#include <sys/ubc_internal.h>
+#include <kern/ipc_misc.h>
+#include <vm/vm_protos.h>
+
+#include <mach/mach_port.h>
+
+kern_return_t ipc_object_copyin(ipc_space_t, mach_port_name_t,
+ mach_msg_type_name_t, ipc_port_t *);
+void ipc_port_release_send(ipc_port_t);
+
struct psemnode;
struct pshmnode;
void fg_drop(struct fileproc * fp);
void fg_free(struct fileglob *fg);
void fg_ref(struct fileproc * fp);
+#if CONFIG_EMBEDDED
+void fileport_releasefg(struct fileglob *fg);
+#endif /* CONFIG_EMBEDDED */
/* flags for close_internal_locked */
#define FD_DUP2RESV 1
break;
}
+ case F_GETPROTECTIONCLASS: {
+ // stub to make the API work
+ printf("Reached F_GETPROTECTIONCLASS, returning without action\n");
+ error = 0;
+ goto out;
+ }
+
+ case F_SETPROTECTIONCLASS: {
+ // stub to make the API work
+ printf("Reached F_SETPROTECTIONCLASS, returning without action\n");
+ error = 0;
+ goto out;
+ }
+
+
default:
/*
* This is an fcntl() that we d not recognize at this level;
}
+#if CONFIG_EMBEDDED
+/*
+ * fileport_makeport
+ *
+ * Description: Obtain a Mach send right for a given file descriptor.
+ *
+ * Parameters: p Process calling fileport
+ * uap->fd The fd to reference
+ * uap->portnamep User address at which to place port name.
+ *
+ * Returns: 0 Success.
+ * EBADF Bad file descriptor.
+ * EINVAL File descriptor had type that cannot be sent, misc. other errors.
+ * EFAULT Address at which to store port name is not valid.
+ * EAGAIN Resource shortage.
+ *
+ * Implicit returns:
+ * On success, name of send right is stored at user-specified address.
+ */
+int
+fileport_makeport(proc_t p, struct fileport_makeport_args *uap,
+ __unused int *retval)
+{
+ int err;
+ int fd = uap->fd;
+ user_addr_t user_portaddr = uap->portnamep;
+ struct fileproc *fp = FILEPROC_NULL;
+ struct fileglob *fg = NULL;
+ ipc_port_t fileport;
+ mach_port_name_t name = MACH_PORT_NULL;
+
+ err = fp_lookup(p, fd, &fp, 0);
+ if (err != 0) {
+ goto out;
+ }
+
+ if (!filetype_issendable(fp->f_type)) {
+ err = EINVAL;
+ goto out;
+ }
+
+ /* Dropped when port is deallocated */
+ fg = fp->f_fglob;
+ fg_ref(fp);
+
+ /* Allocate and initialize a port */
+ fileport = fileport_alloc(fg);
+ if (fileport == IPC_PORT_NULL) {
+ err = EAGAIN;
+ fg_drop(fp);
+ goto out;
+ }
+
+ /* Add an entry. Deallocates port on failure. */
+ name = ipc_port_copyout_send(fileport, get_task_ipcspace(p->task));
+ if (!MACH_PORT_VALID(name)) {
+ err = EINVAL;
+ goto out;
+ }
+
+ err = copyout(&name, user_portaddr, sizeof(mach_port_name_t));
+ if (err != 0) {
+ goto out;
+ }
+
+ /* Tag the fileglob for debugging purposes */
+ lck_mtx_lock_spin(&fg->fg_lock);
+ fg->fg_lflags |= FG_PORTMADE;
+ lck_mtx_unlock(&fg->fg_lock);
+
+ fp_drop(p, fd, fp, 0);
+
+ return 0;
+
+out:
+ if (MACH_PORT_VALID(name)) {
+ /* Don't care if another thread races us to deallocate the entry */
+ (void) mach_port_deallocate(get_task_ipcspace(p->task), name);
+ }
+
+ if (fp != FILEPROC_NULL) {
+ fp_drop(p, fd, fp, 0);
+ }
+
+ return err;
+}
+
+void
+fileport_releasefg(struct fileglob *fg)
+{
+ (void)closef_locked(NULL, fg, PROC_NULL);
+
+ return;
+}
+
+
+/*
+ * fileport_makefd
+ *
+ * Description: Obtain the file descriptor for a given Mach send right.
+ *
+ * Parameters: p Process calling fileport
+ * uap->port Name of send right to file port.
+ *
+ * Returns: 0 Success
+ * EINVAL Invalid Mach port name, or port is not for a file.
+ * fdalloc:EMFILE
+ * fdalloc:ENOMEM Unable to allocate fileproc or extend file table.
+ *
+ * Implicit returns:
+ * *retval (modified) The new descriptor
+ */
+int
+fileport_makefd(proc_t p, struct fileport_makefd_args *uap, int32_t *retval)
+{
+ struct fileglob *fg;
+ struct fileproc *fp = FILEPROC_NULL;
+ ipc_port_t port = IPC_PORT_NULL;
+ mach_port_name_t send = uap->port;
+ kern_return_t res;
+ int fd;
+ int err;
+
+ res = ipc_object_copyin(get_task_ipcspace(p->task),
+ send, MACH_MSG_TYPE_COPY_SEND, &port);
+
+ if (res != KERN_SUCCESS) {
+ err = EINVAL;
+ goto out;
+ }
+
+ fg = fileport_port_to_fileglob(port);
+ if (fg == NULL) {
+ err = EINVAL;
+ goto out;
+ }
+
+ MALLOC_ZONE(fp, struct fileproc *, sizeof(*fp), M_FILEPROC, M_WAITOK);
+ if (fp == FILEPROC_NULL) {
+ err = ENOMEM;
+ goto out;
+ }
+
+ bzero(fp, sizeof(*fp));
+
+ fp->f_fglob = fg;
+ fg_ref(fp);
+
+ proc_fdlock(p);
+ err = fdalloc(p, 0, &fd);
+ if (err != 0) {
+ proc_fdunlock(p);
+ goto out;
+ }
+
+ procfdtbl_releasefd(p, fd, fp);
+ proc_fdunlock(p);
+
+ *retval = fd;
+ err = 0;
+out:
+ if ((fp != NULL) && (0 != err)) {
+ FREE_ZONE(fp, sizeof(*fp), M_FILEPROC);
+ }
+
+ if (IPC_PORT_NULL != port) {
+ ipc_port_release_send(port);
+ }
+
+ return err;
+}
+#endif /* CONFIG_EMBEDDED */
+
+
/*
* dupfdopen
*
projects / apple / xnu.git / blobdiff