Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "journal-def.h"
#include "journal-file.h"
#include "lookup3.h"
-
-#define DEFAULT_ARENA_MAX_SIZE (16ULL*1024ULL*1024ULL*1024ULL)
-#define DEFAULT_ARENA_MIN_SIZE (256ULL*1024ULL)
-#define DEFAULT_ARENA_KEEP_FREE (1ULL*1024ULL*1024ULL)
-
-#define DEFAULT_MAX_USE (16ULL*1024ULL*1024ULL*16ULL)
+#include "compress.h"
#define DEFAULT_DATA_HASH_TABLE_SIZE (2047ULL*16ULL)
#define DEFAULT_FIELD_HASH_TABLE_SIZE (2047ULL*16ULL)
-#define DEFAULT_WINDOW_SIZE (128ULL*1024ULL*1024ULL)
+#define DEFAULT_WINDOW_SIZE (8ULL*1024ULL*1024ULL)
+
+#define COMPRESSION_SIZE_THRESHOLD (512ULL)
+
+/* This is the minimum journal file size */
+#define JOURNAL_FILE_SIZE_MIN (64ULL*1024ULL) /* 64 KiB */
+
+/* These are the lower and upper bounds if we deduce the max_use value
+ * from the file system size */
+#define DEFAULT_MAX_USE_LOWER (1ULL*1024ULL*1024ULL) /* 1 MiB */
+#define DEFAULT_MAX_USE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */
+
+/* This is the upper bound if we deduce max_size from max_use */
+#define DEFAULT_MAX_SIZE_UPPER (128ULL*1024ULL*1024ULL) /* 128 MiB */
+
+/* This is the upper bound if we deduce the keep_free value from the
+ * file system size */
+#define DEFAULT_KEEP_FREE_UPPER (4ULL*1024ULL*1024ULL*1024ULL) /* 4 GiB */
+
+/* This is the keep_free value when we can't determine the system
+ * size */
+#define DEFAULT_KEEP_FREE (1024ULL*1024ULL) /* 1 MB */
static const char signature[] = { 'L', 'P', 'K', 'S', 'H', 'H', 'R', 'H' };
close_nointr_nofail(f->fd);
free(f->path);
+
+#ifdef HAVE_XZ
+ free(f->compress_buffer);
+#endif
+
free(f);
}
zero(h);
memcpy(h.signature, signature, 8);
h.arena_offset = htole64(ALIGN64(sizeof(h)));
- h.arena_max_size = htole64(DEFAULT_ARENA_MAX_SIZE);
- h.arena_min_size = htole64(DEFAULT_ARENA_MIN_SIZE);
- h.arena_keep_free = htole64(DEFAULT_ARENA_KEEP_FREE);
r = sd_id128_randomize(&h.file_id);
if (r < 0)
f->header->boot_id = boot_id;
f->header->state = STATE_ONLINE;
+
+ __sync_synchronize();
+
return 0;
}
if (memcmp(f->header, signature, 8))
return -EBADMSG;
+#ifdef HAVE_XZ
+ if ((le64toh(f->header->incompatible_flags) & ~HEADER_INCOMPATIBLE_COMPRESSED) != 0)
+ return -EPROTONOSUPPORT;
+#else
if (f->header->incompatible_flags != 0)
return -EPROTONOSUPPORT;
+#endif
if ((uint64_t) f->last_stat.st_size < (le64toh(f->header->arena_offset) + le64toh(f->header->arena_size)))
return -ENODATA;
if (f->writable) {
- uint32_t state;
+ uint8_t state;
sd_id128_t machine_id;
int r;
}
static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size) {
- uint64_t asize;
uint64_t old_size, new_size;
assert(f);
- if (offset < le64toh(f->header->arena_offset))
- return -EINVAL;
-
- new_size = PAGE_ALIGN(offset + size);
-
/* We assume that this file is not sparse, and we know that
* for sure, since we always call posix_fallocate()
* ourselves */
le64toh(f->header->arena_offset) +
le64toh(f->header->arena_size);
- if (old_size >= new_size)
+ new_size = PAGE_ALIGN(offset + size);
+ if (new_size < le64toh(f->header->arena_offset))
+ new_size = le64toh(f->header->arena_offset);
