diff options
| author | Dmitry Safonov <dima@arista.com> | 2025-10-07 04:46:47 +0100 |
|---|---|---|
| committer | Nathan Chancellor <nathan@kernel.org> | 2025-10-07 09:53:05 -0700 |
| commit | 38492c5743f8b7213ca86f0cd72ea625af35d5ef (patch) | |
| tree | aa7d10e06c7c6c18c194926b2f0c5cbe44087398 | |
| parent | 7ded7d37e5f5b36b4acd74380156cf07b6640c5b (diff) | |
gen_init_cpio: Ignore fsync() returning EINVAL on pipes
The reproducer:
echo | ./usr/gen_init_cpio /dev/stdin > /dev/null
fsync() on a pipe fd returns -EINVAL, which makes gen_init_cpio fail.
Ignore -EINVAL from fsync().
Fixes: ae18b94099b0 ("gen_init_cpio: support -o <output_file> parameter")
Cc: David Disseldorp <ddiss@suse.de>
Cc: Nicolas Schier <nsc@kernel.org>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: David Disseldorp <ddiss@suse.de>
Link: https://patch.msgid.link/20251007-gen_init_cpio-pipe-v2-1-b098ab94b58a@arista.com
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
| -rw-r--r-- | usr/gen_init_cpio.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c index 75e9561ba313..b7296edc6626 100644 --- a/usr/gen_init_cpio.c +++ b/usr/gen_init_cpio.c @@ -112,7 +112,10 @@ static int cpio_trailer(void) push_pad(padlen(offset, 512)) < 0) return -1; - return fsync(outfd); + if (fsync(outfd) < 0 && errno != EINVAL) + return -1; + + return 0; } static int cpio_mkslink(const char *name, const char *target, |