bb00e3c112
Kernel: Guard against recursive panics
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Previously, when we panicked (page-fault for example) while dumping a kernel panic, it would just loop over and over again.
Now, we check if we were already in a panic, and limit the dump:
- No stack trace.
- Only a few registers.
- Only serial (since we can page fault while writing to the framebuffer)
This should make recursive panics much more difficult to achieve.
If we page-fault while writing to console, we don't even see a panic (not even in serial) and eventually triple-fault.
So this patch is actually more user-friendly.
2022-10-18 21:08:21 +02:00
59506b8852
Kernel: Show current_task's name in the log
2022-10-18 18:41:17 +02:00
f1bfa6bec8
Build system: more cflags + stripping
2022-10-18 18:28:28 +02:00
01564cb905
libc: Adapt libc to getprocid() + add getppid()
2022-10-18 17:36:33 +02:00
52d391507d
Kernel: Rename the getpid() syscall to getprocid()
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Now, we have one single system call to fetch all sorts of identifiers:
PID, PPID, UID, GID; EUID, EGID, and more...
2022-10-18 17:36:17 +02:00
a9d3bdba6f
Kernel: Keep track of a task's PPID
2022-10-18 17:18:37 +02:00
bdf1bb15a1
StackTracer: only show kernel addresses for now, until there are more checks
2022-10-18 17:14:09 +02:00
48d68a3e31
Kernel: Switch back to kernel address space on kernel panic
2022-10-18 17:13:43 +02:00
92d8c9d4d5
Next version!
2022-10-17 21:28:35 +02:00
3c1146f2c5
libc: Implement setjmp() and longjmp()
2022-10-17 21:22:18 +02:00
511ad67a9a
fdopen: Check for malloc errors
2022-10-17 20:54:32 +02:00
e17a21dbad
libc: Use fdopen() after calling open() in fopen()
2022-10-17 20:54:09 +02:00
494b48bbe3
init: Adjust init
2022-10-17 20:53:09 +02:00
4f41b9ed37
Scheduler: Implement a find_by_pid function
2022-10-17 20:40:38 +02:00
8b17065718
Kernel, libc: Rename gettid() to getpid() and move it to unistd.h
2022-10-17 20:08:44 +02:00
87ef210759
Kernel, libc: Remove spawn()
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Now, fork() and exec() are both implemented. More POSIX-y, thus spawn can be removed.
2022-10-17 19:55:01 +02:00
55808d5cc4
Update README.md with new features
2022-10-17 19:39:34 +02:00
1e96a45f33
Change 'tid' to 'PID' in init.c
...
I think tasks can be considered programs now. So, gettid() is equal to getpid().
In fact, it should be renamed. And moved to unistd.h. Soon.
2022-10-17 19:39:26 +02:00
a2c05de604
mmap(), mprotect(), munmap(): Check more stuff
2022-10-17 19:32:24 +02:00
c2ecc4fe95
Update README.md
2022-10-17 19:32:02 +02:00
593daba651
Kernel: Remove unused headers in main.cpp
2022-10-17 19:23:53 +02:00
ea8a42b8c0
Kernel: Add a name field to the Task structure
2022-10-17 19:12:47 +02:00
e7522c21ca
libc: Document fork()
2022-10-17 18:56:04 +02:00
34fc6996b0
UserHeap: allocate needed memory in request_virtual_pages
2022-10-17 18:52:11 +02:00
92634048fc
UserHeap: some nice improvements
2022-10-17 18:49:19 +02:00
64f5078494
Kernel, libc: Implement fork()
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This time for real.
Also, add a new per-user-task virtual address allocator (UserHeap), so that mmap'ed pages are in user range and can be copied.
2022-10-17 18:43:35 +02:00
966fdc76d7
Move userspace task to userspace memory
2022-10-17 17:30:05 +02:00
b334e1cd50
VMM: check if the entry is already present
2022-10-17 17:26:16 +02:00
682be58d97
AddressSpace: copy instead of linking
2022-10-17 17:24:33 +02:00
3bf4f854c7
init: return 0 at the end of main
2022-10-17 17:19:31 +02:00
8b70635e79
Do not strip apps
2022-10-17 17:19:23 +02:00
250db2c90f
Scheduler: add an append_task() function
2022-10-17 17:14:22 +02:00
c2fa4f380d
Kernel: Use the new Task member functions
2022-10-17 17:07:25 +02:00
ce10fb5743
fcntl(F_DUPFD): Allocate any file descriptor greater than or equal to arg
2022-10-17 17:01:22 +02:00
891651f2d6
Task: Move functions operating on Task to member functions
...
Also, add an alloc_fd_greater_than_or_equal() function, for use in fcntl(F_DUPFD)
2022-10-17 17:00:07 +02:00
e34045a78c
Kernel: on stack smashing detection, do not trigger a normal panic
...
That triggers stack traces, which we do not want in a stack smash fail situation
2022-10-16 19:04:24 +02:00
9b39d618de
Kernel, libc: Implement spawn()
...
This function is a Luna alternative to fork() and exec().
Why? Simply because I can't figure out for the life of me how to implement a working fork().
So meanwhile, we have spawn() as a replacement. exec() still exists, though.
2022-10-16 18:48:35 +02:00
a1146a5ce2
Panic: show panic message on screen
2022-10-16 18:23:33 +02:00
6d821d2638
libc: Add support for mkdir()
2022-10-16 17:37:29 +02:00
f35bbe52b7
fnctl: Do not switch on cmd
2022-10-16 17:27:15 +02:00
e1e86ab889
libc: Add support for EEXIST, ENOTDIR, ENOSPC, ENOTSUP and EPIPE to strerror()
2022-10-16 17:24:58 +02:00
d2e2883a79
Kernel: Make mkdir() accessible to userspace
2022-10-16 17:22:12 +02:00
18fbccafb7
VFS: add an exists() function
2022-10-16 16:58:18 +02:00
0a46feb162
Add strnlen test
2022-10-16 16:00:14 +02:00
d62eb6c791
Tests: Add test framework
2022-10-16 15:31:58 +02:00
f8154ce230
Kernel: Implement mkdir() from a single path
...
This is done using dirname() and basename() :)
2022-10-16 14:45:25 +02:00
8c0a57f0c2
Kernel: Copy strrchr, dirname and basename over from libc
2022-10-16 14:36:25 +02:00
1624f0360d
exec: More logging
2022-10-15 17:47:57 +02:00
d30010d524
apps/sym: Read from the end of the file
2022-10-15 17:45:53 +02:00
68403dc029
Kernel: Make AddressSpaces reference-counted
2022-10-15 17:40:33 +02:00
