[3320] | 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 | #include <sys/poll.h>
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| 129 | #include <sys/file.h>
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| 130 | #include "libbb.h"
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| 131 | #include "runit_lib.h"
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| 132 |
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| 133 | #define LESS(a,b) ((int)((unsigned)(b) - (unsigned)(a)) > 0)
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| 134 |
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| 135 | #define FMT_PTIME 30
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| 136 |
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| 137 | struct logdir {
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| 138 | ////char *btmp;
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| 139 | /* pattern list to match, in "aa\0bb\0\cc\0\0" form */
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| 140 | char *inst;
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| 141 | char *processor;
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| 142 | char *name;
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| 143 | unsigned size;
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| 144 | unsigned sizemax;
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| 145 | unsigned nmax;
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| 146 | unsigned nmin;
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| 147 | unsigned rotate_period;
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| 148 | int ppid;
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| 149 | int fddir;
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| 150 | int fdcur;
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| 151 | FILE* filecur; ////
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| 152 | int fdlock;
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| 153 | unsigned next_rotate;
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| 154 | char fnsave[FMT_PTIME];
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| 155 | char match;
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| 156 | char matcherr;
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| 157 | };
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| 158 |
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| 159 |
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| 160 | struct globals {
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| 161 | struct logdir *dir;
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| 162 | unsigned verbose;
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| 163 | int linemax;
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| 164 | ////int buflen;
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| 165 | int linelen;
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| 166 |
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| 167 | int fdwdir;
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| 168 | char **fndir;
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| 169 | int wstat;
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| 170 | unsigned nearest_rotate;
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| 171 |
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| 172 | void* (*memRchr)(const void *, int, size_t);
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| 173 |
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| 174 | smallint exitasap;
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| 175 | smallint rotateasap;
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| 176 | smallint reopenasap;
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| 177 | smallint linecomplete;
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| 178 | smallint tmaxflag;
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| 179 |
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| 180 | char repl;
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| 181 | const char *replace;
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| 182 | int fl_flag_0;
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| 183 | unsigned dirn;
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| 184 |
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| 185 | sigset_t blocked_sigset;
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| 186 | };
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| 187 | #define G (*ptr_to_globals)
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| 188 | #define dir (G.dir )
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| 189 | #define verbose (G.verbose )
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| 190 | #define linemax (G.linemax )
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| 191 | #define buflen (G.buflen )
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| 192 | #define linelen (G.linelen )
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| 193 | #define fndir (G.fndir )
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| 194 | #define fdwdir (G.fdwdir )
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| 195 | #define wstat (G.wstat )
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| 196 | #define memRchr (G.memRchr )
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| 197 | #define nearest_rotate (G.nearest_rotate)
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| 198 | #define exitasap (G.exitasap )
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| 199 | #define rotateasap (G.rotateasap )
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| 200 | #define reopenasap (G.reopenasap )
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| 201 | #define linecomplete (G.linecomplete )
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| 202 | #define tmaxflag (G.tmaxflag )
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| 203 | #define repl (G.repl )
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| 204 | #define replace (G.replace )
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| 205 | #define blocked_sigset (G.blocked_sigset)
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| 206 | #define fl_flag_0 (G.fl_flag_0 )
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| 207 | #define dirn (G.dirn )
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| 208 | #define INIT_G() do { \
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| 209 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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| 210 | linemax = 1000; \
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| 211 | /*buflen = 1024;*/ \
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| 212 | linecomplete = 1; \
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| 213 | replace = ""; \
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| 214 | } while (0)
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| 215 |
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| 216 | #define line bb_common_bufsiz1
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| 217 |
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| 218 |
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| 219 | #define FATAL "fatal: "
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| 220 | #define WARNING "warning: "
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| 221 | #define PAUSE "pausing: "
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| 222 | #define INFO "info: "
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| 223 |
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| 224 | static void fatalx(const char *m0)
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| 225 | {
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| 226 | bb_error_msg_and_die(FATAL"%s", m0);
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| 227 | }
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| 228 | static void warn(const char *m0)
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| 229 | {
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| 230 | bb_perror_msg(WARNING"%s", m0);
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| 231 | }
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| 232 | static void warn2(const char *m0, const char *m1)
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| 233 | {
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| 234 | bb_perror_msg(WARNING"%s: %s", m0, m1);
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| 235 | }
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| 236 | static void warnx(const char *m0, const char *m1)
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| 237 | {
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| 238 | bb_error_msg(WARNING"%s: %s", m0, m1);
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| 239 | }
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| 240 | static void pause_nomem(void)
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| 241 | {
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| 242 | bb_error_msg(PAUSE"out of memory");
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| 243 | sleep(3);
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| 244 | }
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| 245 | static void pause1cannot(const char *m0)
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| 246 | {
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| 247 | bb_perror_msg(PAUSE"can't %s", m0);
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| 248 | sleep(3);
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| 249 | }
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| 250 | static void pause2cannot(const char *m0, const char *m1)
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| 251 | {
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| 252 | bb_perror_msg(PAUSE"can't %s %s", m0, m1);
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| 253 | sleep(3);
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| 254 | }
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| 255 |
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| 256 | static char* wstrdup(const char *str)
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| 257 | {
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| 258 | char *s;
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| 259 | while (!(s = strdup(str)))
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| 260 | pause_nomem();
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| 261 | return s;
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| 262 | }
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| 263 |
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| 264 | static unsigned pmatch(const char *p, const char *s, unsigned len)
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| 265 | {
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| 266 | for (;;) {
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| 267 | char c = *p++;
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| 268 | if (!c) return !len;
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| 269 | switch (c) {
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| 270 | case '*':
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| 271 | c = *p;
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| 272 | if (!c) return 1;
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| 273 | for (;;) {
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| 274 | if (!len) return 0;
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| 275 | if (*s == c) break;
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| 276 | ++s;
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| 277 | --len;
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| 278 | }
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| 279 | continue;
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| 280 | case '+':
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| 281 | c = *p++;
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| 282 | if (c != *s) return 0;
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| 283 | for (;;) {
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| 284 | if (!len) return 1;
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| 285 | if (*s != c) break;
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| 286 | ++s;
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| 287 | --len;
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| 288 | }
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| 289 | continue;
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| 290 | /*
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| 291 | case '?':
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| 292 | if (*p == '?') {
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| 293 | if (*s != '?') return 0;
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| 294 | ++p;
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| 295 | }
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| 296 | ++s; --len;
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| 297 | continue;
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| 298 | */
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| 299 | default:
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| 300 | if (!len) return 0;
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| 301 | if (*s != c) return 0;
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| 302 | ++s;
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| 303 | --len;
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| 304 | continue;
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| 305 | }
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| 306 | }
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| 307 | return 0;
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| 308 | }
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| 309 |
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| 310 | /*** ex fmt_ptime.[ch] ***/
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| 311 |
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| 312 | /* NUL terminated */
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| 313 | static void fmt_time_human_30nul(char *s)
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| 314 | {
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| 315 | struct tm *ptm;
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| 316 | struct timeval tv;
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| 317 |
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| 318 | gettimeofday(&tv, NULL);
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| 319 | ptm = gmtime(&tv.tv_sec);
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| 320 | sprintf(s, "%04u-%02u-%02u_%02u:%02u:%02u.%06u000",
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| 321 | (unsigned)(1900 + ptm->tm_year),
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| 322 | (unsigned)(ptm->tm_mon + 1),
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| 323 | (unsigned)(ptm->tm_mday),
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| 324 | (unsigned)(ptm->tm_hour),
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| 325 | (unsigned)(ptm->tm_min),
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| 326 | (unsigned)(ptm->tm_sec),
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| 327 | (unsigned)(tv.tv_usec)
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| 328 | );
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| 329 | /* 4+1 + 2+1 + 2+1 + 2+1 + 2+1 + 2+1 + 9 = */
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| 330 | /* 5 + 3 + 3 + 3 + 3 + 3 + 9 = */
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| 331 | /* 20 (up to '.' inclusive) + 9 (not including '\0') */
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| 332 | }
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| 333 |
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| 334 | /* NOT terminated! */
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| 335 | static void fmt_time_bernstein_25(char *s)
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| 336 | {
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| 337 | uint32_t pack[3];
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| 338 | struct timeval tv;
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| 339 | unsigned sec_hi;
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| 340 |
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| 341 | gettimeofday(&tv, NULL);
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| 342 | sec_hi = (0x400000000000000aULL + tv.tv_sec) >> 32;
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| 343 | tv.tv_sec = (time_t)(0x400000000000000aULL) + tv.tv_sec;
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| 344 | tv.tv_usec *= 1000;
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| 345 | /* Network order is big-endian: most significant byte first.
