126 lines
3.0 KiB
C
126 lines
3.0 KiB
C
#include <stddef.h>
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#include <stdint.h>
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#include <fs/file.h>
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#include <fs/echfs.h>
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#include <fs/ext2.h>
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#include <fs/fat32.h>
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#include <fs/iso9660.h>
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#include <lib/print.h>
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#include <lib/blib.h>
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#include <mm/pmm.h>
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#include <lib/part.h>
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#include <lib/libc.h>
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#include <pxe/tftp.h>
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bool fs_get_guid(struct guid *guid, struct volume *part) {
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if (echfs_check_signature(part)) {
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return echfs_get_guid(guid, part);
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}
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if (ext2_check_signature(part)) {
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return ext2_get_guid(guid, part);
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}
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return false;
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}
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int fopen(struct file_handle *ret, struct volume *part, const char *filename) {
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ret->is_memfile = false;
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#if defined (bios)
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if (part->pxe) {
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struct tftp_file_handle *fd = ext_mem_alloc(sizeof(struct tftp_file_handle));
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int r = tftp_open(fd, 0, 69, filename);
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if (r)
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return r;
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ret->fd = (void *)fd;
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ret->read = (void *)tftp_read;
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ret->size = fd->file_size;
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return 0;
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}
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#endif
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if (iso9660_check_signature(part)) {
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struct iso9660_file_handle *fd = ext_mem_alloc(sizeof(struct iso9660_file_handle));
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int r = iso9660_open(fd, part, filename);
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if (r)
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return r;
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ret->fd = (void *)fd;
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ret->read = (void *)iso9660_read;
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ret->size = fd->size;
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return 0;
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}
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if (echfs_check_signature(part)) {
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struct echfs_file_handle *fd = ext_mem_alloc(sizeof(struct echfs_file_handle));
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int r = echfs_open(fd, part, filename);
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if (r)
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return r;
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ret->fd = (void *)fd;
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ret->read = (void *)echfs_read;
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ret->size = fd->dir_entry.size;
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return 0;
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}
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if (ext2_check_signature(part)) {
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struct ext2_file_handle *fd = ext_mem_alloc(sizeof(struct ext2_file_handle));
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int r = ext2_open(fd, part, filename);
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if (r)
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return r;
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ret->fd = (void *)fd;
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ret->read = (void *)ext2_read;
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ret->size = fd->size;
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return 0;
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}
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if (fat32_check_signature(part)) {
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struct fat32_file_handle *fd = ext_mem_alloc(sizeof(struct fat32_file_handle));
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int r = fat32_open(fd, part, filename);
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if (r)
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return r;
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ret->fd = (void *)fd;
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ret->read = (void *)fat32_read;
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ret->size = fd->size_bytes;
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return 0;
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}
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return -1;
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}
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int fread(struct file_handle *fd, void *buf, uint64_t loc, uint64_t count) {
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if (fd->is_memfile) {
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memcpy(buf, fd->fd + loc, count);
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return 0;
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} else {
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return fd->read(fd->fd, buf, loc, count);
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}
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}
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void *freadall(struct file_handle *fd, uint32_t type) {
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if (fd->is_memfile) {
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memmap_alloc_range((uint64_t)(size_t)fd->fd, fd->size, type, false, true, false);
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return fd->fd;
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} else {
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void *ret = ext_mem_alloc_aligned_type(fd->size, 4096, type);
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if (fd->read(fd->fd, ret, 0, fd->size)) {
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panic("freadall error");
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}
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return ret;
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}
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}
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