[421] | 1 | /* |
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| 2 | * sys_display.c - display the current state of a kernel structure on TXT0 |
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| 3 | * |
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[440] | 4 | * Author Alain Greiner (2016,2017,2018) |
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[421] | 5 | * |
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| 6 | * Copyright (c) UPMC Sorbonne Universites |
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| 7 | * |
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| 8 | * This file is part of ALMOS-MKH. |
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| 9 | * |
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| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 11 | * under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation; version 2.0 of the License. |
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| 13 | * |
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| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 17 | * 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 ALMOS-MKH; if not, write to the Free Software Foundation, |
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 22 | */ |
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| 23 | |
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[457] | 24 | #include <hal_kernel_types.h> |
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[421] | 25 | #include <hal_uspace.h> |
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| 26 | #include <errno.h> |
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[433] | 27 | #include <vmm.h> |
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[421] | 28 | #include <cluster.h> |
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| 29 | #include <thread.h> |
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| 30 | #include <process.h> |
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[433] | 31 | #include <string.h> |
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[443] | 32 | #include <shared_syscalls.h> |
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[611] | 33 | #include <vfs.h> |
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| 34 | #include <mapper.h> |
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[421] | 35 | |
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[506] | 36 | #include <syscalls.h> |
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| 37 | |
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[443] | 38 | ///////////////////////////////////////////////////////////////////////////////// |
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| 39 | // This static function returns a printable string for the type of display. |
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| 40 | ///////////////////////////////////////////////////////////////////////////////// |
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[421] | 41 | |
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[443] | 42 | #if DEBUG_SYS_DISPLAY |
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| 43 | static char* display_type_str( uint32_t type ) |
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| 44 | { |
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| 45 | if ( type == DISPLAY_STRING ) return "STRING"; |
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| 46 | else if( type == DISPLAY_VMM ) return "VMM"; |
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| 47 | else if( type == DISPLAY_SCHED ) return "SCHED"; |
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| 48 | else if( type == DISPLAY_CLUSTER_PROCESSES ) return "CLUSTER_PROCESSES"; |
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| 49 | else if( type == DISPLAY_VFS ) return "VFS"; |
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| 50 | else if( type == DISPLAY_CHDEV ) return "CHDEV"; |
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| 51 | else if( type == DISPLAY_TXT_PROCESSES ) return "TXT_PROCESSES"; |
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[580] | 52 | else if( type == DISPLAY_DQDT ) return "DQDT"; |
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| 53 | else if( type == DISPLAY_BUSYLOCKS ) return "BUSYLOCKS"; |
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[443] | 54 | } |
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| 55 | #endif |
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| 56 | |
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[421] | 57 | ///////////////////////////// |
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| 58 | int sys_display( reg_t type, |
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| 59 | reg_t arg0, |
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[611] | 60 | reg_t arg1, |
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| 61 | reg_t arg2 ) |
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[421] | 62 | { |
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[433] | 63 | |
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[440] | 64 | error_t error; |
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| 65 | vseg_t * vseg; |
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| 66 | |
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| 67 | thread_t * this = CURRENT_THREAD; |
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| 68 | process_t * process = this->process; |
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| 69 | |
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[594] | 70 | #if (DEBUG_SYS_DISPLAY || CONFIG_INSTRUMENTATION_SYSCALLS) |
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| 71 | uint64_t tm_start = hal_get_cycles(); |
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| 72 | #endif |
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| 73 | |
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[438] | 74 | #if DEBUG_SYS_DISPLAY |
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[433] | 75 | tm_start = hal_get_cycles(); |
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[438] | 76 | if( DEBUG_SYS_DISPLAY < tm_start ) |
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[594] | 77 | printk("\n[DBG] %s : thread[%x,%x] enter / type %s / cycle = %d\n", |
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| 78 | __FUNCTION__, process->pid, this->trdid, display_type_str(type), (uint32_t)tm_start ); |
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[433] | 79 | #endif |
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| 80 | |
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[440] | 81 | //////////////////////////// |
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[421] | 82 | if( type == DISPLAY_STRING ) |
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| 83 | { |
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| 84 | char kbuf[256]; |
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[433] | 85 | uint32_t length; |
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[421] | 86 | |
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| 87 | char * string = (char *)arg0; |
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[440] | 88 | |
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[421] | 89 | // check string in user space |
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[440] | 90 | error = vmm_get_vseg( process , (intptr_t)arg0 , &vseg ); |
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| 91 | |
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| 92 | if( error ) |
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[433] | 93 | { |
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[440] | 94 | |
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| 95 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 96 | printk("\n[ERROR] in %s for STRING : string buffer %x unmapped\n", |
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| 97 | __FUNCTION__ , (intptr_t)arg0 ); |
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[440] | 98 | #endif |
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| 99 | this->errno = EINVAL; |
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[433] | 100 | return -1; |
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| 101 | } |
