120 lines
2.7 KiB
C
120 lines
2.7 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/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/misc.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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char *fs_get_label(struct volume *part) {
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char *ret;
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if ((ret = fat32_get_label(part)) != NULL) {
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return ret;
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}
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if ((ret = ext2_get_label(part)) != NULL) {
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return ret;
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}
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return NULL;
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}
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bool fs_get_guid(struct guid *guid, struct volume *part) {
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if (ext2_get_guid(guid, part) == true) {
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return true;
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}
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return false;
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}
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bool case_insensitive_fopen = false;
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struct file_handle *fopen(struct volume *part, const char *filename) {
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size_t filename_new_len = strlen(filename) + 2;
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char *filename_new = ext_mem_alloc(filename_new_len);
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if (filename[0] != '/') {
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filename_new[0] = '/';
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strcpy(&filename_new[1], filename);
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} else {
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strcpy(filename_new, filename);
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}
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filename = filename_new;
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struct file_handle *ret;
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if (part->pxe) {
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if ((ret = tftp_open(part, "", filename)) == NULL) {
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return NULL;
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}
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return ret;
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}
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if ((ret = ext2_open(part, filename)) != NULL) {
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goto success;
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}
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if ((ret = iso9660_open(part, filename)) != NULL) {
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goto success;
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}
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if ((ret = fat32_open(part, filename)) != NULL) {
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goto success;
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}
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return NULL;
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success:
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ret->path = (char *)filename;
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ret->path_len = filename_new_len;
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return ret;
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}
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void fclose(struct file_handle *fd) {
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if (fd->is_memfile) {
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if (fd->readall == false) {
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pmm_free(fd->fd, fd->size);
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}
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} else {
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fd->close(fd);
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}
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pmm_free(fd->path, fd->path_len);
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pmm_free(fd, sizeof(struct file_handle));
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}
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void 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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} else {
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fd->read(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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return freadall_mode(fd, type, false);
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}
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void *freadall_mode(struct file_handle *fd, uint32_t type, bool allow_high_allocs) {
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if (fd->is_memfile) {
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if (fd->readall) {
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return fd->fd;
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}
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memmap_alloc_range((uint64_t)(size_t)fd->fd, ALIGN_UP(fd->size, 4096), type, 0, true, false, false);
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fd->readall = true;
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return fd->fd;
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} else {
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void *ret = ext_mem_alloc_type_aligned_mode(fd->size, type, 4096, allow_high_allocs);
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fd->read(fd, ret, 0, fd->size);
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fd->close(fd);
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fd->fd = ret;
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fd->readall = true;
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fd->is_memfile = true;
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return ret;
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}
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}
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