[469] | 1 | ///////////////////////////////////////////////////////////////////////////////////////// |
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[407] | 2 | // File : ksh.c |
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| 3 | // Date : October 2017 |
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| 4 | // Author : Alain Greiner |
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[469] | 5 | ///////////////////////////////////////////////////////////////////////////////////////// |
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[457] | 6 | // This application implements a minimal shell for ALMOS-MKH. |
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| 7 | // |
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[636] | 8 | // This user process contains two POSIX threads: |
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[446] | 9 | // - the "main" thread contains the infinite loop implementing |
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[574] | 10 | // the children processes termination monitoring, using the wait() syscall. |
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[469] | 11 | // - the "interactive" thread contains the infinite loop implementing the command |
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| 12 | // interpreter attached to the TXT terminal, and handling one KSH command |
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| 13 | // per iteration. |
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[457] | 14 | // |
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[469] | 15 | // The children processes are created by the <load> command, and are |
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[624] | 16 | // attached to the same TXT terminal as the parent KSH process. |
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[626] | 17 | // A child process can be launched in foreground or in background: |
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[624] | 18 | // . when the child process is launched in foreground, the KSH process loses |
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[469] | 19 | // the TXT terminal ownership, that is transfered to the child process. |
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[624] | 20 | // . when the child process is launched in background, the KSH process keeps |
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[469] | 21 | // the TXT terminal ownership. |
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| 22 | // |
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[619] | 23 | // We use a semaphore to synchronize the two KSH threads. After each command |
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| 24 | // completion, the interactive thread check the TXT ownership (with a sem_wait), |
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| 25 | // and blocks, if the KSH process loosed the TXT ownership (after a load, |
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| 26 | // or for any other cause). It is unblocked with the following policy: |
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[469] | 27 | // . if the command is "not a load", the semaphore is incremented by the |
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[619] | 28 | // cmd_***() function when the command is completed, to get the next command |
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| 29 | // in the while loop. |
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[469] | 30 | // . if the command is a "load without &", the TXT is given to the NEW process by the |
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| 31 | // execve() syscall, and is released to the KSH process when NEW process terminates. |
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| 32 | // The KSH process is notified and the KSH main() function increments the semahore |
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| 33 | // to allow the KSH interactive() function to handle commands. |
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| 34 | // . if the command is a "load with &", the cmd_load() function returns the TXT |
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| 35 | // to the KSH process and increment the semaphore, when the parent KSH process |
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| 36 | // returns from the fork() syscall. |
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| 37 | ///////////////////////////////////////////////////////////////////////////////////////// |
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[230] | 38 | |
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| 39 | #include <stdio.h> |
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| 40 | #include <stdlib.h> |
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| 41 | #include <string.h> |
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[444] | 42 | #include <sys/wait.h> |
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| 43 | #include <signal.h> |
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| 44 | #include <unistd.h> |
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[611] | 45 | #include <dirent.h> |
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[445] | 46 | #include <almosmkh.h> |
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[457] | 47 | #include <semaphore.h> |
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[588] | 48 | #include <hal_macros.h> |
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[596] | 49 | #include <sys/stat.h> |
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| 50 | #include <sys/mman.h> |
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| 51 | #include <fcntl.h> |
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[659] | 52 | #include <shared_syscalls.h> |
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[230] | 53 | |
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[682] | 54 | #define BUF_MAX_SIZE (4096) // max number of bytes for k <-> u data transfer |
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[659] | 55 | #define CMD_MAX_SIZE (256) // max number of characters in one command |
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| 56 | #define LOG_DEPTH (32) // max number of registered commands |
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| 57 | #define MAX_ARGS (32) // max number of arguments in a command |
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| 58 | #define PATH_MAX_SIZE (256) // max number of characters in a pathname |
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[230] | 59 | |
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[611] | 60 | #define DEBUG_MAIN 0 |
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[625] | 61 | #define DEBUG_EXECUTE 0 |
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[624] | 62 | #define DEBUG_CMD_CAT 0 |
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[611] | 63 | #define DEBUG_CMD_CP 0 |
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[652] | 64 | #define DEBUG_CMD_LOAD 0 |
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[611] | 65 | #define DEBUG_CMD_LS 0 |
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[619] | 66 | #define DEBUG_CMD_PS 0 |
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[457] | 67 | |
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[469] | 68 | ////////////////////////////////////////////////////////////////////////////////////////// |
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[407] | 69 | // Structures |
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[469] | 70 | ////////////////////////////////////////////////////////////////////////////////////////// |
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[230] | 71 | |
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[407] | 72 | // one entry in the registered commands array |
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| 73 | typedef struct log_entry_s |
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| 74 | { |
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| 75 | char buf[CMD_MAX_SIZE]; |
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| 76 | unsigned int count; |
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| 77 | } |
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| 78 | log_entry_t; |
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[230] | 79 | |
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[407] | 80 | // one entry in the supported command types array |
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| 81 | typedef struct ksh_cmd_s |
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| 82 | { |
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| 83 | char * name; |
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| 84 | char * desc; |
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| 85 | void (*fn)( int , char ** ); |
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| 86 | } |
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| 87 | ksh_cmd_t; |
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| 88 | |
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| 89 | |
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[469] | 90 | ////////////////////////////////////////////////////////////////////////////////////////// |
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[230] | 91 | // Global Variables |
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[469] | 92 | ////////////////////////////////////////////////////////////////////////////////////////// |
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[230] | 93 | |
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[625] | 94 | ksh_cmd_t command[]; // array of supported commands |
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[230] | 95 | |
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[625] | 96 | log_entry_t log_entries[LOG_DEPTH]; // array of registered commands |
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[230] | 97 | |
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[625] | 98 | unsigned int ptw; // write pointer in log_entries[] |
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| 99 | unsigned int ptr; // read pointer in log_entries[] |
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[230] | 100 | |
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[625] | 101 | pthread_attr_t attr; // interactive thread attributes |
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[446] | 102 | |
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[625] | 103 | sem_t semaphore; // block interactive thread when zero |
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[457] | 104 | |
