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path: root/kernel/src/arch/x86_64/syscalls/shm.cpp
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Diffstat (limited to 'kernel/src/arch/x86_64/syscalls/shm.cpp')
-rw-r--r--kernel/src/arch/x86_64/syscalls/shm.cpp224
1 files changed, 0 insertions, 224 deletions
diff --git a/kernel/src/arch/x86_64/syscalls/shm.cpp b/kernel/src/arch/x86_64/syscalls/shm.cpp
deleted file mode 100644
index 7c2a278..0000000
--- a/kernel/src/arch/x86_64/syscalls/shm.cpp
+++ /dev/null
@@ -1,224 +0,0 @@
-
-#include <arch/x86_64/syscalls/syscalls.hpp>
-#include <generic/vfs/vfs.hpp>
-
-#include <arch/x86_64/cpu/data.hpp>
-#include <arch/x86_64/scheduling.hpp>
-
-#include <generic/mm/pmm.hpp>
-#include <generic/mm/vmm.hpp>
-
-#include <generic/vfs/fd.hpp>
-
-#include <etc/assembly.hpp>
-#include <etc/logging.hpp>
-
-#include <drivers/cmos.hpp>
-
-#include <etc/libc.hpp>
-
-#include <drivers/tsc.hpp>
-
-#include <etc/errno.hpp>
-
-#include <drivers/hpet.hpp>
-#include <drivers/kvmtimer.hpp>
-#include <generic/time.hpp>
-#include <generic/vfs/vfs.hpp>
-
-#include <etc/bootloaderinfo.hpp>
-#include <generic/locks/spinlock.hpp>
-
-static_assert(sizeof(shm_seg_t) < 4096, "shm_seg is bigger than page size !");
-
-locks::spinlock shm_lock;
-shm_seg_t* shm_head;
-
-int shm_id_ptr = 0;
-
-shm_seg_t* shm_find_by_key(int key) {
- shm_seg_t* current = shm_head;
- while(current) {
- if(current->key == key)
- return current;
- }
- return 0;
-}
-
-shm_seg_t* shm_find(int id) {
- shm_seg_t* current = shm_head;
- while(current) {
- if(current->id == id)
- return current;
- }
- return 0;
-}
-
-void shm_rm(shm_seg_t* seg) {
- shm_seg_t* prev = shm_head;
- while(prev) {
- if(prev->next == seg)
- break;
- prev = prev->next;
- }
-
- if(shm_head == seg)
- shm_head = seg->next;
- else if(prev)
- prev->next = seg->next;
-
- memory::pmm::_physical::free(seg->phys);
- delete (void*)seg;
-}
-
-shm_seg_t* shm_create(int key, size_t size) {
- shm_seg_t* new_seg = new shm_seg_t;
- memset(new_seg,0,sizeof(shm_seg_t));
- new_seg->next = shm_head;
- shm_head = new_seg;
- new_seg->key = key;
- new_seg->id = shm_id_ptr++;
- new_seg->len = size;
- new_seg->phys = memory::pmm::_physical::alloc(new_seg->len);
- return new_seg;
-}
-
-#define IPC_CREAT 01000
-#define IPC_EXCL 02000
-#define IPC_NOWAIT 04000
-
-syscall_ret_t sys_shmget(int key, size_t size, int shmflg) {
-
- arch::x86_64::process_t* proc = CURRENT_PROC;
- std::uint64_t src_size = size;
-
- if(size < 4096) {
- size = 4096;
- } else {
- size = ALIGNUP(size,4096);
- }
-
- shm_lock.lock();
-
- shm_seg_t* seg = shm_find_by_key(key);
-
- shm_lock.unlock();
-
- if(seg && ((shmflg & IPC_CREAT) && (shmflg & IPC_EXCL)))
- return {1,EEXIST,0};
-
- if(!seg && !(shmflg & IPC_CREAT))
- return {1,ENOENT,0};
-
- shm_lock.lock();
-
- if(shmflg & IPC_CREAT) {
- seg = shm_create(key,size);
