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| author | Ed Maste <emaste@FreeBSD.org> | 2022-03-10 18:04:34 +0000 |
|---|---|---|
| committer | Ed Maste <emaste@FreeBSD.org> | 2022-04-10 23:12:30 +0000 |
| commit | fbc0c2a21b761f676050e8769ef6ea498c0ac579 (patch) | |
| tree | a77adf471b53d8a31f51f909970f2eeeb41472b7 | |
| parent | 3caf7dd45d08a5b7b7fafe39e7aae7d7f8d1a684 (diff) | |
| download | src-fbc0c2a21b761f676050e8769ef6ea498c0ac579.tar.gz src-fbc0c2a21b761f676050e8769ef6ea498c0ac579.zip | |
dumpon: proceed without compression if the kernel lacks support
PR: 252554
Reviewed by: markj
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34520
(cherry picked from commit 2b20327ec9394754c0bac2d83567b972a08e3930)
| -rw-r--r-- | sbin/dumpon/dumpon.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sbin/dumpon/dumpon.c b/sbin/dumpon/dumpon.c index 2b710a611af3..e7f1d06ea666 100644 --- a/sbin/dumpon/dumpon.c +++ b/sbin/dumpon/dumpon.c @@ -572,6 +572,15 @@ main(int argc, char *argv[]) error = ioctl(fd, DIOCSKERNELDUMP, kdap); if (error != 0) error = errno; + if (error == EINVAL && (gzip || zstd)) { + /* Retry without compression in case kernel lacks support. */ + kdap->kda_compression = KERNELDUMP_COMP_NONE; + error = ioctl(fd, DIOCSKERNELDUMP, kdap); + if (error == 0) + warnx("Compression disabled; kernel may lack gzip or zstd support."); + else + error = errno; + } explicit_bzero(kdap->kda_encryptedkey, kdap->kda_encryptedkeysize); free(kdap->kda_encryptedkey); explicit_bzero(kdap, sizeof(*kdap)); |