1 | /*
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2 | Copyright (c) 2001-2006, Gerrit Pape
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3 | All rights reserved.
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4 |
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5 | Redistribution and use in source and binary forms, with or without
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6 | modification, are permitted provided that the following conditions are met:
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7 |
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8 | 1. Redistributions of source code must retain the above copyright notice,
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9 | this list of conditions and the following disclaimer.
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10 | 2. Redistributions in binary form must reproduce the above copyright
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11 | notice, this list of conditions and the following disclaimer in the
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12 | documentation and/or other materials provided with the distribution.
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13 | 3. The name of the author may not be used to endorse or promote products
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14 | derived from this software without specific prior written permission.
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15 |
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16 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 | WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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19 | EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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20 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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22 | OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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23 | WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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24 | OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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25 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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26 | */
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27 |
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28 | /* Busyboxed by Denys Vlasenko <vda.linux@googlemail.com> */
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29 | /* TODO: depends on runit_lib.c - review and reduce/eliminate */
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30 |
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31 | /*
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32 | Config files
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33 |
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34 | On startup, and after receiving a HUP signal, svlogd checks for each
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35 | log directory log if the configuration file log/config exists,
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36 | and if so, reads the file line by line and adjusts configuration
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37 | for log as follows:
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38 |
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39 | If the line is empty, or starts with a #, it is ignored. A line
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40 | of the form
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41 |
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42 | ssize
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43 | sets the maximum file size of current when svlogd should rotate
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44 | the current log file to size bytes. Default is 1000000.
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45 | If size is zero, svlogd doesnt rotate log files
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46 | You should set size to at least (2 * len).
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47 | nnum
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48 | sets the number of old log files svlogd should maintain to num.
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49 | If svlogd sees more that num old log files in log after log file
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50 | rotation, it deletes the oldest one. Default is 10.
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51 | If num is zero, svlogd doesnt remove old log files.
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52 | Nmin
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53 | sets the minimum number of old log files svlogd should maintain
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54 | to min. min must be less than num. If min is set, and svlogd
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55 | cannot write to current because the filesystem is full,
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56 | and it sees more than min old log files, it deletes the oldest one.
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57 | ttimeout
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58 | sets the maximum age of the current log file when svlogd should
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59 | rotate the current log file to timeout seconds. If current
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60 | is timeout seconds old, and is not empty, svlogd forces log file rotation.
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61 | !processor
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62 | tells svlogd to feed each recent log file through processor
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63 | (see above) on log file rotation. By default log files are not processed.
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64 | ua.b.c.d[:port]
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65 | tells svlogd to transmit the first len characters of selected
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66 | log messages to the IP address a.b.c.d, port number port.
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67 | If port isnt set, the default port for syslog is used (514).
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68 | len can be set through the -l option, see below. If svlogd
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69 | has trouble sending udp packets, it writes error messages
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70 | to the log directory. Attention: logging through udp is unreliable,
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71 | and should be used in private networks only.
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72 | Ua.b.c.d[:port]
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73 | is the same as the u line above, but the log messages are no longer
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74 | written to the log directory, but transmitted through udp only.
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75 | Error messages from svlogd concerning sending udp packages still go
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76 | to the log directory.
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77 | pprefix
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78 | tells svlogd to prefix each line to be written to the log directory,
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79 | to standard error, or through UDP, with prefix.
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80 |
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81 | If a line starts with a -, +, e, or E, svlogd matches the first len characters
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82 | of each log message against pattern and acts accordingly:
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83 |
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84 | -pattern
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85 | the log message is deselected.
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86 | +pattern
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87 | the log message is selected.
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88 | epattern
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89 | the log message is selected to be printed to standard error.
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90 | Epattern
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91 | the log message is deselected to be printed to standard error.
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92 |
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93 | Initially each line is selected to be written to log/current. Deselected
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94 | log messages are discarded from log. Initially each line is deselected
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95 | to be written to standard err. Log messages selected for standard error
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96 | are written to standard error.
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97 |
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98 | Pattern Matching
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99 |
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100 | svlogd matches a log message against the string pattern as follows:
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101 |
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102 | pattern is applied to the log message one character by one, starting
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103 | with the first. A character not a star (*) and not a plus (+) matches itself.
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104 | A plus matches the next character in pattern in the log message one
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105 | or more times. A star before the end of pattern matches any string
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106 | in the log message that does not include the next character in pattern.
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107 | A star at the end of pattern matches any string.
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108 |
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109 | Timestamps optionally added by svlogd are not considered part
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110 | of the log message.
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111 |
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112 | An svlogd pattern is not a regular expression. For example consider
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113 | a log message like this
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114 |
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115 | 2005-12-18_09:13:50.97618 tcpsvd: info: pid 1977 from 10.4.1.14
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116 |
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117 | The following pattern doesnt match
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118 |
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119 | -*pid*
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120 |
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121 | because the first star matches up to the first p in tcpsvd,
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122 | and then the match fails because i is not s. To match this
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123 | log message, you can use a pattern like this instead
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124 |
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125 | -*: *: pid *
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126 | */
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127 |
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128 | //usage:#define svlogd_trivial_usage
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129 | //usage: "[-ttv] [-r C] [-R CHARS] [-l MATCHLEN] [-b BUFLEN] DIR..."
