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* keep the PID file locked for the lifetime of the processLaszlo Ersek2012-02-011-1/+1
| | | | | | | | | | | | | | | | | | | | | The lockf() call in qemu_create_pidfile() aims at ensuring mutual exclusion. We shouldn't close the pidfile on success (as introduced by commit 1bbd1592), because that drops the lock as well [1]: "File locks shall be released on first close by the locking process of any file descriptor for the file." Coverity may complain again about the leaked file descriptor; let's worry about that later. v1->v2: - add reference to 1bbd1592 - explain the intentional fd leak in the source [1] http://pubs.opengroup.org/onlinepubs/9699919799/functions/lockf.html Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* link the main loop and its dependencies into the toolsPaolo Bonzini2011-12-221-42/+0Star
| | | | | | | | Using the main loop code from QEMU enables tools to operate fully asynchronously. Advantages include better Windows portability (for some definition of portability) over glib's. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* os-posix: Plug fd leak in qemu_create_pidfile()Markus Armbruster2011-11-111-0/+3
| | | | | | | Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Use glib memory allocation and free functionsAnthony Liguori2011-08-211-2/+2
| | | | | | qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* os-posix: set groups properly for -runasStefan Hajnoczi2011-07-121-0/+6
| | | | | | | | | | | | | Andrew Griffiths reports that -runas does not set supplementary group IDs. This means that gid 0 (root) is not dropped when switching to an unprivileged user. Add an initgroups(3) call to use the -runas user's /etc/groups membership to update the supplementary group IDs. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Introduce format string for pid_tAndreas Färber2011-06-151-1/+1
| | | | | | | | | | | | | | | | | | | | | BeOS and Haiku on i386 use long for 32-bit types, including pid_t. Using %d with pid_t therefore results in a warning. Unfortunately POSIX:2008 does not define a PRId* string for pid_t. In some places pid_t was previously casted to long and %ld hardcoded. The predecessor of this patch added another upcast for the simpletrace filename but was not applied to date. Since new uses of pid_t with %d keep creeping in, let's instead define an OS-dependent format string and use that consistently. Cc: Stefan Hajnoczi <stefanha@gmail.com> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Ingo Weinhold <ingo_weinhold@gmx.de> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* add a service to reap zombies, use it in SLIRPPaolo Bonzini2011-03-291-9/+0Star
| | | | | | | | | | | | | SLIRP -smb support wants to fork a process and forget about reaping it. To please it, add a generic service to register a process id and let QEMU reap it. In the future it could be enhanced to pass a status, but this would be unused. With this in place, the SIGCHLD signal handler would not stomp on pclose anymore. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* report that QEMU process was killed by a signalGleb Natapov2011-03-261-3/+4
| | | | | | | | | Currently when rogue script kills QEMU process (using TERM/INT/HUP signal) it looks indistinguishable from system shutdown. Lets report that QEMU was killed and leave some clues about the killer identity. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Expose thread_id in info cpusJan Kiszka2011-03-161-0/+10
| | | | | | | | | | | Based on patch by Glauber Costa: To allow management applications like libvirt to apply CPU affinities to the VCPU threads, expose their ID via info cpus. This patch provides the pre-existing and used interface from qemu-kvm. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* Separate qemu_pidfile() into OS specific versionsJes Sorensen2010-10-301-0/+21
| | | | | Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* We only support eventfd under POSIX, move qemu_eventfd() to os-posix.cJes Sorensen2010-10-301-0/+32
| | | | | Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Use ARRAY_SIZE macroBlue Swirl2010-08-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace array size calculations with ARRAY_SIZE macro. Implemented with this Coccinelle semantic patch, adapted from Linux kernel: @@ type T; T[] E; @@ - (sizeof(E)/sizeof(*E)) + ARRAY_SIZE(E) @@ type T; T[] E; @@ - (sizeof(E)/sizeof(E[...])) + ARRAY_SIZE(E) @@ type T; T[] E; @@ - (sizeof(E)/sizeof(T)) + ARRAY_SIZE(E) Some files (*-dis.c, tests/*) had to be filtered out. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Include sys/mman.h before qemu-options.hJes Sorensen2010-07-061-0/+2
| | | | | | | | | | | The result of parsing qemu-options.def depends on whehter or not MAP_POPULATE is defined, so make sure to include sys/mman.h before including qemu-options.h. Reported by Frank Arnold. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Move set_proc_name() to OS specific files.Jes Sorensen2010-06-121-0/+24
| | | | | | | | | | | Move handling to change process name to POSIX specific files plus add a better error message to cover the case where the feature isn't supported. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Move line-buffering setup to OS specific files.Jes Sorensen2010-06-121-0/+5
| | | | | | | | | Move line-buffering setup to OS specific files. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Make os_change_process_uid and os_change_root os-posix.c localJes Sorensen2010-06-121-4/+4
| | | | | | | | | | os_change_process_uid() and os_change_root() are now only called from os-posix.c, so no need to keep win32 stubs for them. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Move daemonize handling to OS specific filesJes Sorensen2010-06-121-0/+102
| | | | | | | | | | Move daemonize handling from vl.c to OS specific files. Provide dummy stubs for Win32. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Move chroot handling to OS specific files.Jes Sorensen2010-06-121-0/+19
| | | | | | | | | Move chroot handling to OS specific files. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Move runas handling from vl.c to OS specific files.Jes Sorensen2010-06-121-0/+28
| | | | | | | | | | Move code to handle runas, ie. change of user id of QEMU process to OS specific files and provide dummy stub for Win32. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Introduce OS specific cmdline argument handling and move SMB arg to os-posix.cJes Sorensen2010-06-121-0/+19
| | | | | | | | | | | | | | Introduce OS specific cmdline argument handling by calling os_parse_cmd_args() at the end of switch() statement. Move option enum to qemu-options.h and have it included from os-posix.c and os-win32.c in addition to vl.c. In addition move SMB argument to os-posix.c Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Move find_datadir to OS specific files.Jes Sorensen2010-06-121-0/+64
| | | | | | | | | | This moves the win32 and POSIX versions of find_datadir() to OS specific files, and removes some #ifdef clutter from vl.c Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Move main signal handler setup to os specificfiles.Jes Sorensen2010-06-121-0/+27
| | | | | | | | | Move main signal handler setup to os specific files. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Rename os_setup_signal_handling() to os_setup_early_signal_handling()Jes Sorensen2010-06-121-1/+1
| | | | | | | | | Rename os_setup_signal_handling() to os_setup_early_signal_handling() Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Introduce os-posix.c and create os_setup_signal_handling()Jes Sorensen2010-06-121-0/+41
Introcuce os-posix.c and move posix specific signal handling there. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Richard Henderson <rth@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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