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[421] | 102 | |
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| 103 | // ckeck string length |
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[433] | 104 | length = hal_strlen_from_uspace( string ); |
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[440] | 105 | |
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[433] | 106 | if( length >= 256 ) |
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| 107 | { |
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[440] | 108 | |
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| 109 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 110 | printk("\n[ERROR] in %s for STRING : string length %d too large\n", |
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| 111 | __FUNCTION__ , length ); |
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[440] | 112 | #endif |
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| 113 | this->errno = EINVAL; |
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[433] | 114 | return -1; |
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| 115 | } |
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[421] | 116 | |
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[440] | 117 | // copy string to kernel space |
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[421] | 118 | hal_strcpy_from_uspace( kbuf , string , 256 ); |
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| 119 | |
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| 120 | // print message on TXT0 kernel terminal |
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[440] | 121 | printk("\n%s / cycle %d\n", kbuf, (uint32_t)hal_get_cycles() ); |
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[421] | 122 | } |
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[440] | 123 | ////////////////////////////// |
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[421] | 124 | else if( type == DISPLAY_VMM ) |
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| 125 | { |
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[443] | 126 | cxy_t cxy = (cxy_t)arg0; |
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| 127 | pid_t pid = (pid_t)arg1; |
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[421] | 128 | |
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[443] | 129 | // check cxy argument |
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| 130 | if( cluster_is_undefined( cxy ) ) |
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| 131 | { |
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[421] | 132 | |
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[443] | 133 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 134 | printk("\n[ERROR] in %s for VMM : process %x in cluster %x not found\n", |
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| 135 | __FUNCTION__ , pid , cxy ); |
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[443] | 136 | #endif |
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| 137 | this->errno = EINVAL; |
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| 138 | return -1; |
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| 139 | } |
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| 140 | |
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| 141 | // get extended pointer on process PID in cluster CXY |
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| 142 | xptr_t process_xp = cluster_get_process_from_pid_in_cxy( cxy , pid ); |
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| 143 | |
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[433] | 144 | if( process_xp == XPTR_NULL ) |
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| 145 | { |
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[440] | 146 | |
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| 147 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 148 | printk("\n[ERROR] in %s for VMM : process %x in cluster %x not found\n", |
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| 149 | __FUNCTION__ , pid , cxy ); |
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[440] | 150 | #endif |
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| 151 | this->errno = EINVAL; |
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[433] | 152 | return -1; |
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| 153 | } |
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[421] | 154 | |
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[443] | 155 | // get local pointer on process |
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| 156 | process_t * process = (process_t *)GET_PTR( process_xp ); |
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[421] | 157 | |
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| 158 | // call kernel function |
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[443] | 159 | if( cxy == local_cxy ) |
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[421] | 160 | { |
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[443] | 161 | vmm_display( process , true ); |
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[421] | 162 | } |
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| 163 | else |
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| 164 | { |
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[443] | 165 | rpc_vmm_display_client( cxy , process , true ); |
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[421] | 166 | } |
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| 167 | } |
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[440] | 168 | //////////////////////////////// |
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[421] | 169 | else if( type == DISPLAY_SCHED ) |
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| 170 | { |
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| 171 | cxy_t cxy = (cxy_t)arg0; |
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| 172 | lid_t lid = (lid_t)arg1; |
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| 173 | |
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[440] | 174 | // check cxy argument |
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[433] | 175 | if( cluster_is_undefined( cxy ) ) |
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| 176 | { |
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[440] | 177 | |
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| 178 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 179 | printk("\n[ERROR] in %s for SCHED : illegal cxy argument %x\n", |
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| 180 | __FUNCTION__ , cxy ); |
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[440] | 181 | #endif |
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| 182 | this->errno = EINVAL; |
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[433] | 183 | return -1; |
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| 184 | } |
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[421] | 185 | |
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[440] | 186 | // check lid argument |
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[433] | 187 | if( lid >= LOCAL_CLUSTER->cores_nr ) |
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| 188 | { |
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[440] | 189 | |
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| 190 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 191 | printk("\n[ERROR] in %s for SCHED : illegal lid argument %x\n", |
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| 192 | __FUNCTION__ , lid ); |
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[440] | 193 | #endif |
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| 194 | this->errno = EINVAL; |
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[433] | 195 | return -1; |
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| 196 | } |
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[421] | 197 | |
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| 198 | if( cxy == local_cxy ) |
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| 199 | { |
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| 200 | sched_display( lid ); |
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| 201 | } |
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| 202 | else |
