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comparison src/wflogs-config.cpp @ 6:a043b7d7269c

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truncate output files after processing them
author Carl Byington <carl@five-ten-sg.com>
date Fri, 17 May 2013 12:22:33 -0700
parents 37eace15ef87
children 306059d0f677
comparison
equal deleted inserted replaced
5:efe0b291233a 6:a043b7d7269c
75 75
76 76
77 void CONTEXT::openo(bool msg) { 77 void CONTEXT::openo(bool msg) {
78 open_time = time(NULL); 78 open_time = time(NULL);
79 localtime_r(&open_time, &open_tm); 79 localtime_r(&open_time, &open_tm);
80 fdo = ::open(tempin, O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); 80 int flags = O_CREAT | O_WRONLY;
81 if (!msg) flags |= O_TRUNC;
82 fdo = ::open(tempin, flags, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
81 if (fdo == -1) { 83 if (fdo == -1) {
82 if (msg) { 84 if (msg) {
83 char buf[maxlen]; 85 char buf[maxlen];
84 snprintf(buf, sizeof(buf), "wflogs tempin file %s not writeable", tempin); 86 snprintf(buf, sizeof(buf), "wflogs tempin file %s not writeable", tempin);
85 tokp->token_error(buf); 87 tokp->token_error(buf);
108 } 110 }
109 if (msg) lseek(fd, 0, SEEK_END); 111 if (msg) lseek(fd, 0, SEEK_END);
110 if (fstat(fd, &openfdstat)) { 112 if (fstat(fd, &openfdstat)) {
111 close(); 113 close();
112 snprintf(buf, sizeof(buf), "syslog file %s cannot stat after open", fn); 114 snprintf(buf, sizeof(buf), "syslog file %s cannot stat after open", fn);
113 tokp->token_error(buf); 115 if (msg) tokp->token_error(buf);
114 } 116 }
115 // specify that this fd gets closed on exec, so that wflogs 117 // specify that this fd gets closed on exec, so that wflogs
116 // won't have access to it. 118 // won't have access to it.
117 int oldflags = fcntl(fd, F_GETFD, 0); 119 int oldflags = fcntl(fd, F_GETFD, 0);
118 if (oldflags >= 0) { 120 if (oldflags >= 0) {