Michael Bommarito dc058600e7 um: drivers: call kernel_strrchr() explicitly in cow_user.c ...

commit 91e901c65b upstream.

Building ARCH=um on glibc >= 2.43 fails:

  arch/um/drivers/cow_user.c: error: implicit declaration of
  function 'strrchr' [-Wimplicit-function-declaration]

glibc 2.43's C23 const-preserving strrchr() macro does not survive
UML's global -Dstrrchr=kernel_strrchr remap from arch/um/Makefile.
Call kernel_strrchr() directly in cow_user.c so the source no longer
depends on the -D rewrite.

Fixes: 2c51a4bc02 ("um: fix strrchr() problems")
Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-6
Assisted-by: Codex:gpt-5-4
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Link: https://patch.msgid.link/20260408070102.2325572-1-michael.bommarito@gmail.com
[remove unnecessary 'extern']
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-05-07 06:09:26 +02:00

..

chan_kern.c

um: chan: use blocking IO for console output for time-travel

2024-07-03 12:18:02 +02:00

chan_user.c

um: chan_user: retry partial writes

2024-07-03 12:18:02 +02:00

chan_user.h

…

chan.h

um: chan: use blocking IO for console output for time-travel

2024-07-03 12:18:02 +02:00

cow_sys.h

…

cow_user.c

um: drivers: call kernel_strrchr() explicitly in cow_user.c

2026-05-07 06:09:26 +02:00

cow.h

…

daemon_kern.c

…

daemon_user.c

…

daemon.h

…

fd.c

…

harddog_kern.c

[tree-wide] finally take no_llseek out

2024-09-27 08:18:43 -07:00

harddog_user_exp.c

…

harddog_user.c

…

harddog.h

…

hostaudio_kern.c

[tree-wide] finally take no_llseek out

2024-09-27 08:18:43 -07:00

Kconfig

um: Remove obsolete pcap driver

2024-07-03 12:19:25 +02:00

line.c

um: line: always fill *error_out in setup_one_line()

2024-07-04 12:03:14 +02:00

line.h

…

Makefile

um: Remove obsolete pcap driver

2024-07-03 12:19:25 +02:00

mconsole_kern.c

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mconsole_kern.h

…

mconsole_user.c

minmax: make generic MIN() and MAX() macros available everywhere

2024-07-28 15:49:18 -07:00

mconsole.h

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mmapper_kern.c

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net_kern.c

um: net: Do not use drvdata in release

2024-12-05 14:02:53 +01:00

net_user.c

…

null.c

…

port_kern.c

um: generalize os_rcv_fd

2024-07-03 12:24:25 +02:00

port_user.c

…

port.h

…

pty.c

…

random.c

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rtc_kern.c

…

rtc_user.c

um: rtc: Avoid shadowing err in uml_rtc_start()

2025-08-15 12:13:42 +02:00

rtc.h

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slip_common.c

…

slip_common.h

…

slip_kern.c

…

slip_user.c

…

slip.h

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slirp_kern.c

…

slirp_user.c

…

slirp.h

…

ssl.c

um: Fix help message for ssl-non-raw

2025-11-13 15:34:33 -05:00

stderr_console.c

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stdio_console.c

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stdio_console.h

…

tty.c

…

ubd_kern.c

um: ubd: Initialize ubd's disk pointer in ubd_add

2024-12-05 14:03:03 +01:00

ubd_user.c

um: ubd: Add missing error check in start_io_thread()

2025-07-06 11:01:40 +02:00

ubd.h

…

umcast_kern.c

…

umcast_user.c

…

umcast.h

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vde_kern.c

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vde_user.c

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vde.h

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vector_kern.c

um: vector: Reduce stack usage in vector_eth_configure()

2025-07-17 18:37:20 +02:00

vector_kern.h

um: vector: Replace locks guarding queue depth with atomics

2024-09-12 19:56:05 +02:00

vector_transports.c

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vector_user.c

vector_user: add VDE support

2024-09-12 20:16:42 +02:00

vector_user.h

…

vhost_user.h

…

virt-pci.c

move asm/unaligned.h to linux/unaligned.h

2024-10-02 17:23:23 -04:00

virtio_uml.c

um: virtio_uml: Fix use-after-free after put_device in probe

2025-09-25 11:13:42 +02:00

xterm_kern.c

um: generalize os_rcv_fd

2024-07-03 12:24:25 +02:00

xterm.c

um: generalize os_rcv_fd

2024-07-03 12:24:25 +02:00

xterm.h

…