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* hurd: Fix ld.so nameSamuel Thibault2023-05-061-0/+1
| | | | This was set to ld-x86-64.so.1 in gcc.
* hurd: Add ioperm symbol on x86_64Samuel Thibault2023-05-062-0/+6
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* Update sysdeps/mach/hurd/ioctl.c to make it more portableFlavio Cruz2023-05-051-20/+27
| | | | | | | | | | | | | | | Summary of the changes: - Update msg_align to use ALIGN_UP like we have done in previous patches. Use it below whenever necessary to avoid repeating the same alignment logic. - Define BAD_TYPECHECK to make it easier to do type checking in a few places below. - Update io2mach_type to use designated initializers. - Make RetCodeType use mach_msg_type_t. mach_msg_type_t is 8 byte for x86_64, so this make it portable. - Also call msg_align for _IOT_COUNT2/_IOT_TYPE2 since it is more correct. Message-Id: <ZFMvVsuFKwIy2dUS@jupiter.tail36e24.ts.net>
* hurd 64bit: Make dev_t word typeSamuel Thibault2023-05-021-1/+1
| | | | | | | dev_t are 64bit on Linux ports, so better increase their size on 64bit Hurd. It happens that this helps with BZ 23084 there: st_dev has type fsid_t (quad) and is specified by POSIX to have type dev_t. Making dev_t 64bit makes these match.
* hurd 64bit: Fix struct msqid_ds and shmid_ds fieldsSamuel Thibault2023-05-012-0/+83
| | | | | | | | The standards want msg_lspid/msg_lrpid/shm_cpid/shm_lpid to be pid_t, see BZ 23083 and 23085. We can leave them __rpc_pid_t on i386 for ABI compatibility, but avoid hitting the issue on 64bit.
* hurd 64bit: Fix ipc_perm fields typesSamuel Thibault2023-05-011-0/+33
| | | | | | | | | | | The standards want uid/cuid to be uid_t, gid/cgid to be gid_t and mode to be mode_t, see BZ 23082. We can leave them short ints on i386 for ABI compatibility, but avoid hitting the issue on 64bit. bits/ipc.h ends up being exactly the same in sysdeps/gnu/ and sysdeps/unix/sysv/linux/, so remove the latter.
* hurd 64bit: Fix flock fields typesSamuel Thibault2023-05-014-27/+95
| | | | | | | The standards want l_type and l_whence to be short ints, see BZ 23081. We can leave them ints on i386 for ABI compatibility, but avoid hitting the issue on 64bit.
* hurd 64bit: Add data for check-c++-typesSamuel Thibault2023-05-011-0/+67
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* hurd 64bit: Fix pthread_t/thread_t type to longSamuel Thibault2023-05-012-0/+48
| | | | So that they can be trivially cast to pointer type, like with nptl.
* hurd 64bit: Add missing data file for check-localplt testSamuel Thibault2023-05-011-0/+44
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* hurd 64bit: Add missing libanlSamuel Thibault2023-05-011-0/+4
| | | | The move of libanl to libc was in glibc 2.34 for nptl only.