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130 | //usage:#define svlogd_full_usage "\n\n"
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131 | //usage: "Continuously read log data from stdin and write to rotated log files in DIRs"
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132 | //usage: "\n"
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133 | //usage: "\n""DIR/config file modifies behavior:"
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134 | //usage: "\n""sSIZE - when to rotate logs"
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135 | //usage: "\n""nNUM - number of files to retain"
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136 | /*usage: "\n""NNUM - min number files to retain" - confusing */
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137 | /*usage: "\n""tSEC - rotate file if it get SEC seconds old" - confusing */
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138 | //usage: "\n""!PROG - process rotated log with PROG"
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139 | /*usage: "\n""uIPADDR - send log over UDP" - unsupported */
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140 | /*usage: "\n""UIPADDR - send log over UDP and DONT log" - unsupported */
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141 | /*usage: "\n""pPFX - prefix each line with PFX" - unsupported */
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142 | //usage: "\n""+,-PATTERN - (de)select line for logging"
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143 | //usage: "\n""E,ePATTERN - (de)select line for stderr"
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144 |
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145 | #include <sys/poll.h>
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146 | #include <sys/file.h>
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147 | #include "libbb.h"
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148 | #include "runit_lib.h"
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149 |
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150 | #define LESS(a,b) ((int)((unsigned)(b) - (unsigned)(a)) > 0)
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151 |
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152 | #define FMT_PTIME 30
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153 |
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154 | struct logdir {
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155 | ////char *btmp;
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156 | /* pattern list to match, in "aa\0bb\0\cc\0\0" form */
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157 | char *inst;
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158 | char *processor;
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159 | char *name;
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160 | unsigned size;
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161 | unsigned sizemax;
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162 | unsigned nmax;
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163 | unsigned nmin;
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164 | unsigned rotate_period;
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165 | int ppid;
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166 | int fddir;
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167 | int fdcur;
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168 | FILE* filecur; ////
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169 | int fdlock;
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170 | unsigned next_rotate;
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171 | char fnsave[FMT_PTIME];
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172 | char match;
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173 | char matcherr;
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174 | };
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175 |
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176 |
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177 | struct globals {
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178 | struct logdir *dir;
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179 | unsigned verbose;
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180 | int linemax;
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181 | ////int buflen;
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182 | int linelen;
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183 |
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184 | int fdwdir;
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185 | char **fndir;
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186 | int wstat;
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187 | unsigned nearest_rotate;
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188 |
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189 | void* (*memRchr)(const void *, int, size_t);
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190 | char *shell;
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191 |
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192 | smallint exitasap;
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193 | smallint rotateasap;
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194 | smallint reopenasap;
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195 | smallint linecomplete;
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196 | smallint tmaxflag;
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197 |
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198 | char repl;
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199 | const char *replace;
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200 | int fl_flag_0;
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201 | unsigned dirn;
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202 |
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203 | sigset_t blocked_sigset;
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204 | };
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205 | #define G (*ptr_to_globals)
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206 | #define dir (G.dir )
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207 | #define verbose (G.verbose )
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208 | #define linemax (G.linemax )
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209 | #define buflen (G.buflen )
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210 | #define linelen (G.linelen )
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211 | #define fndir (G.fndir )
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212 | #define fdwdir (G.fdwdir )
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213 | #define wstat (G.wstat )
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214 | #define memRchr (G.memRchr )
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215 | #define nearest_rotate (G.nearest_rotate)
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216 | #define exitasap (G.exitasap )
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217 | #define rotateasap (G.rotateasap )
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218 | #define reopenasap (G.reopenasap )
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219 | #define linecomplete (G.linecomplete )
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220 | #define tmaxflag (G.tmaxflag )
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221 | #define repl (G.repl )
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222 | #define replace (G.replace )
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223 | #define blocked_sigset (G.blocked_sigset)
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224 | #define fl_flag_0 (G.fl_flag_0 )
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225 | #define dirn (G.dirn )
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226 | #define INIT_G() do { \
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227 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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228 | linemax = 1000; \
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229 | /*buflen = 1024;*/ \
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230 | linecomplete = 1; \
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231 | replace = ""; \
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232 | } while (0)
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233 |
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234 | #define line bb_common_bufsiz1
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235 |
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236 |
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237 | #define FATAL "fatal: "
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238 | #define WARNING "warning: "
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239 | #define PAUSE "pausing: "
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240 | #define INFO "info: "
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241 |
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242 | static void fatalx(const char *m0)
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243 | {
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244 | bb_error_msg_and_die(FATAL"%s", m0);
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245 | }
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246 | static void warn(const char *m0)
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247 | {
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248 | bb_perror_msg(WARNING"%s", m0);
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249 | }
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250 | static void warn2(const char *m0, const char *m1)
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251 | {
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252 | bb_perror_msg(WARNING"%s: %s", m0, m1);
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253 | }
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254 | static void warnx(const char *m0, const char *m1)
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255 | {
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256 | bb_error_msg(WARNING"%s: %s", m0, m1);
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257 | }
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258 | static void pause_nomem(void)
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259 | {
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260 | bb_error_msg(PAUSE"out of memory");
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261 | sleep(3);
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262 | }
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263 | static void pause1cannot(const char *m0)
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264 | {
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265 | bb_perror_msg(PAUSE"can't %s", m0);
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266 | sleep(3);
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267 | }
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268 | static void pause2cannot(const char *m0, const char *m1)
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269 | {
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270 | bb_perror_msg(PAUSE"can't %s %s", m0, m1);
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271 | sleep(3);
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272 | }
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273 |
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274 | static char* wstrdup(const char *str)
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275 | {
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276 | char *s;
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277 | while (!(s = strdup(str)))
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278 | pause_nomem();
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279 | return s;
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280 | }
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281 |
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282 | static unsigned pmatch(const char *p, const char *s, unsigned len)
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283 | {
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284 | for (;;) {
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285 | char c = *p++;
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286 | if (!c) return !len;
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287 | switch (c) {
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288 | case '*':
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289 | c = *p;
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290 | if (!c) return 1;
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291 | for (;;) {
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292 | if (!len) return 0;
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293 | if (*s == c) break;
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294 | ++s;
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295 | --len;
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296 | }
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297 | continue;
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298 | case '+':
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299 | c = *p++;
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300 | if (c != *s) return 0;
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301 | for (;;) {
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302 | if (!len) return 1;
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303 | if (*s != c) break;
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304 | ++s;
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305 | --len;
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306 | }
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307 | continue;
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308 | /*
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309 | case '?':
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310 | if (*p == '?') {
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311 | if (*s != '?') return 0;
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312 | ++p;
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313 | }
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314 | ++s; --len;
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315 | continue;
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316 | */
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317 | default:
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318 | if (!len) return 0;
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319 | if (*s != c) return 0;
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320 | ++s;
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321 | --len;
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322 | continue;
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323 | }
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324 | }
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325 | return 0;
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326 | }
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327 |
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328 | /*** ex fmt_ptime.[ch] ***/
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329 |
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330 | /* NUL terminated */
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331 | static void fmt_time_human_30nul(char *s)
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332 | {
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333 | struct tm *ptm;
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334 | struct timeval tv;
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335 |
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336 | gettimeofday(&tv, NULL);
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337 | ptm = gmtime(&tv.tv_sec);
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338 | sprintf(s, "%04u-%02u-%02u_%02u:%02u:%02u.%06u000",
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339 | (unsigned)(1900 + ptm->tm_year),
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340 | (unsigned)(ptm->tm_mon + 1),
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341 | (unsigned)(ptm->tm_mday),
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342 | (unsigned)(ptm->tm_hour),
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343 | (unsigned)(ptm->tm_min),
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344 | (unsigned)(ptm->tm_sec),
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345 | (unsigned)(tv.tv_usec)
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346 | );
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347 | /* 4+1 + 2+1 + 2+1 + 2+1 + 2+1 + 2+1 + 9 = */
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348 | /* 5 + 3 + 3 + 3 + 3 + 3 + 9 = */
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349 | /* 20 (up to '.' inclusive) + 9 (not including '\0') */
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350 | }
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351 |
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352 | /* NOT terminated! */
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353 | static void fmt_time_bernstein_25(char *s)
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354 | {
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355 | uint32_t pack[3];
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356 | struct timeval tv;
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357 | unsigned sec_hi;
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358 |
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359 | gettimeofday(&tv, NULL);
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360 | sec_hi = (0x400000000000000aULL + tv.tv_sec) >> 32;
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361 | tv.tv_sec = (time_t)(0x400000000000000aULL) + tv.tv_sec;
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362 | tv.tv_usec *= 1000;
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363 | /* Network order is big-endian: most significant byte first.
