s390_sthyi(2) System Calls Manual s390_sthyi(2) s390_sthyi - STHYI (libc -lc) #include /* Definition of STHYI_* constants */ #include /* Definition of SYS_* constants */ #include int syscall(SYS_s390_sthyi, unsigned long function_code, void *resp_buffer, uint64_t *return_code, unsigned long flags); : glibc s390_sthyi() syscall(2). s390_sthyi() STHYI ( ). . . function_code . : STHYI_FC_CP_IFL_CAP CP ( ) IFL ( ). resp_buffer . function_code STHYI_FC_CP_IFL_CAP (4K). 0 . . return_code STHYI : 0 . 4 . return_code function_code resp_buffer . flags 0. (: ) s390_sthyi() STHYI [0..3]. 0 *resp_buffer. 3 " " *resp_buffer . 1 2 . -1 errno . EFAULT resp_buffer return_code . EINVAL flags . ENOMEM . EOPNOTSUPP function_code . s390. 4.15. STHYI . STHYI. ( 4.16). . syscall(2) 3 . . : . 6.18 8 2026 s390_sthyi(2)