void
serve_open(u_int envid, struct Fsreq_open *rq)
{
writef("serve_open %08x %x 0x%x\n", envid, (int)rq->req_path, rq->req_omode);
u_char path[MAXPATHLEN];
struct File *f;
struct Filefd *ff;
int fileid;
int r;
struct Open *o;
// Copy in the path, making sure it's null-terminated
user_bcopy(rq->req_path, path, MAXPATHLEN);
path[MAXPATHLEN - 1] = 0;
//writef("serve_open:enter open %s\n",rq->req_path);
// Find a file id.
if ((r = open_alloc(&o)) < 0) {
writef("open_alloc failed: %d", r);
goto out;
}
fileid = r;
//writef("serve_open:ending find a file id o = %x\n",o);
// Open the file.
if ((r = file_open((char *)path, &f)) < 0) {
writef("file_open failed: %e", r);
goto out;
}
//writef("serve_open:ending open the file\n");
// Save the file pointer.
o->o_file = f;
// Fill out the Filefd structure
ff = (struct Filefd *)o->o_ff;
ff->f_file = *f;
ff->f_fileid = o->o_fileid;
o->o_mode = rq->req_omode;
ff->f_fd.fd_omode = o->o_mode;
ff->f_fd.fd_dev_id = devfile.dev_id;
//writef("serve_open:will to ipc send\n");
if (debug) {
writef("sending success, page %08x\n", (u_int)o->o_ff);
}
ipc_send(envid, 0, (u_int)o->o_ff, PTE_V | PTE_R | PTE_LIBRARY);
//writef("serve_open:end of open %s\n",rq->req_path);
return;
out:
user_panic("*********************path:%s", path);
ipc_send(envid, r, 0, 0);
}
int
cons_write(struct Fd *fd, const void *vbuf, u_int n, u_int offset)
{
int tot, m;
char buf[128];
USED(offset);
// mistake: have to nul-terminate arg to syscall_cputs,
// so we have to copy vbuf into buf in chunks and nul-terminate.
for(tot=0; tot<n; tot+=m) {
m = n - tot;
if (m > sizeof buf-1)
m = sizeof buf-1;
user_bcopy((char*)vbuf+tot, buf, m);
buf[m] = 0;
writef("%s",buf);
}
return tot;
}
void
serve_remove(u_int envid, struct Fsreq_remove *rq)
{
if (debug) {
writef("serve_map %08x %s\n", envid, rq->req_path);
}
// Your code here
int r;
u_char path[MAXPATHLEN];
// Copy in the path, making sure it's null-terminated
user_bcopy(rq->req_path, path, MAXPATHLEN);
path[MAXPATHLEN - 1] = 0;
if ((r = file_remove((char *)path)) < 0) {
ipc_send(envid, r, 0, 0);
return;
}
ipc_send(envid, 0, 0, 0);//PTE_V);
// user_panic("serve_remove not implemented");
}
