e76ccd6c4c
kernel+libc+init: Add getppid() and wait()
continuous-integration/drone/push Build is passing
2023-03-24 17:39:55 +01:00
7efcc06090
kernel+init+sh: Implement parent processes and waitpid(-1, ...)
continuous-integration/drone/push Build is passing
2023-03-24 17:37:04 +01:00
b6fb5f3dfe
kernel+libc: Implement waitpid()
continuous-integration/drone/push Build is passing
2023-03-23 22:42:24 +01:00
41c7e3780d
kernel: Add support for exit codes and start preparing for waitpid()
2023-03-23 22:25:56 +01:00
51f0bdff0e
kernel+libc: Add O_NONBLOCK
continuous-integration/drone/push Build is passing
2023-03-19 11:25:14 +01:00
41514d9ad2
kernel: Add support for blocking reads
2023-03-19 11:21:50 +01:00
54f2d35416
kernel: Add the fork() system call
2023-03-18 23:45:48 +01:00
a4ac3c85ed
kernel+libc: Copy argv to userspace
continuous-integration/drone/push Build is passing
2023-03-18 22:25:19 +01:00
0b00dc3fe4
kernel/exec: Rename item to string_addr
continuous-integration/drone/push Build is passing
2023-03-18 21:56:34 +01:00
7f50893786
kernel/exec: Copy argv from userspace
continuous-integration/drone/push Build is passing
2023-03-18 21:55:16 +01:00
49952320d6
kernel+libluna: Remove console_write entirely
continuous-integration/drone/push Build is passing
2023-03-18 20:12:59 +01:00
7173c05a22
kernel: Add support for special device files and add a mknod() syscall
2023-03-18 09:10:33 +01:00
59838f1225
kernel: Replace some raw divisions with get_blocks_from_size()
2023-03-16 23:01:35 +01:00
8c72e9a49a
kernel: Add an exec() system call
...
continuous-integration/drone/push Build is passing
Doesn't support arguments or environment for now.
2023-03-16 22:44:58 +01:00
08c888eaae
kernel+libc: Remove (de)allocate_memory and replace it with POSIX mmap
continuous-integration/drone/push Build is passing
2023-03-14 20:43:15 +01:00
d66506256d
kernel/VFS+libc: Introduce modes
continuous-integration/drone/push Build is passing
2023-03-12 16:55:46 +01:00
02dbcbbfa1
kernel: Add strdup_from_user()
continuous-integration/drone/push Build is passing
2023-03-12 16:30:36 +01:00
682d3c753e
kernel+libc: Add mkdir()
continuous-integration/drone/push Build is passing
2023-03-12 15:32:09 +01:00
354ffd033c
VFS: Add a size() method to inodes to implement seeking to the end of a file
continuous-integration/drone/push Build is passing
2023-03-12 14:49:21 +01:00
b54a7f3a80
kernel+libc: Add O_* flags and parse them in open()
...
continuous-integration/drone/push Build is passing
O_RDONLY, O_WRONLY, O_RDWR, O_TRUNC, O_CREAT and O_EXCL are fully implemented.
O_APPEND is partially implemented.
Other flags are not here yet.
2023-03-12 14:43:58 +01:00
bd572473ad
kernel: Remove FileDescriptorTable and add a helper to resolve fds to FileDescriptors
2023-03-12 13:57:38 +01:00
7e655e320a
kernel+libc: Add the lseek() syscall, and fseek, ftell, rewind, fsetpos, and fgetpos
continuous-integration/drone/push Build is passing
2023-03-12 13:15:24 +01:00
292433dc39
kernel+libc: Add the write() system call, and fwrite()
2023-03-12 11:37:41 +01:00
c0a7f6776f
kernel+libc: Add getpid()
continuous-integration/drone/push Build is passing
2023-03-11 22:19:58 +01:00
8fa72f3cf0
kernel+libc: Implement read()
continuous-integration/drone/push Build is passing
2023-03-11 18:02:50 +01:00
810c4bc257
kernel+libc: Start interfacing with the VFS from userspace (open & close)
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This commit adds open and close syscalls to the kernel, and adds matching wrappers to libc.
No read/write support, so file descriptors are kind of useless for now.
