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authorKay Sievers <kay.sievers@vrfy.org>2007-08-14 15:15:12 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:51:01 -0700
commit7eff2e7a8b65c25920207324e56611150eb1cd9a (patch)
tree02a0eeba9d25d996233e30c18f258dfae0ae2139 /drivers/pcmcia/ds.c
parent8380770c842faef3001e44662953d64ad9a93663 (diff)
downloadlinux-7eff2e7a8b65c25920207324e56611150eb1cd9a.tar.bz2
Driver core: change add_uevent_var to use a struct
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>
Diffstat (limited to 'drivers/pcmcia/ds.c')
-rw-r--r--drivers/pcmcia/ds.c26
1 files changed, 6 insertions, 20 deletions
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index a99607142fc8..55baa1f0fcbb 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -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;
}