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29 hourskernel: fs: Introduce ctlfsIan Moffett
ctlfs (Control FS) is a filesystem aimed to provide configuration of devices separate from their respective devices files. Most UNIX-like systems rely on the ioctl() mechanism for sending commands to device drivers, while this certainly works, it is important to realize how messy it can get having massive switch cases per driver. ctlfs fixes this by giving each device a "node" in ctlfs that contains several control files. For example, imagine we have a SCSI device (/dev/sd1). Its ctlfs counterpart would be a directory at /ctl/sd1/. For an hdd this may contain files such as: /ctl/sd1/bsize # Block size if read (mode [rwx]: -w-) /ctl/sd1/cmd # Command if written, status if read (mode [rwx]: rw-) ... et cetera Signed-off-by: Ian Moffett <ian@osmora.org>
30 hourskernel: vfs: Allow multi component lookupsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-18kernel: Startup osh instead of initIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-18kernel: exec_elf64: Better loggingIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-18kernel: sched: Always sync on sched entryIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-18kernel: descrip: Fix copyin/copyout + rw operationIan Moffett
Use ssize_t to avoid unsigned integer underflows and only call copyout() during file reads Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-18kernel: Initialize vm subsystem earlierIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-17kernel: Add copyrightIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-17kernel: Reconsider the idea of init systemsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-17kernel: sched: Default to MLFQIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-17kernel: synch: Add system-wide lockingIan Moffett
Add system-wide locking for critical code sections. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-17kernel: Enable interrupts upon sched entryIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-17kernel: sched: Returns as soon as resultIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-17kernel: synch: Add lazy spinlock acquireIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-04-15kernel: sched: Run oneshots foreverIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-25kernel: vm: Add initial mmap() implIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-03-19kernel: panic: Add hcf() and bas()Ian Moffett
hcf(): Halt and catch fire (used for debugging mostly) bas(): Burn and sizzle - internal usage Signed-off-by: Ian Moffett <ian@osmora.org>
2025-02-22kernel: dev: Add /dev/consoleIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-02-22kernel: vfs: Add support for write()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2025-02-21kernel: Update kernel log styleIan Moffett
Kernel logs must now all be lowercase for consistency. A new style called Peripheral Description Notation (PDN) has also been introduced to describe devices. Signed-off-by: Ian Moffett <ian@osmora.org>
2025-02-16project: Update copyright date to 2025Ian Moffett
Was supposed to happen on Jan 1, sorry! Happy late new year! Signed-off-by: Ian Moffett <ian@osmora.org>
2025-02-15kernel: signal: No need to compare ksig_listIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-20kernel/amd64: backtrace() -> md_backtrace()Ian Moffett
Maintain naming consistency between public machine-dependent and machine-independent functions. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-20kernel/amd64: Add panic backtraceIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-16kernel: synch: Move spinlock_usleep()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-15kernel: synch: kern_lock.c -> kern_synch.cIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-15kernel: synch: Add spinlock with timeoutIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-15kernel: Add tree.h and tree_subr.c portIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-07kernel: vcache: Add impl of "local" vcachesIan Moffett
This commit implements local vcaches and lazy vcache migration (LZVM) for on the fly vcache type switching. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-12-07kernel: vcache: Improve vcache add/pull interfaceIan Moffett
Require internal add/pull routines to be passed a pointer to the vcache to be operated on. This makes it easier to support for per-process vcaches and LZVM. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-13kernel: vfs: Recycle vnodes before allocatingIan Moffett
This commit makes changes to how vnodes are allocated and released. When we want to allocate a new vnode, we check if there is something we can recycle before calling dynalloc(). Instead of calling dynfree() on a vnode, enter it into the vnode cache. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-13kernel: sysctl: Fix handling of oldlenpIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-13kernel: vfs: Add vnode cache implementationIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-13kernel: sysctl: Make sysctl(2) more flexibleIan Moffett
This commit makes various changes such as updating how readonly and writable entries are stored and how entry lookups are made to improve flexibility. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-12kernel: sysctl: Make kern.* entries readonlyIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-12kernel: syscall: Add SYS_sysctl syscallIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-11kernel: sysctl: Add initial sysctl implementationIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-04kernel: descrip: Add support for fd duplicationIan Moffett
Sometimes we may need to duplicate a file descriptor and create a new fdno that refers to the same vnode. The fd_dup() function enables us to do this when needed. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-11-04kernel: descrip: Only use copyinstr() in SYS_openIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-10-29kernel: syscall: Add SYS_statIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-09-09kernel: vfs: Refactor fd related codeIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-08-21kernel: vfs: Add sys_close()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-08-21kernel: Add ref count to filedescIan Moffett
Keep track of how many threads are currently using the file descriptor. This will be useful when fork() is implemented. Signed-off-by: Ian Moffett <ian@osmora.org>
2024-08-12kernel: Remove extra newlineIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-08-12kernel: Add initial support for signalsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-07-24kernel: device: Add read/write stubsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-07-22kernel: sched: Implement MLFQAptRock327
Implements the Multilevel Feedback Queue scheduling algorithm. Signed-off-by: AptRock327 <dominik032009@gmail.com> Signed-off-by: Ian Moffett <ian@osmora.org>
2024-07-22kernel: vfs_syscalls: Add sys_read()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-07-22kernel: vfs_syscalls: Remove unused varsIan Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
2024-07-22kernel: vfs_syscalls: Add sys_open()Ian Moffett
Signed-off-by: Ian Moffett <ian@osmora.org>
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