compat_ioctl: pass compat pointer directly to handlers

[safe/jmp/linux-2.6] / lib / vsprintf.c

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index a1941f8..33bed5e 100644 (file)
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -581,7 +581,7 @@ static char *symbol_string(char *buf, char *end, void *ptr,
        unsigned long value = (unsigned long) ptr;
 #ifdef CONFIG_KALLSYMS
        char sym[KSYM_SYMBOL_LEN];
-       if (ext != 'f')
+       if (ext != 'f' && ext != 's')
                sprint_symbol(sym, value);
        else
                kallsyms_lookup(value, NULL, NULL, NULL, sym);
@@ -799,7 +799,8 @@ static char *ip4_addr_string(char *buf, char *end, const u8 *addr,
  *
  * - 'F' For symbolic function descriptor pointers with offset
  * - 'f' For simple symbolic function names without offset
- * - 'S' For symbolic direct pointers
+ * - 'S' For symbolic direct pointers with offset
+ * - 's' For symbolic direct pointers without offset
  * - 'R' For a struct resource pointer, it prints the range of
  *       addresses (not the name nor the flags)
  * - 'M' For a 6-byte MAC address, it prints the address in the
@@ -827,6 +828,7 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
        case 'F':
        case 'f':
                ptr = dereference_function_descriptor(ptr);
+       case 's':
                /* Fallthrough */
        case 'S':
                return symbol_string(buf, end, ptr, spec, *fmt);
@@ -1068,10 +1070,12 @@ qualifier:
  * @args: Arguments for the format string
  *
  * This function follows C99 vsnprintf, but has some extensions:
- * %pS output the name of a text symbol
+ * %pS output the name of a text symbol with offset
+ * %ps output the name of a text symbol without offset
  * %pF output the name of a function pointer with its offset
  * %pf output the name of a function pointer without its offset
  * %pR output the address range in a struct resource
+ * %n is ignored
  *
  * The return value is the number of characters which would
  * be generated for the given input, excluding the trailing
@@ -1093,13 +1097,8 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 
        /* Reject out-of-range values early.  Large positive sizes are
           used for unknown buffer sizes. */
-       if (unlikely((int) size < 0)) {
-               /* There can be only one.. */
-               static char warn = 1;
-               WARN_ON(warn);
-               warn = 0;
+       if (WARN_ON_ONCE((int) size < 0))
                return 0;
-       }
 
        str = buf;
        end = buf + size;
@@ -1527,11 +1526,7 @@ EXPORT_SYMBOL_GPL(vbin_printf);
  * a binary buffer that generated by vbin_printf.
  *
  * The format follows C99 vsnprintf, but has some extensions:
- * %pS output the name of a text symbol
- * %pF output the name of a function pointer with its offset
- * %pf output the name of a function pointer without its offset
- * %pR output the address range in a struct resource
- * %n is ignored
+ *  see vsnprintf comment for details.
  *
  * The return value is the number of characters which would
  * be generated for the given input, excluding the trailing
@@ -1549,13 +1544,8 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
 
        struct printf_spec spec = {0};
 
-       if (unlikely((int) size < 0)) {
-               /* There can be only one.. */
-               static char warn = 1;
-               WARN_ON(warn);
-               warn = 0;
+       if (WARN_ON_ONCE((int) size < 0))
                return 0;
-       }
 
        str = buf;
        end = buf + size;
@@ -1781,7 +1771,7 @@ int vsscanf(const char * buf, const char * fmt, va_list args)
                 * advance both strings to next white space
                 */
                if (*fmt == '*') {
-                       while (!isspace(*fmt) && *fmt)
+                       while (!isspace(*fmt) && *fmt != '%' && *fmt)
                                fmt++;
                        while (!isspace(*str) && *str)
                                str++;