From patchwork Tue Mar 29 15:08:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 8688101 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 0E8D7C0553 for ; Tue, 29 Mar 2016 15:16:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2AA3B201CE for ; Tue, 29 Mar 2016 15:16:19 +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 45422201B9 for ; Tue, 29 Mar 2016 15:16:13 +0000 (UTC) Received: from localhost ([::1]:47757 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1akvNM-0005Lw-JJ for patchwork-qemu-devel@patchwork.kernel.org; Tue, 29 Mar 2016 11:16:12 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39747) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1akvGt-0002l4-7J for qemu-devel@nongnu.org; Tue, 29 Mar 2016 11:09:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1akvGp-00065d-A0 for qemu-devel@nongnu.org; Tue, 29 Mar 2016 11:09:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37516) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1akvGh-000623-6z; Tue, 29 Mar 2016 11:09:19 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id E6DE78E231; Tue, 29 Mar 2016 15:09:18 +0000 (UTC) Received: from noname.redhat.com (ovpn-116-120.ams2.redhat.com [10.36.116.120]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u2TF912i011786; Tue, 29 Mar 2016 11:09:17 -0400 From: Kevin Wolf To: qemu-block@nongnu.org Date: Tue, 29 Mar 2016 17:08:07 +0200 Message-Id: <1459264128-12761-8-git-send-email-kwolf@redhat.com> In-Reply-To: <1459264128-12761-1-git-send-email-kwolf@redhat.com> References: <1459264128-12761-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: kwolf@redhat.com, qemu-devel@nongnu.org Subject: [Qemu-devel] [PULL 07/48] 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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable 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 From: Programmingkid 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 Signed-off-by: Kevin Wolf --- 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; }