journal: when sending journal data via file, place it in /dev/shm, to allow early...

[elogind.git] / src / journal / journal-file.c

diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
index 15a752d507eae8892e92ae7931dd3d562347a28c..59ad84e23b0eb54d31cd992410f4ae1555f6ffbf 100644 (file)
--- a/src/journal/journal-file.c
+++ b/src/journal/journal-file.c
@@ -296,6 +296,15 @@ static int journal_file_move_to(JournalFile *f, int wt, uint64_t offset, uint64_
         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 &&
@@ -321,21 +330,18 @@ static int journal_file_move_to(JournalFile *f, int wt, uint64_t offset, uint64_
                  * 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 > (uint64_t) f->last_stat.st_size)
-                return -EADDRNOTAVAIL;
-
         if (offset + size > (uint64_t) f->last_stat.st_size)
-                size = PAGE_ALIGN((uint64_t) f->last_stat.st_size - offset);
+                size = (uint64_t) f->last_stat.st_size - offset;
 
         if (size <= 0)
                 return -EADDRNOTAVAIL;
@@ -911,7 +917,7 @@ static int journal_file_link_entry(JournalFile *f, Object *o, uint64_t offset) {
         if (r < 0)
                 return r;
 
-        log_error("=> %s seqnr=%lu n_entries=%lu", f->path, (unsigned long) o->entry.seqnum, (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;
@@ -1010,9 +1016,6 @@ int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const st
             ts->monotonic < le64toh(f->header->tail_entry_monotonic))
                 return -EINVAL;
 
-        if (ts->realtime < le64toh(f->header->tail_entry_realtime))
-                return -EINVAL;
-
         items = alloca(sizeof(EntryItem) * n_iovec);
 
         for (i = 0; i < n_iovec; i++) {
@@ -2100,7 +2103,7 @@ int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint6
 void journal_default_metrics(JournalMetrics *m, int fd) {
         uint64_t fs_size = 0;
         struct statvfs ss;
-        char a[64], b[64], c[64], d[64];
+        char a[FORMAT_BYTES_MAX], b[FORMAT_BYTES_MAX], c[FORMAT_BYTES_MAX], d[FORMAT_BYTES_MAX];
 
         assert(m);
         assert(fd >= 0);