kernel/arch/um/os-Linux/umid.c, branch linux-rolling-stable

um: Do not propagate uml_dir parameter to kernel

2024-10-23T07:52:48Z

This parameter is UML specific and is unknown to kernel. It should not be propagated to kernel, otherwise it will be passed to user space as an environment option by kernel with a warning like: Unknown kernel command line parameters "uml_dir=/foo", will be passed to user space. Signed-off-by: Tiwei Bie Link: https://patch.msgid.link/20241011040441.1586345-4-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg

um: Convert strscpy() usage to 2-argument style

2024-02-21T04:47:32Z

The ARCH=um build has its own idea about strscpy()'s definition. Adjust the callers to remove the redundant sizeof() arguments ahead of treewide changes, since it needs a manual adjustment for the newly named sized_strscpy() export. Cc: Richard Weinberger Cc: linux-um@lists.infradead.org Signed-off-by: Kees Cook

um: Remove strlcpy declaration

2023-07-27T15:51:06Z

strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). No return values were used, so direct replacement is safe. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20230703160641.1790935-1-azeemshaikh38@gmail.com Signed-off-by: Kees Cook

um: remove unused variable

2022-07-17T21:26:27Z

The variable dead is initialized but never used otherwise. Signed-off-by: Haowen Bai Signed-off-by: Richard Weinberger

um: Remove use of asprinf in umid.c

2020-12-13T21:21:07Z

asprintf is not compatible with the existing uml memory allocation mechanism. Its use on the "user" side of UML results in a corrupt slab state. Fixes: 0d4e5ac7e780 ("um: remove uses of variable length arrays") Cc: stable@vger.kernel.org Signed-off-by: Anton Ivanov Signed-off-by: Richard Weinberger

um: Fix incorrect assumptions about max pid length

2020-10-11T21:21:06Z

pids are no longer limited to 16-bits, bump to 32-bits, ie. 9 decimal characters. Additionally sizeof("/") already returns 2 - ie. it already accounts for trailing zero. Cc: Jeff Dike Cc: Richard Weinberger Cc: Anton Ivanov Cc: Linux UM Mailing List Signed-off-by: Maciej Żenczykowski Signed-off-by: Richard Weinberger

um: Fix len of file in create_pid_file

2020-03-29T21:20:07Z

sizeof gives us the size of the pointer variable, not of the area it points to. So the number of bytes copied by umid_file_name() is 8. We should pass in the correct length of the file buffer. Signed-off-by: Wen Yang Signed-off-by: Richard Weinberger

um: Add SPDX headers for files in arch/um/os-Linux

2019-09-15T19:37:17Z

Convert files to use SPDX header. All files are licensed under the GPLv2. Signed-off-by: Alex Dewar Signed-off-by: Richard Weinberger

um: remove uses of variable length arrays

2019-05-07T21:18:28Z

While the affected code is run in user-mode, the build still warns about it. Convert all uses of VLA to dynamic allocations. Signed-off-by: Bartosz Golaszewski Signed-off-by: Richard Weinberger

um: Use os_warn to print out pre-boot warning/error messages

2017-07-05T21:18:25Z

Use os_warn() instead of printf/fprintf to print out pre-boot warning/error messages to stderr. Note that the help message and version message are kept to print out to stdout, because user explicitly specifies those options to get such information. Signed-off-by: Masami Hiramatsu Signed-off-by: Richard Weinberger