else { - log_syntax(unit, LOG_ERR, filename, line, -val, - "Failed to parse value, ignoring: %s", w); - return 0; - } - } else { - free(temp); - - if (val < 0 || val > 255) - log_syntax(unit, LOG_ERR, filename, line, ERANGE, - "Value %d is outside range 0-255, ignoring", val); - else { - r = set_ensure_allocated(&status_set->code, trivial_hash_func, trivial_compare_func); - if (r < 0) - return log_oom(); - - r = set_put(status_set->code, INT_TO_PTR(val)); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, -r, - "Unable to store: %s", w); - return r; - } - } - } - } - - return 0; -}