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364 | * This is exactly what we want here */
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365 | pack[0] = htonl(sec_hi);
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366 | pack[1] = htonl(tv.tv_sec);
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367 | pack[2] = htonl(tv.tv_usec);
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368 | *s++ = '@';
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369 | bin2hex(s, (char*)pack, 12);
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370 | }
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371 |
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372 | static void processorstart(struct logdir *ld)
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373 | {
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374 | char sv_ch;
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375 | int pid;
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376 |
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377 | if (!ld->processor) return;
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378 | if (ld->ppid) {
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379 | warnx("processor already running", ld->name);
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380 | return;
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381 | }
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382 |
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383 | /* vfork'ed child trashes this byte, save... */
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384 | sv_ch = ld->fnsave[26];
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385 |
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386 | if (!G.shell)
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387 | G.shell = xstrdup(get_shell_name());
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388 |
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389 | while ((pid = vfork()) == -1)
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390 | pause2cannot("vfork for processor", ld->name);
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391 | if (!pid) {
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392 | int fd;
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393 |
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394 | /* child */
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395 | /* Non-ignored signals revert to SIG_DFL on exec anyway */
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396 | /*bb_signals(0
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397 | + (1 << SIGTERM)
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398 | + (1 << SIGALRM)
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399 | + (1 << SIGHUP)
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400 | , SIG_DFL);*/
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401 | sig_unblock(SIGTERM);
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402 | sig_unblock(SIGALRM);
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403 | sig_unblock(SIGHUP);
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404 |
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405 | if (verbose)
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406 | bb_error_msg(INFO"processing: %s/%s", ld->name, ld->fnsave);
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407 | fd = xopen(ld->fnsave, O_RDONLY|O_NDELAY);
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408 | xmove_fd(fd, 0);
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409 | ld->fnsave[26] = 't'; /* <- that's why we need sv_ch! */
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410 | fd = xopen(ld->fnsave, O_WRONLY|O_NDELAY|O_TRUNC|O_CREAT);
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411 | xmove_fd(fd, 1);
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412 | fd = open("state", O_RDONLY|O_NDELAY);
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413 | if (fd == -1) {
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414 | if (errno != ENOENT)
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415 | bb_perror_msg_and_die(FATAL"can't %s processor %s", "open state for", ld->name);
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416 | close(xopen("state", O_WRONLY|O_NDELAY|O_TRUNC|O_CREAT));
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417 | fd = xopen("state", O_RDONLY|O_NDELAY);
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418 | }
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419 | xmove_fd(fd, 4);
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420 | fd = xopen("newstate", O_WRONLY|O_NDELAY|O_TRUNC|O_CREAT);
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421 | xmove_fd(fd, 5);
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422 |
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423 | execl(G.shell, G.shell, "-c", ld->processor, (char*) NULL);
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424 | bb_perror_msg_and_die(FATAL"can't %s processor %s", "run", ld->name);
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425 | }
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426 | ld->fnsave[26] = sv_ch; /* ...restore */
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427 | ld->ppid = pid;
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428 | }
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429 |
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430 | static unsigned processorstop(struct logdir *ld)
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431 | {
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432 | char f[28];
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433 |
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434 | if (ld->ppid) {
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435 | sig_unblock(SIGHUP);
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436 | while (safe_waitpid(ld->ppid, &wstat, 0) == -1)
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437 | pause2cannot("wait for processor", ld->name);
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438 | sig_block(SIGHUP);
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439 | ld->ppid = 0;
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440 | }
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441 | if (ld->fddir == -1)
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442 | return 1;
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443 | while (fchdir(ld->fddir) == -1)
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444 | pause2cannot("change directory, want processor", ld->name);
|
---|
445 | if (WEXITSTATUS(wstat) != 0) {
|
---|
446 | warnx("processor failed, restart", ld->name);
|
---|
447 | ld->fnsave[26] = 't';
|
---|
448 | unlink(ld->fnsave);
|
---|
449 | ld->fnsave[26] = 'u';
|
---|
450 | processorstart(ld);
|
---|
451 | while (fchdir(fdwdir) == -1)
|
---|
452 | pause1cannot("change to initial working directory");
|
---|
453 | return ld->processor ? 0 : 1;
|
---|
454 | }
|
---|
455 | ld->fnsave[26] = 't';
|
---|
456 | memcpy(f, ld->fnsave, 26);
|
---|
457 | f[26] = 's';
|
---|
458 | f[27] = '\0';
|
---|
459 | while (rename(ld->fnsave, f) == -1)
|
---|
460 | pause2cannot("rename processed", ld->name);
|
---|
461 | while (chmod(f, 0744) == -1)
|
---|
462 | pause2cannot("set mode of processed", ld->name);
|
---|
463 | ld->fnsave[26] = 'u';
|
---|
464 | if (unlink(ld->fnsave) == -1)
|
---|
465 | bb_error_msg(WARNING"can't unlink: %s/%s", ld->name, ld->fnsave);
|
---|
466 | while (rename("newstate", "state") == -1)
|
---|
467 | pause2cannot("rename state", ld->name);
|
---|
468 | if (verbose)
|
---|
469 | bb_error_msg(INFO"processed: %s/%s", ld->name, f);
|
---|
470 | while (fchdir(fdwdir) == -1)
|
---|
471 | pause1cannot("change to initial working directory");
|
---|
472 | return 1;
|
---|
473 | }
|
---|
474 |
|
---|
475 | static void rmoldest(struct logdir *ld)
|
---|
476 | {
|
---|
477 | DIR *d;
|
---|
478 | struct dirent *f;
|
---|
479 | char oldest[FMT_PTIME];
|
---|
480 | int n = 0;
|
---|
481 |
|
---|
482 | oldest[0] = 'A'; oldest[1] = oldest[27] = 0;
|
---|
483 | while (!(d = opendir(".")))
