d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
75c586a4c8
freebsd-dev/sys/kern
History
Konstantin Belousov 75c586a4c8 In r198506, kern_sigsuspend() started doing cursig/postsig loop to make 
sure that a signal was delivered to the thread before returning from
syscall. Signal delivery puts new return frame on the user stack, and
modifies trap frame to enter signal handler. As a consequence, syscall
return code sets EINTR as error return for signal frame, instead of the
syscall return.

Also, for ia64, due to different registers layout for those two kind of
frames, usermode sigsegfaulted when returned from signal handler.

Use newly-introduced cpu_set_syscall_retval(9) to set syscall result,
and return EJUSTRETURN from kern_sigsuspend() to prevent syscall return
code from modifying this frame [1].

Another issue is that pending SIGCONT might be cancelled by SIGSTOP,
causing postsig() not to deliver any catched signal [2]. Modify
postsig() to return 1 if signal was posted, and 0 otherwise, and use
this in the kern_sigsuspend loop.

Proposed by:	marcel [1]
Noted by:	davidxu [2]
Reviewed by:	marcel, davidxu
MFC after:	1 month
2009-11-10 11:46:53 +00:00
..
bus_if.m Add a facility for associating optional descriptions with active interrupt 2009-10-15 14:54:35 +00:00
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh
imgact_aout.c Add sv_flags field to struct sysentvec with intention to provide description 2008-11-22 12:36:15 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c If ET_DYN binary has non-zero base address for some reason, honour it 2009-10-18 12:57:48 +00:00
imgact_gzip.c
imgact_shell.c Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread 2008-08-28 15:23:18 +00:00
inflate.c
init_main.c Random number generator initialization cleanup: 2009-10-20 16:36:51 +00:00
init_sysent.c Regenerate 2009-10-27 11:01:15 +00:00
kern_acct.c Do not use casts (int *)0 and (struct thread *)0 for the arguments of 2009-06-16 15:13:45 +00:00
kern_alq.c Add another flags argument to vn_open_cred. Use it to specify that some 2009-06-21 13:41:32 +00:00
kern_clock.c Mark the clock sysctls as MPSAFE. 2009-05-18 12:03:43 +00:00
kern_condvar.c Remove unused variables p' and unneeded assignments of rval'. 2009-02-26 13:00:13 +00:00
kern_conf.c Extend the device pager to support different memory attributes on different 2009-08-28 14:06:55 +00:00
kern_cons.c Allow multiple console devices per driver without insane code duplication. 2009-08-24 10:53:30 +00:00
kern_context.c In r197963, a race with thread being selected for signal delivery 2009-10-27 10:47:58 +00:00
kern_cpu.c Provide a new CPU device driver ivar to report the nominal speed of the 2009-05-31 08:59:15 +00:00
kern_cpuset.c Another nit that both I and ispell missed. 2009-10-26 18:32:06 +00:00
kern_ctf.c Add the CTF source file which gets shared with link_elf.c and link_elf_obj.c. 2008-05-23 03:04:27 +00:00
kern_descrip.c Add two new fcntls to enable/disable read-ahead: 2009-09-28 16:59:47 +00:00
kern_dtrace.c Remove code that isn't required. It actually breaks the case where KDTRACE_HOOKS 2008-06-16 04:44:29 +00:00
kern_environment.c Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC 2009-06-05 14:55:22 +00:00
