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author | Jan Kara <jack@suse.cz> | 2017-08-17 19:20:28 +0200 |
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committer | Jan Kara <jack@suse.cz> | 2017-08-17 19:20:28 +0200 |
commit | f98bbe37ae96873ce93f36f4cdc7b47d85cc4455 (patch) | |
tree | 129500e998d7b2dc7e847005b91dac865b6be580 /fs/quota | |
parent | quota: Fix error codes in v2_read_file_info() (diff) | |
download | linux-f98bbe37ae96873ce93f36f4cdc7b47d85cc4455.tar.xz linux-f98bbe37ae96873ce93f36f4cdc7b47d85cc4455.zip |
quota: Propagate ->quota_read errors from v2_read_file_info()
Currently we return -EIO on any error (or short read) from
->quota_read() while reading quota info. Propagate the error code
instead.
Suggested-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
-rw-r--r-- | fs/quota/quota_v2.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c index 21a8bdf7cfec..cdbf71664cdc 100644 --- a/fs/quota/quota_v2.c +++ b/fs/quota/quota_v2.c @@ -65,9 +65,11 @@ static int v2_read_header(struct super_block *sb, int type, if (size != sizeof(struct v2_disk_dqheader)) { quota_error(sb, "Failed header read: expected=%zd got=%zd", sizeof(struct v2_disk_dqheader), size); - return 0; + if (size < 0) + return size; + return -EIO; } - return 1; + return 0; } /* Check whether given file is really vfsv0 quotafile */ @@ -77,7 +79,7 @@ static int v2_check_quota_file(struct super_block *sb, int type) static const uint quota_magics[] = V2_INITQMAGICS; static const uint quota_versions[] = V2_INITQVERSIONS; - if (!v2_read_header(sb, type, &dqhead)) + if (v2_read_header(sb, type, &dqhead)) return 0; if (le32_to_cpu(dqhead.dqh_magic) != quota_magics[type] || le32_to_cpu(dqhead.dqh_version) > quota_versions[type]) @@ -98,10 +100,9 @@ static int v2_read_file_info(struct super_block *sb, int type) int ret; down_read(&dqopt->dqio_sem); - if (!v2_read_header(sb, type, &dqhead)) { - ret = -EIO; + ret = v2_read_header(sb, type, &dqhead); + if (ret < 0) goto out; - } version = le32_to_cpu(dqhead.dqh_version); if ((info->dqi_fmt_id == QFMT_VFS_V0 && version != 0) || (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1)) { @@ -113,7 +114,10 @@ static int v2_read_file_info(struct super_block *sb, int type) sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); if (size != sizeof(struct v2_disk_dqinfo)) { quota_error(sb, "Can't read info structure"); - ret = -EIO; + if (size < 0) + ret = size; + else + ret = -EIO; goto out; } info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS); |