| commit | 41aac872341fbf70f3b7006ef266eb02a354a993 | |
| author | Sergey Bugaev <bugaevc@gmail.com> | |
| Sat, 29 Apr 2023 13:13:51 +0000 (29 16:13 +0300) | ||
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | |
| Sat, 29 Apr 2023 14:53:47 +0000 (29 16:53 +0200) | ||
| tree | 295d9bd4b7ca177d0e4a4022a6f076b5b63fdfbd | treesnapshot (tar.gz zip) |
| parent | a9fb57105e9abd7919478226ee802270d1b3b9df | commitdiff |
hurd: Make _exit work during early boot-up
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>
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>
| sysdeps/mach/hurd/_exit.c | diffblobblamehistory |