diff options
Diffstat (limited to 'src/coredump/coredump.c')
| -rw-r--r-- | src/coredump/coredump.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/src/coredump/coredump.c b/src/coredump/coredump.c index a8ee8e0..f5c4cf5 100644 --- a/src/coredump/coredump.c +++ b/src/coredump/coredump.c @@ -503,17 +503,21 @@ static int save_external_coredump( bus_error_message(&error, r)); } + /* First, ensure we are not going to go over the cgroup limit */ max_size = MIN(cgroup_limit, max_size); - max_size = LESS_BY(max_size, 1024U) / 2; /* Account for 1KB metadata overhead for compressing */ - max_size = MAX(PROCESS_SIZE_MIN, max_size); /* Impose a lower minimum */ - - /* tmpfs might get full quickly, so check the available space too. - * But don't worry about errors here, failing to access the storage - * location will be better logged when writing to it. */ + /* tmpfs might get full quickly, so check the available space too. But don't worry about + * errors here, failing to access the storage location will be better logged when writing to + * it. */ if (fstatvfs(fd, &sv) >= 0) max_size = MIN((uint64_t)sv.f_frsize * (uint64_t)sv.f_bfree, max_size); - - log_debug("Limiting core file size to %" PRIu64 " bytes due to cgroup memory limits.", max_size); + /* Impose a lower minimum, otherwise we will miss the basic headers. */ + max_size = MAX(PROCESS_SIZE_MIN, max_size); + /* Ensure we can always switch to compressing on the fly in case we are running out of space + * by keeping half of the space/memory available, plus 1KB metadata overhead from the + * compression algorithm. */ + max_size = LESS_BY(max_size, 1024U) / 2; + + log_debug("Limiting core file size to %" PRIu64 " bytes due to cgroup and/or filesystem limits.", max_size); } r = copy_bytes(input_fd, fd, max_size, 0); |