3 * Copyright IBM Corp. 1999
4 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
5 * Christian Borntraeger (cborntra@de.ibm.com),
8 #ifndef _ASM_S390_CPCMD_H
9 #define _ASM_S390_CPCMD_H
12 * the lowlevel function for cpcmd
14 int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
17 * cpcmd is the in-kernel interface for issuing CP commands
19 * cmd: null-terminated command string, max 240 characters
20 * response: response buffer for VM's textual response
21 * rlen: size of the response buffer, cpcmd will not exceed this size
22 * but will cap the output, if its too large. Everything that
23 * did not fit into the buffer will be silently dropped
24 * response_code: return pointer for VM's error code
25 * return value: the size of the response. The caller can check if the buffer
26 * was large enough by comparing the return value and rlen
27 * NOTE: If the response buffer is not in real storage, cpcmd can sleep
29 int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
31 #endif /* _ASM_S390_CPCMD_H */