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This patch prevents code duplication in vmcp related programs. Some applications such as vmur, vmcp, and lsqeth use z/VM CP commands to query information. Each program uses its own defines and code. Supply a library and common header file to use common code. Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-by: Jan Höppner <hoeppner@linux.vnet.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* vmcp - z/VM CP command library
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*
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* Copyright IBM Corp. 2005, 2018
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef LIB_VMCP_H
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#define LIB_VMCP_H
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define VMCP_DEVICE_NODE "/dev/vmcp" /* VMCP device name */
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#define VMCP_DEFAULT_BUFSZ 0x4000 /* VMCP default buffer size */
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/*
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* Error codes returned by vmcp() function. This enables the caller
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* to emit a detailed error message on the type of failure.
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*/
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#define VMCP_SUCCESS 0 /* VMCP operation completed successfully */
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#define VMCP_ERR_OPEN (-1) /* Error Open of VMCP device */
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#define VMCP_ERR_SETBUF (-2) /* Error VMCP_SETBUF ioctl */
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#define VMCP_ERR_READ (-3) /* Error VMCP read system call */
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#define VMCP_ERR_GETCODE (-4) /* Error VMCP_GETCODE ioctl */
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#define VMCP_ERR_GETSIZE (-5) /* Error VMCP_GETSIZE ioctl */
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#define VMCP_ERR_TOOSMALL (-6) /* Error VMCP buffer too small for
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* response
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*/
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#define VMCP_ERR_WRITE (-7) /* Error VMCP write system call */
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struct vmcp_parm {
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const char *cpcmd;
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unsigned int buffer_size;
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bool do_upper;
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int cprc;
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char *response;
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unsigned int response_size;
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};
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int vmcp(struct vmcp_parm *cp);
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#ifdef __cplusplus
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}
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#endif
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#endif
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