From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Benjamin Marzinski Date: Mon, 4 Oct 2021 16:52:55 -0500 Subject: [PATCH] libmultipath: cleanup invalid config handling Add error reporting to the remaining config handlers. If the value is invalid, do not change the existing config option's value. Also print an error whenever 0 is returned for an invalid value. When the handler returns 1, config processing already fails with an error message. Signed-off-by: Benjamin Marzinski --- libmultipath/dict.c | 73 +++++++++++++++++++++++++++++++-------------- 1 file changed, 51 insertions(+), 22 deletions(-) diff --git a/libmultipath/dict.c b/libmultipath/dict.c index 68647061..c534d703 100644 --- a/libmultipath/dict.c +++ b/libmultipath/dict.c @@ -199,8 +199,11 @@ set_yes_no(vector strvec, void *ptr, const char *file, int line_nr) if (strcmp(buff, "yes") == 0 || strcmp(buff, "1") == 0) *int_ptr = YN_YES; - else + else if (strcmp(buff, "no") == 0 || strcmp(buff, "0") == 0) *int_ptr = YN_NO; + else + condlog(1, "%s line %d, invalid value for %s: \"%s\"", + file, line_nr, (char*)VECTOR_SLOT(strvec, 0), buff); FREE(buff); return 0; @@ -221,7 +224,8 @@ set_yes_no_undef(vector strvec, void *ptr, const char *file, int line_nr) else if (strcmp(buff, "yes") == 0 || strcmp(buff, "1") == 0) *int_ptr = YNU_YES; else - *int_ptr = YNU_UNDEF; + condlog(1, "%s line %d, invalid value for %s: \"%s\"", + file, line_nr, (char*)VECTOR_SLOT(strvec, 0), buff); FREE(buff); return 0; @@ -480,9 +484,6 @@ def_find_multipaths_handler(struct config *conf, vector strvec, char *buff; int i; - if (set_yes_no_undef(strvec, &conf->find_multipaths, file, line_nr) == 0 && conf->find_multipaths != FIND_MULTIPATHS_UNDEF) - return 0; - buff = set_value(strvec); if (!buff) return 1; @@ -495,9 +496,14 @@ def_find_multipaths_handler(struct config *conf, vector strvec, } } - if (conf->find_multipaths == YNU_UNDEF) { - condlog(0, "illegal value for find_multipaths: %s", buff); - conf->find_multipaths = DEFAULT_FIND_MULTIPATHS; + if (i >= __FIND_MULTIPATHS_LAST) { + if (strcmp(buff, "no") == 0 || strcmp(buff, "0") == 0) + conf->find_multipaths = FIND_MULTIPATHS_OFF; + else if (strcmp(buff, "yes") == 0 || strcmp(buff, "1") == 0) + conf->find_multipaths = FIND_MULTIPATHS_ON; + else + condlog(1, "%s line %d, invalid value for find_multipaths: \"%s\"", + file, line_nr, buff); } FREE(buff); @@ -546,8 +552,10 @@ static int uid_attrs_handler(struct config *conf, vector strvec, if (!val) return 1; if (parse_uid_attrs(val, conf)) - condlog(1, "error parsing uid_attrs: \"%s\"", val); - condlog(3, "parsed %d uid_attrs", VECTOR_SIZE(&conf->uid_attrs)); + condlog(1, "%s line %d,error parsing uid_attrs: \"%s\"", file, + line_nr, val); + else + condlog(4, "parsed %d uid_attrs", VECTOR_SIZE(&conf->uid_attrs)); FREE(val); return 0; } @@ -775,8 +783,11 @@ def_config_dir_handler(struct config *conf, vector strvec, const char *file, int line_nr) { /* this is only valid in the main config file */ - if (conf->processed_main_config) + if (conf->processed_main_config) { + condlog(1, "%s line %d, config_dir