-
Notifications
You must be signed in to change notification settings - Fork 0
/
execute.c
50 lines (46 loc) · 1.37 KB
/
execute.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
#include "shell.h"
/**
* _execute - Executes a command in a new child process.
* @command: Null-terminated array of strings representing the cmd to execute.
* @argv: Null-terminated array of strings representing the args to the cmd.
* @i: The index of the command in the argv array.
*
* Return: The exit status of the command.
*/
int _execute(char **command, char **argv, int i)
{
char *whole_cmd;
pid_t childProcess; /* Process ID of the child process */
int status; /* Exit status of the child process */
/* Get the full path of the command */
whole_cmd = _getpath(command[0]);
/* If the command was not found, print an error message and return 127 */
if (whole_cmd == NULL)
{
print_error(argv[0], command[0], i);
emptyArrayOfStrings(command);
return (127);
}
/* Create a new child process */
childProcess = fork();
/* If this is the child process */
if (childProcess == 0)
{
/* Execute the command. If it fails, clean up and exit. */
if (execve(whole_cmd, command, environ) == -1)
{
free(whole_cmd), whole_cmd = NULL;
emptyArrayOfStrings(command);
}
}
/* If this is the parent process */
else
{
/* Wait for the child process to finish and get its exit status */
waitpid(childProcess, &status, 0);
emptyArrayOfStrings(command);
free(whole_cmd), whole_cmd = NULL;
}
/* Return the exit status of the command */
return (WEXITSTATUS(status));
}