1 | #include <machine/rtems-bsd-kernel-space.h> |
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2 | |
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3 | /*- |
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4 | * Copyright (c) 1986, 1988, 1991, 1993 |
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5 | * The Regents of the University of California. All rights reserved. |
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6 | * (c) UNIX System Laboratories, Inc. |
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7 | * All or some portions of this file are derived from material licensed |
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8 | * to the University of California by American Telephone and Telegraph |
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9 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
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10 | * the permission of UNIX System Laboratories, Inc. |
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11 | * |
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12 | * Redistribution and use in source and binary forms, with or without |
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13 | * modification, are permitted provided that the following conditions |
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14 | * are met: |
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15 | * 1. Redistributions of source code must retain the above copyright |
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16 | * notice, this list of conditions and the following disclaimer. |
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17 | * 2. Redistributions in binary form must reproduce the above copyright |
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18 | * notice, this list of conditions and the following disclaimer in the |
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19 | * documentation and/or other materials provided with the distribution. |
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20 | * 3. Neither the name of the University nor the names of its contributors |
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21 | * may be used to endorse or promote products derived from this software |
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22 | * without specific prior written permission. |
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23 | * |
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24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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34 | * SUCH DAMAGE. |
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35 | * |
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36 | * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94 |
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37 | */ |
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38 | |
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39 | #include <sys/cdefs.h> |
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40 | __FBSDID("$FreeBSD$"); |
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41 | |
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42 | #ifdef _KERNEL |
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43 | #include <rtems/bsd/local/opt_ddb.h> |
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44 | #include <rtems/bsd/local/opt_printf.h> |
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45 | #endif /* _KERNEL */ |
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46 | |
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47 | #include <rtems/bsd/sys/param.h> |
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48 | #ifdef _KERNEL |
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49 | #include <sys/systm.h> |
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50 | #include <rtems/bsd/sys/lock.h> |
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51 | #include <sys/kdb.h> |
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52 | #include <sys/mutex.h> |
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53 | #include <sys/sx.h> |
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54 | #include <sys/kernel.h> |
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55 | #ifndef __rtems__ |
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56 | #include <sys/msgbuf.h> |
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57 | #endif /* __rtems__ */ |
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58 | #include <sys/malloc.h> |
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59 | #include <sys/priv.h> |
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60 | #include <sys/proc.h> |
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61 | #include <sys/stddef.h> |
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62 | #include <sys/sysctl.h> |
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63 | #ifndef __rtems__ |
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64 | #include <sys/tty.h> |
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65 | #endif /* __rtems__ */ |
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66 | #include <sys/syslog.h> |
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67 | #ifndef __rtems__ |
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68 | #include <sys/cons.h> |
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69 | #endif /* __rtems__ */ |
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70 | #include <sys/uio.h> |
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71 | #endif |
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72 | #include <sys/ctype.h> |
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73 | #include <sys/sbuf.h> |
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74 | |
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75 | #ifdef DDB |
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76 | #include <ddb/ddb.h> |
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77 | #endif |
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78 | |
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79 | /* |
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80 | * Note that stdarg.h and the ANSI style va_start macro is used for both |
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81 | * ANSI and traditional C compilers. |
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82 | */ |
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83 | #ifdef _KERNEL |
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84 | #include <machine/stdarg.h> |
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85 | #else |
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86 | #include <stdarg.h> |
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87 | #endif |
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88 | |
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89 | #ifdef _KERNEL |
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90 | |
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91 | #ifndef __rtems__ |
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92 | #define TOCONS 0x01 |
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93 | #define TOTTY 0x02 |
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94 | #define TOLOG 0x04 |
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95 | #endif /* __rtems__ */ |
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96 | |
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97 | /* Max number conversion buffer length: a u_quad_t in base 2, plus NUL byte. */ |
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98 | #define MAXNBUF (sizeof(intmax_t) * NBBY + 1) |
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99 | |
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100 | #ifndef __rtems__ |
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101 | struct putchar_arg { |
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102 | int flags; |
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103 | int pri; |
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104 | struct tty *tty; |
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105 | char *p_bufr; |