option only valid in /etc/multipath.conf", + file, line_nr); return 0; + } condlog(2, "%s line %d, \"config_dir\" is deprecated and will be disabled in a future release", file, line_nr); return set_path(strvec, &conf->config_dir, file, line_nr); @@ -836,7 +847,9 @@ set_mode(vector strvec, void *ptr, int *flags, const char *file, int line_nr) if (sscanf(buff, "%o", &mode) == 1 && mode <= 0777) { *flags |= (1 << ATTR_MODE); *mode_ptr = mode; - } + } else + condlog(1, "%s line %d, invalid value for mode: \"%s\"", + file, line_nr, buff); FREE(buff); return 0; @@ -861,7 +874,9 @@ set_uid(vector strvec, void *ptr, int *flags, const char *file, int line_nr) else if (sscanf(buff, "%u", &uid) == 1){ *flags |= (1 << ATTR_UID); *uid_ptr = uid; - } + } else + condlog(1, "%s line %d, invalid value for uid: \"%s\"", + file, line_nr, buff); FREE(buff); return 0; @@ -887,7 +902,9 @@ set_gid(vector strvec, void *ptr, int *flags, const char *file, int line_nr) else if (sscanf(buff, "%u", &gid) == 1){ *flags |= (1 << ATTR_GID); *gid_ptr = gid; - } + } else + condlog(1, "%s line %d, invalid value for gid: \"%s\"", + file, line_nr, buff); FREE(buff); return 0; } @@ -989,7 +1006,8 @@ set_dev_loss(vector strvec, void *ptr, const char *file, int line_nr) if (!strcmp(buff, "infinity")) *uint_ptr = MAX_DEV_LOSS_TMO; else if (sscanf(buff, "%u", uint_ptr) != 1) - *uint_ptr = DEV_LOSS_TMO_UNSET; + condlog(1, "%s line %d, invalid value for dev_loss_tmo: \"%s\"", + file, line_nr, buff); FREE(buff); return 0; @@ -1023,13 +1041,19 @@ static int set_pgpolicy(vector strvec, void *ptr, const char *file, int line_nr) { char * buff; + int policy; int *int_ptr = (int *)ptr; buff = set_value(strvec); if (!buff) return 1; - *int_ptr = get_pgpolicy_id(buff); + policy = get_pgpolicy_id(buff); + if (policy != IOPOLICY_UNDEF) + *int_ptr = policy; + else + condlog(1, "%s line %d, invalid value for path_grouping_policy: \"%s\"", + file, line_nr, buff); FREE(buff); return 0; @@ -1142,10 +1166,11 @@ set_rr_weight(vector strvec, void *ptr, const char *file, int line_nr) if (!strcmp(buff, "priorities")) *int_ptr = RR_WEIGHT_PRIO; - - if (!strcmp(buff, "uniform")) + else if (!strcmp(buff, "uniform")) *int_ptr = RR_WEIGHT_NONE; - + else + condlog(1, "%s line %d, invalid value for rr_weight: \"%s\"", + file, line_nr, buff); FREE(buff); return 0; @@ -1281,10 +1306,13 @@ def_log_checker_err_handler(struct config *conf, vector strvec, if (!buff) return 1; - if (strlen(buff) == 4 && !strcmp(buff, "once")) + if (!strcmp(buff, "once")) conf->log_checker_err = LOG_CHKR_ERR_ONCE; - else if (strlen(buff) == 6 && !strcmp(buff, "always")) + else if (!strcmp(buff, "always")) conf->log_checker_err = LOG_CHKR_ERR_ALWAYS; + else + condlog(1, "%s line %d, invalid value for log_checker_err: \"%s\"", + file, line_nr, buff); free(buff); return 0; @@ -1545,7 +1573,8 @@ hw_vpd_vendor_handler(struct config *conf, vector strvec, const char *file, goto out; } } - hwe->vpd_vendor_id = 0; + condlog(1, "%s line %d, invalid value for vpd_vendor: \"%s\"", + file, line_nr, buff); out: FREE(buff); return 0;