projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * arch/s390/kernel/cpcmd.h | |
| 3 | * | |
| 4 | * S390 version | |
| 5 | * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation | |
| 6 | * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), | |
| 7 | * Christian Borntraeger (cborntra@de.ibm.com), | |
| 8 | */ | |
| 9 | ||
| 740b5706 HC |
10 | #ifndef _ASM_S390_CPCMD_H |
| 11 | #define _ASM_S390_CPCMD_H | |
| 1da177e4 LT |
12 | |
| 13 | /* | |
| 6b979de3 | 14 | * the lowlevel function for cpcmd |
| 1da177e4 LT |
15 | * the caller of __cpcmd has to ensure that the response buffer is below 2 GB |
| 16 | */ | |
| 6b979de3 | 17 | extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code); |
| 1da177e4 | 18 | |
| 6b979de3 CB |
19 | /* |
| 20 | * cpcmd is the in-kernel interface for issuing CP commands | |
| 21 | * | |
| 22 | * cmd: null-terminated command string, max 240 characters | |
| 23 | * response: response buffer for VM's textual response | |
| 24 | * rlen: size of the response buffer, cpcmd will not exceed this size | |
| 25 | * but will cap the output, if its too large. Everything that | |
| 26 | * did not fit into the buffer will be silently dropped | |
| 27 | * response_code: return pointer for VM's error code | |
| 28 | * return value: the size of the response. The caller can check if the buffer | |
| 29 | * was large enough by comparing the return value and rlen | |
| 30 | * NOTE: If the response buffer is not below 2 GB, cpcmd can sleep | |
| 31 | */ | |
| 32 | extern int cpcmd(const char *cmd, char *response, int rlen, int *response_code); | |
| 1da177e4 | 33 | |
| 740b5706 | 34 | #endif /* _ASM_S390_CPCMD_H */ |