git/compat
Jeff Hostetler 6504cfd392 fsm-health-win32: force shutdown daemon if worktree root moves
Force shutdown fsmonitor daemon if the worktree root directory
is moved, renamed, or deleted.

Use Windows low-level GetFileInformationByHandle() to get and
compare the Windows system unique ID for the directory with a
cached version when we started up.  This lets us detect the
case where someone renames the directory that we are watching
and then creates a new directory with the original pathname.

This is important because we are listening to a named pipe for
requests and they are stored in the Named Pipe File System (NPFS)
which a kernel-resident pseudo filesystem not associated with
the actual NTFS directory.

For example, if the daemon was watching "~/foo/", it would have
a directory-watch handle on that directory and a named-pipe
handle for "//./pipe/...foo".  Moving the directory to "~/bar/"
does not invalidate the directory handle.  (So the daemon would
actually be watching "~/bar" but listening on "//./pipe/...foo".
If the user then does "git init ~/foo" and causes another daemon
to start, the first daemon will still have ownership of the pipe
and the second daemon instance will fail to start.  "git status"
clients in "~/foo" will ask "//./pipe/...foo" about changes and
the first daemon instance will tell them about "~/bar".

This commit causes the first daemon to shutdown if the system unique
ID for "~/foo" changes (changes from what it was when the daemon
started).  Shutdown occurs after a periodic poll.  After the
first daemon exits and releases the lock on the named pipe,
subsequent Git commands may cause another daemon to be started
on "~/foo".  Similarly, a subsequent Git command may cause another
daemon to be started on "~/bar".

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-05-26 15:59:27 -07:00
..
fsmonitor fsm-health-win32: force shutdown daemon if worktree root moves 2022-05-26 15:59:27 -07:00
linux tr2: log N parent process names on Linux 2021-09-07 11:08:00 -07:00
nedmalloc win32: allow building with pedantic mode enabled 2021-09-03 11:40:30 -07:00
poll mingw: workaround for hangs when sending STDIN 2020-02-27 14:23:29 -08:00
regex compat/regex: move stdlib.h up in inclusion chain 2020-04-27 11:21:16 -07:00
simple-ipc simple-ipc: work around issues with Cygwin's Unix socket emulation 2021-11-10 09:12:19 -08:00
stub tr2: make process info collection platform-generic 2021-07-22 13:35:20 -07:00
vcbuild Makefile: stop hardcoding {command,config}-list.h 2021-09-23 15:06:47 -07:00
win32 lazyload: use correct calling conventions 2022-01-09 10:34:53 -08:00
.gitattributes Provide zlib's uncompress2 from compat/zlib-compat.c 2021-10-08 10:45:48 -07:00
access.c git-compat-util: work around for access(X_OK) under root 2019-04-25 17:49:44 +09:00
apple-common-crypto.h imap-send: use HMAC() function provided by OpenSSL 2016-04-08 11:45:47 -07:00
basename.c compat/basename.c: provide a dirname() compatibility function 2016-01-12 10:40:54 -08:00
bswap.h compat/bswap.h: don't assume MSVC is little-endian 2020-11-11 11:24:47 -08:00
compiler.h bugreport: add compiler info 2020-04-16 15:23:42 -07:00
fileno.c git-compat-util: work around for access(X_OK) under root 2019-04-25 17:49:44 +09:00
fopen.c git_fopen: fix a sparse 'not declared' warning 2017-05-26 12:33:55 +09:00
hstrerror.c compat/hstrerror: convert sprintf to snprintf 2015-09-25 10:18:18 -07:00
inet_ntop.c compat/inet_ntop: fix off-by-one in inet_ntop4 2015-09-25 10:18:18 -07:00
inet_pton.c
memmem.c
mingw.c getcwd(mingw): handle the case when there is no cwd 2022-01-19 11:27:31 -08:00
mingw.h Makefile: add OPEN_RETURNS_EINTR knob 2021-02-26 14:15:51 -08:00
mkdir.c
mkdtemp.c
mmap.c compat: let git_mmap use malloc(3) directly 2021-08-24 14:43:45 -07:00
msvc.c
msvc.h msvc: add pragmas for common warnings 2019-06-25 10:46:57 -07:00
obstack.c compat/obstack: fix -Wcast-function-type warnings 2019-01-17 11:13:38 -08:00
obstack.h obstack: avoid computing offsets from NULL pointer 2020-01-28 23:13:25 -08:00
open.c Makefile: add OPEN_RETURNS_EINTR knob 2021-02-26 14:15:51 -08:00
pread.c
precompose_utf8.c precompose_utf8: make precompose_string_if_needed() public 2021-04-05 17:30:04 -07:00
precompose_utf8.h precompose_utf8: make precompose_string_if_needed() public 2021-04-05 17:30:04 -07:00
qsort_s.c compat/qsort_s.c: avoid using potentially unaligned access 2022-01-07 14:20:58 -08:00
setenv.c use st_add and st_mult for allocation size computation 2016-02-22 14:51:09 -08:00
sha1-chunked.c sha1: allow limiting the size of the data passed to SHA1_Update() 2015-11-05 10:35:11 -08:00
sha1-chunked.h sha1: allow limiting the size of the data passed to SHA1_Update() 2015-11-05 10:35:11 -08:00
snprintf.c MSVC: vsnprintf in Visual Studio 2015 doesn't need SNPRINTF_SIZE_CORR any more 2016-03-30 11:13:01 -07:00
stat.c compat: convert modes to use portable file type values 2014-12-04 11:58:36 -08:00
strcasestr.c
strdup.c compat: move strdup(3) replacement to its own file 2016-09-07 10:41:45 -07:00
strlcpy.c
strtoimax.c
strtoumax.c
terminal.c terminal: teach git how to save/restore its terminal settings 2021-10-06 08:53:00 -07:00
terminal.h terminal: teach git how to save/restore its terminal settings 2021-10-06 08:53:00 -07:00
unsetenv.c unsetenv(3) returns int, not void 2021-10-29 15:00:58 -07:00
win32.h mingw: rename WIN32 cpp macro to GIT_WINDOWS_NATIVE 2013-05-08 12:14:35 -07:00
win32mmap.c mmap(win32): avoid expensive fstat() call 2016-04-22 15:01:16 -07:00
winansi.c Merge branch 'bc/csprng-mktemps' 2022-02-11 16:55:57 -08:00
zlib-uncompress2.c compat: auto-detect if zlib has uncompress2() 2022-01-26 09:05:55 -08:00