57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
#include <mailboxes.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ipc/vfs.h>
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#include <stdio.h>
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#include <tasking.h>
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#define VFS_PID 1
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static uint32_t box;
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void __stdio_init() {
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box=mailbox_new(16);
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}
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static vfs_message* make_msg(vfs_message_type type, char* mode, char* path) {
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static uint32_t id=0;
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vfs_message* msg_data=malloc(sizeof(vfs_message));
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msg_data->type=type;
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msg_data->id=id;
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id++;
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strcpy(&msg_data->mode[0],mode);
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strcpy(&msg_data->path[0],path);
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return msg_data;
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}
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FILE* fopen(char* filename,char* mode) {
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if (strlen(filename)>4096 || strlen(mode)>10) {
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return NULL;
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}
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vfs_message* msg_data=make_msg(VFS_OPEN,mode,filename);
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Message msg;
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msg.from=box;
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msg.to=VFS_PID;
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msg.msg=msg_data;
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msg.size=sizeof(vfs_message);
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mailbox_send_msg(&msg);
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free(msg.msg);
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yield();
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msg.msg=malloc(sizeof(vfs_message));
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mailbox_get_msg(box,&msg,sizeof(vfs_message));
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while (msg.from==0) {
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yield();
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mailbox_get_msg(box,&msg,sizeof(vfs_message));
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}
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vfs_message* vfs_msg=(vfs_message*)msg.msg;
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if (vfs_msg->flags) {
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free(msg.msg);
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return NULL;
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} else {
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FILE* file=malloc(sizeof(FILE));
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*file=vfs_msg->fd; //We're using pointers to FILE even though it's a uint32_t so we can expand to a struct if needed
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free(msg.msg);
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return file;
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}
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}
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