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[625] | 105 | pthread_t trdid; // interactive thread identifier |
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| 106 | |
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[676] | 107 | char cmd[CMD_MAX_SIZE]; // buffer for one command |
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| 108 | |
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| 109 | char elf_path[PATH_MAX_SIZE]; // pathname for cmd_load command |
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| 110 | |
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[625] | 111 | char pathname[PATH_MAX_SIZE]; // pathname for a file |
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| 112 | |
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[676] | 113 | char pathnew[PATH_MAX_SIZE]; // used by the cmd_rename command |
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[619] | 114 | |
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[676] | 115 | char string[256]; // used by snprintf() for debug |
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[635] | 116 | |
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[469] | 117 | ////////////////////////////////////////////////////////////////////////////////////////// |
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[230] | 118 | // Shell Commands |
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[469] | 119 | ////////////////////////////////////////////////////////////////////////////////////////// |
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[230] | 120 | |
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[407] | 121 | ///////////////////////////////////////////// |
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| 122 | static void cmd_cat( int argc , char **argv ) |
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[230] | 123 | { |
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[611] | 124 | struct stat st; |
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[596] | 125 | int fd; |
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| 126 | int size; |
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| 127 | char * buf; |
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[230] | 128 | |
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[619] | 129 | #if DEBUG_CMD_CAT |
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[676] | 130 | printf("\n[ksh] %s enters" , __FUNCTION__); |
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[619] | 131 | #endif |
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| 132 | |
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[407] | 133 | if (argc != 2) |
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| 134 | { |
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[409] | 135 | printf(" usage: cat pathname\n"); |
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[623] | 136 | |
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| 137 | sem_post( &semaphore ); |
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| 138 | return; |
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[596] | 139 | } |
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[407] | 140 | |
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[625] | 141 | strcpy( pathname , argv[1] ); |
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[230] | 142 | |
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[635] | 143 | #if DEBUG_CMD_CAT |
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[676] | 144 | printf("\n[ksh] %s : after strcpy" , __FUNCTION__ ); |
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[635] | 145 | #endif |
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| 146 | |
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[596] | 147 | // open the file |
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[625] | 148 | fd = open( pathname , O_RDONLY , 0 ); |
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[596] | 149 | if (fd < 0) |
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| 150 | { |
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[625] | 151 | printf(" error: cannot open file <%s>\n", pathname ); |
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[623] | 152 | |
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| 153 | sem_post( &semaphore ); |
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| 154 | return; |
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[596] | 155 | } |
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[407] | 156 | |
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[611] | 157 | #if DEBUG_CMD_CAT |
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[676] | 158 | printf("\n[ksh] %s : file %s open", __FUNCTION__, pathname ); |
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[596] | 159 | #endif |
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| 160 | |
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| 161 | // get file stats |
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[625] | 162 | if ( stat( pathname , &st ) == -1) |
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[407] | 163 | { |
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[625] | 164 | printf(" error: cannot stat <%s>\n", pathname ); |
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[623] | 165 | |
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| 166 | close(fd); |
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| 167 | sem_post( &semaphore ); |
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| 168 | return; |
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[596] | 169 | } |
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[230] | 170 | |
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[596] | 171 | if ( S_ISDIR(st.st_mode) ) |
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[407] | 172 | { |
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[625] | 173 | printf(" error: <%s> is a directory\n", pathname ); |
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[623] | 174 | |
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| 175 | close(fd); |
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| 176 | sem_post( &semaphore ); |
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| 177 | return; |
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[596] | 178 | } |
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[230] | 179 | |
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[596] | 180 | // get file size |
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| 181 | size = st.st_size; |
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[230] | 182 | |
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[611] | 183 | #if DEBUG_CMD_CAT |
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[676] | 184 | printf("\n[ksh] %s : size = %d", __FUNCTION__, size ); |
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[596] | 185 | #endif |
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[230] | 186 | |
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[623] | 187 | if( size == 0 ) |
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| 188 | { |
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[625] | 189 | printf(" error: size = 0 for <%s>\n", pathname ); |
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[623] | 190 | |
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| 191 | close(fd); |
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| 192 | sem_post( &semaphore ); |
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| 193 | return; |
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| 194 | } |
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| 195 | |
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| 196 | // mapping type is MAP_FILE when MAP_ANON and MAP_REMOTE are not specified |
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[596] | 197 | buf = mmap( NULL , size , PROT_READ|PROT_WRITE , MAP_PRIVATE , fd , 0 ); |
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[230] | 198 | |
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[596] | 199 | if ( buf == NULL ) |
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| 200 | { |
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[625] | 201 | printf(" error: cannot map file <%s>\n", pathname ); |
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[623] | 202 | |
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| 203 | close(fd); |
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| 204 | sem_post( &semaphore ); |
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| 205 | return; |
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[596] | 206 | } |
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| 207 | |
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[611] | 208 | #if DEBUG_CMD_CAT |
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[676] | 209 | printf("\n[ksh] %s : mapped file %d to buffer %x", __FUNCTION__, fd , buf ); |
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[596] | 210 | #endif |
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| 211 | |
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| 212 | // display the file content on TXT terminal |
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| 213 | write( 1 , buf , size ); |
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| 214 | |
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[641] | 215 | // unmap the file |
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[623] | 216 | if( munmap( buf , size ) ) |
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| 217 | { |
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[625] | 218 | printf(" error: cannot unmap file <%s>\n", pathname ); |
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[623] | 219 | } |
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[596] | 220 | |
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[623] | 221 | #if DEBUG_CMD_CAT |
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[676] | 222 | printf("\n[ksh] %s : unmapped file %d from buffer %x", __FUNCTION__, fd , buf ); |
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[623] | 223 | #endif |
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[596] | 224 | |
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[623] | 225 | // close the file |
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| 226 | if( close( fd ) ) |
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| 227 | { |
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[625] | 228 | printf(" error: cannot close file <%s>\n", pathname ); |
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[623] | 229 | } |
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[596] | 230 | |
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[457] | 231 | // release semaphore to get next command |
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| 232 | sem_post( &semaphore ); |
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| 233 | |
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[407] | 234 | } // end cmd_cat() |
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| 235 | |
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| 236 | //////////////////////////////////////////// |
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| 237 | static void cmd_cd( int argc , char **argv ) |
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| 238 | { |
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| 239 | if (argc != 2) |
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| 240 | { |
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[409] | 241 | printf(" usage: cd pathname\n"); |
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[407] | 242 | } |
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[596] | 243 | else |
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| 244 | { |
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[625] | 245 | strcpy( pathname , argv[1] ); |
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[407] | 246 | |
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[610] | 247 | // call the relevant syscall |
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[625] | 248 | if( chdir( pathname ) ) |
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[610] | 249 | { |
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[625] | 250 | printf(" error: cannot found <%s> directory\n", pathname ); |
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[610] | 251 | } |
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[596] | 252 | } |
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[407] | 253 | |
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[457] | 254 | // release semaphore to get next command |
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| 255 | sem_post( &semaphore ); |
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[407] | 256 | |
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| 257 | } // end cmd_cd() |
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| 258 | |
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| 259 | ///////////////////////////////////////// |
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[230] | 260 | static void cmd_cp(int argc, char **argv) |
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| 261 | { |
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[611] | 262 | int src_fd; |
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| 263 | int dst_fd; |
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| 264 | int size; // source file size |
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| 265 | int bytes; // number of transfered bytes |
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| 266 | char buf[4096]; |
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| 267 | struct stat st; |
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[230] | 268 | |
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[619] | 269 | #if DEBUG_CMD_CP |
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[676] | 270 | printf("\n[ksh] enter %s" , __FUNCTION__); |
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[619] | 271 | #endif |
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| 272 | |
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[407] | 273 | if (argc != 3) |
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| 274 | { |
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[596] | 275 | src_fd = -1; |
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| 276 | dst_fd = -1; |
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[409] | 277 | printf(" usage: cp src_pathname dst_pathname\n"); |
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[611] | 278 | goto cmd_cp_exit; |
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[230] | 279 | } |
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| 280 | |
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[596] | 281 | // open the src file |
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[625] | 282 | strcpy( pathname , argv[1] ); |
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| 283 | src_fd = open( pathname , O_RDONLY , 0 ); |
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[230] | 284 | |
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[596] | 285 | if ( src_fd < 0 ) |
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| 286 | { |
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| 287 | dst_fd = -1; |
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[625] | 288 | printf(" error: cannot open <%s>\n", argv[1] ); |
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[611] | 289 | goto cmd_cp_exit; |
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[596] | 290 | } |
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[230] | 291 | |
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[611] | 292 | #if DEBUG_CMD_CP |
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[676] | 293 | printf("\n[ksh] %s : file %s open", __FUNCTION__, argv[1] ); |
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[610] | 294 | #endif |
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| 295 | |
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[596] | 296 | // get file stats |
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[625] | 297 | if ( stat( pathname , &st ) ) |
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[596] | 298 | { |
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| 299 | dst_fd = -1; |
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[625] | 300 | printf(" error: cannot stat <%s>\n", argv[1] ); |
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[611] | 301 | goto cmd_cp_exit; |
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[596] | 302 | } |
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| 303 | |
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[611] | 304 | #if DEBUG_CMD_CP |
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[676] | 305 | printf("\n[ksh] %s : got stats for %s", __FUNCTION__, argv[1] ); |
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[610] | 306 | #endif |
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| 307 | |
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[596] | 308 | if ( S_ISDIR(st.st_mode) ) |
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| 309 | { |
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| 310 | dst_fd = -1; |
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[625] | 311 | printf(" error: <%s> is a directory\n", argv[1] ); |
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[611] | 312 | goto cmd_cp_exit; |
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[230] | 313 | } |
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[596] | 314 | |
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| 315 | // get src file size |
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[230] | 316 | size = st.st_size; |
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| 317 | |
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[407] | 318 | // open the dst file |
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[625] | 319 | strcpy( pathname , argv[2] ); |
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| 320 | dst_fd = open( pathname , O_CREAT|O_TRUNC|O_RDWR , 0 ); |
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[596] | 321 | |
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| 322 | if ( dst_fd < 0 ) |
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| 323 | { |
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[625] | 324 | printf(" error: cannot open <%s>\n", argv[2] ); |
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[611] | 325 | goto cmd_cp_exit; |
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[230] | 326 | } |
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[596] | 327 | |
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[611] | 328 | #if DEBUG_CMD_CP |
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[676] | 329 | printf("\n[ksh] %s : file %s open", __FUNCTION__, argv[2] ); |
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[610] | 330 | #endif |
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| 331 | |
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[625] | 332 | if ( stat( pathname , &st ) ) |
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[596] | 333 | { |
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[625] | 334 | printf(" error: cannot stat <%s>\n", argv[2] ); |
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[611] | 335 | goto cmd_cp_exit; |
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[230] | 336 | } |
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[596] | 337 | |
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[611] | 338 | #if DEBUG_CMD_CP |
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[676] | 339 | printf("\n[ksh] %s : got stats for %s", __FUNCTION__, argv[2] ); |
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[610] | 340 | #endif |
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| 341 | |
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[596] | 342 | if ( S_ISDIR(st.st_mode ) ) |
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| 343 | { |
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[625] | 344 | printf(" error: <%s> is a directory\n", argv[2] ); |
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[611] | 345 | goto cmd_cp_exit; |
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[230] | 346 | } |
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| 347 | |
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[596] | 348 | bytes = 0; |
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| 349 | |
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| 350 | while (bytes < size) |
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[230] | 351 | { |
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[608] | 352 | int len = ((size - bytes) < 4096) ? (size - bytes) : 4096; |
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[230] | 353 | |
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[407] | 354 | // read the source |
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[608] | 355 | if ( read( src_fd , buf , len ) != len ) |
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[596] | 356 | { |
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[625] | 357 | printf(" error: cannot read from file <%s>\n", argv[1] ); |
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[611] | 358 | goto cmd_cp_exit; |
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[230] | 359 | } |
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| 360 | |
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[611] | 361 | #if DEBUG_CMD_CP |
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[676] | 362 | printf("\n[ksh] %s : read %d bytes from %s", __FUNCTION__, len, argv[1] ); |
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[610] | 363 | #endif |
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| 364 | |
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[407] | 365 | // write to the destination |
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[608] | 366 | if ( write( dst_fd , buf , len ) != len ) |
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[596] | 367 | { |
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[625] | 368 | printf(" error: cannot write to file <%s>\n", argv[2] ); |
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[611] | 369 | goto cmd_cp_exit; |
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[230] | 370 | } |
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| 371 | |
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[611] | 372 | #if DEBUG_CMD_CP |
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[676] | 373 | printf("\n[ksh] %s : write %d bytes to %s", __FUNCTION__, len, argv[2] ); |
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[610] | 374 | #endif |
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| 375 | |
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[608] | 376 | bytes += len; |
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[230] | 377 | } |
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| 378 | |
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[611] | 379 | cmd_cp_exit: |
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[596] | 380 | |
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[407] | 381 | if (src_fd >= 0) close(src_fd); |
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| 382 | if (dst_fd >= 0) close(dst_fd); |
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[230] | 383 | |
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[457] | 384 | // release semaphore to get next command |
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| 385 | sem_post( &semaphore ); |
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| 386 | |
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[407] | 387 | } // end cmd_cp() |
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| 388 | |
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[436] | 389 | ///////////////////////////////////////////////// |
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| 390 | static void cmd_display( int argc , char **argv ) |
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| 391 | { |
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[596] | 392 | if( argc < 2 ) |
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[436] | 393 | { |
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[640] | 394 | printf(" usage: display vmm cxy pid mapping\n" |
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[626] | 395 | " display sched cxy lid\n" |
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[611] | 396 | " display process cxy\n" |
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| 397 | " display txt txtid\n" |
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| 398 | " display vfs\n" |
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| 399 | " display chdev\n" |
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| 400 | " display dqdt\n" |
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[626] | 401 | " display locks pid trdid\n" |
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[623] | 402 | " display barrier pid\n" |
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[626] | 403 | " display mapper path page nbytes\n" |
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[657] | 404 | " display fat min nslots\n" |
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[659] | 405 | " display fat cxy 0\n" |
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[676] | 406 | " display socket pid fdid\n" |
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| 407 | " display fd pid\n" |
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| 408 | " display fbf pid\n" ); |
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[596] | 409 | } |
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| 410 | //////////////////////////////////// |
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| 411 | else if( strcmp( argv[1] , "vmm" ) == 0 ) |
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| 412 | { |
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[640] | 413 | if( argc != 5 ) |
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[436] | 414 | { |
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[640] | 415 | printf(" usage: display vmm cxy pid mapping\n"); |
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[436] | 416 | } |
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[596] | 417 | else |
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| 418 | { |
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| 419 | unsigned int cxy = atoi(argv[2]); |
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| 420 | unsigned int pid = atoi(argv[3]); |
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[640] | 421 | unsigned int map = atoi(argv[4]); |
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[436] | 422 | |
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[640] | 423 | if( display_vmm( cxy , pid , map ) ) |
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[596] | 424 | { |
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| 425 | printf(" error: no process %x in cluster %x\n", pid , cxy ); |
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| 426 | } |
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[436] | 427 | } |
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| 428 | } |
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[596] | 429 | /////////////////////////////////////////// |
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[436] | 430 | else if( strcmp( argv[1] , "sched" ) == 0 ) |
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| 431 | { |
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| 432 | if( argc != 4 ) |
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| 433 | { |
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| 434 | printf(" usage: display sched cxy lid\n"); |
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| 435 | } |
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[596] | 436 | else |
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| 437 | { |
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| 438 | unsigned int cxy = atoi(argv[2]); |
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| 439 | unsigned int lid = atoi(argv[3]); |
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[436] | 440 | |
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[596] | 441 | if( display_sched( cxy , lid ) ) |
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| 442 | { |
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| 443 | printf(" error: illegal arguments cxy = %x / lid = %d\n", cxy, lid ); |
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| 444 | } |
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[436] | 445 | } |
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| 446 | } |
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[596] | 447 | ///////////////////////////////////////////// |
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[436] | 448 | else if( strcmp( argv[1] , "process" ) == 0 ) |
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| 449 | { |
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| 450 | if( argc != 3 ) |
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| 451 | { |
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| 452 | printf(" usage: display process cxy\n"); |
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| 453 | } |
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[596] | 454 | else |
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| 455 | { |
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| 456 | unsigned int cxy = atoi(argv[2]); |
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[436] | 457 | |
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[596] | 458 | if( display_cluster_processes( cxy , 0 ) ) |
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| 459 | { |
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| 460 | printf(" error: illegal argument cxy = %x\n", cxy ); |
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| 461 | } |
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[436] | 462 | } |
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| 463 | } |
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[596] | 464 | ///////////////////////////////////////// |
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[436] | 465 | else if( strcmp( argv[1] , "txt" ) == 0 ) |
---|
| 466 | { |
---|
| 467 | if( argc != 3 ) |
---|
| 468 | { |
---|
| 469 | printf(" usage: display txt txt_id\n"); |
---|
| 470 | } |
---|
[596] | 471 | else |
---|
| 472 | { |
---|
| 473 | unsigned int txtid = atoi(argv[2]); |
---|
[436] | 474 | |
---|
[596] | 475 | if( display_txt_processes( txtid ) ) |
---|
| 476 | { |
---|
| 477 | printf(" error: illegal argument txtid = %d\n", txtid ); |
---|
| 478 | } |
---|
[436] | 479 | } |
---|
| 480 | } |
---|
[596] | 481 | ///////////////////////////////////////// |
---|
[436] | 482 | else if( strcmp( argv[1] , "vfs" ) == 0 ) |
---|
| 483 | { |
---|
| 484 | if( argc != 2 ) |
---|
| 485 | { |
---|
| 486 | printf(" usage: display vfs\n"); |
---|
| 487 | } |
---|
[596] | 488 | else |
---|
| 489 | { |
---|
| 490 | display_vfs(); |
---|
| 491 | } |
---|
[436] | 492 | } |
---|
[596] | 493 | ////////////////////////////////////////// |
---|
[436] | 494 | else if( strcmp( argv[1] , "chdev" ) == 0 ) |
---|
| 495 | { |
---|
| 496 | if( argc != 2 ) |
---|
| 497 | { |
---|
| 498 | printf(" usage: display chdev\n"); |
---|
| 499 | } |
---|
[596] | 500 | else |
---|
| 501 | { |
---|
| 502 | display_chdev(); |
---|
| 503 | } |
---|
[436] | 504 | } |
---|
[596] | 505 | ////////////////////////////////////////// |
---|
[445] | 506 | else if( strcmp( argv[1] , "dqdt" ) == 0 ) |
---|
| 507 | { |
---|
| 508 | if( argc != 2 ) |
---|
| 509 | { |
---|
| 510 | printf(" usage: display dqdt\n"); |
---|
| 511 | } |
---|
[596] | 512 | else |
---|
| 513 | { |
---|
| 514 | display_dqdt(); |
---|
| 515 | } |
---|
| 516 | } |
---|
| 517 | /////////////////////////////////////////// |
---|
| 518 | else if( strcmp( argv[1] , "locks" ) == 0 ) |
---|
| 519 | { |
---|
| 520 | if( argc != 4 ) |
---|
| 521 | { |
---|
| 522 | printf(" usage: display locks pid trdid\n"); |
---|
| 523 | } |
---|
| 524 | else |
---|
| 525 | { |
---|
| 526 | unsigned int pid = atoi(argv[2]); |
---|
| 527 | unsigned int trdid = atoi(argv[3]); |
---|
[445] | 528 | |
---|
[596] | 529 | if( display_busylocks( pid , trdid ) ) |
---|
| 530 | { |
---|
| 531 | printf(" error: illegal arguments pid = %x / trdid = %x\n", pid, trdid ); |
---|
| 532 | } |
---|
| 533 | } |
---|
[445] | 534 | } |
---|
[623] | 535 | ///////////////////////////////////////////////// |
---|
| 536 | else if( strcmp( argv[1] , "barrier" ) == 0 ) |
---|
| 537 | { |
---|
| 538 | if( argc != 3 ) |
---|
| 539 | { |
---|
| 540 | printf(" usage: display barrier pid\n"); |
---|
| 541 | } |
---|
| 542 | else |
---|
| 543 | { |
---|
| 544 | unsigned int pid = atoi(argv[2]); |
---|
| 545 | |
---|
| 546 | if( display_barrier( pid ) ) |
---|
| 547 | { |
---|
| 548 | printf(" error: illegal arguments pid = %x\n", pid ); |
---|
| 549 | } |
---|
| 550 | } |
---|
| 551 | } |
---|
[611] | 552 | /////////////////////////////////////////// |
---|
| 553 | else if( strcmp( argv[1] , "mapper" ) == 0 ) |
---|
| 554 | { |
---|
| 555 | if( argc != 5 ) |
---|
| 556 | { |
---|
| 557 | printf(" usage: display mapper path page_id nbytes\n"); |
---|
| 558 | } |
---|
| 559 | else |
---|
| 560 | { |
---|
| 561 | unsigned int page_id = atoi(argv[3]); |
---|
| 562 | unsigned int nbytes = atoi(argv[4]); |
---|
| 563 | |
---|
| 564 | if( display_mapper( argv[2] , page_id, nbytes ) ) |
---|
| 565 | { |
---|
| 566 | printf(" error: cannot display page %d of mapper %s\n", page_id, argv[2] ); |
---|
| 567 | } |
---|
| 568 | } |
---|
| 569 | } |
---|
[676] | 570 | ///////////////////////////////////////// |
---|
[626] | 571 | else if( strcmp( argv[1] , "fat" ) == 0 ) |
---|
| 572 | { |
---|
| 573 | if( argc != 4 ) |
---|
| 574 | { |
---|
[657] | 575 | printf(" usage: display fat min_slot nb_slots\n"); |
---|
[626] | 576 | } |
---|
| 577 | else |
---|
| 578 | { |
---|
[657] | 579 | unsigned int min_slot = atoi(argv[2]); |
---|
| 580 | unsigned int nb_slots = atoi(argv[3]); |
---|
[626] | 581 | |
---|
[657] | 582 | if( display_fat( min_slot, nb_slots ) ) |
---|
[626] | 583 | { |
---|
[657] | 584 | printf(" error: cannot display fat\n"); |
---|
[626] | 585 | } |
---|
| 586 | } |
---|
| 587 | } |
---|
[676] | 588 | //////////////////////////////////////////// |
---|
[659] | 589 | else if( strcmp( argv[1] , "socket" ) == 0 ) |
---|
| 590 | { |
---|
| 591 | if( argc != 4 ) |
---|
| 592 | { |
---|
| 593 | printf(" usage: display socket pid fdid\n"); |
---|
| 594 | } |
---|
| 595 | else |
---|
| 596 | { |
---|
| 597 | unsigned int pid = atoi(argv[2]); |
---|
| 598 | unsigned int fdid = atoi(argv[3]); |
---|
| 599 | |
---|
| 600 | if( display_socket( pid , fdid ) ) |
---|
| 601 | { |
---|
| 602 | printf(" error: cannot found socket[%x,%d]\n", pid, fdid ); |
---|
| 603 | } |
---|
| 604 | } |
---|
| 605 | } |
---|
[676] | 606 | //////////////////////////////////////// |
---|
| 607 | else if( strcmp( argv[1] , "fd" ) == 0 ) |
---|
| 608 | { |
---|
| 609 | if( argc != 3 ) |
---|
| 610 | { |
---|
| 611 | printf(" usage: display fd pid\n"); |
---|
| 612 | } |
---|
| 613 | else |
---|
| 614 | { |
---|
| 615 | unsigned int pid = atoi(argv[2]); |
---|
| 616 | |
---|
| 617 | if( display_fd_array( pid ) ) |
---|
| 618 | { |
---|
| 619 | printf(" error: cannot found process %x\n", pid ); |
---|
| 620 | } |
---|
| 621 | } |
---|
| 622 | } |
---|
| 623 | //////////////////////////////////////// |
---|
| 624 | else if( strcmp( argv[1] , "fbf" ) == 0 ) |
---|
| 625 | { |
---|
| 626 | if( argc != 3 ) |
---|
| 627 | { |
---|
| 628 | printf(" usage: display fbf pid\n" |
---|
| 629 | " display fbf 0 (all processes)"); |
---|
| 630 | } |
---|
| 631 | else |
---|
| 632 | { |
---|
| 633 | unsigned int pid = atoi(argv[2]); |
---|
| 634 | |
---|
| 635 | if( display_fbf_windows( pid ) ) |
---|
| 636 | { |
---|
| 637 | printf(" error: cannot found process %x\n", pid ); |
---|
| 638 | } |
---|
| 639 | } |
---|
| 640 | } |
---|
[659] | 641 | //// |
---|
[436] | 642 | else |
---|
| 643 | { |
---|
[596] | 644 | printf(" error: undefined display request : %s\n", argv[1] ); |
---|
| 645 | } |
---|
[457] | 646 | |
---|
| 647 | // release semaphore to get next command |
---|
| 648 | sem_post( &semaphore ); |
---|
| 649 | |
---|
[436] | 650 | } // end cmd_display() |
---|
| 651 | |
---|
[427] | 652 | ///////////////////////////////////////// |
---|
| 653 | static void cmd_fg(int argc, char **argv) |
---|
| 654 | { |
---|
| 655 | unsigned int pid; |
---|
| 656 | |
---|
| 657 | if (argc != 2) |
---|
| 658 | { |
---|
[676] | 659 | printf(" usage: fg pid\n"); |
---|
[427] | 660 | } |
---|
[596] | 661 | else |
---|
[427] | 662 | { |
---|
[596] | 663 | pid = atoi( argv[1] ); |
---|
[427] | 664 | |
---|
[596] | 665 | if( pid == 0 ) |
---|
| 666 | { |
---|
| 667 | printf(" error: PID cannot be 0\n" ); |
---|
| 668 | } |
---|
| 669 | else if( fg( pid ) ) |
---|
| 670 | { |
---|
| 671 | printf(" error: cannot find process %x\n", pid ); |
---|
| 672 | } |
---|
| 673 | } |
---|
[457] | 674 | |
---|
| 675 | // release semaphore to get next command |
---|
| 676 | sem_post( &semaphore ); |
---|
| 677 | |
---|
[436] | 678 | } // end cmd_fg() |
---|
[427] | 679 | |
---|
[407] | 680 | ////////////////////////////////////////////// |
---|
| 681 | static void cmd_help( int argc , char **argv ) |
---|
[230] | 682 | { |
---|
[407] | 683 | unsigned int i; |
---|
[230] | 684 | |
---|
[676] | 685 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
[407] | 686 | { |
---|
[676] | 687 | printf(" usage: help\n"); |
---|
[230] | 688 | } |
---|
[596] | 689 | else |
---|
[407] | 690 | { |
---|
[619] | 691 | printf("available commands:\n"); |
---|
| 692 | for (i = 0 ; command[i].name ; i++) |
---|
[596] | 693 | { |
---|
[619] | 694 | printf("\t%s\t : %s\n", command[i].name , command[i].desc); |
---|
[596] | 695 | } |
---|
| 696 | } |
---|
[457] | 697 | |
---|
| 698 | // release semaphore to get next command |
---|
| 699 | sem_post( &semaphore ); |
---|
| 700 | |
---|
[407] | 701 | } // end cmd_help() |
---|
[230] | 702 | |
---|
[676] | 703 | ///////////////////////////////////////////////// |
---|
| 704 | static void cmd_history( int argc , char **argv ) |
---|
| 705 | { |
---|
| 706 | unsigned int i; |
---|
| 707 | |
---|
| 708 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
| 709 | { |
---|
| 710 | printf(" usage: history\n"); |
---|
| 711 | } |
---|
| 712 | else |
---|
| 713 | { |
---|
| 714 | printf("--- registered commands ---\n"); |
---|
| 715 | for (i = 0; i < LOG_DEPTH; i++) |
---|
| 716 | { |
---|
| 717 | printf(" - %d\t: %s\n", i, &log_entries[i].buf); |
---|
| 718 | } |
---|
| 719 | } |
---|
| 720 | |
---|
| 721 | // release semaphore to get next command |
---|
| 722 | sem_post( &semaphore ); |
---|
| 723 | |
---|
| 724 | } // end cmd_history() |
---|
| 725 | |
---|
[407] | 726 | ////////////////////////////////////////////// |
---|
| 727 | static void cmd_kill( int argc , char **argv ) |
---|
[230] | 728 | { |
---|
[407] | 729 | unsigned int pid; |
---|
[230] | 730 | |
---|
[407] | 731 | if (argc != 2) |
---|
| 732 | { |
---|
[676] | 733 | printf(" usage: kill pid\n", argv[0]); |
---|
[230] | 734 | } |
---|
[596] | 735 | else |
---|
| 736 | { |
---|
| 737 | pid = atoi( argv[1] ); |
---|
[230] | 738 | |
---|
[596] | 739 | if( pid == 0 ) |
---|
| 740 | { |
---|
| 741 | printf(" error: kernel process 0 cannot be killed\n" ); |
---|
| 742 | } |
---|
[230] | 743 | |
---|
[596] | 744 | else if( kill( pid , SIGKILL ) ) |
---|
| 745 | { |
---|
| 746 | printf(" error: process %x cannot be killed\n", pid ); |
---|
| 747 | } |
---|
| 748 | } |
---|
[427] | 749 | |
---|
[457] | 750 | // release semaphore to get next command |
---|
| 751 | sem_post( &semaphore ); |
---|
| 752 | |
---|
[407] | 753 | } // end cmd_kill() |
---|
[230] | 754 | |
---|
[407] | 755 | ////////////////////////////////////////////// |
---|
| 756 | static void cmd_load( int argc , char **argv ) |
---|
[230] | 757 | { |
---|
[436] | 758 | int ret_fork; // return value from fork |
---|
| 759 | int ret_exec; // return value from exec |
---|
[676] | 760 | unsigned int cmd_ok; // command arguments acceptable |
---|
[436] | 761 | unsigned int background; // background execution if non zero |
---|
[676] | 762 | unsigned int place; // user placement if non zero |
---|
[682] | 763 | char * arg[5]; // array of pointers on process arguments |
---|
| 764 | unsigned int args_nr; // number of arguments in this array |
---|
[407] | 765 | |
---|
[682] | 766 | arg[4] = NULL; |
---|
[619] | 767 | |
---|
[676] | 768 | // arguments analysis of argv[] array that contains at most 8 strings: |
---|
[682] | 769 | // - the two first arguments ("cmd_load" & "elf_path") are mandatory |
---|
[676] | 770 | // - the six next ("-pcxy","arg0","arg1","arg2","arg3","&") are optional |
---|
| 771 | |
---|
| 772 | // analyse the optional arguments |
---|
| 773 | if( argc == 2 ) // no optional arguments |
---|
[407] | 774 | { |
---|
[676] | 775 | cmd_ok = 1; |
---|
| 776 | background = 0; |
---|
| 777 | place = 0; |
---|
[682] | 778 | arg[0] = NULL; |
---|
| 779 | arg[1] = NULL; |
---|
| 780 | arg[2] = NULL; |
---|
| 781 | arg[3] = NULL; |
---|
[676] | 782 | args_nr = 0; |
---|
| 783 | } |
---|
| 784 | else if( ((argc >= 4) && (argc <= 8)) && |
---|
| 785 | (argv[2][0] == '-') && (argv[2][1] == 'p') && |
---|
| 786 | (strcmp(argv[argc-1] , "&" ) == 0) ) // background, place, 0 to 4 args |
---|
[596] | 787 | { |
---|
[676] | 788 | cmd_ok = 1; |
---|
| 789 | background = 1; |
---|
| 790 | place = 0xFF000000 | atoi( argv[2] + 2 ); |
---|
[682] | 791 | arg[0] = (argc > 4) ? argv[3] : NULL; |
---|
| 792 | arg[1] = (argc > 5) ? argv[4] : NULL; |
---|
| 793 | arg[2] = (argc > 6) ? argv[5] : NULL; |
---|
| 794 | arg[3] = (argc > 7) ? argv[6] : NULL; |
---|
[676] | 795 | args_nr = argc - 4; |
---|
| 796 | } |
---|
| 797 | else if( ((argc >= 3) && (argc <= 7)) && |
---|
| 798 | (argv[2][0] == '-') && (argv[2][1] == 'p') && |
---|
| 799 | (strcmp(argv[argc-1] , "&" ) != 0) ) // place, no background, 0 to 4 args |
---|
| 800 | { |
---|
| 801 | cmd_ok = 1; |
---|
| 802 | background = 0; |
---|
| 803 | place = 0xFF000000 | atoi( argv[2] + 2 ); |
---|
[682] | 804 | arg[0] = (argc > 3) ? argv[3] : NULL; |
---|
| 805 | arg[1] = (argc > 4) ? argv[4] : NULL; |
---|
| 806 | arg[2] = (argc > 5) ? argv[5] : NULL; |
---|
| 807 | arg[3] = (argc > 6) ? argv[6] : NULL; |
---|
[676] | 808 | args_nr = argc - 3; |
---|
| 809 | } |
---|
| 810 | else if( ((argc >=3) && (argc <= 7)) && |
---|
| 811 | ((argv[2][0] != '-') || (argv[2][1] != 'p')) && |
---|
| 812 | (strcmp(argv[argc-1] , "&" ) == 0) ) // no place, background, 0 to 4 args |
---|
| 813 | { |
---|
| 814 | cmd_ok = 1; |
---|
| 815 | background = 1; |
---|
| 816 | place = 0; |
---|
[682] | 817 | arg[0] = (argc > 3) ? argv[2] : NULL; |
---|
| 818 | arg[1] = (argc > 4) ? argv[3] : NULL; |
---|
| 819 | arg[2] = (argc > 5) ? argv[4] : NULL; |
---|
| 820 | arg[3] = (argc > 6) ? argv[5] : NULL; |
---|
[676] | 821 | args_nr = argc - 3; |
---|
| 822 | } |
---|
| 823 | else if( (argc >= 3) && (argc <= 6 ) ) // no place, no background, 0 to 4 args |
---|
| 824 | { |
---|
| 825 | cmd_ok = 1; |
---|
| 826 | background = 0; |
---|
| 827 | place = 0; |
---|
[682] | 828 | arg[0] = (argc > 2) ? argv[2] : NULL; |
---|
| 829 | arg[1] = (argc > 3) ? argv[3] : NULL; |
---|
| 830 | arg[2] = (argc > 4) ? argv[4] : NULL; |
---|
| 831 | arg[3] = (argc > 5) ? argv[5] : NULL; |
---|
[676] | 832 | args_nr = argc - 2; |
---|
| 833 | } |
---|
| 834 | else // illegal optional arguments |
---|
| 835 | { |
---|
| 836 | cmd_ok = 0; |
---|
| 837 | background = 0; |
---|
| 838 | place = 0; |
---|
[682] | 839 | arg[0] = NULL; |
---|
| 840 | arg[1] = NULL; |
---|
| 841 | arg[2] = NULL; |
---|
| 842 | arg[3] = NULL; |
---|
[676] | 843 | args_nr = 0; |
---|
| 844 | } |
---|
[407] | 845 | |
---|
[676] | 846 | // check syntax errors |
---|
| 847 | if( cmd_ok == 0 ) |
---|
| 848 | { |
---|
| 849 | printf(" usage: load elf_path [-pcxy] [arg0] [arg1] [arg2] [arg3] [&]\n"); |
---|
[427] | 850 | |
---|
[676] | 851 | // release semaphore to get next command |
---|
| 852 | sem_post( &semaphore ); |
---|
[407] | 853 | |
---|
[676] | 854 | return; |
---|
| 855 | } |
---|
| 856 | |
---|
| 857 | // get elf_path |
---|
| 858 | strcpy( elf_path , argv[1] ); |
---|
| 859 | |
---|
[611] | 860 | #if DEBUG_CMD_LOAD |
---|
[682] | 861 | if( place ) |
---|
[676] | 862 | printf("\n[ksh] %s : path <%s> / place %x / args_nr %d / bg %d\n" |
---|
| 863 | " arg0 %s / arg1 %s / arg2 %s / arg3 %s\n", |
---|
[682] | 864 | __FUNCTION__, elf_path, place & 0xFFFF, args_nr, background, arg[0], arg[1], arg[2], arg[3] ); |
---|
| 865 | |
---|
| 866 | else |
---|
| 867 | printf("\n[ksh] %s : path <%s> / args_nr %d / bg %d\n" |
---|
| 868 | " arg0 %s / arg1 %s / arg2 %s / arg3 %s\n", |
---|
| 869 | __FUNCTION__, elf_path, args_nr, background, arg[0], arg[1], arg[2], arg[3] ); |
---|
[457] | 870 | #endif |
---|
| 871 | |
---|
[676] | 872 | // set target cluster if required |
---|
| 873 | if( place ) place_fork( place & 0xFFFF ); |
---|
[434] | 874 | |
---|
[676] | 875 | // KSH process fork CHILD process |
---|
| 876 | ret_fork = fork(); |
---|
[469] | 877 | |
---|
[676] | 878 | if ( ret_fork < 0 ) // it is a failure reported to KSH |
---|
| 879 | { |
---|
| 880 | printf(" error: ksh process unable to fork\n"); |
---|
| 881 | } |
---|
| 882 | else if (ret_fork == 0) // it is the CHILD process |
---|
| 883 | { |
---|
| 884 | |
---|
[611] | 885 | #if DEBUG_CMD_LOAD |
---|
[676] | 886 | printf("\n[ksh] %s : child (pid %x) after fork, before exec\n", |
---|
| 887 | __FUNCTION__ , getpid() ); |
---|
[469] | 888 | #endif |
---|
| 889 | |
---|
[676] | 890 | // CHILD process exec NEW process |
---|
| 891 | ret_exec = execve( elf_path , arg , NULL ); |
---|
[434] | 892 | |
---|
[611] | 893 | #if DEBUG_CMD_LOAD |
---|
[676] | 894 | printf("\n[ksh] %s : child (pid %x) after exec / ret_exec %x\n", |
---|
| 895 | __FUNCTION__, getpid(), ret_exec ); |
---|
[469] | 896 | #endif |
---|
| 897 | |
---|
[676] | 898 | // this is only executed in case of exec failure |
---|
| 899 | if( ret_exec ) |
---|
[409] | 900 | { |
---|
[682] | 901 | printf(" error: child process unable to exec <%s>\n", elf_path ); |
---|
[676] | 902 | exit( 0 ); |
---|
| 903 | } |
---|
| 904 | } |
---|
| 905 | else // it is the KSH process : ret_fork is the new process PID |
---|
| 906 | { |
---|
[436] | 907 | |
---|
[611] | 908 | #if DEBUG_CMD_LOAD |
---|
[676] | 909 | printf("\n[ksh] %s : ksh (pid %x) after fork / ret_fork %x\n", |
---|
| 910 | __FUNCTION__, getpid(), ret_fork ); |
---|
[457] | 911 | #endif |
---|
[676] | 912 | // when the new process is launched in background, the KSH process |
---|
| 913 | // takes the TXT ownership, and releases the semaphore to get the next command. |
---|
| 914 | // Otherwise, the child process keep the TXT ownership, and the semaphore will |
---|
| 915 | // be released by the KSH main thread when the child process exit |
---|
[457] | 916 | |
---|
[676] | 917 | if( background ) // KSH must keep TXT ownership |
---|
| 918 | { |
---|
| 919 | // KSH get back the TXT ownership |
---|
| 920 | fg( getpid() ); |
---|
[619] | 921 | |
---|
[676] | 922 | // release semaphore to get next command |
---|
| 923 | sem_post( &semaphore ); |
---|
[457] | 924 | } |
---|
[436] | 925 | } |
---|
[407] | 926 | } // end cmd_load |
---|
| 927 | |
---|
| 928 | //////////////////////////////////////////// |
---|
| 929 | static void cmd_ls( int argc , char **argv ) |
---|
[230] | 930 | { |
---|
[611] | 931 | struct dirent * entry; |
---|
| 932 | DIR * dir; |
---|
[230] | 933 | |
---|
[619] | 934 | #if DEBUG_CMD_LS |
---|
[676] | 935 | printf("\n[ksh] enter %s" , __FUNCTION__); |
---|
[619] | 936 | #endif |
---|
| 937 | |
---|
[612] | 938 | if (argc > 2 ) |
---|
[407] | 939 | { |
---|
[596] | 940 | printf(" usage: ls [path]\n"); |
---|
[407] | 941 | } |
---|
[596] | 942 | else |
---|
[407] | 943 | { |
---|
[612] | 944 | // handle case with no argument |
---|
[230] | 945 | |
---|
[611] | 946 | // get target directory path |
---|
[612] | 947 | if ( argc == 1 ) strcpy( pathname , "." ); |
---|
[625] | 948 | else strcpy( pathname , argv[1] ); |
---|
[611] | 949 | |
---|
| 950 | // open target directory |
---|
| 951 | dir = opendir( pathname ); |
---|
| 952 | |
---|
| 953 | #if DEBUG_CMD_LS |
---|
[682] | 954 | printf("\n[ksh] %s : directory <%s> open / DIR %x\n", __FUNCTION__, pathname , dir ); |
---|
[611] | 955 | #endif |
---|
| 956 | |
---|
| 957 | if( dir == NULL) |
---|
| 958 | { |
---|
| 959 | printf(" error : directory <%s> not found\n", pathname ); |
---|
[623] | 960 | |
---|
| 961 | sem_post( &semaphore ); |
---|
| 962 | return; |
---|
[611] | 963 | } |
---|
| 964 | |
---|
| 965 | // loop on directory entries |
---|
| 966 | while ( (entry = readdir(dir)) != NULL ) |
---|
| 967 | { |
---|
[612] | 968 | printf("%s\n", entry->d_name); |
---|
[611] | 969 | } |
---|
| 970 | |
---|
| 971 | // close target directory |
---|
| 972 | closedir( dir ); |
---|
| 973 | |
---|
| 974 | #if DEBUG_CMD_LS |
---|
[676] | 975 | printf("\n[ksh] %s : directory <%s> closed", __FUNCTION__, pathname ); |
---|
[611] | 976 | #endif |
---|
| 977 | |
---|
[596] | 978 | } |
---|
[230] | 979 | |
---|
[457] | 980 | // release semaphore to get next command |
---|
| 981 | sem_post( &semaphore ); |
---|
| 982 | |
---|
| 983 | } // end cmd_ls() |
---|
| 984 | |
---|
[407] | 985 | /////////////////////////////////////////////// |
---|
| 986 | static void cmd_mkdir( int argc , char **argv ) |
---|
[230] | 987 | { |
---|
[407] | 988 | if (argc != 2) |
---|
| 989 | { |
---|
[409] | 990 | printf(" usage: mkdir pathname\n"); |
---|
[230] | 991 | } |
---|
[596] | 992 | else |
---|
| 993 | { |
---|
[625] | 994 | strcpy( pathname , argv[1] ); |
---|
[230] | 995 | |
---|
[610] | 996 | mkdir( pathname , 0x777 ); |
---|
[596] | 997 | } |
---|
[230] | 998 | |
---|
[457] | 999 | // release semaphore to get next command |
---|
| 1000 | sem_post( &semaphore ); |
---|
| 1001 | |
---|
| 1002 | } // end cmd_mkdir() |
---|
| 1003 | |
---|
[407] | 1004 | //////////////////////////////////////////// |
---|
| 1005 | static void cmd_mv( int argc , char **argv ) |
---|
[230] | 1006 | { |
---|
[610] | 1007 | if (argc != 3) |
---|
| 1008 | { |
---|
| 1009 | printf(" usage: mv old_pathname new_pathname\n"); |
---|
[230] | 1010 | } |
---|
[596] | 1011 | else |
---|
| 1012 | { |
---|
[625] | 1013 | strcpy( pathname , argv[1] ); |
---|
| 1014 | strcpy( pathnew , argv[2] ); |
---|
[610] | 1015 | |
---|
| 1016 | // call the relevant syscall |
---|
[625] | 1017 | if( rename( pathname , pathnew ) ) |
---|
[610] | 1018 | { |
---|
[625] | 1019 | printf(" error: unable to rename <%s> to <%s>\n", pathname , pathnew ); |
---|
[610] | 1020 | } |
---|
[596] | 1021 | } |
---|
[610] | 1022 | |
---|
[457] | 1023 | // release semaphore to get next command |
---|
| 1024 | sem_post( &semaphore ); |
---|
[407] | 1025 | |
---|
[457] | 1026 | } // end cmd_mv |
---|
[230] | 1027 | |
---|
[588] | 1028 | |
---|
| 1029 | //////////////////////////////////////////// |
---|
| 1030 | static void cmd_ps( int argc , char **argv ) |
---|
| 1031 | { |
---|
| 1032 | unsigned int x_size; |
---|
| 1033 | unsigned int y_size; |
---|
| 1034 | unsigned int x; |
---|
| 1035 | unsigned int y; |
---|
[682] | 1036 | unsigned int error; |
---|
[588] | 1037 | |
---|
[682] | 1038 | char u_buf[BUF_MAX_SIZE]; |
---|
| 1039 | |
---|
[619] | 1040 | #if DEBUG_CMD_PS |
---|
[676] | 1041 | printf("\n[ksh] enter %s" , __FUNCTION__); |
---|
[619] | 1042 | #endif |
---|
| 1043 | |
---|
[676] | 1044 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
[588] | 1045 | { |
---|
[676] | 1046 | printf(" usage: ps\n"); |
---|
[588] | 1047 | } |
---|
[596] | 1048 | else |
---|
| 1049 | { |
---|
| 1050 | // get platform config |
---|
[659] | 1051 | hard_config_t config; |
---|
| 1052 | get_config( &config ); |
---|
| 1053 | x_size = config.x_size; |
---|
| 1054 | y_size = config.y_size; |
---|
[588] | 1055 | |
---|
[596] | 1056 | // scan all clusters |
---|
| 1057 | for( x = 0 ; x < x_size ; x++ ) |
---|
[588] | 1058 | { |
---|
[596] | 1059 | for( y = 0 ; y < y_size ; y++ ) |
---|
| 1060 | { |
---|
[682] | 1061 | int cxy = HAL_CXY_FROM_XY(x,y); |
---|
[619] | 1062 | |
---|
| 1063 | #if DEBUG_CMD_PS |
---|
[682] | 1064 | printf("\n[ksh] %s : call get_processes() in cluster %x", __FUNCTION__ , cxy ); |
---|
[619] | 1065 | #endif |
---|
[682] | 1066 | // write all owned processes in cxy to u_buf buffer |
---|
| 1067 | // one single NUL terminated string / one line per process) |
---|
| 1068 | error = get_processes( cxy, |
---|
| 1069 | 1, // owned only |
---|
| 1070 | u_buf, |
---|
| 1071 | BUF_MAX_SIZE ); |
---|
| 1072 | if( error ) |
---|
| 1073 | { |
---|
| 1074 | printf(" ... too much processes in cluster %x\n", cxy ); |
---|
| 1075 | } |
---|
[619] | 1076 | |
---|
[682] | 1077 | // display processes owned by cluster cxy |
---|
| 1078 | printf("%s" , u_buf ); |
---|
[596] | 1079 | } |
---|
[588] | 1080 | } |
---|
| 1081 | } |
---|
| 1082 | |
---|
| 1083 | // release semaphore to get next command |
---|
| 1084 | sem_post( &semaphore ); |
---|
| 1085 | |
---|
| 1086 | } // end cmd_ps() |
---|
| 1087 | |
---|
[407] | 1088 | ///////////////////////////////////////////// |
---|
