acct - 切換或關閉進程記帳
#include <unistd.h> int acct(const char *filename); |
與現有的檔案名作為引數呼叫時，占被開啟，每個終止的進程的記錄，被追加到檔案名作為終止。引數為NULL 引起占用被關閉。
成功則返回0。錯誤則返回-1，errno 設定為合適。
| 標籤 | 描述 |
|---|---|
| EACCES | Write permission is denied for the specified file, or search permission is denied for one of the directories in the path prefix of filename (see also path_resolution(2)), or filename is not a regular file. |
| EFAULT | filename points outside your accessible address space. |
| EIO | Error writing to the file filename. |
| EISDIR | filename is a directory. |
| ELOOP | Too many symbolic links were encountered in resolving filename. |
| ENAMETOOLONG | filename was too long. |
| ENFILE | The system limit on the total number of open files has been reached. |
| ENOENT | The specified filename does not exist. |
| ENOMEM | Out of memory. |
| ENOSYS | BSD process accounting has not been enabled when the operating system kernel was compiled. The kernel configuration parameter controlling this feature is CONFIG_BSD_PROCESS_ACCT. |
| ENOTDIR | A component used as a directory in filename is not in fact a directory. |
| EPERM | The calling process has insufficient privilege to enable process accounting. On Linux the CAP_SYS_PACCT capability is required. |
| EROFS | filename refers to a file on a read-only file system. |
| EUSERS | There are no more free file structures or we ran out of memory. |
SVr4, 4.3BSD (but not POSIX).
沒有賬號產生的程式執行時發生崩潰。特別是無窮的過程從來沒有賬號。