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glibc/hurd
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Sergey Bugaev 543f0cfc9a hurd: Disable O_TRUNC and FS_RETRY_MAGICAL in rtld 
hurd/lookup-retry.c is compiled into rtld, the dynamic linker/loader. To
avoid pulling in file_set_size, file_utimens, tty/ctty stuff, more
string/memory code (memmove, strncpy, strcpy), and more strtoul/itoa
code, compile out support for O_TRUNC and FS_RETRY_MAGICAL when building
hurd/lookup-retry.c for rtld. None of that functionality is useful to
rtld during startup anyway. Keep support for FS_RETRY_MAGICAL("/"),
since that does not pull in much, and is required for following absolute
symlinks.

The large number of extra code being pulled into rtld was noticed by
reviewing librtld.map & elf/librtld.os.map in the build tree.

It is worth noting that once libc.so is loaded, the real __open, __stat,
etc. replace the minimal versions used initially by rtld -- this is
especially important in the Hurd port, where the minimal rtld versions
do not use the dtable and just pass real Mach port names as fds. Thus,
once libc.so is loaded, rtld will gain access to the full
__hurd_file_name_lookup_retry () version, complete with FS_RETRY_MAGICAL
support, which is important in case the program decides to
dlopen ("/proc/self/fd/...") or some such.

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-Id: <20230319151017.531737-9-bugaevc@gmail.com>
2023-04-03 00:56:34 +02:00
..
hurd hurd: Remove __hurd_threadvar_stack_{offset,mask} 2023-04-03 00:53:25 +02:00
alloc-fd.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
catch-exc.c hurd: Make exception subcode a long 2023-04-03 00:51:42 +02:00
catch-signal.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
compat-20.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
ctty-input.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
ctty-output.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
Depend * Makefile (subdir-target-args): New variable. 2006-02-28 07:11:04 +00:00
dtable.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
exc2signal.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
faultexc.defs Sun May 12 11:16:58 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> 1996-05-12 16:38:08 +00:00
fchroot.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
fcntl-internal.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
fd-cleanup.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
fd-close.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
fd-read.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
fd-write.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
fopenport.c mach, hurd: Cast through uintptr_t 2023-02-12 15:55:04 +01:00
get-host.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
getdport.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
geteuids.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
getumask.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurd-raise.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurd.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdauth.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdchdir.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdexec.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdfault.c hurd: Swap around two function calls 2023-04-03 00:54:35 +02:00
hurdfault.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdfchdir.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdhost.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdid.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdinit.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdioctl.c hurd: Use mach_msg_type_number_t where appropriate 2023-02-12 15:52:07 +01:00
hurdkill.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdlock.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdlock.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdlookup.c hurd: Consolidate file_name_lookup implementation 2023-02-01 20:05:20 +01:00
hurdmalloc.c hurd: Fix static-PIE startup 2021-12-28 10:28:22 +01:00
hurdmalloc.h hurdmalloc: Run fork handler as late as possible [BZ #19431] 2016-09-22 01:45:48 +02:00
hurdmsg.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdpid.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdports.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdprio.c hurd: Use mach_msg_type_number_t where appropriate 2023-02-12 15:52:07 +01:00
hurdrlimit.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdselect.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdsig.c hurd: Fix some broken indentation 2023-03-02 00:32:55 +01:00
hurdsock.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdsocket.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdstartup.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
hurdstartup.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
intern-fd.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
intr-msg.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
intr-rpc.defs Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
intr-rpc.h Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
longjmp-ts.c hurd: Fix file name in #error 2023-04-03 00:55:12 +02:00
lookup-at.c hurd: Implement O_TMPFILE 2023-02-01 23:32:21 +01:00
lookup-retry.c hurd: Disable O_TRUNC and FS_RETRY_MAGICAL in rtld 2023-04-03 00:56:34 +02:00
Makefile hurd: Fix unwinding over INTR_MSG_TRAP in shared too 2023-02-14 19:32:15 +00:00
msgportdemux.c Remove support setting custom demuxers during signal handling. 2023-02-01 23:37:40 +01:00
new-fd.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
Notes initial import 1995-02-18 01:27:10 +00:00
openport.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
path-lookup.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
pid2task.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
port-cleanup.c mach, hurd: Cast through uintptr_t 2023-02-12 15:55:04 +01:00
port2fd.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
ports-get.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
ports-set.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
preempt-sig.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
privports.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
report-wait.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
RPC_gsync_wait_intr.c hurd: Add __lll_abstimed_wait_intr 2020-12-16 01:58:33 +01:00
set-hooks.h Remove set-hooks.h from generic includes 2023-03-27 13:57:55 -03:00
set-host.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
setauth.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
seteuids.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
siginfo.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
sigunwind.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
stack_chk_fail_local.c hurd: fix build with -fstack-protector-strong 2017-08-27 22:10:17 +02:00
task2pid.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
thread-cancel.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
thread-self.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
trampoline.c Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
Versions hurd: Remove __hurd_threadvar_stack_{offset,mask} 2023-04-03 00:53:25 +02:00
vpprintf.c mach, hurd: Cast through uintptr_t 2023-02-12 15:55:04 +01:00
xattr.c hurd: Fix xattr error value 2023-02-12 15:56:21 +01:00