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Driver core: change add_uevent_var to use a struct

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This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.

Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kay Sievers
2007-08-14 15:15:12 +02:00
committed by Greg Kroah-Hartman
parent 8380770c84
commit 7eff2e7a8b
47 changed files with 300 additions and 636 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/pcmcia/ds.c
View File

@ -1064,11 +1064,10 @@ static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
#ifdef CONFIG_HOTPLUG
static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct pcmcia_device *p_dev;
int i, length = 0;
int i;
u32 hash[4] = { 0, 0, 0, 0};
if (!dev)
@ -1083,23 +1082,13 @@ static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
}
i = 0;
if (add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
"SOCKET_NO=%u",
p_dev->socket->sock))
if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock))
return -ENOMEM;
if (add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
"DEVICE_NO=%02X",
p_dev->device_no))
if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no))
return -ENOMEM;
if (add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
"MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
"pa%08Xpb%08Xpc%08Xpd%08X",
p_dev->has_manf_id ? p_dev->manf_id : 0,
p_dev->has_card_id ? p_dev->card_id : 0,
@ -1112,15 +1101,12 @@ static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
hash[3]))
return -ENOMEM;
envp[i] = NULL;
return 0;
}
#else
static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
{
return -ENODEV;
}