+
+ if (new_size <= old_size)
return 0;
- asize = new_size - le64toh(f->header->arena_offset);
+ if (f->metrics.max_size > 0 &&
+ new_size > f->metrics.max_size)
+ return -E2BIG;
- if (asize > le64toh(f->header->arena_min_size)) {
+ if (new_size > f->metrics.min_size &&
+ f->metrics.keep_free > 0) {
struct statvfs svfs;
if (fstatvfs(f->fd, &svfs) >= 0) {
available = svfs.f_bfree * svfs.f_bsize;
- if (available >= f->header->arena_keep_free)
- available -= f->header->arena_keep_free;
+ if (available >= f->metrics.keep_free)
+ available -= f->metrics.keep_free;
else
available = 0;
}
}
- if (asize > le64toh(f->header->arena_max_size))
- return -E2BIG;
-
+ /* Note that the glibc fallocate() fallback is very
+ inefficient, hence we try to minimize the allocation area
+ as we can. */
if (posix_fallocate(f->fd, old_size, new_size - old_size) < 0)
return -errno;
if (fstat(f->fd, &f->last_stat) < 0)
return -errno;
- f->header->arena_size = htole64(asize);
+ f->header->arena_size = htole64(new_size - le64toh(f->header->arena_offset));
return 0;
}
wsize = size + (offset - woffset);
wsize = PAGE_ALIGN(wsize);
+ /* Avoid SIGBUS on invalid accesses */
+ if (woffset + wsize > (uint64_t) PAGE_ALIGN(f->last_stat.st_size))
+ return -EADDRNOTAVAIL;
+
window = mmap(NULL, wsize, f->prot, MAP_SHARED, f->fd, woffset);
if (window == MAP_FAILED)
return -errno;
}
static int journal_file_move_to(JournalFile *f, int wt, uint64_t offset, uint64_t size, void **ret) {
- void *p;
+ void *p = NULL;
uint64_t delta;
int r;
Window *w;
assert(wt >= 0);
assert(wt < _WINDOW_MAX);
+ if (offset + size > (uint64_t) f->last_stat.st_size) {
+ /* Hmm, out of range? Let's refresh the fstat() data
+ * first, before we trust that check. */
+
+ if (fstat(f->fd, &f->last_stat) < 0 ||
+ offset + size > (uint64_t) f->last_stat.st_size)
+ return -EADDRNOTAVAIL;
+ }
+
w = f->windows + wt;
if (_likely_(w->ptr &&
* the window space before and half behind the
* requested mapping */
- delta = PAGE_ALIGN((DEFAULT_WINDOW_SIZE - size) / 2);
+ delta = (DEFAULT_WINDOW_SIZE - size) / 2;
- if (offset < delta)
+ if (delta > offset)
delta = offset;
offset -= delta;
- size += (DEFAULT_WINDOW_SIZE - delta);
+ size = DEFAULT_WINDOW_SIZE;
} else
delta = 0;
+ if (offset + size > (uint64_t) f->last_stat.st_size)
+ size = (uint64_t) f->last_stat.st_size - offset;
+
+ if (size <= 0)
+ return -EADDRNOTAVAIL;
+
r = journal_file_map(f,
offset, size,
&w->ptr, &w->offset, &w->size,
assert(o);
- if (o->object.type == OBJECT_DATA) {
+ if (o->object.type == OBJECT_DATA && !(o->object.flags & OBJECT_COMPRESSED)) {
h1 = le64toh(o->data.hash);
h2 = hash64(o->data.payload, le64toh(o->object.size) - offsetof(Object, data.payload));
} else if (o->object.type == OBJECT_FIELD) {
assert(offset > 0);
assert(o->object.type == OBJECT_DATA);
+ /* This might alter the window we are looking at */
+
o->data.next_hash_offset = o->data.next_field_offset = 0;
o->data.entry_offset = o->data.entry_array_offset = 0;
o->data.n_entries = 0;
/* Only entry in the hash table is easy */
f->data_hash_table[h].head_hash_offset = htole64(offset);
