diff options
Diffstat (limited to 'libmachdev/trivfs_server.c')
| -rw-r--r-- | libmachdev/trivfs_server.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/libmachdev/trivfs_server.c b/libmachdev/trivfs_server.c new file mode 100644 index 00000000..4565c3d7 --- /dev/null +++ b/libmachdev/trivfs_server.c @@ -0,0 +1,164 @@ +#include <stdio.h> +#include <fcntl.h> +#include <pciaccess.h> +#include <error.h> +#include <hurd/ports.h> +#include <hurd/trivfs.h> +#include <hurd.h> + +static struct port_bucket *port_bucket; + +/* Trivfs hooks. */ +int trivfs_fstype = FSTYPE_MISC; +int trivfs_fsid = 0; +int trivfs_support_read = 0; +int trivfs_support_write = 0; +int trivfs_support_exec = 0; +int trivfs_allow_open = O_READ | O_WRITE; + +struct port_class *trivfs_protid_portclasses[1]; +struct port_class *trivfs_cntl_portclasses[1]; +int trivfs_protid_nportclasses = 1; +int trivfs_cntl_nportclasses = 1; + +/* Implementation of notify interface */ +kern_return_t +do_mach_notify_port_deleted (mach_port_t notify, + mach_port_t name) +{ + return EOPNOTSUPP; +} + +kern_return_t +do_mach_notify_msg_accepted (mach_port_t notify, + mach_port_t name) +{ + return EOPNOTSUPP; +} + +kern_return_t +do_mach_notify_port_destroyed (mach_port_t notify, + mach_port_t port) +{ + return EOPNOTSUPP; +} + +kern_return_t +do_mach_notify_no_senders (mach_port_t notify, + mach_port_mscount_t mscount) +{ + return ports_do_mach_notify_no_senders (notify, mscount); +} + +kern_return_t +do_mach_notify_send_once (mach_port_t notify) +{ + return EOPNOTSUPP; +} + +kern_return_t +do_mach_notify_dead_name (mach_port_t notify, + mach_port_t name) +{ + return EOPNOTSUPP; +} + +boolean_t +is_master_device (mach_port_t port) +{ + struct port_info *pi = ports_lookup_port (port_bucket, port, + trivfs_protid_portclasses[0]); + if (pi == NULL) + return FALSE; + + ports_port_deref (pi); + return TRUE; +} + +error_t +trivfs_append_args (struct trivfs_control *fsys, char **argz, size_t *argz_len) +{ + error_t err = 0; + +#define ADD_OPT(fmt, args...) \ + do { char buf[100]; \ + if (! err) { \ + snprintf (buf, sizeof buf, fmt , ##args); \ + err = argz_add (argz, argz_len, buf); } } while (0) + +#undef ADD_OPT + return err; +} + +int trivfs_init() +{ + port_bucket = ports_create_bucket (); + trivfs_cntl_portclasses[0] = ports_create_class (trivfs_clean_cntl, 0); + trivfs_protid_portclasses[0] = ports_create_class (trivfs_clean_protid, 0); + return 0; +} + +error_t +trivfs_goaway (struct trivfs_control *fsys, int flags) +{ + int count; + + /* Stop new requests. */ + ports_inhibit_class_rpcs (trivfs_cntl_portclasses[0]); + ports_inhibit_class_rpcs (trivfs_protid_portclasses[0]); + + count = ports_count_class (trivfs_protid_portclasses[0]); + + if (count && !(flags & FSYS_GOAWAY_FORCE)) + { + /* We won't go away, so start things going again... */ + ports_enable_class (trivfs_protid_portclasses[0]); + ports_resume_class_rpcs (trivfs_cntl_portclasses[0]); + ports_resume_class_rpcs (trivfs_protid_portclasses[0]); + return EBUSY; + } + + pci_system_cleanup (); + exit (0); +} + +static int +demuxer (mach_msg_header_t *inp, mach_msg_header_t *outp) +{ + int ret; + extern int device_server (mach_msg_header_t *, mach_msg_header_t *); + extern int notify_server (mach_msg_header_t *, mach_msg_header_t *); + ret = device_server (inp, outp) || notify_server (inp, outp) + || trivfs_demuxer (inp, outp); + return ret; +} + +void +trivfs_modify_stat (struct trivfs_protid *cred, io_statbuf_t *stat) +{ +} + +void trivfs_server() +{ + mach_port_t bootstrap; + struct trivfs_control *fsys; + int err; + + task_get_bootstrap_port (mach_task_self (), &bootstrap); + if (bootstrap == MACH_PORT_NULL) + error (1, 0, "must be started as a translator"); + + /* Reply to our parent. */ + err = trivfs_startup (bootstrap, 0, + trivfs_cntl_portclasses[0], port_bucket, + trivfs_protid_portclasses[0], port_bucket, &fsys); + mach_port_deallocate (mach_task_self (), bootstrap); + if (err) + error (1, err, "Contacting parent"); + + /* Launch. */ + do + { + ports_manage_port_operations_one_thread (port_bucket, demuxer, 0); + } while (trivfs_goaway (fsys, 0)); +} |