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| author | James Ketrenos <jketreno@linux.intel.com> | 2005-09-13 17:42:53 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-09-16 03:11:58 -0400 |
| commit | 262d8e467710a1c870717bc432caaf74cde3ce20 (patch) | |
| tree | 17ce405907e553bdb8691a60df3d4805461bec72 /net/ieee80211/ieee80211_module.c | |
| parent | 18294d8727b825eb2f3f98d6b6ae4a999dff854a (diff) | |
| download | lwn-262d8e467710a1c870717bc432caaf74cde3ce20.tar.gz lwn-262d8e467710a1c870717bc432caaf74cde3ce20.zip | |
[PATCH] ieee80211 Switched to sscanf in store_debug_level
Switched to sscanf as per friendly comment in store_debug_level.
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'net/ieee80211/ieee80211_module.c')
| -rw-r--r-- | net/ieee80211/ieee80211_module.c | 26 |
1 files changed, 6 insertions, 20 deletions
diff --git a/net/ieee80211/ieee80211_module.c b/net/ieee80211/ieee80211_module.c index 03a47343ddc7..4b43ae1235f9 100644 --- a/net/ieee80211/ieee80211_module.c +++ b/net/ieee80211/ieee80211_module.c @@ -195,34 +195,20 @@ static int show_debug_level(char *page, char **start, off_t offset, static int store_debug_level(struct file *file, const char __user * buffer, unsigned long count, void *data) { - char buf[] = "0x00000000"; - char *p = (char *)buf; + char buf[] = "0x00000000\n"; + unsigned long len = min((unsigned long)sizeof(buf) - 1, count); unsigned long val; - if (count > sizeof(buf) - 1) - count = sizeof(buf) - 1; - - if (copy_from_user(buf, buffer, count)) + if (copy_from_user(buf, buffer, len)) return count; - buf[count] = 0; - /* - * what a FPOS... What, sscanf(buf, "%i", &val) would be too - * scary? - */ - if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { - p++; - if (p[0] == 'x' || p[0] == 'X') - p++; - val = simple_strtoul(p, &p, 16); - } else - val = simple_strtoul(p, &p, 10); - if (p == buf) + buf[len] = 0; + if (sscanf(buf, "%li", &val) != 1) printk(KERN_INFO DRV_NAME ": %s is not in hex or decimal form.\n", buf); else ieee80211_debug_level = val; - return strlen(buf); + return strnlen(buf, len); } static int __init ieee80211_init(void) |