|
---|
484 | pause2cannot("open directory, want rotate", ld->name);
|
---|
485 | errno = 0;
|
---|
486 | while ((f = readdir(d))) {
|
---|
487 | if ((f->d_name[0] == '@') && (strlen(f->d_name) == 27)) {
|
---|
488 | if (f->d_name[26] == 't') {
|
---|
489 | if (unlink(f->d_name) == -1)
|
---|
490 | warn2("can't unlink processor leftover", f->d_name);
|
---|
491 | } else {
|
---|
492 | ++n;
|
---|
493 | if (strcmp(f->d_name, oldest) < 0)
|
---|
494 | memcpy(oldest, f->d_name, 27);
|
---|
495 | }
|
---|
496 | errno = 0;
|
---|
497 | }
|
---|
498 | }
|
---|
499 | if (errno)
|
---|
500 | warn2("can't read directory", ld->name);
|
---|
501 | closedir(d);
|
---|
502 |
|
---|
503 | if (ld->nmax && (n > ld->nmax)) {
|
---|
504 | if (verbose)
|
---|
505 | bb_error_msg(INFO"delete: %s/%s", ld->name, oldest);
|
---|
506 | if ((*oldest == '@') && (unlink(oldest) == -1))
|
---|
507 | warn2("can't unlink oldest logfile", ld->name);
|
---|
508 | }
|
---|
509 | }
|
---|
510 |
|
---|
511 | static unsigned rotate(struct logdir *ld)
|
---|
512 | {
|
---|
513 | struct stat st;
|
---|
514 | unsigned now;
|
---|
515 |
|
---|
516 | if (ld->fddir == -1) {
|
---|
517 | ld->rotate_period = 0;
|
---|
518 | return 0;
|
---|
519 | }
|
---|
520 | if (ld->ppid)
|
---|
521 | while (!processorstop(ld))
|
---|
522 | continue;
|
---|
523 |
|
---|
524 | while (fchdir(ld->fddir) == -1)
|
---|
525 | pause2cannot("change directory, want rotate", ld->name);
|
---|
526 |
|
---|
527 | /* create new filename */
|
---|
528 | ld->fnsave[25] = '.';
|
---|
529 | ld->fnsave[26] = 's';
|
---|
530 | if (ld->processor)
|
---|
531 | ld->fnsave[26] = 'u';
|
---|
532 | ld->fnsave[27] = '\0';
|
---|
533 | do {
|
---|
534 | fmt_time_bernstein_25(ld->fnsave);
|
---|
535 | errno = 0;
|
---|
536 | stat(ld->fnsave, &st);
|
---|
537 | } while (errno != ENOENT);
|
---|
538 |
|
---|
539 | now = monotonic_sec();
|
---|
540 | if (ld->rotate_period && LESS(ld->next_rotate, now)) {
|
---|
541 | ld->next_rotate = now + ld->rotate_period;
|
---|
542 | if (LESS(ld->next_rotate, nearest_rotate))
|
---|
543 | nearest_rotate = ld->next_rotate;
|
---|
544 | }
|
---|
545 |
|
---|
546 | if (ld->size > 0) {
|
---|
547 | while (fflush(ld->filecur) || fsync(ld->fdcur) == -1)
|
---|
548 | pause2cannot("fsync current logfile", ld->name);
|
---|
549 | while (fchmod(ld->fdcur, 0744) == -1)
|
---|
550 | pause2cannot("set mode of current", ld->name);
|
---|
551 | ////close(ld->fdcur);
|
---|
552 | fclose(ld->filecur);
|
---|
553 |
|
---|
554 | if (verbose) {
|
---|
555 | bb_error_msg(INFO"rename: %s/current %s %u", ld->name,
|
---|
556 | ld->fnsave, ld->size);
|
---|
557 | }
|
---|
558 | while (rename("current", ld->fnsave) == -1)
|
---|
559 | pause2cannot("rename current", ld->name);
|
---|
560 | while ((ld->fdcur = open("current", O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600)) == -1)
|
---|
561 | pause2cannot("create new current", ld->name);
|
---|
562 | while ((ld->filecur = fdopen(ld->fdcur, "a")) == NULL) ////
|
---|
563 | pause2cannot("create new current", ld->name); /* very unlikely */
|
---|
564 | setvbuf(ld->filecur, NULL, _IOFBF, linelen); ////
|
---|
565 | close_on_exec_on(ld->fdcur);
|
---|
566 | ld->size = 0;
|
---|
567 | while (fchmod(ld->fdcur, 0644) == -1)
|
---|
568 | pause2cannot("set mode of current", ld->name);
|
---|
569 |
|
---|
570 | rmoldest(ld);
|
---|
571 | processorstart(ld);
|
---|
572 | }
|
---|
573 |
|
---|
574 | while (fchdir(fdwdir) == -1)
|
---|
575 | pause1cannot("change to initial working directory");
|
---|
576 | return 1;
|
---|
577 | }
|
---|
578 |
|
---|
579 | static int buffer_pwrite(int n, char *s, unsigned len)
|
---|
580 | {
|
---|
581 | int i;
|
---|
582 | struct logdir *ld = &dir[n];
|
---|
583 |
|
---|
584 | if (ld->sizemax) {
|
---|
585 | if (ld->size >= ld->sizemax)
|
---|
586 | rotate(ld);
|
---|
587 | if (len > (ld->sizemax - ld->size))
|
---|
588 | len = ld->sizemax - ld->size;
|
---|
589 | }
|
---|
590 | while (1) {
|
---|
591 | ////i = full_write(ld->fdcur, s, len);
|
---|
592 | ////if (i != -1) break;
|
---|
593 | i = fwrite(s, 1, len, ld->filecur);
|
---|
594 | if (i == len) break;
|
---|
595 |
|
---|
596 | if ((errno == ENOSPC) && (ld->nmin < ld->nmax)) {
|
---|
597 | DIR *d;
|
---|
598 | struct dirent *f;
|
---|
599 | char oldest[FMT_PTIME];
|
---|
600 | int j = 0;
|
---|
601 |
|
---|
602 | while (fchdir(ld->fddir) == -1)
|
---|
603 | pause2cannot("change directory, want remove old logfile",
|
---|
604 | ld->name);
|
---|
605 | oldest[0] = 'A';
|
---|
606 | oldest[1] = oldest[27] = '\0';
|
---|
607 | while (!(d = opendir(".")))
|
---|
608 | pause2cannot("open directory, want remove old logfile",
|
---|
609 | ld->name);
|
---|
610 | errno = 0;
|
---|
611 | while ((f = readdir(d)))
|
---|
612 | if ((f->d_name[0] == '@') && (strlen(f->d_name) == 27)) {
|
---|
613 | ++j;
|
---|
614 | if (strcmp(f->d_name, oldest) < 0)
|
---|
615 | memcpy(oldest, f->d_name, 27);
|
---|
616 | }
|
---|
617 | if (errno) warn2("can't read directory, want remove old logfile",
|
---|
618 | ld->name);
|
---|
619 | closedir(d);
|
---|
620 | errno = ENOSPC;
|
---|
621 | if (j > ld->nmin) {
|
---|
622 | if (*oldest == '@') {
|
---|
623 | bb_error_msg(WARNING"out of disk space, delete: %s/%s",
|
---|
624 | ld->name, oldest);
|
---|
625 | errno = 0;
|
---|
626 | if (unlink(oldest) == -1) {
|
---|
627 | warn2("can't unlink oldest logfile", ld->name);
|
---|
628 | errno = ENOSPC;
|
---|
629 | }
|
---|
630 | while (fchdir(fdwdir) == -1)
|
---|
631 | pause1cannot("change to initial working directory");
|
---|
632 | }
|
---|
633 | }
|
---|
634 | }
|
---|
635 | if (errno)
|
---|
636 | pause2cannot("write to current", ld->name);
|
---|
637 | }
|
---|
638 |
|
---|
639 | ld->size += i;
|
---|
640 | if (ld->sizemax)
|
---|
641 | if (s[i-1] == '\n')
|
---|
