[181] | 1 | //lib.c: |
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| 2 | |
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[668] | 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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| 5 | * |
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| 6 | * This file is part of roard a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * RoarAudio is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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[181] | 25 | #include "roard.h" |
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| 26 | |
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[198] | 27 | int lib_run_bg(char * cmd, int infh, int outfh, int errfh, int * closefh, int lenclose) { |
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[1500] | 28 | #ifdef ROAR_HAVE_FORK |
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[182] | 29 | pid_t child = fork(); |
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| 30 | int fh[3] = {-1, -1, -1}; |
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| 31 | int i; |
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| 32 | |
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| 33 | if ( child == -1 ) { |
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| 34 | ROAR_ERR("lib_run_bg(*): Can not fork: %s", strerror(errno)); |
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| 35 | return -1; |
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| 36 | } |
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| 37 | |
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| 38 | if ( child ) { |
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| 39 | // we are the parent! |
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| 40 | return child; |
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| 41 | } |
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| 42 | |
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| 43 | // we are the child. |
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| 44 | // first we need to close a lot of open files! |
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| 45 | |
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| 46 | // before we do this we need to keep backups of our handles: |
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| 47 | fh[0] = dup(infh); |
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| 48 | fh[1] = dup(outfh); |
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| 49 | fh[2] = dup(errfh); |
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| 50 | |
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| 51 | // TODO: test for errors here. |
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| 52 | |
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[1500] | 53 | #ifdef ROAR_SUPPORT_LISTEN |
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[2530] | 54 | for (i = 0; i < ROAR_MAX_LISTEN_SOCKETS; i++) |
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| 55 | if ( g_listen_socket[i] != -1 ) |
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| 56 | close(g_listen_socket[i]); // listen socket. |
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[1500] | 57 | #endif |
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[182] | 58 | |
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[1197] | 59 | // this breaks the new driver interface |
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| 60 | // clients_free(); // delete all clients!, this allso delets all streams |
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[182] | 61 | |
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[2500] | 62 | #ifndef ROAR_WITHOUT_DCOMP_MIDI |
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[186] | 63 | midi_free(); // close midi devices |
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[2500] | 64 | #endif |
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[186] | 65 | |
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[198] | 66 | // close fh's we got ask to close: |
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[1500] | 67 | #ifdef ROAR_HAVE_IO_POSIX |
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[198] | 68 | for (i = 0; i < lenclose; i++) |
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| 69 | close(closefh[i]); |
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[1500] | 70 | #else |
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| 71 | if ( lenclose ) { |
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| 72 | ROAR_WARN("lib_run_bg(*): lenclose > 0 and no way known to close fds"); |
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| 73 | } |
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| 74 | #endif |
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[198] | 75 | |
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[182] | 76 | // next we need to remap our stdio: |
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| 77 | // stdio: fh 0..2 |
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| 78 | |
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| 79 | for (i = 0; i < 3; i++) { |
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[1500] | 80 | #ifdef ROAR_HAVE_IO_POSIX |
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[182] | 81 | close(i); |
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[1500] | 82 | #endif |
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[182] | 83 | dup2(fh[i], i); // todo test if this is ok. |
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[184] | 84 | close(fh[i]); |
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[182] | 85 | } |
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| 86 | |
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| 87 | // OK, now we should have set up all our fh properbly, exec our command: |
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| 88 | |
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[1653] | 89 | execl("/bin/sh", "sh", "-c", cmd, (char*)NULL); |
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[182] | 90 | |
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| 91 | // still alive? BAD! |
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| 92 | ROAR_ERR("lib_run_bg(*): We are still alive! BAD!"); |
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[1500] | 93 | ROAR_U_EXIT(3); |
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[182] | 94 | return -1; |
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[1500] | 95 | #else |
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| 96 | return -1; |
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| 97 | #endif |
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[182] | 98 | } |
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| 99 | |
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[181] | 100 | //ll |
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