In kernel we have function to escape a given string. Let's use it instead of custom approach. This fixes a bug. The current implementation wrongly prints octal numbers: only two first digits are used in case when 3 are required and the rest of the string ends up cut off. Additionally the \f, \v, \a, and \e are escaped to their alphabetic representation. It's safe to do since the print_ssid() is currently used for messaging only. Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> --- net/wireless/lib80211.c | 24 ++---------------------- 1 file changed, 2 insertions(+), 22 deletions(-) diff --git a/net/wireless/lib80211.c b/net/wireless/lib80211.c index a55c27b..0c2f67b 100644 --- a/net/wireless/lib80211.c +++ b/net/wireless/lib80211.c @@ -22,6 +22,7 @@ #include <linux/init.h> #include <linux/slab.h> #include <linux/string.h> +#include <linux/string_helpers.h> #include <net/lib80211.h> @@ -48,31 +49,10 @@ static void lib80211_crypt_deinit_handler(unsigned long data); const char *print_ssid(char *buf, const char *ssid, u8 ssid_len) { - const char *s = ssid; char *d = buf; ssid_len = min_t(u8, ssid_len, IEEE80211_MAX_SSID_LEN); - while (ssid_len--) { - if (isprint(*s)) { - *d++ = *s++; - continue; - } - - *d++ = '\\'; - if (*s == '\0') - *d++ = '0'; - else if (*s == '\n') - *d++ = 'n'; - else if (*s == '\r') - *d++ = 'r'; - else if (*s == '\t') - *d++ = 't'; - else if (*s == '\\') - *d++ = '\\'; - else - d += snprintf(d, 3, "%03o", *s); - s++; - } + d += string_escape_mem_any_np(ssid, ssid_len, buf, ~0UL, NULL); *d = '\0'; return buf; } -- 2.0.0 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel