[388] | 1 | /*
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| 2 | * TOPPERS ECHONET Lite Communication Middleware
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| 3 | *
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| 4 | * Copyright (C) 2017 Cores Co., Ltd. Japan
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| 5 | *
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| 6 | * ä¸è¨èä½æ¨©è
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| 7 | ã¯ï¼ä»¥ä¸ã®(1)ï½(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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| 8 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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| 9 | * å¤ã»åé
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| 10 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 11 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 12 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 13 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 14 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 15 | * ç¨ã§ããå½¢ã§åé
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| 16 | å¸ããå ´åã«ã¯ï¼åé
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| 17 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 18 | * è
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| 19 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 20 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 21 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 22 | * ç¨ã§ããªãå½¢ã§åé
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| 23 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 24 | * ã¨ï¼
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| 25 | * (a) åé
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| 26 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 27 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 28 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 29 | * (b) åé
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| 30 | å¸ã®å½¢æ
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| 31 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 32 | * å ±åãããã¨ï¼
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| 33 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 34 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 35 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 36 | 責ãããã¨ï¼
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| 37 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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| 38 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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| 39 | ããã³TOPPERSããã¸ã§ã¯ãã
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| 40 | * å
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| 41 | 責ãããã¨ï¼
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| 42 | *
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| 43 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 44 | ã
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| 45 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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| 46 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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| 47 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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| 48 | * ã®è²¬ä»»ãè² ããªãï¼
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| 49 | *
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| 50 | * @(#) $Id: fdtable.c 388 2019-05-22 11:25:18Z coas-nagasima $
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| 51 | */
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| 52 | #include "shellif.h"
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| 53 | #include <stdint.h>
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| 54 | #include <kernel.h>
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| 55 | #include <t_syslog.h>
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| 56 | #include <t_stdlib.h>
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| 57 | #include <sil.h>
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| 58 | #include "syssvc/serial.h"
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| 59 | #include "syssvc/syslog.h"
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| 60 | #include "target_syssvc.h"
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| 61 | #include "fdtable.h"
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| 62 | #include "kernel_cfg.h"
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| 63 | #include <string.h>
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| 64 | #include "util/ntstdio.h"
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| 65 | #include "hal/serial_api.h"
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| 66 |
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| 67 | #ifdef _DEBUG
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| 68 | static const char THIS_FILE[] = __FILE__;
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| 69 | #endif
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| 70 |
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| 71 | extern IO_TYPE IO_TYPE_STDIN;
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| 72 | extern IO_TYPE IO_TYPE_STDOUT;
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| 73 | extern IO_TYPE IO_TYPE_STDERR;
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| 74 |
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| 75 | static struct SHELL_FILE fd_table[8 * sizeof(FLGPTN)] = {
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| 76 | { STDIN_FILENO, &IO_TYPE_STDIN, 0 },
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| 77 | { STDOUT_FILENO, &IO_TYPE_STDOUT, 0 },
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| 78 | { STDERR_FILENO, &IO_TYPE_STDERR, 0 },
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| 79 | };
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| 80 | #define fd_table_count (sizeof(fd_table) / sizeof(fd_table[0]))
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| 81 |
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| 82 | struct SHELL_FILE *new_fp(IO_TYPE *type, int id, int writable)
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| 83 | {
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| 84 | struct SHELL_FILE *fp = NULL;
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| 85 | ER ret;
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| 86 |
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| 87 | ret = wai_sem(SEM_FILEDESC);
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| 88 | if (ret < 0) {
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| 89 | syslog(LOG_ERROR, "wai_sem => %d", ret);
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| 90 | }
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| 91 |
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| 92 | for (int fd = 3; fd < fd_table_count; fd++) {
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| 93 | fp = &fd_table[fd];
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| 94 | if (fp->type != NULL)
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| 95 | continue;
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| 96 |
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| 97 | memset(fp, 0, sizeof(struct SHELL_FILE));
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| 98 | fp->fd = fd;
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| 99 | fp->type = type;
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| 100 | fp->handle = id;
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| 101 | fp->writable = writable;
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| 102 | break;
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| 103 | }
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| 104 |
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| 105 | ret = sig_sem(SEM_FILEDESC);
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| 106 | if (ret < 0) {
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| 107 | syslog(LOG_ERROR, "sig_sem => %d", ret);
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| 108 | }
