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29 hourskernel: Ensure mutually exclusive console accessIan Moffett
If multiple processes try to write to the console, a race condition of sorts may occur. Similarly, if multiple processes try to read from the console and contend with the console input buffer. One process may steal keys from the other. Prevent this by implementing a mutex within the console descriptor. Each time a process reads or writes the console, it attaches itself. Any other processes attempting to read or write the console while another is attached will be yielded to the scheduler until the resource is free. Signed-off-by: Ian Moffett <ian@osmora.org>
30 hourskernel: devfs: Add block device stat mechanismIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
30 hourskernel: synch: Add mutual exclusion locksIan Moffett
Add mutex locks, these differ from spinlocks as they are named and also yield to the scheduler instead of just spinning if the lock is acquired. Signed-off-by: Ian Moffett <ian@osmora.org>
31 hoursusr: libc: Add POSIX getpid() and getppid()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
31 hourskernel: proc: Add getpid() and getppid()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
31 hourskernel: driver: Implement driver blacklistIan Moffett
Sometimes one may not want *all* of the drivers to start up during system boot. The driver blacklist allows one to mark a driver to be ignored during startup. Signed-off-by: Ian Moffett <ian@osmora.org>
31 hourskernel: driver: Assign names to all driversIan Moffett
Assign a name to each driver through the DRIVER_EXPORT() or DRIVER_DEFER() macros. This can be used for blacklisting driver startups. Signed-off-by: Ian Moffett <ian@osmora.org>
2 dayskernel/aarch64: Add 'board_info' structureIan Moffett
Introduce a 'board_info' structure as well as an md_get_board() routine to get information about the host Signed-off-by: Ian Moffett <ian@osmora.org>
2 dayskernel: console: Add 'show_curs' feat flagIan Moffett
Add 'show_curs' feat flag to enable/disable whether or not the cursor should be drawn Signed-off-by: Ian Moffett <ian@osmora.org>
3 dayskernel: console: Introduce cons_screen featuresIan Moffett
Introduce a 'feat' field in the cons_screen structure to allow certain console features to be turned on or off. Signed-off-by: Ian Moffett <ian@osmora.org>
4 dayskernel: tmpfs: Add 'mode' field to tmpfs nodesIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
4 dayskernel: tmpfs: Store the *real* size in a nodeIan Moffett
The 'len' field within the tmpfs node stores the buffer length which is relative to the tmpfs block size. Introduce a real size which returns the amount of data actually present within those buffers. Signed-off-by: Ian Moffett <ian@osmora.org>
4 dayskernel: vnode: Only include vm/*.h ifdef _KERNELIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
5 dayskernel: Introduce SYS_inject syscallIan Moffett
The SYS_inject syscall will allow the user to inject Kernel Runtime Quantums (KRQs) into the running kernel. As of now, set paths are not supported and the initial implementation includes a NULL path used to load all deferrable drivers. Previously during kernel startup, all deferrable drivers were loaded automatically. This commit makes it so that they are only loaded when sys_inject() is called with a NULL path. Signed-off-by: Ian Moffett <ian@osmora.org>
6 daysusr: libc: Store auxiliary vector tag/value pairsIan Moffett
This commit introduces the global libc '__libc_auxv' containing auxiliary vector entries as per the System V Application Binary Interface Signed-off-by: Ian Moffett <ian@osmora.org>
6 dayskernel: exec_elf64: Ensure '.bss' is zero filledIan Moffett
Implement logic to go through the section header table and explicitly zero fill all entries of type SHT_NOBITS Signed-off-by: Ian Moffett <ian@osmora.org>
7 dayskernel: Add initial support for tmpfsIan Moffett
Introduce the initial support for tmpfs, a readable and writable in-memory filesystem. Signed-off-by: Ian Moffett <ian@osmora.org>
7 dayskernel: vfs: Add support for O_CREAT flagIan Moffett
Add support for the O_CREAT flag which allows file creation upon an open() call. Signed-off-by: Ian Moffett <ian@osmora.org>
8 dayskernel: namei: Add NAMEI_WANTPARENT flagIan Moffett
In some lookup cases, we may only be interested in the parent component. For example, the parent of "/foo/bar/mrow" is "/foo/bar/". The NAMEI_WANTPARENT asks namei to only look for the parent rather than the full path. Signed-off-by: Ian Moffett <ian@osmora.org>
10 dayskernel: Add SMBIOS/DMI supportIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
12 dayskernel: mman: Make MAP_ANON 0x0000Ian Moffett
MAP_ANON does not need to be treated as any specific flag bits as it isn't even checked with mmap() Signed-off-by: Ian Moffett <ian@osmora.org>
12 dayssys: param: Add PTR_NOFFSET define to sub pointersIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
12 dayskernel: Fix base-16 style in endian.hIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
13 dayskernel: e1000: Read MAC address into `netif'Ian Moffett
This commit implements EEPROM reading logic as well as some code to read the ethernet address into a `netif' structure. Signed-off-by: Ian Moffett <ian@osmora.org>
13 dayskernel: e1000: Use raw register VAP offsetsIan Moffett
The E1000 may add padding in-between registers and for the sake of simplicity, we will deal with raw offsets instead of a silly structure. Signed-off-by: Ian Moffett <ian@osmora.org>
13 dayskernel: phy: Add initial E1000 sourcesIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
13 dayskernel/amd64: mc1468xx: Add year, month and dayIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-20kernel/amd64: intr: Add driver specific intr dataIan Moffett
Allow the intr_hand structure to carry driver specific and interrupt related data so that it can be passed to an interrupt handler when it is invoked. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-20kernel/amd64: intr: Ensure intr_hand.name has '\0'Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-20kernel/amd64: Remove unused 'intr_entry' structIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-19kernel: pmap: Add arch-shared pmap_init() routineIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-19kernel/aarch64: Add exception code + frame fixupsIan Moffett
- Add handle_exception() as higher level logic to handle the exceptions - Simplify frame.h - Call C handler in vector.S - Clean up stack after creating frame - Add register dump on exception Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-19kernel: Add __aligned(n) attributeIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-18kernel/aarch64: frame: Remove extra whitespaceIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-18kernel/aarch64: Implement initial vector stubsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-18kernel/aarch64: Add intr_register() stubIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-18kernel/aarch64: Make stubs up to dateIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-18kernel/aarch64: cdefs: Make halt macro properIan Moffett
- md_halt() -> md_hlt() - Pass dummy operand Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-17kernel: time: Introduce SYS_sleepIan Moffett
Add SYS_sleep to put a thread to sleep for some time through a timespec Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-17kernel: Introduce timespec structIan Moffett
- Introduce timespec structure for nanosecond/second precision Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-17kernel: Remove deprecated func declarationIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-17kernel: netinet: Implement ARP reply logicIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-16kernel: net: Implement IEEE 802.3 + ARP requestsIan Moffett
Introduce IEEE 802.3 related headers such as ones containing the structure of an ethernet frame as well as its types. This commit additionally introduces ARP request logic. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-16kernel: Add sys/endian.hIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-16kernel: rtl: Expose NIC properly through if_var.hIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-15kernel: rtl: Implement packet TXIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-13kernel: cons: Clear entire screen on demandIan Moffett
- Flush the entire output buffer - Wipe the whole screen with "bg" - The entire console will now be cleared when a "\033[H" sequence is encountered Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-13kernel: spawn: Add argv + stub envp argumentsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-13kernel/amd64: Return stack top after stack initIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-06-12kernel: pci: Add support for PCI ExpressIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
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