[232] | 1 | /* |
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| 2 | * ksyslog: In-kernel syslog receiver |
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| 3 | * Copyright(C) 2013 Atzm WATANABE All rights reserved |
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| 4 | * Distributed under the GPL |
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| 5 | */ |
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| 6 | |
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| 7 | #ifndef KSYSLOG_H |
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| 8 | #define KSYSLOG_H |
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| 9 | |
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| 10 | #define UDP_ENCAP_KSYSLOG 16 |
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| 11 | |
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| 12 | enum ksyslog_facility { |
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| 13 | KSYSLOG_F_KERN, |
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| 14 | KSYSLOG_F_USER, |
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| 15 | KSYSLOG_F_MAIL, |
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| 16 | KSYSLOG_F_DAEMON, |
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| 17 | KSYSLOG_F_AUTH, |
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| 18 | KSYSLOG_F_SYSLOG, |
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| 19 | KSYSLOG_F_LPR, |
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| 20 | KSYSLOG_F_NEWS, |
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| 21 | KSYSLOG_F_UUCP, |
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| 22 | KSYSLOG_F_CRON, |
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| 23 | KSYSLOG_F_AUTHPRIV, |
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| 24 | KSYSLOG_F_FTP, |
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| 25 | KSYSLOG_F_NTP, |
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| 26 | KSYSLOG_F_AUDIT, |
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| 27 | KSYSLOG_F_ALERT, |
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| 28 | KSYSLOG_F_CRONPRIV, /* ? */ |
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| 29 | KSYSLOG_F_LOCAL0, |
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| 30 | KSYSLOG_F_LOCAL1, |
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| 31 | KSYSLOG_F_LOCAL2, |
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| 32 | KSYSLOG_F_LOCAL3, |
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| 33 | KSYSLOG_F_LOCAL4, |
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| 34 | KSYSLOG_F_LOCAL5, |
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| 35 | KSYSLOG_F_LOCAL6, |
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| 36 | KSYSLOG_F_LOCAL7, |
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| 37 | __KSYSLOG_F_MAX, |
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| 38 | }; |
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| 39 | |
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| 40 | enum ksyslog_severity { |
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| 41 | KSYSLOG_S_EMERG, |
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| 42 | KSYSLOG_S_ALERT, |
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| 43 | KSYSLOG_S_CRIT, |
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| 44 | KSYSLOG_S_ERR, |
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| 45 | KSYSLOG_S_WARN, |
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| 46 | KSYSLOG_S_NOTICE, |
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| 47 | KSYSLOG_S_INFO, |
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| 48 | KSYSLOG_S_DEBUG, |
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| 49 | __KSYSLOG_S_MAX, |
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| 50 | }; |
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| 51 | |
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| 52 | struct ksyslog_entry { |
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| 53 | struct list_head list; |
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[235] | 54 | struct timeval tv; |
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[232] | 55 | |
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[235] | 56 | unsigned long time; |
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| 57 | unsigned int priority; |
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[232] | 58 | enum ksyslog_facility facility; |
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| 59 | enum ksyslog_severity severity; |
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| 60 | |
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| 61 | union { |
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| 62 | __u8 addr8[4]; |
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| 63 | __be32 addr32; |
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| 64 | } daddr, saddr; |
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| 65 | |
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| 66 | __be16 dport, sport; |
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| 67 | |
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| 68 | size_t length; |
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| 69 | char *data; |
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| 70 | |
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| 71 | struct rcu_head rcu; |
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| 72 | }; |
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| 73 | |
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[250] | 74 | struct ksyslog_stats { |
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[271] | 75 | atomic64_t bytes; |
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| 76 | atomic64_t packets; |
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[250] | 77 | }; |
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| 78 | |
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[232] | 79 | struct ksyslog_queue { |
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| 80 | struct list_head head; |
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[271] | 81 | struct work_struct work; |
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[242] | 82 | spinlock_t lock; |
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[250] | 83 | atomic64_t size; |
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[271] | 84 | struct ksyslog_stats write_stats; |
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| 85 | struct ksyslog_stats drop_stats; |
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| 86 | struct ksyslog_stats discard_stats; |
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[232] | 87 | }; |
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| 88 | |
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[250] | 89 | static inline void |
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[271] | 90 | ksyslog_stats_zero(struct ksyslog_stats *stats) |
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[250] | 91 | { |
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[271] | 92 | atomic64_set(&stats->bytes, 0); |
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| 93 | atomic64_set(&stats->packets, 0); |
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[250] | 94 | } |
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| 95 | |
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| 96 | static inline void |
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[271] | 97 | ksyslog_stats_add(struct ksyslog_stats *stats, unsigned int len) |
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[250] | 98 | { |