} else {
- /* Temporarily move back to the previous data object,
- * to patch in pointer */
+ /* Move back to the previous data object, to patch in
+ * pointer */
r = journal_file_move_to_object(f, OBJECT_DATA, p, &o);
if (r < 0)
return r;
o->data.next_hash_offset = htole64(offset);
-
- r = journal_file_move_to_object(f, OBJECT_DATA, offset, &o);
- if (r < 0)
- return r;
}
f->data_hash_table[h].tail_hash_offset = htole64(offset);
JournalFile *f,
const void *data, uint64_t size, uint64_t hash,
Object **ret, uint64_t *offset) {
+
uint64_t p, osize, h;
int r;
osize = offsetof(Object, data.payload) + size;
+ if (f->header->data_hash_table_size == 0)
+ return -EBADMSG;
+
h = hash % (le64toh(f->header->data_hash_table_size) / sizeof(HashItem));
p = le64toh(f->data_hash_table[h].head_hash_offset);
if (r < 0)
return r;
- if (le64toh(o->object.size) == osize &&
- memcmp(o->data.payload, data, size) == 0) {
+ if (le64toh(o->data.hash) != hash)
+ goto next;
+
+ if (o->object.flags & OBJECT_COMPRESSED) {
+#ifdef HAVE_XZ
+ uint64_t l, rsize;
+
+ l = le64toh(o->object.size);
+ if (l <= offsetof(Object, data.payload))
+ return -EBADMSG;
+
+ l -= offsetof(Object, data.payload);
- if (le64toh(o->data.hash) != hash)
+ if (!uncompress_blob(o->data.payload, l, &f->compress_buffer, &f->compress_buffer_size, &rsize))
return -EBADMSG;
+ if (rsize == size &&
+ memcmp(f->compress_buffer, data, size) == 0) {
+
+ if (ret)
+ *ret = o;
+
+ if (offset)
+ *offset = p;
+
+ return 1;
+ }
+#else
+ return -EPROTONOSUPPORT;
+#endif
+
+ } else if (le64toh(o->object.size) == osize &&
+ memcmp(o->data.payload, data, size) == 0) {
+
if (ret)
*ret = o;
return 1;
}
+ next:
p = le64toh(o->data.next_hash_offset);
}
ret, offset);
}
-static int journal_file_append_data(JournalFile *f, const void *data, uint64_t size, Object **ret, uint64_t *offset) {
+static int journal_file_append_data(
+ JournalFile *f,
+ const void *data, uint64_t size,
+ Object **ret, uint64_t *offset) {
+
uint64_t hash, p;
uint64_t osize;
Object *o;
int r;
+ bool compressed = false;
assert(f);
assert(data || size == 0);
return r;
o->data.hash = htole64(hash);
- memcpy(o->data.payload, data, size);
+
+#ifdef HAVE_XZ
+ if (f->compress &&
+ size >= COMPRESSION_SIZE_THRESHOLD) {
+ uint64_t rsize;
+
+ compressed = compress_blob(data, size, o->data.payload, &rsize);
+
+ if (compressed) {
+ o->object.size = htole64(offsetof(Object, data.payload) + rsize);
+ o->object.flags |= OBJECT_COMPRESSED;
+
+ f->header->incompatible_flags = htole32(le32toh(f->header->incompatible_flags) | HEADER_INCOMPATIBLE_COMPRESSED);
+
+ log_debug("Compressed data object %lu -> %lu", (unsigned long) size, (unsigned long) rsize);
+ }
+ }
+#endif
+
+ if (!compressed)
+ memcpy(o->data.payload, data, size);
r = journal_file_link_data(f, o, p, hash);
if (r < 0)
return r;
+ /* The linking might have altered the window, so let's
+ * refresh our pointer */
+ r = journal_file_move_to_object(f, OBJECT_DATA, p, &o);
+ if (r < 0)
+ return r;
+
if (ret)
*ret = o;
uint64_t journal_file_entry_n_items(Object *o) {
assert(o);