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| 109 |
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| 110 | if (fp != NULL) {
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| 111 | FLGPTN flgptn = 0;
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| 112 |
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| 113 | FD_SET(fp->fd, (fd_set *)&flgptn);
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| 114 |
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| 115 | ret = clr_flg(FLG_SELECT_WAIT, ~flgptn);
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| 116 | if (ret != E_OK) {
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| 117 | syslog(LOG_ERROR, "clr_flg => %d", ret);
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| 118 | }
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| 119 | }
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| 120 |
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| 121 | return fp;
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| 122 | }
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| 123 |
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| 124 | struct SHELL_FILE *id_to_fd(IO_TYPE *type, int id)
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| 125 | {
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| 126 | struct SHELL_FILE *fp = NULL;
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| 127 | ER ret;
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| 128 |
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| 129 | ret = wai_sem(SEM_FILEDESC);
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| 130 | if (ret < 0) {
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| 131 | syslog(LOG_ERROR, "wai_sem => %d", ret);
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| 132 | }
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| 133 |
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| 134 | for (int fd = 3; fd < fd_table_count; fd++) {
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| 135 | fp = &fd_table[fd];
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| 136 | if ((fp->type == type) && (fp->handle == id))
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| 137 | break;
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| 138 | }
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| 139 |
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| 140 | ret = sig_sem(SEM_FILEDESC);
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| 141 | if (ret < 0) {
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| 142 | syslog(LOG_ERROR, "sig_sem => %d", ret);
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| 143 | }
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| 144 |
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| 145 | return fp;
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| 146 | }
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| 147 |
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| 148 | int delete_fd_by_id(IO_TYPE *type, int id)
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| 149 | {
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| 150 | struct SHELL_FILE *fp = id_to_fd(type, id);
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| 151 | if (fp == NULL)
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| 152 | return -EBADF;
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| 153 |
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| 154 | return delete_fp(fp);
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| 155 | }
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| 156 |
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| 157 | int delete_fp(struct SHELL_FILE *fp)
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| 158 | {
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| 159 | ER ret;
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| 160 |
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| 161 | fp->type->delete(fp);
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| 162 |
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| 163 | ret = wai_sem(SEM_FILEDESC);
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| 164 | if (ret < 0) {
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| 165 | syslog(LOG_ERROR, "wai_sem => %d", ret);
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| 166 | }
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| 167 |
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| 168 | memset(fp, 0, sizeof(struct SHELL_FILE));
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| 169 |
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| 170 | ret = sig_sem(SEM_FILEDESC);
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| 171 | if (ret < 0) {
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| 172 | syslog(LOG_ERROR, "sig_sem => %d", ret);
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| 173 | }
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| 174 |
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| 175 | return 0;
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| 176 | }
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| 177 |
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| 178 | struct SHELL_FILE *fd_to_fp(int fd)
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| 179 | {
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| 180 | if ((fd < 0) || (fd >= fd_table_count))
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| 181 | return NULL;
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| 182 | return &fd_table[fd];
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| 183 | }
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| 184 |
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| 185 | void memand(void *dst, void *src, size_t len)
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| 186 | {
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| 187 | uint8_t *d = (uint8_t *)dst;
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| 188 | uint8_t *s = (uint8_t *)src;
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| 189 | uint8_t *e = &s[len];
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| 190 |
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| 191 | while (s < e) {
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| 192 | *d++ &= *s++;
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| 193 | }
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| 194 | }
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| 195 |
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| 196 | struct fd_events {
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| 197 | int count;
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| 198 | fd_set readfds;
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| 199 | fd_set writefds;
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| 200 | fd_set errorfds;
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| 201 | };
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| 202 |
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| 203 | ER shell_get_evts(struct fd_events *evts, TMO tmout);
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| 204 |
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| 205 | #define TMO_MAX INT_MAX
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| 206 |
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| 207 | int shell_select(int n, fd_set *__restrict rfds, fd_set *__restrict wfds, fd_set *__restrict efds, struct timeval *__restrict tv)
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| 208 | {
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| 209 | ER ret;
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| 210 | TMO tmout = TMO_FEVR;
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| 211 | struct fd_events evts;
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| 212 |
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| 213 | if (tv != NULL) {
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| 214 | if (tv->tv_sec < (TMO_MAX / 1000000))
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| 215 | tmout = tv->tv_sec * 1000000 + tv->tv_usec;
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| 216 | else
