author | Will Fiveash <will.fiveash@oracle.com> |
Wed, 24 Feb 2016 10:43:57 -0600 | |
changeset 5490 | 9bf0bc57423a |
child 6599 | 1d033832c5e7 |
permissions | -rw-r--r-- |
5490
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# |
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# This patch is to provide internal log rotation functionality for both |
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# kadmind & krb5kdc daemons. The functionality is defined in krb5.conf |
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# man page via 'admin_server_rotate' & 'kdc_rotate' parameters. |
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# |
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# Following two relations can be specified: |
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# |
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# period = delta_time |
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# versions = number |
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# |
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# NOTE: |
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# |
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# MIT Kerberos Consortium did not accept new features for MIT kerberos 1.13 |
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# release. For that matter, we would like to try to push this log rotation |
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# functionality in later MIT kerberos release, 1.14 or later. |
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# Patch source: in-house |
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# |
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--- ORIGINAL/src/lib/kadm5/logger.c 2014-08-11 02:19:59.000000000 -0700 |
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+++ krb5-1.13.mockup/src/lib/kadm5/logger.c 2014-09-11 17:13:22.608854008 -0700 |
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@@ -115,6 +115,13 @@ |
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struct log_file { |
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FILE *lf_filep; |
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char *lf_fname; |
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+ /* Solaris Kerberos */ |
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+ char *lf_fopen_mode; /* "a+" or "w" */ |
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+#define K_LOG_DEF_FILE_ROTATE_PERIOD -1 /* never */ |
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+#define K_LOG_DEF_FILE_ROTATE_VERSIONS 0 /* no versions */ |
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+ time_t lf_rotate_period; |
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+ time_t lf_last_rotated; |
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+ int lf_rotate_versions; |
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} log_file; |
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struct log_syslog { |
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int ls_facility; |
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@@ -128,6 +135,11 @@ |
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}; |
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#define lfu_filep log_union.log_file.lf_filep |
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#define lfu_fname log_union.log_file.lf_fname |
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+/* Solaris Kerberos */ |
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+#define lfu_fopen_mode log_union.log_file.lf_fopen_mode |
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+#define lfu_rotate_period log_union.log_file.lf_rotate_period |
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+#define lfu_last_rotated log_union.log_file.lf_last_rotated |
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+#define lfu_rotate_versions log_union.log_file.lf_rotate_versions |
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#define lsu_facility log_union.log_syslog.ls_facility |
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#define lsu_severity log_union.log_syslog.ls_severity |
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#define ldu_filep log_union.log_device.ld_filep |
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@@ -161,6 +173,133 @@ |
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-1) |
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#define DEVICE_CLOSE(d) fclose(d) |
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|
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+/* |
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+ * Solaris Kerberos |
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+ * klog_rotate() - roate a log file if we have specified rotation |
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+ * parameters in krb5.conf. |
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+ */ |
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+static void |
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+klog_rotate(struct log_entry *le) |
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+{ |
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+ time_t t; |
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+ int i; |
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+ char *name_buf1; |
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+ char *name_buf2; |
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+ char *old_name; |
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+ char *new_name; |
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+ char *tmp; |
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+ FILE *fp; |
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+ int num_vers; |
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+ mode_t old_umask; |
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+ |
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+ |
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+ /* |
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+ * By default we don't rotate. |
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+ */ |
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+ if (le->lfu_rotate_period == K_LOG_DEF_FILE_ROTATE_PERIOD) |
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+ return; |
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+ |
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+ t = time(0); |
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+ |
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+ if (t >= le->lfu_last_rotated + le->lfu_rotate_period) { |
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+ /* |
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+ * The N log file versions will be renamed X.N-1 X.N-2, ... X.0. |
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+ * So the allocate file name buffers that can the version |
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+ * number extensions. |
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+ * 32 extra bytes is plenty. |
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+ */ |
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+ name_buf1 = malloc(strlen(le->lfu_fname) + 32); |
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+ |
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+ if (name_buf1 == NULL) |
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+ return; |
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+ |
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+ name_buf2 = malloc(strlen(le->lfu_fname) + 32); |
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+ |
