hostapd: backport support for sending debug messages to the syslog

It wasn't possible to read hostapd wpa_printf messages unless running
hostapd manually. It was because hostapd was printing them using vprintf
and not directly to the syslog.

We were trying to workaround this problem by redirecting STDIN_FILENO
and STDOUT_FILENO but it was working only for the initialization phase.
As soon as hostapd did os_daemonize our solution stopped working.

Please note despite the subject this change doesn't affect debug level
messages only but just everything printed by hostapd with wpa_printf
including MSG_ERROR-s. This makes it even more important as reading
error messages can be quite useful for debugging.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 8 insertions, 8 deletions

diff --git a/package/network/services/hostapd/patches/410-limit_debug_messages.patch b/package/network/services/hostapd/patches/410-limit_debug_messages.patch
index a48b6962ee..b7dbbd0dc7 100644
--- a/package/network/services/hostapd/patches/410-limit_debug_messages.patch
+++ b/package/network/services/hostapd/patches/410-limit_debug_messages.patch
@@ -84,7 +84,7 @@
  	char *buf;
 --- a/src/utils/wpa_debug.h
 +++ b/src/utils/wpa_debug.h
-@@ -49,6 +49,17 @@ int wpa_debug_reopen_file(void);
+@@ -52,6 +52,17 @@ int wpa_debug_reopen_file(void);
  void wpa_debug_close_file(void);
  void wpa_debug_setup_stdout(void);
  
@@ -102,7 +102,7 @@
  /**
   * wpa_debug_printf_timestamp - Print timestamp for debug output
   *
-@@ -69,9 +80,15 @@ void wpa_debug_print_timestamp(void);
+@@ -72,9 +83,15 @@ void wpa_debug_print_timestamp(void);
   *
   * Note: New line '\n' is added to the end of the text when printing to stdout.
   */
@@ -119,7 +119,7 @@
  /**
   * wpa_hexdump - conditional hex dump
   * @level: priority level (MSG_*) of the message
-@@ -83,7 +100,13 @@ PRINTF_FORMAT(2, 3);
+@@ -86,7 +103,13 @@ PRINTF_FORMAT(2, 3);
   * output may be directed to stdout, stderr, and/or syslog based on
   * configuration. The contents of buf is printed out has hex dump.
   */
@@ -134,7 +134,7 @@
  
  static inline void wpa_hexdump_buf(int level, const char *title,
  				   const struct wpabuf *buf)
-@@ -105,7 +128,13 @@ static inline void wpa_hexdump_buf(int l
+@@ -108,7 +131,13 @@ static inline void wpa_hexdump_buf(int l
   * like wpa_hexdump(), but by default, does not include secret keys (passwords,
   * etc.) in debug output.
   */
@@ -149,7 +149,7 @@
  
  static inline void wpa_hexdump_buf_key(int level, const char *title,
  				       const struct wpabuf *buf)
-@@ -127,8 +156,14 @@ static inline void wpa_hexdump_buf_key(i
+@@ -130,8 +159,14 @@ static inline void wpa_hexdump_buf_key(i
   * the hex numbers and ASCII characters (for printable range) are shown. 16
   * bytes per line will be shown.
   */
@@ -166,7 +166,7 @@
  
  /**
   * wpa_hexdump_ascii_key - conditional hex dump, hide keys
-@@ -144,8 +179,14 @@ void wpa_hexdump_ascii(int level, const
+@@ -147,8 +182,14 @@ void wpa_hexdump_ascii(int level, const
   * bytes per line will be shown. This works like wpa_hexdump_ascii(), but by
   * default, does not include secret keys (passwords, etc.) in debug output.
   */
@@ -183,7 +183,7 @@
  
  /*
   * wpa_dbg() behaves like wpa_msg(), but it can be removed from build to reduce
-@@ -182,7 +223,12 @@ void wpa_hexdump_ascii_key(int level, co
+@@ -185,7 +226,12 @@ void wpa_hexdump_ascii_key(int level, co
   *
   * Note: New line '\n' is added to the end of the text when printing to stdout.
   */
@@ -197,7 +197,7 @@
  
  /**
   * wpa_msg_ctrl - Conditional printf for ctrl_iface monitors
-@@ -196,8 +242,13 @@ void wpa_msg(void *ctx, int level, const
+@@ -199,8 +245,13 @@ void wpa_msg(void *ctx, int level, const
   * attached ctrl_iface monitors. In other words, it can be used for frequent
   * events that do not need to be sent to syslog.
   */