Changeset 5a9f4d7 in mainline for uspace/app/klog/klog.c

Timestamp:

2010-07-27T16:45:43Z (14 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

571addd

Parents:

3629481

Message:

store kernel log output to /log/klog

File:

• uspace/app/klog/klog.c (modified) (3 diffs)

uspace/app/klog/klog.c

@@ -43 +43 @@
 #include <event.h>
 #include <errno.h>
+#include <str_error.h>
 #include <io/klog.h>
 
-#define NAME  "klog"
+#define NAME       "klog"
+#define LOG_FNAME  "/log/klog"
 
 /* Pointer to klog area */
 static wchar_t *klog;
 static size_t klog_length;
+
+static FILE *log;
 
 static void interrupt_received(ipc_callid_t callid, ipc_call_t *call)
@@ -58 +62 @@
         size_t i;
         
-        for (i = klog_len - klog_stored; i < klog_len; i++)
-                putchar(klog[(klog_start + i) % klog_length]);
+        for (i = klog_len - klog_stored; i < klog_len; i++) {
+                wchar_t ch = klog[(klog_start + i) % klog_length];
+                
+                putchar(ch);
+                
+                if (log != NULL)
+                        fprintf(log, "%lc", ch);
+        }
+        
+        if (log != NULL) {
+                fflush(log);
+                fsync(fileno(log));
+        }
 }
 
@@ -91 +106 @@
         }
         
+        /*
+         * Mode "a" would be definitively much better here, but it is
+         * not well supported by the FAT driver.
+         *
+         */
+        log = fopen(LOG_FNAME, "w");
+        if (log == NULL)
+                printf("%s: Unable to create log file %s (%s)\n", NAME, LOG_FNAME,
+                    str_error(errno));
+        
         async_set_interrupt_received(interrupt_received);
         klog_update();