* hurd: Also XFAIL missing SA_NOCLDWAIT on 64bitSamuel Thibault2023-05-011-0/+5
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* hurd: Add expected abilist files for x86_64Sergey Bugaev2023-05-0112-0/+3687
| | | | | | | | | | These were created by creating stub files, running 'make update-abi', and reviewing the results. Also, set baseline ABI to GLIBC_2.38, the (upcoming) first glibc release to first have x86_64-gnu support. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Replace reply port with a dead name on failed interruptionSergey Bugaev2023-05-011-18/+7
| | | | | | | | | | | | | If we're trying to interrupt an interruptible RPC, but the server fails to respond to our __interrupt_operation () call, we instead destroy the reply port we were expecting the reply to the RPC on. Instead of deallocating the name completely, replace it with a dead name, so the name won't get reused for some other right, and deallocate it in _hurd_intr_rpc_mach_msg once we return from the signal handler. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230429201822.2605207-4-bugaevc@gmail.com>
* Define __mig_strlen to support dynamically sized strings in hurd RPCsFlavio Cruz2023-05-011-1/+2
| | | | | | | We make lib{mach,hurd}user.so only call __mig_strlen which can be relocated before libc.so is relocated, similar to what is done with __mig_memcpy. Message-Id: <ZE8DTRDpY2hpPZlJ@jupiter.tail36e24.ts.net>
* hurd: Make it possible to call memcpy very earlySergey Bugaev2023-05-011-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Normally, in static builds, the first code that runs is _start, in e.g. sysdeps/x86_64/start.S, which quickly calls __libc_start_main, passing it the argv etc. Among the first things __libc_start_main does is initializing the tunables (based on env), then CPU features, and then calls _dl_relocate_static_pie (). Specifically, this runs ifunc resolvers to pick, based on the CPU features discovered earlier, the most suitable implementation of "string" functions such as memcpy. Before that point, calling memcpy (or other ifunc-resolved functions) will not work. In the Hurd port, things are more complex. In order to get argv/env for our process, glibc normally needs to do an RPC to the exec server, unless our args/env are already located on the stack (which is what happens to bootstrap processes spawned by GNU Mach). Fetching our argv/env from the exec server has to be done before the call to __libc_start_main, since we need to know what our argv/env are to pass them to __libc_start_main. On the other hand, the implementation of the RPC (and other initial setup needed on the Hurd before __libc_start_main can be run) is not very trivial. In particular, it may (and on x86_64, will) use memcpy. But as described above, calling memcpy before __libc_start_main can not work, since the GOT entry for it is not yet initialized at that point. Work around this by pre-filling the GOT entry with the baseline version of memcpy, __memcpy_sse2_unaligned. This makes it possible for early calls to memcpy to just work. The initial value of the GOT entry is unused on x86_64, and changing it won't interfere with the relocation being performed later: once _dl_relocate_static_pie () is called, the baseline version will get replaced with the most suitable one, and that is what subsequent calls of memcpy are going to call. Checked on x86_64-gnu. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230429201822.2605207-6-bugaevc@gmail.com>
* hurd: Implement longjmp for x86_64Sergey Bugaev2023-05-012-0/+219
| | | | | | | | Checked on x86_64-gnu. [samuel.thibault@ens-lyon.org: Restored same comments as on i386] Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230429201822.2605207-3-bugaevc@gmail.com>
* hurd: Implement sigreturn for x86_64Sergey Bugaev2023-05-011-0/+162
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230429201822.2605207-2-bugaevc@gmail.com>
* hurd: Make _exit work during early boot-upSergey Bugaev2023-04-291-2/+3
| | | | | | | | | | | | | | | | | | If any of the early boot-up tasks calls exit () or returns from main (), terminate it properly instead of crashing on trying to dereference _hurd_ports and getting forcibly terminated by the kernel. We sadly cannot make the __USEPORT macro do the check for _hurd_ports being unset, because it evaluates to the value of the expression provided as the second argument, and that can be of any type; so there is no single suitable fallback value for the macro to evaluate to in case _hurd_ports is unset. Instead, each use site that wants to care for this case will have to do its own checking. Checked on x86_64-gnu. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230429131354.2507443-4-bugaevc@gmail.com>
* Fix Hurd getcwd build with GCC >= 13Joseph Myers2023-04-271-2/+3
| | | | | | | | | | | | | | | | | | | | | The build of glibc for i686-gnu has been failing for a while with GCC mainline / GCC 13: ../sysdeps/mach/hurd/getcwd.c: In function '__hurd_canonicalize_directory_name_internal': ../sysdeps/mach/hurd/getcwd.c:242:48: error: pointer 'file_name' may be used after 'realloc' [-Werror=use-after-free] 242 | file_namep = &buf[file_namep - file_name + size / 2]; | ~~~~~~~~~~~^~~~~~~~~~~ ../sysdeps/mach/hurd/getcwd.c:236:25: note: call to 'realloc' here 236 | buf = realloc (file_name, size); | ^~~~~~~~~~~~~~~~~~~~~~~~~ Fix by doing the subtraction before the reallocation. Tested with build-many-glibcs.py for i686-gnu. [samuel.thibault@ens-lyon.rg: Removed mention of this being a bug] Message-Id: <18587337-7815-4056-ebd0-724df262d591@codesourcery.com>
* Regenerate sysdeps/mach/hurd/bits/errno.hJoseph Myers2023-04-261-0/+19
| | | | | This file was out of date, as shown by build-many-glibcs.py runs resulting in a modified source directory.