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| 217 | tmout = TMO_MAX;
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| 218 | }
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| 219 |
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| 220 | if (rfds != NULL)
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| 221 | memcpy(&evts.readfds, rfds, sizeof(fd_set));
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| 222 | else
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| 223 | memset(&evts.readfds, 0, sizeof(fd_set));
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| 224 | if (wfds != NULL)
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| 225 | memcpy(&evts.writefds, wfds, sizeof(fd_set));
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| 226 | else
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| 227 | memset(&evts.writefds, 0, sizeof(fd_set));
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| 228 | if (efds != NULL)
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| 229 | memcpy(&evts.errorfds, efds, sizeof(fd_set));
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| 230 | else
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| 231 | memset(&evts.errorfds, 0, sizeof(fd_set));
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| 232 | evts.count = 0;
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| 233 |
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| 234 | ret = shell_get_evts(&evts, tmout);
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| 235 | if (ret == E_OK) {
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| 236 | if (rfds != NULL)
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| 237 | memand(rfds, &evts.readfds, sizeof(fd_set));
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| 238 | if (wfds != NULL)
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| 239 | memand(wfds, &evts.writefds, sizeof(fd_set));
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| 240 | if (efds != NULL)
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| 241 | memand(efds, &evts.errorfds, sizeof(fd_set));
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| 242 | return evts.count;
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| 243 | }
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| 244 | if (ret == E_TMOUT) {
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| 245 | if (rfds != NULL)
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| 246 | memset(rfds, 0, sizeof(fd_set));
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| 247 | if (wfds != NULL)
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| 248 | memset(wfds, 0, sizeof(fd_set));
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| 249 | if (efds != NULL)
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| 250 | memset(efds, 0, sizeof(fd_set));
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| 251 | return 0;
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| 252 | }
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| 253 |
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| 254 | return -EBADF;
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| 255 | }
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| 256 |
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| 257 | int shell_poll(struct pollfd *fds, nfds_t nfds, int timeout)
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| 258 | {
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| 259 | ER ret;
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| 260 | TMO tmout;
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| 261 | struct fd_events evts;
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| 262 |
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| 263 | if(timeout < 0)
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| 264 | tmout = TMO_FEVR;
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| 265 | else if (timeout < (TMO_MAX / 1000))
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| 266 | tmout = timeout * 1000;
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| 267 | else
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| 268 | tmout = TMO_MAX;
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| 269 |
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| 270 | memset(&evts, 0, sizeof(evts));
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| 271 |
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| 272 | for (int i = 0; i < nfds; i++) {
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| 273 | struct pollfd *pfd = &fds[i];
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| 274 | int fd = pfd->fd;
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| 275 | if ((fd < 0) || (fd >= fd_table_count))
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| 276 | continue;
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| 277 |
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| 278 | if (pfd->events & POLLIN)
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| 279 | FD_SET(fd, &evts.readfds);
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| 280 | if (pfd->events & POLLOUT)
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| 281 | FD_SET(fd, &evts.writefds);
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| 282 | if (pfd->events & POLLERR)
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| 283 | FD_SET(fd, &evts.errorfds);
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| 284 | pfd->revents = 0;
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| 285 | }
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| 286 |
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| 287 | ret = shell_get_evts(&evts, tmout);
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| 288 | if (ret == E_OK) {
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| 289 | int result = 0;
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| 290 | for (int i = 0; i < nfds; i++) {
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| 291 | struct pollfd *pfd = &fds[i];
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| 292 | int fd = pfd->fd;
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| 293 | if ((fd < 0) || (fd >= fd_table_count))
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| 294 | continue;
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| 295 |
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| 296 | if (FD_ISSET(fd, &evts.readfds))
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| 297 | pfd->revents |= POLLIN;
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| 298 | if (FD_ISSET(fd, &evts.writefds))
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| 299 | pfd->revents |= POLLOUT;
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| 300 | if (FD_ISSET(fd, &evts.errorfds))
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| 301 | pfd->revents |= POLLERR;
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| 302 | if (pfd->revents != 0)
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| 303 | result++;
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| 304 | }
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| 305 | return result;
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| 306 | }
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| 307 | if (ret == E_TMOUT) {
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| 308 | return 0;
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| 309 | }
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| 310 |
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| 311 | return -EBADF;
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| 312 | }
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| 313 |
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| 314 | ER shell_get_evts(struct fd_events *evts, TMO tmout)
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| 315 | {
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| 316 | int count = 0;
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| 317 | SYSTIM prev, now;
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| 318 | FLGPTN flgptn;
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| 319 |