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106 | size_t n_bufr; |
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107 | char *p_next; |
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108 | size_t remain; |
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109 | }; |
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110 | #endif /* __rtems__ */ |
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111 | |
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112 | struct snprintf_arg { |
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113 | char *str; |
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114 | size_t remain; |
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115 | }; |
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116 | |
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117 | #ifndef __rtems__ |
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118 | extern int log_open; |
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119 | |
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120 | static void msglogchar(int c, int pri); |
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121 | static void msglogstr(char *str, int pri, int filter_cr); |
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122 | static void putchar(int ch, void *arg); |
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123 | #endif /* __rtems__ */ |
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124 | static char *ksprintn(char *nbuf, uintmax_t num, int base, int *len, int upper); |
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125 | static void snprintf_func(int ch, void *arg); |
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126 | |
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127 | #ifndef __rtems__ |
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128 | static int msgbufmapped; /* Set when safe to use msgbuf */ |
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129 | int msgbuftrigger; |
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130 | |
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131 | static int log_console_output = 1; |
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132 | SYSCTL_INT(_kern, OID_AUTO, log_console_output, CTLFLAG_RWTUN, |
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133 | &log_console_output, 0, "Duplicate console output to the syslog"); |
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134 | |
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135 | /* |
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136 | * See the comment in log_console() below for more explanation of this. |
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137 | */ |
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138 | static int log_console_add_linefeed; |
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139 | SYSCTL_INT(_kern, OID_AUTO, log_console_add_linefeed, CTLFLAG_RWTUN, |
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140 | &log_console_add_linefeed, 0, "log_console() adds extra newlines"); |
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141 | |
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142 | static int always_console_output; |
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143 | SYSCTL_INT(_kern, OID_AUTO, always_console_output, CTLFLAG_RWTUN, |
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144 | &always_console_output, 0, "Always output to console despite TIOCCONS"); |
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145 | |
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146 | /* |
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147 | * Warn that a system table is full. |
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148 | */ |
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149 | void |
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150 | tablefull(const char *tab) |
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151 | { |
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152 | |
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153 | log(LOG_ERR, "%s: table is full\n", tab); |
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154 | } |
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155 | |
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156 | /* |
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157 | * Uprintf prints to the controlling terminal for the current process. |
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158 | */ |
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159 | int |
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160 | uprintf(const char *fmt, ...) |
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161 | { |
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162 | va_list ap; |
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163 | struct putchar_arg pca; |
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164 | struct proc *p; |
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165 | struct thread *td; |
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166 | int retval; |
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167 | |
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168 | td = curthread; |
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169 | if (TD_IS_IDLETHREAD(td)) |
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170 | return (0); |
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171 | |
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172 | sx_slock(&proctree_lock); |
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173 | p = td->td_proc; |
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174 | PROC_LOCK(p); |
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175 | if ((p->p_flag & P_CONTROLT) == 0) { |
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176 | PROC_UNLOCK(p); |
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177 | sx_sunlock(&proctree_lock); |
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178 | return (0); |
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179 | } |
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180 | SESS_LOCK(p->p_session); |
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181 | pca.tty = p->p_session->s_ttyp; |
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182 | SESS_UNLOCK(p->p_session); |
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183 | PROC_UNLOCK(p); |
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184 | if (pca.tty == NULL) { |
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185 | sx_sunlock(&proctree_lock); |
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186 | return (0); |
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187 | } |
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188 | pca.flags = TOTTY; |
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189 | pca.p_bufr = NULL; |
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190 | va_start(ap, fmt); |
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191 | tty_lock(pca.tty); |
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192 | sx_sunlock(&proctree_lock); |
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193 | retval = kvprintf(fmt, putchar, &pca, 10, ap); |
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194 | tty_unlock(pca.tty); |
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195 | va_end(ap); |
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196 | return (retval); |
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197 | } |
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198 | |
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199 | /* |
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200 | * tprintf and vtprintf print on the controlling terminal associated with the |
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201 | * given session, possibly to the log as well. |
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202 | */ |
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203 | void |
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204 | tprintf(struct proc *p, int pri, const char *fmt, ...) |