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+ if (name_buf2 == NULL) { |
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+ free(name_buf1); |
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+ return; |
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+ } |
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+ |
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+ old_name = name_buf1; |
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+ new_name = name_buf2; |
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+ |
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+ /* |
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+ * If there N versions, then the first one has file extension |
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+ * of N-1. |
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+ */ |
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+ (void) sprintf(new_name, "%s.%d", le->lfu_fname, |
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+ le->lfu_rotate_versions - 1); |
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+ |
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+ /* |
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+ * Rename file.N-2 to file.N-1, file.N-3 to file.N-2, ... |
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+ * file.0 to file.1 |
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+ */ |
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+ for (i = le->lfu_rotate_versions - 1; i > 0; i--) { |
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112 |
+ (void) sprintf(old_name, "%s.%d", le->lfu_fname, i - 1); |
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113 |
+ (void) rename(old_name, new_name); |
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114 |
+ |
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115 |
+ /* |
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116 |
+ * swap old name and new name. This way, |
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117 |
+ * on the next iteration, new_name.X |
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118 |
+ * becomes new_name.X-1. |
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119 |
+ */ |
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120 |
+ tmp = old_name; |
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121 |
+ old_name = new_name; |
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122 |
+ new_name = tmp; |
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123 |
+ } |
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124 |
+ old_name = le->lfu_fname; |
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125 |
+ |
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126 |
+ (void) rename(old_name, new_name); |
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127 |
+ |
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128 |
+ /* |
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129 |
+ * Even though we don't know yet if the fopen() |
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130 |
+ * of the log file will succeed, we mark the log |
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131 |
+ * as rotated. This is so we don't repeatably |
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132 |
+ * rotate file.N-2 to file.N-1 ... etc without |
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133 |
+ * waiting for the rotate period to elapse. |
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134 |
+ */ |
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135 |
+ le->lfu_last_rotated = t; |
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136 |
+ |
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137 |
+ /* |
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138 |
+ * Default log file creation mode should be read-only |
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139 |
+ * by owner(root), but the admin can override with |
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140 |
+ * chmod(1) if desired. |
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141 |
+ */ |
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142 |
+ |
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|
143 |
+ old_umask = umask(077); |
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|
144 |
+ fp = fopen(old_name, le->lfu_fopen_mode); |
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|
145 |
+ |
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|
146 |
+ umask(old_umask); |
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|
147 |
+ |
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|
148 |
+ if (fp != NULL) { |
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149 |
+ |
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|
150 |
+ (void) fclose(le->lfu_filep); |
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|
151 |
+ le->lfu_filep = fp; |
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152 |
+ |
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|
153 |
+ /* |
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|
154 |
+ * If the version parameter in krb5.conf was |
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155 |
+ * 0, then we take this to mean that rotating the |
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|
156 |
+ * log file will cause us to dispose of the |
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|
157 |
+ * old one, and created a new one. We have just |
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158 |
+ * renamed the old one to file.-1, so remove it. |
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|
159 |
+ */ |
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160 |
+ if (le->lfu_rotate_versions <= 0) |
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|
161 |
+ (void) unlink(new_name); |
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|
162 |
+ |
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|
163 |
+ } else { |
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|
164 |
+ fprintf(stderr, |
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|
165 |
+ _("During rotate, couldn't open log file %s: %s\n"), |
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166 |
+ old_name, error_message(errno)); |
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|
167 |
+ /* |
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168 |
+ * Put it back. |
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|
169 |
+ */ |
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170 |
+ (void) rename(new_name, old_name); |
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171 |
+ } |
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|
172 |
+ free(name_buf1); |
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|
173 |
+ free(name_buf2); |
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|
174 |
+ } |
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|
175 |
+} |
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|
176 |
+ |
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177 |
|
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|
178 |
/* |
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|
179 |
* klog_com_err_proc() - Handle com_err(3) messages as specified by the |
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180 |
@@ -276,6 +415,8 @@ |
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181 |
for (lindex = 0; lindex < log_control.log_nentries; lindex++) { |
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|
182 |
switch (log_control.log_entries[lindex].log_type) { |
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|
183 |
case K_LOG_FILE: |
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|
184 |
+ /* Solaris Kerberos */ |
