提交 c7fa9d18 编写于 作者: D David S. Miller

[NET]: Disallow whitespace in network device names.

It causes way too much trouble and confusion in userspace.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 d4274b51
......@@ -116,6 +116,7 @@
#include <linux/audit.h>
#include <linux/dmaengine.h>
#include <linux/err.h>
#include <linux/ctype.h>
/*
* The list of packet types we will receive (as opposed to discard)
......@@ -632,14 +633,22 @@ struct net_device * dev_get_by_flags(unsigned short if_flags, unsigned short mas
* @name: name string
*
* Network device names need to be valid file names to
* to allow sysfs to work
* to allow sysfs to work. We also disallow any kind of
* whitespace.
*/
int dev_valid_name(const char *name)
{
return !(*name == '\0'
|| !strcmp(name, ".")
|| !strcmp(name, "..")
|| strchr(name, '/'));
if (*name == '\0')
return 0;
if (!strcmp(name, ".") || !strcmp(name, ".."))
return 0;
while (*name) {
if (*name == '/' || isspace(*name))
return 0;
name++;
}
return 1;
}
/**
......
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