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mirror of https://git.FreeBSD.org/src.git synced 2024-12-26 11:47:31 +00:00
freebsd/sys/kern
Jilles Tjoelker 6d1c58f8a2 Fix select/poll/kqueue for write on reverse direction before first write.
The reverse direction of a pipe is lazily allocated on the first write in
that direction (because pipes are usually used in one direction only).  A
special case is needed to ensure the pipe appears writable before the first
write because there are 0 bytes of pending data in 0 bytes of buffer space
at that point, leaving 0 bytes of data that can be written with the normal
code.

Note that the first write returns [ENOMEM] if kern.ipc.maxpipekva is
exceeded and does not block or return [EAGAIN], so selecting true for write
is correct even in that case.

PR:		kern/93685
Submitted by:	gianni
MFC after:	2 weeks
2011-12-14 22:26:39 +00:00
..
bus_if.m Add a new bus method, BUS_ADJUST_RESOURCE() that is intended to be a 2011-04-29 21:36:45 +00:00
capabilities.conf Add experimental support for process descriptors 2011-08-18 22:51:30 +00:00
clock_if.m
cpufreq_if.m
device_if.m Update comments for DEVICE_PROBE() to reflect that BUS_PROBE_DEFAULT is 2011-05-24 13:22:40 +00:00
genassym.sh
imgact_aout.c Do not trash the argv[0] pointer for an a.out process on amd64. 2011-06-16 22:00:59 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Control the execution permission of the readable segments for 2011-10-15 12:35:18 +00:00
imgact_gzip.c Add accounting for most of the memory-related resources. 2011-04-05 20:23:59 +00:00
imgact_shell.c
inflate.c
init_main.c Remove the long reprecated ``/stand/sysinstall'' from the init_path. 2011-10-27 10:25:11 +00:00
init_sysent.c - Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate() 2011-11-21 01:26:10 +00:00
kern_acct.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_alq.c
kern_clock.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_clocksource.c Set negative quality to TSC timecounter when C3 state is enabled for Intel 2011-06-22 16:40:45 +00:00
kern_condvar.c
kern_conf.c Style. 2011-11-11 04:13:47 +00:00
kern_cons.c
kern_context.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_cpu.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_cpuset.c Add a missing curly bracket 2011-12-05 10:34:52 +00:00
kern_ctf.c The in-kernel CTF parser caches the result of its first attempt to parse 2011-11-08 15:17:54 +00:00
kern_descrip.c Reformat comment to be more readable in standard Xterm. 2011-11-15 01:48:53 +00:00
kern_dtrace.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_environment.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_et.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_event.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_exec.c Do not deliver SIGTRAP on exec as the normal signal, use ptracestop() on 2011-09-27 13:17:02 +00:00
kern_exit.c Fix long-standing thinko regarding maxproc accounting. Basically, 2011-09-17 19:55:32 +00:00
kern_fail.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_ffclock.c Revise the sysctl handling code and restructure the hierarchy of sysctls 2011-12-01 07:19:13 +00:00
kern_fork.c Move some code inside the racct_proc_fork(); it spares a few lock operations 2011-10-03 17:40:55 +00:00
kern_gzio.c
kern_hhook.c Staticize malloc types. 2011-04-13 11:28:46 +00:00
kern_idle.c On multi-core, multi-threaded PPC systems, it is important that the threads 2011-05-31 15:11:43 +00:00
kern_intr.c - Remove the eintrcnt/eintrnames usage and introduce the concept of 2011-07-18 15:19:40 +00:00
kern_jail.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_khelp.c Use the full and proper company name for Swinburne University of Technology 2011-04-12 08:13:18 +00:00
kern_kthread.c Add experimental support for process descriptors 2011-08-18 22:51:30 +00:00
kern_ktr.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_ktrace.c - Fix ktrace leakage if error is set 2011-12-08 03:20:38 +00:00
kern_linker.c Add KLD_DEBUG option. 2011-11-06 08:10:41 +00:00
kern_lock.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
kern_lockf.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_lockstat.c
kern_loginclass.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_malloc.c Eliminate stale numbers from a comment. 2011-12-07 16:27:23 +00:00
kern_mbuf.c
kern_mib.c Define two new sysctl node flags: CTLFLAG_CAPRD and CTLFLAG_CAPRW, which 2011-07-17 23:05:24 +00:00
kern_module.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_mtxpool.c