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| 320 | get_tim(&prev);
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| 321 |
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| 322 | for (;;) {
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| 323 | ER ret;
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| 324 | FLGPTN waitptn, readfds = 0, writefds = 0;
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| 325 | struct SHELL_FILE *fp = NULL;
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| 326 |
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| 327 | #ifndef NTSHELL_NO_SOCKET
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| 328 | waitptn = *((FLGPTN *)&evts->errorfds);
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| 329 | #else
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| 330 | waitptn = *((FLGPTN *)&evts->readfds) | *((FLGPTN *)&evts->errorfds);
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| 331 | #endif
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| 332 | for (int fd = 0; fd < fd_table_count; fd++) {
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| 333 | fp = &fd_table[fd];
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| 334 |
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| 335 | if (FD_ISSET(fd, &evts->readfds)) {
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| 336 | if (fp->type->readable(fp)) {
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| 337 | FD_SET(fd, (fd_set *)&readfds);
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| 338 | count++;
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| 339 | if (fp->readevt_w == fp->readevt_r) fp->readevt_r--;
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| 340 | }
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| 341 | else {
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| 342 | FD_SET(fd, (fd_set *)&waitptn);
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| 343 | }
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| 344 | }
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| 345 |
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| 346 | if (FD_ISSET(fd, &evts->writefds)) {
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| 347 | if (fp->type->writable(fp)) {
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| 348 | FD_SET(fd, (fd_set *)&writefds);
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| 349 | count++;
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| 350 | if (fp->writeevt_w == fp->writeevt_r) fp->writeevt_r--;
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| 351 | }
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| 352 | else {
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| 353 | FD_SET(fd, (fd_set *)&waitptn);
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| 354 | }
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| 355 | }
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| 356 | }
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| 357 | memset(evts, 0, sizeof(*evts));
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| 358 |
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| 359 | if (waitptn == 0) {
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| 360 | memcpy(&evts->readfds, &readfds, sizeof(evts->readfds));
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| 361 | memcpy(&evts->writefds, &writefds, sizeof(evts->writefds));
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| 362 | evts->count = count;
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| 363 | return E_OK;
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| 364 | }
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| 365 | else if ((readfds | writefds) != 0) {
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| 366 | set_flg(FLG_SELECT_WAIT, (readfds | writefds));
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| 367 | }
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| 368 |
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| 369 | /* ã¤ãã³ãå¾
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| 370 | ã¡ */
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| 371 | flgptn = 0;
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| 372 | ret = twai_flg(FLG_SELECT_WAIT, waitptn, TWF_ORW, &flgptn, tmout);
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| 373 | if (ret != E_OK) {
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| 374 | if (ret != E_TMOUT) {
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| 375 | syslog(LOG_ERROR, "twai_flg => %d", ret);
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| 376 | return ret;
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| 377 | }
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| 378 | }
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| 379 |
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| 380 | if (flgptn != 0) {
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| 381 | flgptn &= waitptn;
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| 382 |
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| 383 | /* åãåã£ããã©ã°ã®ã¿ã¯ãªã¢ */
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| 384 | ret = clr_flg(FLG_SELECT_WAIT, ~flgptn);
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| 385 | if (ret != E_OK) {
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| 386 | syslog(LOG_ERROR, "clr_flg => %d", ret);
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| 387 | }
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| 388 | }
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| 389 |
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| 390 | count = 0;
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| 391 | for (int fd = 0; fd < fd_table_count; fd++) {
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| 392 | fp = &fd_table[fd];
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| 393 |
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| 394 | if (fp->readevt_w != fp->readevt_r) {
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| 395 | fp->readevt_r++;
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| 396 | if (FD_ISSET(fd, (fd_set *)&waitptn))
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| 397 | FD_SET(fd, &evts->readfds);
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| 398 | count++;
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| 399 | }
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| 400 | if (fp->writeevt_w != fp->writeevt_r) {
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| 401 | fp->writeevt_r++;
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| 402 | if (FD_ISSET(fd, (fd_set *)&waitptn))
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| 403 | FD_SET(fd, &evts->writefds);
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| 404 | count++;
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| 405 | }
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| 406 | if (fp->errorevt_w != fp->errorevt_r) {
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| 407 | fp->errorevt_r++;
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| 408 | if (FD_ISSET(fd, (fd_set *)&waitptn))
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| 409 | FD_SET(fd, &evts->errorfds);
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| 410 | count++;
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| 411 | }
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| 412 | }
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| 413 |
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| 414 | if ((flgptn == 0) || (count > 0))
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| 415 | break;
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| 416 |
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| 417 | get_tim(&now);
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| 418 |
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| 419 | SYSTIM elapse = now - prev;
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| 420 | if (elapse > tmout) {
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| 421 | flgptn = 0;
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| 422 | break;
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| 423 | }
