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Johannes Schindelin e9dd5d8f25 uinfo: special-case IIS APPPOOL accounts 
The account under which Azure Web Apps run is an IIS APPOOL account that
is generated on the fly.

These are special because the virtual machines on which thes Apps run
are not domain-joined, yet the accounts are domain accounts.

To support the use case where such a Web App needs to call `ssh` (e.g.
to deploy from a Git repository that is accessible only via SSH), we do
need OpenSSH's `getpwuid (getuid ())` invocation to work.

But currently it does not. Concretely, `getuid ()` returns -1 for these
accounts, and OpenSSH fails to find the correct home directory
(_especially_ when that home directory was overridden via a `db_home:
env` line in `/etc/nsswitch.conf`).

This can be verified e.g. in a Kudu console (for details about Kudu
consoles, see https://github.com/projectkudu/kudu/wiki/Kudu-console):
the domain is `IIS APPPOOL`, the account name is the name of the Azure
Web App, the SID starts with 'S-1-5-82-`, and
`pwdgrp::fetch_account_from_windows()` runs into the code path where
"[...] the domain returned by LookupAccountSid is not our machine name,
and if our machine is no domain member, we lose.  We have nobody to ask
for the POSIX offset."

Since these IIS APPPOOL accounts are relatively similar to AzureAD
accounts in this scenario, let's imitate the latter to support also the
former.