kern_mutex.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
kern_ntptime.c Document a large number of currently undocumented sysctls. While here 2011-12-13 00:38:50 +00:00
kern_osd.c
kern_physio.c
kern_pmc.c Commit the support for removing cpumask_t and replacing it directly with 2011-05-05 14:39:14 +00:00
kern_poll.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_priv.c
kern_proc.c Really protect kern.proc.ps_strings sysctls with p_candebug(). This 2011-12-06 06:40:14 +00:00
kern_prot.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_racct.c kern_racct: move sys/systm.h inclusion to its proper place 2011-12-12 07:46:10 +00:00
kern_rctl.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_resource.c - Add a sysctl to allow non-root users the ability to set idle 2011-12-13 14:00:27 +00:00
kern_rmlock.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
kern_rwlock.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
kern_sdt.c
kern_sema.c
kern_shutdown.c Match other formatting. 2011-12-14 02:31:32 +00:00
kern_sig.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
kern_switch.c critical_exit: ignore td_owepreempt if kdb_active is set 2011-12-04 21:27:41 +00:00
kern_sx.c put sys/systm.h at its proper place or add it if missing 2011-12-12 10:05:13 +00:00
kern_synch.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
kern_syscalls.c
kern_sysctl.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_tc.c Do away with the somewhat clunky sysclock_ops structure and associated code, 2011-11-29 08:33:40 +00:00
kern_thr.c Document a large number of currently undocumented sysctls. While here 2011-12-13 00:38:50 +00:00
kern_thread.c Consistently use process spin lock for protection of the 2011-11-18 09:12:26 +00:00
kern_time.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_timeout.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
kern_umtx.c Add umtx_copyin_timeout() and move parameter checks here. 2011-12-03 12:30:58 +00:00
kern_uuid.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
kern_xxx.c
ksched.c Use p4prio_to_tsprio to calculate TS priority instead of using 2011-06-07 02:50:14 +00:00
link_elf_obj.c Remove malloc(9) return value checks when M_WAITOK is used. 2011-04-16 16:20:51 +00:00
link_elf.c Even if the loaded module has no symbols, we still need to notify 2011-06-16 17:41:21 +00:00
linker_if.m
Make.tags.inc Update tags build script 2011-07-10 00:53:04 +00:00
Makefile
makesyscalls.sh - Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate() 2011-11-21 01:26:10 +00:00
md4c.c
md5c.c
p1003_1b.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
posix4_mib.c Define two new sysctl node flags: CTLFLAG_CAPRD and CTLFLAG_CAPRW, which 2011-07-17 23:05:24 +00:00
sched_4bsd.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
sched_ule.c - Currently, sched_balance_pair() may cause a CPU to send an IPI_PREEMPT to 2011-10-06 11:48:13 +00:00
serdev_if.m
stack_protector.c
subr_acl_nfs4.c Remove assertion against empty NFSv4 ACLs. An empty ACL is not exactly 2011-10-05 17:29:49 +00:00
subr_acl_posix1e.c
subr_autoconf.c
subr_blist.c - Fix typos s/(more|less) then|\1 than/ 2011-12-03 15:41:37 +00:00
subr_bufring.c
subr_bus.c It doesn't make much sense to check whether child is NULL after already 2011-12-02 22:03:27 +00:00
subr_clock.c
subr_devstat.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
subr_disk.c
subr_eventhandler.c
subr_fattime.c
subr_firmware.c Do not increment the parent firmware's reference count when any other 2011-11-19 00:20:28 +00:00
subr_hash.c
subr_hints.c
subr_kdb.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
subr_kobj.c As it turns out, r186347 actually is insufficient to avoid the use of the 2011-11-15 20:11:03 +00:00
subr_lock.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
subr_log.c
subr_mbpool.c
subr_mchain.c Add unicode support to msdosfs and smbfs; original pathes from imura, 2011-11-18 03:05:20 +00:00
subr_module.c
subr_msgbuf.c Fix a bug introduced in revision 222537. 2011-05-31 22:39:32 +00:00
subr_param.c
subr_pcpu.c Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. 2011-11-07 06:44:47 +00:00
subr_power.c
subr_prf.c Fix double vision syndrome (read: double output) when in the 2011-10-16 14:16:46 +00:00
subr_prof.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
subr_rman.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
subr_rtc.c Core structure and functions to support a feed-forward clock within the kernel. 2011-11-19 14:10:16 +00:00
subr_sbuf.c r222015 introduced a new assertion that the size of a fixed-length sbuf 2011-08-19 08:29:10 +00:00
