KolibriOS/umka
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Allow per-vdisk cache adjusting settings.

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Also, move vdisk_functions callback structure to vdisk.c.
This commit is contained in:
Ivan B
2020-05-07 04:41:08 +03:00
parent 728172f401
commit cea3923666
5 changed files with 32 additions and 33 deletions
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28
vdisk.c
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@@ -5,15 +5,17 @@
#include <errno.h>
#include "kolibri.h"
#include "trace.h"
#include "vdisk.h"
typedef struct {
FILE *file;
uint32_t sect_size;
uint64_t sect_cnt;
unsigned cache_size;
int adjust_cache_size;
} vdisk_t;
void *vdisk_init(const char *fname, unsigned cache_size) {
void *vdisk_init(const char *fname, int adjust_cache_size, size_t cache_size) {
FILE *f = fopen(fname, "r+");
if (!f) {
printf("vdisk: can't open file '%s': %s\n", fname, strerror(errno));
@@ -30,7 +32,8 @@ void *vdisk_init(const char *fname, unsigned cache_size) {
*vdisk = (vdisk_t){.file = f,
.sect_size = sect_size,
.sect_cnt = (uint64_t)fsize / sect_size,
.cache_size = cache_size};
.cache_size = cache_size,
.adjust_cache_size = adjust_cache_size};
return vdisk;
}
@@ -77,7 +80,22 @@ int vdisk_querymedia(void *userdata, diskmediainfo_t *minfo) {
}
__attribute__((__stdcall__))
unsigned vdisk_adjust_cache_size(vdisk_t *vdisk, unsigned suggested_size) {
(void)suggested_size;
return vdisk->cache_size;
size_t vdisk_adjust_cache_size(void *userdata, size_t suggested_size) {
vdisk_t *vdisk = userdata;
if (vdisk->adjust_cache_size) {
return vdisk->cache_size;
} else {
return suggested_size;
}
}
diskfunc_t vdisk_functions = {
.strucsize = sizeof(diskfunc_t),
.close = vdisk_close,
.closemedia = NULL,
.querymedia = vdisk_querymedia,
.read = vdisk_read,
.write = vdisk_write,
.flush = NULL,
.adjust_cache_size = vdisk_adjust_cache_size,
};