formatting

This commit is contained in:
Laureηt 2021-04-20 18:50:27 +02:00
parent ab6da28992
commit 3295e0df03
5 changed files with 111 additions and 77 deletions

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jobs

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3
jobs.c
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@ -1,5 +1,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "jobs.h"
void ajouter(list* l_ptr, int pid, int id) {
@ -42,8 +43,6 @@ void supprimer(list* l_ptr, int pid) {
cursor->next = cursor_next;
}
}
void afficher(list* l_ptr) {

10
jobs.h
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@ -3,8 +3,10 @@
typedef struct cell cell;
struct cell {
int pid;
int id;
int pid;
int state;
char* cmd;
cell* next;
};
@ -17,4 +19,8 @@ void initialiser(list* list);
void liberer(list* list);
int contiens(list* l_ptr, int pid);
#endif
#endif
// state:
// 0: running
// 1: suspended

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minishell

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@ -15,88 +15,117 @@ int prompting = 0;
int job_id = 1;
list jobs;
void handler_print(int signal_num, siginfo_t* info) {
if (contiens(&jobs, info->si_pid)) {
if (prompting) { printf("\n"); }
printf("[%d] --> (%d) %s\n", info->si_pid, signal_num, strsignal(signal_num));
supprimer(&jobs, info->si_pid);
job_id--;
}
void handler_print(int signal_num, siginfo_t *info)
{
if (contiens(&jobs, info->si_pid))
{
if (prompting)
{
printf("\n");
}
printf("[%d] --> (%d) %s\n", info->si_pid, signal_num, strsignal(signal_num));
supprimer(&jobs, info->si_pid);
job_id--;
}
}
int main(int argc, char *argv[]) {
int main(int argc, char *argv[])
{
extern int errno;
initialiser(&jobs);
extern int errno;
struct sigaction action;
action.sa_flags = SA_SIGINFO; //| SA_RESTART;
action.sa_handler = handler_print;
sigemptyset(&action.sa_mask);
sigaction(SIGCHLD, &action, NULL);
initialiser(&jobs);
struct sigaction action;
action.sa_flags = SA_SIGINFO; //| SA_RESTART;
action.sa_handler = handler_print;
sigemptyset(&action.sa_mask);
sigaction(SIGCHLD, &action, NULL);
char initcd[256], currentcd[256];
getcwd(initcd, 256);
char initcd[256], currentcd[256];
getcwd(initcd, 256);
while (1) {
getcwd(currentcd, 256);
printf("%s >>> ", currentcd);
prompting = 1;
struct cmdline* cmd = readcmd();
prompting = 0;
while (1)
{
getcwd(currentcd, 256);
printf("%s >>> ", currentcd);
prompting = 1;
struct cmdline *cmd = readcmd();
prompting = 0;
if (cmd == NULL || cmd->seq[0] == NULL) { // ligne vide, on skip
continue;
} else if (!strcmp(cmd->seq[0][0], "exit")) { // on quitte le shell
break;
} else if (!strcmp(cmd->seq[0][0], "cd")) { // cd
if (cmd->seq[0][1] == NULL) { // vide
chdir(initcd);
} else { // avec un path
chdir(cmd->seq[0][1]);
}
continue;
} else if (!strcmp(cmd->seq[0][0], "jobs")) {
afficher(&jobs);
continue;
}
pid_t pidFils = fork();
if (pidFils == -1) {
fprintf(stderr, "ERROR: forking failed, %s\n", strerror(errno));
exit(errno);
}
if (pidFils == 0) { // fils
execvp(cmd->seq[0][0], cmd->seq[0]);
exit(errno); // si execlp échoue on exit avec une erreur
} else { // père
if (cmd->backgrounded) {
ajouter(&jobs, pidFils, job_id++);
} else {
jmp_buf env;
setjmp(env);
int codeTerm;
pid_t idFils = waitpid(pidFils, &codeTerm, 0); // on attend la fin de l'exec du fils
if (idFils == -1){
// todo : peut mieux faire ?
if (errno == 4) {
longjmp(env, 1);
}
fprintf(stderr, "ERROR: waiting for %d failed, (%d) %s\n", codeTerm, errno, strerror(errno));
exit(errno);
if (cmd == NULL || cmd->seq[0] == NULL)
{ // ligne vide, on skip
continue;
}
else if (!strcmp(cmd->seq[0][0], "exit"))
{ // on quitte le shell
break;
}
else if (!strcmp(cmd->seq[0][0], "cd"))
{ // cd
if (cmd->seq[0][1] == NULL)
{ // vide
chdir(initcd);
}
else
{ // avec un path
chdir(cmd->seq[0][1]);
}
continue;
}
else if (!strcmp(cmd->seq[0][0], "jobs"))
{
afficher(&jobs);
continue;
}
}
}
}
pid_t pidFils = fork();
return EXIT_SUCCESS;
if (pidFils == -1)
{
fprintf(stderr, "ERROR: forking failed, %s\n", strerror(errno));
exit(errno);
}
if (pidFils == 0)
{ // fils
int test = execvp(cmd->seq[0][0], cmd->seq[0]);
exit(errno); // si execlp échoue on exit avec une erreur
}
else // père
{
if (cmd->backgrounded)
{
ajouter(&jobs, pidFils, job_id++);
}
else
{
jmp_buf env;
setjmp(env);
int codeTerm;
pid_t idFils = waitpid(pidFils, &codeTerm, 0); // on attend la fin de l'exec du fils
if (idFils == -1)
{ // si le wait fail
if (errno == 4)
{ // todo : peut mieux faire ?
longjmp(env, 1);
}
else
{
fprintf(stderr, "ERROR: waiting for %d failed, (%d) %s\n", codeTerm, errno, strerror(errno));
exit(errno);
}
}
if (codeTerm)
{
fprintf(stderr, "ERROR: %d's execution failed, (%d) %s\n", pidFils, codeTerm, strerror(codeTerm));
}
}
}
}
return EXIT_SUCCESS;
}