From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id D91A2A0543; Tue, 4 Oct 2022 11:45:33 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 16C7C42B8A; Tue, 4 Oct 2022 11:45:09 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by mails.dpdk.org (Postfix) with ESMTP id 24B0D42B88 for ; Tue, 4 Oct 2022 11:45:08 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1664876707; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OIkmB8l98HwvF+QzBvZ5YSZYTX4FfUj8D6RppBJLl1Q=; b=Y/vgyC4pWFvRf9uo03K2l8dex3lleZi/aKjjGOOoshEQkZ5P+68gAoKcpwNIJ8VfusdE2K bQl32pyi2ep5dzk+//Dn5dQ1pIvXmYqSwiocV2T8Fl3jz5GE4+kAahc7yXEba/Dh2m27NZ ke5vhYRyX6KtNtEVOyB6JD23GHO2TKI= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-185-eMtDyCISMUaExlxG4guNjw-1; Tue, 04 Oct 2022 05:45:03 -0400 X-MC-Unique: eMtDyCISMUaExlxG4guNjw-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 487153810D24; Tue, 4 Oct 2022 09:45:03 +0000 (UTC) Received: from localhost.localdomain (unknown [10.40.195.42]) by smtp.corp.redhat.com (Postfix) with ESMTP id 57763492B04; Tue, 4 Oct 2022 09:45:02 +0000 (UTC) From: David Marchand To: dev@dpdk.org Cc: skori@mavell.com, jerinj@marvell.com, Sunil Kumar Kori Subject: [PATCH v2 9/9] trace: remove limitation on directory Date: Tue, 4 Oct 2022 11:44:18 +0200 Message-Id: <20221004094418.196544-10-david.marchand@redhat.com> In-Reply-To: <20221004094418.196544-1-david.marchand@redhat.com> References: <20220921120359.2201131-1-david.marchand@redhat.com> <20221004094418.196544-1-david.marchand@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII"; x-default=true X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Remove arbitrary limit on 12 characters of the file prefix used for the directory where to store the traces. Simplify the code by relying on dynamic allocations. Signed-off-by: David Marchand --- lib/eal/common/eal_common_trace_utils.c | 68 +++++++++---------------- lib/eal/common/eal_trace.h | 5 +- 2 files changed, 25 insertions(+), 48 deletions(-) diff --git a/lib/eal/common/eal_common_trace_utils.c b/lib/eal/common/eal_common_trace_utils.c index 72108d36a6..8561a0e198 100644 --- a/lib/eal/common/eal_common_trace_utils.c +++ b/lib/eal/common/eal_common_trace_utils.c @@ -87,11 +87,11 @@ trace_uuid_generate(void) } static int -trace_session_name_generate(char *trace_dir) +trace_session_name_generate(char **trace_dir) { + char date[sizeof("YYYY-mm-dd-AM-HH-MM-SS")]; struct tm *tm_result; time_t tm; - int rc; tm = time(NULL); if ((int)tm == -1) @@ -101,38 +101,32 @@ trace_session_name_generate(char *trace_dir) if (tm_result == NULL) goto fail; - rc = rte_strscpy(trace_dir, eal_get_hugefile_prefix(), - TRACE_PREFIX_LEN); - if (rc == -E2BIG) - rc = TRACE_PREFIX_LEN - 1; - trace_dir[rc++] = '-'; - - rc = strftime(trace_dir + rc, TRACE_DIR_STR_LEN - rc, - "%Y-%m-%d-%p-%I-%M-%S", tm_result); - if (rc == 0) { + if (strftime(date, sizeof(date), "%Y-%m-%d-%p-%I-%M-%S", tm_result) == 0) { errno = ENOSPC; goto fail; } - return rc; + if (asprintf(trace_dir, "%s-%s", eal_get_hugefile_prefix(), date) == -1) + goto