* hurd: Do not take any flag from the CMSG_DATASamuel Thibault2023-04-251-1/+3
| | | | | | As fixed in 0822e3552a78 ("hurd: Don't pass FD_CLOEXEC in CMSG_DATA"), senders currently don't have any flag to pass. We shouldn't blindly take random flags that senders could be erroneously giving us.
* hurd: Implement MSG_CMSG_CLOEXECSergey Bugaev2023-04-242-2/+7
| | | | | | | | | | | | | | | This is a new flag that can be passed to recvmsg () to make it atomically set the CLOEXEC flag on all the file descriptors received using the SCM_RIGHTS mechanism. This is useful for all the same reasons that the other XXX_CLOEXEC flags are useful: namely, it provides atomicity with respect to another thread of the same process calling (fork and then) exec at the same time. This flag is already supported on Linux and FreeBSD. The flag's value, 0x40000, is choosen to match FreeBSD's. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230423160548.126576-2-bugaevc@gmail.com>
* hurd: Don't pass FD_CLOEXEC in CMSG_DATASamuel Thibault2023-04-241-2/+2
| | | | | | | | | | | | | | | | | | | The flags are used by _hurd_intern_fd, which takes O_* flags, not FD_*. Also, it is of no concern to the receiving process whether or not the sender process wants to close its copy of sent file descriptor upon exec, and it should not influence whether or not the received file descriptor gets the FD_CLOEXEC flag set in the receiving process. The latter should in fact be dependent on the MSG_CMSG_CLOEXEC flag being passed to the recvmsg () call, which is going to be implemented in the following commit. Fixes 344e755248ce02c0f8d095d11cc49e340703d926 "hurd: Support sending file descriptors over Unix sockets" Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Implement prefer_map_32bit_exec tunableSergey Bugaev2023-04-242-0/+11
| | | | | | | This makes the prefer_map_32bit_exec tunable no longer Linux-specific. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230423215526.346009-4-bugaevc@gmail.com>
* hurd: Don't attempt to deallocate MACH_PORT_DEADSergey Bugaev2023-04-242-4/+4
| | | | | | | ...in some more places. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230423215526.346009-2-bugaevc@gmail.com>
* hurd: Only deallocate addrport when it's validSergey Bugaev2023-04-245-6/+10
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230423160548.126576-3-bugaevc@gmail.com>
* hurd: Implement MAP_32BITSergey Bugaev2023-04-243-7/+12
| | | | | | | | | | | | | | | | | | | | This is a flag that can be passed to mmap () to request that the mapping being established should be located in the lower 2 GB area of the address space, so only the lower 31 (not 32) bits can be set in its address, and the address can be represented as a 32-bit integer without truncating it. This flag is intended to be compatible with Linux, FreeBSD, and Darwin flags of the same name. Out of those systems, it appears Linux and FreeBSD take MAP_32BIT to mean "map 31 bit", whereas Darwin allows the 32nd bit to be set in the address as well. The Hurd follows Linux and FreeBSD behavior. Unlike on those systems, on the Hurd MAP_32BIT is defined on all supported architectures (which currently are only i386 and x86_64). Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230423215526.346009-1-bugaevc@gmail.com>
* hurd: Don't migrate reply port into __init1_tcbheadSergey Bugaev2023-04-213-17/+19
