fastfetch-cli/fastfetch
1
0
Fork 0
mirror of https://github.com/fastfetch-cli/fastfetch.git synced 2026-10-30 09:33:39 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity

Common (Sysctl): handle varying data lengths in integer retrieval functions

Browse Source
This commit is contained in:
李通洲
2026-08-25 23:24:31 +08:00
committed by Carter Li
parent d8ef56c3b3
commit ff1ecb4166
1 changed files with 49 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/common/impl/sysctl.c
+49 -8
View File
@@ -1,6 +1,7 @@
#include "common/sysctl.h"
#include <stdlib.h>
#include <stdalign.h>
#ifdef __OpenBSD__
const char* ffSysctlGetString(int mib1, int mib2, FFstrbuf* result) {
@@ -22,21 +23,41 @@ const char* ffSysctlGetString(int mib1, int mib2, FFstrbuf* result) {
}
int ffSysctlGetInt(int mib1, int mib2, int defaultValue) {
int result;
alignas(int) uint8_t result[sizeof(int)];
size_t neededLength = sizeof(result);
if (sysctl((int[]) { mib1, mib2 }, 2, &result, &neededLength, NULL, 0) != 0) {
return defaultValue;
}
return result;
switch (neededLength) {
case sizeof(int32_t):
return *(int32_t*)result;
case sizeof(int16_t):
return *(int16_t*)result;
case sizeof(int8_t):
return *(int8_t*)result;
default:
return defaultValue;
}
}
int64_t ffSysctlGetInt64(int mib1, int mib2, int64_t defaultValue) {
int64_t result;
alignas(int64_t) uint8_t result[sizeof(int64_t)];
size_t neededLength = sizeof(result);
if (sysctl((int[]) { mib1, mib2 }, 2, &result, &neededLength, NULL, 0) != 0) {
return defaultValue;
}
return result;
switch (neededLength) {
case sizeof(int64_t):
return *(int64_t*)result;
case sizeof(int32_t):
return *(int32_t*)result;
case sizeof(int16_t):
return *(int16_t*)result;
case sizeof(int8_t):
return *(int8_t*)result;
default:
return defaultValue;
}
}
#else
const char* ffSysctlGetString(const char* propName, FFstrbuf* result) {
@@ -59,21 +80,41 @@ const char* ffSysctlGetString(const char* propName, FFstrbuf* result) {
}
int ffSysctlGetInt(const char* propName, int defaultValue) {
int result;
alignas(int) uint8_t result[sizeof(int)];
size_t neededLength = sizeof(result);
if (sysctlbyname(propName, &result, &neededLength, NULL, 0) != 0) {
return defaultValue;
}
return result;
switch (neededLength) {
case sizeof(int32_t):
return *(int32_t*)result;
case sizeof(int16_t):
return *(int16_t*)result;
case sizeof(int8_t):
return *(int8_t*)result;
default:
return defaultValue;
}
}
int64_t ffSysctlGetInt64(const char* propName, int64_t defaultValue) {
int64_t result;
alignas(int64_t) uint8_t result[sizeof(int64_t)];
size_t neededLength = sizeof(result);
if (sysctlbyname(propName, &result, &neededLength, NULL, 0) != 0) {
return defaultValue;
}
return result;
switch (neededLength) {
case sizeof(int64_t):
return *(int64_t*)result;
case sizeof(int32_t):
return *(int32_t*)result;
case sizeof(int16_t):
return *(int16_t*)result;
case sizeof(int8_t):
return *(int8_t*)result;
default:
return defaultValue;
}
}
#endif // OpenBSD