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Commit 57f73c2c authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

ext4: fix handling of journalled quota options 



Commit 26092bf5 broke handling of journalled quota mount options by
trying to parse argument of every mount option as a number.  Fix this
by dealing with the quota options before we call match_int().

Thanks to Jan Kara for discovering this regression.

Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
parent 9cd70b34

fs/ext4/super.c

+15 −17
Original line number Diff line number Diff line
@@ -1305,20 +1305,20 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args) 
		ext4_msg(sb, KERN_ERR,

			"Cannot change journaled "

			"quota options when quota turned on");

		return 0;

		return -1;

	}

	qname = match_strdup(args);

	if (!qname) {

		ext4_msg(sb, KERN_ERR,

			"Not enough memory for storing quotafile name");

		return 0;

		return -1;

	}

	if (sbi->s_qf_names[qtype] &&

		strcmp(sbi->s_qf_names[qtype], qname)) {

		ext4_msg(sb, KERN_ERR,

			"%s quota file already specified", QTYPE2NAME(qtype));

		kfree(qname);

		return 0;

		return -1;

	}

	sbi->s_qf_names[qtype] = qname;

	if (strchr(sbi->s_qf_names[qtype], '/')) {
@@ -1326,7 +1326,7 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args) 
			"quotafile must be on filesystem root");

		kfree(sbi->s_qf_names[qtype]);

		sbi->s_qf_names[qtype] = NULL;

		return 0;

		return -1;

	}

	set_opt(sb, QUOTA);

	return 1;
@@ -1341,7 +1341,7 @@ static int clear_qf_name(struct super_block *sb, int qtype) 
		sbi->s_qf_names[qtype]) {

		ext4_msg(sb, KERN_ERR, "Cannot change journaled quota options"

			" when quota turned on");

		return 0;

		return -1;

	}

	/*

	 * The space will be released later when all options are confirmed
@@ -1450,6 +1450,16 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token, 
	const struct mount_opts *m;

	int arg = 0;



#ifdef CONFIG_QUOTA

	if (token == Opt_usrjquota)

		return set_qf_name(sb, USRQUOTA, &args[0]);

	else if (token == Opt_grpjquota)

		return set_qf_name(sb, GRPQUOTA, &args[0]);

	else if (token == Opt_offusrjquota)

		return clear_qf_name(sb, USRQUOTA);

	else if (token == Opt_offgrpjquota)

		return clear_qf_name(sb, GRPQUOTA);

#endif

	if (args->from && match_int(args, &arg))

		return -1;

	switch (token) {
@@ -1549,18 +1559,6 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token, 
				sbi->s_mount_opt |= m->mount_opt;

			}

#ifdef CONFIG_QUOTA

		} else if (token == Opt_usrjquota) {

			if (!set_qf_name(sb, USRQUOTA, &args[0]))

				return -1;

		} else if (token == Opt_grpjquota) {

			if (!set_qf_name(sb, GRPQUOTA, &args[0]))

				return -1;

		} else if (token == Opt_offusrjquota) {

			if (!clear_qf_name(sb, USRQUOTA))

				return -1;

		} else if (token == Opt_offgrpjquota) {

			if (!clear_qf_name(sb, GRPQUOTA))

				return -1;

		} else if (m->flags & MOPT_QFMT) {

			if (sb_any_quota_loaded(sb) &&

			    sbi->s_jquota_fmt != m->mount_opt) {