642 | if (ld->size >= (ld->sizemax - linemax))
|
---|
643 | rotate(ld);
|
---|
644 | return i;
|
---|
645 | }
|
---|
646 |
|
---|
647 | static void logdir_close(struct logdir *ld)
|
---|
648 | {
|
---|
649 | if (ld->fddir == -1)
|
---|
650 | return;
|
---|
651 | if (verbose)
|
---|
652 | bb_error_msg(INFO"close: %s", ld->name);
|
---|
653 | close(ld->fddir);
|
---|
654 | ld->fddir = -1;
|
---|
655 | if (ld->fdcur == -1)
|
---|
656 | return; /* impossible */
|
---|
657 | while (fflush(ld->filecur) || fsync(ld->fdcur) == -1)
|
---|
658 | pause2cannot("fsync current logfile", ld->name);
|
---|
659 | while (fchmod(ld->fdcur, 0744) == -1)
|
---|
660 | pause2cannot("set mode of current", ld->name);
|
---|
661 | ////close(ld->fdcur);
|
---|
662 | fclose(ld->filecur);
|
---|
663 | ld->fdcur = -1;
|
---|
664 | if (ld->fdlock == -1)
|
---|
665 | return; /* impossible */
|
---|
666 | close(ld->fdlock);
|
---|
667 | ld->fdlock = -1;
|
---|
668 | free(ld->processor);
|
---|
669 | ld->processor = NULL;
|
---|
670 | }
|
---|
671 |
|
---|
672 | static NOINLINE unsigned logdir_open(struct logdir *ld, const char *fn)
|
---|
673 | {
|
---|
674 | char buf[128];
|
---|
675 | unsigned now;
|
---|
676 | char *new, *s, *np;
|
---|
677 | int i;
|
---|
678 | struct stat st;
|
---|
679 |
|
---|
680 | now = monotonic_sec();
|
---|
681 |
|
---|
682 | ld->fddir = open(fn, O_RDONLY|O_NDELAY);
|
---|
683 | if (ld->fddir == -1) {
|
---|
684 | warn2("can't open log directory", (char*)fn);
|
---|
685 | return 0;
|
---|
686 | }
|
---|
687 | close_on_exec_on(ld->fddir);
|
---|
688 | if (fchdir(ld->fddir) == -1) {
|
---|
689 | logdir_close(ld);
|
---|
690 | warn2("can't change directory", (char*)fn);
|
---|
691 | return 0;
|
---|
692 | }
|
---|
693 | ld->fdlock = open("lock", O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600);
|
---|
694 | if ((ld->fdlock == -1)
|
---|
695 | || (flock(ld->fdlock, LOCK_EX | LOCK_NB) == -1)
|
---|
696 | ) {
|
---|
697 | logdir_close(ld);
|
---|
698 | warn2("can't lock directory", (char*)fn);
|
---|
699 | while (fchdir(fdwdir) == -1)
|
---|
700 | pause1cannot("change to initial working directory");
|
---|
701 | return 0;
|
---|
702 | }
|
---|
703 | close_on_exec_on(ld->fdlock);
|
---|
704 |
|
---|
705 | ld->size = 0;
|
---|
706 | ld->sizemax = 1000000;
|
---|
707 | ld->nmax = ld->nmin = 10;
|
---|
708 | ld->rotate_period = 0;
|
---|
709 | ld->name = (char*)fn;
|
---|
710 | ld->ppid = 0;
|
---|
711 | ld->match = '+';
|
---|
712 | free(ld->inst); ld->inst = NULL;
|
---|
713 | free(ld->processor); ld->processor = NULL;
|
---|
714 |
|
---|
715 | /* read config */
|
---|
716 | i = open_read_close("config", buf, sizeof(buf) - 1);
|
---|
717 | if (i < 0 && errno != ENOENT)
|
---|
718 | bb_perror_msg(WARNING"%s/config", ld->name);
|
---|
719 | if (i > 0) {
|
---|
720 | buf[i] = '\0';
|
---|
721 | if (verbose)
|
---|
722 | bb_error_msg(INFO"read: %s/config", ld->name);
|
---|
723 | s = buf;
|
---|
724 | while (s) {
|
---|
725 | np = strchr(s, '\n');
|
---|
726 | if (np)
|
---|
727 | *np++ = '\0';
|
---|
728 | switch (s[0]) {
|
---|
729 | case '+':
|
---|
730 | case '-':
|
---|
731 | case 'e':
|
---|
732 | case 'E':
|
---|
733 | /* Filtering requires one-line buffering,
|
---|
734 | * resetting the "find newline" function
|
---|
735 | * accordingly */
|
---|
736 | memRchr = memchr;
|
---|
737 | /* Add '\n'-terminated line to ld->inst */
|
---|
738 | while (1) {
|
---|
739 | int l = asprintf(&new, "%s%s\n", ld->inst ? ld->inst : "", s);
|
---|
740 | if (l >= 0 && new)
|
---|
741 | break;
|
---|
742 | pause_nomem();
|
---|
743 | }
|
---|
744 | free(ld->inst);
|
---|
745 | ld->inst = new;
|
---|
746 | break;
|
---|
747 | case 's': {
|
---|
748 | static const struct suffix_mult km_suffixes[] = {
|
---|
749 | { "k", 1024 },
|
---|
750 | { "m", 1024*1024 },
|
---|
751 | { "", 0 }
|
---|
752 | };
|
---|
753 | ld->sizemax = xatou_sfx(&s[1], km_suffixes);
|
---|
754 | break;
|
---|
755 | }
|
---|
756 | case 'n':
|
---|
757 | ld->nmax = xatoi_positive(&s[1]);
|
---|
758 | break;
|
---|
759 | case 'N':
|
---|
760 | ld->nmin = xatoi_positive(&s[1]);
|
---|
761 | break;
|
---|
762 | case 't': {
|
---|
763 | static const struct suffix_mult mh_suffixes[] = {
|
---|
764 | { "m", 60 },
|
---|
765 | { "h", 60*60 },
|
---|
766 | /*{ "d", 24*60*60 },*/
|
---|
767 | { "", 0 }
|
---|
768 | };
|
---|
769 | ld->rotate_period = xatou_sfx(&s[1], mh_suffixes);
|
---|
770 | if (ld->rotate_period) {
|
---|
771 | ld->next_rotate = now + ld->rotate_period;
|
---|
772 | if (!tmaxflag || LESS(ld->next_rotate, nearest_rotate))
|
---|
773 | nearest_rotate = ld->next_rotate;
|
---|
774 | tmaxflag = 1;
|
---|
775 | }
|
---|
776 | break;
|
---|
777 | }
|
---|
778 | case '!':
|
---|
779 | if (s[1]) {
|
---|
780 | free(ld->processor);
|
---|
781 | ld->processor = wstrdup(s);
|
---|
782 | }
|
---|
783 | break;
|
---|
784 | }
|
---|
785 | s = np;
|
---|
786 | }
|
---|
787 | /* Convert "aa\nbb\ncc\n\0" to "aa\0bb\0cc\0\0" */
|
---|
788 | s = ld->inst;
|
---|
789 | while (s) {
|
---|
790 | np = strchr(s, '\n');
|
---|
791 | if (np)
|
---|
792 | *np++ = '\0';
|
---|
793 | s = np;
|
---|
794 | }
|
---|
795 | }
|
---|
796 |
|
---|
797 | /* open current */
|
---|
798 | i = stat("current", &st);
|
---|
799 | if (i != -1) {
|
---|
800 | if (st.st_size && !(st.st_mode & S_IXUSR)) {
|
---|
801 | ld->fnsave[25] = '.';
|
---|
802 | ld->fnsave[26] = 'u';
|
---|
803 | ld->fnsave[27] = '\0';
|
---|
804 | do {
|
---|
805 | fmt_time_bernstein_25(ld->fnsave);
|
---|
806 | errno = 0;
|
---|
807 | stat(ld->fnsave, &st);
|
---|
808 | } while (errno != ENOENT);
|
---|
809 | while (rename("current", ld->fnsave) == -1)
|
---|
810 | pause2cannot("rename current", ld->name);
|
---|
811 | rmoldest(ld);
|
---|
812 | i = -1;
|
---|
813 | } else {
|
---|
814 | /* st.st_size can be not just bigger, but WIDER!
