1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
7 This file is part of systemd.
9 Copyright 2011 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU Lesser General Public License as published by
13 the Free Software Foundation; either version 2.1 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Lesser General Public License for more details.
21 You should have received a copy of the GNU Lesser General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/types.h>
31 #include <systemd/sd-id128.h>
37 #ifndef _sd_printf_attr_
39 # define _sd_printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
41 # define _sd_printf_attr_(a,b)
45 #ifndef _sd_sentinel_attr_
46 # define _sd_sentinel_attr_ __attribute__((sentinel))
49 /* Journal APIs. See sd-journal(3) for more information. */
52 int sd_journal_print(int priority, const char *format, ...) _sd_printf_attr_(2, 3);
53 int sd_journal_printv(int priority, const char *format, va_list ap) _sd_printf_attr_(2, 0);
54 int sd_journal_send(const char *format, ...) _sd_printf_attr_(1, 0) _sd_sentinel_attr_;
55 int sd_journal_sendv(const struct iovec *iov, int n);
56 int sd_journal_perror(const char *message);
58 /* Used by the macros below. Don't call this directly. */
59 int sd_journal_print_with_location(int priority, const char *file, const char *line, const char *func, const char *format, ...) _sd_printf_attr_(5, 6);
60 int sd_journal_printv_with_location(int priority, const char *file, const char *line, const char *func, const char *format, va_list ap) _sd_printf_attr_(5, 0);
61 int sd_journal_send_with_location(const char *file, const char *line, const char *func, const char *format, ...) _sd_printf_attr_(4, 0) _sd_sentinel_attr_;
62 int sd_journal_sendv_with_location(const char *file, const char *line, const char *func, const struct iovec *iov, int n);
63 int sd_journal_perror_with_location(const char *file, const char *line, const char *func, const char *message);
65 /* implicitly add code location to messages sent, if this is enabled */
66 #ifndef SD_JOURNAL_SUPPRESS_LOCATION
68 #define _sd_XSTRINGIFY(x) #x
69 #define _sd_STRINGIFY(x) _sd_XSTRINGIFY(x)
71 #define sd_journal_print(priority, ...) sd_journal_print_with_location(priority, "CODE_FILE=" __FILE__, "CODE_LINE=" _sd_STRINGIFY(__LINE__), __func__, __VA_ARGS__)
72 #define sd_journal_printv(priority, format, ap) sd_journal_printv_with_location(priority, "CODE_FILE=" __FILE__, "CODE_LINE=" _sd_STRINGIFY(__LINE__), __func__, format, ap)
73 #define sd_journal_send(...) sd_journal_send_with_location("CODE_FILE=" __FILE__, "CODE_LINE=" _sd_STRINGIFY(__LINE__), __func__, __VA_ARGS__)
74 #define sd_journal_sendv(iovec, n) sd_journal_sendv_with_location("CODE_FILE=" __FILE__, "CODE_LINE=" _sd_STRINGIFY(__LINE__), __func__, iovec, n)
75 #define sd_journal_perror(message) sd_journal_perror_with_location("CODE_FILE=" __FILE__, "CODE_LINE=" _sd_STRINGIFY(__LINE__), __func__, message)
79 int sd_journal_stream_fd(const char *identifier, int priority, int level_prefix);
81 /* Browse journal stream */
83 typedef struct sd_journal sd_journal;
87 SD_JOURNAL_LOCAL_ONLY = 1,
88 SD_JOURNAL_RUNTIME_ONLY = 2,
89 SD_JOURNAL_SYSTEM = 4,
90 SD_JOURNAL_CURRENT_USER = 8,
92 SD_JOURNAL_SYSTEM_ONLY = SD_JOURNAL_SYSTEM, /* deprecated name */
95 /* Wakeup event types */
102 int sd_journal_open(sd_journal **ret, int flags);
103 int sd_journal_open_directory(sd_journal **ret, const char *path, int flags);
104 int sd_journal_open_files(sd_journal **ret, const char **paths, int flags);
105 void sd_journal_close(sd_journal *j);
107 int sd_journal_previous(sd_journal *j);
108 int sd_journal_next(sd_journal *j);
110 int sd_journal_previous_skip(sd_journal *j, uint64_t skip);
111 int sd_journal_next_skip(sd_journal *j, uint64_t skip);
113 int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret);
114 int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id);
116 int sd_journal_set_data_threshold(sd_journal *j, size_t sz);
117 int sd_journal_get_data_threshold(sd_journal *j, size_t *sz);
119 int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *l);
120 int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *l);
121 void sd_journal_restart_data(sd_journal *j);
123 int sd_journal_add_match(sd_journal *j, const void *data, size_t size);
124 int sd_journal_add_disjunction(sd_journal *j);
125 int sd_journal_add_conjunction(sd_journal *j);
126 void sd_journal_flush_matches(sd_journal *j);
128 int sd_journal_seek_head(sd_journal *j);
129 int sd_journal_seek_tail(sd_journal *j);
130 int sd_journal_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec);
131 int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec);
132 int sd_journal_seek_cursor(sd_journal *j, const char *cursor);
134 int sd_journal_get_cursor(sd_journal *j, char **cursor);
135 int sd_journal_test_cursor(sd_journal *j, const char *cursor);
137 int sd_journal_get_cutoff_realtime_usec(sd_journal *j, uint64_t *from, uint64_t *to);
138 int sd_journal_get_cutoff_monotonic_usec(sd_journal *j, const sd_id128_t boot_id, uint64_t *from, uint64_t *to);
140 int sd_journal_get_usage(sd_journal *j, uint64_t *bytes);
142 int sd_journal_query_unique(sd_journal *j, const char *field);
143 int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l);
144 void sd_journal_restart_unique(sd_journal *j);
146 int sd_journal_get_fd(sd_journal *j);
147 int sd_journal_get_events(sd_journal *j);
148 int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec);
149 int sd_journal_process(sd_journal *j);
150 int sd_journal_wait(sd_journal *j, uint64_t timeout_usec);
151 int sd_journal_reliable_fd(sd_journal *j);
153 int sd_journal_get_catalog(sd_journal *j, char **text);
154 int sd_journal_get_catalog_for_message_id(sd_id128_t id, char **ret);
156 #define SD_JOURNAL_FOREACH(j) \
157 if (sd_journal_seek_head(j) >= 0) \
158 while (sd_journal_next(j) > 0)
160 #define SD_JOURNAL_FOREACH_BACKWARDS(j) \
161 if (sd_journal_seek_tail(j) >= 0) \
162 while (sd_journal_previous(j) > 0)
164 #define SD_JOURNAL_FOREACH_DATA(j, data, l) \
165 for (sd_journal_restart_data(j); sd_journal_enumerate_data((j), &(data), &(l)) > 0; )
167 #define SD_JOURNAL_FOREACH_UNIQUE(j, data, l) \
168 for (sd_journal_restart_unique(j); sd_journal_enumerate_unique((j), &(data), &(l)) > 0; )