| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <be2652c737e87e83d4fcf168b4be40da4c222497.1351135989.git.joe@perches.com>
Date: Wed, 24 Oct 2012 20:43:56 -0700
From: Joe Perches <joe@...ches.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Kay Sievers <kay@...y.org>, linux-kernel@...r.kernel.org
Subject: [PATCH V2 21/23] printk: Move functions printk_print_time and printk_msg_print_text
Move these functions to printk_log.
Move the static function print_prefix too.
Add "#include <linux/moduleparam.h>" to printk_log.c.
Signed-off-by: Joe Perches <joe@...ches.com>
---
kernel/printk/printk.c | 112 -------------------------------------------
kernel/printk/printk_log.c | 114 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 114 insertions(+), 112 deletions(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index b671523..0c6042a 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -311,111 +311,6 @@ static int check_syslog_permissions(int type, bool from_file)
return 0;
}
-#if defined(CONFIG_PRINTK_TIME)
-static bool printk_time = 1;
-#else
-static bool printk_time;
-#endif
-module_param_named(time, printk_time, bool, S_IRUGO | S_IWUSR);
-
-size_t printk_print_time(u64 ts, char *buf)
-{
- unsigned long rem_nsec;
-
- if (!printk_time)
- return 0;
-
- if (!buf)
- return 15;
-
- rem_nsec = do_div(ts, 1000000000);
- return sprintf(buf, "[%5lu.%06lu] ",
- (unsigned long)ts, rem_nsec / 1000);
-}
-
-static size_t print_prefix(const struct printk_log *msg, bool syslog, char *buf)
-{
- size_t len = 0;
- unsigned int prefix = (msg->facility << 3) | msg->level;
-
- if (syslog) {
- if (buf) {
- len += sprintf(buf, "<%u>", prefix);
- } else {
- len += 3;
- if (prefix > 999)
- len += 3;
- else if (prefix > 99)
- len += 2;
- else if (prefix > 9)
- len++;
- }
- }
-
- len += printk_print_time(msg->ts_nsec, buf ? buf + len : NULL);
- return len;
-}
-
-size_t printk_msg_print_text(const struct printk_log *msg,
- enum printk_log_flags prev,
- bool syslog, char *buf, size_t size)
-{
- const char *text = printk_log_text(msg);
- size_t text_size = msg->text_len;
- bool prefix = true;
- bool newline = true;
- size_t len = 0;
-
- if ((prev & LOG_CONT) && !(msg->flags & LOG_PREFIX))
- prefix = false;
-
- if (msg->flags & LOG_CONT) {
- if ((prev & LOG_CONT) && !(prev & LOG_NEWLINE))
- prefix = false;
-
- if (!(msg->flags & LOG_NEWLINE))
- newline = false;
- }
-
- do {
- const char *next = memchr(text, '\n', text_size);
- size_t text_len;
-
- if (next) {
- text_len = next - text;
- next++;
- text_size -= next - text;
- } else {
- text_len = text_size;
- }
-
- if (buf) {
- if (print_prefix(msg, syslog, NULL) +
- text_len + 1 >= size - len)
- break;
-
- if (prefix)
- len += print_prefix(msg, syslog, buf + len);
- memcpy(buf + len, text, text_len);
- len += text_len;
- if (next || newline)
- buf[len++] = '\n';
- } else {
- /* SYSLOG_ACTION_* buffer size only calculation */
- if (prefix)
- len += print_prefix(msg, syslog, NULL);
- len += text_len;
- if (next || newline)
- len++;
- }
-
- prefix = true;
- text = next;
- } while (text);
-
- return len;
-}
-
static int syslog_print(char __user *buf, int size)
{
char *text;
@@ -1184,13 +1079,6 @@ static struct cont {
struct printk_log *printk_log_from_idx(u32 idx) { return NULL; }
u32 printk_log_next(u32 idx) { return 0; }
static void call_console_drivers(int level, const char *text, size_t len) {}
