diff options
| author | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-24 20:31:39 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-04-03 14:54:24 -0700 |
| commit | 6d0d63bd7a9c0a6373c7759cb55580b806269dae (patch) | |
| tree | 59fa634c16446dd895c1dc9aa4272317454b6d24 /drivers/staging/p9auth/p9auth.c | |
| parent | 0f386e2b4c6109164e82277513a9570fc9ec644c (diff) | |
Staging: p9auth: use kzalloc
It's nicer than doing kmalloc/memset.
Also check the return value of all allocations, one was previously not
being checked properly.
Cc: Ashwin Ganti <ashwin.ganti@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/p9auth/p9auth.c')
| -rw-r--r-- | drivers/staging/p9auth/p9auth.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/staging/p9auth/p9auth.c b/drivers/staging/p9auth/p9auth.c index a6078bb813cb..e2a8753ecd0c 100644 --- a/drivers/staging/p9auth/p9auth.c +++ b/drivers/staging/p9auth/p9auth.c @@ -86,7 +86,7 @@ static char *cap_hash(char *plain_text, unsigned int plain_text_size, char *key, unsigned int key_size) { struct scatterlist sg; - char *result = kmalloc(MAX_DIGEST_SIZE, GFP_KERNEL); + char *result; struct crypto_hash *tfm; struct hash_desc desc; int ret; @@ -96,14 +96,18 @@ static char *cap_hash(char *plain_text, unsigned int plain_text_size, printk(KERN_ERR "failed to load transform for hmac(sha1): %ld\n", PTR_ERR(tfm)); - kfree(result); return NULL; } desc.tfm = tfm; desc.flags = 0; - memset(result, 0, MAX_DIGEST_SIZE); + result = kzalloc(MAX_DIGEST_SIZE, GFP_KERNEL); + if (!result) { + printk(KERN_ERR "out of memory!\n"); + goto out; + } + sg_set_buf(&sg, plain_text, plain_text_size); ret = crypto_hash_setkey(tfm, key, key_size); @@ -187,8 +191,7 @@ static ssize_t cap_write(struct file *filp, const char __user *buf, return -ERESTARTSYS; node_ptr = kmalloc(sizeof(struct cap_node), GFP_KERNEL); - user_buf = kmalloc(count, GFP_KERNEL); - memset(user_buf, 0, count); + user_buf = kzalloc(count, GFP_KERNEL); if (copy_from_user(user_buf, buf, count)) { retval = -EFAULT; @@ -218,8 +221,7 @@ static ssize_t cap_write(struct file *filp, const char __user *buf, /* hash the string user1@user2 with rand_str as the key */ len = strlen(source_user) + strlen(target_user) + 1; - hash_str = kmalloc(len, GFP_KERNEL); - memset(hash_str, 0, len); + hash_str = kzalloc(len, GFP_KERNEL); strcat(hash_str, source_user); strcat(hash_str, "@"); strcat(hash_str, target_user); @@ -364,13 +366,12 @@ static int cap_init_module(void) return result; } - cap_devices = - kmalloc(cap_nr_devs * sizeof(struct cap_dev), GFP_KERNEL); + cap_devices = kzalloc(cap_nr_devs * sizeof(struct cap_dev), + GFP_KERNEL); if (!cap_devices) { result = -ENOMEM; goto fail; } - memset(cap_devices, 0, cap_nr_devs * sizeof(struct cap_dev)); /* Initialize each device. */ for (i = 0; i < cap_nr_devs; i++) { |