| 1089 | static void cmd_pwd( int argc , char **argv ) |
---|
[230] | 1090 | { |
---|
[676] | 1091 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
[407] | 1092 | { |
---|
[676] | 1093 | printf(" usage: pwd\n"); |
---|
[407] | 1094 | } |
---|
| 1095 | else |
---|
| 1096 | { |
---|
[625] | 1097 | if ( getcwd( pathname , PATH_MAX_SIZE ) ) |
---|
[596] | 1098 | { |
---|
| 1099 | printf(" error: unable to get current directory\n"); |
---|
| 1100 | } |
---|
| 1101 | else |
---|
| 1102 | { |
---|
[625] | 1103 | printf("%s\n", pathname ); |
---|
[596] | 1104 | } |
---|
| 1105 | } |
---|
[407] | 1106 | |
---|
[457] | 1107 | // release semaphore to get next command |
---|
| 1108 | sem_post( &semaphore ); |
---|
| 1109 | |
---|
| 1110 | } // end cmd_pwd() |
---|
| 1111 | |
---|
[407] | 1112 | //////////////////////////////////////////// |
---|
| 1113 | static void cmd_rm( int argc , char **argv ) |
---|
| 1114 | { |
---|
| 1115 | if (argc != 2) |
---|
| 1116 | { |
---|
[676] | 1117 | printf(" usage: rm pathname\n"); |
---|
[230] | 1118 | } |
---|
[596] | 1119 | else |
---|
| 1120 | { |
---|
[625] | 1121 | strcpy( pathname , argv[1] ); |
---|
[230] | 1122 | |
---|
[608] | 1123 | if ( unlink( pathname ) ) |
---|
| 1124 | { |
---|
[611] | 1125 | printf(" error: unable to remove <%s>\n", pathname ); |
---|
[608] | 1126 | } |
---|
[596] | 1127 | } |
---|
[230] | 1128 | |
---|
[457] | 1129 | // release semaphore to get next command |
---|
| 1130 | sem_post( &semaphore ); |
---|
[230] | 1131 | |
---|
[641] | 1132 | } // end cmd_rm() |
---|
[457] | 1133 | |
---|
[407] | 1134 | /////////////////////////////////////////////// |
---|
[641] | 1135 | static void cmd_stat( int argc , char **argv ) |
---|
| 1136 | { |
---|
| 1137 | struct stat st; |
---|
| 1138 | unsigned int size; |
---|
| 1139 | |
---|
| 1140 | if (argc != 2) |
---|
| 1141 | { |
---|
[676] | 1142 | printf(" usage: stat pathname\n"); |
---|
[641] | 1143 | } |
---|
| 1144 | else |
---|
| 1145 | { |
---|
| 1146 | strcpy( pathname , argv[1] ); |
---|
| 1147 | |
---|
| 1148 | if ( stat( pathname , &st ) ) |
---|
| 1149 | { |
---|
| 1150 | printf(" error: cannot stat <%s>\n", argv[2] ); |
---|
| 1151 | } |
---|
| 1152 | else |
---|
| 1153 | { |
---|
| 1154 | // get file size |
---|
| 1155 | size = st.st_size; |
---|
| 1156 | |
---|
| 1157 | // print file stat info |
---|
| 1158 | printf(" <%s> : %d bytes\n", pathname, size ); |
---|
| 1159 | } |
---|
| 1160 | } |
---|
| 1161 | |
---|
| 1162 | // release semaphore to get next command |
---|
| 1163 | sem_post( &semaphore ); |
---|
| 1164 | |
---|
| 1165 | } // end cmd_stat() |
---|
| 1166 | |
---|
| 1167 | /////////////////////////////////////////////// |
---|
[407] | 1168 | static void cmd_rmdir( int argc , char **argv ) |
---|
[230] | 1169 | { |
---|
[676] | 1170 | if (argc != 2) |
---|
| 1171 | { |
---|
| 1172 | printf(" usage: rmdir pathname\n"); |
---|
| 1173 | } |
---|
| 1174 | else |
---|
| 1175 | { |
---|
| 1176 | strcpy( pathname , argv[1] ); |
---|
[230] | 1177 | |
---|
[676] | 1178 | if ( unlink( pathname ) ) |
---|
| 1179 | { |
---|
| 1180 | printf(" error: unable to remove <%s>\n", pathname ); |
---|
| 1181 | } |
---|
| 1182 | } |
---|
| 1183 | |
---|
| 1184 | // release semaphore to get next command |
---|
| 1185 | sem_post( &semaphore ); |
---|
| 1186 | |
---|
| 1187 | } // end cmd_rmdir() |
---|
| 1188 | |
---|
[442] | 1189 | /////////////////////////////////////////////// |
---|
| 1190 | static void cmd_trace( int argc , char **argv ) |
---|
| 1191 | { |
---|
| 1192 | unsigned int cxy; |
---|
| 1193 | unsigned int lid; |
---|
| 1194 | |
---|
| 1195 | if (argc != 3) |
---|
| 1196 | { |
---|
| 1197 | printf(" usage: trace cxy lid \n"); |
---|
| 1198 | } |
---|
[596] | 1199 | else |
---|
| 1200 | { |
---|
| 1201 | cxy = atoi(argv[1]); |
---|
| 1202 | lid = atoi(argv[2]); |
---|
[442] | 1203 | |
---|
[596] | 1204 | if( trace( 1 , cxy , lid ) ) |
---|
| 1205 | { |
---|
| 1206 | printf(" error: core[%x,%d] not found\n", cxy, lid ); |
---|
| 1207 | } |
---|
[442] | 1208 | } |
---|
| 1209 | |
---|
[457] | 1210 | // release semaphore to get next command |
---|
| 1211 | sem_post( &semaphore ); |
---|
| 1212 | |
---|
| 1213 | } // end cmd_trace |
---|
| 1214 | |
---|
[442] | 1215 | /////////////////////////////////////////////// |
---|
| 1216 | static void cmd_untrace( int argc , char **argv ) |
---|
| 1217 | { |
---|
| 1218 | unsigned int cxy; |
---|
| 1219 | unsigned int lid; |
---|
| 1220 | |
---|
| 1221 | if (argc != 3) |
---|
| 1222 | { |
---|
| 1223 | printf(" usage: untrace cxy lid \n"); |
---|
| 1224 | } |
---|
[596] | 1225 | else |
---|
| 1226 | { |
---|
| 1227 | cxy = atoi(argv[1]); |
---|
| 1228 | lid = atoi(argv[2]); |
---|
[442] | 1229 | |
---|
[596] | 1230 | if( trace( 0 , cxy , lid ) ) |
---|
| 1231 | { |
---|
| 1232 | printf(" error: core[%x,%d] not found\n", cxy, lid ); |
---|
| 1233 | } |
---|
[442] | 1234 | } |
---|
| 1235 | |
---|
[457] | 1236 | // release semaphore to get next command |
---|
| 1237 | sem_post( &semaphore ); |
---|
| 1238 | |
---|
| 1239 | } // end cmd_untrace() |
---|
| 1240 | |
---|
| 1241 | /////////////////////////////////////////////////////////////////////////////////// |
---|
[407] | 1242 | // Array of commands |
---|
[457] | 1243 | /////////////////////////////////////////////////////////////////////////////////// |
---|
[230] | 1244 | |
---|
[619] | 1245 | ksh_cmd_t command[] = |
---|
[230] | 1246 | { |
---|
[435] | 1247 | { "cat", "display file content", cmd_cat }, |
---|
| 1248 | { "cd", "change current directory", cmd_cd }, |
---|
| 1249 | { "cp", "replicate a file in file system", cmd_cp }, |
---|
| 1250 | { "fg", "put a process in foreground", cmd_fg }, |
---|
| 1251 | { "display", "display vmm/sched/process/vfs/chdev/txt", cmd_display }, |
---|
| 1252 | { "load", "load an user application", cmd_load }, |
---|
| 1253 | { "help", "list available commands", cmd_help }, |
---|
[676] | 1254 | { "history", "list registered commands", cmd_history }, |
---|
[457] | 1255 | { "kill", "kill a process (all threads)", cmd_kill }, |
---|
[435] | 1256 | { "ls", "list directory entries", cmd_ls }, |
---|
| 1257 | { "mkdir", "create a new directory", cmd_mkdir }, |
---|
| 1258 | { "mv", "move a file in file system", cmd_mv }, |
---|
| 1259 | { "pwd", "print current working directory", cmd_pwd }, |
---|
[588] | 1260 | { "ps", "display all processes", cmd_ps }, |
---|
[435] | 1261 | { "rm", "remove a file from file system", cmd_rm }, |
---|
| 1262 | { "rmdir", "remove a directory from file system", cmd_rmdir }, |
---|
[641] | 1263 | { "stat", "print infos on a given file", cmd_stat }, |
---|
[442] | 1264 | { "trace", "activate trace for a given core", cmd_trace }, |
---|
| 1265 | { "untrace", "desactivate trace for a given core", cmd_untrace }, |
---|
[435] | 1266 | { NULL, NULL, NULL } |
---|
[230] | 1267 | }; |
---|
| 1268 | |
---|
[407] | 1269 | //////////////////////////////////////////////////////////////////////////////////// |
---|
[457] | 1270 | // This function analyses one command (with arguments), executes it, and returns. |
---|
[407] | 1271 | //////////////////////////////////////////////////////////////////////////////////// |
---|
[625] | 1272 | static void __attribute__ ((noinline)) execute( char * buf ) |
---|
[230] | 1273 | { |
---|
[619] | 1274 | int argc = 0; |
---|
| 1275 | char * argv[MAX_ARGS]; |
---|
| 1276 | int i; |
---|
| 1277 | int len = strlen(buf); |
---|
[230] | 1278 | |
---|
[625] | 1279 | #if DEBUG_EXECUTE |
---|
[676] | 1280 | printf("\n[ksh] enter %s for command <%s>" , __FUNCTION__ , buf ); |
---|
[619] | 1281 | #endif |
---|
| 1282 | |
---|
[676] | 1283 | // build argc/argv : |
---|
| 1284 | // arg[0] is the command type |
---|
| 1285 | // - other arg[i] are the command arguments |
---|
| 1286 | |
---|
[407] | 1287 | for (i = 0; i < len; i++) |
---|
| 1288 | { |
---|
[619] | 1289 | // convert SPACE to NUL |
---|
[407] | 1290 | if (buf[i] == ' ') |
---|
| 1291 | { |
---|
[230] | 1292 | buf[i] = '\0'; |
---|
[407] | 1293 | } |
---|
| 1294 | else if (i == 0 || buf[i - 1] == '\0') |
---|
| 1295 | { |
---|
| 1296 | if (argc < MAX_ARGS) |
---|
| 1297 | { |
---|
[230] | 1298 | argv[argc] = &buf[i]; |
---|
| 1299 | argc++; |
---|
| 1300 | } |
---|
| 1301 | } |
---|
| 1302 | } |
---|
| 1303 | |
---|
[625] | 1304 | // check command |
---|
| 1305 | if (argc == 0) |
---|
| 1306 | { |
---|
| 1307 | // release semaphore to get next command |
---|
| 1308 | sem_post( &semaphore ); |
---|
| 1309 | } |
---|
| 1310 | |
---|
| 1311 | #if DEBUG_EXECUTE |
---|
[676] | 1312 | printf("\n[ksh] in %s : argc = %d / type = %s", __FUNCTION__ , argc , argv[0] ); |
---|
[619] | 1313 | #endif |
---|
| 1314 | |
---|
[682] | 1315 | // scan the list of commands to match cmd_type (contained in argv[0] |
---|
[625] | 1316 | int found = 0; |
---|
| 1317 | for ( i = 0 ; (command[i].name != NULL) && (found == 0) ; i++ ) |
---|
[407] | 1318 | { |
---|
[625] | 1319 | if (strcmp(argv[0], command[i].name) == 0) |
---|
[407] | 1320 | { |
---|
[625] | 1321 | command[i].fn(argc, argv); |
---|
| 1322 | found = 1; |
---|
[230] | 1323 | } |
---|
[625] | 1324 | } |
---|
[230] | 1325 | |
---|
[625] | 1326 | // check undefined command |
---|
| 1327 | if (!found) |
---|
| 1328 | { |
---|
[682] | 1329 | printf(" error : undefined command type <%s>\n", argv[0]); |
---|
[457] | 1330 | |
---|
[625] | 1331 | // release semaphore to get next command |
---|
| 1332 | sem_post( &semaphore ); |
---|
[230] | 1333 | } |
---|
[625] | 1334 | } // end execute() |
---|
[230] | 1335 | |
---|
[626] | 1336 | |
---|
| 1337 | |
---|
[574] | 1338 | /////////////////////////////// |
---|
[503] | 1339 | static void interactive( void ) |
---|
[230] | 1340 | { |
---|
[469] | 1341 | char c; // read character |
---|
| 1342 | unsigned int end_command; // last character found in a command |
---|
| 1343 | unsigned int count; // pointer in command buffer |
---|
| 1344 | unsigned int i; // index for loops |
---|
| 1345 | unsigned int state; // escape sequence state |
---|
[230] | 1346 | |
---|
[457] | 1347 | |
---|
[682] | 1348 | // direct command to help debug |
---|
[641] | 1349 | |
---|
[682] | 1350 | if( getpid() == 0x2) |
---|
[659] | 1351 | { |
---|
| 1352 | if( sem_wait( &semaphore ) ) |
---|
| 1353 | { |
---|
| 1354 | printf("\n[ksh %d] error : cannot found semafore\n" ); |
---|
| 1355 | exit( 1 ); |
---|
| 1356 | } |
---|
| 1357 | else |
---|
| 1358 | { |
---|
[682] | 1359 | strcpy( cmd , "load bin/user/tcp_chat.elf 1 0xbbbbbbbb 0xaaaaaaaa 0xcc" ); |
---|
[659] | 1360 | printf("[ksh] %s\n", cmd ); |
---|
| 1361 | execute( cmd ); |
---|
| 1362 | } |
---|
| 1363 | } |
---|
[676] | 1364 | |
---|
[682] | 1365 | if( getpid() == 0x3 ) |
---|
[659] | 1366 | { |
---|
| 1367 | if( sem_wait( &semaphore ) ) |
---|
| 1368 | { |
---|