kern_event.c Postpone dropping fp till both kq_global and kqueue mutexes are 2009-10-10 14:56:34 +00:00
kern_exec.c - Fix several off-by-one errors when using MAXCOMLEN. The p_comm[] and 2009-10-23 15:14:54 +00:00
kern_exit.c Refine r195509, instead of checking that vnode type is VBAD, that is 2009-10-10 21:17:30 +00:00
kern_fail.c fail(9) support: 2009-05-27 16:36:54 +00:00
kern_fork.c Reintroduce the r196640, after fixing the problem with my testing. 2009-09-01 11:41:51 +00:00
kern_idle.c Split P_NOLOAD into a per-thread flag (TDF_NOLOAD). 2009-11-03 16:46:52 +00:00
kern_intr.c Split P_NOLOAD into a per-thread flag (TDF_NOLOAD). 2009-11-03 16:46:52 +00:00
kern_jail.c Revert previous commit and add myself to the list of people who should 2009-09-08 13:19:05 +00:00
kern_kthread.c Reintroduce the r196640, after fixing the problem with my testing. 2009-09-01 11:41:51 +00:00
kern_ktr.c
kern_ktrace.c - Fix several off-by-one errors when using MAXCOMLEN. The p_comm[] and 2009-10-23 15:14:54 +00:00
kern_linker.c Revert previous commit and add myself to the list of people who should 2009-09-08 13:19:05 +00:00
kern_lock.c Save the sack when doing a lockmgr_disown() call. 2009-11-06 22:33:03 +00:00
kern_lockf.c In lf_iteratelocks_vnode, increment state->ls_threads around iterating 2009-06-25 18:54:56 +00:00
kern_lockstat.c Add the OpenSolaris dtrace lockstat provider. The lockstat provider 2009-05-26 20:28:22 +00:00
kern_malloc.c If we're passed garbage in malloc_init(), panic() rather than expecting 2009-06-05 09:16:52 +00:00
kern_mbuf.c Add support to the virtual memory system for configuring machine- 2009-07-12 23:31:20 +00:00
kern_mib.c Add a new sysctl for reporting all of the supported page sizes. 2009-09-18 17:04:57 +00:00
kern_module.c When the SYSINIT() to load a module invokes the MOD_LOAD event successfully, 2008-12-05 16:47:30 +00:00
kern_mtxpool.c Fix a number of style issues in the MALLOC / FREE commit. I've tried to 2008-10-23 20:26:15 +00:00
kern_mutex.c Revert previous commit and add myself to the list of people who should 2009-09-08 13:19:05 +00:00
kern_ntptime.c
kern_osd.c Make the rmlock(9) interface a bit more like the rwlock(9) interface: 2009-05-29 10:52:37 +00:00
kern_physio.c
kern_pmc.c Support sparsely numbered CPUs. 2008-09-22 10:37:02 +00:00
kern_poll.c Rather than fix questionable ifnet list locking in the implementation of 2009-08-15 23:07:43 +00:00
kern_priv.c Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC 2009-06-05 14:55:22 +00:00
kern_proc.c In fill_kinfo_thread, copy the thread's name into struct kinfo_proc even 2009-10-01 21:44:30 +00:00
kern_prot.c Remove the interim vimage containers, struct vimage and struct procg, 2009-07-17 14:48:21 +00:00
kern_resource.c Implement global and per-uid accounting of the anonymous memory. Add 2009-06-23 20:45:22 +00:00
kern_rmlock.c Minor style tweak. 2009-05-29 14:25:51 +00:00
kern_rwlock.c When releasing a read/shared lock we need to use a write memory barrier 2009-09-30 13:26:31 +00:00
kern_sdt.c Add kernel support for the Statically Defined Trace provider. 2008-05-18 19:32:36 +00:00
kern_sema.c
kern_shutdown.c Don't bother copying the name of a kproc or kthread out into a temporary 2009-10-23 15:09:51 +00:00
kern_sig.c In r198506, kern_sigsuspend() started doing cursig/postsig loop to make 2009-11-10 11:46:53 +00:00
