[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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[624] | 4 | * Author Alain Greiner (2016,2017,2018, 2019) |
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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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[624] | 26 | #include <hal_vmm.h> |
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[421] | 27 | #include <errno.h> |
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[433] | 28 | #include <vmm.h> |
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[421] | 29 | #include <cluster.h> |
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| 30 | #include <thread.h> |
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| 31 | #include <process.h> |
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[433] | 32 | #include <string.h> |
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[443] | 33 | #include <shared_syscalls.h> |
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[623] | 34 | #include <remote_barrier.h> |
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[611] | 35 | #include <vfs.h> |
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| 36 | #include <mapper.h> |
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[421] | 37 | |
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[506] | 38 | #include <syscalls.h> |
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| 39 | |
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[443] | 40 | ///////////////////////////////////////////////////////////////////////////////// |
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| 41 | // This static function returns a printable string for the type of display. |
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| 42 | ///////////////////////////////////////////////////////////////////////////////// |
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[421] | 43 | |
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[443] | 44 | #if DEBUG_SYS_DISPLAY |
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| 45 | static char* display_type_str( uint32_t type ) |
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| 46 | { |
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| 47 | if ( type == DISPLAY_STRING ) return "STRING"; |
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| 48 | else if( type == DISPLAY_VMM ) return "VMM"; |
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| 49 | else if( type == DISPLAY_SCHED ) return "SCHED"; |
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| 50 | else if( type == DISPLAY_CLUSTER_PROCESSES ) return "CLUSTER_PROCESSES"; |
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| 51 | else if( type == DISPLAY_VFS ) return "VFS"; |
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| 52 | else if( type == DISPLAY_CHDEV ) return "CHDEV"; |
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| 53 | else if( type == DISPLAY_TXT_PROCESSES ) return "TXT_PROCESSES"; |
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[580] | 54 | else if( type == DISPLAY_DQDT ) return "DQDT"; |
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| 55 | else if( type == DISPLAY_BUSYLOCKS ) return "BUSYLOCKS"; |
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[612] | 56 | else if( type == DISPLAY_MAPPER ) return "MAPPER"; |
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[623] | 57 | else if( type == DISPLAY_BARRIER ) return "BARRIER"; |
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[612] | 58 | else return "undefined"; |
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[443] | 59 | } |
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| 60 | #endif |
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| 61 | |
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[421] | 62 | ///////////////////////////// |
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| 63 | int sys_display( reg_t type, |
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| 64 | reg_t arg0, |
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[611] | 65 | reg_t arg1, |
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| 66 | reg_t arg2 ) |
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[421] | 67 | { |
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[433] | 68 | |
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[440] | 69 | error_t error; |
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| 70 | vseg_t * vseg; |
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| 71 | |
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| 72 | thread_t * this = CURRENT_THREAD; |
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| 73 | process_t * process = this->process; |
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| 74 | |
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[594] | 75 | #if (DEBUG_SYS_DISPLAY || CONFIG_INSTRUMENTATION_SYSCALLS) |
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| 76 | uint64_t tm_start = hal_get_cycles(); |
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| 77 | #endif |
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| 78 | |
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[438] | 79 | #if DEBUG_SYS_DISPLAY |
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[433] | 80 | tm_start = hal_get_cycles(); |
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[438] | 81 | if( DEBUG_SYS_DISPLAY < tm_start ) |
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[619] | 82 | printk("\n[%s] thread[%x,%x] enter / type %s / cycle = %d\n", |
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[594] | 83 | __FUNCTION__, process->pid, this->trdid, display_type_str(type), (uint32_t)tm_start ); |
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[433] | 84 | #endif |
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| 85 | |
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[623] | 86 | switch( type ) |
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[421] | 87 | { |
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[623] | 88 | //////////////////// |
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| 89 | case DISPLAY_STRING: |
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| 90 | { |
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| 91 | char kbuf[512]; |
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| 92 | uint32_t length; |
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[421] | 93 | |
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[623] | 94 | char * string = (char *)arg0; |
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[440] | 95 | |
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[623] | 96 | // check string in user space |
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| 97 | error = vmm_get_vseg( process , (intptr_t)arg0 , &vseg ); |
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[440] | 98 | |
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[623] | 99 | if( error ) |
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| 100 | { |
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[440] | 101 | |
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| 102 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 103 | printk("\n[ERROR] in %s for STRING : string buffer %x unmapped\n", |
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| 104 | __FUNCTION__ , (intptr_t)arg0 ); |
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[440] | 105 | #endif |
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[623] | 106 | this->errno = EINVAL; |
