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-rw-r--r--lib/vsprintf.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index b8a2f549ab0e..4ee19d0d3910 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -980,6 +980,11 @@ char *uuid_string(char *buf, char *end, const u8 *addr,
980 * [0][1][2][3]-[4][5]-[6][7]-[8][9]-[10][11][12][13][14][15] 980 * [0][1][2][3]-[4][5]-[6][7]-[8][9]-[10][11][12][13][14][15]
981 * little endian output byte order is: 981 * little endian output byte order is:
982 * [3][2][1][0]-[5][4]-[7][6]-[8][9]-[10][11][12][13][14][15] 982 * [3][2][1][0]-[5][4]-[7][6]-[8][9]-[10][11][12][13][14][15]
983 * - 'V' For a struct va_format which contains a format string * and va_list *,
984 * call vsnprintf(->format, *->va_list).
985 * Implements a "recursive vsnprintf".
986 * Do not use this feature without some mechanism to verify the
987 * correctness of the format string and va_list arguments.
983 * 988 *
984 * Note: The difference between 'S' and 'F' is that on ia64 and ppc64 989 * Note: The difference between 'S' and 'F' is that on ia64 and ppc64
985 * function pointers are really function descriptors, which contain a 990 * function pointers are really function descriptors, which contain a
@@ -1025,6 +1030,10 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
1025 break; 1030 break;
1026 case 'U': 1031 case 'U':
1027 return uuid_string(buf, end, ptr, spec, fmt); 1032 return uuid_string(buf, end, ptr, spec, fmt);
1033 case 'V':
1034 return buf + vsnprintf(buf, end - buf,
1035 ((struct va_format *)ptr)->fmt,
1036 *(((struct va_format *)ptr)->va));
1028 } 1037 }
1029 spec.flags |= SMALL; 1038 spec.flags |= SMALL;
1030 if (spec.field_width == -1) { 1039 if (spec.field_width == -1) {