kern_subr.c Constify prime numbers. 2009-08-23 09:55:06 +00:00
kern_switch.c - Use DPCPU for SCHED_STATS. This is somewhat awkward because the 2009-06-25 01:33:51 +00:00
kern_sx.c When releasing a read/shared lock we need to use a write memory barrier 2009-09-30 13:26:31 +00:00
kern_synch.c Add new msleep(9) flag PBDY that shall be specified together with 2009-07-14 22:52:46 +00:00
kern_syscalls.c Various style fixes. 7 space indent is just odd. 2008-09-18 20:10:11 +00:00
kern_sysctl.c Make it possible to change the vnet sysctl variables on jails 2009-08-13 10:26:34 +00:00
kern_tc.c Remove conditionally compiled time counter statistics; tools like 2009-04-11 22:01:40 +00:00
kern_thr.c Currently, when signal is delivered to the process and there is a thread 2009-10-11 16:49:30 +00:00
kern_thread.c Inform hwpmc(4) of a thread's impending demise prior to invoking sched_throw(). 2009-10-25 04:34:47 +00:00
kern_time.c Remove VOP_LEASE and supporting functions. This hasn't been used since 2009-04-10 10:52:19 +00:00
kern_timeout.c Make sure callouts are not processed one tick late. 2009-09-12 21:44:34 +00:00
kern_umtx.c In function do_rw_wrlock, when a writer got an error and before returning, 2009-09-25 00:03:13 +00:00
kern_uuid.c Rework global locks for interface list and index management, correcting 2009-08-23 20:40:19 +00:00
kern_xxx.c Place hostnames and similar information fully under the prison system. 2009-05-29 21:27:12 +00:00
ksched.c
link_elf_obj.c Add macros VNET_SETNAME and VNET_SYMPREFIX, and expose to userspace if 2009-07-20 07:50:50 +00:00
link_elf.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
linker_if.m strict kobj signatures: linker_if fixes 2009-06-11 17:05:45 +00:00
Make.tags.inc Catch up with the disappearance of sys/dev/hfa. 2008-12-01 14:34:42 +00:00
Makefile
makesyscalls.sh Add a new COMPAT7 flag for FreeBSD 7.x compatibility system calls. 2009-06-24 13:36:37 +00:00
md4c.c
md5c.c
p1003_1b.c
posix4_mib.c
sched_4bsd.c Split P_NOLOAD into a per-thread flag (TDF_NOLOAD). 2009-11-03 16:46:52 +00:00
sched_ule.c Split P_NOLOAD into a per-thread flag (TDF_NOLOAD). 2009-11-03 16:46:52 +00:00
serdev_if.m
stack_protector.c Random number generator initialization cleanup: 2009-10-20 16:36:51 +00:00
subr_acl_nfs4.c Add pieces of infrastructure required for NFSv4 ACL support in UFS. 2009-09-22 15:15:03 +00:00
subr_acl_posix1e.c Provide default implementation for VOP_ACCESS(9), so that filesystems which 2009-10-01 17:22:03 +00:00
subr_autoconf.c Prefer ANSI function definitions to K&R ones. 2009-02-03 07:52:07 +00:00
subr_blist.c Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
subr_bufring.c - bump __FreeBSD version to reflect added buf_ring, memory barriers, 2008-11-22 05:55:56 +00:00
subr_bus.c - Fix several off-by-one errors when using MAXCOMLEN. The p_comm[] and 2009-10-23 15:14:54 +00:00
subr_clock.c Now that all platforms use genclock, shuffle things around slightly 2008-04-22 19:38:30 +00:00
subr_devstat.c Don't allocate new unnecessary pages when devstat_alloc() looses the 2009-09-18 13:48:38 +00:00
subr_disk.c Clarify and reimplement the bioq API so that bioq_disksort() has 2009-02-13 11:36:32 +00:00
subr_eventhandler.c
subr_fattime.c
