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[71.56.157.77]) by smtp.gmail.com with ESMTPSA id z9-20020a05622a028900b0039bde72b14asm10518732qtw.92.2022.11.09.14.29.48 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Nov 2022 14:29:49 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH BlueZ 1/4] shared/util: Add iovec helpers Date: Wed, 9 Nov 2022 14:29:44 -0800 Message-Id: <20221109222947.1137901-1-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.37.3 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz This adds iovec helpers functions. --- src/shared/util.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++ src/shared/util.h | 6 ++++++ 2 files changed, 59 insertions(+) diff --git a/src/shared/util.c b/src/shared/util.c index 0a0308cb0786..228044be459a 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -189,6 +189,59 @@ void util_clear_uid(uint64_t *bitmap, uint8_t id) *bitmap &= ~(((uint64_t)1) << (id - 1)); } +struct iovec *util_iov_dup(const struct iovec *iov, size_t cnt) +{ + struct iovec *dup; + size_t i; + + if (!iov) + return NULL; + + dup = new0(struct iovec, cnt); + + for (i = 0; i < cnt; i++) + util_iov_memcpy(&dup[i], iov[i].iov_base, iov[i].iov_len); + + return dup; +} + +int util_iov_memcmp(const struct iovec *iov1, const struct iovec *iov2) +{ + if (!iov1) + return 1; + + if (!iov2) + return -1; + + if (iov1->iov_len != iov2->iov_len) + return iov1->iov_len - iov2->iov_len; + + return memcmp(iov1->iov_base, iov2->iov_base, iov1->iov_len); +} + +void util_iov_memcpy(struct iovec *iov, void *src, size_t len) +{ + if (!iov) + return; + + iov->iov_base = realloc(iov->iov_base, len); + iov->iov_len = len; + memcpy(iov->iov_base, src, len); +} + +void util_iov_free(struct iovec *iov, size_t cnt) +{ + size_t i; + + if (!iov) + return; + + for (i = 0; i < cnt; i++) + free(iov[i].iov_base); + + free(iov); +} + static const struct { uint16_t uuid; const char *str; diff --git a/src/shared/util.h b/src/shared/util.h index 554481e1e1ea..765a4e956636 100644 --- a/src/shared/util.h +++ b/src/shared/util.h @@ -15,6 +15,7 @@ #include #include #include +#include #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) #define BIT(n) (1 << (n)) @@ -109,6 +110,11 @@ ssize_t util_getrandom(void *buf, size_t buflen, unsigned int flags); uint8_t util_get_uid(uint64_t *bitmap, uint8_t max); void util_clear_uid(uint64_t *bitmap, uint8_t id); +struct iovec *util_iov_dup(const struct iovec *iov, size_t cnt); +int util_iov_memcmp(const struct iovec *iov1, const struct iovec *iov2); +void util_iov_memcpy(struct iovec *iov, void *src, size_t len); +void util_iov_free(struct iovec *iov, size_t cnt); + const char *bt_uuid16_to_str(uint16_t uuid); const char *bt_uuid32_to_str(uint32_t uuid); const char *bt_uuid128_to_str(const uint8_t uuid[16]);