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205 | { |
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206 | va_list ap; |
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207 | |
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208 | va_start(ap, fmt); |
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209 | vtprintf(p, pri, fmt, ap); |
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210 | va_end(ap); |
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211 | } |
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212 | |
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213 | void |
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214 | vtprintf(struct proc *p, int pri, const char *fmt, va_list ap) |
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215 | { |
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216 | struct tty *tp = NULL; |
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217 | int flags = 0; |
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218 | struct putchar_arg pca; |
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219 | struct session *sess = NULL; |
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220 | |
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221 | sx_slock(&proctree_lock); |
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222 | if (pri != -1) |
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223 | flags |= TOLOG; |
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224 | if (p != NULL) { |
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225 | PROC_LOCK(p); |
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226 | if (p->p_flag & P_CONTROLT && p->p_session->s_ttyvp) { |
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227 | sess = p->p_session; |
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228 | sess_hold(sess); |
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229 | PROC_UNLOCK(p); |
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230 | tp = sess->s_ttyp; |
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231 | if (tp != NULL && tty_checkoutq(tp)) |
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232 | flags |= TOTTY; |
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233 | else |
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234 | tp = NULL; |
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235 | } else |
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236 | PROC_UNLOCK(p); |
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237 | } |
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238 | pca.pri = pri; |
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239 | pca.tty = tp; |
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240 | pca.flags = flags; |
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241 | pca.p_bufr = NULL; |
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242 | if (pca.tty != NULL) |
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243 | tty_lock(pca.tty); |
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244 | sx_sunlock(&proctree_lock); |
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245 | kvprintf(fmt, putchar, &pca, 10, ap); |
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246 | if (pca.tty != NULL) |
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247 | tty_unlock(pca.tty); |
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248 | if (sess != NULL) |
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249 | sess_release(sess); |
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250 | msgbuftrigger = 1; |
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251 | } |
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252 | |
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253 | /* |
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254 | * Ttyprintf displays a message on a tty; it should be used only by |
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255 | * the tty driver, or anything that knows the underlying tty will not |
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256 | * be revoke(2)'d away. Other callers should use tprintf. |
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257 | */ |
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258 | int |
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259 | ttyprintf(struct tty *tp, const char *fmt, ...) |
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260 | { |
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261 | va_list ap; |
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262 | struct putchar_arg pca; |
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263 | int retval; |
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264 | |
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265 | va_start(ap, fmt); |
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266 | pca.tty = tp; |
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267 | pca.flags = TOTTY; |
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268 | pca.p_bufr = NULL; |
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269 | retval = kvprintf(fmt, putchar, &pca, 10, ap); |
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270 | va_end(ap); |
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271 | return (retval); |
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272 | } |
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273 | |
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274 | static int |
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275 | _vprintf(int level, int flags, const char *fmt, va_list ap) |
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276 | { |
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277 | struct putchar_arg pca; |
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278 | int retval; |
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279 | #ifdef PRINTF_BUFR_SIZE |
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280 | char bufr[PRINTF_BUFR_SIZE]; |
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281 | #endif |
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282 | |
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283 | pca.tty = NULL; |
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284 | pca.pri = level; |
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285 | pca.flags = flags; |
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286 | #ifdef PRINTF_BUFR_SIZE |
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287 | pca.p_bufr = bufr; |
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288 | pca.p_next = pca.p_bufr; |
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289 | pca.n_bufr = sizeof(bufr); |
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290 | pca.remain = sizeof(bufr); |
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291 | *pca.p_next = '\0'; |
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292 | #else |
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293 | /* Don't buffer console output. */ |
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294 | pca.p_bufr = NULL; |
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295 | #endif |
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296 | |
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297 | retval = kvprintf(fmt, putchar, &pca, 10, ap); |
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298 | |
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299 | #ifdef PRINTF_BUFR_SIZE |
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300 | /* Write any buffered console/log output: */ |
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301 | if (*pca.p_bufr != '\0') { |
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302 | if (pca.flags & TOLOG) |
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303 | msglogstr(pca.p_bufr, level, /*filter_cr*/1); |
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304 | |
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305 | if (pca.flags & TOCONS) |
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306 | cnputs(pca.p_bufr); |
