Date: Fri, 26 Dec 2025 15:43:51 +0000 From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 4eb560faa725 - main - acpi: Reject duplicate handlers for ioctl commands Message-ID: <694ead37.cd8f.21db4335@gitrepo.freebsd.org>
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The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=4eb560faa725771e536a850a9467fbb592ab3c1b commit 4eb560faa725771e536a850a9467fbb592ab3c1b Author: John Baldwin <jhb@FreeBSD.org> AuthorDate: 2025-12-26 15:36:38 +0000 Commit: John Baldwin <jhb@FreeBSD.org> CommitDate: 2025-12-26 15:36:38 +0000 acpi: Reject duplicate handlers for ioctl commands Reviewed by: imp Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D54311 --- sys/dev/acpica/acpi.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c index 0549c83ded79..e49d3b4d1637 100644 --- a/sys/dev/acpica/acpi.c +++ b/sys/dev/acpica/acpi.c @@ -4203,7 +4203,7 @@ static int acpi_ioctl_hooks_initted; int acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) { - struct acpi_ioctl_hook *hp; + struct acpi_ioctl_hook *hp, *thp; if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) return (ENOMEM); @@ -4216,6 +4216,14 @@ acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg) TAILQ_INIT(&acpi_ioctl_hooks); acpi_ioctl_hooks_initted = 1; } + TAILQ_FOREACH(thp, &acpi_ioctl_hooks, link) { + if (thp->cmd == cmd) { + ACPI_UNLOCK(acpi); + free(hp, M_ACPIDEV); + return (EBUSY); + } + } + TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); ACPI_UNLOCK(acpi);home | help
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