subr_firmware.c Use NULL in preference to 0 for pointers. 2009-02-03 07:51:11 +00:00
subr_hints.c
subr_kdb.c * Completely Remove the option STOP_NMI from the kernel. This option 2009-08-13 17:09:45 +00:00
subr_kobj.c Use NULL in preference to 0 in pointer contexts. 2009-02-03 07:54:42 +00:00
subr_lock.c - Implement a new mechanism for resetting lock profiling. We now 2009-03-15 06:41:47 +00:00
subr_log.c Make /dev/klog and kern.msgbuf* MPSAFE. 2009-11-03 21:06:19 +00:00
subr_mbpool.c
subr_mchain.c
subr_module.c
subr_msgbuf.c
subr_param.c Increase HZ_VM from 10 to 100. While 10 hz saves cpu time 2009-07-08 01:09:12 +00:00
subr_pcpu.c Add ddb show dpcpu_off command to ease dpcpu memory debugging. 2009-08-12 12:06:16 +00:00
subr_power.c
subr_prf.c Make /dev/klog and kern.msgbuf* MPSAFE. 2009-11-03 21:06:19 +00:00
subr_prof.c Use ANSI function definition for profil. 2009-02-03 07:52:36 +00:00
subr_rman.c sysctl_rman: report shared resources to devinfo 2009-05-19 14:08:21 +00:00
subr_rtc.c Clean up MI inittodr(9) and kill noop code. 2009-03-23 21:16:21 +00:00
subr_sbuf.c Switch to simplified BSD license (with phk's approval), plus whitespace 2008-08-09 10:26:21 +00:00
subr_scanf.c
subr_sglist.c This patch fixes two bugs in sglist(9) and improves robustness of the API via 2009-08-21 02:59:07 +00:00
subr_sleepqueue.c Add new msleep(9) flag PBDY that shall be specified together with 2009-07-14 22:52:46 +00:00
subr_smp.c Remove forward_roundrobin(), it is unused for quite some time. 2009-09-21 13:09:56 +00:00
subr_stack.c Add stack_print_short() and stack_print_short_ddb() interfaces to 2009-06-24 12:06:15 +00:00
subr_taskqueue.c - Fix several off-by-one errors when using MAXCOMLEN. The p_comm[] and 2009-10-23 15:14:54 +00:00
subr_trap.c Current pselect(3) is implemented in usermode and thus vulnerable to 2009-10-27 10:55:34 +00:00
subr_turnstile.c Make ddb command registration dynamic so modules can extend 2008-09-15 22:45:14 +00:00
subr_unit.c
subr_witness.c Change w_notrunning and w_stillcold from pointer to array so that sizeof 2009-09-06 13:31:05 +00:00
sys_generic.c Current pselect(3) is implemented in usermode and thus vulnerable to 2009-10-27 10:55:34 +00:00
sys_pipe.c Use C99 initialization for struct filterops. 2009-09-12 20:03:45 +00:00
sys_process.c Update a comment to reflect the previous change. 2009-10-25 02:48:29 +00:00
sys_socket.c Merge the remainder of kern_vimage.c and vimage.h into vnet.c and 2009-08-01 19:26:27 +00:00
syscalls.c Regenerate 2009-10-27 11:01:15 +00:00
syscalls.master Current pselect(3) is implemented in usermode and thus vulnerable to 2009-10-27 10:55:34 +00:00
systrace_args.c Regenerate 2009-10-27 11:01:15 +00:00
sysv_ipc.c Change the ABI of some of the structures used by the SYSV IPC API: 2009-06-24 21:10:52 +00:00
sysv_msg.c Change the ABI of some of the structures used by the SYSV IPC API: 2009-06-24 21:10:52 +00:00
sysv_sem.c Change the ABI of some of the structures used by the SYSV IPC API: 2009-06-24 21:10:52 +00:00
sysv_shm.c - Rename tunable kern.ipc.shmmaxpgs to kern.ipc.shmall. 2009-10-24 19:00:58 +00:00
tty_compat.c Fix an awful bug inside our COMPAT_43TTY code. 2008-09-04 16:30:53 +00:00
tty_info.c Print an extra newline when not at the first column already. 2009-05-17 16:17:48 +00:00