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| 346 | * This is exactly what we want here */
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| 347 | pack[0] = htonl(sec_hi);
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| 348 | pack[1] = htonl(tv.tv_sec);
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| 349 | pack[2] = htonl(tv.tv_usec);
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| 350 | *s++ = '@';
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| 351 | bin2hex(s, (char*)pack, 12);
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| 352 | }
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| 353 |
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| 354 | static void processorstart(struct logdir *ld)
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| 355 | {
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| 356 | char sv_ch;
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| 357 | int pid;
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| 358 |
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| 359 | if (!ld->processor) return;
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| 360 | if (ld->ppid) {
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| 361 | warnx("processor already running", ld->name);
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| 362 | return;
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| 363 | }
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| 364 |
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| 365 | /* vfork'ed child trashes this byte, save... */
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| 366 | sv_ch = ld->fnsave[26];
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| 367 |
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| 368 | while ((pid = vfork()) == -1)
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| 369 | pause2cannot("vfork for processor", ld->name);
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| 370 | if (!pid) {
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| 371 | int fd;
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| 372 |
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| 373 | /* child */
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| 374 | /* Non-ignored signals revert to SIG_DFL on exec anyway */
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| 375 | /*bb_signals(0
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| 376 | + (1 << SIGTERM)
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| 377 | + (1 << SIGALRM)
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| 378 | + (1 << SIGHUP)
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| 379 | , SIG_DFL);*/
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| 380 | sig_unblock(SIGTERM);
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| 381 | sig_unblock(SIGALRM);
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| 382 | sig_unblock(SIGHUP);
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| 383 |
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| 384 | if (verbose)
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| 385 | bb_error_msg(INFO"processing: %s/%s", ld->name, ld->fnsave);
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| 386 | fd = xopen(ld->fnsave, O_RDONLY|O_NDELAY);
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| 387 | xmove_fd(fd, 0);
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| 388 | ld->fnsave[26] = 't'; /* <- that's why we need sv_ch! */
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| 389 | fd = xopen(ld->fnsave, O_WRONLY|O_NDELAY|O_TRUNC|O_CREAT);
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| 390 | xmove_fd(fd, 1);
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| 391 | fd = open("state", O_RDONLY|O_NDELAY);
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| 392 | if (fd == -1) {
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| 393 | if (errno != ENOENT)
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| 394 | bb_perror_msg_and_die(FATAL"can't %s processor %s", "open state for", ld->name);
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| 395 | close(xopen("state", O_WRONLY|O_NDELAY|O_TRUNC|O_CREAT));
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| 396 | fd = xopen("state", O_RDONLY|O_NDELAY);
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| 397 | }
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| 398 | xmove_fd(fd, 4);
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| 399 | fd = xopen("newstate", O_WRONLY|O_NDELAY|O_TRUNC|O_CREAT);
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| 400 | xmove_fd(fd, 5);
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| 401 |
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| 402 | // getenv("SHELL")?
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| 403 | execl(DEFAULT_SHELL, DEFAULT_SHELL_SHORT_NAME, "-c", ld->processor, (char*) NULL);
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| 404 | bb_perror_msg_and_die(FATAL"can't %s processor %s", "run", ld->name);
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| 405 | }
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| 406 | ld->fnsave[26] = sv_ch; /* ...restore */
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| 407 | ld->ppid = pid;
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| 408 | }
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| 409 |
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| 410 | static unsigned processorstop(struct logdir *ld)
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| 411 | {
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| 412 | char f[28];
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| 413 |
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| 414 | if (ld->ppid) {
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| 415 | sig_unblock(SIGHUP);
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| 416 | while (safe_waitpid(ld->ppid, &wstat, 0) == -1)
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| 417 | pause2cannot("wait for processor", ld->name);
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| 418 | sig_block(SIGHUP);
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| 419 | ld->ppid = 0;
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| 420 | }
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| 421 | if (ld->fddir == -1)
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| 422 | return 1;
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| 423 | while (fchdir(ld->fddir) == -1)
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| 424 | pause2cannot("change directory, want processor", ld->name);
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| 425 | if (WEXITSTATUS(wstat) != 0) {
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| 426 | warnx("processor failed, restart", ld->name);
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| 427 | ld->fnsave[26] = 't';
|
---|
| 428 | unlink(ld->fnsave);
|
---|
| 429 | ld->fnsave[26] = 'u';
|
---|
| 430 | processorstart(ld);
|
---|
| 431 | while (fchdir(fdwdir) == -1)
|
---|
| 432 | pause1cannot("change to initial working directory");
|
---|
| 433 | return ld->processor ? 0 : 1;
|
---|
| 434 | }
|
---|
| 435 | ld->fnsave[26] = 't';
|
---|
| 436 | memcpy(f, ld->fnsave, 26);
|
---|
| 437 | f[26] = 's';
|
---|
| 438 | f[27] = '\0';
|
---|
| 439 | while (rename(ld->fnsave, f) == -1)
|
---|
| 440 | pause2cannot("rename processed", ld->name);
|
---|
| 441 | while (chmod(f, 0744) == -1)
|
---|
| 442 | pause2cannot("set mode of processed", ld->name);
|
---|
| 443 | ld->fnsave[26] = 'u';
|
---|
| 444 | if (unlink(ld->fnsave) == -1)
|
---|
| 445 | bb_error_msg(WARNING"can't unlink: %s/%s", ld->name, ld->fnsave);
|
---|
| 446 | while (rename("newstate", "state") == -1)
|
---|
| 447 | pause2cannot("rename state", ld->name);
|
---|
| 448 | if (verbose)
|
---|
| 449 | bb_error_msg(INFO"processed: %s/%s", ld->name, f);
|
---|
| 450 | while (fchdir(fdwdir) == -1)
|
---|
| 451 | pause1cannot("change to initial working directory");
|
---|
| 452 | return 1;
|
---|
| 453 | }
|
---|
| 454 |
|
---|
| 455 | static void rmoldest(struct logdir *ld)
|
---|
| 456 | {
|
---|
| 457 | DIR *d;
|
---|
| 458 | struct dirent *f;
|
---|
| 459 | char oldest[FMT_PTIME];
|
---|
| 460 | int n = 0;
|
---|
| 461 |
|
---|
| 462 | oldest[0] = 'A'; oldest[1] = oldest[27] = 0;
|
---|
| 463 | while (!(d = opendir(".")))