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[271] | 99 | atomic64_add(len, &stats->bytes); |
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| 100 | atomic64_inc(&stats->packets); |
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[250] | 101 | } |
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| 102 | |
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[232] | 103 | static inline const char * |
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| 104 | ksyslog_facility_str(const enum ksyslog_facility facility) |
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| 105 | { |
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| 106 | switch (facility) { |
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| 107 | case KSYSLOG_F_KERN: return "kern"; |
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| 108 | case KSYSLOG_F_USER: return "user"; |
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| 109 | case KSYSLOG_F_MAIL: return "mail"; |
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| 110 | case KSYSLOG_F_DAEMON: return "daemon"; |
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| 111 | case KSYSLOG_F_AUTH: return "auth"; |
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| 112 | case KSYSLOG_F_SYSLOG: return "syslog"; |
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| 113 | case KSYSLOG_F_LPR: return "lpr"; |
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| 114 | case KSYSLOG_F_NEWS: return "news"; |
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| 115 | case KSYSLOG_F_UUCP: return "uucp"; |
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| 116 | case KSYSLOG_F_CRON: return "cron"; |
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| 117 | case KSYSLOG_F_AUTHPRIV: return "authpriv"; |
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| 118 | case KSYSLOG_F_FTP: return "ftp"; |
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| 119 | case KSYSLOG_F_NTP: return "ntp"; |
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| 120 | case KSYSLOG_F_AUDIT: return "audit"; |
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| 121 | case KSYSLOG_F_ALERT: return "alert"; |
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| 122 | case KSYSLOG_F_CRONPRIV: return "cronpriv"; |
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| 123 | case KSYSLOG_F_LOCAL0: return "local0"; |
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| 124 | case KSYSLOG_F_LOCAL1: return "local1"; |
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| 125 | case KSYSLOG_F_LOCAL2: return "local2"; |
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| 126 | case KSYSLOG_F_LOCAL3: return "local3"; |
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| 127 | case KSYSLOG_F_LOCAL4: return "local4"; |
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| 128 | case KSYSLOG_F_LOCAL5: return "local5"; |
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| 129 | case KSYSLOG_F_LOCAL6: return "local6"; |
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| 130 | case KSYSLOG_F_LOCAL7: return "local7"; |
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| 131 | default: return "unknown"; |
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| 132 | } |
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| 133 | } |
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| 134 | |
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| 135 | static inline const char * |
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| 136 | ksyslog_severity_str(const enum ksyslog_severity severity) |
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| 137 | { |
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| 138 | switch (severity) { |
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| 139 | case KSYSLOG_S_EMERG: return "emerg"; |
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| 140 | case KSYSLOG_S_ALERT: return "alert"; |
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| 141 | case KSYSLOG_S_CRIT: return "crit"; |
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| 142 | case KSYSLOG_S_ERR: return "err"; |
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| 143 | case KSYSLOG_S_WARN: return "warn"; |
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| 144 | case KSYSLOG_S_NOTICE: return "notice"; |
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| 145 | case KSYSLOG_S_INFO: return "info"; |
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| 146 | case KSYSLOG_S_DEBUG: return "debug"; |
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| 147 | default: return "unknown"; |
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| 148 | } |
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| 149 | } |
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| 150 | |
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[236] | 151 | static inline unsigned int |
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[235] | 152 | ksyslog_month_num(const char *month) |
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| 153 | { |
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[249] | 154 | const u32 m = *((u32 *)month); |
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| 155 | |
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| 156 | if (m == *((u32 *)"Jan")) |
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[235] | 157 | return 1; |
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[249] | 158 | else if (m == *((u32 *)"Feb")) |
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[235] | 159 | return 2; |
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[249] | 160 | else if (m == *((u32 *)"Mar")) |
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[235] | 161 | return 3; |
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[249] | 162 | else if (m == *((u32 *)"Apr")) |
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[235] | 163 | return 4; |
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[249] | 164 | else if (m == *((u32 *)"May")) |
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[235] | 165 | return 5; |
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[249] | 166 | else if (m == *((u32 *)"Jun")) |
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[235] | 167 | return 6; |
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[249] | 168 | else if (m == *((u32 *)"Jul")) |
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[235] | 169 | return 7; |
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[249] | 170 | else if (m == *((u32 *)"Aug")) |
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[235] | 171 | return 8; |
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[249] | 172 | else if (m == *((u32 *)"Sep")) |
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[235] | 173 | return 9; |
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[249] | 174 | else if (m == *((u32 *)"Oct")) |
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[235] | 175 | return 10; |
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[249] | 176 | else if (m == *((u32 *)"Nov")) |
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[235] | 177 | return 11; |
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[249] | 178 | else if (m == *((u32 *)"Dec")) |
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[235] | 179 | return 12; |
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[249] | 180 | return 0; |
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[235] | 181 | } |
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| 182 | |
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[232] | 183 | #endif |
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