diff options
Diffstat (limited to 'sys/include')
| -rw-r--r-- | sys/include/sys/proc.h | 5 | ||||
| -rw-r--r-- | sys/include/sys/signal.h | 84 |
2 files changed, 89 insertions, 0 deletions
diff --git a/sys/include/sys/proc.h b/sys/include/sys/proc.h index b9db603..b10ee41 100644 --- a/sys/include/sys/proc.h +++ b/sys/include/sys/proc.h @@ -38,6 +38,7 @@ #include <sys/syscall.h> #include <sys/exec.h> #include <sys/filedesc.h> +#include <sys/signal.h> #if defined(_KERNEL) #include <machine/frame.h> #include <machine/pcb.h> @@ -48,10 +49,12 @@ #define PROC_STACK_PAGES 8 #define PROC_STACK_SIZE (PROC_STACK_PAGES * DEFAULT_PAGESIZE) #define PROC_MAX_FILEDES 256 +#define PROC_SIGMAX 64 struct proc { pid_t pid; struct exec_prog exec; + struct ksiginfo *ksig_list[PROC_SIGMAX]; struct filedesc *fds[PROC_MAX_FILEDES]; struct trapframe tf; struct pcb pcb; @@ -59,6 +62,8 @@ struct proc { bool rested; uint32_t flags; uintptr_t stack_base; + struct spinlock ksigq_lock; + TAILQ_HEAD(, ksiginfo) ksigq; TAILQ_ENTRY(proc) link; }; diff --git a/sys/include/sys/signal.h b/sys/include/sys/signal.h new file mode 100644 index 0000000..f35ff82 --- /dev/null +++ b/sys/include/sys/signal.h @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _SYS_SIGNAL_H_ +#define _SYS_SIGNAL_H_ + +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/proc.h> + +#define SIGFPE 8 /* Floating point exception */ +#define SIGKILL 9 /* Kill */ +#define SIGSEGV 11 /* Segmentation violation */ + +typedef uint32_t sigset_t; + +typedef struct { + int si_signo; + int si_code; +} siginfo_t; + +struct sigaction { + void(*sa_handler)(int signo); + sigset_t sa_mask; + int sa_flags; + void(*sa_sigaction)(int signo, siginfo_t *si, void *p); +}; + +#if defined(_KERNEL) +struct proc; + +struct ksiginfo { + int signo; + int sigcode; + struct sigaction *si; + TAILQ_ENTRY(ksiginfo) link; +}; + +/* Signal management */ +int newsig(struct proc *td, int signo, struct ksiginfo **ksig); +int delsig(struct proc *td, int signo); +int sendsig(struct proc *td, const sigset_t *set); +void dispatch_signals(struct proc *td); +int signals_init(struct proc *td); + +/* Sigset functions */ +int sigemptyset(sigset_t *set); +int sigfillset(sigset_t *set); +int sigaddset(sigset_t *set, int signo); +int sigdelset(sigset_t *set, int signo); +int sigismember(const sigset_t *set, int signo); + +/* Default handlers */ +void sigfpe_default(int signo); +void sigkill_default(int signo); +void sigsegv_default(int signo); +#endif /* _KERNEL */ +#endif /* !_SYS_SIGNAL_H_ */ |