sdjournal: use C constant for SD_ID128_STRING_MAX

lucab · lucab · commit a3292d2e43c8 · 2021-03-12T16:06:42.000Z
diff --git a/sdjournal/journal.go b/sdjournal/journal.go
@@ -1155,7 +1155,8 @@ func (j *Journal) GetBootID() (string, error) {
 		return "", err
 	}
 
-	c := (*C.char)(C.malloc(33))
+	id128StringMax := C.ulong(C.SD_ID128_STRING_MAX)
+	c := (*C.char)(C.malloc(id128StringMax))
 	defer C.free(unsafe.Pointer(c))
 	C.my_sd_id128_to_string(sd_id128_to_string, boot_id, c)
 

Original file line number	Diff line number	Diff line change
`@@ -1155,7 +1155,8 @@ func (j *Journal) GetBootID() (string, error) {`
`1155`	`1155`	`return "", err`
`1156`	`1156`	`}`
`1157`	`1157`
`1158`		`- c := (*C.char)(C.malloc(33))`
	`1158`	`+ id128StringMax := C.ulong(C.SD_ID128_STRING_MAX)`
	`1159`	`+ c := (*C.char)(C.malloc(id128StringMax))`
`1159`	`1160`	`defer C.free(unsafe.Pointer(c))`
`1160`	`1161`	`C.my_sd_id128_to_string(sd_id128_to_string, boot_id, c)`
`1161`	`1162`