Mon 14 Oct 23:09:15 CEST 2024
This commit is contained in:
parent
124d789899
commit
18514f31ae
210
user/shell.c
Normal file
210
user/shell.c
Normal file
|
|
@ -0,0 +1,210 @@
|
|||
#include "library/string.h"
|
||||
#include "library/syscalls.h"
|
||||
#include "kernel/types.h"
|
||||
#include "library/stdio.h"
|
||||
#include "library/stdlib.h"
|
||||
#include "kernel/ascii.h"
|
||||
#include "library/errno.h"
|
||||
#include "library/kernel_object_string.h"
|
||||
|
||||
#define MAX_LINE_LENGTH 1024
|
||||
|
||||
void print_directory(char *d, int length)
|
||||
{
|
||||
while(length > 0) {
|
||||
printf("%s\n", d);
|
||||
int len = strlen(d) + 1;
|
||||
d += len;
|
||||
length -= len;
|
||||
}
|
||||
}
|
||||
|
||||
void do_table()
|
||||
{
|
||||
printf("Object Table:\n");
|
||||
char tag[16];
|
||||
int i, max = syscall_object_max();
|
||||
for(i=0;i<=max;i++) {
|
||||
int type = syscall_object_type(i);
|
||||
if(type>=0) {
|
||||
tag[0] = 0;
|
||||
syscall_object_get_tag(i,tag,sizeof(tag));
|
||||
printf("%d: %s (%s)\n",i,kernel_object_string(type),tag);
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
|
||||
int do_command(char *line)
|
||||
{
|
||||
const char *pch = strtok(line, " ");
|
||||
if(pch && !strcmp(pch, "echo")) {
|
||||
pch = strtok(0, " ");
|
||||
if(pch)
|
||||
printf("%s\n", pch);
|
||||
} else if(pch && !strcmp(pch, "start")) {
|
||||
pch = strtok(0, " ");
|
||||
if(pch) {
|
||||
const char *argv[20];
|
||||
argv[0] = pch;
|
||||
int i = 1;
|
||||
char *next;
|
||||
while((next = strtok(0, " "))) {
|
||||
argv[i++] = next;
|
||||
}
|
||||
int fd = syscall_open_file(KNO_STDDIR,argv[0],0,0);
|
||||
if(fd>=0) {
|
||||
int pid = syscall_process_fork();
|
||||
if(pid != 0) {
|
||||
printf("started process %d\n", pid);
|
||||
} else {
|
||||
syscall_process_exec(fd, 2, argv);
|
||||
}
|
||||
} else {
|
||||
printf("couldn't find %s: %s\n",argv[0],strerror(fd));
|
||||
}
|
||||
|
||||
} else {
|
||||
printf("start: missing argument\n");
|
||||
}
|
||||
} else if(pch && !strcmp(pch, "run")) {
|
||||
pch = strtok(0, " ");
|
||||
if(pch) {
|
||||
const char *argv[20];
|
||||
argv[0] = pch;
|
||||
int i = 1;
|
||||
char *next;
|
||||
while((next = strtok(0, " "))) {
|
||||
argv[i++] = next;
|
||||
}
|
||||
int fd = syscall_open_file(KNO_STDDIR,argv[0],0,0);
|
||||
if(fd>=0) {
|
||||
int pid = syscall_process_run(fd, i, &argv[0]);
|
||||
if(pid > 0) {
|
||||
printf("started process %d\n", pid);
|
||||
syscall_process_yield();
|
||||
struct process_info info;
|
||||
syscall_process_wait(&info, -1);
|
||||
printf("process %d exited with status %d\n", info.pid, info.exitcode);
|
||||
syscall_process_reap(info.pid);
|
||||
} else {
|
||||
printf("couldn't run %s: %s\n", argv[0],strerror(pid));
|
||||
}
|
||||
syscall_object_close(fd);
|
||||
} else {
|
||||
printf("couldn't find %s: %s\n", argv[0],strerror(fd));
|
||||
}
|
||||
|
||||
} else {
|
||||
printf("run: requires argument\n");
|
||||
}
|
||||
} else if(pch && !strcmp(pch, "reap")) {