|
---|
815 | * This code is safe: if st.st_size > 4GB, we select
|
---|
816 | * ld->sizemax (because it's "unsigned") */
|
---|
817 | ld->size = (st.st_size > ld->sizemax) ? ld->sizemax : st.st_size;
|
---|
818 | }
|
---|
819 | } else {
|
---|
820 | if (errno != ENOENT) {
|
---|
821 | logdir_close(ld);
|
---|
822 | warn2("can't stat current", ld->name);
|
---|
823 | while (fchdir(fdwdir) == -1)
|
---|
824 | pause1cannot("change to initial working directory");
|
---|
825 | return 0;
|
---|
826 | }
|
---|
827 | }
|
---|
828 | while ((ld->fdcur = open("current", O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600)) == -1)
|
---|
829 | pause2cannot("open current", ld->name);
|
---|
830 | while ((ld->filecur = fdopen(ld->fdcur, "a")) == NULL)
|
---|
831 | pause2cannot("open current", ld->name); ////
|
---|
832 | setvbuf(ld->filecur, NULL, _IOFBF, linelen); ////
|
---|
833 |
|
---|
834 | close_on_exec_on(ld->fdcur);
|
---|
835 | while (fchmod(ld->fdcur, 0644) == -1)
|
---|
836 | pause2cannot("set mode of current", ld->name);
|
---|
837 |
|
---|
838 | if (verbose) {
|
---|
839 | if (i == 0) bb_error_msg(INFO"append: %s/current", ld->name);
|
---|
840 | else bb_error_msg(INFO"new: %s/current", ld->name);
|
---|
841 | }
|
---|
842 |
|
---|
843 | while (fchdir(fdwdir) == -1)
|
---|
844 | pause1cannot("change to initial working directory");
|
---|
845 | return 1;
|
---|
846 | }
|
---|
847 |
|
---|
848 | static void logdirs_reopen(void)
|
---|
849 | {
|
---|
850 | int l;
|
---|
851 | int ok = 0;
|
---|
852 |
|
---|
853 | tmaxflag = 0;
|
---|
854 | for (l = 0; l < dirn; ++l) {
|
---|
855 | logdir_close(&dir[l]);
|
---|
856 | if (logdir_open(&dir[l], fndir[l]))
|
---|
857 | ok = 1;
|
---|
858 | }
|
---|
859 | if (!ok)
|
---|
860 | fatalx("no functional log directories");
|
---|
861 | }
|
---|
862 |
|
---|
863 | /* Will look good in libbb one day */
|
---|
864 | static ssize_t ndelay_read(int fd, void *buf, size_t count)
|
---|
865 | {
|
---|
866 | if (!(fl_flag_0 & O_NONBLOCK))
|
---|
867 | fcntl(fd, F_SETFL, fl_flag_0 | O_NONBLOCK);
|
---|
868 | count = safe_read(fd, buf, count);
|
---|
869 | if (!(fl_flag_0 & O_NONBLOCK))
|
---|
870 | fcntl(fd, F_SETFL, fl_flag_0);
|
---|
871 | return count;
|
---|
872 | }
|
---|
873 |
|
---|
874 | /* Used for reading stdin */
|
---|
875 | static int buffer_pread(/*int fd, */char *s, unsigned len)
|
---|
876 | {
|
---|
877 | unsigned now;
|
---|
878 | struct pollfd input;
|
---|
879 | int i;
|
---|
880 |
|
---|
881 | input.fd = STDIN_FILENO;
|
---|
882 | input.events = POLLIN;
|
---|
883 |
|
---|
884 | do {
|
---|
885 | if (rotateasap) {
|
---|
886 | for (i = 0; i < dirn; ++i)
|
---|
887 | rotate(dir + i);
|
---|
888 | rotateasap = 0;
|
---|
889 | }
|
---|
890 | if (exitasap) {
|
---|
891 | if (linecomplete)
|
---|
892 | return 0;
|
---|
893 | len = 1;
|
---|
894 | }
|
---|
895 | if (reopenasap) {
|
---|
896 | logdirs_reopen();
|
---|
897 | reopenasap = 0;
|
---|
898 | }
|
---|
899 | now = monotonic_sec();
|
---|
900 | nearest_rotate = now + (45 * 60 + 45);
|
---|
901 | for (i = 0; i < dirn; ++i) {
|
---|
902 | if (dir[i].rotate_period) {
|
---|
903 | if (LESS(dir[i].next_rotate, now))
|
---|
904 | rotate(dir + i);
|
---|
905 | if (LESS(dir[i].next_rotate, nearest_rotate))
|
---|
906 | nearest_rotate = dir[i].next_rotate;
|
---|
907 | }
|
---|
908 | }
|
---|
909 |
|
---|
910 | sigprocmask(SIG_UNBLOCK, &blocked_sigset, NULL);
|
---|
911 | i = nearest_rotate - now;
|
---|
912 | if (i > 1000000)
|
---|
913 | i = 1000000;
|
---|
914 | if (i <= 0)
|
---|
915 | i = 1;
|
---|
916 | poll(&input, 1, i * 1000);
|
---|
917 | sigprocmask(SIG_BLOCK, &blocked_sigset, NULL);
|
---|
918 |
|
---|
919 | i = ndelay_read(STDIN_FILENO, s, len);
|
---|
920 | if (i >= 0)
|
---|
921 | break;
|
---|
922 | if (errno == EINTR)
|
---|
923 | continue;
|
---|
924 | if (errno != EAGAIN) {
|
---|
925 | warn("can't read standard input");
|
---|
926 | break;
|
---|
927 | }
|
---|
928 | /* else: EAGAIN - normal, repeat silently */
|
---|
929 | } while (!exitasap);
|
---|
930 |
|
---|
931 | if (i > 0) {
|
---|
932 | int cnt;
|
---|
933 | linecomplete = (s[i-1] == '\n');
|
---|
934 | if (!repl)
|
---|
935 | return i;
|
---|
936 |
|
---|
937 | cnt = i;
|
---|
938 | while (--cnt >= 0) {
|
---|
939 | char ch = *s;
|
---|
940 | if (ch != '\n') {
|
---|
941 | if (ch < 32 || ch > 126)
|
---|
942 | *s = repl;
|
---|
943 | else {
|
---|
944 | int j;
|
---|
945 | for (j = 0; replace[j]; ++j) {
|
---|
946 | if (ch == replace[j]) {
|
---|
947 | *s = repl;
|
---|
948 | break;
|
---|
949 | }
|
---|
950 | }
|
---|
951 | }
|
---|
952 | }
|
---|
953 | s++;
|
---|
954 | }
|
---|
955 | }
|
---|
956 | return i;
|
---|
957 | }
|
---|
958 |
|
---|
959 | static void sig_term_handler(int sig_no UNUSED_PARAM)
|
---|
960 | {
|
---|
961 | if (verbose)