|
---|
| 464 | pause2cannot("open directory, want rotate", ld->name);
|
---|
| 465 | errno = 0;
|
---|
| 466 | while ((f = readdir(d))) {
|
---|
| 467 | if ((f->d_name[0] == '@') && (strlen(f->d_name) == 27)) {
|
---|
| 468 | if (f->d_name[26] == 't') {
|
---|
| 469 | if (unlink(f->d_name) == -1)
|
---|
| 470 | warn2("can't unlink processor leftover", f->d_name);
|
---|
| 471 | } else {
|
---|
| 472 | ++n;
|
---|
| 473 | if (strcmp(f->d_name, oldest) < 0)
|
---|
| 474 | memcpy(oldest, f->d_name, 27);
|
---|
| 475 | }
|
---|
| 476 | errno = 0;
|
---|
| 477 | }
|
---|
| 478 | }
|
---|
| 479 | if (errno)
|
---|
| 480 | warn2("can't read directory", ld->name);
|
---|
| 481 | closedir(d);
|
---|
| 482 |
|
---|
| 483 | if (ld->nmax && (n > ld->nmax)) {
|
---|
| 484 | if (verbose)
|
---|
| 485 | bb_error_msg(INFO"delete: %s/%s", ld->name, oldest);
|
---|
| 486 | if ((*oldest == '@') && (unlink(oldest) == -1))
|
---|
| 487 | warn2("can't unlink oldest logfile", ld->name);
|
---|
| 488 | }
|
---|
| 489 | }
|
---|
| 490 |
|
---|
| 491 | static unsigned rotate(struct logdir *ld)
|
---|
| 492 | {
|
---|
| 493 | struct stat st;
|
---|
| 494 | unsigned now;
|
---|
| 495 |
|
---|
| 496 | if (ld->fddir == -1) {
|
---|
| 497 | ld->rotate_period = 0;
|
---|
| 498 | return 0;
|
---|
| 499 | }
|
---|
| 500 | if (ld->ppid)
|
---|
| 501 | while (!processorstop(ld))
|
---|
| 502 | continue;
|
---|
| 503 |
|
---|
| 504 | while (fchdir(ld->fddir) == -1)
|
---|
| 505 | pause2cannot("change directory, want rotate", ld->name);
|
---|
| 506 |
|
---|
| 507 | /* create new filename */
|
---|
| 508 | ld->fnsave[25] = '.';
|
---|
| 509 | ld->fnsave[26] = 's';
|
---|
| 510 | if (ld->processor)
|
---|
| 511 | ld->fnsave[26] = 'u';
|
---|
| 512 | ld->fnsave[27] = '\0';
|
---|
| 513 | do {
|
---|
| 514 | fmt_time_bernstein_25(ld->fnsave);
|
---|
| 515 | errno = 0;
|
---|
| 516 | stat(ld->fnsave, &st);
|
---|
| 517 | } while (errno != ENOENT);
|
---|
| 518 |
|
---|
| 519 | now = monotonic_sec();
|
---|
| 520 | if (ld->rotate_period && LESS(ld->next_rotate, now)) {
|
---|
| 521 | ld->next_rotate = now + ld->rotate_period;
|
---|
| 522 | if (LESS(ld->next_rotate, nearest_rotate))
|
---|
| 523 | nearest_rotate = ld->next_rotate;
|
---|
| 524 | }
|
---|
| 525 |
|
---|
| 526 | if (ld->size > 0) {
|
---|
| 527 | while (fflush(ld->filecur) || fsync(ld->fdcur) == -1)
|
---|
| 528 | pause2cannot("fsync current logfile", ld->name);
|
---|
| 529 | while (fchmod(ld->fdcur, 0744) == -1)
|
---|
| 530 | pause2cannot("set mode of current", ld->name);
|
---|
| 531 | ////close(ld->fdcur);
|
---|
| 532 | fclose(ld->filecur);
|
---|
| 533 |
|
---|
| 534 | if (verbose) {
|
---|
| 535 | bb_error_msg(INFO"rename: %s/current %s %u", ld->name,
|
---|
| 536 | ld->fnsave, ld->size);
|
---|
| 537 | }
|
---|
| 538 | while (rename("current", ld->fnsave) == -1)
|
---|
| 539 | pause2cannot("rename current", ld->name);
|
---|
| 540 | while ((ld->fdcur = open("current", O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600)) == -1)
|
---|
| 541 | pause2cannot("create new current", ld->name);
|
---|
| 542 | while ((ld->filecur = fdopen(ld->fdcur, "a")) == NULL) ////
|
---|
| 543 | pause2cannot("create new current", ld->name); /* very unlikely */
|
---|
| 544 | setvbuf(ld->filecur, NULL, _IOFBF, linelen); ////
|
---|
| 545 | close_on_exec_on(ld->fdcur);
|
---|
| 546 | ld->size = 0;
|
---|
| 547 | while (fchmod(ld->fdcur, 0644) == -1)
|
---|
| 548 | pause2cannot("set mode of current", ld->name);
|
---|
| 549 |
|
---|
| 550 | rmoldest(ld);
|
---|
| 551 | processorstart(ld);
|
---|
| 552 | }
|
---|
| 553 |
|
---|
| 554 | while (fchdir(fdwdir) == -1)
|
---|
| 555 | pause1cannot("change to initial working directory");
|
---|
| 556 | return 1;
|
---|
| 557 | }
|
---|
| 558 |
|
---|
| 559 | static int buffer_pwrite(int n, char *s, unsigned len)
|
---|
| 560 | {
|
---|
| 561 | int i;
|
---|
| 562 | struct logdir *ld = &dir[n];
|
---|
| 563 |
|
---|
| 564 | if (ld->sizemax) {
|
---|
| 565 | if (ld->size >= ld->sizemax)
|
---|
| 566 | rotate(ld);
|
---|
| 567 | if (len > (ld->sizemax - ld->size))
|
---|
| 568 | len = ld->sizemax - ld->size;
|
---|
| 569 | }
|
---|
| 570 | while (1) {
|
---|
| 571 | ////i = full_write(ld->fdcur, s, len);
|
---|
| 572 | ////if (i != -1) break;
|
---|
| 573 | i = fwrite(s, 1, len, ld->filecur);
|
---|
| 574 | if (i == len) break;
|
---|
| 575 |
|
---|
| 576 | if ((errno == ENOSPC) && (ld->nmin < ld->nmax)) {
|
---|
| 577 | DIR *d;
|
---|
| 578 | struct dirent *f;
|
---|
| 579 | char oldest[FMT_PTIME];
|
---|
| 580 | int j = 0;
|
---|
| 581 |
|
---|
| 582 | while (fchdir(ld->fddir) == -1)
|
---|
| 583 | pause2cannot("change directory, want remove old logfile",
|
---|
| 584 | ld->name);
|
---|
| 585 | oldest[0] = 'A';
|
---|
| 586 | oldest[1] = oldest[27] = '\0';
|
---|
| 587 | while (!(d = opendir(".")))