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| 203 | { |
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[450] | 204 | sched_remote_display( cxy , lid ); |
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[421] | 205 | } |
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| 206 | } |
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[440] | 207 | //////////////////////////////////////////// |
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[435] | 208 | else if( type == DISPLAY_CLUSTER_PROCESSES ) |
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[421] | 209 | { |
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[584] | 210 | cxy_t cxy = (cxy_t)arg0; |
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| 211 | bool_t owned = (bool_t)arg1; |
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[421] | 212 | |
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[440] | 213 | // check cxy argument |
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[433] | 214 | if( cluster_is_undefined( cxy ) ) |
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| 215 | { |
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[440] | 216 | |
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| 217 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 218 | printk("\n[ERROR] in %s for CLUSTER_PROCESSES : illegal cxy argument %x\n", |
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| 219 | __FUNCTION__ , cxy ); |
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[440] | 220 | #endif |
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| 221 | this->errno = EINVAL; |
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[433] | 222 | return -1; |
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| 223 | } |
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[421] | 224 | |
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[584] | 225 | cluster_processes_display( cxy , owned ); |
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[421] | 226 | } |
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[580] | 227 | ////////////////////////////// |
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| 228 | else if( type == DISPLAY_VFS ) |
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| 229 | { |
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| 230 | vfs_display( process->vfs_root_xp ); |
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| 231 | } |
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| 232 | //////////////////////////////// |
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| 233 | else if( type == DISPLAY_CHDEV ) |
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| 234 | { |
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| 235 | chdev_dir_display(); |
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| 236 | } |
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[440] | 237 | //////////////////////////////////////// |
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[435] | 238 | else if( type == DISPLAY_TXT_PROCESSES ) |
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| 239 | { |
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| 240 | uint32_t txt_id = (uint32_t)arg0; |
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| 241 | |
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| 242 | // check argument |
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| 243 | if( txt_id >= LOCAL_CLUSTER->nb_txt_channels ) |
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| 244 | { |
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[440] | 245 | |
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| 246 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 247 | printk("\n[ERROR] in %s for TXT_PROCESSES : illegal txt_id argument %d\n", |
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| 248 | __FUNCTION__ , txt_id ); |
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[440] | 249 | #endif |
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| 250 | this->errno = EINVAL; |
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[435] | 251 | return -1; |
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| 252 | } |
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| 253 | |
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| 254 | process_txt_display( txt_id ); |
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| 255 | } |
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[580] | 256 | /////////////////////////////// |
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| 257 | else if( type == DISPLAY_DQDT ) |
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[421] | 258 | { |
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[580] | 259 | dqdt_display(); |
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[421] | 260 | } |
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[580] | 261 | //////////////////////////////////// |
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| 262 | else if( type == DISPLAY_BUSYLOCKS ) |
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[421] | 263 | { |
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[594] | 264 | pid_t pid = (pid_t)arg0; |
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[580] | 265 | trdid_t trdid = (trdid_t)arg1; |
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| 266 | |
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| 267 | // get extended pointer on target thread |
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| 268 | xptr_t thread_xp = thread_get_xptr( pid , trdid ); |
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| 269 | |
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| 270 | if( thread_xp == XPTR_NULL ) |
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| 271 | { |
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| 272 | |
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| 273 | #if DEBUG_SYSCALLS_ERROR |
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[594] | 274 | printk("\n[ERROR] in %s for BUSYLOCKS : thread[%x,%x] not found\n", |
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| 275 | __FUNCTION__ , pid, trdid ); |
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[580] | 276 | #endif |
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| 277 | this->errno = EINVAL; |
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| 278 | return -1; |
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| 279 | } |
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| 280 | |
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| 281 | thread_display_busylocks( thread_xp ); |
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[421] | 282 | } |
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[611] | 283 | ///////////////////////////////// |
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| 284 | else if( type == DISPLAY_MAPPER ) |
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| 285 | { |
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| 286 | xptr_t root_inode_xp; |
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| 287 | xptr_t inode_xp; |
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| 288 | cxy_t inode_cxy; |
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| 289 | vfs_inode_t * inode_ptr; |
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| 290 | xptr_t mapper_xp; |
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| 291 | mapper_t * mapper_ptr; |
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| 292 | |
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| 293 | char kbuf[CONFIG_VFS_MAX_PATH_LENGTH]; |
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| 294 | |
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| 295 | char * path = (char *)arg0; |
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| 296 | uint32_t page_id = (uint32_t)arg1; |
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| 297 | uint32_t nbytes = (uint32_t)arg2; |
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| 298 | |
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| 299 | // check pathname length |
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| 300 | if( hal_strlen_from_uspace( path ) >= CONFIG_VFS_MAX_PATH_LENGTH ) |
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| 301 | { |
