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newlib-cygwin/winsup/cygwin
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Takashi Yano b160b690b6 Cygwin: console: Fix a race issue between close() and open(). 
The open() call for console sometimes fails if the console owner
process is closing the console by close() at the same time. This
is due to mismatch state of con.owner variable and attaching state
to the console. With this patch, checking con.owner and attaching
to con.owner sequence in open(), and resetting con.owner and freeing
console sequence in close() are guarded by output_mutex to avoid
such a race issue.
Addresses: https://cygwin.com/pipermail/cygwin/2024-March/255575.html

Fixes: 3721a756b0 ("Cygwin: console: Make the console accessible from other terminals.")
Reported-by: Kate Deplaix <kit-ty-kate@outlook.com>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
 		2024-03-04 11:58:09 +09:00
..
DevDocs Cygwin: testsuite: Add x86_64 code to "dynamically load cygwin" test 2022-08-29 17:53:48 +01:00
fhandler Cygwin: console: Fix a race issue between close() and open(). 2024-03-04 11:58:09 +09:00
include Cygwin: timespec_get: implement C11 function 2024-02-16 20:44:31 +01:00
lib Cygwin: drop __stdcall usage 2022-08-04 20:54:09 +02:00
libc Cygwin: strptime: fix am/pm handling 2024-02-21 19:54:20 +01:00
linux-locale-helpers Cygwin: replace all `fgrep' with `grep -F' 2024-01-18 10:53:25 +01:00
local_includes Cygwin: cygheap: compute bucket instead of looping over it 2024-03-01 22:35:22 +01:00
math Cygwin: fix return value of ilogbl(NaN) 2023-04-18 13:43:06 +02:00
mm Cygwin: cygheap: compute bucket instead of looping over it 2024-03-01 22:35:22 +01:00
regex Cygwin: regex: fix faulty check for valid range expression 2023-03-20 12:58:03 +01:00
release Cygwin: console: Fix a race issue between close() and open(). 2024-03-04 11:58:09 +09:00
scripts Cygwin: globals: make __progname an alias of program_invocation_short_name 2024-01-31 20:11:58 +01:00
sec Cygwin: get_posix_access: do not merge permissions for just created files 2023-07-21 21:57:44 +02:00
tzcode winsup: delete old _LIBC logic 2021-11-10 20:16:15 -05:00
x86_64 Cygwin: x86_64: import swab.S from NetBSD 2022-12-20 10:19:23 +01:00
Makefile.am Cygwin: Add /dev/disk/by-id symlinks 2023-11-05 17:01:43 +01:00
advapi32.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
aio.cc Cygwin: fix build failure due to redefinition of __restrict in sys/cdefs.h 2023-08-07 16:04:32 +02:00
assert.cc
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autoload.cc Cygwin: console: Fix a problem that minor ID is incorrect in ConEmu. 2024-02-13 23:27:44 +09:00
automode.c
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binmode.c
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clock.cc Cygwin: drop wincap::has_precise_system_time 2022-12-04 14:01:41 +01:00
config.h.in
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create_posix_thread.cc Cygwin: add memory_layout.h 2022-10-28 16:26:53 +02:00
crt0.c Cygwin: drop 32 bit considerations in crt0 code 2022-05-16 18:17:06 +02:00
ctype.cc Cygwin: fully support KOI8-T codeset 2023-02-25 16:12:51 +01:00
cxx.cc
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cygthread.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
cygtls.cc Cygwin: tls_pathbuf: Use Windows heap 2022-08-23 12:09:44 +02:00
cygwait.cc
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cygwin.din Cygwin: timespec_get: implement C11 function 2024-02-16 20:44:31 +01:00
cygwin.ldif
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cygwin.sc.in Cygwin: drop objcopy .gnu_debuglink juggle 2022-10-28 16:26:53 +02:00