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307 | } |
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308 | #endif |
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309 | |
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310 | return (retval); |
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311 | } |
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312 | #else /* __rtems__ */ |
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313 | #include <rtems/bsd/bsd.h> |
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314 | #define _vprintf(level, flags, fmt, ap) rtems_bsd_vprintf(level, fmt, ap) |
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315 | #endif /* __rtems__ */ |
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316 | |
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317 | /* |
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318 | * Log writes to the log buffer, and guarantees not to sleep (so can be |
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319 | * called by interrupt routines). If there is no process reading the |
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320 | * log yet, it writes to the console also. |
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321 | */ |
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322 | void |
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323 | log(int level, const char *fmt, ...) |
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324 | { |
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325 | va_list ap; |
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326 | |
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327 | va_start(ap, fmt); |
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328 | vlog(level, fmt, ap); |
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329 | va_end(ap); |
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330 | } |
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331 | |
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332 | void |
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333 | vlog(int level, const char *fmt, va_list ap) |
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334 | { |
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335 | |
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336 | (void)_vprintf(level, log_open ? TOLOG : TOCONS | TOLOG, fmt, ap); |
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337 | #ifndef __rtems__ |
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338 | msgbuftrigger = 1; |
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339 | #endif /* __rtems__ */ |
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340 | } |
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341 | |
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342 | #ifndef __rtems__ |
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343 | #define CONSCHUNK 128 |
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344 | |
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345 | void |
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346 | log_console(struct uio *uio) |
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347 | { |
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348 | int c, error, nl; |
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349 | char *consbuffer; |
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350 | int pri; |
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351 | |
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352 | if (!log_console_output) |
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353 | return; |
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354 | |
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355 | pri = LOG_INFO | LOG_CONSOLE; |
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356 | uio = cloneuio(uio); |
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357 | consbuffer = malloc(CONSCHUNK, M_TEMP, M_WAITOK); |
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358 | |
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359 | nl = 0; |
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360 | while (uio->uio_resid > 0) { |
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361 | c = imin(uio->uio_resid, CONSCHUNK - 1); |
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362 | error = uiomove(consbuffer, c, uio); |
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363 | if (error != 0) |
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364 | break; |
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365 | /* Make sure we're NUL-terminated */ |
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366 | consbuffer[c] = '\0'; |
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367 | if (consbuffer[c - 1] == '\n') |
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368 | nl = 1; |
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369 | else |
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370 | nl = 0; |
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371 | msglogstr(consbuffer, pri, /*filter_cr*/ 1); |
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372 | } |
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373 | /* |
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374 | * The previous behavior in log_console() is preserved when |
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375 | * log_console_add_linefeed is non-zero. For that behavior, if an |
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376 | * individual console write came in that was not terminated with a |
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377 | * line feed, it would add a line feed. |
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378 | * |
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379 | * This results in different data in the message buffer than |
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380 | * appears on the system console (which doesn't add extra line feed |
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381 | * characters). |
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382 | * |
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383 | * A number of programs and rc scripts write a line feed, or a period |
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384 | * and a line feed when they have completed their operation. On |
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385 | * the console, this looks seamless, but when displayed with |
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386 | * 'dmesg -a', you wind up with output that looks like this: |
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387 | * |
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388 | * Updating motd: |
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389 | * . |
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390 | * |
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391 | * On the console, it looks like this: |
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392 | * Updating motd:. |
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393 | * |
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394 | * We could add logic to detect that situation, or just not insert |
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395 | * the extra newlines. Set the kern.log_console_add_linefeed |
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396 | * sysctl/tunable variable to get the old behavior. |
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397 | */ |
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398 | if (!nl && log_console_add_linefeed) { |
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399 | consbuffer[0] = '\n'; |
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400 | consbuffer[1] = '\0'; |
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401 | msglogstr(consbuffer, pri, /*filter_cr*/ 1); |
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402 | } |
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403 | msgbuftrigger = 1; |
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404 | free(uio, M_IOV); |
