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Sysctl (OpenBSD): improves error messages

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李通洲
2026-04-02 20:05:47 +08:00
parent 299451ca62
commit ed4d903e69
1 changed files with 4 additions and 3 deletions
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src/common/impl/sysctl.c
+4 -3
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@@ -6,15 +6,16 @@
const char* ffSysctlGetString(int mib1, int mib2, FFstrbuf* result) {
size_t neededLength;
if (sysctl((int[]) { mib1, mib2 }, 2, NULL, &neededLength, NULL, 0) != 0 || neededLength == 1) { // neededLength is 1 for empty strings, because of the null terminator
return "sysctlbyname() failed";
return "sysctl() length query failed";
}
ffStrbufEnsureFree(result, (uint32_t) neededLength - 1);
if (sysctl((int[]) { mib1, mib2 }, 2, result->chars + result->length, &neededLength, NULL, 0) == 0) {
result->length += (uint32_t) neededLength - 1;
if (sysctl((int[]) { mib1, mib2 }, 2, result->chars + result->length, &neededLength, NULL, 0) != 0) {
return "sysctl() failed to retrieve string data";
}
result->length += (uint32_t) neededLength - 1;
result->chars[result->length] = '\0';
return NULL;