syscalls: implement sysctl and add process listing

kernel-src/include/kernel/proc.h

@@ -13,6 +13,8 @@
 
 #include <kernel/thread.h>
 
+#include <kernel/sysctl.h>
+
 #ifdef __x86_64__
 #include <arch/ldt.h>
 #endif
@@ -90,6 +92,11 @@ typedef struct proc_t {
 		itimer_t virtualtime;
 		itimer_t profiling;
 	} timer;
+
+	char name[SYS_CTL_KERN_PROC_INFO_NAME_SIZE];
+	timespec_t start_time;
+	spinlock_t runtime_lock;
+	timespec_t total_runtime;
 } proc_t;
 
 
@@ -125,5 +132,6 @@ void proc_init(void);
 void proc_exit(void);
 void proc_run_init();
 size_t proc_get_count(void);
+size_t proc_get_table(proc_t **procs, size_t count);
 
 #endif

kernel-src/include/kernel/sysctl.h

@@ -0,0 +1,42 @@
+#ifndef _SYSCTL_H
+#define _SYSCTL_H
+
+#include <kernel/abi.h>
+#include <time.h>
+
+#define SYS_CTL_NAME_MAX 6
+
+#define SYS_CTL_KERN 1
+#define SYS_CTL_KERN_PROC 1
+#define SYS_CTL_KERN_PROC_ALL 1
+
+#define SYS_CTL_KERN_PROC_INFO_NAME_SIZE 64
+#define SYS_CTL_KERN_PROC_INFO_TTY_NAME_SIZE 64
+
+typedef struct {
+	pid_t pid;
+	uid_t uid;
+	uid_t euid;
+	uid_t suid;
+	gid_t gid;
+	gid_t egid;
+	gid_t sgid;
+	size_t thread_count;
+	char name[SYS_CTL_KERN_PROC_INFO_NAME_SIZE];
+	pid_t ppid;
+	pid_t pgid;
+	pid_t sid;
+	timespec_t start_timestamp;
+	timespec_t total_runtime;
+	int state;
+	int cpu_time;
+	int nice;
+	size_t virtual_pages;
+	size_t physical_pages;
+	char tty_name[SYS_CTL_KERN_PROC_INFO_TTY_NAME_SIZE];
+} sysctl_proc_info_t;
+
+int sysctl(const int *name, size_t name_len, void *oldp, size_t *old_lenp, void *newp, size_t new_len);
+int sysctl_kern(const int *name, size_t name_len, void *oldp, size_t *old_lenp, void *newp, size_t new_len);
+
+#endif

kernel-src/include/kernel/tty.h

@@ -44,5 +44,6 @@ void tty_process(tty_t *tty, char c);
 void tty_unregister(tty_t *tty);
 int tty_ioctl(tty_t *tty, unsigned long req, void *arg, int *result, cred_t *cred);
 size_t tty_opened(tty_t *tty);
+void tty_release(tty_t *tty);
 
 #endif

kernel-src/include/string.h

@@ -6,6 +6,7 @@
 size_t strlen(const char *str);
 size_t strnlen(const char *str, size_t max);
 char *strcpy(char *dest, const char *src);
+char *strncpy(char *dest, const char *src, size_t n);
 char *strcat(char *dest, const char *str);
 void *memcpy(void *dest, const void *src, size_t size);
 void *memset(void *dest, int what, size_t size);
@@ -15,5 +16,6 @@ int memcmp(const void *a, const void *b, size_t s);
 void *memmove(void *_d, const void *_s, size_t c);
 char *strerror(int errno);
 long long atoll(const char *c);
+char *strrchr(const char *s, char c);
 
 #endif