|
||||
pch = strtok(0, " ");
|
||||
int pid;
|
||||
if(pch && str2int(pch, &pid)) {
|
||||
if(syscall_process_reap(pid)) {
|
||||
printf("reap failed!\n");
|
||||
} else {
|
||||
printf("processed reaped!\n");
|
||||
}
|
||||
} else
|
||||
printf("reap: expected process id number but got %s\n", pch);
|
||||
} else if(pch && !strcmp(pch, "kill")) {
|
||||
pch = strtok(0, " ");
|
||||
int pid;
|
||||
if(pch && str2int(pch, &pid)) {
|
||||
syscall_process_kill(pid);
|
||||
} else
|
||||
printf("kill: expected process id number but got %s\n", pch);
|
||||
|
||||
} else if(pch && !strcmp(pch, "wait")) {
|
||||
pch = strtok(0, " ");
|
||||
if(pch)
|
||||
printf("%s: unexpected argument\n", pch);
|
||||
else {
|
||||
struct process_info info;
|
||||
if(syscall_process_wait(&info, 5000) > 0) {
|
||||
printf("process %d exited with status %d\n", info.pid, info.exitcode);
|
||||
} else {
|
||||
printf("wait: timeout\n");
|
||||
}
|
||||
}
|
||||
} else if(pch && !strcmp(pch, "list")) {
|
||||
const char *arg = strtok(0," ");
|
||||
if(!arg) arg = "/";
|
||||
char buffer[1024];
|
||||
int fd = syscall_open_dir(KNO_STDDIR,arg,0);
|
||||
if(fd>=0) {
|
||||
int length = syscall_object_list(fd, buffer, 1024);
|
||||
syscall_object_close(fd);
|
||||
print_directory(buffer, length);
|
||||
}
|
||||
} else if(pch && !strcmp(pch, "enter")) {
|
||||
char *path = strtok(0, " ");
|
||||
if(!path) {
|
||||
printf("Incorrect arguments, usage: enter <path>\n");
|
||||
return 1;
|
||||
}
|
||||
int fd = syscall_open_dir(KNO_STDDIR,path,0);
|
||||
if(fd>=0) {
|
||||
syscall_object_copy(fd,KNO_STDDIR);
|
||||
syscall_object_close(fd);
|
||||
printf("entered %s\n",path);
|
||||
} else {
|
||||
printf("couldn't enter %s: %s\n",path,strerror(fd));
|
||||
}
|
||||
} else if(pch && !strcmp(pch,"table")) {
|
||||
do_table();
|
||||
} else if(pch && !strcmp(pch, "help")) {
|
||||
printf("Commands:\necho <text>\nrun <path>\nmount <unit_no> <fs_type>\nlist\nstart <path>\nkill <pid>\nreap <pid>\nwait\ntable\nhelp\nexit\n");
|
||||
} else if(pch && !strcmp(pch, "exit")) {
|
||||
exit(0);
|
||||
} else if(pch) {
|
||||
printf("%s: command not found\n", pch);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int readline( char *line, int length )
|
||||
{
|
||||
int i = 0;
|
||||
char c;
|
||||
while(1) {
|
||||
syscall_object_read(0, &c, 1, 0);
|
||||
if(c == ASCII_CR) {
|
||||
printf_putchar(c);
|
||||
flush();
|
||||
line[i] = 0;
|
||||
return i;
|
||||
} else if(c == ASCII_BS) {
|
||||
if(i>0) {
|
||||
i--;
|
||||
printf_putchar(c);
|
||||
flush();
|
||||
}
|
||||
} else {
|
||||
if(i<(length-1)) {
|
||||
line[i] = c;
|
||||
i++;
|
||||
printf_putchar(c);
|
||||
flush();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
char line[MAX_LINE_LENGTH];
|
||||
|
||||
do_table();
|
||||
|
||||
while(1) {
|
||||
printf("shell> ");
|
||||
flush();
|
||||
if(readline(line,sizeof(line))) {
|
||||
do_command(line);
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user