| 1 | /* Copyright (C) 1994-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <hurd.h> |
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| 19 | #include <hurd/fd.h> |
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| 20 | #include <hurd/signal.h> |
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| 21 | #include <hurd/term.h> |
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| 22 | #include <fcntl.h> |
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| 23 | |
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| 24 | /* Store PORT in file descriptor D, doing appropriate ctty magic. |
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| 25 | FLAGS are as for `open'; only O_IGNORE_CTTY and O_CLOEXEC are meaningful. |
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| 26 | D should be locked, and will not be unlocked. */ |
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| 27 | |
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| 28 | void |
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| 29 | _hurd_port2fd (struct hurd_fd *d, io_t dport, int flags) |
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| 30 | { |
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| 31 | mach_port_t cttyid; |
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| 32 | io_t ctty = MACH_PORT_NULL; |
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| 33 | |
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| 34 | if (!(flags & O_IGNORE_CTTY)) |
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| 35 | __USEPORT (CTTYID, |
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| 36 | ({ |
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| 37 | if (port != MACH_PORT_NULL /* Do we have a ctty? */ |
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| 38 | && ! __term_getctty (dport, &cttyid)) |
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| 39 | /* Could this be it? */ |
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| 40 | { |
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| 41 | __mach_port_deallocate (__mach_task_self (), cttyid); |
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| 42 | /* This port is capable of being a controlling tty. |
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| 43 | Is it ours? */ |
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| 44 | if (cttyid == port) |
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| 45 | __term_open_ctty (dport, _hurd_pid, _hurd_pgrp, &ctty); |
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| 46 | /* XXX if this port is our ctty, but we are not doing |
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| 47 | ctty style i/o because term_become_ctty barfed, |
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| 48 | what to do? */ |
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| 49 | } |
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| 50 | 0; |
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| 51 | })); |
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| 52 | |
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| 53 | /* Install PORT in the descriptor cell, leaving it locked. */ |
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| 54 | { |
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| 55 | mach_port_t old |
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| 56 | = _hurd_userlink_clear (&d->port.users) ? d->port.port : MACH_PORT_NULL; |
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| 57 | d->port.port = dport; |
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| 58 | d->flags = (flags & O_CLOEXEC) ? FD_CLOEXEC : 0; |
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| 59 | if (old != MACH_PORT_NULL) |
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| 60 | __mach_port_deallocate (__mach_task_self (), old); |
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| 61 | } |
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| 62 | |
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| 63 | _hurd_port_set (&d->ctty, ctty); |
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| 64 | } |
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| 65 | |
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