| OLD | NEW |
| 1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | 1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| 2 * Use of this source code is governed by a BSD-style license that can be | 2 * Use of this source code is governed by a BSD-style license that can be |
| 3 * found in the LICENSE file. | 3 * found in the LICENSE file. |
| 4 * | 4 * |
| 5 * Stub implementations of utility functions which call their linux-specific | 5 * Stub implementations of utility functions which call their linux-specific |
| 6 * equivalents. | 6 * equivalents. |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 #include "stateful_util.h" | 9 #include "stateful_util.h" |
| 10 | 10 |
| 11 #include <stdarg.h> | 11 #include <stdarg.h> |
| 12 #include <stdio.h> | 12 #include <stdio.h> |
| 13 #include <stdlib.h> | 13 #include <stdlib.h> |
| 14 | 14 |
| 15 void* StatefulSkip(MemcpyState* state, uint64_t len) { |
| 16 if (state->overrun) |
| 17 return NULL; |
| 18 if (len > state->remaining_len) { |
| 19 state->overrun = 1; |
| 20 return NULL; |
| 21 } |
| 22 state->remaining_buf += len; |
| 23 state->remaining_len -= len; |
| 24 return state; // have to return something non-NULL |
| 25 } |
| 26 |
| 15 void* StatefulMemcpy(MemcpyState* state, void* dst, | 27 void* StatefulMemcpy(MemcpyState* state, void* dst, |
| 16 uint64_t len) { | 28 uint64_t len) { |
| 17 if (state->overrun) | 29 if (state->overrun) |
| 18 return NULL; | 30 return NULL; |
| 19 if (len > state->remaining_len) { | 31 if (len > state->remaining_len) { |
| 20 state->overrun = 1; | 32 state->overrun = 1; |
| 21 return NULL; | 33 return NULL; |
| 22 } | 34 } |
| 23 Memcpy(dst, state->remaining_buf, len); | 35 Memcpy(dst, state->remaining_buf, len); |
| 24 state->remaining_buf += len; | 36 state->remaining_buf += len; |
| (...skipping 21 matching lines...) Expand all Loading... |
| 46 return NULL; | 58 return NULL; |
| 47 if (len > state->remaining_len) { | 59 if (len > state->remaining_len) { |
| 48 state->overrun = 1; | 60 state->overrun = 1; |
| 49 return NULL; | 61 return NULL; |
| 50 } | 62 } |
| 51 Memset(state->remaining_buf, val, len); | 63 Memset(state->remaining_buf, val, len); |
| 52 state->remaining_buf += len; | 64 state->remaining_buf += len; |
| 53 state->remaining_len -= len; | 65 state->remaining_len -= len; |
| 54 return state; // have to return something non-NULL | 66 return state; // have to return something non-NULL |
| 55 } | 67 } |
| OLD | NEW |