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| 302 | |
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| 303 | #if DEBUG_SYSCALLS_ERROR |
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| 304 | printk("\n[ERROR] in %s for MAPPER : pathname too long\n", |
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| 305 | __FUNCTION__ ); |
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| 306 | #endif |
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| 307 | this->errno = ENFILE; |
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| 308 | return -1; |
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| 309 | } |
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| 310 | |
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| 311 | // copy pathname in kernel space |
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| 312 | hal_strcpy_from_uspace( kbuf , path , CONFIG_VFS_MAX_PATH_LENGTH ); |
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| 313 | |
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| 314 | // compute root inode for pathname |
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| 315 | if( kbuf[0] == '/' ) // absolute path |
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| 316 | { |
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| 317 | // use extended pointer on VFS root inode |
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| 318 | root_inode_xp = process->vfs_root_xp; |
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| 319 | } |
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| 320 | else // relative path |
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| 321 | { |
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| 322 | // get cluster and local pointer on reference process |
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| 323 | xptr_t ref_xp = process->ref_xp; |
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| 324 | process_t * ref_ptr = (process_t *)GET_PTR( ref_xp ); |
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| 325 | cxy_t ref_cxy = GET_CXY( ref_xp ); |
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| 326 | |
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| 327 | // use extended pointer on CWD inode |
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| 328 | root_inode_xp = hal_remote_l64( XPTR( ref_cxy , &ref_ptr->cwd_xp ) ); |
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| 329 | } |
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| 330 | |
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| 331 | // get extended pointer on target inode |
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| 332 | error = vfs_lookup( root_inode_xp, |
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| 333 | kbuf, |
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| 334 | 0, |
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| 335 | &inode_xp, |
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| 336 | NULL ); |
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| 337 | if( error ) |
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| 338 | { |
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| 339 | |
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| 340 | #if DEBUG_SYSCALLS_ERROR |
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| 341 | printk("\n[ERROR] in %s for MAPPER : cannot found inode <%s>\n", |
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| 342 | __FUNCTION__ , kbuf ); |
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| 343 | #endif |
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| 344 | this->errno = ENFILE; |
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| 345 | return -1; |
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| 346 | } |
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| 347 | |
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| 348 | // get target inode cluster and local pointer |
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| 349 | inode_cxy = GET_CXY( inode_xp ); |
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| 350 | inode_ptr = GET_PTR( inode_xp ); |
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| 351 | |
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| 352 | // get extended pointer on target mapper |
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| 353 | mapper_ptr = hal_remote_lpt( XPTR( inode_cxy , &inode_ptr->mapper ) ); |
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| 354 | mapper_xp = XPTR( inode_cxy , mapper_ptr ); |
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| 355 | |
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| 356 | // display mapper |
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| 357 | error = mapper_display_page( mapper_xp , page_id , nbytes , kbuf ); |
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| 358 | |
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| 359 | if( error ) |
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| 360 | { |
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| 361 | |
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| 362 | #if DEBUG_SYSCALLS_ERROR |
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| 363 | printk("\n[ERROR] in %s for MAPPER : cannot display page %d\n", |
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| 364 | __FUNCTION__ , page_id ); |
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| 365 | #endif |
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| 366 | this->errno = ENFILE; |
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| 367 | return -1; |
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| 368 | } |
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| 369 | } |
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[440] | 370 | //// |
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[433] | 371 | else |
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| 372 | { |
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[440] | 373 | |
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| 374 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 375 | printk("\n[ERROR] in %s : undefined display type %d\n", |
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| 376 | __FUNCTION__ , type ); |
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[440] | 377 | #endif |
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| 378 | this->errno = EINVAL; |
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[433] | 379 | return -1; |
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| 380 | } |
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[421] | 381 | |
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[594] | 382 | #if (DEBUG_SYS_DISPLAY || CONFIG_INSTRUMENTATION_SYSCALLS) |
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| 383 | uint64_t tm_end = hal_get_cycles(); |
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| 384 | #endif |
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| 385 | |
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[438] | 386 | #if DEBUG_SYS_DISPLAY |
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| 387 | if( DEBUG_SYS_DISPLAY < tm_end ) |
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[594] | 388 | printk("\n[DBG] %s : thread[%x,%x] exit / cycle %d\n", |
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| 389 | __FUNCTION__, process->pid, this->trdid, (uint32_t)tm_end ); |
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[433] | 390 | #endif |
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| 391 | |
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[594] | 392 | #if CONFIG_INSTRUMENTATION_SYSCALLS |
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| 393 | hal_atomic_add( &syscalls_cumul_cost[SYS_DISPLAY] , tm_end - tm_start ); |
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| 394 | hal_atomic_add( &syscalls_occurences[SYS_DISPLAY] , 1 ); |
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| 395 | #endif |
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| 396 | |
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[433] | 397 | return 0; |
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| 398 | |
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| 399 | } // end sys_display() |
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