diff options
Diffstat (limited to 'libfshelp')
| -rw-r--r-- | libfshelp/drop-transbox.c | 28 | ||||
| -rw-r--r-- | libfshelp/fetch-control.c | 32 | ||||
| -rw-r--r-- | libfshelp/set-active.c | 34 | ||||
| -rw-r--r-- | libfshelp/start-translator-long.c | 261 | ||||
| -rw-r--r-- | libfshelp/start-translator.c | 59 | ||||
| -rw-r--r-- | libfshelp/transbox-init.c | 34 |
6 files changed, 448 insertions, 0 deletions
diff --git a/libfshelp/drop-transbox.c b/libfshelp/drop-transbox.c new file mode 100644 index 00000000..d9087488 --- /dev/null +++ b/libfshelp/drop-transbox.c @@ -0,0 +1,28 @@ +/* + Copyright (C) 1995 Free Software Foundation, Inc. + Written by Michael I. Bushnell. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "fshelp.h" + +void +fshelp_drop_transbox (struct transbox *box) +{ + if (box->active != MACH_PORT_NULL) + mach_port_deallocate (mach_task_self (), box->active); +} diff --git a/libfshelp/fetch-control.c b/libfshelp/fetch-control.c new file mode 100644 index 00000000..72bad1e3 --- /dev/null +++ b/libfshelp/fetch-control.c @@ -0,0 +1,32 @@ +/* + Copyright (C) 1995 Free Software Foundation, Inc. + Written by Michael I. Bushnell. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "fshelp.h" + +error_t +fshelp_fetch_control (struct transbox *box, + mach_port_t *control) +{ + mutex_lock (&box->innerlock); /* cancellation point XXX */ + *control = box->active; + mach_port_mod_refs (mach_task_self (), *control, MACH_PORT_RIGHT_SEND, 1); + mutex_unlock (&box->innerlock); + return 0; +} diff --git a/libfshelp/set-active.c b/libfshelp/set-active.c new file mode 100644 index 00000000..1671d09a --- /dev/null +++ b/libfshelp/set-active.c @@ -0,0 +1,34 @@ +/* + Copyright (C) 1995 Free Software Foundation, Inc. + Written by Michael I. Bushnell. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "fshelp.h" + +error_t +fshelp_set_active (struct transbox *box, + mach_port_t active) +{ + mutex_lock (&box->innerlock); /* cancellation point XXX */ + if (box->active != MACH_PORT_NULL) + mach_port_deallocate (mach_task_self (), box->active); + box->active = active; + mutex_unlock (&box->innerlock); + return 0; +} + diff --git a/libfshelp/start-translator-long.c b/libfshelp/start-translator-long.c new file mode 100644 index 00000000..f577bd59 --- /dev/null +++ b/libfshelp/start-translator-long.c @@ -0,0 +1,261 @@ +/* + Copyright (C) 1995 Free Software Foundation, Inc. + Written by Miles Bader and Michael I. Bushnell. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <hurd.h> +#include <mach/notify.h> +#include <mach.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> +#include <assert.h> +#include "fshelp.h" + + +/* The data passed in the various messages we're interested in. */ +struct fsys_startup_request +{ + mach_msg_header_t head; + mach_msg_type_t control_portType; + mach_port_t control_port; +}; + +struct fsys_startup_reply +{ + mach_msg_header_t head; + mach_msg_type_t RetCodeType; + kern_return_t RetCode; + mach_msg_type_t realnodeType; + mach_port_t realnode; +}; + +static const mach_msg_type_t control_portCheck = +{ + 17, /* msgt_name = */ + 32, /* msgt_size = */ + 1, /* msgt_number = */ + TRUE, /* msgt_inline = */ + FALSE, /* msgt_longform = */ + FALSE, /* msgt_deallocate = */ + 0 /* msgt_unused = */ +}; + +static const mach_msg_type_t RetCodeType = { + MACH_MSG_TYPE_INTEGER_32, /* msgt_name = */ + 32, /* msgt_size = */ + 1, /* msgt_number = */ + TRUE, /* msgt_inline = */ + FALSE, /* msgt_longform = */ + FALSE, /* msgt_deallocate = */ + 0 /* msgt_unused = */ +}; + +static const mach_msg_type_t realnodeType = +{ + -1, /* msgt_name = */ + 32, /* msgt_size = */ + 1, /* msgt_number = */ + TRUE, /* msgt_inline = */ + FALSE, /* msgt_longform = */ + FALSE, /* msgt_deallocate = */ + 0 /* msgt_unused = */ +}; + + +/* Wait around for an fsys_startup message on the port PORT from the + translator on NODE (timing out after TIMEOUT milliseconds), and return a + send right for the resulting fsys control port in CONTROL. If a dead-name + notification is received on PORT, then it will be assumed that the + translator died, and EDIED will be returned. If an error occurs, the + error code is returned, otherwise 0. */ +static error_t +service_fsys_startup(file_t node, mach_msg_type_name_t node_type, + mach_port_t port, long timeout, + fsys_t *control) +{ + error_t err; + union + { + mach_msg_header_t head; + struct fsys_startup_request startup; + mach_dead_name_notification_t dead; + } + request; + struct fsys_startup_reply reply; + + /* Wait for the fsys_startup message... */ + err = mach_msg(&request.head, (MACH_RCV_MSG + | timeout ? MACH_RCV_TIMEOUT : 0), + 0, sizeof(request), port, timeout, MACH_PORT_NULL); + if (err) + return err; + + /* Check whether we actually got a dead-name notification instead. */ + if (request.head.msgh_id == MACH_NOTIFY_NO_SENDERS) + return EDIED; + + /* Construct our reply to the fsys_startup rpc. */ + reply.head.msgh_size = sizeof(reply); + reply.head.msgh_bits = + MACH_MSGH_BITS(MACH_MSGH_BITS_REMOTE(request.head.msgh_bits), 0); + reply.head.msgh_remote_port = request.head.msgh_remote_port; + reply.head.msgh_local_port = MACH_PORT_NULL; + reply.head.msgh_seqno = 0; + reply.head.msgh_id = request.head.msgh_id + 100; + reply.RetCodeType = RetCodeType; + + if (request.head.msgh_id != 22000) + reply.RetCode = MIG_BAD_ID; + else if (*(int *)&request.startup.control_portType + != *(int *)&control_portCheck) + reply.RetCode = MIG_BAD_ARGUMENTS; + else + { + *control = request.startup.control_port; + + reply.RetCode = KERN_SUCCESS; + reply.realnodeType = realnodeType; + + reply.realnode = node; + reply.realnodeType.msgt_name = node_type; + if (node != MACH_PORT_NULL) + /* The message can't be simple because of the port. */ + reply.head.msgh_bits |= MACH_MSGH_BITS_COMPLEX; + } + + err = mach_msg(&reply.head, MACH_SEND_MSG, sizeof(reply), 0, + request.head.msgh_remote_port, + MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); + + if (reply.RetCode) + /* Make our error return be the earlier one. */ + err = reply.RetCode; + + return err; +} + + +error_t +fshelp_start_translator_long (file_t underlying, + mach_msg_type_name_t underlying_type, + char *name, char *argz, int argz_len, + mach_port_t *fds, + mach_msg_type_name_t fds_type, int fds_len, + mach_port_t *ports, + mach_msg_type_name_t ports_type, int ports_len, + int *ints, int ints_len, + int timeout, fsys_t *control) +{ + error_t err; + file_t executable; + mach_port_t bootstrap, task, prev_notify, proc; + int ports_moved = 0; + + /* Find the translator itself. Since argz has zero-separated elements, we + can use it as a normal string representing the first element. */ + executable = file_name_lookup(name, O_EXEC, 0); + if (executable == MACH_PORT_NULL) + return errno; + + /* Create a bootstrap port for the translator. */ + err = + mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &bootstrap); + if (err) + goto lose; + + /* Create the task for the translator. */ + err = task_create (mach_task_self (), 0, &task); + if (err) + goto lose; + + /* Designate TASK as our child. */ + proc = getproc (); + proc_child (proc, task); + mach_port_deallocate (mach_task_self (), proc); + + assert (ports_len > INIT_PORT_BOOTSTRAP); + switch (ports_type) + { + case MACH_MSG_TYPE_MAKE_SEND: + case MACH_MSG_TYPE_MAKE_SEND_ONCE: + break; + + case MACH_MSG_TYPE_MOVE_SEND: + if (ports[INIT_PORT_BOOTSTRAP] != MACH_PORT_NULL) + mach_port_deallocate (mach_task_self (), ports[INIT_PORT_BOOTSTRAP]); + mach_port_insert_right (mach_task_self (), bootstrap, bootstrap, + MACH_MSG_TYPE_MAKE_SEND); + break; + + case MACH_MSG_TYPE_COPY_SEND: + mach_port_insert_right (mach_task_self (), bootstrap, bootstrap, + MACH_MSG_TYPE_MAKE_SEND); + break; + + default: + abort (); + } + ports[INIT_PORT_BOOTSTRAP] = bootstrap; + + /* Try and exec the translator in TASK... */ + err = file_exec (executable, task, EXEC_DEFAULTS, argz, argz_len, + 0, 0, + fds, fds_type, fds_len, + ports, ports_type, ports_len, + ints, ints_len, 0, 0, 0, 0); + ports_moved = 1; + if (err) + goto lose; + + /* Ask to be told if TASK dies. */ + err = + mach_port_request_notification(mach_task_self(), + bootstrap, MACH_NOTIFY_NO_SENDERS, 0, + bootstrap, MACH_MSG_TYPE_MAKE_SEND_ONCE, + &prev_notify); + if (err) + return err; + + /* Ok, cool, we've got a running(?) program, now rendezvous with it if + possible using the startup protocol on the bootstrap port... */ + err = service_fsys_startup(underlying, underlying_type, bootstrap, + timeout, control); + + lose: + if (!ports_moved) + { + int i; + + if (fds_type == MACH_MSG_TYPE_MOVE_SEND) + for (i = 0; i < fds_len; i++) + mach_port_deallocate (mach_task_self (), fds[i]); + if (ports_type == MACH_MSG_TYPE_MOVE_SEND) + for (i = 0; i < ports_len; i++) + mach_port_deallocate (mach_task_self (), ports[i]); + } + if (bootstrap != MACH_PORT_NULL) + mach_port_destroy(mach_task_self(), bootstrap); + if (executable != MACH_PORT_NULL) + mach_port_deallocate(mach_task_self(), executable); + if (task != MACH_PORT_NULL) + mach_port_deallocate(mach_task_self(), task); + + return err; +} diff --git a/libfshelp/start-translator.c b/libfshelp/start-translator.c new file mode 100644 index 00000000..446e5e57 --- /dev/null +++ b/libfshelp/start-translator.c @@ -0,0 +1,59 @@ +/* + Copyright (C) 1995 Free Software Foundation, Inc. + Written by Michael I. Bushnell. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "fshelp.h" +#include <unistd.h> +#include <string.h> +#include <hurd.h> + +error_t +fshelp_start_translator (mach_port_t underlying, + mach_msg_type_name_t underlying_type, + char *name, char *argz, int argz_len, + int timeout, fsys_t *control) +{ + mach_port_t ports[INIT_PORT_MAX]; + mach_port_t fds[STDERR_FILENO + 1]; + int ints[INIT_INT_MAX]; + int i; + + for (i = 0; i < INIT_PORT_MAX; i++) + ports[i] = MACH_PORT_NULL; + for (i = 0; i < STDERR_FILENO + 1; i++) + fds[i] = MACH_PORT_NULL; + bzero (ints, INIT_INT_MAX * sizeof (int)); + + ports[INIT_PORT_CWDIR] = getcwdir (); + ports[INIT_PORT_CRDIR] = getcrdir (); + ports[INIT_PORT_AUTH] = getauth (); + fds[STDERR_FILENO] = getdport (STDERR_FILENO); + + return fshelp_start_translator_long (underlying, underlying_type, + name, argz, argz_len, + fds, MACH_MSG_TYPE_MOVE_SEND, + STDERR_FILENO + 1, + ports, MACH_MSG_TYPE_MOVE_SEND, + INIT_PORT_MAX, + ints, INIT_INT_MAX, + timeout, control); +} + + + diff --git a/libfshelp/transbox-init.c b/libfshelp/transbox-init.c new file mode 100644 index 00000000..68df39ca --- /dev/null +++ b/libfshelp/transbox-init.c @@ -0,0 +1,34 @@ +/* + Copyright (C) 1995 Free Software Foundation, Inc. + Written by Michael I. Bushnell. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "fshelp.h" +#include <cthreads.h> + +void +fshelp_transbox_init (struct transbox *transbox, + struct mutex *lock, + void *cookie) +{ + transbox->active = MACH_PORT_NULL; + transbox->lock = lock; + mutex_init (&transbox->innerlock); + transbox->cookie = cookie; +} + |