- assert(o->object.type == htole64(OBJECT_ENTRY));
+ assert(o->object.type == OBJECT_ENTRY);
return (le64toh(o->object.size) - offsetof(Object, entry.items)) / sizeof(EntryItem);
}
static uint64_t journal_file_entry_array_n_items(Object *o) {
assert(o);
- assert(o->object.type == htole64(OBJECT_ENTRY_ARRAY));
+ assert(o->object.type == OBJECT_ENTRY_ARRAY);
return (le64toh(o->object.size) - offsetof(Object, entry_array.items)) / sizeof(uint64_t);
}
static int link_entry_into_array(JournalFile *f,
- uint64_t *first,
- uint64_t *idx,
+ le64_t *first,
+ le64_t *idx,
uint64_t p) {
int r;
uint64_t n = 0, ap = 0, q, i, a, hidx;
o->entry_array.items[i] = htole64(p);
if (ap == 0)
- *first = q;
+ *first = htole64(q);
else {
r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, ap, &o);
if (r < 0)
}
static int link_entry_into_array_plus_one(JournalFile *f,
- uint64_t *extra,
- uint64_t *first,
- uint64_t *idx,
+ le64_t *extra,
+ le64_t *first,
+ le64_t *idx,
uint64_t p) {
int r;
if (*idx == 0)
*extra = htole64(p);
else {
- uint64_t i;
+ le64_t i;
- i = le64toh(*idx) - 1;
+ i = htole64(le64toh(*idx) - 1);
r = link_entry_into_array(f, first, &i, p);
if (r < 0)
return r;
assert(offset > 0);
assert(o->object.type == OBJECT_ENTRY);
+ __sync_synchronize();
+
/* Link up the entry itself */
r = link_entry_into_array(f,
&f->header->entry_array_offset,
if (r < 0)
return r;
- log_error("%s %lu", f->path, (unsigned long) f->header->n_entries);
+ /* log_debug("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (unsigned long) f->header->n_entries); */
if (f->header->head_entry_realtime == 0)
f->header->head_entry_realtime = o->entry.realtime;
return 0;
}
-static void journal_file_post_change(JournalFile *f) {
+void journal_file_post_change(JournalFile *f) {
assert(f);
/* inotify() does not receive IN_MODIFY events from file
* trigger IN_MODIFY by truncating the journal file to its
* current size which triggers IN_MODIFY. */
+ __sync_synchronize();
+
if (ftruncate(f->fd, f->last_stat.st_size) < 0)
log_error("Failed to to truncate file to its own size: %m");
}
ts->monotonic < le64toh(f->header->tail_entry_monotonic))
return -EINVAL;
- if (ts->realtime < le64toh(f->header->tail_entry_realtime))
- return -EINVAL;
-
- items = new(EntryItem, n_iovec);
- if (!items)
- return -ENOMEM;
+ items = alloca(sizeof(EntryItem) * n_iovec);
for (i = 0; i < n_iovec; i++) {
uint64_t p;
r = journal_file_append_data(f, iovec[i].iov_base, iovec[i].iov_len, &o, &p);
if (r < 0)
- goto finish;
+ return r;
xor_hash ^= le64toh(o->data.hash);
items[i].object_offset = htole64(p);
journal_file_post_change(f);
-finish:
- free(items);
-
return r;
}
Object **ret, uint64_t *offset) {
Object *o;
- uint64_t p, a;
+ uint64_t p = 0, a;
int r;
assert(f);
/* This bisects the array in object 'first', but first checks
* an extra */
-
r = test_object(f, extra, needle);
if (r < 0)
return r;
if (offset)
*offset = extra;
+
+ if (idx)
+ *idx = 0;
+
+ return 1;
} else if (r == TEST_RIGHT)
return 0;
break;
}
+ if (o->object.flags & OBJECT_COMPRESSED)
+ printf("Flags: COMPRESSED\n");
+
if (p == le64toh(f->header->tail_object_offset))