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| 107 | return -1; |
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| 108 | } |
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[421] | 109 | |
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[623] | 110 | // ckeck string length |
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| 111 | length = hal_strlen_from_uspace( string ); |
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[440] | 112 | |
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[623] | 113 | if( length >= 512 ) |
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| 114 | { |
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[440] | 115 | |
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| 116 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 117 | printk("\n[ERROR] in %s for STRING : string length %d too large\n", |
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| 118 | __FUNCTION__ , length ); |
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[440] | 119 | #endif |
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[623] | 120 | this->errno = EINVAL; |
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| 121 | return -1; |
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| 122 | } |
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[421] | 123 | |
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[623] | 124 | // copy string to kernel space |
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| 125 | hal_strcpy_from_uspace( kbuf , string , 512 ); |
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[421] | 126 | |
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[623] | 127 | // print message on TXT0 kernel terminal |
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| 128 | printk("\n%s / cycle %d\n", kbuf, (uint32_t)hal_get_cycles() ); |
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[421] | 129 | |
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[623] | 130 | break; |
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| 131 | } |
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| 132 | ///////////////// |
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| 133 | case DISPLAY_VMM: |
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[443] | 134 | { |
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[623] | 135 | cxy_t cxy = (cxy_t)arg0; |
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| 136 | pid_t pid = (pid_t)arg1; |
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[421] | 137 | |
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[623] | 138 | // check cxy argument |
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| 139 | if( cluster_is_undefined( cxy ) ) |
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| 140 | { |
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| 141 | |
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[443] | 142 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 143 | printk("\n[ERROR] in %s for VMM : process %x in cluster %x not found\n", |
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| 144 | __FUNCTION__ , pid , cxy ); |
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[443] | 145 | #endif |
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[623] | 146 | this->errno = EINVAL; |
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| 147 | return -1; |
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| 148 | } |
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[443] | 149 | |
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[623] | 150 | // get extended pointer on process PID in cluster CXY |
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| 151 | xptr_t process_xp = cluster_get_process_from_pid_in_cxy( cxy , pid ); |
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[443] | 152 | |
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[623] | 153 | if( process_xp == XPTR_NULL ) |
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| 154 | { |
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[440] | 155 | |
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| 156 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 157 | printk("\n[ERROR] in %s for VMM : process %x in cluster %x not found\n", |
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| 158 | __FUNCTION__ , pid , cxy ); |
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[440] | 159 | #endif |
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[623] | 160 | this->errno = EINVAL; |
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| 161 | return -1; |
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| 162 | } |
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[421] | 163 | |
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[623] | 164 | // get local pointer on process |
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| 165 | process_t * process = (process_t *)GET_PTR( process_xp ); |
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[421] | 166 | |
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[623] | 167 | // call kernel function |
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| 168 | if( cxy == local_cxy ) |
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| 169 | { |
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[624] | 170 | hal_vmm_display( process , true ); |
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[623] | 171 | } |
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| 172 | else |
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| 173 | { |
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[624] | 174 | rpc_hal_vmm_display_client( cxy , process , true ); |
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[623] | 175 | } |
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| 176 | |
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| 177 | break; |
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[421] | 178 | } |
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[623] | 179 | /////////////////// |
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| 180 | case DISPLAY_SCHED: |
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[421] | 181 | { |
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[623] | 182 | cxy_t cxy = (cxy_t)arg0; |
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| 183 | lid_t lid = (lid_t)arg1; |
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[421] | 184 | |
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[623] | 185 | // check cxy argument |
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| 186 | if( cluster_is_undefined( cxy ) ) |
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| 187 | { |
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[440] | 188 | |
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| 189 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 190 | printk("\n[ERROR] in %s for SCHED : illegal cxy argument %x\n", |
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| 191 | __FUNCTION__ , cxy ); |
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[440] | 192 | #endif |
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[623] | 193 | this->errno = EINVAL; |
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| 194 | return -1; |
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| 195 | } |
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[421] | 196 | |
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[623] | 197 | // check lid argument |
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| 198 | if( lid >= LOCAL_CLUSTER->cores_nr ) |