|
---|
| 588 | pause2cannot("open directory, want remove old logfile",
|
---|
| 589 | ld->name);
|
---|
| 590 | errno = 0;
|
---|
| 591 | while ((f = readdir(d)))
|
---|
| 592 | if ((f->d_name[0] == '@') && (strlen(f->d_name) == 27)) {
|
---|
| 593 | ++j;
|
---|
| 594 | if (strcmp(f->d_name, oldest) < 0)
|
---|
| 595 | memcpy(oldest, f->d_name, 27);
|
---|
| 596 | }
|
---|
| 597 | if (errno) warn2("can't read directory, want remove old logfile",
|
---|
| 598 | ld->name);
|
---|
| 599 | closedir(d);
|
---|
| 600 | errno = ENOSPC;
|
---|
| 601 | if (j > ld->nmin) {
|
---|
| 602 | if (*oldest == '@') {
|
---|
| 603 | bb_error_msg(WARNING"out of disk space, delete: %s/%s",
|
---|
| 604 | ld->name, oldest);
|
---|
| 605 | errno = 0;
|
---|
| 606 | if (unlink(oldest) == -1) {
|
---|
| 607 | warn2("can't unlink oldest logfile", ld->name);
|
---|
| 608 | errno = ENOSPC;
|
---|
| 609 | }
|
---|
| 610 | while (fchdir(fdwdir) == -1)
|
---|
| 611 | pause1cannot("change to initial working directory");
|
---|
| 612 | }
|
---|
| 613 | }
|
---|
| 614 | }
|
---|
| 615 | if (errno)
|
---|
| 616 | pause2cannot("write to current", ld->name);
|
---|
| 617 | }
|
---|
| 618 |
|
---|
| 619 | ld->size += i;
|
---|
| 620 | if (ld->sizemax)
|
---|
| 621 | if (s[i-1] == '\n')
|
---|
| 622 | if (ld->size >= (ld->sizemax - linemax))
|
---|
| 623 | rotate(ld);
|
---|
| 624 | return i;
|
---|
| 625 | }
|
---|
| 626 |
|
---|
| 627 | static void logdir_close(struct logdir *ld)
|
---|
| 628 | {
|
---|
| 629 | if (ld->fddir == -1)
|
---|
| 630 | return;
|
---|
| 631 | if (verbose)
|
---|
| 632 | bb_error_msg(INFO"close: %s", ld->name);
|
---|
| 633 | close(ld->fddir);
|
---|
| 634 | ld->fddir = -1;
|
---|
| 635 | if (ld->fdcur == -1)
|
---|
| 636 | return; /* impossible */
|
---|
| 637 | while (fflush(ld->filecur) || fsync(ld->fdcur) == -1)
|
---|
| 638 | pause2cannot("fsync current logfile", ld->name);
|
---|
| 639 | while (fchmod(ld->fdcur, 0744) == -1)
|
---|
| 640 | pause2cannot("set mode of current", ld->name);
|
---|
| 641 | ////close(ld->fdcur);
|
---|
| 642 | fclose(ld->filecur);
|
---|
| 643 | ld->fdcur = -1;
|
---|
| 644 | if (ld->fdlock == -1)
|
---|
| 645 | return; /* impossible */
|
---|
| 646 | close(ld->fdlock);
|
---|
| 647 | ld->fdlock = -1;
|
---|
| 648 | free(ld->processor);
|
---|
| 649 | ld->processor = NULL;
|
---|
| 650 | }
|
---|
| 651 |
|
---|
| 652 | static NOINLINE unsigned logdir_open(struct logdir *ld, const char *fn)
|
---|
| 653 | {
|
---|
| 654 | char buf[128];
|
---|
| 655 | unsigned now;
|
---|
| 656 | char *new, *s, *np;
|
---|
| 657 | int i;
|
---|
| 658 | struct stat st;
|
---|
| 659 |
|
---|
| 660 | now = monotonic_sec();
|
---|
| 661 |
|
---|
| 662 | ld->fddir = open(fn, O_RDONLY|O_NDELAY);
|
---|
| 663 | if (ld->fddir == -1) {
|
---|
| 664 | warn2("can't open log directory", (char*)fn);
|
---|
| 665 | return 0;
|
---|
| 666 | }
|
---|
| 667 | close_on_exec_on(ld->fddir);
|
---|
| 668 | if (fchdir(ld->fddir) == -1) {
|
---|
| 669 | logdir_close(ld);
|
---|
| 670 | warn2("can't change directory", (char*)fn);
|
---|
| 671 | return 0;
|
---|
| 672 | }
|
---|
| 673 | ld->fdlock = open("lock", O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600);
|
---|
| 674 | if ((ld->fdlock == -1)
|
---|
| 675 | || (flock(ld->fdlock, LOCK_EX | LOCK_NB) == -1)
|
---|
| 676 | ) {
|
---|
| 677 | logdir_close(ld);
|
---|
| 678 | warn2("can't lock directory", (char*)fn);
|
---|
| 679 | while (fchdir(fdwdir) == -1)
|
---|
| 680 | pause1cannot("change to initial working directory");
|
---|
| 681 | return 0;
|
---|
| 682 | }
|
---|
| 683 | close_on_exec_on(ld->fdlock);
|
---|
| 684 |
|
---|
| 685 | ld->size = 0;
|
---|
| 686 | ld->sizemax = 1000000;
|
---|
| 687 | ld->nmax = ld->nmin = 10;
|
---|
| 688 | ld->rotate_period = 0;
|
---|
| 689 | ld->name = (char*)fn;
|
---|
| 690 | ld->ppid = 0;
|
---|
| 691 | ld->match = '+';
|
---|
| 692 | free(ld->inst); ld->inst = NULL;
|
---|
| 693 | free(ld->processor); ld->processor = NULL;
|
---|
| 694 |
|
---|
| 695 | /* read config */
|
---|
| 696 | i = open_read_close("config", buf, sizeof(buf) - 1);
|
---|
| 697 | if (i < 0 && errno != ENOENT)
|
---|
| 698 | bb_perror_msg(WARNING"%s/config", ld->name);
|
---|
| 699 | if (i > 0) {
|
---|
| 700 | buf[i] = '\0';
|
---|
| 701 | if (verbose)
|
---|
| 702 | bb_error_msg(INFO"read: %s/config", ld->name);
|
---|
| 703 | s = buf;
|
---|
| 704 | while (s) {