cygxdr.cc
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dcrt0.cc Cygwin: globals: make __progname an alias of program_invocation_short_name 2024-01-31 20:11:58 +01:00
debug.cc Cygwin: debugging: convert muto to SRWLOCK 2022-08-22 14:38:49 +02:00
devices.cc Cygwin: console: Fix a bug that 64th console cannot be handled. 2024-02-16 04:06:01 +09:00
devices.in Cygwin: console: Fix a bug that 64th console cannot be handled. 2024-02-16 04:06:01 +09:00
dir.cc sys/stat.h: drop __INSIDE_CYGWIN__ guards 2024-01-31 20:11:58 +01:00
dlfcn.cc Cygwin: remove miscellaneous 32-bit code 2022-05-29 17:54:32 -04:00
dll_init.cc Cygwin: redefine how to recognize forkee state 2024-01-29 13:33:05 +01:00
dtable.cc Cygwin: Add /dev/disk/by-id symlinks 2023-11-05 17:01:43 +01:00
environ.cc Cygwin: reorder list of CYGWIN env var options alphabetically again 2024-02-03 19:54:50 +01:00
errno.cc Cygwin: set ENOSHARE and ECASECLASH _sys_errlist[] entries to empty 2024-02-28 09:59:07 +01:00
exceptions.cc Cygwin: Add a timeout to ensure we don't wait forever for dumper 2024-01-25 14:32:00 +00:00
exec.cc Cygwin: rename __cygwin_environ and drop env redirection via cur_environ() 2022-07-28 22:00:40 +02:00
external.cc Cygwin: CW_CMDLINE_ALLOC: fix a pontentially undefined return value 2024-02-01 13:34:52 +01:00
fcntl.cc Cygwin: simplify some function names 2022-05-29 17:45:52 -04:00
fenv.c
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flock.cc Cygwin: flock: drop checking for artificial console handles 2022-12-04 14:01:41 +01:00
fork.cc Cygwin: redefine how to recognize forkee state 2024-01-29 13:33:05 +01:00
forkable.cc Cygwin: unlink_nt: declare in winsup.h 2023-09-08 22:34:52 +02:00
gcrt0.c Revert "sys/types.h: Don't include sys/_stdint.h" 2022-05-04 15:08:44 +02:00
glob.cc Cygwin: glob: fix conversion from UTF-32 to multibyte 2023-03-03 18:19:17 +01:00
glob_pattern_p.cc
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globals.cc Cygwin: Do not show Error dialogs by default 2024-02-03 19:54:50 +01:00
gmon.c
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grp.cc Cygwin: getgrent: fix local SAM enumeration on domain member machines 2024-02-20 23:51:33 +01:00
hookapi.cc Cygwin: Fix previous attempt to drop i386 targets from hookapi 2022-07-28 16:38:01 +02:00
init.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
ioctl.cc
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ipc.cc Cygwin: simplify some function names 2022-05-29 17:45:52 -04:00
kernel32.cc Cygwin: cygwin_GetCommandLineW/A: don't rely on __argv[0] content 2024-01-31 20:11:58 +01:00
ldap.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
libstdcxx_wrapper.cc Cygwin: remove miscellaneous 32-bit code 2022-05-29 17:54:32 -04:00
loadavg.cc
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lsearch.cc
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mcount.c
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miscfuncs.cc Cygwin: rename CygwinCreateThread to create_posix_thread 2022-08-10 18:06:28 +02:00
mktemp.cc Cygwin: simplify some function names 2022-05-29 17:45:52 -04:00
mount.cc Cygwin: check remote drives for being SSDs as well 2024-01-08 11:45:13 +01:00
msg.cc
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net.cc Cygwin: net: Make if_nametoindex, etc. consistent with if_nameindex. 2024-02-03 23:47:44 +09:00
netdb.cc
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nfs.cc
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nlsfuncs.cc Cygwin: locales: drop unused has_modifier macro 2023-04-24 22:41:41 +02:00
ntea.cc Cygwin: use new XATTR_{NAME,SIZE}_MAX instead of MAX_EA_{NAME,VALUE}_LEN 2023-06-16 21:44:41 +02:00
