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add a debug shell command to replace with a login shell

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This commit is contained in:
Kevin Lange 2014-06-07 20:44:13 -07:00
parent dfc5901575
commit 09c8678953
1 changed files with 13 additions and 2 deletions
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15
modules/debug_shell.c
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@ -102,7 +102,7 @@ int debug_shell_readline(fs_node_t * dev, char * linebuf, int max) {
static void debug_shell_run_sh(void * data, char * name) {
char * argv[] = {
"/bin/sh",
data,
NULL
};
int argc = 0;
@ -120,13 +120,22 @@ static hashmap_t * shell_commands_map = NULL;
* Shell commands
*/
static int shell_create_userspace_shell(fs_node_t * tty, int argc, char * argv[]) {
int pid = create_kernel_tasklet(debug_shell_run_sh, "[[k-sh]]", NULL);
int pid = create_kernel_tasklet(debug_shell_run_sh, "[[k-sh]]", "/bin/sh");
fprintf(tty, "Shell started with pid = %d\n", pid);
int status;
waitpid(pid,&status,0);
return status;
}
static int shell_replace_login(fs_node_t * tty, int argc, char * argv[]) {
/* We need to fork to get a clean task space */
create_kernel_tasklet(debug_shell_run_sh, "[[k-sh]]", "/bin/login");
/* Then exit the shell process */
task_exit(0);
/* unreachable */
return 0;
}
static int shell_echo(fs_node_t * tty, int argc, char * argv[]) {
for (int i = 1; i < argc; ++i) {
fprintf(tty, "%s ", argv[i]);
@ -489,6 +498,8 @@ static int shell_exit(fs_node_t * tty, int argc, char * argv[]) {
static struct shell_command shell_commands[] = {
{"shell", &shell_create_userspace_shell,
"Runs a userspace shell on this tty."},
{"login", &shell_replace_login,
"Replace the debug shell with /bin/login."},
{"echo", &shell_echo,
"Prints arguments."},
{"help", &shell_help,