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// SPDX-License-Identifier: GPL-2.0-only
///
/// From Documentation/filesystems/sysfs.rst:
/// show() must not use snprintf() when formatting the value to be
/// returned to user space. If you can guarantee that an overflow
/// will never happen you can use sprintf() otherwise you must use
/// scnprintf().
///
// Confidence: High
// Copyright: (C) 2020 Denis Efremov ISPRAS
// Options: --no-includes --include-headers
//
virtual report
virtual org
virtual context
virtual patch
@r depends on !patch@
identifier show, dev, attr, buf;
position p;
@@
ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
* return snprintf@p(...);
...>
}
@rp depends on patch@
identifier show, dev, attr, buf;
@@
ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
return
- snprintf
+ scnprintf
(...);
...>
}
@script: python depends on report@
p << r.p;
@@
coccilib.report.print_report(p[0], "WARNING: use scnprintf or sprintf")
@script: python depends on org@
p << r.p;
@@
coccilib.org.print_todo(p[0], "WARNING: use scnprintf or sprintf")
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| alloc | Folder | 0755 |
|
|
| debugfs | Folder | 0755 |
|
|
| atomic_as_refcounter.cocci | File | 2.22 KB | 0644 |
|
| check_bq27xxx_data.cocci | File | 3.46 KB | 0644 |
|
| d_find_alias.cocci | File | 1.28 KB | 0644 |
|
| device_attr_show.cocci | File | 1.08 KB | 0644 |
|
| err_cast.cocci | File | 1.09 KB | 0644 |
|
| kfree_mismatch.cocci | File | 5.56 KB | 0644 |
|
| kfree_sensitive.cocci | File | 1.91 KB | 0644 |
|
| kstrdup.cocci | File | 2.42 KB | 0644 |
|
| kvmalloc.cocci | File | 6.13 KB | 0644 |
|
| memdup.cocci | File | 1.33 KB | 0644 |
|
| memdup_user.cocci | File | 2.58 KB | 0644 |
|
| platform_get_irq.cocci | File | 1.22 KB | 0644 |
|
| platform_no_drv_owner.cocci | File | 3.81 KB | 0644 |
|
| pm_runtime.cocci | File | 2.37 KB | 0644 |
|
| resource_size.cocci | File | 2.08 KB | 0644 |
|
| simple_open.cocci | File | 1.21 KB | 0644 |
|
| stream_open.cocci | File | 7.7 KB | 0644 |
|
| vma_pages.cocci | File | 1.48 KB | 0644 |
|