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| 199 | { |
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[440] | 200 | |
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| 201 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 202 | printk("\n[ERROR] in %s for SCHED : illegal lid argument %x\n", |
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| 203 | __FUNCTION__ , lid ); |
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[440] | 204 | #endif |
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[623] | 205 | this->errno = EINVAL; |
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| 206 | return -1; |
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| 207 | } |
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[421] | 208 | |
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[623] | 209 | if( cxy == local_cxy ) |
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| 210 | { |
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| 211 | sched_display( lid ); |
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| 212 | } |
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| 213 | else |
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| 214 | { |
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| 215 | sched_remote_display( cxy , lid ); |
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| 216 | } |
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| 217 | |
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| 218 | break; |
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[421] | 219 | } |
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[623] | 220 | /////////////////////////////// |
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| 221 | case DISPLAY_CLUSTER_PROCESSES: |
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[421] | 222 | { |
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[623] | 223 | cxy_t cxy = (cxy_t)arg0; |
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| 224 | bool_t owned = (bool_t)arg1; |
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[421] | 225 | |
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[623] | 226 | // check cxy argument |
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| 227 | if( cluster_is_undefined( cxy ) ) |
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| 228 | { |
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[440] | 229 | |
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| 230 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 231 | printk("\n[ERROR] in %s for CLUSTER_PROCESSES : illegal cxy argument %x\n", |
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| 232 | __FUNCTION__ , cxy ); |
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[440] | 233 | #endif |
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[623] | 234 | this->errno = EINVAL; |
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| 235 | return -1; |
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| 236 | } |
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| 237 | |
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| 238 | cluster_processes_display( cxy , owned ); |
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| 239 | |
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| 240 | break; |
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[433] | 241 | } |
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[623] | 242 | ///////////////// |
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| 243 | case DISPLAY_VFS: |
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| 244 | { |
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| 245 | vfs_display( process->vfs_root_xp ); |
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[421] | 246 | |
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[623] | 247 | break; |
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| 248 | } |
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| 249 | /////////////////// |
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| 250 | case DISPLAY_CHDEV: |
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| 251 | { |
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| 252 | chdev_dir_display(); |
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[435] | 253 | |
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[623] | 254 | break; |
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| 255 | } |
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| 256 | /////////////////////////// |
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| 257 | case DISPLAY_TXT_PROCESSES: |
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[435] | 258 | { |
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[623] | 259 | uint32_t txt_id = (uint32_t)arg0; |
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[440] | 260 | |
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[623] | 261 | // check argument |
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| 262 | if( txt_id >= LOCAL_CLUSTER->nb_txt_channels ) |
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| 263 | { |
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| 264 | |
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[440] | 265 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 266 | printk("\n[ERROR] in %s for TXT_PROCESSES : illegal txt_id argument %d\n", |
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| 267 | __FUNCTION__ , txt_id ); |
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[440] | 268 | #endif |
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[623] | 269 | this->errno = EINVAL; |
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| 270 | return -1; |
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| 271 | } |
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[435] | 272 | |
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[623] | 273 | process_txt_display( txt_id ); |
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[580] | 274 | |
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[623] | 275 | break; |
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| 276 | } |
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| 277 | ////////////////// |
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| 278 | case DISPLAY_DQDT: |
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| 279 | { |
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| 280 | dqdt_display(); |
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[580] | 281 | |
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[623] | 282 | break; |
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| 283 | } |
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| 284 | /////////////////////// |
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| 285 | case DISPLAY_BUSYLOCKS: |
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[580] | 286 | { |
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[623] | 287 | pid_t pid = (pid_t)arg0; |
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| 288 | trdid_t trdid = (trdid_t)arg1; |
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[580] | 289 | |
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[623] | 290 | // get extended pointer on target thread |
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| 291 | xptr_t thread_xp = thread_get_xptr( pid , trdid ); |
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| 292 | |
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| 293 | if( thread_xp == XPTR_NULL ) |
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| 294 | { |