fail; + + return 0; fail: rte_errno = errno; - return -rte_errno; + return -1; } static int trace_dir_update(const char *str) { struct trace *trace = trace_obj_get(); - int rc, remaining; - - remaining = sizeof(trace->dir) - trace->dir_offset; - rc = rte_strscpy(&trace->dir[0] + trace->dir_offset, str, remaining); - if (rc < 0) - goto fail; + char *dir; + int rc; - trace->dir_offset += rc; -fail: + rc = asprintf(&dir, "%s%s", trace->dir != NULL ? trace->dir : "", str); + if (rc != -1) { + free(trace->dir); + trace->dir = dir; + } return rc; } @@ -246,22 +240,15 @@ eal_trace_mode_args_save(const char *val) int eal_trace_dir_args_save(char const *val) { - struct trace *trace = trace_obj_get(); char *dir_path; int rc; - if (strlen(val) >= sizeof(trace->dir) - 1) { - trace_err("input string is too big"); - return -ENAMETOOLONG; - } - if (asprintf(&dir_path, "%s/", val) == -1) { trace_err("failed to copy directory: %s", strerror(errno)); return -ENOMEM; } rc = trace_dir_update(dir_path); - free(dir_path); return rc; } @@ -289,10 +276,8 @@ trace_epoch_time_save(void) } static int -trace_dir_default_path_get(char *dir_path) +trace_dir_default_path_get(char **dir_path) { - struct trace *trace = trace_obj_get(); - uint32_t size = sizeof(trace->dir); struct passwd *pwd; char *home_dir; @@ -308,8 +293,8 @@ trace_dir_default_path_get(char *dir_path) } /* Append dpdk-traces to directory */ - if (snprintf(dir_path, size, "%s/dpdk-traces/", home_dir) < 0) - return -ENAMETOOLONG; + if (asprintf(dir_path, "%s/dpdk-traces/", home_dir) == -1) + return -ENOMEM; return 0; } @@ -318,25 +303,19 @@ static int trace_mkdir(void) { struct trace *trace = trace_obj_get(); - char session[TRACE_DIR_STR_LEN]; static bool already_done; - char *dir_path; + char *session; int rc; if (already_done) return 0; - if (!trace->dir_offset) { - dir_path = calloc(1, sizeof(trace->dir)); - if (dir_path == NULL) { - trace_err("fail to allocate memory"); - return -ENOMEM; - } + if (trace->dir == NULL) { + char *dir_path; - rc = trace_dir_default_path_get(dir_path); + rc = trace_dir_default_path_get(&dir_path); if (rc < 0) { trace_err("fail to get default path"); - free(dir_path); return rc; } @@ -354,10 +333,11 @@ trace_mkdir(void) return -rte_errno; } - rc = trace_session_name_generate(session); + rc = trace_session_name_generate(&session); if (rc < 0) return rc; rc = trace_dir_update(session); + free(session); if (rc < 0) return rc; diff --git a/lib/eal/common/eal_trace.h b/lib/eal/common/eal_trace.h index 26a18a2c48..d66bcfe198 100644 --- a/lib/eal/common/eal_trace.h +++ b/lib/eal/common/eal_trace.h @@ -22,8 +22,6 @@ #define trace_crit(fmt, args...) \ RTE_LOG(CRIT, EAL, "%s():%u " fmt "\n", __func__, __LINE__, ## args) -#define TRACE_PREFIX_LEN 12 -#define TRACE_DIR_STR_LEN (sizeof("YYYY-mm-dd-AM-HH-MM-SS") + TRACE_PREFIX_LEN) #define TRACE_CTF_MAGIC 0xC1FC1FC1 #define TRACE_MAX_ARGS 32 @@ -50,8 +48,7 @@ struct trace_arg { }; struct trace { - char dir[PATH_MAX]; - int dir_offset; + char *dir; int register_errno; uint32_t status; enum rte_trace_mode mode; -- 2.37.3