src/basic/journal-importer.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #pragma once
   4
   5 #include <stddef.h>
   6 #include <stdbool.h>
   7 #include <sys/uio.h>
   8
   9 #include "sd-id128.h"
  10
  11 #include "time-util.h"
  12
  13 /* Make sure not to make this smaller than the maximum coredump size.
  14  * See COREDUMP_MAX in coredump.c */
  15 #define ENTRY_SIZE_MAX (1024*1024*770u)
  16 #define DATA_SIZE_MAX (1024*1024*768u)
  17 #define LINE_CHUNK 8*1024u
  18
  19 struct iovec_wrapper {
  20         struct iovec *iovec;
  21         size_t size_bytes;
  22         size_t count;
  23 };
  24
  25 size_t iovw_size(struct iovec_wrapper *iovw);
  26
  27 typedef struct JournalImporter {
  28         int fd;
  29         bool passive_fd;
  30         char *name;
  31
  32         char *buf;
  33         size_t size;       /* total size of the buffer */
  34         size_t offset;     /* offset to the beginning of live data in the buffer */
  35         size_t scanned;    /* number of bytes since the beginning of data without a newline */
  36         size_t filled;     /* total number of bytes in the buffer */
  37
  38         size_t field_len;  /* used for binary fields: the field name length */
  39         size_t data_size;  /* and the size of the binary data chunk being processed */
  40
  41         struct iovec_wrapper iovw;
  42
  43         int state;
  44         dual_timestamp ts;
  45         sd_id128_t boot_id;
  46 } JournalImporter;
  47
  48 void journal_importer_cleanup(JournalImporter *);
  49 int journal_importer_process_data(JournalImporter *);
  50 int journal_importer_push_data(JournalImporter *, const char *data, size_t size);
  51 void journal_importer_drop_iovw(JournalImporter *);
  52 bool journal_importer_eof(const JournalImporter *);
  53
  54 static inline size_t journal_importer_bytes_remaining(const JournalImporter *imp) {
  55         return imp->filled;
  56 }