| | | | | | | | | | | | | | | Properly differentiate between setting up the real TLS with TLS_INIT_TP, and setting up the early TLS (__init1_tcbhead) in static builds. In the latter case, don't yet migrate the reply port into the TCB, and don't yet set __libc_tls_initialized to 1. This also lets us move the __init1_desc assignment inside _hurd_tls_init (). Fixes cd019ddd892e182277fadd6aedccc57fa3923c8d "hurd: Don't leak __hurd_reply_port0" Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Make dl-sysdep's open () cope with O_IGNORE_CTTYSergey Bugaev2023-04-201-2/+2
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230419160207.65988-6-bugaevc@gmail.com>
* hurd: Microoptimize sigreturnSergey Bugaev2023-04-181-3/+9
| | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Fix restoring reply port in sigreturnSergey Bugaev2023-04-171-12/+23
| | | | | | | | | We must not use the user's reply port (scp->sc_reply_port) for any of our own RPCs, otherwise various things break. So, use MACH_PORT_DEAD as a reply port when destroying our reply port, and make sure to do this after _hurd_sigstate_unlock (), which may do a gsync_wake () RPC. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Only check for TLS initialization inside rtld or in static buildsSergey Bugaev2023-04-146-33/+83
| | | | | | | | | | | | | | | | | | | | | When glibc is built as a shared library, TLS is always initialized by the call of TLS_INIT_TP () macro made inside the dynamic loader, prior to running the main program (see dl-call_tls_init_tp.h). We can take advantage of this: we know for sure that __LIBC_NO_TLS () will evaluate to 0 in all other cases, so let the compiler know that explicitly too. Also, only define _hurd_tls_init () and TLS_INIT_TP () under the same conditions (either !SHARED or inside rtld), to statically assert that this is the case. Other than a microoptimization, this also helps with avoiding awkward sharing of the __libc_tls_initialized variable between ld.so and libc.so that we would have to do otherwise -- we know for sure that no sharing is required, simply because __libc_tls_initialized would always be set to true inside libc.so. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-25-bugaevc@gmail.com>
* hurd: Remove __hurd_local_reply_portSergey Bugaev2023-04-143-14/+60
| | | | | | | | | | | | | | | | | | Now that the signal code no longer accesses it, the only real user of it was mig-reply.c, so move the logic for managing the port there. If we're in SHARED and outside of rtld, we know that __LIBC_NO_TLS () always evaluates to 0, and a TLS reply port will always be used, not __hurd_reply_port0. Still, the compiler does not see that __hurd_reply_port0 is never used due to its address being taken. To deal with this, explicitly compile out __hurd_reply_port0 when we know we won't use it. Also, instead of accessing the port via THREAD_SELF->reply_port, this uses THREAD_GETMEM and THREAD_SETMEM directly, avoiding possible miscompilations. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Mark two tests as unsupportedSamuel Thibault2023-04-131-0/+10
| | | | They make the whole testsuite hang/crash.
* hurd: Restore destroying receive rights on sigreturnSamuel Thibault2023-04-131-2/+2
| | | | | Just subtracting a ref is making signal/tst-signal signal/tst-raise signal/tst-minsigstksz-5 htl/tst-raise1 fail.
* Revert "hurd: Only check for TLS initialization inside rtld or in static builds"Samuel Thibault2023-04-116-83/+33
| | | | | | | | This reverts commit b37899d34d2190ef4b454283188f22519f096048. Apparently we load libc.so (and thus start using its functions) before calling TLS_INIT_TP, so libc.so functions should not actually assume that TLS is always set up.