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| 295 | |
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[580] | 296 | #if DEBUG_SYSCALLS_ERROR |
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[594] | 297 | printk("\n[ERROR] in %s for BUSYLOCKS : thread[%x,%x] not found\n", |
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| 298 | __FUNCTION__ , pid, trdid ); |
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[580] | 299 | #endif |
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[623] | 300 | this->errno = EINVAL; |
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| 301 | return -1; |
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| 302 | } |
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| 303 | |
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| 304 | thread_display_busylocks( thread_xp , __FUNCTION__ ); |
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| 305 | |
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| 306 | break; |
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[580] | 307 | } |
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[623] | 308 | //////////////////// |
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| 309 | case DISPLAY_MAPPER: |
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| 310 | { |
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| 311 | xptr_t root_inode_xp; |
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| 312 | xptr_t inode_xp; |
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| 313 | cxy_t inode_cxy; |
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| 314 | vfs_inode_t * inode_ptr; |
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| 315 | xptr_t mapper_xp; |
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| 316 | mapper_t * mapper_ptr; |
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[580] | 317 | |
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[623] | 318 | char kbuf[CONFIG_VFS_MAX_PATH_LENGTH]; |
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[611] | 319 | |
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[623] | 320 | char * path = (char *)arg0; |
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| 321 | uint32_t page_id = (uint32_t)arg1; |
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| 322 | uint32_t nbytes = (uint32_t)arg2; |
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[611] | 323 | |
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[623] | 324 | // check pathname length |
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| 325 | if( hal_strlen_from_uspace( path ) >= CONFIG_VFS_MAX_PATH_LENGTH ) |
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| 326 | { |
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[611] | 327 | |
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| 328 | #if DEBUG_SYSCALLS_ERROR |
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| 329 | printk("\n[ERROR] in %s for MAPPER : pathname too long\n", |
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| 330 | __FUNCTION__ ); |
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| 331 | #endif |
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[623] | 332 | this->errno = ENFILE; |
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| 333 | return -1; |
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| 334 | } |
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[611] | 335 | |
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[623] | 336 | // copy pathname in kernel space |
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| 337 | hal_strcpy_from_uspace( kbuf , path , CONFIG_VFS_MAX_PATH_LENGTH ); |
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[611] | 338 | |
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[623] | 339 | // compute root inode for pathname |
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| 340 | if( kbuf[0] == '/' ) // absolute path |
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| 341 | { |
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| 342 | // use extended pointer on VFS root inode |
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| 343 | root_inode_xp = process->vfs_root_xp; |
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| 344 | } |
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| 345 | else // relative path |
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| 346 | { |
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| 347 | // get cluster and local pointer on reference process |
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| 348 | xptr_t ref_xp = process->ref_xp; |
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| 349 | process_t * ref_ptr = (process_t *)GET_PTR( ref_xp ); |
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| 350 | cxy_t ref_cxy = GET_CXY( ref_xp ); |
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[611] | 351 | |
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[623] | 352 | // get extended pointer on CWD inode |
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| 353 | root_inode_xp = hal_remote_l64( XPTR( ref_cxy , &ref_ptr->cwd_xp ) ); |
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| 354 | } |
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[611] | 355 | |
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[623] | 356 | // get extended pointer on target inode |
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| 357 | error = vfs_lookup( root_inode_xp, |
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| 358 | kbuf, |
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| 359 | 0, |
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| 360 | &inode_xp, |
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| 361 | NULL ); |
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| 362 | if( error ) |
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| 363 | { |
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[611] | 364 | |
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| 365 | #if DEBUG_SYSCALLS_ERROR |
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| 366 | printk("\n[ERROR] in %s for MAPPER : cannot found inode <%s>\n", |
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| 367 | __FUNCTION__ , kbuf ); |
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| 368 | #endif |
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[623] | 369 | this->errno = ENFILE; |
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| 370 | return -1; |
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| 371 | } |
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[611] | 372 | |
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[623] | 373 | // get target inode cluster and local pointer |
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| 374 | inode_cxy = GET_CXY( inode_xp ); |
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| 375 | inode_ptr = GET_PTR( inode_xp ); |
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[611] | 376 | |
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[623] | 377 | // get extended pointer on target mapper |
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| 378 | mapper_ptr = hal_remote_lpt( XPTR( inode_cxy , &inode_ptr->mapper ) ); |
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| 379 | mapper_xp = XPTR( inode_cxy , mapper_ptr ); |
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[611] | 380 | |
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[623] | 381 | // display mapper |
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| 382 | error = mapper_display_page( mapper_xp , page_id , nbytes ); |