- seg->ctl.shm_segsz = src_size;
- seg->ctl.shm_ctime = getUnixTime();
- seg->ctl.shm_cpid = proc->id;
- seg->ctl.shm_perm.cuid = proc->uid;
- seg->ctl.shm_perm.uid = proc->uid;
- seg->ctl.shm_perm.mode = shmflg & 0x1FF;
- }
-
- DEBUG(proc->is_debug,"Creating/getting shm for proc %d, id %d, size %lli, src_size %d, shmflg %d",proc->id,seg->id,size,src_size,shmflg);
-
- shm_lock.unlock();
-
- return {1,0,seg->id};
-}
-
-// inline static void* map(arch::x86_64::process_t* proc, std::uint64_t base, std::uint64_t length, std::uint64_t flags) {
-
-// inline static void* custom_map(arch::x86_64::process_t* proc, std::uint64_t virt, std::uint64_t phys, std::uint64_t length, std::uint64_t flags) {
-
-syscall_ret_t sys_shmat(int shmid, std::uint64_t hint, int shmflg) {
-
- shm_lock.lock();
-
- shm_seg_t* seg = shm_find(shmid);
-
- arch::x86_64::process_t* proc = CURRENT_PROC;
-
- if(!seg) { shm_lock.unlock();
- return {1,EINVAL,0}; }
-
- std::uint64_t new_hint = hint;
-
- new_hint = memory::vmm::shm_map(proc,seg,hint);
-
- memory::paging::enablepaging(proc->original_cr3); // try to reset tlb
-
- DEBUG(proc->is_debug,"Attaching shm %d to 0x%p, shmflg %d from proc %d",shmid,new_hint,shmflg,proc->id);
-
- shm_lock.unlock();
- return {1,0,new_hint};
-}
-
-syscall_ret_t sys_shmdt(std::uint64_t base) {
-
- arch::x86_64::process_t* proc = CURRENT_PROC;
-
- shm_lock.lock();
- vmm_obj_t* vmm_new = memory::vmm::getlen(proc,base);
-
- if(!vmm_new) { shm_lock.unlock();
- return {0,EINVAL,0}; }
-
- if(!vmm_new->shm) {
- shm_lock.unlock();
- return {0,EINVAL,0};
- }
-
- shm_seg_t* seg = vmm_new->shm;
- //memory::vmm::unmap(proc,vmm_new->base);
-
- DEBUG(proc->is_debug,"Removing shm %d, base 0x%p from proc %d",seg->id,base,proc->id);
-
- shm_lock.unlock();
- return {0,0,0};
-}
-
-syscall_ret_t sys_shmctl(int shmid, int cmd, struct shmid_ds *buf) {
-
- arch::x86_64::process_t* proc = CURRENT_PROC;
-
- shm_lock.lock();
-
- shm_seg_t* seg = shm_find(shmid);
-
- if(!seg) { shm_lock.unlock();
- return {0,EINVAL,0}; }
-
- if(!buf) { shm_lock.unlock();
- return {0,EINVAL,0};
- }
-
- switch(cmd) {
- case IPC_RMID: {
- seg->is_pending_rm = 1;
- if(seg->ctl.shm_nattch == 0 && seg->is_pending_rm) {
- shm_rm(seg);
- }
- break;
- }
- case IPC_STAT:
- memcpy(buf,&seg->ctl,sizeof(shmid_ds));
- break;
- case IPC_SET:
- seg->ctl.shm_perm.uid = buf->shm_perm.uid;
- seg->ctl.shm_perm.gid = buf->shm_perm.gid;
- seg->ctl.shm_ctime = getUnixTime();
- seg->ctl.shm_perm.mode = buf->shm_perm.mode;
- break;
- default:
- Log::SerialDisplay(LEVEL_MESSAGE_WARN,"Unknown shmctl cmd %d for id %d from proc %d\n",cmd,shmid,proc->id);
- break;
- }
-
- DEBUG(proc->is_debug,"shmctl id %d cmd %d buf 0x%p from proc %d\n",shmid,cmd,buf,proc->id);
-
- shm_lock.unlock();
- return {0,0,0};
-} \ No newline at end of file
generated by cgit v1.2.3 (git 2.46.0) at 2026-04-02 18:37:47 +0000