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b=H4sIAG/qLmUC/7WOwQ6CMBBEf8X07JpuQWg8+R/GQ10WaALUbEnVG P7diifveps3yeTNU0UWz1EdNk8lnHz0YcpQbDeKejd1DL7JrIw2BWqsIM4y0fUBjfjEEmHiGW5 eeOAY4SLBNRTGHGi02iCuqR0dAbXdpyFwRqO2pcHK7lU2XYVbf19fnM6Zex/nII/1VMJ3+1t/Q kAoTVFaXZPTNR+7ELqBd3mq3geS+YPUZGlF9b6qGZviYr+ky7K8AFHQlQeMAQAA X-Developer-Key: i=justinstitt@google.com; a=ed25519; pk=tC3hNkJQTpNX/gLKxTNQKDmiQl6QjBNCGKJINqAdJsE= X-Developer-Signature: v=1; a=ed25519-sha256; t=1697573487; l=2149; i=justinstitt@google.com; s=20230717; h=from:subject:message-id; bh=IYHa4GmWLvGCvatbI5bBzz5yNCmTjMuR/IQRybWbAVA=; b=92S9SAvX+VpKkETDSsphUKuxpQoOMQ38sXOjPqap5XFBJDgU6idJpjDTsAT6xQE5WhuPekvyN ZGd3Vn32yiOB+ntaW9DlkyRHaWbxMNkQ7hltpgq0KkZV8Pz03ozInsQ X-Mailer: b4 0.12.3 Message-ID: <20231017-strncpy-drivers-net-wireless-broadcom-brcm80211-brcmfmac-cfg80211-c-v3-0-af780d74ae38@google.com> Subject: [PATCH v3 0/2] wifi: brcm80211: replace deprecated strncpy From: Justin Stitt To: Arend van Spriel , Franky Lin , Hante Meuleman , Kalle Valo Cc: linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, SHA-cyfmac-dev-list@infineon.com, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, Justin Stitt X-Spam-Status: No, score=-8.4 required=5.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Tue, 17 Oct 2023 13:11:48 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780034843952944826 X-GMAIL-MSGID: 1780034843952944826 Hi, This series used to be just one patch in [v2] but I've split it into two separate patches. The motivation behind this series is that strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. In cases where we expect the destination buffer to be NUL-terminated let's opt for strscpy() as this guarantees NUL-termination. Other cases are just simple byte copies with pre-determined bounds; for these let's use plain-ol' memcpy(). Each change is detailed in its accompanying patch message. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Signed-off-by: Justin Stitt Reviewed-by: Franky Lin Acked-by: Arend van Spriel --- Changes in v3: - split up into two separate patches (thanks Franky) - use better subject line (thanks Franky + Kalle) - Link to v2: https://lore.kernel.org/r/20231016-strncpy-drivers-net-wireless-broadcom-brcm80211-brcmfmac-cfg80211-c-v2-1-6c7567e1d3b8@google.com Changes in v2: - add other strncpy replacements - Link to v1: https://lore.kernel.org/r/20231016-strncpy-drivers-net-wireless-broadcom-brcm80211-brcmfmac-cfg80211-c-v1-1-4234807ca07e@google.com --- Justin Stitt (2): wifi: brcm80211: replace deprecated strncpy with strscpy wifi: brcmsmac: replace deprecated strncpy with memcpy drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 2 +- drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 2 +- drivers/net/wireless/broadcom/brcm80211/brcmsmac/channel.c | 6 +++--- drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c | 3 +-- drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c | 4 ++-- 5 files changed, 8 insertions(+), 9 deletions(-) --- base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2 change-id: 20231016-strncpy-drivers-net-wireless-broadcom-brcm80211-brcmfmac-cfg80211-c-a20108421685 Best regards, -- Justin Stitt