p = 0;
else
(flags & O_ACCMODE) != O_RDWR)
return -EINVAL;
+ if (!endswith(fname, ".journal"))
+ return -EINVAL;
+
f = new0(JournalFile, 1);
if (!f)
return -ENOMEM;
f->writable = (flags & O_ACCMODE) != O_RDONLY;
f->prot = prot_from_flags(flags);
+ if (template) {
+ f->metrics = template->metrics;
+ f->compress = template->compress;
+ }
+
f->path = strdup(fname);
if (!f->path) {
r = -ENOMEM;
l = strlen(old_file->path);
- p = new(char, l + 1 + 16 + 1 + 32 + 1 + 16 + 1);
+ p = new(char, l + 1 + 32 + 1 + 16 + 1 + 16 + 1);
if (!p)
return -ENOMEM;
if (r < 0)
return -errno;
- old_file->header->state = le32toh(STATE_ARCHIVED);
+ old_file->header->state = STATE_ARCHIVED;
r = journal_file_open(old_file->path, old_file->flags, old_file->mode, old_file, &new_file);
journal_file_close(old_file);
return r;
}
+int journal_file_open_reliably(
+ const char *fname,
+ int flags,
+ mode_t mode,
+ JournalFile *template,
+ JournalFile **ret) {
+
+ int r;
+ size_t l;
+ char *p;
+
+ r = journal_file_open(fname, flags, mode, template, ret);
+ if (r != -EBADMSG && /* corrupted */
+ r != -ENODATA && /* truncated */
+ r != -EHOSTDOWN && /* other machine */
+ r != -EPROTONOSUPPORT) /* incompatible feature */
+ return r;
+
+ if ((flags & O_ACCMODE) == O_RDONLY)
+ return r;
+
+ if (!(flags & O_CREAT))
+ return r;
+
+ /* The file is corrupted. Rotate it away and try it again (but only once) */
+
+ l = strlen(fname);
+ if (asprintf(&p, "%.*s@%016llx-%016llx.journal~",
+ (int) (l-8), fname,
+ (unsigned long long) now(CLOCK_REALTIME),
+ random_ull()) < 0)
+ return -ENOMEM;
+
+ r = rename(fname, p);
+ free(p);
+ if (r < 0)
+ return -errno;
+
+ log_warning("File %s corrupted, renaming and replacing.", fname);
+
+ return journal_file_open(fname, flags, mode, template, ret);
+}
+
struct vacuum_info {
off_t usage;
char *filename;
uint64_t realtime;
sd_id128_t seqnum_id;
uint64_t seqnum;
+
+ bool have_seqnum;
};
static int vacuum_compare(const void *_a, const void *_b) {
a = _a;
b = _b;
- if (sd_id128_equal(a->seqnum_id, b->seqnum_id)) {
+ if (a->have_seqnum && b->have_seqnum &&
+ sd_id128_equal(a->seqnum_id, b->seqnum_id)) {
if (a->seqnum < b->seqnum)
return -1;
else if (a->seqnum > b->seqnum)
return -1;
else if (a->realtime > b->realtime)
return 1;
- else
+ else if (a->have_seqnum && b->have_seqnum)
return memcmp(&a->seqnum_id, &b->seqnum_id, 16);
+ else
+ return strcmp(a->filename, b->filename);
}
int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t min_free) {
assert(directory);
if (max_use <= 0)
- max_use = DEFAULT_MAX_USE;
+ return 0;
d = opendir(directory);
if (!d)
size_t q;
struct stat st;
char *p;
- unsigned long long seqnum, realtime;
+ unsigned long long seqnum = 0, realtime;
sd_id128_t seqnum_id;
+ bool have_seqnum;
k = readdir_r(d, &buf, &de);
if (k != 0) {
if (!de)
break;
- if (!dirent_is_file_with_suffix(de, ".journal"))
+ if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
+ continue;
+
+ if (!S_ISREG(st.st_mode))
continue;
q = strlen(de->d_name);
- if (q < 1 + 32 + 1 + 16 + 1 + 16 + 8)
- continue;
+ if (endswith(de->d_name, ".journal")) {
