Allow per-vdisk cache adjusting settings.
Also, move vdisk_functions callback structure to vdisk.c.
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728172f401
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cea3923666
@ -111,7 +111,7 @@ typedef struct {
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int (*read)(void *userdata, void *buffer, off_t startsector, size_t *numsectors) __attribute__((__stdcall__));
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int (*write)(void *userdata, void *buffer, off_t startsector, size_t *numsectors) __attribute__((__stdcall__));
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int (*flush)(void *userdata) __attribute__((__stdcall__));
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unsigned int (*adjust_cache_size)(void *userdata, uint32_t suggested_size) __attribute__((__stdcall__));
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unsigned int (*adjust_cache_size)(void *userdata, size_t suggested_size) __attribute__((__stdcall__));
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} diskfunc_t;
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struct disk_t {
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13
umka_fuse.c
13
umka_fuse.c
@ -123,24 +123,13 @@ static struct fuse_operations umka_oper = {
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.read = umka_read,
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};
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diskfunc_t vdisk_functions = {
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.strucsize = sizeof(diskfunc_t),
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.close = vdisk_close,
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.closemedia = NULL,
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.querymedia = vdisk_querymedia,
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.read = vdisk_read,
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.write = vdisk_write,
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.flush = NULL,
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.adjust_cache_size = NULL,
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};
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int main(int argc, char *argv[]) {
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if (argc != 3) {
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printf("usage: umka_fuse dir img\n");
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exit(1);
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}
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kos_init();
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void *userdata = vdisk_init(argv[2], 0u);
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void *userdata = vdisk_init(argv[2], 1, 0u);
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void *vdisk = disk_add(&vdisk_functions, "hd0", userdata, 0);
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disk_media_changed(vdisk, 1);
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return fuse_main(argc-1, argv, &umka_oper, NULL);
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18
umka_shell.c
18
umka_shell.c
@ -50,17 +50,6 @@
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#define DEFAULT_READDIR_ENCODING UTF8
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#define DEFAULT_PATH_ENCODING UTF8
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diskfunc_t vdisk_functions = {
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.strucsize = sizeof(diskfunc_t),
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.close = vdisk_close,
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.closemedia = NULL,
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.querymedia = vdisk_querymedia,
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.read = vdisk_read,
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.write = vdisk_write,
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.flush = NULL,
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.adjust_cache_size = NULL,
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};
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net_device_t vnet = {
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.device_type = NET_TYPE_ETH,
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.mtu = 1514,
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@ -275,7 +264,8 @@ void shell_disk_add(int argc, char **argv) {
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puts(usage);
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return;
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}
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unsigned cache_size = 0u;
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size_t cache_size = 0;
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int adjust_cache_size = 0;
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int opt;
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optind = 1;
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const char *file_name = argv[optind++];
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@ -284,7 +274,7 @@ void shell_disk_add(int argc, char **argv) {
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switch (opt) {
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case 'c':
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cache_size = strtoul(optarg, NULL, 0);
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vdisk_functions.adjust_cache_size = vdisk_adjust_cache_size;
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adjust_cache_size = 1;
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break;
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default:
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puts(usage);
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@ -292,7 +282,7 @@ void shell_disk_add(int argc, char **argv) {
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}
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}
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void *userdata = vdisk_init(file_name, cache_size);
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void *userdata = vdisk_init(file_name, adjust_cache_size, cache_size);
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if (userdata) {
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COVERAGE_ON();
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void *vdisk = disk_add(&vdisk_functions, disk_name, userdata, 0);
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26
vdisk.c
26
vdisk.c
@ -5,15 +5,17 @@
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#include <errno.h>
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#include "kolibri.h"
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#include "trace.h"
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#include "vdisk.h"
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typedef struct {
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FILE *file;
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uint32_t sect_size;
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uint64_t sect_cnt;
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unsigned cache_size;
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int adjust_cache_size;
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} vdisk_t;
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void *vdisk_init(const char *fname, unsigned cache_size) {
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void *vdisk_init(const char *fname, int adjust_cache_size, size_t cache_size) {
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FILE *f = fopen(fname, "r+");
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if (!f) {
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printf("vdisk: can't open file '%s': %s\n", fname, strerror(errno));
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@ -30,7 +32,8 @@ void *vdisk_init(const char *fname, unsigned cache_size) {
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*vdisk = (vdisk_t){.file = f,
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.sect_size = sect_size,
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.sect_cnt = (uint64_t)fsize / sect_size,
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.cache_size = cache_size};
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.cache_size = cache_size,
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.adjust_cache_size = adjust_cache_size};
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return vdisk;
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}
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@ -77,7 +80,22 @@ int vdisk_querymedia(void *userdata, diskmediainfo_t *minfo) {
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}
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__attribute__((__stdcall__))
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unsigned vdisk_adjust_cache_size(vdisk_t *vdisk, unsigned suggested_size) {
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(void)suggested_size;
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size_t vdisk_adjust_cache_size(void *userdata, size_t suggested_size) {
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vdisk_t *vdisk = userdata;
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if (vdisk->adjust_cache_size) {
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return vdisk->cache_size;
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} else {
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return suggested_size;
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}
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}
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diskfunc_t vdisk_functions = {
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.strucsize = sizeof(diskfunc_t),
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.close = vdisk_close,
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.closemedia = NULL,
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.querymedia = vdisk_querymedia,
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.read = vdisk_read,
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.write = vdisk_write,
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.flush = NULL,
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.adjust_cache_size = vdisk_adjust_cache_size,
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};
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4
vdisk.h
4
vdisk.h
@ -5,7 +5,7 @@
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#include <inttypes.h>
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#include "kolibri.h"
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void *vdisk_init(const char *fname, unsigned cache_size);
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void *vdisk_init(const char *fname, int adjust_cache_size, size_t cache_size);
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__attribute__((__stdcall__))
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void vdisk_close(void *userdata);
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@ -24,4 +24,6 @@ int vdisk_querymedia(void *userdata, diskmediainfo_t *minfo);
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__attribute__((__stdcall__))
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unsigned int vdisk_adjust_cache_size(void *userdata, unsigned suggested_size);
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extern diskfunc_t vdisk_functions;
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#endif // VDISK_H_INCLUDED
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