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| author |   Martin Brandenburg <martin@omnibond.com> | 2016-08-12 16:12:09 -0400 |
|---|---|---|
| committer | Martin Brandenburg <martin@omnibond.com> | 2016-08-12 16:12:09 -0400 |
| commit | c51e012942a7594f59db5611db14fa4a29624a10 (patch) | |
| tree | 04387368dd9e27b999c14c8e292235ac40b106a4 /fs/orangefs/orangefs-sysfs.c | |
| parent | orangefs: add features op (diff) | |
| download | linux-dev-c51e012942a7594f59db5611db14fa4a29624a10.tar.xz linux-dev-c51e012942a7594f59db5611db14fa4a29624a10.zip | |
orangefs: do not allow client readahead cache without feature bit
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/orangefs/orangefs-sysfs.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/orangefs/orangefs-sysfs.c b/fs/orangefs/orangefs-sysfs.c index 2fe9a3a2117b..ed5ee33d0f7e 100644 --- a/fs/orangefs/orangefs-sysfs.c +++ b/fs/orangefs/orangefs-sysfs.c @@ -842,6 +842,16 @@ static int sysfs_service_op_show(char *kobj_id, char *buf, void *attr) if (!strcmp(kobj_id, ORANGEFS_KOBJ_ID)) { orangefs_attr = (struct orangefs_attribute *)attr; + /* Drop unsupported requests first. */ + if (!(orangefs_features & ORANGEFS_FEATURE_READAHEAD) && + (!strcmp(orangefs_attr->attr.name, "readahead_count") || + !strcmp(orangefs_attr->attr.name, "readahead_size") || + !strcmp(orangefs_attr->attr.name, + "readahead_count_size"))) { + rc = -EINVAL; + goto out; + } + if (!strcmp(orangefs_attr->attr.name, "perf_history_size")) new_op->upcall.req.param.op = ORANGEFS_PARAM_REQUEST_OP_PERF_HISTORY_SIZE; @@ -1133,6 +1143,15 @@ static int sysfs_service_op_store(char *kobj_id, const char *buf, void *attr) if (!strcmp(kobj_id, ORANGEFS_KOBJ_ID)) { orangefs_attr = (struct orangefs_attribute *)attr; + /* Drop unsupported requests first. */ + if (!(orangefs_features & ORANGEFS_FEATURE_READAHEAD) && + (!strcmp(orangefs_attr->attr.name, "readahead_count") || + !strcmp(orangefs_attr->attr.name, "readahead_size") || + !strcmp(orangefs_attr->attr.name, + "readahead_count_size"))) { + rc = -EINVAL; + goto out; + } if (!strcmp(orangefs_attr->attr.name, "perf_history_size")) { if (val > 0) { |