|
---|
| 705 | np = strchr(s, '\n');
|
---|
| 706 | if (np)
|
---|
| 707 | *np++ = '\0';
|
---|
| 708 | switch (s[0]) {
|
---|
| 709 | case '+':
|
---|
| 710 | case '-':
|
---|
| 711 | case 'e':
|
---|
| 712 | case 'E':
|
---|
| 713 | /* Filtering requires one-line buffering,
|
---|
| 714 | * resetting the "find newline" function
|
---|
| 715 | * accordingly */
|
---|
| 716 | memRchr = memchr;
|
---|
| 717 | /* Add '\n'-terminated line to ld->inst */
|
---|
| 718 | while (1) {
|
---|
| 719 | int l = asprintf(&new, "%s%s\n", ld->inst ? ld->inst : "", s);
|
---|
| 720 | if (l >= 0 && new)
|
---|
| 721 | break;
|
---|
| 722 | pause_nomem();
|
---|
| 723 | }
|
---|
| 724 | free(ld->inst);
|
---|
| 725 | ld->inst = new;
|
---|
| 726 | break;
|
---|
| 727 | case 's': {
|
---|
| 728 | static const struct suffix_mult km_suffixes[] = {
|
---|
| 729 | { "k", 1024 },
|
---|
| 730 | { "m", 1024*1024 },
|
---|
| 731 | { "", 0 }
|
---|
| 732 | };
|
---|
| 733 | ld->sizemax = xatou_sfx(&s[1], km_suffixes);
|
---|
| 734 | break;
|
---|
| 735 | }
|
---|
| 736 | case 'n':
|
---|
| 737 | ld->nmax = xatoi_positive(&s[1]);
|
---|
| 738 | break;
|
---|
| 739 | case 'N':
|
---|
| 740 | ld->nmin = xatoi_positive(&s[1]);
|
---|
| 741 | break;
|
---|
| 742 | case 't': {
|
---|
| 743 | static const struct suffix_mult mh_suffixes[] = {
|
---|
| 744 | { "m", 60 },
|
---|
| 745 | { "h", 60*60 },
|
---|
| 746 | /*{ "d", 24*60*60 },*/
|
---|
| 747 | { "", 0 }
|
---|
| 748 | };
|
---|
| 749 | ld->rotate_period = xatou_sfx(&s[1], mh_suffixes);
|
---|
| 750 | if (ld->rotate_period) {
|
---|
| 751 | ld->next_rotate = now + ld->rotate_period;
|
---|
| 752 | if (!tmaxflag || LESS(ld->next_rotate, nearest_rotate))
|
---|
| 753 | nearest_rotate = ld->next_rotate;
|
---|
| 754 | tmaxflag = 1;
|
---|
| 755 | }
|
---|
| 756 | break;
|
---|
| 757 | }
|
---|
| 758 | case '!':
|
---|
| 759 | if (s[1]) {
|
---|
| 760 | free(ld->processor);
|
---|
| 761 | ld->processor = wstrdup(s);
|
---|
| 762 | }
|
---|
| 763 | break;
|
---|
| 764 | }
|
---|
| 765 | s = np;
|
---|
| 766 | }
|
---|
| 767 | /* Convert "aa\nbb\ncc\n\0" to "aa\0bb\0cc\0\0" */
|
---|
| 768 | s = ld->inst;
|
---|
| 769 | while (s) {
|
---|
| 770 | np = strchr(s, '\n');
|
---|
| 771 | if (np)
|
---|
| 772 | *np++ = '\0';
|
---|
| 773 | s = np;
|
---|
| 774 | }
|
---|
| 775 | }
|
---|
| 776 |
|
---|
| 777 | /* open current */
|
---|
| 778 | i = stat("current", &st);
|
---|
| 779 | if (i != -1) {
|
---|
| 780 | if (st.st_size && !(st.st_mode & S_IXUSR)) {
|
---|
| 781 | ld->fnsave[25] = '.';
|
---|
| 782 | ld->fnsave[26] = 'u';
|
---|
| 783 | ld->fnsave[27] = '\0';
|
---|
| 784 | do {
|
---|
| 785 | fmt_time_bernstein_25(ld->fnsave);
|
---|
| 786 | errno = 0;
|
---|
| 787 | stat(ld->fnsave, &st);
|
---|
| 788 | } while (errno != ENOENT);
|
---|
| 789 | while (rename("current", ld->fnsave) == -1)
|
---|
| 790 | pause2cannot("rename current", ld->name);
|
---|
| 791 | rmoldest(ld);
|
---|
| 792 | i = -1;
|
---|
| 793 | } else {
|
---|
| 794 | /* st.st_size can be not just bigger, but WIDER!
|
---|
| 795 | * This code is safe: if st.st_size > 4GB, we select
|
---|
| 796 | * ld->sizemax (because it's "unsigned") */
|
---|
| 797 | ld->size = (st.st_size > ld->sizemax) ? ld->sizemax : st.st_size;
|
---|
| 798 | }
|
---|
| 799 | } else {
|
---|
| 800 | if (errno != ENOENT) {
|
---|
| 801 | logdir_close(ld);
|
---|
| 802 | warn2("can't stat current", ld->name);
|
---|
| 803 | while (fchdir(fdwdir) == -1)
|
---|
| 804 | pause1cannot("change to initial working directory");
|
---|
| 805 | return 0;
|
---|
| 806 | }
|
---|
| 807 | }
|
---|
| 808 | while ((ld->fdcur = open("current", O_WRONLY|O_NDELAY|O_APPEND|O_CREAT, 0600)) == -1)
|
---|
| 809 | pause2cannot("open current", ld->name);
|
---|
| 810 | while ((ld->filecur = fdopen(ld->fdcur, "a")) == NULL)
|
---|
| 811 | pause2cannot("open current", ld->name); ////
|
---|
| 812 | setvbuf(ld->filecur, NULL, _IOFBF, linelen); ////
|
---|
| 813 |
|
---|
| 814 | close_on_exec_on(ld->fdcur);
|
---|
| 815 | while (fchmod(ld->fdcur, 0644) == -1)
|
---|
| 816 | pause2cannot("set mode of current", ld->name);
|
---|
| 817 |
|
---|
| 818 | if (verbose) {
|
---|
| 819 | if (i == 0) bb_error_msg(INFO"append: %s/current", ld->name);
|
---|
| 820 | else bb_error_msg(INFO"new: %s/current", ld->name);
|
---|
| 821 | }
|
---|
| 822 |
|
---|
| 823 | while (fchdir(fdwdir) == -1)