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405 | free(consbuffer, M_TEMP); |
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406 | return; |
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407 | } |
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408 | #endif /* __rtems__ */ |
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409 | |
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410 | int |
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411 | printf(const char *fmt, ...) |
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412 | { |
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413 | va_list ap; |
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414 | int retval; |
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415 | |
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416 | va_start(ap, fmt); |
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417 | retval = vprintf(fmt, ap); |
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418 | va_end(ap); |
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419 | |
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420 | return (retval); |
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421 | } |
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422 | |
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423 | int |
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424 | vprintf(const char *fmt, va_list ap) |
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425 | { |
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426 | int retval; |
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427 | |
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428 | retval = _vprintf(-1, TOCONS | TOLOG, fmt, ap); |
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429 | |
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430 | #ifndef __rtems__ |
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431 | if (!panicstr) |
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432 | msgbuftrigger = 1; |
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433 | #endif /* __rtems__ */ |
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434 | |
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435 | return (retval); |
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436 | } |
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437 | |
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438 | #ifndef __rtems__ |
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439 | static void |
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440 | putbuf(int c, struct putchar_arg *ap) |
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441 | { |
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442 | /* Check if no console output buffer was provided. */ |
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443 | if (ap->p_bufr == NULL) { |
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444 | /* Output direct to the console. */ |
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445 | if (ap->flags & TOCONS) |
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446 | cnputc(c); |
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447 | |
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448 | if (ap->flags & TOLOG) |
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449 | msglogchar(c, ap->pri); |
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450 | } else { |
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451 | /* Buffer the character: */ |
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452 | *ap->p_next++ = c; |
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453 | ap->remain--; |
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454 | |
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455 | /* Always leave the buffer zero terminated. */ |
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456 | *ap->p_next = '\0'; |
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457 | |
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458 | /* Check if the buffer needs to be flushed. */ |
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459 | if (ap->remain == 2 || c == '\n') { |
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460 | |
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461 | if (ap->flags & TOLOG) |
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462 | msglogstr(ap->p_bufr, ap->pri, /*filter_cr*/1); |
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463 | |
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464 | if (ap->flags & TOCONS) { |
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465 | if ((panicstr == NULL) && (constty != NULL)) |
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466 | msgbuf_addstr(&consmsgbuf, -1, |
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467 | ap->p_bufr, /*filter_cr*/ 0); |
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468 | |
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469 | if ((constty == NULL) ||(always_console_output)) |
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470 | cnputs(ap->p_bufr); |
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471 | } |
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472 | |
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473 | ap->p_next = ap->p_bufr; |
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474 | ap->remain = ap->n_bufr; |
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475 | *ap->p_next = '\0'; |
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476 | } |
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477 | |
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478 | /* |
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479 | * Since we fill the buffer up one character at a time, |
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480 | * this should not happen. We should always catch it when |
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481 | * ap->remain == 2 (if not sooner due to a newline), flush |
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482 | * the buffer and move on. One way this could happen is |
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483 | * if someone sets PRINTF_BUFR_SIZE to 1 or something |
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484 | * similarly silly. |
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485 | */ |
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486 | KASSERT(ap->remain > 2, ("Bad buffer logic, remain = %zd", |
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487 | ap->remain)); |
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488 | } |
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489 | } |
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490 | |
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491 | /* |
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492 | * Print a character on console or users terminal. If destination is |
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493 | * the console then the last bunch of characters are saved in msgbuf for |
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494 | * inspection later. |
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495 | */ |
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496 | static void |
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497 | putchar(int c, void *arg) |
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498 | { |
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499 | struct putchar_arg *ap = (struct putchar_arg*) arg; |
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500 | struct tty *tp = ap->tty; |
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501 | int flags = ap->flags; |
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502 | |
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503 | /* Don't use the tty code after a panic or while in ddb. */ |
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504 | if (kdb_active) { |
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505 | if (c != '\0') |
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506 | cnputc(c); |
