[PATCH 10/22] mkfs: change when to mark an option as seen

[Jan Tulak <jtulak@redhat.com>]

Make the check for seen option more useful for new conflict detection
by moving it's logic to new place - we are no longer doing the
respecification as before.

Signed-off-by: Jan Tulak <jtulak@redhat.com>
---
 mkfs/xfs_mkfs.c | 40 +++++++++++-----------------------------
 1 file changed, 11 insertions(+), 29 deletions(-)

diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
index d11fad6..b3625ed 100644
--- a/mkfs/xfs_mkfs.c
+++ b/mkfs/xfs_mkfs.c
@@ -152,10 +152,6 @@ unsigned int		sectorsize;
  *     Do not set this flag when definning a subopt. It is used to remeber that
  *     this subopt was already seen, for example for conflicts detection.
  *
- *   str_seen INTERNAL
- *     Do not set. It is used internally for respecification, when some options
- *     has to be parsed twice - at first as a string, then later as a number.
- *
  *   convert OPTIONAL
  *     A flag signalling whether the user-given value can use suffixes.
  *     If you want to allow the use of user-friendly values like 13k, 42G,
@@ -212,7 +208,6 @@ struct opt_params {
 	struct subopt_param {
 		int		index;
 		bool		seen;
-		bool		str_seen;
 		bool		convert;
 		bool		is_power_2;
 		struct subopt_conflict {
@@ -1375,7 +1370,7 @@ static void
 check_subopt_conflicts(
 	struct opt_params	*opt,
 	int			index,
-	bool			str_seen)
+	bool			seen)
 {
 	struct subopt_param	*sp = &opt->subopt_params[index];
 	int			i;
@@ -1387,23 +1382,6 @@ check_subopt_conflicts(
 		reqval(opt->name, (char **)opt->subopts, index);
 	}
 
-	/*
-	 * Check for respecification of the option. This is more complex than it
-	 * seems because some options are parsed twice - once as a string during
-	 * input parsing, then later the string is passed to getnum for
-	 * conversion into a number and bounds checking. Hence the two variables
-	 * used to track the different uses based on the @str parameter passed
-	 * to us.
-	 */
-	if (!str_seen) {
-		if (sp->seen)
-			respec(opt->name, (char **)opt->subopts, index);
-		sp->seen = true;
-	} else {
-		if (sp->str_seen)
-			respec(opt->name, (char **)opt->subopts, index);
-		sp->str_seen = true;
-	}
 
 	/* check for conflicts with the option */
 	for (i = 0; i < MAX_CONFLICTS; i++) {
@@ -1413,8 +1391,7 @@ check_subopt_conflicts(
 			break;
 		if (conflict_opt.test_values)
 			break;
-		if (opts[conflict_opt.opt].subopt_params[conflict_opt.subopt].seen ||
-		    opts[conflict_opt.opt].subopt_params[conflict_opt.subopt].str_seen) {
+		if (opts[conflict_opt.opt].subopt_params[conflict_opt.subopt].seen) {
 			conflict_struct(opt, sp, &conflict_opt);
 		}
 	}
@@ -1440,8 +1417,7 @@ check_subopt_value(
 			break;
 		if (!conflict_opt.test_values)
 			break;
-		if ((opts[conflict_opt.opt].subopt_params[conflict_opt.subopt].seen ||
-		     opts[conflict_opt.opt].subopt_params[conflict_opt.subopt].str_seen) &&
+		if (opts[conflict_opt.opt].subopt_params[conflict_opt.subopt].seen &&
 		    opts[conflict_opt.opt].subopt_params[conflict_opt.subopt].value
 				== conflict_opt.invalid_value &&
 		    value == conflict_opt.at_value) {
@@ -1462,7 +1438,11 @@ check_opt(
 	int index;
 	struct opt_params *opt = &opts[opti];
 	for (index = 0; index < MAX_SUBOPTS; index++) {
+		if (opt->subopts[index] == NULL)
+			break;
 		struct subopt_param *sp = &opt->subopt_params[index];
+		if (!sp->seen)
+			continue;
 		check_subopt_conflicts(opt, index, false);
 		check_subopt_value(opt, index, sp->value);
 	}
@@ -1489,9 +1469,12 @@ getnum(
 	if (!str || *str == '\0') {
 		if (sp->defaultval == SUBOPT_NEEDS_VAL)
 			reqval(opts->name, (char **)opts->subopts, index);
+		sp->seen = true;
 		return sp->defaultval;
 	}
 
+	sp->seen = true;
+
 	if (sp->minval == 0 && sp->maxval == 0) {
 		fprintf(stderr,
 			_("Option -%c %s has undefined minval/maxval."
@@ -1540,11 +1523,10 @@ getstr(
 	struct opt_params	*opts,
 	int			index)
 {
-	check_subopt(opts, index, true);
-
 	/* empty strings for string options are not valid */
 	if (!str || *str == '\0')
 		reqval(opts->name, (char **)opts->subopts, index);
+	opts->subopt_params[index].seen = true;
 	return str;
 }
 
-- 
2.8.1