diff options
author | Joe Perches <joe@perches.com> | 2020-09-16 13:40:39 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-02 13:09:10 +0200 |
commit | aa838896d87af561a33ecefea1caa4c15a68bc47 (patch) | |
tree | c68f898ab074e81787be1f99a9cf50d06db06d15 /drivers/base/core.c | |
parent | 2efc459d06f1630001e3984854848a5647086232 (diff) |
drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions
Convert the various sprintf fmaily calls in sysfs device show functions
to sysfs_emit and sysfs_emit_at for PAGE_SIZE buffer safety.
Done with:
$ spatch -sp-file sysfs_emit_dev.cocci --in-place --max-width=80 .
And cocci script:
$ cat sysfs_emit_dev.cocci
@@
identifier d_show;
identifier dev, attr, buf;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
return
- sprintf(buf,
+ sysfs_emit(buf,
...);
...>
}
@@
identifier d_show;
identifier dev, attr, buf;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
return
- snprintf(buf, PAGE_SIZE,
+ sysfs_emit(buf,
...);
...>
}
@@
identifier d_show;
identifier dev, attr, buf;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
return
- scnprintf(buf, PAGE_SIZE,
+ sysfs_emit(buf,
...);
...>
}
@@
identifier d_show;
identifier dev, attr, buf;
expression chr;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
return
- strcpy(buf, chr);
+ sysfs_emit(buf, chr);
...>
}
@@
identifier d_show;
identifier dev, attr, buf;
identifier len;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
len =
- sprintf(buf,
+ sysfs_emit(buf,
...);
...>
return len;
}
@@
identifier d_show;
identifier dev, attr, buf;
identifier len;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
len =
- snprintf(buf, PAGE_SIZE,
+ sysfs_emit(buf,
...);
...>
return len;
}
@@
identifier d_show;
identifier dev, attr, buf;
identifier len;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
len =
- scnprintf(buf, PAGE_SIZE,
+ sysfs_emit(buf,
...);
...>
return len;
}
@@
identifier d_show;
identifier dev, attr, buf;
identifier len;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
<...
- len += scnprintf(buf + len, PAGE_SIZE - len,
+ len += sysfs_emit_at(buf, len,
...);
...>
return len;
}
@@
identifier d_show;
identifier dev, attr, buf;
expression chr;
@@
ssize_t d_show(struct device *dev, struct device_attribute *attr, char *buf)
{
...
- strcpy(buf, chr);
- return strlen(buf);
+ return sysfs_emit(buf, chr);
}
Signed-off-by: Joe Perches <joe@perches.com>
Link: https://lore.kernel.org/r/3d033c33056d88bbe34d4ddb62afd05ee166ab9a.1600285923.git.joe@perches.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/core.c')
-rw-r--r-- | drivers/base/core.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index b79783454293..b1f8762ac451 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -260,7 +260,7 @@ static ssize_t status_show(struct device *dev, default: status = "unknown"; break; } - return sprintf(buf, "%s\n", status); + return sysfs_emit(buf, "%s\n", status); } static DEVICE_ATTR_RO(status); @@ -277,7 +277,7 @@ static ssize_t auto_remove_on_show(struct device *dev, else str = "never"; - return sprintf(buf, "%s\n", str); + return sysfs_emit(buf, "%s\n", str); } static DEVICE_ATTR_RO(auto_remove_on); @@ -286,7 +286,7 @@ static ssize_t runtime_pm_show(struct device *dev, { struct device_link *link = to_devlink(dev); - return sprintf(buf, "%d\n", !!(link->flags & DL_FLAG_PM_RUNTIME)); + return sysfs_emit(buf, "%d\n", !!(link->flags & DL_FLAG_PM_RUNTIME)); } static DEVICE_ATTR_RO(runtime_pm); @@ -295,7 +295,8 @@ static ssize_t sync_state_only_show(struct device *dev, { struct device_link *link = to_devlink(dev); - return sprintf(buf, "%d\n", !!(link->flags & DL_FLAG_SYNC_STATE_ONLY)); + return sysfs_emit(buf, "%d\n", + !!(link->flags & DL_FLAG_SYNC_STATE_ONLY)); } static DEVICE_ATTR_RO(sync_state_only); @@ -1060,7 +1061,7 @@ static ssize_t waiting_for_supplier_show(struct device *dev, && dev->links.need_for_probe; mutex_unlock(&wfs_lock); device_unlock(dev); - return sprintf(buf, "%u\n", val); + return sysfs_emit(buf, "%u\n", val); } static DEVICE_ATTR_RO(waiting_for_supplier); @@ -1710,7 +1711,7 @@ ssize_t device_show_ulong(struct device *dev, char *buf) { struct dev_ext_attribute *ea = to_ext_attr(attr); - return snprintf(buf, PAGE_SIZE, "%lx\n", *(unsigned long *)(ea->var)); + return sysfs_emit(buf, "%lx\n", *(unsigned long *)(ea->var)); } EXPORT_SYMBOL_GPL(device_show_ulong); @@ -1740,7 +1741,7 @@ ssize_t device_show_int(struct device *dev, { struct dev_ext_attribute *ea = to_ext_attr(attr); - return snprintf(buf, PAGE_SIZE, "%d\n", *(int *)(ea->var)); + return sysfs_emit(buf, "%d\n", *(int *)(ea->var)); } EXPORT_SYMBOL_GPL(device_show_int); @@ -1761,7 +1762,7 @@ ssize_t device_show_bool(struct device *dev, struct device_attribute *attr, { struct dev_ext_attribute *ea = to_ext_attr(attr); - return snprintf(buf, PAGE_SIZE, "%d\n", *(bool *)(ea->var)); + return sysfs_emit(buf, "%d\n", *(bool *)(ea->var)); } EXPORT_SYMBOL_GPL(device_show_bool); @@ -1993,7 +1994,7 @@ static ssize_t online_show(struct device *dev, struct device_attribute *attr, device_lock(dev); val = !dev->offline; device_unlock(dev); - return sprintf(buf, "%u\n", val); + return sysfs_emit(buf, "%u\n", val); } static ssize_t online_store(struct device *dev, struct device_attribute *attr, |