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printk: only look for prefix levels in kernel messages

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vprintk_emit() prefix parsing should only be done for internal kernel
messages.  This allows existing behavior to be kept in all cases.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Kay Sievers <kay@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2012-07-30 14:40:19 -07:00 committed by Linus Torvalds
parent 04d2c8c83d
commit 088a52aac8
1 changed files with 17 additions and 15 deletions
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32
kernel/printk.c
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@ -1487,7 +1487,6 @@ asmlinkage int vprintk_emit(int facility, int level,
size_t text_len;
enum log_flags lflags = 0;
unsigned long flags;
int kern_level;
int this_cpu;
int printed_len = 0;
@ -1543,21 +1542,24 @@ asmlinkage int vprintk_emit(int facility, int level,
lflags |= LOG_NEWLINE;
}
/* strip syslog prefix and extract log level or control flags */
kern_level = printk_get_level(text);
if (kern_level) {
const char *end_of_header = printk_skip_level(text);
switch (kern_level) {
case '0' ... '7':
if (level == -1)
level = kern_level - '0';
case 'd': /* KERN_DEFAULT */
lflags |= LOG_PREFIX;
case 'c': /* KERN_CONT */
break;
/* strip kernel syslog prefix and extract log level or control flags */
if (facility == 0) {
int kern_level = printk_get_level(text);
if (kern_level) {
const char *end_of_header = printk_skip_level(text);
switch (kern_level) {
case '0' ... '7':
if (level == -1)
level = kern_level - '0';
case 'd': /* KERN_DEFAULT */
lflags |= LOG_PREFIX;
case 'c': /* KERN_CONT */
break;
}
text_len -= end_of_header - text;
text = (char *)end_of_header;
}
text_len -= end_of_header - text;
text = (char *)end_of_header;
}
if (level == -1)