subr_scanf.c
subr_sglist.c
subr_sleepqueue.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
subr_smp.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
subr_stack.c Constify stack argument for functions that don't modify it. 2011-11-16 19:06:55 +00:00
subr_syscall.c Revert rev. 226893: subr_syscall.c is being included from C files and 2011-10-30 02:19:39 +00:00
subr_taskqueue.c Ensure that ta_pending doesn't overflow u_short by capping its value at USHRT_MAX. 2011-09-15 08:42:06 +00:00
subr_trap.c Assert that exiting process does not return to usermode. 2011-10-03 16:58:58 +00:00
subr_turnstile.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
subr_uio.c Constify args to copyiniov and copyinuio. 2011-11-14 07:12:10 +00:00
subr_unit.c
subr_witness.c panic: add a switch and infrastructure for stopping other CPUs in SMP case 2011-12-11 21:02:01 +00:00
sys_capability.c Revisit the capability failure trace points. The initial implementation 2011-10-18 07:28:58 +00:00
sys_generic.c To limit amount of the kernel memory allocated, and to optimize the 2011-11-13 10:28:01 +00:00
sys_pipe.c Fix select/poll/kqueue for write on reverse direction before first write. 2011-12-14 22:26:39 +00:00
sys_procdesc.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
sys_process.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
sys_socket.c Add the fo_chown and fo_chmod methods to struct fileops and use them 2011-08-16 20:07:47 +00:00
syscalls.c - Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate() 2011-11-21 01:26:10 +00:00
syscalls.master - Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate() 2011-11-21 01:26:10 +00:00
systrace_args.c - Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate() 2011-11-21 01:26:10 +00:00
sysv_ipc.c
sysv_msg.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
sysv_sem.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
sysv_shm.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
tty_compat.c
tty_info.c
tty_inq.c Fix whitespace inconsistencies in the TTY layer and its drivers owned by me. 2011-06-26 18:26:20 +00:00
tty_outq.c Fix whitespace inconsistencies in the TTY layer and its drivers owned by me. 2011-06-26 18:26:20 +00:00
tty_pts.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
tty_tty.c
tty_ttydisc.c Fix whitespace inconsistencies in the TTY layer and its drivers owned by me. 2011-06-26 18:26:20 +00:00
tty.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
uipc_accf.c
uipc_cow.c
uipc_debug.c
uipc_domain.c
uipc_mbuf2.c
uipc_mbuf.c
uipc_mqueue.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
uipc_sem.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
uipc_shm.c Add a helper API to allow in-kernel code to map portions of shared memory 2011-12-14 22:22:19 +00:00
uipc_sockbuf.c Document a large number of currently undocumented sysctls. While here 2011-12-13 00:38:50 +00:00
uipc_socket.c Remove a few bits of FreeBSD 2.x compatibility code. 2011-11-14 18:21:27 +00:00
uipc_syscalls.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
uipc_usrreq.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
vfs_acl.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
vfs_aio.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
vfs_bio.c Rename vm_page_set_valid() to vm_page_set_valid_range(). 2011-11-30 17:39:00 +00:00
vfs_cache.c put sys/systm.h at its proper place or add it if missing 2011-12-12 10:05:13 +00:00
vfs_cluster.c
vfs_default.c Existing VOP_VPTOCNP() interface has a fatal flow that is critical for 2011-11-19 07:50:49 +00:00
vfs_export.c
vfs_extattr.c In order to maximize the re-usability of kernel code in user space this 2011-09-16 13:58:51 +00:00
vfs_hash.c
vfs_init.c Modify vfs_register() to use a hash calculation 2011-09-13 21:01:26 +00:00
vfs_lookup.c Revisit the capability failure trace points. The initial implementation 2011-10-18 07:28:58 +00:00
vfs_mount.c Introduce the option VFS_ALLOW_NONMPSAFE and turn it on by default on 2011-11-08 10:18:07 +00:00
vfs_mountroot.c Don't terminate the interactive root mount prompt on mount failure. 2011-10-23 20:03:33 +00:00
vfs_subr.c Add the posix_fadvise(2) system call. It is somewhat similar to 2011-11-04 04:02:50 +00:00
vfs_syscalls.c Document a large number of currently undocumented sysctls. While here 2011-12-13 00:38:50 +00:00
vfs_vnops.c Add the posix_fadvise(2) system call. It is somewhat similar to 2011-11-04 04:02:50 +00:00
vnode_if.src Add the posix_fadvise(2) system call. It is somewhat similar to 2011-11-04 04:02:50 +00:00