- if (de->d_name[q-8-16-1] != '-' ||
- de->d_name[q-8-16-1-16-1] != '-' ||
- de->d_name[q-8-16-1-16-1-32-1] != '@')
- continue;
+ /* Vacuum archived files */
- if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
- continue;
+ if (q < 1 + 32 + 1 + 16 + 1 + 16 + 8)
+ continue;
- if (!S_ISREG(st.st_mode))
- continue;
+ if (de->d_name[q-8-16-1] != '-' ||
+ de->d_name[q-8-16-1-16-1] != '-' ||
+ de->d_name[q-8-16-1-16-1-32-1] != '@')
+ continue;
- p = strdup(de->d_name);
- if (!p) {
- r = -ENOMEM;
- goto finish;
- }
+ p = strdup(de->d_name);
+ if (!p) {
+ r = -ENOMEM;
+ goto finish;
+ }
- de->d_name[q-8-16-1-16-1] = 0;
- if (sd_id128_from_string(de->d_name + q-8-16-1-16-1-32, &seqnum_id) < 0) {
- free(p);
- continue;
- }
+ de->d_name[q-8-16-1-16-1] = 0;
+ if (sd_id128_from_string(de->d_name + q-8-16-1-16-1-32, &seqnum_id) < 0) {
+ free(p);
+ continue;
+ }
+
+ if (sscanf(de->d_name + q-8-16-1-16, "%16llx-%16llx.journal", &seqnum, &realtime) != 2) {
+ free(p);
+ continue;
+ }
- if (sscanf(de->d_name + q-8-16-1-16, "%16llx-%16llx.journal", &seqnum, &realtime) != 2) {
- free(p);
+ have_seqnum = true;
+
+ } else if (endswith(de->d_name, ".journal~")) {
+ unsigned long long tmp;
+
+ /* Vacuum corrupted files */
+
+ if (q < 1 + 16 + 1 + 16 + 8 + 1)
+ continue;
+
+ if (de->d_name[q-1-8-16-1] != '-' ||
+ de->d_name[q-1-8-16-1-16-1] != '@')
+ continue;
+
+ p = strdup(de->d_name);
+ if (!p) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (sscanf(de->d_name + q-1-8-16-1-16, "%16llx-%16llx.journal~", &realtime, &tmp) != 2) {
+ free(p);
+ continue;
+ }
+
+ have_seqnum = false;
+ } else
continue;
- }
if (n_list >= n_allocated) {
struct vacuum_info *j;
}
list[n_list].filename = p;
- list[n_list].usage = (uint64_t) st.st_blksize * (uint64_t) st.st_blocks;
+ list[n_list].usage = 512UL * (uint64_t) st.st_blocks;
list[n_list].seqnum = seqnum;
list[n_list].realtime = realtime;
list[n_list].seqnum_id = seqnum_id;
+ list[n_list].have_seqnum = have_seqnum;
sum += list[n_list].usage;
break;
if (unlinkat(dirfd(d), list[i].filename, 0) >= 0) {
- log_debug("Deleted archived journal %s/%s.", directory, list[i].filename);
+ log_info("Deleted archived journal %s/%s.", directory, list[i].filename);
sum -= list[i].usage;
} else if (errno != ENOENT)
log_warning("Failed to delete %s/%s: %m", directory, list[i].filename);
return r;
}
+
+int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset) {
+ uint64_t i, n;
+ uint64_t q, xor_hash = 0;
+ int r;
+ EntryItem *items;
+ dual_timestamp ts;
+
+ assert(from);
+ assert(to);
+ assert(o);
+ assert(p);
+
+ if (!to->writable)
+ return -EPERM;
+
+ ts.monotonic = le64toh(o->entry.monotonic);
+ ts.realtime = le64toh(o->entry.realtime);
+
+ if (to->tail_entry_monotonic_valid &&
+ ts.monotonic < le64toh(to->header->tail_entry_monotonic))
+ return -EINVAL;
+
+ if (ts.realtime < le64toh(to->header->tail_entry_realtime))
+ return -EINVAL;
+
+ n = journal_file_entry_n_items(o);
+ items = alloca(sizeof(EntryItem) * n);
+
+ for (i = 0; i < n; i++) {
+ uint64_t l, h;
+ le64_t le_hash;
+ size_t t;
+ void *data;
+ Object *u;
+
