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be7967ddcc
freebsd-skq/sys
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jilles be7967ddcc sem: Restart the POSIX sem_* calls after signals with SA_RESTART set. 
Programs often do not expect an [EINTR] return from sem_wait() and POSIX
only allows it if the signal was installed without SA_RESTART. The timeout
in sem_timedwait() is absolute so it can be restarted normally.

The umtx call can be invoked with a relative timeout and in that case
[ERESTART] must be changed to [EINTR]. However, libc does not do this.

The old POSIX semaphore implementation did this correctly (before r249566),
unlike the new umtx one.

It may be desirable to avoid [EINTR] completely, which matches the pthread
functions and is explicitly permitted by POSIX. However, the kernel must
return [EINTR] at least for signals with SA_RESTART clear, otherwise pthread
cancellation will not abort a semaphore wait. In this commit, only restore
the 8.x behaviour which is also permitted by POSIX.

Discussed with:	jhb
MFC after:	1 week
2013-04-19 10:16:00 +00:00
..
amd64 Print RDSEED, ADX, and SMAP. 2013-04-18 01:21:44 +00:00
arm - Correct mispellings of word resource 2013-04-17 11:47:32 +00:00
boot The CELL fields can be various integer types depending on the platform 2013-04-07 05:53:42 +00:00
bsm Implement chflagsat(2) system call, similar to fchmodat(2), but operates on 2013-03-21 22:59:01 +00:00
cam - Corrrect mispellings of word useful 2013-04-17 11:45:15 +00:00
cddl DTrace: Revert r249367 2013-04-17 02:20:17 +00:00
compat Regen. 2013-04-02 05:30:52 +00:00
conf Move the NFS FHA (File Handle Affinity) code from sys/nfsserver to 2013-04-17 22:42:43 +00:00
contrib Forcibly defining _KERNEL is bad idea. Toss some code so that ip_var.h 2013-04-08 19:20:27 +00:00
crypto When porting XTS-related code from OpenBSD I forgot to update copyright (only 2013-02-20 22:59:53 +00:00
ddb
dev Add a debug statement to log the currently chosen chainmask configuration. 2013-04-19 08:06:45 +00:00
fs When an NFS unmount occurs, once vflush() writes the last dirty 2013-04-18 23:20:16 +00:00
gdb
geom Comment typo fix. 2013-04-16 22:42:40 +00:00
gnu/fs/reiserfs Garbage collect XFS bits which are now already completely disconnected 2013-03-02 15:33:54 +00:00
i386 - Correct spelling in comments 2013-04-17 11:56:11 +00:00
ia64 Remove ctl(4) from GENERIC. Also remove 'options CTL_DISABLE' 2013-04-12 16:25:03 +00:00
isa
kern sem: Restart the POSIX sem_* calls after signals with SA_RESTART set. 2013-04-19 10:16:00 +00:00
kgssapi
libkern Attempt to mitigate poor initialization of arc4 by one-shot 2013-04-19 00:30:52 +00:00
mips Add the static kernel boot environment, needed to actually boot this thing. 2013-04-17 18:26:01 +00:00
modules Fix the uart(4) module build. Without uart_dev_lpc the module cannot be loaded. 2013-04-19 05:46:16 +00:00
net Recover missing arp_ifinit() call. 2013-04-18 20:13:33 +00:00
net80211 Implement a utility function to return the current TX power cap for 2013-04-16 20:36:32 +00:00
netatalk
netgraph - Correct mispellings of the word necessary 2013-04-17 11:42:40 +00:00
netinet - Corrrect mispellings of word useful 2013-04-17 11:45:15 +00:00
netinet6 Fix build after r249543. 2013-04-16 16:59:29 +00:00
netipsec Use IP6STAT_INC/IP6STAT_DEC macros to update ip6 stats. 2013-04-09 07:11:22 +00:00
netipx
netnatm
netpfil Fix ipfw rule validation partially broken by r248552. 2013-04-01 11:28:52 +00:00
netsmb MFC 2013-03-09 18:40:37 +00:00
nfs Move the NFS FHA (File Handle Affinity) code from sys/nfsserver to 2013-04-17 22:42:43 +00:00
nfsclient When an NFS unmount occurs, once vflush() writes the last dirty 2013-04-18 23:20:16 +00:00
nfsserver Move the NFS FHA (File Handle Affinity) code from sys/nfsserver to 2013-04-17 22:42:43 +00:00
nlm
ofed Check for SS_NBIO in the socket state field rather than socket buffer 2013-04-03 20:31:10 +00:00
opencrypto When porting XTS-related code from OpenBSD I forgot to update copyright (only 2013-02-20 22:59:53 +00:00
pc98 - Correct mispellings of word resource 2013-04-17 11:47:32 +00:00
pci - Corrrect mispellings of word useful 2013-04-17 11:45:15 +00:00
powerpc Generate a LINT for powerpc and for powerpc64. 2013-04-11 22:18:20 +00:00
rpc Fix a potential socket leak in the NFS server. If a client closes its 2013-04-08 19:03:01 +00:00
security MFC 2013-03-08 00:03:07 +00:00
sparc64 Remove ctl(4) from GENERIC. Also remove 'options CTL_DISABLE' 2013-04-12 16:25:03 +00:00
sys Attempt to mitigate poor initialization of arc4 by one-shot 2013-04-19 00:30:52 +00:00
teken
tools MFC 2013-02-21 21:59:35 +00:00
ufs - Correct mispellings of the word occurrence 2013-04-17 11:40:10 +00:00
vm When calculating the number of reserved nodes, discount the pages that will 2013-04-18 05:34:33 +00:00
x86 Introduce kern.timecounter.smp_tsc_adjust tunable (disabled by default) and 2013-04-18 17:07:04 +00:00
xdr Use m_get() and m_getcl() instead of compat macros. 2013-03-15 10:21:18 +00:00
xen
Makefile MFC 2013-03-13 01:05:42 +00:00