|
---|
962 | bb_error_msg(INFO"sig%s received", "term");
|
---|
963 | exitasap = 1;
|
---|
964 | }
|
---|
965 |
|
---|
966 | static void sig_child_handler(int sig_no UNUSED_PARAM)
|
---|
967 | {
|
---|
968 | pid_t pid;
|
---|
969 | int l;
|
---|
970 |
|
---|
971 | if (verbose)
|
---|
972 | bb_error_msg(INFO"sig%s received", "child");
|
---|
973 | while ((pid = wait_any_nohang(&wstat)) > 0) {
|
---|
974 | for (l = 0; l < dirn; ++l) {
|
---|
975 | if (dir[l].ppid == pid) {
|
---|
976 | dir[l].ppid = 0;
|
---|
977 | processorstop(&dir[l]);
|
---|
978 | break;
|
---|
979 | }
|
---|
980 | }
|
---|
981 | }
|
---|
982 | }
|
---|
983 |
|
---|
984 | static void sig_alarm_handler(int sig_no UNUSED_PARAM)
|
---|
985 | {
|
---|
986 | if (verbose)
|
---|
987 | bb_error_msg(INFO"sig%s received", "alarm");
|
---|
988 | rotateasap = 1;
|
---|
989 | }
|
---|
990 |
|
---|
991 | static void sig_hangup_handler(int sig_no UNUSED_PARAM)
|
---|
992 | {
|
---|
993 | if (verbose)
|
---|
994 | bb_error_msg(INFO"sig%s received", "hangup");
|
---|
995 | reopenasap = 1;
|
---|
996 | }
|
---|
997 |
|
---|
998 | static void logmatch(struct logdir *ld)
|
---|
999 | {
|
---|
1000 | char *s;
|
---|
1001 |
|
---|
1002 | ld->match = '+';
|
---|
1003 | ld->matcherr = 'E';
|
---|
1004 | s = ld->inst;
|
---|
1005 | while (s && s[0]) {
|
---|
1006 | switch (s[0]) {
|
---|
1007 | case '+':
|
---|
1008 | case '-':
|
---|
1009 | if (pmatch(s+1, line, linelen))
|
---|
1010 | ld->match = s[0];
|
---|
1011 | break;
|
---|
1012 | case 'e':
|
---|
1013 | case 'E':
|
---|
1014 | if (pmatch(s+1, line, linelen))
|
---|
1015 | ld->matcherr = s[0];
|
---|
1016 | break;
|
---|
1017 | }
|
---|
1018 | s += strlen(s) + 1;
|
---|
1019 | }
|
---|
1020 | }
|
---|
1021 |
|
---|
1022 | int svlogd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
1023 | int svlogd_main(int argc, char **argv)
|
---|
1024 | {
|
---|
1025 | char *r, *l, *b;
|
---|
1026 | ssize_t stdin_cnt = 0;
|
---|
1027 | int i;
|
---|
1028 | unsigned opt;
|
---|
1029 | unsigned timestamp = 0;
|
---|
1030 |
|
---|
1031 | INIT_G();
|
---|
1032 |
|
---|
1033 | opt_complementary = "tt:vv";
|
---|
1034 | opt = getopt32(argv, "r:R:l:b:tv",
|
---|
1035 | &r, &replace, &l, &b, ×tamp, &verbose);
|
---|
1036 | if (opt & 1) { // -r
|
---|
1037 | repl = r[0];
|
---|
1038 | if (!repl || r[1])
|
---|
1039 | bb_show_usage();
|
---|
1040 | }
|
---|
1041 | if (opt & 2) if (!repl) repl = '_'; // -R
|
---|
1042 | if (opt & 4) { // -l
|
---|
1043 | linemax = xatou_range(l, 0, BUFSIZ-26);
|
---|
1044 | if (linemax == 0)
|
---|
1045 | linemax = BUFSIZ-26;
|
---|
1046 | if (linemax < 256)
|
---|
1047 | linemax = 256;
|
---|
1048 | }
|
---|
1049 | ////if (opt & 8) { // -b
|
---|
1050 | //// buflen = xatoi_positive(b);
|
---|
1051 | //// if (buflen == 0) buflen = 1024;
|
---|
1052 | ////}
|
---|
1053 | //if (opt & 0x10) timestamp++; // -t
|
---|
1054 | //if (opt & 0x20) verbose++; // -v
|
---|
1055 | //if (timestamp > 2) timestamp = 2;
|
---|
1056 | argv += optind;
|
---|
1057 | argc -= optind;
|
---|
1058 |
|
---|
1059 | dirn = argc;
|
---|
1060 | if (dirn <= 0)
|
---|
1061 | bb_show_usage();
|
---|
1062 | ////if (buflen <= linemax) bb_show_usage();
|
---|
1063 | fdwdir = xopen(".", O_RDONLY|O_NDELAY);
|
---|
1064 | close_on_exec_on(fdwdir);
|
---|
1065 | dir = xzalloc(dirn * sizeof(dir[0]));
|
---|
1066 | for (i = 0; i < dirn; ++i) {
|
---|
1067 | dir[i].fddir = -1;
|
---|
1068 | dir[i].fdcur = -1;
|
---|
1069 | ////dir[i].btmp = xmalloc(buflen);
|
---|
1070 | /*dir[i].ppid = 0;*/
|
---|
1071 | }
|
---|
1072 | /* line = xmalloc(linemax + (timestamp ? 26 : 0)); */
|
---|
1073 | fndir = argv;
|
---|
1074 | /* We cannot set NONBLOCK on fd #0 permanently - this setting
|
---|
1075 | * _isn't_ per-process! It is shared among all other processes
|
---|
1076 | * with the same stdin */
|
---|
1077 | fl_flag_0 = fcntl(0, F_GETFL);
|
---|
1078 |
|
---|
1079 | sigemptyset(&blocked_sigset);
|
---|
1080 | sigaddset(&blocked_sigset, SIGTERM);
|
---|
1081 | sigaddset(&blocked_sigset, SIGCHLD);
|
---|
1082 | sigaddset(&blocked_sigset, SIGALRM);
|
---|
1083 | sigaddset(&blocked_sigset, SIGHUP);
|
---|
1084 | sigprocmask(SIG_BLOCK, &blocked_sigset, NULL);
|
---|
1085 | bb_signals_recursive_norestart(1 << SIGTERM, sig_term_handler);
|
---|
1086 | bb_signals_recursive_norestart(1 << SIGCHLD, sig_child_handler);
|
---|
1087 | bb_signals_recursive_norestart(1 << SIGALRM, sig_alarm_handler);
|
---|
1088 | bb_signals_recursive_norestart(1 << SIGHUP, sig_hangup_handler);
|
---|
1089 |
|
---|
1090 | /* Without timestamps, we don't have to print each line
|
---|
1091 | * separately, so we can look for _last_ newline, not first,
|
---|
1092 | * thus batching writes. If filtering is enabled in config,
|
---|
1093 | * logdirs_reopen resets it to memchr.
