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/*
* ioconf: ioconf configuration file handling code
* Original code (C) 2004 by Red Hat (Charlie Bennett <ccb@redhat.com>)
*
* Modified and maintained by Sebastien GODARD (sysstat <at> orange.fr)
*/
#ifndef _IOCONF_H
#define _IOCONF_H
#include "sysconfig.h"
#define IOC_NAMELEN 31
#define IOC_DESCLEN 63
#define IOC_DEVLEN 47
#define IOC_MAXMINOR 2047
#define IOC_LINESIZ 255
#define IOC_FMTLEN 15
#ifndef MAX_BLKDEV
#define MAX_BLKDEV 255
#endif
#define K_NODEV "nodev"
#define IS_WHOLE(maj,min) ((min % ioconf[maj]->blkp->pcount) == 0)
/*
* When is C going to get templates?
*/
#define IOC_ALLOC(P,TYPE,SIZE) \
do { \
if (P == NULL) { \
P = (TYPE *) malloc(SIZE); \
if (P == NULL) { \
perror("malloc"); \
ioc_free(); \
return 0; \
} \
} \
} \
while (0)
/* That dummy while allows ';' on the line that invokes the macro... */
struct blk_config {
char name[IOC_NAMELEN + 1]; /* device basename */
char cfmt[IOC_FMTLEN + 1]; /* controller format string */
char dfmt[IOC_FMTLEN + 1]; /* disk format string */
char pfmt[IOC_FMTLEN + 1]; /* partition format string */
/* ctrlno is in the ioc_entry */
unsigned int ctrl_explicit; /* use "cN" in name */
unsigned int dcount; /* number of devices handled by this major */
unsigned int pcount; /* partitions per device */
char desc[IOC_DESCLEN + 1];
/* disk info unit # conversion function */
char *(*cconv)(unsigned int);
/* extension properties (all this for initrd?) */
char ext_name[IOC_NAMELEN + 1];
unsigned int ext; /* flag - this is an extension record */
unsigned int ext_minor; /* which minor does this apply to */
};
#define BLK_CONFIG_SIZE (sizeof(struct blk_config))
struct ioc_entry {
int live; /* is this a Direct entry? */
unsigned int ctrlno; /* controller number */
unsigned int basemajor; /* Major number of the template */
char *desc; /* (dynamic) per-controller description */
struct blk_config *blkp; /* the real info, may be a shared ref */
};
#define IOC_ENTRY_SIZE (sizeof(struct ioc_entry))
extern int ioc_iswhole(unsigned int, unsigned int);
extern char *ioc_name(unsigned int, unsigned int);
extern char *transform_devmapname(unsigned int, unsigned int);
#endif
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