netconsole: support packets longer than 512 bytes

[karo-tx-uboot.git] / lib / vsprintf.c

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index aa214dd06fc3cc836a49929f4f76343c8b34dbcd..79dead3996eb14bc82f40a68966be743e0743216 100644 (file)
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -13,12 +13,11 @@
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/ctype.h>
+#include <errno.h>
 
 #include <common.h>
 #if !defined (CONFIG_PANIC_HANG)
 #include <command.h>
-/*cmd_boot.c*/
-extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 #endif
 
 #include <div64.h>
@@ -63,6 +62,56 @@ unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
        return result;
 }
 
+/**
+ * strict_strtoul - convert a string to an unsigned long strictly
+ * @cp: The string to be converted
+ * @base: The number base to use
+ * @res: The converted result value
+ *
+ * strict_strtoul converts a string to an unsigned long only if the
+ * string is really an unsigned long string, any string containing
+ * any invalid char at the tail will be rejected and -EINVAL is returned,
+ * only a newline char at the tail is acceptible because people generally
+ * change a module parameter in the following way:
+ *
+ *      echo 1024 > /sys/module/e1000/parameters/copybreak
+ *
+ * echo will append a newline to the tail.
+ *
+ * It returns 0 if conversion is successful and *res is set to the converted
+ * value, otherwise it returns -EINVAL and *res is set to 0.
+ *
+ * simple_strtoul just ignores the successive invalid characters and
+ * return the converted value of prefix part of the string.
+ *
+ * Copied this function from Linux 2.6.38 commit ID:
+ * 521cb40b0c44418a4fd36dc633f575813d59a43d
+ *
+ */
+int strict_strtoul(const char *cp, unsigned int base, unsigned long *res)
+{
+       char *tail;
+       unsigned long val;
+       size_t len;
+
+       *res = 0;
+       len = strlen(cp);
+       if (len == 0)
+               return -EINVAL;
+
+       val = simple_strtoul(cp, &tail, base);
+       if (tail == cp)
+               return -EINVAL;
+
+       if ((*tail == '\0') ||
+               ((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) {
+               *res = val;
+               return 0;
+       }
+
+       return -EINVAL;
+}
+
 long simple_strtol(const char *cp,char **endp,unsigned int base)
 {
        if(*cp=='-')
@@ -678,4 +727,14 @@ void panic(const char *fmt, ...)
        udelay (100000);        /* allow messages to go out */
        do_reset (NULL, 0, 0, NULL);
 #endif
+       while (1)
+               ;
+}
+
+void __assert_fail(const char *assertion, const char *file, unsigned line,
+                  const char *function)
+{
+       /* This will not return */
+       panic("%s:%u: %s: Assertion `%s' failed.", file, line, function,
+             assertion);
 }