| 1 | --- PRoot-5.1.0/src/tracee/mem.c 2014-12-15 15:18:11.000000000 +0100 |
| 2 | +++ src/src/tracee/mem.c 2016-03-20 10:37:46.288702967 +0100 |
| 3 | @@ -131,6 +131,9 @@ |
| 4 | /* Copy the bytes in the last word carefully since we have to |
| 5 | * overwrite only the relevant ones. */ |
| 6 | |
| 7 | + /* Clear errno so we won't detect previous syscall failure as ptrace one */ |
| 8 | + errno = 0; |
| 9 | + |
| 10 | word = ptrace(PTRACE_PEEKDATA, tracee->pid, dest + i, NULL); |
| 11 | if (errno != 0) { |
| 12 | note(tracee, WARNING, SYSTEM, "ptrace(PEEKDATA)"); |
| 13 | @@ -236,6 +239,9 @@ |
| 14 | nb_trailing_bytes = size % sizeof(word_t); |
| 15 | nb_full_words = (size - nb_trailing_bytes) / sizeof(word_t); |
| 16 | |
| 17 | + /* Clear errno so we won't detect previous syscall failure as ptrace one */ |
| 18 | + errno = 0; |
| 19 | + |
| 20 | /* Copy one word by one word, except for the last one. */ |
| 21 | for (i = 0; i < nb_full_words; i++) { |
| 22 | word = ptrace(PTRACE_PEEKDATA, tracee->pid, src + i, NULL); |
| 23 | @@ -366,6 +372,9 @@ |
| 24 | nb_trailing_bytes = max_size % sizeof(word_t); |
| 25 | nb_full_words = (max_size - nb_trailing_bytes) / sizeof(word_t); |
| 26 | |
| 27 | + /* Clear errno so we won't detect previous syscall failure as ptrace one */ |
| 28 | + errno = 0; |
| 29 | + |
| 30 | /* Copy one word by one word, except for the last one. */ |
| 31 | for (i = 0; i < nb_full_words; i++) { |
| 32 | word = ptrace(PTRACE_PEEKDATA, tracee->pid, src + i, NULL); |