exec_utils.c File Reference

Execution utilities. More...

#include <sys/wait.h>
#include <stdio.h>
#include "executor.h"
#include "builtins.h"
#include "libft.h"

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Detailed Description

Execution utilities.

Definition in file exec_utils.c.

Functions
int	exec_cmd_not_found (char *cmd)
	Print "command not found" to STDERR. More...
int	is_builtin (char *cmd)
	Check if a command is a shell builtin. More...
int	exec_builtin (char **args, t_shell *shell)
	Dispatch a builtin command to its function. More...
int	exec_simple_command (char **args, t_shell *shell)
	Execute a simple command (builtin or external) More...
int	pipe_fork_error (int pipe_fd[2], pid_t left_pid)
	Clean up pipe fds and wait for left child on fork failure. More...

Function Documentation

exec_cmd_not_found()

int exec_cmd_not_found

(

char *

cmd

)

Print "command not found" to STDERR.

Parameters

cmd	Command name that wasn't found

Returns

always 127 (standard bash)

Definition at line 25 of file exec_utils.c.

Referenced by prepare_exec().

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is_builtin()

int is_builtin

(

char *

cmd

)

Check if a command is a shell builtin.

Parameters

cmd	Command name to check

Returns

1 if builtin or 0 if external

Definition at line 39 of file exec_utils.c.

Referenced by exec_simple_command().

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exec_builtin()

int exec_builtin	(	char **	args,
		t_shell *	shell
	)

Dispatch a builtin command to its function.

Parameters

args	Argument array with arg[0] being the command name
shell	Shell context

Returns

Exit status from the builtin function

Definition at line 67 of file exec_utils.c.

References builtin_cd(), builtin_echo(), builtin_env(), builtin_exit(), builtin_export(), builtin_pwd(), builtin_unset(), and t_shell::env.

Referenced by exec_simple_command().

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exec_simple_command()

int exec_simple_command	(	char **	args,
		t_shell *	shell
	)

Execute a simple command (builtin or external)

Parameters

args	NULL terminated argument array
shell	Shell context

Returns

Exit status of the command

Definition at line 95 of file exec_utils.c.

References exec_builtin(), exec_external(), and is_builtin().

Referenced by exec_command_node().

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pipe_fork_error()

int pipe_fork_error	(	int	pipe_fd[2],
		pid_t	left_pid
	)

Clean up pipe fds and wait for left child on fork failure.

Parameters

pipe_fd	Pipe file descriptors to close
left_pid	PID of left child (0 if wasn't yet forked)

Returns

always 1 (exit code = error)

Definition at line 111 of file exec_utils.c.

Referenced by handle_pipe().

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