|
---|
| 824 | pause1cannot("change to initial working directory");
|
---|
| 825 | return 1;
|
---|
| 826 | }
|
---|
| 827 |
|
---|
| 828 | static void logdirs_reopen(void)
|
---|
| 829 | {
|
---|
| 830 | int l;
|
---|
| 831 | int ok = 0;
|
---|
| 832 |
|
---|
| 833 | tmaxflag = 0;
|
---|
| 834 | for (l = 0; l < dirn; ++l) {
|
---|
| 835 | logdir_close(&dir[l]);
|
---|
| 836 | if (logdir_open(&dir[l], fndir[l]))
|
---|
| 837 | ok = 1;
|
---|
| 838 | }
|
---|
| 839 | if (!ok)
|
---|
| 840 | fatalx("no functional log directories");
|
---|
| 841 | }
|
---|
| 842 |
|
---|
| 843 | /* Will look good in libbb one day */
|
---|
| 844 | static ssize_t ndelay_read(int fd, void *buf, size_t count)
|
---|
| 845 | {
|
---|
| 846 | if (!(fl_flag_0 & O_NONBLOCK))
|
---|
| 847 | fcntl(fd, F_SETFL, fl_flag_0 | O_NONBLOCK);
|
---|
| 848 | count = safe_read(fd, buf, count);
|
---|
| 849 | if (!(fl_flag_0 & O_NONBLOCK))
|
---|
| 850 | fcntl(fd, F_SETFL, fl_flag_0);
|
---|
| 851 | return count;
|
---|
| 852 | }
|
---|
| 853 |
|
---|
| 854 | /* Used for reading stdin */
|
---|
| 855 | static int buffer_pread(/*int fd, */char *s, unsigned len)
|
---|
| 856 | {
|
---|
| 857 | unsigned now;
|
---|
| 858 | struct pollfd input;
|
---|
| 859 | int i;
|
---|
| 860 |
|
---|
| 861 | input.fd = STDIN_FILENO;
|
---|
| 862 | input.events = POLLIN;
|
---|
| 863 |
|
---|
| 864 | do {
|
---|
| 865 | if (rotateasap) {
|
---|
| 866 | for (i = 0; i < dirn; ++i)
|
---|
| 867 | rotate(dir + i);
|
---|
| 868 | rotateasap = 0;
|
---|
| 869 | }
|
---|
| 870 | if (exitasap) {
|
---|
| 871 | if (linecomplete)
|
---|
| 872 | return 0;
|
---|
| 873 | len = 1;
|
---|
| 874 | }
|
---|
| 875 | if (reopenasap) {
|
---|
| 876 | logdirs_reopen();
|
---|
| 877 | reopenasap = 0;
|
---|
| 878 | }
|
---|
| 879 | now = monotonic_sec();
|
---|
| 880 | nearest_rotate = now + (45 * 60 + 45);
|
---|
| 881 | for (i = 0; i < dirn; ++i) {
|
---|
| 882 | if (dir[i].rotate_period) {
|
---|
| 883 | if (LESS(dir[i].next_rotate, now))
|
---|
| 884 | rotate(dir + i);
|
---|
| 885 | if (LESS(dir[i].next_rotate, nearest_rotate))
|
---|
| 886 | nearest_rotate = dir[i].next_rotate;
|
---|
| 887 | }
|
---|
| 888 | }
|
---|
| 889 |
|
---|
| 890 | sigprocmask(SIG_UNBLOCK, &blocked_sigset, NULL);
|
---|
| 891 | i = nearest_rotate - now;
|
---|
| 892 | if (i > 1000000)
|
---|
| 893 | i = 1000000;
|
---|
| 894 | if (i <= 0)
|
---|
| 895 | i = 1;
|
---|
| 896 | poll(&input, 1, i * 1000);
|
---|
| 897 | sigprocmask(SIG_BLOCK, &blocked_sigset, NULL);
|
---|
| 898 |
|
---|
| 899 | i = ndelay_read(STDIN_FILENO, s, len);
|
---|
| 900 | if (i >= 0)
|
---|
| 901 | break;
|
---|
| 902 | if (errno == EINTR)
|
---|
| 903 | continue;
|
---|
| 904 | if (errno != EAGAIN) {
|
---|
| 905 | warn("can't read standard input");
|
---|
| 906 | break;
|
---|
| 907 | }
|
---|
| 908 | /* else: EAGAIN - normal, repeat silently */
|
---|
| 909 | } while (!exitasap);
|
---|
| 910 |
|
---|
| 911 | if (i > 0) {
|
---|
| 912 | int cnt;
|
---|
| 913 | linecomplete = (s[i-1] == '\n');
|
---|
| 914 | if (!repl)
|
---|
| 915 | return i;
|
---|
| 916 |
|
---|
| 917 | cnt = i;
|
---|
| 918 | while (--cnt >= 0) {
|
---|
| 919 | char ch = *s;
|
---|
| 920 | if (ch != '\n') {
|
---|
| 921 | if (ch < 32 || ch > 126)
|
---|
| 922 | *s = repl;
|
---|
| 923 | else {
|
---|
| 924 | int j;
|
---|
| 925 | for (j = 0; replace[j]; ++j) {
|
---|
| 926 | if (ch == replace[j]) {
|
---|
| 927 | *s = repl;
|
---|
| 928 | break;
|
---|
| 929 | }
|
---|
| 930 | }
|
---|
| 931 | }
|
---|
| 932 | }
|
---|
| 933 | s++;
|
---|
| 934 | }
|
---|
| 935 | }
|
---|
| 936 | return i;
|
---|
| 937 | }
|
---|
| 938 |
|
---|
| 939 | static void sig_term_handler(int sig_no UNUSED_PARAM)
|
---|
| 940 | {
|
---|
| 941 | if (verbose)
|
---|
| 942 | bb_error_msg(INFO"sig%s received", "term");
|
---|
| 943 | exitasap = 1;
|
---|
| 944 | }
|
---|
| 945 |
|
---|
| 946 | static void sig_child_handler(int sig_no UNUSED_PARAM)
|
---|
| 947 | {
|
---|
| 948 | pid_t pid;
|
---|
| 949 | int l;
|
---|
| 950 |
|
---|
| 951 | if (verbose)
|
---|
| 952 | bb_error_msg(INFO"sig%s received", "child");
|
---|
| 953 | while ((pid = wait_any_nohang(&wstat)) > 0) {
|
---|
| 954 | for (l = 0; l < dirn; ++l) {
|
---|
| 955 | if (dir[l].ppid == pid) {
|
---|
| 956 | dir[l].ppid = 0;
|
---|
| 957 | processorstop(&dir[l]);
|
---|
| 958 | break;
|
---|
| 959 | }
|
---|
| 960 | }
|
---|
| 961 | }