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[611] | 383 | |
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[623] | 384 | if( error ) |
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| 385 | { |
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[611] | 386 | |
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| 387 | #if DEBUG_SYSCALLS_ERROR |
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| 388 | printk("\n[ERROR] in %s for MAPPER : cannot display page %d\n", |
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| 389 | __FUNCTION__ , page_id ); |
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| 390 | #endif |
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[623] | 391 | this->errno = ENFILE; |
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| 392 | return -1; |
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| 393 | } |
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[440] | 394 | |
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[623] | 395 | break; |
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| 396 | } |
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| 397 | ///////////////////// |
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| 398 | case DISPLAY_BARRIER: |
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| 399 | { |
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| 400 | // get target process PID |
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| 401 | pid_t pid = (pid_t)arg0; |
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| 402 | |
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| 403 | // get pointers on owner process |
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| 404 | xptr_t process_xp = cluster_get_reference_process_from_pid( pid ); |
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| 405 | process_t * process_ptr = GET_PTR( process_xp ); |
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| 406 | cxy_t process_cxy = GET_CXY( process_xp ); |
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| 407 | |
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| 408 | if( process_xp == XPTR_NULL ) |
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| 409 | { |
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| 410 | |
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[440] | 411 | #if DEBUG_SYSCALLS_ERROR |
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[623] | 412 | printk("\n[ERROR] in %s for BARRIER : process %x not found\n", |
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| 413 | __FUNCTION__ , pid ); |
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| 414 | #endif |
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| 415 | this->errno = EINVAL; |
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| 416 | return -1; |
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| 417 | } |
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| 418 | |
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| 419 | // get extended pointer on root of list of barriers |
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| 420 | xptr_t root_xp = XPTR( process_cxy , &process_ptr->barrier_root ); |
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| 421 | |
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| 422 | if( xlist_is_empty( root_xp ) ) |
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| 423 | { |
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| 424 | |
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| 425 | #if DEBUG_SYSCALLS_ERROR |
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| 426 | printk("\n[ERROR] in %s for BARRIER : no registered barrier in process %x\n", |
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| 427 | __FUNCTION__ , pid ); |
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| 428 | #endif |
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| 429 | this->errno = EINVAL; |
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| 430 | return -1; |
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| 431 | } |
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| 432 | |
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| 433 | // get extended pointer on first registered generic barrier descriptor |
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| 434 | xptr_t gen_barrier_xp = XLIST_FIRST( root_xp , generic_barrier_t , list ); |
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| 435 | |
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| 436 | // display barrier state |
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| 437 | generic_barrier_display( gen_barrier_xp ); |
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| 438 | |
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| 439 | break; |
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| 440 | } |
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| 441 | //////// |
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| 442 | default: |
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| 443 | { |
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| 444 | |
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| 445 | #if DEBUG_SYSCALLS_ERROR |
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[580] | 446 | printk("\n[ERROR] in %s : undefined display type %d\n", |
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| 447 | __FUNCTION__ , type ); |
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[440] | 448 | #endif |
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[623] | 449 | this->errno = EINVAL; |
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| 450 | return -1; |
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| 451 | } |
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| 452 | } // end switch on type |
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[421] | 453 | |
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[594] | 454 | #if (DEBUG_SYS_DISPLAY || CONFIG_INSTRUMENTATION_SYSCALLS) |
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| 455 | uint64_t tm_end = hal_get_cycles(); |
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| 456 | #endif |
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| 457 | |
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[438] | 458 | #if DEBUG_SYS_DISPLAY |
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| 459 | if( DEBUG_SYS_DISPLAY < tm_end ) |
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[619] | 460 | printk("\n[%s] thread[%x,%x] exit / cycle %d\n", |
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[594] | 461 | __FUNCTION__, process->pid, this->trdid, (uint32_t)tm_end ); |
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[433] | 462 | #endif |
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| 463 | |
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[594] | 464 | #if CONFIG_INSTRUMENTATION_SYSCALLS |
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| 465 | hal_atomic_add( &syscalls_cumul_cost[SYS_DISPLAY] , tm_end - tm_start ); |
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| 466 | hal_atomic_add( &syscalls_occurences[SYS_DISPLAY] , 1 ); |
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| 467 | #endif |
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| 468 | |
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[433] | 469 | return 0; |
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| 470 | |
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| 471 | } // end sys_display() |
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