Reported-by: David Ebbo <david.ebbo@gmail.com>
Helped-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
 		2023-06-06 15:18:53 +02:00
..
DevDocs Cygwin: testsuite: Add x86_64 code to "dynamically load cygwin" test 2022-08-29 17:53:48 +01:00
fhandler Cygwin: pty: Additional fix for transferring input at exit. 2023-06-02 10:19:18 +09:00
include Cygwin: replace regex with latest verbatim FreeBSD version 2023-03-16 11:12:08 +01:00
lib Cygwin: drop __stdcall usage 2022-08-04 20:54:09 +02:00
libc Cygwin: fnmatch: support collating symbols in [. .] brackets 2023-03-01 10:54:52 +01:00
linux-locale-helpers Cygwin: fetch-lc-def-codesets-from-linux: fix locale name handling 2023-02-26 20:14:54 +01:00
local_includes Cygwin: Fix compiling with w32api-headers v11.0.0 2023-05-01 11:40:52 +01:00
math Cygwin: fix return value of ilogbl(NaN) 2023-04-18 13:43:06 +02:00
mm Cygwin: cygheap: fix fork error after heap has grown 2023-04-18 10:06:53 +02:00
regex Cygwin: regex: fix faulty check for valid range expression 2023-03-20 12:58:03 +01:00
release Cygwin: posix_spawnp: don't fallback to sh 2023-04-19 21:08:48 +02:00
scripts Cygwin: Run testsuite against the just-built DLL 2023-01-10 10:27:13 +00:00
sec Cygwin: get_posix_access: Make mode_t parameter mandatory 2023-02-09 21:58:44 +01:00
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: Makefile.am: fix rule to create version from git describe 2023-02-15 15:04:16 +01:00
advapi32.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
aio.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
assert.cc
…
autoload.cc Cygwin: autoload: clean up arguments to LoadDllFunc* 2023-01-17 16:32:14 +01:00
automode.c
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binmode.c
…
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
…
cygwin.din Cygwin: Export posix_spawn_file_actions_add{f}chdir_np 2023-04-19 00:34:36 +02:00
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: cygheap: Initialize myself_pinfo before child_copy(). 2023-01-10 21:04:29 +09:00
debug.cc Cygwin: debugging: convert muto to SRWLOCK 2022-08-22 14:38:49 +02:00
devices.cc Cygwin: tape: tapes are character devices, not block devices 2023-01-21 18:25:56 +01:00
devices.in Cygwin: tape: tapes are character devices, not block devices 2023-01-21 18:25:56 +01:00
dir.cc change _COMPILING_NEWLIB to _LIBC 2021-11-15 19:32:23 -05:00
dlfcn.cc Cygwin: remove miscellaneous 32-bit code 2022-05-29 17:54:32 -04:00
dll_init.cc Cygwin: remove most occurrences of __stdcall and __cdecl 2022-06-06 12:00:45 -04:00
dtable.cc Cygwin: ctty: Remove old 'kludge' code. 2023-03-07 10:51:44 +09:00
environ.cc Cygwin: drop macro and code for CYGWIN_VERSION_DLL_MALLOC_ENV 2022-08-03 15:35:34 +02:00
errno.cc Cygwin: create sparse errmap array 2022-08-04 15:16:48 +02:00
exceptions.cc Cygwin: ctty: Replace ctty constant with more descriptive macros. 2023-03-07 10:51:29 +09:00
exec.cc Cygwin: rename __cygwin_environ and drop env redirection via cur_environ() 2022-07-28 22:00:40 +02:00
external.cc Cygwin: ctty: Replace ctty constant with more descriptive macros. 2023-03-07 10:51:29 +09:00
fcntl.cc Cygwin: simplify some function names 2022-05-29 17:45:52 -04:00
fenv.c
…
flock.cc Cygwin: flock: drop checking for artificial console handles 2022-12-04 14:01:41 +01:00
fork.cc Cygwin: fork: fix a potential hang in fork 2022-08-29 12:25:24 +02:00
forkable.cc Cygwin: unlink: drop unlink_nt/unlink_nt_shareable wrappers 2023-03-20 12:55:30 +01:00
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
…
globals.cc Cygwin: convert __collate_range_cmp to __wcollate_range_cmp 2023-02-19 14:40:29 +01:00
gmon.c
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grp.cc Cygwin: simplify some function names 2022-05-29 17:45:52 -04:00
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: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
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
…
lsearch.cc
…
mcount.c
…
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: fs_info::update: fix NTFS filesystem flags 2023-03-21 18:02:49 +01:00
msg.cc
…
net.cc Cygwin: net.cc: convert wsock_errmap into a simple array of error codes 2022-08-04 11:45:58 +02:00
netdb.cc
…
nfs.cc
…
nlsfuncs.cc Cygwin: locales: drop unused has_modifier macro 2023-04-24 22:41:41 +02:00
ntea.cc Cygwin: remove most occurrences of __stdcall and __cdecl 2022-06-06 12:00:45 -04:00
passwd.cc Cygwin: simplify some function names 2022-05-29 17:45:52 -04:00
path.cc Cygwin: Adjust CWD magic to accommodate for the latest Windows previews 2023-05-24 20:44:52 +01:00
pinfo.cc Cygwin: ctty: Replace ctty constant with more descriptive macros. 2023-03-07 10:51:29 +09:00
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
…
random.cc Cygwin: add missing pragma 2022-12-07 21:18:24 +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: drop support for systems not supporting processor groups 2021-10-29 18:19:45 +02:00
select.cc Cygwin: console: Make the console accessible from other terminals. 2022-12-22 21:05:31 +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: posix_spawnp: don't fallback to sh 2023-04-19 21:08:48 +02:00
strace.cc Cygwin: remove most occurrences of __stdcall and __cdecl 2022-06-06 12:00:45 -04:00
strfuncs.cc Cygwin: mbrtowi: fix segfault when pwi is NULL 2023-04-19 10:14:46 +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: align renameat2 to Linux behaviour 2023-04-18 18:18:27 +02:00
sysconf.cc Cygwin: remove miscellaneous 32-bit code 2022-05-29 17:54:32 -04:00
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
…
thread.cc Cygwin: move POSIX semaphore API functions to posix_ipc.cc 2022-08-10 18:11:57 +02:00
timerfd.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
times.cc Cygwin: drop wincap::has_precise_system_time 2022-12-04 14:01:41 +01:00
tls_pbuf.cc Cygwin: tls_pathbuf: Use Windows heap 2022-08-23 12:09:44 +02:00
tty.cc Cygwin: ctty: Replace ctty constant with more descriptive macros. 2023-03-07 10:51:29 +09:00
uinfo.cc uinfo: special-case IIS APPPOOL accounts 2023-06-06 15:18:53 +02:00
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 Cygwin: wincap: make capability flags readonly 2023-01-12 10:34:32 +01:00
window.cc Cygwin: drop all usages of WINAPI 2022-08-04 22:13:59 +02:00
winf.cc
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winver.rc
…