+ q = le64toh(o->entry.items[i].object_offset);
+ le_hash = o->entry.items[i].hash;
+
+ r = journal_file_move_to_object(from, OBJECT_DATA, q, &o);
+ if (r < 0)
+ return r;
+
+ if (le_hash != o->data.hash)
+ return -EBADMSG;
+
+ l = le64toh(o->object.size) - offsetof(Object, data.payload);
+ t = (size_t) l;
+
+ /* We hit the limit on 32bit machines */
+ if ((uint64_t) t != l)
+ return -E2BIG;
+
+ if (o->object.flags & OBJECT_COMPRESSED) {
+#ifdef HAVE_XZ
+ uint64_t rsize;
+
+ if (!uncompress_blob(o->data.payload, l, &from->compress_buffer, &from->compress_buffer_size, &rsize))
+ return -EBADMSG;
+
+ data = from->compress_buffer;
+ l = rsize;
+#else
+ return -EPROTONOSUPPORT;
+#endif
+ } else
+ data = o->data.payload;
+
+ r = journal_file_append_data(to, data, l, &u, &h);
+ if (r < 0)
+ return r;
+
+ xor_hash ^= le64toh(u->data.hash);
+ items[i].object_offset = htole64(h);
+ items[i].hash = u->data.hash;
+
+ r = journal_file_move_to_object(from, OBJECT_ENTRY, p, &o);
+ if (r < 0)
+ return r;
+ }
+
+ return journal_file_append_entry_internal(to, &ts, xor_hash, items, n, seqnum, ret, offset);
+}
+
+void journal_default_metrics(JournalMetrics *m, int fd) {
+ uint64_t fs_size = 0;
+ struct statvfs ss;
+ char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX];
+
+ assert(m);
+ assert(fd >= 0);
+
+ if (fstatvfs(fd, &ss) >= 0)
+ fs_size = ss.f_frsize * ss.f_blocks;
+
+ if (m->max_use == (uint64_t) -1) {
+
+ if (fs_size > 0) {
+ m->max_use = PAGE_ALIGN(fs_size / 10); /* 10% of file system size */
+
+ if (m->max_use > DEFAULT_MAX_USE_UPPER)
+ m->max_use = DEFAULT_MAX_USE_UPPER;
+
+ if (m->max_use < DEFAULT_MAX_USE_LOWER)
+ m->max_use = DEFAULT_MAX_USE_LOWER;
+ } else
+ m->max_use = DEFAULT_MAX_USE_LOWER;
+ } else {
+ m->max_use = PAGE_ALIGN(m->max_use);
+
+ if (m->max_use < JOURNAL_FILE_SIZE_MIN*2)
+ m->max_use = JOURNAL_FILE_SIZE_MIN*2;
+ }
+
+ if (m->max_size == (uint64_t) -1) {
+ m->max_size = PAGE_ALIGN(m->max_use / 8); /* 8 chunks */
+
+ if (m->max_size > DEFAULT_MAX_SIZE_UPPER)
+ m->max_size = DEFAULT_MAX_SIZE_UPPER;
+ } else
+ m->max_size = PAGE_ALIGN(m->max_size);
+
+ if (m->max_size < JOURNAL_FILE_SIZE_MIN)
+ m->max_size = JOURNAL_FILE_SIZE_MIN;
+
+ if (m->max_size*2 > m->max_use)
+ m->max_use = m->max_size*2;
+
+ if (m->min_size == (uint64_t) -1)
+ m->min_size = JOURNAL_FILE_SIZE_MIN;
+ else {
+ m->min_size = PAGE_ALIGN(m->min_size);
+
+ if (m->min_size < JOURNAL_FILE_SIZE_MIN)
+ m->min_size = JOURNAL_FILE_SIZE_MIN;
+
+ if (m->min_size > m->max_size)
+ m->max_size = m->min_size;
+ }
+
+ if (m->keep_free == (uint64_t) -1) {
+
+ if (fs_size > 0) {
+ m->keep_free = PAGE_ALIGN(fs_size / 20); /* 5% of file system size */
+
+ if (m->keep_free > DEFAULT_KEEP_FREE_UPPER)
+ m->keep_free = DEFAULT_KEEP_FREE_UPPER;
+
+ } else
+ m->keep_free = DEFAULT_KEEP_FREE;
+ }
+
+ log_info("Fixed max_use=%s max_size=%s min_size=%s keep_free=%s",
+ format_bytes(a, sizeof(a), m->max_use),
+ format_bytes(b, sizeof(b), m->max_size),
+ format_bytes(c, sizeof(c), m->min_size),
+ format_bytes(d, sizeof(d), m->keep_free));
+}
~ianmdlvl / elogind.git / blobdiff