1# Native API Symbols That May Fail to Call Due to Permission Control 2 3Before using the following interfaces, ensure that the application entity has the corresponding permission. 4 5| Symbol| Possible Cause| 6| --- | --- | 7| mlockall | usr namespace isolation or lack of CAP_IPC_LOCK privilege | 8| swapon | usr namespace isolation | 9| swapoff | usr namespace isolation | 10| stime | usr namespace isolation or lack of CAP_SYS_TIME privilege | 11| settimeofday | usr namespace isolation or lack of CAP_SYS_TIME privilege | 12| adjtime | usr namespace isolation or lack of CAP_SYS_TIME privilege | 13| clock_settime | usr namespace isolation or lack of CAP_SYS_TIME privilege | 14| klogctl | usr namespace isolation or lack of CAP_SYS_ADMIN/CAP_SYSLOG privilege | 15