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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-15 10:01:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-15 10:01:51 -0700
commit726eb70e0d34dc4bc4dada71f52bba8ed638431e (patch)
treee49674616f4513c8c6a4746a08e93c9441708d34 /lib
parentc6dbef7307629cce855aa6b482b60cbf7777ed88 (diff)
parentf3277cbfba763cd2826396521b9296de67cf1bbc (diff)
Merge tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH: "Here is the big set of char, misc, and other assorted driver subsystem patches for 5.10-rc1. There's a lot of different things in here, all over the drivers/ directory. Some summaries: - soundwire driver updates - habanalabs driver updates - extcon driver updates - nitro_enclaves new driver - fsl-mc driver and core updates - mhi core and bus updates - nvmem driver updates - eeprom driver updates - binder driver updates and fixes - vbox minor bugfixes - fsi driver updates - w1 driver updates - coresight driver updates - interconnect driver updates - misc driver updates - other minor driver updates All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (396 commits) binder: fix UAF when releasing todo list docs: w1: w1_therm: Fix broken xref, mistakes, clarify text misc: Kconfig: fix a HISI_HIKEY_USB dependency LSM: Fix type of id parameter in kernel_post_load_data prototype misc: Kconfig: add a new dependency for HISI_HIKEY_USB firmware_loader: fix a kernel-doc markup w1: w1_therm: make w1_poll_completion static binder: simplify the return expression of binder_mmap test_firmware: Test partial read support firmware: Add request_partial_firmware_into_buf() firmware: Store opt_flags in fw_priv fs/kernel_file_read: Add "offset" arg for partial reads IMA: Add support for file reads without contents LSM: Add "contents" flag to kernel_read_file hook module: Call security_kernel_post_load_data() firmware_loader: Use security_post_load_data() LSM: Introduce kernel_post_load_data() hook fs/kernel_read_file: Add file_size output argument fs/kernel_read_file: Switch buffer size arg to size_t fs/kernel_read_file: Remove redundant size argument ...
Diffstat (limited to 'lib')
-rw-r--r--lib/test_firmware.c154
1 files changed, 142 insertions, 12 deletions
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 06c955057756..2baa275a6ddf 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -52,6 +52,9 @@ struct test_batched_req {
* @name: the name of the firmware file to look for
* @into_buf: when the into_buf is used if this is true
* request_firmware_into_buf() will be used instead.
+ * @buf_size: size of buf to allocate when into_buf is true
+ * @file_offset: file offset to request when calling request_firmware_into_buf
+ * @partial: partial read opt when calling request_firmware_into_buf
* @sync_direct: when the sync trigger is used if this is true
* request_firmware_direct() will be used instead.
* @send_uevent: whether or not to send a uevent for async requests
@@ -91,6 +94,9 @@ struct test_batched_req {
struct test_config {
char *name;
bool into_buf;
+ size_t buf_size;
+ size_t file_offset;
+ bool partial;
bool sync_direct;
bool send_uevent;
u8 num_requests;
@@ -185,6 +191,9 @@ static int __test_firmware_config_init(void)
test_fw_config->num_requests = TEST_FIRMWARE_NUM_REQS;
test_fw_config->send_uevent = true;
test_fw_config->into_buf = false;
+ test_fw_config->buf_size = TEST_FIRMWARE_BUF_SIZE;
+ test_fw_config->file_offset = 0;
+ test_fw_config->partial = false;
test_fw_config->sync_direct = false;
test_fw_config->req_firmware = request_firmware;
test_fw_config->test_result = 0;
@@ -238,28 +247,35 @@ static ssize_t config_show(struct device *dev,
dev_name(dev));
if (test_fw_config->name)
- len += scnprintf(buf+len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"name:\t%s\n",
test_fw_config->name);
else
- len += scnprintf(buf+len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"name:\tEMTPY\n");
- len += scnprintf(buf+len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"num_requests:\t%u\n", test_fw_config->num_requests);
- len += scnprintf(buf+len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"send_uevent:\t\t%s\n",
test_fw_config->send_uevent ?