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507 | return; |
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508 | } |
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509 | |
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510 | if ((flags & TOTTY) && tp != NULL && panicstr == NULL) |
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511 | tty_putchar(tp, c); |
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512 | |
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513 | if ((flags & (TOCONS | TOLOG)) && c != '\0') |
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514 | putbuf(c, ap); |
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515 | } |
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516 | #endif /* __rtems__ */ |
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517 | |
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518 | /* |
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519 | * Scaled down version of sprintf(3). |
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520 | */ |
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521 | int |
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522 | sprintf(char *buf, const char *cfmt, ...) |
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523 | { |
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524 | int retval; |
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525 | va_list ap; |
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526 | |
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527 | va_start(ap, cfmt); |
---|
528 | retval = kvprintf(cfmt, NULL, (void *)buf, 10, ap); |
---|
529 | buf[retval] = '\0'; |
---|
530 | va_end(ap); |
---|
531 | return (retval); |
---|
532 | } |
---|
533 | |
---|
534 | /* |
---|
535 | * Scaled down version of vsprintf(3). |
---|
536 | */ |
---|
537 | int |
---|
538 | vsprintf(char *buf, const char *cfmt, va_list ap) |
---|
539 | { |
---|
540 | int retval; |
---|
541 | |
---|
542 | retval = kvprintf(cfmt, NULL, (void *)buf, 10, ap); |
---|
543 | buf[retval] = '\0'; |
---|
544 | return (retval); |
---|
545 | } |
---|
546 | |
---|
547 | /* |
---|
548 | * Scaled down version of snprintf(3). |
---|
549 | */ |
---|
550 | int |
---|
551 | snprintf(char *str, size_t size, const char *format, ...) |
---|
552 | { |
---|
553 | int retval; |
---|
554 | va_list ap; |
---|
555 | |
---|
556 | va_start(ap, format); |
---|
557 | retval = vsnprintf(str, size, format, ap); |
---|
558 | va_end(ap); |
---|
559 | return(retval); |
---|
560 | } |
---|
561 | |
---|
562 | /* |
---|
563 | * Scaled down version of vsnprintf(3). |
---|
564 | */ |
---|
565 | int |
---|
566 | vsnprintf(char *str, size_t size, const char *format, va_list ap) |
---|
567 | { |
---|
568 | struct snprintf_arg info; |
---|
569 | int retval; |
---|
570 | |
---|
571 | info.str = str; |
---|
572 | info.remain = size; |
---|
573 | retval = kvprintf(format, snprintf_func, &info, 10, ap); |
---|
574 | if (info.remain >= 1) |
---|
575 | *info.str++ = '\0'; |
---|
576 | return (retval); |
---|
577 | } |
---|
578 | |
---|
579 | /* |
---|
580 | * Kernel version which takes radix argument vsnprintf(3). |
---|
581 | */ |
---|
582 | int |
---|
583 | vsnrprintf(char *str, size_t size, int radix, const char *format, va_list ap) |
---|
584 | { |
---|
585 | struct snprintf_arg info; |
---|
586 | int retval; |
---|
587 | |
---|
588 | info.str = str; |
---|
589 | info.remain = size; |
---|
590 | retval = kvprintf(format, snprintf_func, &info, radix, ap); |
---|
591 | if (info.remain >= 1) |
---|
592 | *info.str++ = '\0'; |
---|
593 | return (retval); |
---|
594 | } |
---|
595 | |
---|
596 | static void |
---|
597 | snprintf_func(int ch, void *arg) |
---|
598 | { |
---|
599 | struct snprintf_arg *const info = arg; |
---|
600 | |
---|
601 | if (info->remain >= 2) { |
---|
602 | *info->str++ = ch; |
---|
603 | info->remain--; |
---|
604 | } |
---|
605 | } |
---|
606 | |
---|
607 | /* |
---|
608 | * Put a NUL-terminated ASCII number (base <= 36) in a buffer in reverse |
---|
609 | * order; return an optional length and a pointer to the last character |
---|
610 | * written in the buffer (i.e., the first character of the string). |
---|
611 | * The buffer pointed to by `nbuf' must have length >= MAXNBUF. |
---|
612 | */ |
---|
613 | static char * |
---|
614 | ksprintn(char *nbuf, uintmax_t num, int base, int *lenp, int upper) |
---|
615 | { |
---|
616 | char *p, c; |
---|
617 | |
---|
618 | p = nbuf; |
---|
619 | *p = '\0'; |
---|
620 | do { |
---|
621 | c = hex2ascii(num % base); |
---|
622 | *++p = upper ? toupper(c) : c; |
---|
623 | } while (num /= base); |
---|
624 | if (lenp) |
---|
625 | *lenp = p - nbuf; |
---|
626 | return (p); |
---|
627 | } |
---|
628 | |
---|
629 | /* |
---|
630 | * Scaled down version of printf(3). |
---|
631 | * |
---|
632 | * Two additional formats: |
---|
633 | * |
---|
634 | * The format %b is supported to decode error registers. |
---|
635 | * Its usage is: |
---|
636 | * |
---|
637 | * printf("reg=%b\n", regval, "<base><arg>*"); |
---|
638 | * |
---|
639 | * where <base> is the output base expressed as a control character, e.g. |
---|
640 | * \10 gives octal; \20 gives hex. Each arg is a sequence of characters, |
---|
641 | * the first of which gives the bit number to be inspected (origin 1), and |
---|
642 | * the next characters (up to a control character, i.e. a character <= 32), |
---|
643 | * give the name of the register. Thus: |
---|
644 | * |
---|
645 | * kvprintf("reg=%b\n", 3, "\10\2BITTWO\1BITONE"); |
---|
646 | * |
---|
647 | * would produce output: |
---|
648 | * |
---|
649 | * reg=3<BITTWO,BITONE> |
---|
650 | * |
---|
651 | * XXX: %D -- Hexdump, takes pointer and separator string: |
---|
652 | * ("%6D", ptr, ":") -> XX:XX:XX:XX:XX:XX |
---|
653 | * ("%*D", len, ptr, " " -> XX XX XX XX ... |
---|
654 | */ |
---|
655 | int |
---|
656 | kvprintf(char const *fmt, void (*func)(int, void*), void *arg, int radix, va_list ap) |
---|
657 | { |
---|
658 | #define PCHAR(c) {int cc=(c); if (func) (*func)(cc,arg); else *d++ = cc; retval++; } |
---|
659 | char nbuf[MAXNBUF]; |
---|
660 | char *d; |
---|
661 | const char *p, *percent, *q; |
---|
662 | u_char *up; |
---|
663 | int ch, n; |
---|
664 | uintmax_t num; |
---|
665 | int base, lflag, qflag, tmp, width, ladjust, sharpflag, neg, sign, dot; |
---|
666 | int cflag, hflag, jflag, tflag, zflag; |
---|
667 | int dwidth, upper; |
---|
668 | char padc; |
---|
669 | int stop = 0, retval = 0; |
---|
670 | |
---|
671 | num = 0; |
---|
672 | if (!func) |
---|
673 | d = (char *) arg; |
---|
674 | else |
---|
675 | d = NULL; |
---|
676 | |
---|
677 | if (fmt == NULL) |
---|
678 | fmt = "(fmt null)\n"; |
---|
679 | |
---|
680 | if (radix < 2 || radix > 36) |
---|
681 | radix = 10; |
---|
682 | |
---|
683 | for (;;) { |
---|
684 | padc = ' '; |
---|
685 | width = 0; |
---|
686 | while ((ch = (u_char)*fmt++) != '%' || stop) { |
---|
687 | if (ch == '\0') |
---|
688 | return (retval); |
---|
689 | PCHAR(ch); |
---|
690 | } |
---|
691 | percent = fmt - 1; |
---|
692 | qflag = 0; lflag = 0; ladjust = 0; sharpflag = 0; neg = 0; |
---|
693 | sign = 0; dot = 0; dwidth = 0; upper = 0; |
---|
694 | cflag = 0; hflag = 0; jflag = 0; tflag = 0; zflag = 0; |
---|
695 | reswitch: switch (ch = (u_char)*fmt++) { |
---|
696 | case '.': |
---|
697 | dot = 1; |
---|
698 | goto reswitch; |
---|
699 | case '#': |
---|
700 | sharpflag = 1; |
---|
701 | goto reswitch; |
---|
702 | case '+': |
---|
703 | sign = 1; |
---|
704 | goto reswitch; |
---|
705 | case '-': |
---|
706 | ladjust = 1; |
---|
707 | goto reswitch; |
---|
708 | case '%': |
---|
709 | PCHAR(ch); |
---|
710 | break; |
---|
711 | case '*': |
---|
712 | if (!dot) { |
---|
713 | width = va_arg(ap, int); |
---|
714 | if (width < 0) { |
---|
715 | ladjust = !ladjust; |
---|
716 | width = -width; |
---|
717 | } |
---|
718 | } else { |
---|
719 | dwidth = va_arg(ap, int); |
---|
720 | } |
---|
721 | goto reswitch; |
---|
722 | case '0': |
---|
723 | if (!dot) { |
---|
724 | padc = '0'; |
---|
725 | goto reswitch; |
---|
726 | } |
---|
727 | case '1': case '2': case '3': case '4': |
---|
728 | case '5': case '6': case '7': case '8': case '9': |
---|
