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Yelninei
b2ada25a26
* gnu/packages/patches/hurd-streamio-select.patch: New patch. * gnu/local.mk (dist_patch_DATA): Register it. * gnu/packages/hurd.scm (hurd): Add patch. Change-Id: I608380fbeab50ebc2e631488488aabf63e6483b4 Signed-off-by: Ludovic Courtès <ludo@gnu.org> Signed-off-by: Rutherther <rutherther@ditigal.xyz>
89 lines
2.3 KiB
Diff
89 lines
2.3 KiB
Diff
Upstream status: https://lists.gnu.org/archive/html/bug-hurd/2025-12/msg00043.html
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From ffe82c73f89d12393c62d5ba35b06552af40e029 Mon Sep 17 00:00:00 2001
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From: Yelninei <yelninei@tutamail.com>
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Date: Sun, 28 Dec 2025 10:59:56 +0000
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Subject: [PATCH 1/2] streamio (io_select_common): Don't return in case of
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O_NONBLOCK.
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select should block even when opened with O_NONBLOCK.
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---
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trans/streamio.c | 6 ------
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1 file changed, 6 deletions(-)
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diff --git a/trans/streamio.c b/trans/streamio.c
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index d21dc937..2a48d793 100644
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--- a/trans/streamio.c
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+++ b/trans/streamio.c
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@@ -589,12 +589,6 @@ io_select_common (struct trivfs_protid *cred,
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return 0;
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}
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- if (cred->po->openmodes & O_NONBLOCK)
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- {
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- pthread_mutex_unlock (&global_lock);
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- return EWOULDBLOCK;
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- }
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-
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ports_interrupt_self_on_port_death (cred, reply);
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err = pthread_hurd_cond_timedwait_np (&select_alert, &global_lock, tsp);
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if (err)
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--
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2.52.0
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From 090062ef555ffc29bcb7afcaad5bb46dad5973e9 Mon Sep 17 00:00:00 2001
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From: Yelninei <yelninei@tutamail.com>
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Date: Sun, 28 Dec 2025 11:03:57 +0000
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Subject: [PATCH 2/2] streamio (io_select_common): Request data if none is
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available.
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If no data is available immediately start new read/write requests.
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---
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trans/streamio.c | 23 +++++++++++++++++++++++
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1 file changed, 23 insertions(+)
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diff --git a/trans/streamio.c b/trans/streamio.c
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index 2a48d793..f7cd442f 100644
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--- a/trans/streamio.c
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+++ b/trans/streamio.c
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@@ -190,6 +190,8 @@ error_t dev_write (const void *buf, size_t len, size_t *amount, int nowait);
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will wait for any activity to cease. */
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error_t dev_sync (int wait);
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+static error_t start_input (int nowait);
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+static error_t start_output (int nowait);
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static struct argp_option options[] =
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@@ -589,6 +591,27 @@ io_select_common (struct trivfs_protid *cred,
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return 0;
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}
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+ if (*type & SELECT_READ)
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+ {
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+ err = start_input(1);
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+ if (err)
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+ {
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+ *type = 0;
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+ pthread_mutex_unlock (&global_lock);
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+ return err;
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+ }
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+ }
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+ if (*type & SELECT_WRITE)
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+ {
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+ err = start_output(1);
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+ if (err)
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+ {
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+ *type = 0;
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+ pthread_mutex_unlock (&global_lock);
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+ return err;
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+ }
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+ }
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+
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ports_interrupt_self_on_port_death (cred, reply);
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err = pthread_hurd_cond_timedwait_np (&select_alert, &global_lock, tsp);
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if (err)
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--
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2.52.0
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