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qemu/util
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Marc-André Lureau f04cf9239a util: add linux-only memfd fallback 
Implement memfd_create() fallback if not available in system libc.
memfd_create() is still not included in glibc today, atlhough it's been
available since Linux 3.17 in Oct 2014.

memfd has numerous advantages over traditional shm/mmap for ipc memory
sharing with fd handler, which we are going to make use of for
vhost-user logging memory in following patches.

The next patches are going to introduce helpers to use best practices of
memfd usage and provide some compatibility fallback. memfd.c is thus
temporarily useless and eventually empty if memfd_create() is provided
by the system.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
 		2015-10-22 14:34:48 +03:00
..
Makefile.objs util: add linux-only memfd fallback 2015-10-22 14:34:48 +03:00
acl.c acl: fix memory leak 2014-11-17 11:48:56 +01:00
bitmap.c maint: remove / fix many doubled words 2015-09-11 10:21:38 +03:00
bitops.c bitops: unroll while loop in find_next_bit() 2013-03-26 13:32:32 +01:00
compatfd.c util: Remove unused functions 2015-04-30 16:05:48 +03:00
crc32c.c qemu: add castagnoli crc32c checksum algorithm 2013-05-03 10:31:58 +02:00
cutils.c utils: rename strtosz to use qemu prefix 2015-09-25 12:04:41 +02:00
envlist.c utils: drop strtok_r from envlist_parse 2015-02-16 16:20:02 -06:00
error.c error: New error_fatal 2015-09-18 14:38:08 +02:00
event_notifier-posix.c event-notifier: Always return 0 for posix implementation 2015-06-12 13:26:21 +01:00
event_notifier-win32.c build: move libqemuutil.a components to util/ 2013-01-12 18:42:50 +01:00
fifo8.c savevm: Remove all the unneeded version_minimum_id_old (arm) 2014-05-13 16:09:35 +01:00
getauxval.c util: Move general qemu_getauxval to util/getauxval.c 2014-09-09 13:13:05 +02:00
hbitmap.c util/hbitmap: Add an API to reset all set bits in hbitmap 2015-06-23 15:06:16 +01:00
hexdump.c Rename hexdump to avoid FreeBSD libutil conflict 2013-05-20 08:20:08 -05:00
host-utils.c util: Don't link host-utils.o if it's empty 2014-09-09 13:13:05 +02:00
id.c util: Emancipate id_wellformed() from QemuOpts 2014-10-03 10:30:33 +01:00
iov.c iov: don't touch iov in iov_send_recv() 2015-06-23 16:05:34 +01:00
memfd.c util: add linux-only memfd fallback 2015-10-22 14:34:48 +03:00
mmap-alloc.c exec: factor out duplicate mmap code 2015-10-21 09:24:44 +03:00
module.c module: Don't complain when a module is absent 2014-07-18 14:57:35 +02:00
notify.c notify: add NotiferWithReturn so notifier list can abort 2013-06-28 09:20:26 +02:00
osdep.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
oslib-posix.c exec: factor out duplicate mmap code 2015-10-21 09:24:44 +03:00
oslib-win32.c oslib-win32: only provide localtime_r/gmtime_r if missing 2015-09-24 21:13:49 +02:00
path.c util/path: Use the GLib memory allocation routines 2014-08-24 13:16:32 +04:00
qemu-config.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qemu-error.c error: only prepend timestamp on stderr 2015-09-18 14:34:39 +02:00
qemu-openpty.c util/qemu-openpty: fix build with musl libc by include termios.h as fallback 2014-06-11 00:25:06 +01:00
qemu-option.c hmp: Allow for error message hints on HMP 2015-09-18 14:34:39 +02:00
qemu-progress.c qemu-progress: Fix progress printing on SIGUSR1 2014-01-24 14:33:00 +01:00
qemu-sockets.c util/qemu-sockets: improve ai_flag hints for ipv6 hosts 2015-06-23 20:23:39 +03:00
qemu-thread-posix.c * Support for jemalloc 2015-09-14 16:13:16 +01:00
qemu-thread-win32.c qemu-thread: add a fast path to the Win32 QemuEvent 2015-09-24 20:52:28 +02:00
qemu-timer-common.c Allow clock_gettime() monotonic clock to be utilized on more OS's 2013-04-04 20:22:45 -05:00
rcu.c Revert "rcu: init rcu_registry_lock after fork" 2015-09-16 17:33:32 +02:00
readline.c readline: Clear screen on form feed. 2014-06-11 10:10:29 -04:00
rfifolock.c rfifolock: add recursive FIFO lock 2014-03-13 14:42:21 +01:00
throttle.c throttle: refuse bps_max/iops_max without bps/iops 2015-08-05 12:53:48 +01:00
unicode.c unicode: New mod_utf8_codepoint() 2013-04-13 19:39:59 +00:00
uri.c util/uri: Add overflow check to rfc3986_parse_port 2015-03-18 12:05:31 +01:00