729 | for (n = 0;; ++fmt) { |
---|
730 | n = n * 10 + ch - '0'; |
---|
731 | ch = *fmt; |
---|
732 | if (ch < '0' || ch > '9') |
---|
733 | break; |
---|
734 | } |
---|
735 | if (dot) |
---|
736 | dwidth = n; |
---|
737 | else |
---|
738 | width = n; |
---|
739 | goto reswitch; |
---|
740 | case 'b': |
---|
741 | num = (u_int)va_arg(ap, int); |
---|
742 | p = va_arg(ap, char *); |
---|
743 | for (q = ksprintn(nbuf, num, *p++, NULL, 0); *q;) |
---|
744 | PCHAR(*q--); |
---|
745 | |
---|
746 | if (num == 0) |
---|
747 | break; |
---|
748 | |
---|
749 | for (tmp = 0; *p;) { |
---|
750 | n = *p++; |
---|
751 | if (num & (1 << (n - 1))) { |
---|
752 | PCHAR(tmp ? ',' : '<'); |
---|
753 | for (; (n = *p) > ' '; ++p) |
---|
754 | PCHAR(n); |
---|
755 | tmp = 1; |
---|
756 | } else |
---|
757 | for (; *p > ' '; ++p) |
---|
758 | continue; |
---|
759 | } |
---|
760 | if (tmp) |
---|
761 | PCHAR('>'); |
---|
762 | break; |
---|
763 | case 'c': |
---|
764 | width -= 1; |
---|
765 | |
---|
766 | if (!ladjust && width > 0) |
---|
767 | while (width--) |
---|
768 | PCHAR(padc); |
---|
769 | PCHAR(va_arg(ap, int)); |
---|
770 | if (ladjust && width > 0) |
---|
771 | while (width--) |
---|
772 | PCHAR(padc); |
---|
773 | break; |
---|
774 | case 'D': |
---|
775 | up = va_arg(ap, u_char *); |
---|
776 | p = va_arg(ap, char *); |
---|
777 | if (!width) |
---|
778 | width = 16; |
---|
779 | while(width--) { |
---|
780 | PCHAR(hex2ascii(*up >> 4)); |
---|
781 | PCHAR(hex2ascii(*up & 0x0f)); |
---|
782 | up++; |
---|
783 | if (width) |
---|
784 | for (q=p;*q;q++) |
---|
785 | PCHAR(*q); |
---|
786 | } |
---|
787 | break; |
---|
788 | case 'd': |
---|
789 | case 'i': |
---|
790 | base = 10; |
---|
791 | sign = 1; |
---|
792 | goto handle_sign; |
---|
793 | case 'h': |
---|
794 | if (hflag) { |
---|
795 | hflag = 0; |
---|
796 | cflag = 1; |
---|
797 | } else |
---|
798 | hflag = 1; |
---|
799 | goto reswitch; |
---|
800 | case 'j': |
---|
801 | jflag = 1; |
---|
802 | goto reswitch; |
---|
803 | case 'l': |
---|
804 | if (lflag) { |
---|
805 | lflag = 0; |
---|
806 | qflag = 1; |
---|
807 | } else |
---|
808 | lflag = 1; |
---|
809 | goto reswitch; |
---|
810 | case 'n': |
---|
811 | if (jflag) |
---|
812 | *(va_arg(ap, intmax_t *)) = retval; |
---|
813 | else if (qflag) |
---|
814 | *(va_arg(ap, quad_t *)) = retval; |
---|
815 | else if (lflag) |
---|
816 | *(va_arg(ap, long *)) = retval; |
---|
817 | else if (zflag) |
---|
818 | *(va_arg(ap, size_t *)) = retval; |
---|
819 | else if (hflag) |
---|
820 | *(va_arg(ap, short *)) = retval; |
---|
821 | else if (cflag) |
---|
822 | *(va_arg(ap, char *)) = retval; |
---|
823 | else |
---|
824 | *(va_arg(ap, int *)) = retval; |
---|
825 | break; |
---|
826 | #ifdef __rtems__ |
---|
827 | case 'm': |
---|
828 | p = strerror(errno); |
---|
829 | goto handle_string; |
---|
830 | #endif /* __rtems__ */ |
---|
831 | case 'o': |
---|
832 | base = 8; |
---|
833 | goto handle_nosign; |
---|
834 | case 'p': |
---|
835 | base = 16; |
---|
836 | sharpflag = (width == 0); |
---|
837 | sign = 0; |
---|
838 | num = (uintptr_t)va_arg(ap, void *); |
---|
839 | goto number; |
---|
840 | case 'q': |
---|
841 | qflag = 1; |
---|
842 | goto reswitch; |
---|
843 | case 'r': |
---|
844 | base = radix; |
---|
845 | if (sign) |
---|
846 | goto handle_sign; |
---|
847 | goto handle_nosign; |
---|
848 | case 's': |
---|
849 | p = va_arg(ap, char *); |
---|
850 | #ifdef __rtems__ |
---|
851 | handle_string: |
---|
852 | #endif /* __rtems__ */ |
---|
853 | if (p == NULL) |
---|
854 | p = "(null)"; |
---|
855 | if (!dot) |
---|
856 | n = strlen (p); |
---|
857 | else |
---|
858 | for (n = 0; n < dwidth && p[n]; n++) |
---|
859 | continue; |
---|
860 | |
---|
861 | width -= n; |
---|
862 | |
---|
863 | if (!ladjust && width > 0) |
---|
864 | while (width--) |
---|
865 | PCHAR(padc); |
---|
866 | while (n--) |
---|
867 | PCHAR(*p++); |
---|
868 | if (ladjust && width > 0) |
---|
869 | while (width--) |
---|
870 | PCHAR(padc); |
---|
871 | break; |
---|
872 | case 't': |
---|
873 | tflag = 1; |
---|
874 | goto reswitch; |
---|
875 | case 'u': |
---|
876 | base = 10; |
---|
877 | goto handle_nosign; |
---|
878 | case 'X': |
---|
879 | upper = 1; |
---|
880 | case 'x': |
---|
881 | base = 16; |
---|
882 | goto handle_nosign; |
---|
883 | case 'y': |
---|
884 | base = 16; |
---|
885 | sign = 1; |
---|
886 | goto handle_sign; |
---|
887 | case 'z': |
---|
888 | zflag = 1; |
---|
889 | goto reswitch; |
---|
890 | handle_nosign: |
---|
891 | sign = 0; |
---|
892 | if (jflag) |
---|
893 | num = va_arg(ap, uintmax_t); |
---|
894 | else if (qflag) |
---|
895 | num = va_arg(ap, u_quad_t); |
---|
896 | else if (tflag) |
---|
897 | num = va_arg(ap, ptrdiff_t); |
---|
898 | else if (lflag) |
---|
899 | num = va_arg(ap, u_long); |
---|
900 | else if (zflag) |
---|
901 | num = va_arg(ap, size_t); |
---|
902 | else if (hflag) |
---|
903 | num = (u_short)va_arg(ap, int); |
---|
904 | else if (cflag) |
---|
905 | num = (u_char)va_arg(ap, int); |
---|
906 | else |
---|
907 | num = va_arg(ap, u_int); |
---|
908 | goto number; |
---|
909 | handle_sign: |
---|
910 | if (jflag) |
---|
911 | num = va_arg(ap, intmax_t); |
---|
912 | else if (qflag) |
---|
913 | num = va_arg(ap, quad_t); |
---|
914 | else if (tflag) |
---|
915 | num = va_arg(ap, ptrdiff_t); |
---|
916 | else if (lflag) |
---|
917 | num = va_arg(ap, long); |
---|
918 | else if (zflag) |
---|
919 | num = va_arg(ap, ssize_t); |
---|
920 | else if (hflag) |
---|
921 | num = (short)va_arg(ap, int); |
---|
922 | else if (cflag) |
---|
923 | num = (char)va_arg(ap, int); |
---|
924 | else |
---|
925 | num = va_arg(ap, int); |
---|
926 | number: |
---|
927 | if (sign && (intmax_t)num < 0) { |
---|
928 | neg = 1; |
---|
929 | num = -(intmax_t)num; |
---|
930 | } |
---|
931 | p = ksprintn(nbuf, num, base, &n, upper); |
---|
932 | tmp = 0; |
---|
933 | if (sharpflag && num != 0) { |
---|
934 | if (base == 8) |
---|
935 | tmp++; |
---|
936 | else if (base == 16) |
---|
937 | tmp += 2; |
---|
938 | } |
---|
939 | if (neg) |
---|
940 | tmp++; |
---|
941 | |
---|
942 | if (!ladjust && padc == '0') |
---|
943 | dwidth = width - tmp; |
---|
944 | width -= tmp + imax(dwidth, n); |
---|
945 | dwidth -= n; |
---|
946 | if (!ladjust) |
---|
947 | while (width-- > 0) |
---|
948 | PCHAR(' '); |
---|
949 | if (neg) |
---|
950 | PCHAR('-'); |
---|
951 | if (sharpflag && num != 0) { |
---|
952 | if (base == 8) { |
---|
953 | PCHAR('0'); |
---|
954 | } else if (base == 16) { |
---|
955 | PCHAR('0'); |
---|
956 | PCHAR('x'); |
---|
957 | } |
---|
958 | } |
---|
959 | while (dwidth-- > 0) |
---|
960 | PCHAR('0'); |
---|
961 | |
---|
962 | while (*p) |
---|
963 | PCHAR(*p--); |
---|
964 | |
---|
965 | if (ladjust) |
---|
966 | while (width-- > 0) |
---|
967 | PCHAR(' '); |
---|
968 | |
---|
969 | break; |
---|
970 | default: |
---|
971 | while (percent < fmt) |
---|
972 | PCHAR(*percent++); |
---|
973 | /* |
---|
974 | * Since we ignore a formatting argument it is no |
---|
975 | * longer safe to obey the remaining formatting |
---|
976 | * arguments as the arguments will no longer match |
---|
977 | * the format specs. |
---|
978 | */ |
---|
979 | stop = 1; |
---|
980 | break; |
---|
981 | } |
---|
982 | } |
---|
983 | #undef PCHAR |
---|
984 | } |
---|
985 | |
---|
986 | #ifndef __rtems__ |
---|
987 | /* |
---|
988 | * Put character in log buffer with a particular priority. |
---|
989 | */ |
---|
990 | static void |
---|
991 | msglogchar(int c, int pri) |
---|
992 | { |
---|
993 | static int lastpri = -1; |
---|
994 | static int dangling; |
---|
995 | char nbuf[MAXNBUF]; |
---|
996 | char *p; |
---|
997 | |
---|
998 | if (!msgbufmapped) |
---|
999 | return; |
---|
1000 | if (c == '\0' || c == '\r') |
---|
1001 | return; |
---|
1002 | if (pri != -1 && pri != lastpri) { |
---|
1003 | if (dangling) { |
---|
1004 | msgbuf_addchar(msgbufp, '\n'); |
---|
1005 | dangling = 0; |
---|
1006 | } |
---|
1007 | msgbuf_addchar(msgbufp, '<'); |
---|
1008 | for (p = ksprintn(nbuf, (uintmax_t)pri, 10, NULL, 0); *p;) |
---|
1009 | msgbuf_addchar(msgbufp, *p--); |
---|
1010 | msgbuf_addchar(msgbufp, '>'); |
---|
1011 | lastpri = pri; |
---|
1012 | } |
---|
1013 | msgbuf_addchar(msgbufp, c); |
