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Wed, 19 Oct 2022 16:40:02 GMT (envelope-from git) Date: Wed, 19 Oct 2022 16:40:02 GMT Message-Id: <202210191640.29JGe2uj014036@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: 8cf783bde353 - main - device_get_path(): handle case when dev is root List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 8cf783bde35352eb6105cefa9fcb586c01b77179 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1666197602; 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mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=8cf783bde35352eb6105cefa9fcb586c01b77179 commit 8cf783bde35352eb6105cefa9fcb586c01b77179 Author: Konstantin Belousov AuthorDate: 2022-10-06 19:46:30 +0000 Commit: Konstantin Belousov CommitDate: 2022-10-19 16:39:33 +0000 device_get_path(): handle case when dev is root PR: 266862 Based on submission by: takawata Reviewed by: jhb, takawata Disscussed with: imp Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D36899 --- sys/kern/subr_bus.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c index b083411f9876..74bc47174d8d 100644 --- a/sys/kern/subr_bus.c +++ b/sys/kern/subr_bus.c @@ -5309,11 +5309,17 @@ device_get_path(device_t dev, const char *locator, char **rvp) { struct sbuf *sb; char *s; + device_t parent; ssize_t len; int error; + parent = device_get_parent(dev); + if (parent == NULL) { + *rvp = strdup_flags("/", M_BUS, M_NOWAIT); + return (*rvp == NULL ? ENOMEM : 0); + } sb = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND | SBUF_INCLUDENUL); - error = BUS_GET_DEVICE_PATH(device_get_parent(dev), dev, locator, sb); + error = BUS_GET_DEVICE_PATH(parent, dev, locator, sb); sbuf_finish(sb); /* Note: errors checked with sbuf_len() below */ if (error == 0) { len = sbuf_len(sb);