2023-03-11 17:45:20 +01:00
7f8a8cdcaf
kernel, libc: Add an usleep() system call and use that to implement usleep() and sleep() in libc
continuous-integration/drone/push Build is passing
2023-01-22 15:00:20 +01:00
139c0b5eb1
Kernel: Make a UserVM wrapper around Bitmap and use that to allocate user VM
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This lets us allocate more than one page of memory from the user side.
2023-01-13 19:05:20 +01:00
9454b65682
allocate_memory: Respect PROT_NONE
2023-01-12 17:59:17 +01:00
586ca19b62
Add a VERY BASIC and hacky way of allocating memory from userspace
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continuous-integration/drone/push Build is passing
Only supports one-page allocations and doesn't have libc wrappers, which means it has to be invoked using syscall().
2023-01-11 23:02:42 +01:00
7e377ef712
Implement printf()
continuous-integration/drone/push Build is passing
2023-01-07 01:49:26 +01:00
a8a64863c8
kernel, libc: Add clock_gettime()
2023-01-07 00:21:08 +01:00
fd8a0175d9
Add a syscall infrastructure (our baby program can print to the console now!)
continuous-integration/drone/push Build is passing
2023-01-05 22:39:56 +01:00
cf758fdfdc
Initial commit :)
2022-11-13 10:09:09 +01:00
42efc21110
Start implementing read and write support in tmpfs
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write seems to work fine, read just hangs there, waiting.
2022-11-12 20:11:26 +01:00
5c51b82f6a
Kernel: Remove obtain_user_ref and add copy_typed_to and from_user
2022-11-12 12:08:26 +01:00
58fb422161
Kernel: Return a Result in MemoryManager and strdup_from_user
2022-11-12 11:56:40 +01:00
d76af10e70
Kernel: Move initrd into the fs/ folder
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It makes more sense to put it in there.
2022-11-09 16:03:16 +01:00
1ea216dfd1
Kernel: Rename assert.h to ensure.h
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The macro is named "ensure", the header file should reflect that.
2022-11-09 15:28:35 +01:00
accf7ee417
libc: Add unimplemented st_nlink field
2022-11-09 11:36:21 +01:00
033c41cbd7
Kernel: Rework the uid/gid system to make it compliant
2022-11-09 09:54:07 +01:00
98da473fdc
Run clang-format
2022-11-08 19:07:43 +01:00
44815b08c7
Kernel: Use copy_from_user() and copy_to_user() in read/write
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This is huge. Finally, we can do proper reads/writes with invalid addresses, or big buffers.
2022-11-06 15:19:23 +01:00
b63a9f5ba9
Kernel: Improve strdup_from_user and add copy to and from user
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Still a bit funky, that's why we're not using it in read() and write() yet.
2022-11-05 11:54:55 +01:00
ffcaac0ca3
Kernel: Add validate_user_write() and validate_user_read()
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Not at copy_from_user and copy_to_user yet, but an improvement over blindly using physical memory.
2022-11-04 22:46:48 +01:00
e5b2641019
Kernel: Enforce W^X when loading executables
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From now on, if an executable contains segments that
want to be loaded as both writable and executable,
we refuse and abort with ENOEXEC.
2022-11-03 20:28:54 +01:00
0fd31698b2
Kernel: Accept not opened file descriptors in dup2()
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This involves renaming the descriptor_from_fd function to the more appropriately named
open_descriptor_from_fd (since we check if the descriptor was opened and error out otherwise),
and creating a new function that does not verify that the file descriptor was opened.
2022-11-03 16:52:21 +01:00
249c79f8a3
Kernel, libc: Add ioctl()
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Right now, only the framebuffer supports this system call, to query its dimensions.
2022-11-02 20:59:42 +01:00
feab66c0d3
Kernel: Remove the paint() system call
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That was a very old one from back in the old days. Now that the framebuffer is finally a device file,
and it can be memory-mapped by user programs for more performance,
this syscall is MORE than obsolete.
2022-11-02 20:35:06 +01:00
8f2308c80d
Kernel: Implement mmap-able device files (regular files are not mmap-able yet)
2022-11-02 20:24:07 +01:00