|
---|
| 962 | }
|
---|
| 963 |
|
---|
| 964 | static void sig_alarm_handler(int sig_no UNUSED_PARAM)
|
---|
| 965 | {
|
---|
| 966 | if (verbose)
|
---|
| 967 | bb_error_msg(INFO"sig%s received", "alarm");
|
---|
| 968 | rotateasap = 1;
|
---|
| 969 | }
|
---|
| 970 |
|
---|
| 971 | static void sig_hangup_handler(int sig_no UNUSED_PARAM)
|
---|
| 972 | {
|
---|
| 973 | if (verbose)
|
---|
| 974 | bb_error_msg(INFO"sig%s received", "hangup");
|
---|
| 975 | reopenasap = 1;
|
---|
| 976 | }
|
---|
| 977 |
|
---|
| 978 | static void logmatch(struct logdir *ld)
|
---|
| 979 | {
|
---|
| 980 | char *s;
|
---|
| 981 |
|
---|
| 982 | ld->match = '+';
|
---|
| 983 | ld->matcherr = 'E';
|
---|
| 984 | s = ld->inst;
|
---|
| 985 | while (s && s[0]) {
|
---|
| 986 | switch (s[0]) {
|
---|
| 987 | case '+':
|
---|
| 988 | case '-':
|
---|
| 989 | if (pmatch(s+1, line, linelen))
|
---|
| 990 | ld->match = s[0];
|
---|
| 991 | break;
|
---|
| 992 | case 'e':
|
---|
| 993 | case 'E':
|
---|
| 994 | if (pmatch(s+1, line, linelen))
|
---|
| 995 | ld->matcherr = s[0];
|
---|
| 996 | break;
|
---|
| 997 | }
|
---|
| 998 | s += strlen(s) + 1;
|
---|
| 999 | }
|
---|
| 1000 | }
|
---|
| 1001 |
|
---|
| 1002 | int svlogd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 1003 | int svlogd_main(int argc, char **argv)
|
---|
| 1004 | {
|
---|
| 1005 | char *r, *l, *b;
|
---|
| 1006 | ssize_t stdin_cnt = 0;
|
---|
| 1007 | int i;
|
---|
| 1008 | unsigned opt;
|
---|
| 1009 | unsigned timestamp = 0;
|
---|
| 1010 |
|
---|
| 1011 | INIT_G();
|
---|
| 1012 |
|
---|
| 1013 | opt_complementary = "tt:vv";
|
---|
| 1014 | opt = getopt32(argv, "r:R:l:b:tv",
|
---|
| 1015 | &r, &replace, &l, &b, ×tamp, &verbose);
|
---|
| 1016 | if (opt & 1) { // -r
|
---|
| 1017 | repl = r[0];
|
---|
| 1018 | if (!repl || r[1])
|
---|
| 1019 | bb_show_usage();
|
---|
| 1020 | }
|
---|
| 1021 | if (opt & 2) if (!repl) repl = '_'; // -R
|
---|
| 1022 | if (opt & 4) { // -l
|
---|
| 1023 | linemax = xatou_range(l, 0, BUFSIZ-26);
|
---|
| 1024 | if (linemax == 0)
|
---|
| 1025 | linemax = BUFSIZ-26;
|
---|
| 1026 | if (linemax < 256)
|
---|
| 1027 | linemax = 256;
|
---|
| 1028 | }
|
---|
| 1029 | ////if (opt & 8) { // -b
|
---|
| 1030 | //// buflen = xatoi_positive(b);
|
---|
| 1031 | //// if (buflen == 0) buflen = 1024;
|
---|
| 1032 | ////}
|
---|
| 1033 | //if (opt & 0x10) timestamp++; // -t
|
---|
| 1034 | //if (opt & 0x20) verbose++; // -v
|
---|
| 1035 | //if (timestamp > 2) timestamp = 2;
|
---|
| 1036 | argv += optind;
|
---|
| 1037 | argc -= optind;
|
---|
| 1038 |
|
---|
| 1039 | dirn = argc;
|
---|
| 1040 | if (dirn <= 0)
|
---|
| 1041 | bb_show_usage();
|
---|
| 1042 | ////if (buflen <= linemax) bb_show_usage();
|
---|
| 1043 | fdwdir = xopen(".", O_RDONLY|O_NDELAY);
|
---|
| 1044 | close_on_exec_on(fdwdir);
|
---|
| 1045 | dir = xzalloc(dirn * sizeof(dir[0]));
|
---|
| 1046 | for (i = 0; i < dirn; ++i) {
|
---|
| 1047 | dir[i].fddir = -1;
|
---|
| 1048 | dir[i].fdcur = -1;
|
---|
| 1049 | ////dir[i].btmp = xmalloc(buflen);
|
---|
| 1050 | /*dir[i].ppid = 0;*/
|
---|
| 1051 | }
|
---|
| 1052 | /* line = xmalloc(linemax + (timestamp ? 26 : 0)); */
|
---|
| 1053 | fndir = argv;
|
---|
| 1054 | /* We cannot set NONBLOCK on fd #0 permanently - this setting
|
---|
| 1055 | * _isn't_ per-process! It is shared among all other processes
|
---|
| 1056 | * with the same stdin */
|
---|
| 1057 | fl_flag_0 = fcntl(0, F_GETFL);
|
---|
| 1058 |
|
---|
| 1059 | sigemptyset(&blocked_sigset);
|
---|
| 1060 | sigaddset(&blocked_sigset, SIGTERM);
|
---|
| 1061 | sigaddset(&blocked_sigset, SIGCHLD);
|
---|
| 1062 | sigaddset(&blocked_sigset, SIGALRM);
|
---|
| 1063 | sigaddset(&blocked_sigset, SIGHUP);
|
---|
| 1064 | sigprocmask(SIG_BLOCK, &blocked_sigset, NULL);
|
---|
| 1065 | bb_signals_recursive_norestart(1 << SIGTERM, sig_term_handler);
|
---|
| 1066 | bb_signals_recursive_norestart(1 << SIGCHLD, sig_child_handler);
|
---|
| 1067 | bb_signals_recursive_norestart(1 << SIGALRM, sig_alarm_handler);
|
---|
| 1068 | bb_signals_recursive_norestart(1 << SIGHUP, sig_hangup_handler);
|
---|
| 1069 |
|
---|
| 1070 | /* Without timestamps, we don't have to print each line
|
---|
| 1071 | * separately, so we can look for _last_ newline, not first,
|
---|
| 1072 | * thus batching writes. If filtering is enabled in config,
|
---|
| 1073 | * logdirs_reopen resets it to memchr.
