Norman Feske 0e3a9bfe1f libc: fix cached ioctl info file access ...

This patch solves the false-negative error message "failed to open file"
referring to an ioctl info file during an ioctl call. The message is
now avoided by checking for the existence of the file before reading it.

However, the observed symptom uncovered an actual bug that was
introduced in commit "libc vfs: open OSS 'info' file only once" with
the attempt to cache the content of ioctl info files. When called
multiple time for different paths, 'Vfs_plugin::_with_info' would
wrongly return the info from the first call as cached in a local
static variable.

The patch fixes the problem by a new added 'Cached_ioctl_info'
implementation in the scope of the 'Vfs_plugin'.

Issue #4372
Fixes #4852

2023-05-04 11:59:14 +02:00

..

app

Document event handling in acpi_event

2023-02-27 08:22:50 +01:00

drivers/framebuffer/vesa

Replace use of base/snprintf.h by format library

2023-03-13 14:32:53 +01:00

lib

libc: fix cached ioctl info file access

2023-05-04 11:59:14 +02:00

server/system_rtc

Replace server/acpi_input with app/acpi_event

2020-08-25 11:49:44 +02:00

test

vfs_block: warn only once if sync is not supported

2023-04-27 14:24:29 +02:00