* hurd: Don't leak __hurd_reply_port0Sergey Bugaev2023-04-112-1/+13
| | | | | | | | | | | | | Previously, once we set up TLS, we would implicitly switch from using __hurd_reply_port0 to reply_port inside the TCB, leaving the former unused. But we never deallocated it, so it got leaked. Instead, migrate the port into the new TCB's reply_port slot. This avoids both the port leak and an extra syscall to create a new reply port for the TCB. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-28-bugaevc@gmail.com>
* hurd: Improve reply port handling when exiting signal handlersSergey Bugaev2023-04-101-16/+5
| | | | | | | | | | | | | | | | | If we're doing signals, that means we've already got the signal thread running, and that implies TLS having been set up. So we know that __hurd_local_reply_port will resolve to THREAD_SELF->reply_port, and can access that directly using the THREAD_GETMEM and THREAD_SETMEM macros. This avoids potential miscompilations, and should also be a tiny bit faster. Also, use mach_port_mod_refs () and not mach_port_destroy () to destroy the receive right. mach_port_destroy () should *never* be used on mach_task_self (); this can easily lead to port use-after-free vulnerabilities if the task has any other references to the same port. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-26-bugaevc@gmail.com>
* hurd: Only check for TLS initialization inside rtld or in static buildsSergey Bugaev2023-04-106-34/+85
| | | | | | | | | | | | | | | | | | | | | When glibc is built as a shared library, TLS is always initialized by the call of TLS_INIT_TP () macro made inside the dynamic loader, prior to running the main program (see dl-call_tls_init_tp.h). We can take advantage of this: we know for sure that __LIBC_NO_TLS () will evaluate to 0 in all other cases, so let the compiler know that explicitly too. Also, only define _hurd_tls_init () and TLS_INIT_TP () under the same conditions (either !SHARED or inside rtld), to statically assert that this is the case. Other than a microoptimization, this also helps with avoiding awkward sharing of the __libc_tls_initialized variable between ld.so and libc.so that we would have to do otherwise -- we know for sure that no sharing is required, simply because __libc_tls_initialized would always be set to true inside libc.so. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-25-bugaevc@gmail.com>
* hurd: Port trampoline.c to x86_64Sergey Bugaev2023-04-101-7/+151
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230403115621.258636-3-bugaevc@gmail.com>
* hurd: Do not declare local variables volatileSergey Bugaev2023-04-101-2/+2
| | | | | | | | | | | | | | These are just regular local variables that are not accessed in any funny ways, not even though a pointer. There's absolutely no reason to declare them volatile. It only ends up hurting the quality of the generated machine code. If anything, it would make sense to decalre sigsp as *pointing* to volatile memory (volatile void *sigsp), but evidently that's not needed either. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230403115621.258636-2-bugaevc@gmail.com>
* hurd: Implement x86_64/intr-msg.hSergey Bugaev2023-04-101-0/+119
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-18-bugaevc@gmail.com>
* hurd: Add sys/ucontext.h and sigcontext.h for x86_64Sergey Bugaev2023-04-102-0/+169
| | | | | | | This is based on the Linux port's version, but laid out to match Mach's struct i386_thread_state, much like the i386 version does. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Stop depending on the default_pager stubs provided by gnumachFlavio Cruz2023-04-102-4/+2
| | | | | | The hurd source tree already provides the same stubs and they are only needed there. Message-Id: <ZDN3rDdjMowtUWf7@jupiter.tail36e24.ts.net>
* htl: move pthread_self info libc.Guy-Fleury Iteriteka2023-04-052-2/+2
| | | | | Signed-off-by: Guy-Fleury Iteriteka <gfleury@disroot.org> Message-Id: <20230318095826.1125734-4-gfleury@disroot.org>
* htl: move ___pthread_self into libc.Guy-Fleury Iteriteka2023-04-053-2/+25
| | | | | | | | | | | sysdeps/mach/hurd/htl/pt-pthread_self.c: New file. htl/Makefile: .. Add it to libc routine. sysdeps/mach/hurd/htl/pt-sysdep.c(__pthread_self): Remove it. sysdeps/mach/hurd/htl/pt-sysdep.h(__pthread_self): Add hidden propertie. htl/Versions(__pthread_self) Version it as private symbol. Signed-off-by: Guy-Fleury Iteriteka <gfleury@disroot.org> Message-Id: <20230318095826.1125734-3-gfleury@disroot.org>
* hurd: Add vm_param.h for x86_64Sergey Bugaev2023-04-031-0/+24
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-30-bugaevc@gmail.com>
* hurd: Implement _hurd_longjmp_thread_state for x86_64Sergey Bugaev2023-04-031-0/+41
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-29-bugaevc@gmail.com>
* htl: Implement thread_set_pcsptp for x86_64Sergey Bugaev2023-04-031-0/+73
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-23-bugaevc@gmail.com>
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