"FW_ACTION_HOTPLUG" :
"FW_ACTION_NOHOTPLUG");
- len += scnprintf(buf+len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"into_buf:\t\t%s\n",
test_fw_config->into_buf ? "true" : "false");
- len += scnprintf(buf+len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "buf_size:\t%zu\n", test_fw_config->buf_size);
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "file_offset:\t%zu\n", test_fw_config->file_offset);
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "partial:\t\t%s\n",
+ test_fw_config->partial ? "true" : "false");
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"sync_direct:\t\t%s\n",
test_fw_config->sync_direct ? "true" : "false");
- len += scnprintf(buf+len, PAGE_SIZE - len,
+ len += scnprintf(buf + len, PAGE_SIZE - len,
"read_fw_idx:\t%u\n", test_fw_config->read_fw_idx);
mutex_unlock(&test_fw_mutex);
@@ -317,6 +333,30 @@ static ssize_t test_dev_config_show_bool(char *buf, bool val)
return snprintf(buf, PAGE_SIZE, "%d\n", val);
}
+static int test_dev_config_update_size_t(const char *buf,
+ size_t size,
+ size_t *cfg)
+{
+ int ret;
+ long new;
+
+ ret = kstrtol(buf, 10, &new);
+ if (ret)
+ return ret;
+
+ mutex_lock(&test_fw_mutex);
+ *(size_t *)cfg = new;
+ mutex_unlock(&test_fw_mutex);
+
+ /* Always return full write size even if we didn't consume all */
+ return size;
+}
+
+static ssize_t test_dev_config_show_size_t(char *buf, size_t val)
+{
+ return snprintf(buf, PAGE_SIZE, "%zu\n", val);
+}
+
static ssize_t test_dev_config_show_int(char *buf, int val)
{
return snprintf(buf, PAGE_SIZE, "%d\n", val);
@@ -402,6 +442,83 @@ static ssize_t config_into_buf_show(struct device *dev,
}
static DEVICE_ATTR_RW(config_into_buf);
+static ssize_t config_buf_size_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int rc;
+
+ mutex_lock(&test_fw_mutex);
+ if (test_fw_config->reqs) {
+ pr_err("Must call release_all_firmware prior to changing config\n");
+ rc = -EINVAL;
+ mutex_unlock(&test_fw_mutex);
+ goto out;
+ }
+ mutex_unlock(&test_fw_mutex);
+
+ rc = test_dev_config_update_size_t(buf, count,
+ &test_fw_config->buf_size);
+
+out:
+ return rc;
+}
+
+static ssize_t config_buf_size_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return test_dev_config_show_size_t(buf, test_fw_config->buf_size);
+}
+static DEVICE_ATTR_RW(config_buf_size);
+
+static ssize_t config_file_offset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int rc;
+
+ mutex_lock(&test_fw_mutex);
+ if (test_fw_config->reqs) {
+ pr_err("Must call release_all_firmware prior to changing config\n");
+ rc = -EINVAL;
+ mutex_unlock(&test_fw_mutex);
+ goto out;
+ }
+ mutex_unlock(&test_fw_mutex);
+
+ rc = test_dev_config_update_size_t(buf, count,
+ &test_fw_config->file_offset);
+
+out:
+ return rc;
+}
+
+static ssize_t config_file_offset_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return test_dev_config_show_size_t(buf, test_fw_config->file_offset);
+}
+static DEVICE_ATTR_RW(config_file_offset);
+
+static ssize_t config_partial_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return test_dev_config_update_bool(buf,
+ count,
+ &test_fw_config->partial);
+}
+
+static ssize_t config_partial_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return test_dev_config_show_bool(buf, test_fw_config->partial);
+}
+static DEVICE_ATTR_RW(config_partial);
+
static ssize_t config_sync_direct_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -659,11 +776,21 @@ static int test_fw_run_batch_request(void *data)
if (!test_buf)
return -ENOSPC;
- req->rc = request_firmware_into_buf(&req->fw,
- req->name,
- req->dev,
- test_buf,
- TEST_FIRMWARE_BUF_SIZE);
+ if (test_fw_config->partial)
+ req->rc = request_partial_firmware_into_buf
+ (&req->fw,
+ req->name,
+ req->dev,
+ test_buf,
+ test_fw_config->buf_size,
+ test_fw_config->file_offset);
+ else
+ req->rc = request_firmware_into_buf
+ (&req->fw,
+ req->name,
+ req->dev,
+ test_buf,
+ test_fw_config->buf_size);
if (!req->fw)
kfree(test_buf);
} else {
@@ -936,6 +1063,9 @@ static struct attribute *test_dev_attrs[] = {
TEST_FW_DEV_ATTR(config_name),
TEST_FW_DEV_ATTR(config_num_requests),
TEST_FW_DEV_ATTR(config_into_buf),
+ TEST_FW_DEV_ATTR(config_buf_size),
+ TEST_FW_DEV_ATTR(config_file_offset),
+ TEST_FW_DEV_ATTR(config_partial),
TEST_FW_DEV_ATTR(config_sync_direct),
TEST_FW_DEV_ATTR(config_send_uevent),
TEST_FW_DEV_ATTR(config_read_fw_idx),

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