---|
1014 | if (c == '\n') { |
---|
1015 | dangling = 0; |
---|
1016 | lastpri = -1; |
---|
1017 | } else { |
---|
1018 | dangling = 1; |
---|
1019 | } |
---|
1020 | } |
---|
1021 | |
---|
1022 | static void |
---|
1023 | msglogstr(char *str, int pri, int filter_cr) |
---|
1024 | { |
---|
1025 | if (!msgbufmapped) |
---|
1026 | return; |
---|
1027 | |
---|
1028 | msgbuf_addstr(msgbufp, pri, str, filter_cr); |
---|
1029 | } |
---|
1030 | |
---|
1031 | void |
---|
1032 | msgbufinit(void *ptr, int size) |
---|
1033 | { |
---|
1034 | char *cp; |
---|
1035 | static struct msgbuf *oldp = NULL; |
---|
1036 | |
---|
1037 | size -= sizeof(*msgbufp); |
---|
1038 | cp = (char *)ptr; |
---|
1039 | msgbufp = (struct msgbuf *)(cp + size); |
---|
1040 | msgbuf_reinit(msgbufp, cp, size); |
---|
1041 | if (msgbufmapped && oldp != msgbufp) |
---|
1042 | msgbuf_copy(oldp, msgbufp); |
---|
1043 | msgbufmapped = 1; |
---|
1044 | oldp = msgbufp; |
---|
1045 | } |
---|
1046 | |
---|
1047 | static int unprivileged_read_msgbuf = 1; |
---|
1048 | SYSCTL_INT(_security_bsd, OID_AUTO, unprivileged_read_msgbuf, |
---|
1049 | CTLFLAG_RW, &unprivileged_read_msgbuf, 0, |
---|
1050 | "Unprivileged processes may read the kernel message buffer"); |
---|
1051 | |
---|
1052 | /* Sysctls for accessing/clearing the msgbuf */ |
---|
1053 | static int |
---|
1054 | sysctl_kern_msgbuf(SYSCTL_HANDLER_ARGS) |
---|
1055 | { |
---|
1056 | char buf[128]; |
---|
1057 | u_int seq; |
---|
1058 | int error, len; |
---|
1059 | |
---|
1060 | if (!unprivileged_read_msgbuf) { |
---|
1061 | error = priv_check(req->td, PRIV_MSGBUF); |
---|
1062 | if (error) |
---|
1063 | return (error); |
---|
1064 | } |
---|
1065 | |
---|
1066 | /* Read the whole buffer, one chunk at a time. */ |
---|
1067 | mtx_lock(&msgbuf_lock); |
---|
1068 | msgbuf_peekbytes(msgbufp, NULL, 0, &seq); |
---|
1069 | for (;;) { |
---|
1070 | len = msgbuf_peekbytes(msgbufp, buf, sizeof(buf), &seq); |
---|
1071 | mtx_unlock(&msgbuf_lock); |
---|
1072 | if (len == 0) |
---|
1073 | return (SYSCTL_OUT(req, "", 1)); /* add nulterm */ |
---|
1074 | |
---|
1075 | error = sysctl_handle_opaque(oidp, buf, len, req); |
---|
1076 | if (error) |
---|
1077 | return (error); |
---|
1078 | |
---|
1079 | mtx_lock(&msgbuf_lock); |
---|
1080 | } |
---|
1081 | } |
---|
1082 | |
---|
1083 | SYSCTL_PROC(_kern, OID_AUTO, msgbuf, |
---|
1084 | CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, |
---|
1085 | NULL, 0, sysctl_kern_msgbuf, "A", "Contents of kernel message buffer"); |
---|
1086 | |
---|
1087 | static int msgbuf_clearflag; |
---|
1088 | |
---|
1089 | static int |
---|
1090 | sysctl_kern_msgbuf_clear(SYSCTL_HANDLER_ARGS) |
---|
1091 | { |
---|
1092 | int error; |
---|
1093 | error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req); |
---|
1094 | if (!error && req->newptr) { |
---|
1095 | mtx_lock(&msgbuf_lock); |
---|
1096 | msgbuf_clear(msgbufp); |
---|
1097 | mtx_unlock(&msgbuf_lock); |
---|
1098 | msgbuf_clearflag = 0; |
---|
1099 | } |
---|
1100 | return (error); |
---|
1101 | } |
---|
1102 | |
---|
1103 | SYSCTL_PROC(_kern, OID_AUTO, msgbuf_clear, |
---|
1104 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_SECURE | CTLFLAG_MPSAFE, |
---|
1105 | &msgbuf_clearflag, 0, sysctl_kern_msgbuf_clear, "I", |
---|
1106 | "Clear kernel message buffer"); |
---|
1107 | |
---|
1108 | #ifdef DDB |
---|
1109 | |
---|
1110 | DB_SHOW_COMMAND(msgbuf, db_show_msgbuf) |
---|
1111 | { |
---|
1112 | int i, j; |
---|
1113 | |
---|
1114 | if (!msgbufmapped) { |
---|
1115 | db_printf("msgbuf not mapped yet\n"); |
---|
1116 | return; |
---|
1117 | } |
---|
1118 | db_printf("msgbufp = %p\n", msgbufp); |
---|
1119 | db_printf("magic = %x, size = %d, r= %u, w = %u, ptr = %p, cksum= %u\n", |
---|
1120 | msgbufp->msg_magic, msgbufp->msg_size, msgbufp->msg_rseq, |
---|
1121 | msgbufp->msg_wseq, msgbufp->msg_ptr, msgbufp->msg_cksum); |
---|
1122 | for (i = 0; i < msgbufp->msg_size && !db_pager_quit; i++) { |
---|
1123 | j = MSGBUF_SEQ_TO_POS(msgbufp, i + msgbufp->msg_rseq); |
---|
1124 | db_printf("%c", msgbufp->msg_ptr[j]); |
---|
1125 | } |
---|
1126 | db_printf("\n"); |
---|
1127 | } |
---|
1128 | |
---|
1129 | #endif /* DDB */ |
---|
1130 | |
---|
1131 | void |
---|
1132 | hexdump(const void *ptr, int length, const char *hdr, int flags) |
---|
1133 | { |
---|
1134 | int i, j, k; |
---|
1135 | int cols; |
---|
1136 | const unsigned char *cp; |
---|
1137 | char delim; |
---|
1138 | |
---|
1139 | if ((flags & HD_DELIM_MASK) != 0) |
---|
1140 | delim = (flags & HD_DELIM_MASK) >> 8; |
---|
1141 | else |
---|
1142 | delim = ' '; |
---|
1143 | |
---|
1144 | if ((flags & HD_COLUMN_MASK) != 0) |
---|
1145 | cols = flags & HD_COLUMN_MASK; |
---|
1146 | else |
---|
1147 | cols = 16; |
---|
1148 | |
---|
1149 | cp = ptr; |
---|
1150 | for (i = 0; i < length; i+= cols) { |
---|
1151 | if (hdr != NULL) |
---|
1152 | printf("%s", hdr); |
---|
1153 | |
---|
1154 | if ((flags & HD_OMIT_COUNT) == 0) |
---|
1155 | printf("%04x ", i); |
---|
1156 | |
---|
1157 | if ((flags & HD_OMIT_HEX) == 0) { |
---|
1158 | for (j = 0; j < cols; j++) { |
---|
1159 | k = i + j; |
---|
1160 | if (k < length) |
---|
1161 | printf("%c%02x", delim, cp[k]); |
---|
1162 | else |
---|
1163 | printf(" "); |
---|
1164 | } |
---|
1165 | } |
---|
1166 | |
---|
1167 | if ((flags & HD_OMIT_CHARS) == 0) { |
---|
1168 | printf(" |"); |
---|
1169 | for (j = 0; j < cols; j++) { |
---|
1170 | k = i + j; |
---|
1171 | if (k >= length) |
---|
1172 | printf(" "); |
---|
1173 | else if (cp[k] >= ' ' && cp[k] <= '~') |
---|
1174 | printf("%c", cp[k]); |
---|
1175 | else |
---|
1176 | printf("."); |
---|
1177 | } |
---|
1178 | printf("|"); |
---|
1179 | } |
---|
1180 | printf("\n"); |
---|
1181 | } |
---|
1182 | } |
---|
1183 | #endif /* __rtems__ */ |
---|
1184 | #endif /* _KERNEL */ |
---|
1185 | |
---|
1186 | void |
---|
1187 | sbuf_hexdump(struct sbuf *sb, const void *ptr, int length, const char *hdr, |
---|
1188 | int flags) |
---|
1189 | { |
---|
1190 | int i, j, k; |
---|
1191 | int cols; |
---|
1192 | const unsigned char *cp; |
---|
1193 | char delim; |
---|
1194 | |
---|
1195 | if ((flags & HD_DELIM_MASK) != 0) |
---|
1196 | delim = (flags & HD_DELIM_MASK) >> 8; |
---|
1197 | else |
---|
1198 | delim = ' '; |
---|
1199 | |
---|
1200 | if ((flags & HD_COLUMN_MASK) != 0) |
---|
1201 | cols = flags & HD_COLUMN_MASK; |
---|
1202 | else |
---|
1203 | cols = 16; |
---|
1204 | |
---|
1205 | cp = ptr; |
---|
1206 | for (i = 0; i < length; i+= cols) { |
---|
1207 | if (hdr != NULL) |
---|
1208 | sbuf_printf(sb, "%s", hdr); |
---|
1209 | |
---|
1210 | if ((flags & HD_OMIT_COUNT) == 0) |
---|
1211 | sbuf_printf(sb, "%04x ", i); |
---|
1212 | |
---|
1213 | if ((flags & HD_OMIT_HEX) == 0) { |
---|
1214 | for (j = 0; j < cols; j++) { |
---|
1215 | k = i + j; |
---|
1216 | if (k < length) |
---|
1217 | sbuf_printf(sb, "%c%02x", delim, cp[k]); |
---|
1218 | else |
---|
1219 | sbuf_printf(sb, " "); |
---|
1220 | } |
---|
1221 | } |
---|
1222 | |
---|
1223 | if ((flags & HD_OMIT_CHARS) == 0) { |
---|
1224 | sbuf_printf(sb, " |"); |
---|
1225 | for (j = 0; j < cols; j++) { |
---|
1226 | k = i + j; |
---|
1227 | if (k >= length) |
---|
1228 | sbuf_printf(sb, " "); |
---|
1229 | else if (cp[k] >= ' ' && cp[k] <= '~') |
---|
1230 | sbuf_printf(sb, "%c", cp[k]); |
---|
1231 | else |
---|
1232 | sbuf_printf(sb, "."); |
---|
1233 | } |
---|
1234 | sbuf_printf(sb, "|"); |
---|
1235 | } |
---|
1236 | sbuf_printf(sb, "\n"); |
---|
1237 | } |
---|
1238 | } |
---|
1239 | |
---|
1240 | #ifndef __rtems__ |
---|
1241 | #ifdef _KERNEL |
---|
1242 | void |
---|
1243 | counted_warning(unsigned *counter, const char *msg) |
---|
1244 | { |
---|
1245 | struct thread *td; |
---|
1246 | unsigned c; |
---|
1247 | |
---|
1248 | for (;;) { |
---|
1249 | c = *counter; |
---|
1250 | if (c == 0) |
---|
1251 | break; |
---|
1252 | if (atomic_cmpset_int(counter, c, c - 1)) { |
---|
1253 | td = curthread; |
---|
1254 | log(LOG_INFO, "pid %d (%s) %s%s\n", |
---|
1255 | td->td_proc->p_pid, td->td_name, msg, |
---|
1256 | c > 1 ? "" : " - not logging anymore"); |
---|
1257 | break; |
---|
1258 | } |
---|
1259 | } |
---|
1260 | } |
---|
1261 | #endif |
---|
1262 | #endif /* __rtems__ */ |
---|