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|
185 |
+ klog_rotate(&log_control.log_entries[lindex]); |
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|
186 |
case K_LOG_STDERR: |
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|
187 |
/* |
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|
188 |
* Files/standard error. |
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|
189 |
@@ -360,6 +501,7 @@ |
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|
190 |
int error; |
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|
191 |
int do_openlog, log_facility; |
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|
192 |
FILE *f; |
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|
193 |
+ mode_t old_umask; |
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|
194 |
|
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|
195 |
/* Initialize */ |
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|
196 |
do_openlog = 0; |
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|
197 |
@@ -423,12 +565,66 @@ |
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|
198 |
* Check for append/overwrite, then open the file. |
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|
199 |
*/ |
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|
200 |
if (cp[4] == ':' || cp[4] == '=') { |
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|
201 |
- f = fopen(&cp[5], (cp[4] == ':') ? "a" : "w"); |
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|
202 |
+ /* Solaris Kerberos */ |
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|
203 |
+ log_control.log_entries[i].lfu_fopen_mode = |
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|
204 |
+ (cp[4] == ':') ? "a" : "w"; |
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|
205 |
+ old_umask = umask(077); |
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|
206 |
+ f = fopen(&cp[5], |
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|
207 |
+ log_control.log_entries[i].lfu_fopen_mode); |
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|
208 |
+ umask(old_umask); |
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|
209 |
if (f) { |
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|
210 |
- set_cloexec_file(f); |
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|
211 |
+ char rotate_kw[128]; |
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|
212 |
log_control.log_entries[i].lfu_filep = f; |
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|
213 |
log_control.log_entries[i].log_type = K_LOG_FILE; |
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|
214 |
log_control.log_entries[i].lfu_fname = &cp[5]; |
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|
215 |
+ log_control.log_entries[i].lfu_rotate_period = |
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|
216 |
+ K_LOG_DEF_FILE_ROTATE_PERIOD; |
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|
217 |
+ log_control.log_entries[i].lfu_rotate_versions = |
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|
218 |
+ K_LOG_DEF_FILE_ROTATE_VERSIONS; |
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|
219 |
+ log_control.log_entries[i].lfu_last_rotated = |
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|
220 |
+ time(0); |
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|
221 |
+ |
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|
222 |
+ /* |
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|
223 |
+ * Now parse for ename_"rotate" = { |
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changeset
|
224 |
+ * period = XXX |
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+ * versions = 10 |
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+ * } |
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227 |
+ */ |
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+ if (strlen(ename) + strlen("_rotate") < |
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+ sizeof (rotate_kw)) { |
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+ |
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+ char *time; |
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+ krb5_deltat dt; |
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+ int vers; |
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234 |
+ |
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+ strcpy(rotate_kw, ename); |
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+ strcat(rotate_kw, "_rotate"); |
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237 |
+ |
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238 |
+ if (!profile_get_string(kcontext->profile, |
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+ "logging", rotate_kw, |
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240 |
+ "period", NULL, |
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241 |
+ &time)) { |
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242 |
+ |
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243 |
+ if (time != NULL) { |
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244 |
+ if (!krb5_string_to_deltat(time, |
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245 |
+ &dt)) { |
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246 |
+ log_control.log_entries[i].lfu_rotate_period = |
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247 |
+ (time_t) dt; |
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248 |
+ } |
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249 |
+ free(time); |
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250 |
+ } |
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251 |
+ } |
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252 |
+ |
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253 |
+ if (!profile_get_integer( |
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254 |
+ kcontext->profile, |
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255 |
+ "logging", rotate_kw, |
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|
256 |
+ "versions", |
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|
257 |
+ K_LOG_DEF_FILE_ROTATE_VERSIONS, |
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|
258 |
+ &vers)) { |
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259 |
+ log_control.log_entries[i].lfu_rotate_versions = vers; |
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|
260 |
+ } |
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|
261 |
+ |
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|
262 |
+ } |
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|
263 |
} else { |
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|
264 |
fprintf(stderr,"Couldn't open log file %s: %s\n", |
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|
265 |
&cp[5], error_message(errno)); |
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|
266 |
@@ -880,6 +1076,8 @@ |
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|
267 |
for (lindex = 0; lindex < log_control.log_nentries; lindex++) { |
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|
268 |
switch (log_control.log_entries[lindex].log_type) { |
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|
269 |
case K_LOG_FILE: |
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|
270 |
+ /* Solaris Kerberos */ |
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parents:
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|
271 |
+ klog_rotate(&log_control.log_entries[lindex]); |
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parents:
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|
272 |
case K_LOG_STDERR: |
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|
273 |
/* |
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|
274 |
* Files/standard error. |