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| 424 |
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| 425 | prev = now;
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| 426 | tmout -= elapse;
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| 427 | }
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| 428 |
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| 429 | evts->count = count;
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| 430 |
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| 431 | return (flgptn == 0) ? E_TMOUT : E_OK;
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| 432 | }
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| 433 |
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| 434 | void clean_fd()
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| 435 | {
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| 436 | struct SHELL_FILE *fp = NULL;
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| 437 | for (int fd = 3; fd < fd_table_count; fd++) {
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| 438 | fp = &fd_table[fd];
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| 439 | if ((fp->type == 0) || (fp->fd == 0))
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| 440 | continue;
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| 441 |
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| 442 | fp->type->close(fp);
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| 443 |
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| 444 | delete_fp(fp);
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| 445 | }
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| 446 | }
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| 447 |
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| 448 | int shell_ioctl(int fd, int request, void *arg)
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| 449 | {
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| 450 | struct SHELL_FILE *fp = fd_to_fp(fd);
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| 451 | if (fp == NULL)
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| 452 | return -EBADF;
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| 453 |
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| 454 | return fp->type->ioctl(fp, request, arg);
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| 455 | }
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| 456 |
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| 457 | #ifdef NTSHELL_NO_SOCKET
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| 458 |
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| 459 | int shell_socket(int family, int type, int protocol)
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| 460 | {
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| 461 | return -ENOMEM;
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| 462 | }
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| 463 |
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| 464 | int shell_bind(int fd, const struct sockaddr *addr, socklen_t len)
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| 465 | {
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| 466 | return -ENOMEM;
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| 467 | }
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| 468 |
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| 469 | int shell_listen(int fd, int backlog)
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| 470 | {
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| 471 | return -ENOMEM;
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| 472 | }
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| 473 |
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| 474 | int shell_connect(int fd, const struct sockaddr *addr, socklen_t len)
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| 475 | {
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| 476 | return -ENOMEM;
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| 477 | }
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| 478 |
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| 479 | int shell_accept(int fd, struct sockaddr *__restrict addr, socklen_t *__restrict len)
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| 480 | {
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| 481 | return -ENOMEM;
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| 482 | }
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| 483 |
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| 484 | ssize_t shell_sendto(int fd, const void *buf, size_t len, int flags, const struct sockaddr *addr, socklen_t alen)
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| 485 | {
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| 486 | return -ENOMEM;
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| 487 | }
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| 488 |
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| 489 | ssize_t shell_sendmsg(int fd, const struct msghdr *msg, int flags)
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| 490 | {
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| 491 | return -ENOMEM;
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| 492 | }
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| 493 |
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| 494 | ssize_t shell_recvfrom(int fd, void *__restrict buf, size_t len, int flags, struct sockaddr *__restrict addr, socklen_t *__restrict alen)
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| 495 | {
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| 496 | return -ENOMEM;
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| 497 | }
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| 498 |
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| 499 | ssize_t shell_recvmsg(int fd, struct msghdr *msg, int flags)
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| 500 | {
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| 501 | return -ENOMEM;
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| 502 | }
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| 503 |
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| 504 | int shell_shutdown(int fd, int how)
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| 505 | {
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| 506 | return -ENOMEM;
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| 507 | }
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| 508 |
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| 509 | int shell_getsockopt(int fd, int level, int optname, void *optval, socklen_t *__restrict optlen)
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| 510 | {
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| 511 | return -ENOMEM;
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| 512 | }
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| 513 |
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| 514 | int shell_setsockopt(int fd, int level, int optname, const void *optval, socklen_t optlen)
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| 515 | {
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| 516 | return -ENOMEM;
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| 517 | }
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| 518 |
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| 519 | int shell_getpeername(int fd, struct sockaddr *restrict addr, socklen_t *restrict len)
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| 520 | {
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| 521 | return -ENOMEM;
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| 522 | }
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| 523 |
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| 524 | int shell_getsockname(int fd, struct sockaddr *restrict addr, socklen_t *restrict len)
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| 525 | {
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| 526 | return -ENOMEM;
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| 527 | }
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| 528 | #endif
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