passwd.cc Cygwin: getgrent/getpwent: avoid local enumeration on DCs 2024-02-20 23:55:51 +01:00
path.cc Cygwin: find_fast_cwd: don't run assembler checking code on ARM64 2024-02-13 16:48:15 +01:00
pinfo.cc Cygwin: implement setproctitle 2024-01-31 20:11:58 +01:00
poll.cc Cygwin: poll: Fix a bug on inquiring same fd with different events. 2022-06-27 10:54:24 +09:00
posix_ipc.cc Cygwin: move POSIX semaphore API functions to posix_ipc.cc 2022-08-10 18:11:57 +02:00
posix_timer.cc Cygwin: posix_timer: fix formatting 2022-08-22 14:53:30 +02:00
profil.c Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
pseudo-reloc.cc Cygwin: drop macro and code for CYGWIN_VERSION_USE_PSEUDO_RELOC_IN_DLL 2022-08-03 16:01:29 +02:00
quotactl.cc
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random.cc Cygwin: rand(3): implement in terms of random(3) 2023-11-14 17:52:48 +01:00
registry.cc
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resource.cc Cygwin: fix a few comments mentioning Windows 7 or 8 2022-12-04 14:01:41 +01:00
scandir.cc
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sched.cc Cygwin: sys/cpuset.h: add cpuset-specific external functions 2023-09-01 12:38:52 +02:00
select.cc Cygwin: dsp: Improve response time of select()/poll(). 2023-09-07 17:36:04 +09:00
sem.cc
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setlsapwd.cc
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shm.cc Cygwin: shm: Convert muto into SRWLOCK and avoid overlocking 2022-08-22 14:28:11 +02:00
signal.cc Cygwin: remove regparm.h 2022-05-29 17:45:52 -04:00
sigproc.cc Cygwin: /proc/<PID>/status: avoid crash computing signal info 2023-01-10 11:48:02 +01:00
smallprint.cc Cygwin: smallprint.cc: Drop HEAP_ZERO_MEMORY 2022-08-22 17:58:53 +02:00
spawn.cc Cygwin: Do not show Error dialogs by default 2024-02-03 19:54:50 +01:00
strace.cc Cygwin: globals: make __progname an alias of program_invocation_short_name 2024-01-31 20:11:58 +01:00
strfuncs.cc Cygwin: cXXrtomb, mbrtcXX: use function-specific internal state 2023-08-15 22:34:29 +02:00
strsep.cc
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strsig.cc Cygwin: signals: drop accidental spaces from real-time signal names 2023-03-15 21:44:52 +01:00
sync.cc
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syscalls.cc Cygwin: lseek: improve seeking posix_getdents descriptors 2024-03-01 15:32:39 +01:00
sysconf.cc Cygwin: execve: drop argument size limit 2023-08-29 14:17:04 +02:00
syslog.cc
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termios.cc Cygwin: drop macro and code for CYGWIN_VERSION_DLL_IS_OLD_TERMIOS 2022-08-03 15:35:29 +02:00
textmode.c
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textreadmode.c
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thread.cc Cygwin: pthread: Fix handle leak in pthread_once. 2024-01-24 22:42:49 +09:00
timerfd.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
times.cc Cygwin: gettimeofday: allow tv NULL pointer 2024-02-20 12:30:34 +01:00
tls_pbuf.cc Cygwin: tls_pathbuf: Use Windows heap 2022-08-23 12:09:44 +02:00
tty.cc Cygwin: accommodate gcc -Og option 2024-02-14 14:00:34 +01:00
uinfo.cc Cygwin: passwd/group: drop Capability SIDs 2024-02-20 17:25:23 +01:00
uname.cc Cygwin: uname: fix building in non-git source dir 2022-12-07 22:22:38 +01:00
wait.cc
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wincap.cc wincap.cc: set wincap member has_user_shstk true for 2004+ 2023-06-20 10:06:56 +02:00
window.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
winf.cc
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winver.rc
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