|
---|
1094 | */
|
---|
1095 | memRchr = (timestamp ? memchr : memrchr);
|
---|
1096 |
|
---|
1097 | logdirs_reopen();
|
---|
1098 |
|
---|
1099 | setvbuf(stderr, NULL, _IOFBF, linelen);
|
---|
1100 |
|
---|
1101 | /* Each iteration processes one or more lines */
|
---|
1102 | while (1) {
|
---|
1103 | char stamp[FMT_PTIME];
|
---|
1104 | char *lineptr;
|
---|
1105 | char *printptr;
|
---|
1106 | char *np;
|
---|
1107 | int printlen;
|
---|
1108 | char ch;
|
---|
1109 |
|
---|
1110 | lineptr = line;
|
---|
1111 | if (timestamp)
|
---|
1112 | lineptr += 26;
|
---|
1113 |
|
---|
1114 | /* lineptr[0..linemax-1] - buffer for stdin */
|
---|
1115 | /* (possibly has some unprocessed data from prev loop) */
|
---|
1116 |
|
---|
1117 | /* Refill the buffer if needed */
|
---|
1118 | np = memRchr(lineptr, '\n', stdin_cnt);
|
---|
1119 | if (!np && !exitasap) {
|
---|
1120 | i = linemax - stdin_cnt; /* avail. bytes at tail */
|
---|
1121 | if (i >= 128) {
|
---|
1122 | i = buffer_pread(/*0, */lineptr + stdin_cnt, i);
|
---|
1123 | if (i <= 0) /* EOF or error on stdin */
|
---|
1124 | exitasap = 1;
|
---|
1125 | else {
|
---|
1126 | np = memRchr(lineptr + stdin_cnt, '\n', i);
|
---|
1127 | stdin_cnt += i;
|
---|
1128 | }
|
---|
1129 | }
|
---|
1130 | }
|
---|
1131 | if (stdin_cnt <= 0 && exitasap)
|
---|
1132 | break;
|
---|
1133 |
|
---|
1134 | /* Search for '\n' (in fact, np already holds the result) */
|
---|
1135 | linelen = stdin_cnt;
|
---|
1136 | if (np) {
|
---|
1137 | print_to_nl:
|
---|
1138 | /* NB: starting from here lineptr may point
|
---|
1139 | * farther out into line[] */
|
---|
1140 | linelen = np - lineptr + 1;
|
---|
1141 | }
|
---|
1142 | /* linelen == no of chars incl. '\n' (or == stdin_cnt) */
|
---|
1143 | ch = lineptr[linelen-1];
|
---|
1144 |
|
---|
1145 | /* Biggest performance hit was coming from the fact
|
---|
1146 | * that we did not buffer writes. We were reading many lines
|
---|
1147 | * in one read() above, but wrote one line per write().
|
---|
1148 | * We are using stdio to fix that */
|
---|
1149 |
|
---|
1150 | /* write out lineptr[0..linelen-1] to each log destination
|
---|
1151 | * (or lineptr[-26..linelen-1] if timestamping) */
|
---|
1152 | printlen = linelen;
|
---|
1153 | printptr = lineptr;
|
---|
1154 | if (timestamp) {
|
---|
1155 | if (timestamp == 1)
|
---|
1156 | fmt_time_bernstein_25(stamp);
|
---|
1157 | else /* 2: */
|
---|
1158 | fmt_time_human_30nul(stamp);
|
---|
1159 | printlen += 26;
|
---|
1160 | printptr -= 26;
|
---|
1161 | memcpy(printptr, stamp, 25);
|
---|
1162 | printptr[25] = ' ';
|
---|
1163 | }
|
---|
1164 | for (i = 0; i < dirn; ++i) {
|
---|
1165 | struct logdir *ld = &dir[i];
|
---|
1166 | if (ld->fddir == -1)
|
---|
1167 | continue;
|
---|
1168 | if (ld->inst)
|
---|
1169 | logmatch(ld);
|
---|
1170 | if (ld->matcherr == 'e') {
|
---|
1171 | /* runit-1.8.0 compat: if timestamping, do it on stderr too */
|
---|
1172 | ////full_write(STDERR_FILENO, printptr, printlen);
|
---|
1173 | fwrite(printptr, 1, printlen, stderr);
|
---|
1174 | }
|
---|
1175 | if (ld->match != '+')
|
---|
1176 | continue;
|
---|
1177 | buffer_pwrite(i, printptr, printlen);
|
---|
1178 | }
|
---|
1179 |
|
---|
1180 | /* If we didn't see '\n' (long input line), */
|
---|
1181 | /* read/write repeatedly until we see it */
|
---|
1182 | while (ch != '\n') {
|
---|
1183 | /* lineptr is emptied now, safe to use as buffer */
|
---|
1184 | stdin_cnt = exitasap ? -1 : buffer_pread(/*0, */lineptr, linemax);
|
---|
1185 | if (stdin_cnt <= 0) { /* EOF or error on stdin */
|
---|
1186 | exitasap = 1;
|
---|
1187 | lineptr[0] = ch = '\n';
|
---|
1188 | linelen = 1;
|
---|
1189 | stdin_cnt = 1;
|
---|
1190 | } else {
|
---|
1191 | linelen = stdin_cnt;
|
---|
1192 | np = memRchr(lineptr, '\n', stdin_cnt);
|
---|
1193 | if (np)
|
---|
1194 | linelen = np - lineptr + 1;
|
---|
1195 | ch = lineptr[linelen-1];
|
---|
1196 | }
|
---|
1197 | /* linelen == no of chars incl. '\n' (or == stdin_cnt) */
|
---|
1198 | for (i = 0; i < dirn; ++i) {
|
---|
1199 | if (dir[i].fddir == -1)
|
---|
1200 | continue;
|
---|
1201 | if (dir[i].matcherr == 'e') {
|
---|
1202 | ////full_write(STDERR_FILENO, lineptr, linelen);
|
---|
1203 | fwrite(lineptr, 1, linelen, stderr);
|
---|
1204 | }
|
---|
1205 | if (dir[i].match != '+')
|
---|
1206 | continue;
|
---|
1207 | buffer_pwrite(i, lineptr, linelen);
|
---|
1208 | }
|
---|
1209 | }
|
---|
1210 |
|
---|
1211 | stdin_cnt -= linelen;
|
---|
1212 | if (stdin_cnt > 0) {
|
---|
1213 | lineptr += linelen;
|
---|
1214 | /* If we see another '\n', we don't need to read
|
---|
1215 | * next piece of input: can print what we have */
|
---|
1216 | np = memRchr(lineptr, '\n', stdin_cnt);
|
---|
1217 | if (np)
|
---|
1218 | goto print_to_nl;
|
---|
1219 | /* Move unprocessed data to the front of line */
|
---|
1220 | memmove((timestamp ? line+26 : line), lineptr, stdin_cnt);
|
---|
1221 | }
|
---|
1222 | fflush_all();////
|
---|
1223 | }
|
---|
1224 |
|
---|
1225 | for (i = 0; i < dirn; ++i) {
|
---|
1226 | if (dir[i].ppid)
|
---|
1227 | while (!processorstop(&dir[i]))
|
---|
1228 | continue;
|
---|
1229 | logdir_close(&dir[i]);
|
---|
1230 | }
|
---|
1231 | return 0;
|
---|
1232 | }
|
---|