From patchwork Thu Mar 3 00:25:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Programmingkid X-Patchwork-Id: 8486861 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 394589F372 for ; Thu, 3 Mar 2016 00:25:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 20CD120295 for ; Thu, 3 Mar 2016 00:25:55 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0870420254 for ; Thu, 3 Mar 2016 00:25:54 +0000 (UTC) Received: from localhost ([::1]:59795 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abH5V-0004oB-92 for patchwork-qemu-devel@patchwork.kernel.org; Wed, 02 Mar 2016 19:25:53 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57227) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abH5M-0004nz-QJ for qemu-devel@nongnu.org; Wed, 02 Mar 2016 19:25:46 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1abH5H-0008Ti-Ps for qemu-devel@nongnu.org; Wed, 02 Mar 2016 19:25:44 -0500 Received: from mail-io0-x243.google.com ([2607:f8b0:4001:c06::243]:34108) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abH5H-0008TV-G0 for qemu-devel@nongnu.org; Wed, 02 Mar 2016 19:25:39 -0500 Received: by mail-io0-x243.google.com with SMTP id l127so820958iof.1 for ; Wed, 02 Mar 2016 16:25:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:subject:date:message-id:cc:to:mime-version; bh=FlgMnHFhA8C/OsFQ/8ROtrXVoSvmG5lodSetTyW7dyk=; b=XbXgDU5g6h2NAgD/1zOJUwIZTUx8ie7gaX62/zuKNJHoXl2QtPVkB8kpQrhCnbt+Gh Ags4T/IYlcgiQHABSHgx+o/8nfVdXzX7tagOOkj+HjoP49Drq3q7XUHrCqXeLi9XfqQK 1PTcHfM9pXrFFfb5GK+RB4d3wTB2nEVbtytGezhTQKHnSWyUBNJr3ec8TUMygtnOxKh7 bEOYDjtep1CIDqk5dWJC7WbcQPXIzR/+oi5hw8OiTFA6gURZS4w+AV8MQmPxXIYtfPz3 kffuaxJd02Olc/G9u4aP+OQ9Hwu6gMwroD6DpucrENLt7nrTCJVL1dtsMenysuoQiC6P AFtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:subject:date:message-id:cc:to:mime-version; bh=FlgMnHFhA8C/OsFQ/8ROtrXVoSvmG5lodSetTyW7dyk=; b=V1HXNuQpRBHeBbwIEsrVHm7ajM6hWElFljKIAEM38fUiokzFC6Ce0KYpWwVMmSSitL NOVAJdyq+7NZNpdDTDJm/l+fHFm7t3CIap7kGyhTJFNfG1mrZCh1pFYDTn/qqIxpPa5n 2LIcxyjZBfBtQG/NYQ8Z2XzcY9D154QdXQwsqyvQvoMNdjrsD359Dh/ztPVP59Wiytbz Z4mcS9tHSf3muWkNhBYKxZaSt/+3h8PzVdwToC+KGzMZv6Bu7iUj1yVYdxX3ne7PyMNv Pb/HSSjr1xKSPu8gdEX43WG/LQGTTsL3u6nX3QlG5rCQ7QV7BGiWnWRUyfA98Zz84U7m Lcaw== X-Gm-Message-State: AD7BkJK4J0EU/w8gGyN1wM/qoGzjBfW12+Rr1V28x9/66O2MFIPerHueVn7lMnXfCNAisA== X-Received: by 10.107.132.205 with SMTP id o74mr200835ioi.66.1456964738644; Wed, 02 Mar 2016 16:25:38 -0800 (PST) Received: from [192.168.0.6] (d199-74-164-53.col.wideopenwest.com. [74.199.53.164]) by smtp.gmail.com with ESMTPSA id gb5sm2666716igd.14.2016.03.02.16.25.37 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 02 Mar 2016 16:25:37 -0800 (PST) From: Programmingkid Date: Wed, 2 Mar 2016 19:25:36 -0500 Message-Id: To: Kevin Wolf , qemu-devel qemu-devel Mime-Version: 1.0 (Apple Message framework v1084) X-Mailer: Apple Mail (2.1084) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2607:f8b0:4001:c06::243 Cc: Jeff Cody Subject: [Qemu-devel] [PATCH v15] block/raw-posix.c: Make physical devices usable in QEMU under Mac OS X host X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, MIME_QP_LONG_LINE, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Mac OS X can be picky when it comes to allowing the user to use physical devices in QEMU. Most mounted volumes appear to be off limits to QEMU. If an issue is detected, a message is displayed showing the user how to unmount a volume. Now QEMU uses both CD and DVD media. Signed-off-by: John Arbuckle --- Replaced one "return -1" with "return -ENOENT". Replaced another "return -1" with "return ret". Removed trailing whitespace. This patch is also attached as an email attachment. git send-email does not work on my system :( block/raw-posix.c | 165 +++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 126 insertions(+), 39 deletions(-) diff --git a/block/raw-posix.c b/block/raw-posix.c index 8866121..eb50c02 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -44,6 +44,7 @@ #include #include //#include +#include #include #endif @@ -1965,33 +1966,47 @@ BlockDriver bdrv_file = { /* host device */ #if defined(__APPLE__) && defined(__MACH__) -static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ); static kern_return_t GetBSDPath(io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize, int flags); -kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) +static char *FindEjectableOpticalMedia(io_iterator_t *mediaIterator) { - kern_return_t kernResult; + kern_return_t kernResult = KERN_FAILURE; mach_port_t masterPort; CFMutableDictionaryRef classesToMatch; + const char *matching_array[] = {kIODVDMediaClass, kIOCDMediaClass}; + char *mediaType = NULL; kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); if ( KERN_SUCCESS != kernResult ) { printf( "IOMasterPort returned %d\n", kernResult ); } - classesToMatch = IOServiceMatching( kIOCDMediaClass ); - if ( classesToMatch == NULL ) { - printf( "IOServiceMatching returned a NULL dictionary.\n" ); - } else { - CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); - } - kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); - if ( KERN_SUCCESS != kernResult ) - { - printf( "IOServiceGetMatchingServices returned %d\n", kernResult ); - } + int index; + for (index = 0; index < ARRAY_SIZE(matching_array); index++) { + classesToMatch = IOServiceMatching(matching_array[index]); + if (classesToMatch == NULL) { + error_report("IOServiceMatching returned NULL for %s", + matching_array[index]); + continue; + } + CFDictionarySetValue(classesToMatch, CFSTR(kIOMediaEjectableKey), + kCFBooleanTrue); + kernResult = IOServiceGetMatchingServices(masterPort, classesToMatch, + mediaIterator); + if (kernResult != KERN_SUCCESS) { + error_report("Note: IOServiceGetMatchingServices returned %d", + kernResult); + continue; + } - return kernResult; + /* If a match was found, leave the loop */ + if (*mediaIterator != 0) { + DPRINTF("Matching using %s\n", matching_array[index]); + mediaType = g_strdup(matching_array[index]); + break; + } + } + return mediaType; } kern_return_t GetBSDPath(io_iterator_t mediaIterator, char *bsdPath, @@ -2023,7 +2038,46 @@ kern_return_t GetBSDPath(io_iterator_t mediaIterator, char *bsdPath, return kernResult; } -#endif +/* Sets up a real cdrom for use in QEMU */ +static bool setup_cdrom(char *bsd_path, Error **errp) +{ + int index, num_of_test_partitions = 2, fd; + char test_partition[MAXPATHLEN]; + bool partition_found = false; + + /* look for a working partition */ + for (index = 0; index < num_of_test_partitions; index++) { + snprintf(test_partition, sizeof(test_partition), "%ss%d", bsd_path, + index); + fd = qemu_open(test_partition, O_RDONLY | O_BINARY | O_LARGEFILE); + if (fd >= 0) { + partition_found = true; + qemu_close(fd); + break; + } + } + + /* if a working partition on the device was not found */ + if (partition_found == false) { + error_setg(errp, "Failed to find a working partition on disc"); + } else { + DPRINTF("Using %s as optical disc\n", test_partition); + pstrcpy(bsd_path, MAXPATHLEN, test_partition); + } + return partition_found; +} + +/* Prints directions on mounting and unmounting a device */ +static void print_unmounting_directions(const char *file_name) +{ + error_report("If device %s is mounted on the desktop, unmount" + " it first before using it in QEMU", file_name); + error_report("Command to unmount device: diskutil unmountDisk %s", + file_name); + error_report("Command to mount device: diskutil mountDisk %s", file_name); +} + +#endif /* defined(__APPLE__) && defined(__MACH__) */ static int hdev_probe_device(const char *filename) { @@ -2114,33 +2168,57 @@ static int hdev_open(BlockDriverState *bs, QDict *options, int flags, #if defined(__APPLE__) && defined(__MACH__) const char *filename = qdict_get_str(options, "filename"); + char bsd_path[MAXPATHLEN] = ""; + bool error_occurred = false; + + /* If using a real cdrom */ + if (strcmp(filename, "/dev/cdrom") == 0) { + char *mediaType = NULL; + kern_return_t ret_val; + io_iterator_t mediaIterator = 0; + + mediaType = FindEjectableOpticalMedia(&mediaIterator); + if (mediaType == NULL) { + error_setg(errp, "Please make sure your CD/DVD is in the optical" + " drive"); + error_occurred = true; + goto hdev_open_Mac_error; + } - if (strstart(filename, "/dev/cdrom", NULL)) { - kern_return_t kernResult; - io_iterator_t mediaIterator; - char bsdPath[ MAXPATHLEN ]; - int fd; - - kernResult = FindEjectableCDMedia( &mediaIterator ); - kernResult = GetBSDPath(mediaIterator, bsdPath, sizeof(bsdPath), - flags); - if ( bsdPath[ 0 ] != '\0' ) { - strcat(bsdPath,"s0"); - /* some CDs don't have a partition 0 */ - fd = qemu_open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); - if (fd < 0) { - bsdPath[strlen(bsdPath)-1] = '1'; - } else { - qemu_close(fd); - } - filename = bsdPath; - qdict_put(options, "filename", qstring_from_str(filename)); + ret_val = GetBSDPath(mediaIterator, bsd_path, sizeof(bsd_path), flags); + if (ret_val != KERN_SUCCESS) { + error_setg(errp, "Could not get BSD path for optical drive"); + error_occurred = true; + goto hdev_open_Mac_error; + } + + /* If a real optical drive was not found */ + if (bsd_path[0] == '\0') { + error_setg(errp, "Failed to obtain bsd path for optical drive"); + error_occurred = true; + goto hdev_open_Mac_error; + } + + /* If using a cdrom disc and finding a partition on the disc failed */ + if (strncmp(mediaType, kIOCDMediaClass, 9) == 0 && + setup_cdrom(bsd_path, errp) == false) { + print_unmounting_directions(bsd_path); + error_occurred = true; + goto hdev_open_Mac_error; } - if ( mediaIterator ) - IOObjectRelease( mediaIterator ); + qdict_put(options, "filename", qstring_from_str(bsd_path)); + +hdev_open_Mac_error: + g_free(mediaType); + if (mediaIterator) { + IOObjectRelease(mediaIterator); + } + if (error_occurred) { + return -ENOENT; + } } -#endif +#endif /* defined(__APPLE__) && defined(__MACH__) */ s->type = FTYPE_FILE; @@ -2149,6 +2227,15 @@ static int hdev_open(BlockDriverState *bs, QDict *options, int flags, if (local_err) { error_propagate(errp, local_err); } +#if defined(__APPLE__) && defined(__MACH__) + if (*bsd_path) { + filename = bsd_path; + } + /* if a physical device experienced an error while being opened */ + if (strncmp(filename, "/dev/", 5) == 0) { + print_unmounting_directions(filename); + } +#endif /* defined(__APPLE__) && defined(__MACH__) */ return ret; }