29c59abf7d
Kernel: Rename blocking_wait_info's wait_pid to pid
2022-10-30 19:28:43 +01:00
9c3792718c
Kernel: Remove waitpid() debug messages and add more checks
2022-10-30 19:24:56 +01:00
c68d040484
Scheduler: Make sure we are in the kernel's address space when resuming a blocked process
2022-10-30 19:10:46 +01:00
b8296eb92d
su: Also set group ID
2022-10-28 17:55:56 +02:00
09a615bd99
Kernel, libc: Expose processes' UID and GID in pstat()
2022-10-28 17:31:34 +02:00
0115cce750
Kernel/VFS: Add file owners and file modes, and check those in system calls
2022-10-28 17:10:28 +02:00
16dc227a05
Kernel: Add UID and GID fields to Task
2022-10-28 17:06:13 +02:00
fcf53ef6a5
Kernel: Make waitpid() block by default unless WNOHANG is specified
2022-10-27 17:05:42 +02:00
06e6429567
Kernel: Reorganize a bit of scheduler code
2022-10-27 08:07:34 +02:00
af46b8d9ac
Kernel: Cleanup file descriptor validation
2022-10-25 18:35:17 +02:00
bcdcfc4b45
Kernel: Add a pstat() system call
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Not part of C or POSIX, but since there is no procfs right now, I thought it would be nice to have an interface to query process information.
It works like this: you pass the process ID and a pointer to a struct pstat (can be null).
If the process ID is -1, the kernel picks the process with the highest PID.
Then, if the pointer to a pstat struct is not null, the kernel fills it in with the process's information, and returns the process's PID.
2022-10-22 14:26:29 +02:00
6816a5b11f
Scheduler: do not reboot on PID 1 exit if we are in a test
2022-10-22 11:56:08 +02:00
da61e3648f
Kernel: Implement blocking reads
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This is a huge step forward!! bc actually runs now, without echo or backspace, but it runs!!
2022-10-21 21:26:19 +02:00
27448611b3
UserMemory: do not map refs into kernel memory
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This is bad design. But it fails if mapped, since something overwrites KernelHeap.
2022-10-20 18:50:07 +02:00
cd9ecc1746
Kernel: Return EFAULT when the kernel believes the wstatus pointer is invalid
2022-10-20 08:20:56 +02:00
1938a059a2
Kernel: Free the last spawned thread's PID on exit
2022-10-19 20:51:54 +02:00
51665a04b7
Kernel: Restart if init exits
2022-10-19 20:33:41 +02:00
7e9744419e
sh: Improve it
2022-10-19 20:16:21 +02:00
b035795eb3
Kernel: Move errno.h and (k)assert.h out of the main include directory
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This is mostly so IDEs don't pick them up instead of the userspace headers :)
2022-10-19 17:41:23 +02:00
f3af3e252b
Kernel: refresh task_misbehave()
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That function was severely outdated.
2022-10-19 17:26:36 +02:00
656667812a
Kernel: reparent child processes to PID 1 when their parent exits
2022-10-19 17:16:01 +02:00
a29f7f8df2
Kernel: waitpid: support -1 as PID (wait for any child)
2022-10-19 17:15:30 +02:00
671f2a2de3
Kernel, libc: Implement waitpid()
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FIXME: exec() is now doing weird page table stuff. But at least it works, no panics :)
2022-10-18 21:30:52 +02:00
59506b8852
Kernel: Show current_task's name in the log
2022-10-18 18:41:17 +02:00
a9d3bdba6f
Kernel: Keep track of a task's PPID
2022-10-18 17:18:37 +02:00
4f41b9ed37
Scheduler: Implement a find_by_pid function
2022-10-17 20:40:38 +02:00
ea8a42b8c0
Kernel: Add a name field to the Task structure
2022-10-17 19:12:47 +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
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
891651f2d6
Task: Move functions operating on Task to member functions
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Also, add an alloc_fd_greater_than_or_equal() function, for use in fcntl(F_DUPFD)
2022-10-17 17:00:07 +02:00
9b39d618de
Kernel, libc: Implement spawn()
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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
62d631f1b4
Kernel: Rename assert.h to kassert.h so IDEs pickup the kernel header instead of the userspace one
2022-10-15 12:56:48 +02:00
3eb1bff2e9
Task: add an alloc_fd() function
2022-10-15 10:45:12 +02:00
c8a92af4d2
Whoops! bugfix
2022-10-14 18:21:09 +02:00
1c3377fc98
Prepare for cloning address spaces, not there yet
2022-10-14 18:17:57 +02:00
e43777bd31
Apparently, it just works now.
2022-10-14 18:00:33 +02:00
81f56083c5
Almost there!
2022-10-14 17:38:29 +02:00
5abd8814e3
Kernel: Continue moving utilities to a separate subdirectory
2022-10-14 17:33:06 +02:00
e21b608af4
Utilities: Start moving utilities into specific headers in a utils/ subdirectory
2022-10-14 17:31:47 +02:00
9b3c7816a3
Scheduler: pop the interrupt state when returning early from load_user_task()
2022-10-14 16:54:52 +02:00
0c7c249935
exec is still doing some weird stuff, totally corrupting the page tables
2022-10-13 22:20:24 +02:00
24272c57ef
Almost there!
2022-10-13 21:55:51 +02:00
ee712432bd
Some more multiple address space stuff
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This page-faults. This is because the memory where the ELF should be is all zeroes, which the CPU tries to interpret.
2022-10-13 21:14:39 +02:00
1a54342454
Sanity check
2022-10-12 18:38:18 +02:00
3ac9fed23a
ELFLoader: Add check_elf_image() and check_elf_image_from_filesystem()
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These two functions validate an image, without actually loading it. Very useful for exec!
2022-10-12 18:37:00 +02:00
f8b3567042
Kernel: Add an exec() syscall
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Very bare-bones for now. Doesn't support arguments or environment (we don't have that stuff right now), and the executable is not a valid ELF, it terminates the task.
But it's a start!
2022-10-12 17:42:01 +02:00
25a460e3c6
Scheduler: clear user tasks' registers
2022-10-12 17:12:06 +02:00
136c0b3ae9
Scheduler: add a reset_task function
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This can be used later to implement execve()
2022-10-12 17:08:45 +02:00