-size_t printk_print_time(u64 ts, char *buf) { return 0; }
-size_t printk_msg_print_text(const struct printk_log *msg,
- enum printk_log_flags prev,
- bool syslog, char *buf, size_t size)
-{
- return 0;
-}
static size_t cont_print_text(char *text, size_t size) { return 0; }
diff --git a/kernel/printk/printk_log.c b/kernel/printk/printk_log.c
index b5c2b8f..d38129c 100644
--- a/kernel/printk/printk_log.c
+++ b/kernel/printk/printk_log.c
@@ -2,6 +2,8 @@
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/kexec.h>
+#include <linux/moduleparam.h>
+#include <linux/stat.h>
#include "printk_log.h"
@@ -135,6 +137,111 @@ void printk_log_store(int facility, int level,
printk_log_next_seq++;
}
+#if defined(CONFIG_PRINTK_TIME)
+static bool printk_time = 1;
+#else
+static bool printk_time;
+#endif
+module_param_named(time, printk_time, bool, S_IRUGO | S_IWUSR);
+
+size_t printk_print_time(u64 ts, char *buf)
+{
+ unsigned long rem_nsec;
+
+ if (!printk_time)
+ return 0;
+
+ if (!buf)
+ return 15;
+
+ rem_nsec = do_div(ts, 1000000000);
+ return sprintf(buf, "[%5lu.%06lu] ",
+ (unsigned long)ts, rem_nsec / 1000);
+}
+
+static size_t print_prefix(const struct printk_log *msg, bool syslog, char *buf)
+{
+ size_t len = 0;
+ unsigned int prefix = (msg->facility << 3) | msg->level;
+
+ if (syslog) {
+ if (buf) {
+ len += sprintf(buf, "<%u>", prefix);
+ } else {
+ len += 3;
+ if (prefix > 999)
+ len += 3;
+ else if (prefix > 99)
+ len += 2;
+ else if (prefix > 9)
+ len++;
+ }
+ }
+
+ len += printk_print_time(msg->ts_nsec, buf ? buf + len : NULL);
+ return len;
+}
+
+size_t printk_msg_print_text(const struct printk_log *msg,
+ enum printk_log_flags prev,
+ bool syslog, char *buf, size_t size)
+{
+ const char *text = printk_log_text(msg);
+ size_t text_size = msg->text_len;
+ bool prefix = true;
+ bool newline = true;
+ size_t len = 0;
+
+ if ((prev & LOG_CONT) && !(msg->flags & LOG_PREFIX))
+ prefix = false;
+
+ if (msg->flags & LOG_CONT) {
+ if ((prev & LOG_CONT) && !(prev & LOG_NEWLINE))
+ prefix = false;
+
+ if (!(msg->flags & LOG_NEWLINE))
+ newline = false;
+ }
+
+ do {
+ const char *next = memchr(text, '\n', text_size);
+ size_t text_len;
+
+ if (next) {
+ text_len = next - text;
+ next++;
+ text_size -= next - text;
+ } else {
+ text_len = text_size;
+ }
+
+ if (buf) {
+ if (print_prefix(msg, syslog, NULL) +
+ text_len + 1 >= size - len)
+ break;
+
+ if (prefix)
+ len += print_prefix(msg, syslog, buf + len);
+ memcpy(buf + len, text, text_len);
+ len += text_len;
+ if (next || newline)
+ buf[len++] = '\n';
+ } else {
+ /* SYSLOG_ACTION_* buffer size only calculation */
+ if (prefix)
+ len += print_prefix(msg, syslog, NULL);
+ len += text_len;
+ if (next || newline)
+ len++;
+ }
+
+ prefix = true;
+ text = next;
+ } while (text);
+
+ return len;
+}
+
#else /* CONFIG_PRINTK */
#define LOG_LINE_MAX 0
@@ -145,5 +252,12 @@ u32 printk_log_first_idx;
u64 printk_log_next_seq;
struct printk_log *printk_log_from_idx(u32 idx) { return NULL; }
u32 printk_log_next(u32 idx) { return 0; }
+size_t printk_print_time(u64 ts, char *buf) { return 0; }
+size_t printk_msg_print_text(const struct printk_log *msg,
+ enum printk_log_flags prev,
+ bool syslog, char *buf, size_t size)
+{
+ return 0;
+}
#endif /* CONFIG_PRINTK */
--
1.7.8.112.g3fd21
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists