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/* * S390 version * Copyright IBM Corp. 1999 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), * Christian Borntraeger (cborntra@de.ibm.com), */ #ifndef _ASM_S390_CPCMD_H #define _ASM_S390_CPCMD_H /* * the lowlevel function for cpcmd * the caller of __cpcmd has to ensure that the response buffer is below 2 GB */ extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code); /* * cpcmd is the in-kernel interface for issuing CP commands * * cmd: null-terminated command string, max 240 characters * response: response buffer for VM's textual response * rlen: size of the response buffer, cpcmd will not exceed this size * but will cap the output, if its too large. Everything that * did not fit into the buffer will be silently dropped * response_code: return pointer for VM's error code * return value: the size of the response. The caller can check if the buffer * was large enough by comparing the return value and rlen * NOTE: If the response buffer is not below 2 GB, cpcmd can sleep */ extern int cpcmd(const char *cmd, char *response, int rlen, int *response_code); #endif /* _ASM_S390_CPCMD_H */