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From: Samuel Thibault <sthibaul@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] Update code to handle the new ABI for sending inlined port rights. Date: Sun, 3 Dec 2023 00:04:44 +0000 (GMT) [thread overview] Message-ID: <20231203000444.469723858C35@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=7e23b3c2c008e0b9b5da055e675d40cc27bb10ef commit 7e23b3c2c008e0b9b5da055e675d40cc27bb10ef Author: Flavio Cruz <flaviocruz@gmail.com> Date: Fri Nov 24 16:30:38 2023 -0500 Update code to handle the new ABI for sending inlined port rights. For i686, this change is no op but for x86_64 it forces all inlined port rights to be 8 bytes long. Message-ID: <20231124213041.952886-2-flaviocruz@gmail.com> Diff: --- hurd/intr-msg.c | 26 ++++++++++++++++++++++++-- mach/msg-destroy.c | 12 +++++++++--- 2 files changed, 33 insertions(+), 5 deletions(-) diff --git a/hurd/intr-msg.c b/hurd/intr-msg.c index 24184f827f..d52e90449e 100644 --- a/hurd/intr-msg.c +++ b/hurd/intr-msg.c @@ -199,6 +199,28 @@ _hurd_intr_rpc_mach_msg (mach_msg_header_t *msg, __vm_deallocate (__mach_task_self (), (vm_address_t) data, length); } + inline void clean_inlined_ports (mach_port_name_inlined_t *ports) + { + mach_msg_type_number_t i; + switch (name) + { + case MACH_MSG_TYPE_MOVE_SEND: + for (i = 0; i < number; i++) + __mach_port_deallocate (__mach_task_self (), ports[i].name); + if (ty->msgtl_header.msgt_longform) + ty->msgtl_name = MACH_MSG_TYPE_COPY_SEND; + else + ty->msgtl_header.msgt_name = MACH_MSG_TYPE_COPY_SEND; + break; + case MACH_MSG_TYPE_COPY_SEND: + case MACH_MSG_TYPE_MOVE_RECEIVE: + break; + default: + if (MACH_MSG_TYPE_PORT_ANY (name)) + assert (! "unexpected port type in interruptible RPC"); + } + } + char *data; if (ty->msgtl_header.msgt_longform) { @@ -215,11 +237,11 @@ _hurd_intr_rpc_mach_msg (mach_msg_header_t *msg, data = (char *) ty + sizeof (mach_msg_type_t); } + /* Calculate length of data in bytes. */ const vm_size_t length = ((number * size) + 7) >> 3; if (ty->msgtl_header.msgt_inline) { - /* Calculate length of data in bytes. */ - clean_ports_and_memory (data, length, 0); + clean_inlined_ports (data); /* Move to the next argument. */ ty = (void *) PTR_ALIGN_UP (data + length, __alignof__ (uintptr_t)); } diff --git a/mach/msg-destroy.c b/mach/msg-destroy.c index 19137baa62..8640c965bd 100644 --- a/mach/msg-destroy.c +++ b/mach/msg-destroy.c @@ -108,11 +108,17 @@ __mach_msg_destroy (mach_msg_header_t *msg) addr = is_inline ? saddr : * (vm_offset_t *) saddr; if (MACH_MSG_TYPE_PORT_ANY(name)) { - mach_port_t *ports = (mach_port_t *) addr; mach_msg_type_number_t i; - for (i = 0; i < number; i++) - mach_msg_destroy_port(*ports++, name); + if (is_inline) { + mach_port_name_inlined_t *inlined_ports = (mach_port_name_inlined_t *)addr; + for (i = 0; i < number; i++) + mach_msg_destroy_port(inlined_ports[i].name, name); + } else { + mach_port_t *ports = (mach_port_t *) addr; + for (i = 0; i < number; i++) + mach_msg_destroy_port(ports[i], name); + } } if (is_inline) {
next reply other threads:[~2023-12-03 0:04 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-12-03 0:04 Samuel Thibault [this message] 2023-12-17 22:53 Samuel Thibault
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