53e1b68390
This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2016 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#pragma once
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#include <stddef.h>
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#include <stdbool.h>
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#include <sys/uio.h>
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#include "time-util.h"
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/* Make sure not to make this smaller than the maximum coredump size.
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* See COREDUMP_MAX in coredump.c */
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#define ENTRY_SIZE_MAX (1024*1024*770u)
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#define DATA_SIZE_MAX (1024*1024*768u)
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#define LINE_CHUNK 8*1024u
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struct iovec_wrapper {
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struct iovec *iovec;
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size_t size_bytes;
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size_t count;
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};
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size_t iovw_size(struct iovec_wrapper *iovw);
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typedef struct JournalImporter {
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int fd;
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bool passive_fd;
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char *name;
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char *buf;
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size_t size; /* total size of the buffer */
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size_t offset; /* offset to the beginning of live data in the buffer */
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size_t scanned; /* number of bytes since the beginning of data without a newline */
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size_t filled; /* total number of bytes in the buffer */
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size_t field_len; /* used for binary fields: the field name length */
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size_t data_size; /* and the size of the binary data chunk being processed */
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struct iovec_wrapper iovw;
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int state;
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dual_timestamp ts;
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} JournalImporter;
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void journal_importer_cleanup(JournalImporter *);
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int journal_importer_process_data(JournalImporter *);
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int journal_importer_push_data(JournalImporter *, const char *data, size_t size);
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void journal_importer_drop_iovw(JournalImporter *);
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bool journal_importer_eof(const JournalImporter *);
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static inline size_t journal_importer_bytes_remaining(const JournalImporter *imp) {
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return imp->filled;
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}
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