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dump_file hypercall: support mkstemps() template with suffix

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This commit is contained in:
Steffen Schulz 2021-09-20 09:32:18 +00:00
parent a572984289
commit 6b4661a758
1 changed files with 5 additions and 4 deletions
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9
nyx/hypercall/hypercall.c
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@ -749,12 +749,13 @@ static void handle_hypercall_kafl_dump_file(struct kvm_run *run, CPUState *cpu,
assert(asprintf(&host_path, "%s/dump/%s", GET_GLOBAL_STATE()->workdir_path , base_name) != -1); assert(asprintf(&host_path, "%s/dump/%s", GET_GLOBAL_STATE()->workdir_path , base_name) != -1);
// check if base_name is mkstemp() pattern, otherwise write/append to exact name // check if base_name is mkstemp() pattern, otherwise write/append to exact name
if (strlen(base_name) > 6 && 0 == strcmp(base_name+strlen(base_name)-6, "XXXXXX")) { char *pattern = strstr(base_name, "XXXXXX");
if (pattern) {
unsigned suffix = strlen(pattern) - strlen("XXXXXX");
f = fdopen(mkstemps(host_path, suffix), "w+");
if (file_obj.append) { if (file_obj.append) {
fprintf(stderr, "Error request to append but no filename given in %s\n", __func__); fprintf(stderr, "Warning in %s: Writing unique generated file in append mode?\n", __func__);
goto err_out1;
} }
f = fdopen(mkstemp(host_path), "w+");
} else { } else {
if (file_obj.append){ if (file_obj.append){
f = fopen(host_path, "a+"); f = fopen(host_path, "a+");