tty_inq.c Enable secure TTY input buffer flushing by default. 2009-05-21 16:48:06 +00:00
tty_outq.c Use unsigned longs for the TTY's sysctl stats. 2009-02-26 10:28:32 +00:00
tty_pts.c Use C99 initialization for struct filterops. 2009-09-12 20:03:45 +00:00
tty_tty.c Remove unneeded Giant locking of /dev/tty. 2008-06-03 12:38:00 +00:00
tty_ttydisc.c Print backspaces after echoing an EOF. 2009-10-17 08:59:41 +00:00
tty.c Properly set the low watermarks when reducing the baud rate. 2009-10-19 07:17:37 +00:00
uipc_accf.c Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
uipc_cow.c Extend the struct vm_page wire_count to u_int to avoid the overflow 2009-01-03 13:24:08 +00:00
uipc_debug.c Add missing socket options. 2009-05-26 09:19:21 +00:00
uipc_domain.c When registering a protocol to an existing protocol domain via 2009-08-24 10:03:41 +00:00
uipc_mbuf2.c Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC 2009-06-05 14:55:22 +00:00
uipc_mbuf.c Add m_mbuftouio() helper function to copy(out) an arbitrary 2009-06-22 22:20:38 +00:00
uipc_mqueue.c Use C99 initialization for struct filterops. 2009-09-12 20:03:45 +00:00
uipc_sem.c Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC 2009-06-05 14:55:22 +00:00
uipc_shm.c Implement global and per-uid accounting of the anonymous memory. Add 2009-06-23 20:45:22 +00:00
uipc_sockbuf.c In sbappendstream_locked() demote all incoming packet mbufs (and 2009-06-22 21:46:40 +00:00
uipc_socket.c Don't comment on stream socket handling in sosend_dgram, since that's 2009-10-02 21:31:15 +00:00
uipc_syscalls.c If socket buffer space appears to be lower then sum of count of already 2009-11-03 12:52:35 +00:00
uipc_usrreq.c Fix build on amd64, where sysctl arg1 is a pointer. 2009-10-05 22:23:12 +00:00
vfs_acl.c Fix build. 2009-11-04 08:25:58 +00:00
vfs_aio.c Use C99 initialization for struct filterops. 2009-09-12 20:03:45 +00:00
vfs_bio.c When buffer write is failed, it is wrong for brelse() to invalidate 2009-07-19 20:25:59 +00:00
vfs_cache.c Correctly handle unlock for !MAKEENTRY case, after successfull attempt of 2009-08-14 10:57:28 +00:00
vfs_cluster.c Remove a stale comment. The very same revision (r85511) that introduced 2009-06-30 19:39:17 +00:00
vfs_default.c While VAPPEND without VWRITE makes sense for VOP_ACCESSX(9) (e.g. to check 2009-11-04 06:47:14 +00:00
vfs_export.c Set the prison in NFS anon and GSS SVC creds. 2009-09-28 18:07:16 +00:00
vfs_extattr.c Replace AUDIT_ARG() with variable argument macros with a set more more 2009-06-27 13:58:44 +00:00
vfs_hash.c
vfs_init.c Expand the scope of the sysctllock sx lock to protect the sysctl tree itself. 2009-02-06 14:51:32 +00:00
vfs_lookup.c Eliminate ARG_UPATH[12] arguments to AUDIT_ARG_UPATH() and instead 2009-07-29 07:44:43 +00:00
vfs_mount.c Add suggestion for zfs root. 2009-11-08 09:54:25 +00:00
vfs_subr.c Provide default implementation for VOP_ACCESS(9), so that filesystems which 2009-10-01 17:22:03 +00:00
vfs_syscalls.c In fhopen, vfs_ref() the mount point while vnode is unlocked, to prevent 2009-09-06 11:44:46 +00:00
vfs_vnops.c Revert r198874, pending further discussion. 2009-11-04 07:14:16 +00:00
vnode_if.src Add explicit struct ucred * argument for VOP_VPTOCNP, to be used by 2009-06-21 19:21:01 +00:00