|
---|
| 1074 | */
|
---|
| 1075 | memRchr = (timestamp ? memchr : memrchr);
|
---|
| 1076 |
|
---|
| 1077 | logdirs_reopen();
|
---|
| 1078 |
|
---|
| 1079 | setvbuf(stderr, NULL, _IOFBF, linelen);
|
---|
| 1080 |
|
---|
| 1081 | /* Each iteration processes one or more lines */
|
---|
| 1082 | while (1) {
|
---|
| 1083 | char stamp[FMT_PTIME];
|
---|
| 1084 | char *lineptr;
|
---|
| 1085 | char *printptr;
|
---|
| 1086 | char *np;
|
---|
| 1087 | int printlen;
|
---|
| 1088 | char ch;
|
---|
| 1089 |
|
---|
| 1090 | lineptr = line;
|
---|
| 1091 | if (timestamp)
|
---|
| 1092 | lineptr += 26;
|
---|
| 1093 |
|
---|
| 1094 | /* lineptr[0..linemax-1] - buffer for stdin */
|
---|
| 1095 | /* (possibly has some unprocessed data from prev loop) */
|
---|
| 1096 |
|
---|
| 1097 | /* Refill the buffer if needed */
|
---|
| 1098 | np = memRchr(lineptr, '\n', stdin_cnt);
|
---|
| 1099 | if (!np && !exitasap) {
|
---|
| 1100 | i = linemax - stdin_cnt; /* avail. bytes at tail */
|
---|
| 1101 | if (i >= 128) {
|
---|
| 1102 | i = buffer_pread(/*0, */lineptr + stdin_cnt, i);
|
---|
| 1103 | if (i <= 0) /* EOF or error on stdin */
|
---|
| 1104 | exitasap = 1;
|
---|
| 1105 | else {
|
---|
| 1106 | np = memRchr(lineptr + stdin_cnt, '\n', i);
|
---|
| 1107 | stdin_cnt += i;
|
---|
| 1108 | }
|
---|
| 1109 | }
|
---|
| 1110 | }
|
---|
| 1111 | if (stdin_cnt <= 0 && exitasap)
|
---|
| 1112 | break;
|
---|
| 1113 |
|
---|
| 1114 | /* Search for '\n' (in fact, np already holds the result) */
|
---|
| 1115 | linelen = stdin_cnt;
|
---|
| 1116 | if (np) {
|
---|
| 1117 | print_to_nl:
|
---|
| 1118 | /* NB: starting from here lineptr may point
|
---|
| 1119 | * farther out into line[] */
|
---|
| 1120 | linelen = np - lineptr + 1;
|
---|
| 1121 | }
|
---|
| 1122 | /* linelen == no of chars incl. '\n' (or == stdin_cnt) */
|
---|
| 1123 | ch = lineptr[linelen-1];
|
---|
| 1124 |
|
---|
| 1125 | /* Biggest performance hit was coming from the fact
|
---|
| 1126 | * that we did not buffer writes. We were reading many lines
|
---|
| 1127 | * in one read() above, but wrote one line per write().
|
---|
| 1128 | * We are using stdio to fix that */
|
---|
| 1129 |
|
---|
| 1130 | /* write out lineptr[0..linelen-1] to each log destination
|
---|
| 1131 | * (or lineptr[-26..linelen-1] if timestamping) */
|
---|
| 1132 | printlen = linelen;
|
---|
| 1133 | printptr = lineptr;
|
---|
| 1134 | if (timestamp) {
|
---|
| 1135 | if (timestamp == 1)
|
---|
| 1136 | fmt_time_bernstein_25(stamp);
|
---|
| 1137 | else /* 2: */
|
---|
| 1138 | fmt_time_human_30nul(stamp);
|
---|
| 1139 | printlen += 26;
|
---|
| 1140 | printptr -= 26;
|
---|
| 1141 | memcpy(printptr, stamp, 25);
|
---|
| 1142 | printptr[25] = ' ';
|
---|
| 1143 | }
|
---|
| 1144 | for (i = 0; i < dirn; ++i) {
|
---|
| 1145 | struct logdir *ld = &dir[i];
|
---|
| 1146 | if (ld->fddir == -1)
|
---|
| 1147 | continue;
|
---|
| 1148 | if (ld->inst)
|
---|
| 1149 | logmatch(ld);
|
---|
| 1150 | if (ld->matcherr == 'e') {
|
---|
| 1151 | /* runit-1.8.0 compat: if timestamping, do it on stderr too */
|
---|
| 1152 | ////full_write(STDERR_FILENO, printptr, printlen);
|
---|
| 1153 | fwrite(printptr, 1, printlen, stderr);
|
---|
| 1154 | }
|
---|
| 1155 | if (ld->match != '+')
|
---|
| 1156 | continue;
|
---|
| 1157 | buffer_pwrite(i, printptr, printlen);
|
---|
| 1158 | }
|
---|
| 1159 |
|
---|
| 1160 | /* If we didn't see '\n' (long input line), */
|
---|
| 1161 | /* read/write repeatedly until we see it */
|
---|
| 1162 | while (ch != '\n') {
|
---|
| 1163 | /* lineptr is emptied now, safe to use as buffer */
|
---|
| 1164 | stdin_cnt = exitasap ? -1 : buffer_pread(/*0, */lineptr, linemax);
|
---|
| 1165 | if (stdin_cnt <= 0) { /* EOF or error on stdin */
|
---|
| 1166 | exitasap = 1;
|
---|
| 1167 | lineptr[0] = ch = '\n';
|
---|
| 1168 | linelen = 1;
|
---|
| 1169 | stdin_cnt = 1;
|
---|
| 1170 | } else {
|
---|
| 1171 | linelen = stdin_cnt;
|
---|
| 1172 | np = memRchr(lineptr, '\n', stdin_cnt);
|
---|
| 1173 | if (np)
|
---|
| 1174 | linelen = np - lineptr + 1;
|
---|
| 1175 | ch = lineptr[linelen-1];
|
---|
| 1176 | }
|
---|
| 1177 | /* linelen == no of chars incl. '\n' (or == stdin_cnt) */
|
---|
| 1178 | for (i = 0; i < dirn; ++i) {
|
---|
| 1179 | if (dir[i].fddir == -1)
|
---|
| 1180 | continue;
|
---|
| 1181 | if (dir[i].matcherr == 'e') {
|
---|
| 1182 | ////full_write(STDERR_FILENO, lineptr, linelen);
|
---|
| 1183 | fwrite(lineptr, 1, linelen, stderr);
|
---|
| 1184 | }
|
---|
| 1185 | if (dir[i].match != '+')
|
---|
| 1186 | continue;
|
---|
| 1187 | buffer_pwrite(i, lineptr, linelen);
|
---|
| 1188 | }
|
---|
| 1189 | }
|
---|
| 1190 |
|
---|
| 1191 | stdin_cnt -= linelen;
|
---|
| 1192 | if (stdin_cnt > 0) {
|
---|
| 1193 | lineptr += linelen;
|
---|
| 1194 | /* If we see another '\n', we don't need to read
|
---|
| 1195 | * next piece of input: can print what we have */
|
---|
| 1196 | np = memRchr(lineptr, '\n', stdin_cnt);
|
---|
| 1197 | if (np)
|
---|
| 1198 | goto print_to_nl;
|
---|
| 1199 | /* Move unprocessed data to the front of line */
|
---|
| 1200 | memmove((timestamp ? line+26 : line), lineptr, stdin_cnt);
|
---|
| 1201 | }
|
---|
| 1202 | fflush_all();////
|
---|
| 1203 | }
|
---|
| 1204 |
|
---|
| 1205 | for (i = 0; i < dirn; ++i) {
|
---|
| 1206 | if (dir[i].ppid)
|
---|
| 1207 | while (!processorstop(&dir[i]))
|
---|
| 1208 | continue;
|
---|
| 1209 | logdir_close(&dir[i]);
|
---|
| 1210 | }
|
---|
| 1211 | return 0;
|
---|
| 1212 | }
|
---|