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quota: do not allow setting of quota limits to too high values

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We should check whether quota limits set via Q_SETQUOTA are not exceeding
limits which quota format is able to handle.

Signed-off-by: Andrew Perepechko <andrew.perepechko@sun.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Perepechko
2008-04-28 02:14:31 -07:00
committed by Linus Torvalds
parent 3b0cb4caef
commit 338bf9afda
4 changed files with 25 additions and 5 deletions
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3
fs/quota_v2.c
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@ -59,6 +59,9 @@ static int v2_read_file_info(struct super_block *sb, int type)
sb->s_id);
return -1;
}
/* limits are stored as unsigned 32-bit data */
info->dqi_maxblimit = 0xffffffff;
info->dqi_maxilimit = 0xffffffff;
info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace);
info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace);
info->dqi_flags = le32_to_cpu(dinfo.dqi_flags);