diff --git a/Makefile b/Makefile index ece8970..a26d19a 100644 --- a/Makefile +++ b/Makefile @@ -1,6 +1,6 @@ VERSION = 3 PATCHLEVEL = 4 -SUBLEVEL = 32 +SUBLEVEL = 33 EXTRAVERSION = NAME = Saber-toothed Squirrel diff --git a/include/linux/syslog.h b/include/linux/syslog.h index 3891139..ce4c665 100644 --- a/include/linux/syslog.h +++ b/include/linux/syslog.h @@ -47,6 +47,12 @@ #define SYSLOG_FROM_CALL 0 #define SYSLOG_FROM_FILE 1 +/* + * Syslog priority (PRI) maximum length in char : '<[0-9]{1,3}>' + * See RFC5424 for details +*/ +#define SYSLOG_PRI_MAX_LENGTH 5 + int do_syslog(int type, char __user *buf, int count, bool from_file); #endif /* _LINUX_SYSLOG_H */ diff --git a/kernel/printk.c b/kernel/printk.c index b663c2c..e95c662 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -638,8 +638,19 @@ static void call_console_drivers(unsigned start, unsigned end) start_print = start; while (cur_index != end) { if (msg_level < 0 && ((end - cur_index) > 2)) { + /* + * prepare buf_prefix, as a contiguous array, + * to be processed by log_prefix function + */ + char buf_prefix[SYSLOG_PRI_MAX_LENGTH+1]; + unsigned i; + for (i = 0; i < ((end - cur_index)) && (i < SYSLOG_PRI_MAX_LENGTH); i++) { + buf_prefix[i] = LOG_BUF(cur_index + i); + } + buf_prefix[i] = '\0'; /* force '\0' as last string character */ + /* strip log prefix */ - cur_index += log_prefix(&LOG_BUF(cur_index), &msg_level, NULL); + cur_index += log_prefix((const char *)&buf_prefix, &msg_level, NULL); start_print = cur_index; } while (cur_index != end) {