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bh=UDPRMrNkuLByuTPoBFeGZ6rQXVXqUChcsg87De8wo7I=; b=F62hWxjc5y6/Nxi9rqoN2vvVuCcN7ynnxeuCnpZwUzEPzhR1coz0cbC1ywKQwc8nEmI3ef PmyR5Ui4mSAUNsFdIUCzfvTFaV4TLFJalU/SHIqRNzZ34QWZNJ1cjYAAAZ2AFgMdY2G5g7 nkjZGl4YJXMiaDZOu/NqrW6/1xUe5fs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1710200048; h=from:from:reply-to: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=UDPRMrNkuLByuTPoBFeGZ6rQXVXqUChcsg87De8wo7I=; b=l+i66OJq+zPpGAnagwB2WLN2yHfHksiP4UIctMDK45gMegOMHBGIo6UPx44Qi5utyCDJ9b Ta4ZZaoZQITpf9CA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1710200048; h=from:from:reply-to: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=UDPRMrNkuLByuTPoBFeGZ6rQXVXqUChcsg87De8wo7I=; b=F62hWxjc5y6/Nxi9rqoN2vvVuCcN7ynnxeuCnpZwUzEPzhR1coz0cbC1ywKQwc8nEmI3ef PmyR5Ui4mSAUNsFdIUCzfvTFaV4TLFJalU/SHIqRNzZ34QWZNJ1cjYAAAZ2AFgMdY2G5g7 nkjZGl4YJXMiaDZOu/NqrW6/1xUe5fs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1710200048; h=from:from:reply-to: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=UDPRMrNkuLByuTPoBFeGZ6rQXVXqUChcsg87De8wo7I=; b=l+i66OJq+zPpGAnagwB2WLN2yHfHksiP4UIctMDK45gMegOMHBGIo6UPx44Qi5utyCDJ9b Ta4ZZaoZQITpf9CA== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Peter Xu , Peter Maydell Subject: [PATCH 1/2] io: Introduce qio_channel_file_new_dupfd Date: Mon, 11 Mar 2024 20:33:34 -0300 Message-Id: <20240311233335.17299-2-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240311233335.17299-1-farosas@suse.de> References: <20240311233335.17299-1-farosas@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Authentication-Results: smtp-out2.suse.de; none X-Spam-Score: -1.87 X-Spamd-Result: default: False [-1.87 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; NEURAL_HAM_LONG(-1.00)[-1.000]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; BAYES_HAM(-1.57)[92.20%] Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=195.135.223.131; envelope-from=farosas@suse.de; helo=smtp-out2.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @suse.de) X-ZM-MESSAGEID: 1710200115999100002 Add a new helper function for creating a QIOChannelFile channel with a duplicated file descriptor. This saves the calling code from having to do error checking on the dup() call. Suggested-by: Daniel P. Berrang=C3=A9 Signed-off-by: Fabiano Rosas Reviewed-by: Daniel P. Berrang=C3=A9 --- include/io/channel-file.h | 18 ++++++++++++++++++ io/channel-file.c | 12 ++++++++++++ 2 files changed, 30 insertions(+) diff --git a/include/io/channel-file.h b/include/io/channel-file.h index 50e8eb1138..d373a4e44d 100644 --- a/include/io/channel-file.h +++ b/include/io/channel-file.h @@ -68,6 +68,24 @@ struct QIOChannelFile { QIOChannelFile * qio_channel_file_new_fd(int fd); =20 +/** + * qio_channel_file_new_dupfd: + * @fd: the file descriptor + * @errp: pointer to initialized error object + * + * Create a new IO channel object for a file represented by the @fd + * parameter. Like qio_channel_file_new_fd(), but the @fd is first + * duplicated with dup(). + * + * The channel will own the duplicated file descriptor and will take + * responsibility for closing it, the original FD is owned by the + * caller. + * + * Returns: the new channel object + */ +QIOChannelFile * +qio_channel_file_new_dupfd(int fd, Error **errp); + /** * qio_channel_file_new_path: * @path: the file path diff --git a/io/channel-file.c b/io/channel-file.c index d4706fa592..cbdd03bf21 100644 --- a/io/channel-file.c +++ b/io/channel-file.c @@ -45,6 +45,18 @@ qio_channel_file_new_fd(int fd) return ioc; } =20 +QIOChannelFile * +qio_channel_file_new_dupfd(int fd, Error **errp) +{ + int newfd =3D dup(fd); + + if (newfd < 0) { + error_setg_errno(errp, errno, "Could not dup FD %d", fd); + return NULL; + } + + return qio_channel_file_new_fd(newfd); +} =20 QIOChannelFile * qio_channel_file_new_path(const char *path, --=20 2.35.3