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Volume-centric VFS implementation
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Kamil Kowalczyk
2026-02-25 08:53:54 +01:00
parent 62a6543dab
commit 704db2dfa4
26 changed files with 441 additions and 406 deletions
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29
kernel/fs/tarfs.c
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@@ -8,7 +8,7 @@
#include <libk/string.h>
#include <limine/requests.h>
#include <mm/liballoc.h>
#include <path.h>
#include <path_defs.h>
#include <status.h>
#include <sys/debug.h>
#include <xdrv_device.h>
@@ -16,7 +16,7 @@
static struct tar_file* tar_get_file (struct tarfs* tarfs, const char* filename) {
for (size_t i = 0; i < TARFS_FILES_MAX; i++) {
if ((tarfs->tarfs_files[i].header != NULL) &&
(strncmp (tarfs->tarfs_files[i].header->filename, filename, MAX_PATH) == 0))
(strncmp (tarfs->tarfs_files[i].header->filename, filename, PATH_MAX) == 0))
return &tarfs->tarfs_files[i];
}
return NULL;
@@ -54,8 +54,7 @@ static size_t tar_parse (struct tarfs* tarfs, uint8_t* addr) {
return i;
}
int tarfs_mount (struct vfs_mountpoint* mountpoint, struct proc* proc,
struct reschedule_ctx* rctx) {
int tarfs_mount (struct vfs_volume* volume, struct proc* proc, struct reschedule_ctx* rctx) {
struct tarfs* tarfs = malloc (sizeof (*tarfs));
if (tarfs == NULL)
@@ -63,9 +62,9 @@ int tarfs_mount (struct vfs_mountpoint* mountpoint, struct proc* proc,
memset (tarfs, 0, sizeof (*tarfs));
mountpoint->udata = tarfs;
volume->udata = tarfs;
struct device* back_device = mountpoint->back_device;
struct device* back_device = volume->back_device;
size_t total_size, sector_size;
int ret;
@@ -74,7 +73,7 @@ int tarfs_mount (struct vfs_mountpoint* mountpoint, struct proc* proc,
ret = back_device->ops[XDRV_GET_SIZE](back_device, proc, rctx, &total_size, NULL, NULL, NULL);
if (ret < 0) {
spin_unlock (&back_device->lock);
free (mountpoint->udata);
free (volume->udata);
return ret;
}
@@ -82,7 +81,7 @@ int tarfs_mount (struct vfs_mountpoint* mountpoint, struct proc* proc,
NULL);
if (ret < 0) {
spin_unlock (&back_device->lock);
free (mountpoint->udata);
free (volume->udata);
return ret;
}
@@ -90,7 +89,7 @@ int tarfs_mount (struct vfs_mountpoint* mountpoint, struct proc* proc,
if (buffer == NULL) {
spin_unlock (&back_device->lock);
free (mountpoint->udata);
free (volume->udata);
return ret;
}
@@ -114,15 +113,15 @@ int tarfs_mount (struct vfs_mountpoint* mountpoint, struct proc* proc,
return ret;
}
int tarfs_describe (struct vfs_mountpoint* mountpoint, const char* path, struct desc* desc) {
(void)mountpoint;
int tarfs_describe (struct vfs_volume* volume, const char* path, struct desc* desc) {
(void)volume;
const char* filename = path_basename (path);
if (filename == NULL)
return -ST_BAD_PATH;
struct tar_file* file = tar_get_file ((struct tarfs*)mountpoint->udata, filename);
struct tar_file* file = tar_get_file ((struct tarfs*)volume->udata, filename);
if (file == NULL)
return -ST_NOT_FOUND;
@@ -133,16 +132,16 @@ int tarfs_describe (struct vfs_mountpoint* mountpoint, const char* path, struct
return ST_OK;
}
int tarfs_read (struct vfs_mountpoint* mountpoint, const char* path, uint8_t* buffer, size_t off,
int tarfs_read (struct vfs_volume* volume, const char* path, uint8_t* buffer, size_t off,
size_t size) {
(void)mountpoint;
(void)volume;
const char* filename = path_basename (path);
if (filename == NULL)
return -ST_BAD_PATH;
struct tar_file* file = tar_get_file ((struct tarfs*)mountpoint->udata, filename);
struct tar_file* file = tar_get_file ((struct tarfs*)volume->udata, filename);
if (file == NULL)
return -ST_NOT_FOUND;