| 1369 | printf("\n[ksh %d] error : cannot found semafore\n" ); |
---|
| 1370 | exit( 1 ); |
---|
| 1371 | } |
---|
| 1372 | else |
---|
| 1373 | { |
---|
[682] | 1374 | strcpy( cmd , "load bin/user/tcp_chat.elf 0 0xaaaaaaaa 0xbbbbbbbb 0xcc" ); |
---|
[659] | 1375 | printf("[ksh] %s\n", cmd ); |
---|
| 1376 | execute( cmd ); |
---|
| 1377 | } |
---|
| 1378 | } |
---|
[469] | 1379 | |
---|
[682] | 1380 | // |
---|
[625] | 1381 | |
---|
[407] | 1382 | enum fsm_states |
---|
| 1383 | { |
---|
[457] | 1384 | NORMAL = 0, |
---|
| 1385 | ESCAPE = 1, |
---|
| 1386 | BRAKET = 2, |
---|
[230] | 1387 | }; |
---|
| 1388 | |
---|
[457] | 1389 | // This lexical analyser writes one command line in the command buffer. |
---|
| 1390 | // It is implemented as a 3 states FSM to handle the following escape sequences: |
---|
[230] | 1391 | // - ESC [ A : up arrow |
---|
| 1392 | // - ESC [ B : down arrow |
---|
| 1393 | // - ESC [ C : right arrow |
---|
| 1394 | // - ESC [ D : left arrow |
---|
[407] | 1395 | // The three states have the following semantic: |
---|
[230] | 1396 | // - NORMAL : no (ESC) character has been found |
---|
| 1397 | // - ESCAPE : the character (ESC) has been found |
---|
| 1398 | // - BRAKET : the wo characters (ESC,[) have been found |
---|
[436] | 1399 | |
---|
[619] | 1400 | // take the semaphore for the first command |
---|
| 1401 | if ( sem_wait( &semaphore ) ) |
---|
| 1402 | { |
---|
| 1403 | printf("\n[ksh error] cannot found semafore\n" ); |
---|
| 1404 | exit( 1 ); |
---|
| 1405 | } |
---|
| 1406 | |
---|
| 1407 | // display prompt for the first command |
---|
| 1408 | printf("\n[ksh] "); |
---|
| 1409 | |
---|
| 1410 | // external loop on the commands / the interactive thread do not exit this loop |
---|
[230] | 1411 | while (1) |
---|
| 1412 | { |
---|
[457] | 1413 | // initialize command buffer |
---|
[619] | 1414 | count = 0; |
---|
| 1415 | state = NORMAL; |
---|
| 1416 | end_command = 0; |
---|
[230] | 1417 | |
---|
[457] | 1418 | // internal loop on characters in one command |
---|
| 1419 | while( end_command == 0 ) |
---|
| 1420 | { |
---|
| 1421 | // get one character from TXT_RX |
---|
| 1422 | c = (char)getchar(); |
---|
| 1423 | |
---|
| 1424 | if( c == 0 ) continue; |
---|
| 1425 | |
---|
| 1426 | if( state == NORMAL ) // we are not in an escape sequence |
---|
| 1427 | { |
---|
[230] | 1428 | if ((c == '\b') || (c == 0x7F)) // backspace => remove one character |
---|
| 1429 | { |
---|
[457] | 1430 | if (count > 0) |
---|
| 1431 | { |
---|
| 1432 | printf("\b \b"); |
---|
| 1433 | count--; |
---|
| 1434 | } |
---|
[230] | 1435 | } |
---|
[457] | 1436 | else if (c == '\n') // new line => end of command |
---|
[230] | 1437 | { |
---|
[457] | 1438 | if (count > 0) // analyse & execute command |
---|
| 1439 | { |
---|
| 1440 | // complete command with NUL character |
---|
[619] | 1441 | cmd[count] = 0; |
---|
[457] | 1442 | count++; |
---|
[676] | 1443 | |
---|
[625] | 1444 | // register command in log_entries[] array |
---|
[619] | 1445 | strncpy( log_entries[ptw].buf , cmd , count ); |
---|
[457] | 1446 | log_entries[ptw].count = count; |
---|
| 1447 | ptw = (ptw + 1) % LOG_DEPTH; |
---|
| 1448 | ptr = ptw; |
---|
[230] | 1449 | |
---|
[457] | 1450 | // echo character |
---|
| 1451 | putchar( c ); |
---|
[230] | 1452 | |
---|
[625] | 1453 | // execute command |
---|
| 1454 | execute( cmd ); |
---|
[457] | 1455 | } |
---|
| 1456 | else // no command registered |
---|
[441] | 1457 | { |
---|
[457] | 1458 | // release semaphore to get next command |
---|
| 1459 | sem_post( &semaphore ); |
---|
[441] | 1460 | } |
---|
[457] | 1461 | |
---|
| 1462 | // exit internal loop on characters |
---|
| 1463 | end_command = 1; |
---|
| 1464 | } |
---|
| 1465 | else if (c == '\t') // tabulation => do nothing |
---|
| 1466 | { |
---|
| 1467 | } |
---|
| 1468 | else if (c == (char)0x1B) // ESC => start an escape sequence |
---|
| 1469 | { |
---|
| 1470 | state = ESCAPE; |
---|
| 1471 | } |
---|
| 1472 | else // normal character |
---|
[230] | 1473 | { |
---|
[619] | 1474 | if (count < (sizeof(cmd) - 1) ) |
---|
[457] | 1475 | { |
---|
| 1476 | // register character in command buffer |
---|
[619] | 1477 | cmd[count] = c; |
---|
[457] | 1478 | count++; |
---|
| 1479 | |
---|
| 1480 | // echo character |
---|
| 1481 | putchar( c ); |
---|
[230] | 1482 | } |
---|
[619] | 1483 | else |
---|
| 1484 | { |
---|
| 1485 | printf("\none command cannot exceed %d characters\n", sizeof(cmd) ); |
---|
| 1486 | } |
---|
[230] | 1487 | } |
---|
| 1488 | } |
---|
[457] | 1489 | else if( state == ESCAPE ) |
---|
[230] | 1490 | { |
---|
| 1491 | if (c == '[') // valid sequence => continue |
---|
| 1492 | { |
---|
| 1493 | state = BRAKET; |
---|
| 1494 | } |
---|
| 1495 | else // invalid sequence => do nothing |
---|
| 1496 | { |
---|
| 1497 | state = NORMAL; |
---|
| 1498 | } |
---|
| 1499 | } |
---|
[457] | 1500 | else if( state == BRAKET ) |
---|
[230] | 1501 | { |
---|
[619] | 1502 | if (c == 'D') // valid LEFT sequence => move cmd pointer left |
---|
[230] | 1503 | { |
---|
| 1504 | if (count > 0) |
---|
| 1505 | { |
---|
| 1506 | printf("\b"); |
---|
| 1507 | count--; |
---|
| 1508 | } |
---|
| 1509 | |
---|
| 1510 | // get next user char |
---|
| 1511 | state = NORMAL; |
---|
| 1512 | } |
---|
[619] | 1513 | else if (c == 'C') // valid RIGHT sequence => move cmd pointer right |
---|
[230] | 1514 | { |
---|
[619] | 1515 | if (count < sizeof(cmd) - 1) |
---|
[230] | 1516 | { |
---|
[619] | 1517 | printf("%c", cmd[count]); |
---|
[230] | 1518 | count++; |
---|
| 1519 | } |
---|
| 1520 | |
---|
| 1521 | // get next user char |
---|
| 1522 | state = NORMAL; |
---|
| 1523 | } |
---|
| 1524 | else if (c == 'A') // valid UP sequence => move log pointer backward |
---|
| 1525 | { |
---|
| 1526 | // cancel current command |
---|
| 1527 | for (i = 0; i < count; i++) printf("\b \b"); |
---|
| 1528 | count = 0; |
---|
| 1529 | |
---|
[619] | 1530 | // copy log command into cmd |
---|
[230] | 1531 | ptr = (ptr - 1) % LOG_DEPTH; |
---|
[619] | 1532 | strcpy(cmd, log_entries[ptr].buf); |
---|
[458] | 1533 | count = log_entries[ptr].count - 1; |
---|
[230] | 1534 | |
---|
| 1535 | // display log command |
---|
[619] | 1536 | printf("%s", cmd); |
---|
[230] | 1537 | |
---|
| 1538 | // get next user char |
---|
| 1539 | state = NORMAL; |
---|
| 1540 | } |
---|
| 1541 | else if (c == 'B') // valid DOWN sequence => move log pointer forward |
---|
| 1542 | { |
---|
| 1543 | // cancel current command |
---|
| 1544 | for (i = 0 ; i < count; i++) printf("\b \b"); |
---|
| 1545 | count = 0; |
---|
| 1546 | |
---|
[619] | 1547 | // copy log command into cmd |
---|
[230] | 1548 | ptr = (ptr + 1) % LOG_DEPTH; |
---|
[619] | 1549 | strcpy(cmd, log_entries[ptr].buf); |
---|
[230] | 1550 | count = log_entries[ptr].count; |
---|
| 1551 | |
---|
| 1552 | // display log command |
---|
[619] | 1553 | printf("%s", cmd); |
---|
[230] | 1554 | |
---|
| 1555 | // get next user char |
---|
| 1556 | state = NORMAL; |
---|
| 1557 | } |
---|
| 1558 | else // other character => do nothing |
---|
| 1559 | { |
---|
| 1560 | // get next user char |
---|
| 1561 | state = NORMAL; |
---|
| 1562 | } |
---|
| 1563 | } |
---|
[457] | 1564 | } // end internal while loop on characters |
---|
[619] | 1565 | |
---|
| 1566 | // block interactive thread if KSH loose TXT ownership |
---|
| 1567 | if ( sem_wait( &semaphore ) ) |
---|
| 1568 | { |
---|
| 1569 | printf("\n[ksh error] cannot found semafore\n" ); |
---|
| 1570 | exit( 1 ); |
---|
| 1571 | } |
---|
| 1572 | |
---|
| 1573 | // display prompt for next command |
---|
| 1574 | printf("\n[ksh] "); |
---|
| 1575 | |
---|
[457] | 1576 | } // end external while loop on commands |
---|
[619] | 1577 | |
---|
[446] | 1578 | } // end interactive() |
---|
| 1579 | |
---|
[574] | 1580 | //////////////// |
---|
[503] | 1581 | int main( void ) |
---|
[446] | 1582 | { |
---|
| 1583 | unsigned int cxy; // owner cluster identifier for this KSH process |
---|
| 1584 | unsigned int lid; // core identifier for this KSH main thread |
---|
| 1585 | int status; // child process termination status |
---|
[633] | 1586 | int parent_pid; // parent process identifier (i.e. this process) |
---|
[457] | 1587 | int child_pid; // child process identifier |
---|
| 1588 | unsigned int is_owner; // non-zero if KSH process is TXT owner |
---|
[446] | 1589 | |
---|
| 1590 | // initialize log buffer |
---|
| 1591 | memset( &log_entries , 0, sizeof(log_entries)); |
---|
| 1592 | ptw = 0; |
---|
| 1593 | ptr = 0; |
---|
| 1594 | |
---|
[457] | 1595 | // get KSH process pid and core |
---|
| 1596 | parent_pid = getpid(); |
---|
[637] | 1597 | get_core_id( &cxy , &lid ); |
---|
[457] | 1598 | |
---|
[611] | 1599 | #if DEBUG_MAIN |
---|
[676] | 1600 | printf("\n[ksh] main started on core[%x,%d]", cxy , lid ); |
---|
[574] | 1601 | #endif |
---|
| 1602 | |
---|
| 1603 | // initializes the semaphore used to synchronize with interactive thread |
---|
[469] | 1604 | if ( sem_init( &semaphore , 0 , 1 ) ) |
---|
| 1605 | { |
---|
| 1606 | printf("\n[KSH ERROR] cannot initialize semaphore\n" ); |
---|
| 1607 | exit( 1 ); |
---|
| 1608 | } |
---|
[457] | 1609 | |
---|
[611] | 1610 | #if DEBUG_MAIN |
---|
[676] | 1611 | printf("\n[ksh] main initialized semaphore" ); |
---|
[574] | 1612 | #endif |
---|
| 1613 | |
---|
[446] | 1614 | // initialize interactive thread attributes |
---|
| 1615 | attr.attributes = PT_ATTR_DETACH | PT_ATTR_CLUSTER_DEFINED; |
---|
| 1616 | attr.cxy = cxy; |
---|
| 1617 | |
---|
| 1618 | // lauch the interactive thread |
---|
| 1619 | pthread_create( &trdid, |
---|
| 1620 | &attr, |
---|
| 1621 | &interactive, // entry function |
---|
| 1622 | NULL ); |
---|
[611] | 1623 | #if DEBUG_MAIN |
---|
[676] | 1624 | printf("\n[ksh] main thread launched interactive thread %x", trdid ); |
---|
[574] | 1625 | #endif |
---|
[588] | 1626 | |
---|
[682] | 1627 | // enter infinite loop monitoring children termination |
---|
[446] | 1628 | while( 1 ) |
---|
| 1629 | { |
---|
[457] | 1630 | // wait children termination |
---|
| 1631 | child_pid = wait( &status ); |
---|
[446] | 1632 | |
---|
[633] | 1633 | if( DEBUG_MAIN ) |
---|
| 1634 | { |
---|
| 1635 | if(WIFEXITED (status)) printf("\n[ksh] child process %x exit\n" ,child_pid); |
---|
| 1636 | if(WIFSIGNALED(status)) printf("\n[ksh] child process %x killed\n" ,child_pid); |
---|
| 1637 | if(WIFSTOPPED (status)) printf("\n[ksh] child process %x stopped\n",child_pid); |
---|
| 1638 | } |
---|
[446] | 1639 | |
---|
[457] | 1640 | // release semaphore if KSH process is TXT owner, to unblock interactive thread |
---|
| 1641 | is_fg( parent_pid , &is_owner ); |
---|
| 1642 | if( is_owner ) sem_post( &semaphore ); |
---|
[446] | 1643 | } |
---|
[436] | 1644 | } // end main() |
---|
[230] | 1645 | |
---|
[446] | 1646 | |
---|