tipc: replace deprecated strcpy with strscpy in tipc_bearer_get_name()

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The `strcpy()` function is deprecated and moving towards code-tree
elimination. Replacing it with `strscpy()` fixes potential buffer
overflow vectors by ensuring safe NULL-termination based on the
destination buffer size limit [1][2].

To make the interface safer and more robust for future callers, refactor
`tipc_bearer_get_name()` to accept a destination buffer length parameter.
Replace `strcpy()` with `strscpy()` and pass through any potential
`-E2BIG` truncation error code up to the caller. Update the existing
caller in `net/tipc/monitor.c` to pass its array size.

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Link: https://github.com/KSPP/linux/issues/88 [2]

Signed-off-by: Ajith Parappalliyalil Venugopal <ajithpv.linux@gmail.com>
Reviewed-by: Tung Nguyen <tung.quang.nguyen@est.tech>
Link: https://patch.msgid.link/20260915145641.2434403-1-ajithpv.linux@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Ajith Parappalliyalil Venugopal 2026-09-15 14:56:41 +00:00 • committed by Jakub Kicinski

parent 8b85347619

commit 4bb9710c6a

3 changed files with 8 additions and 4 deletions

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6

net/tipc/bearer.c

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3

net/tipc/bearer.h

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3

net/tipc/monitor.c

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