Exec Functions

Main functions for executing a command. More...

Functions
char **	copy_toks (t_data *data, t_command *command)
	Creates a copy of all tokens that are in a command structure It's used for forks during exec.
int	prepare_command (t_data *data)
	Prepare the command for search_command()
int	prepare_command_forks (t_data *data)
int	search_command (t_data *data, t_command *command, char **tokens)
	Search if command is a builtin or not.
int	not_builtins (t_data *data, t_command *command, char **tokens)
	Executes commands that are not builtins.
int	handle_redirections (t_garbage *garbage, t_command *command, int fd_backup[2])
	Create and redirect inputs and outputs needed for the command.
void	reset_redirection (t_garbage *garbage, t_command *command, int fd_backup[2], unsigned char i)
	Reset redirections by default values Replace the new redirections by stdin and stdout.
int	needs_to_be_forked (t_command *command)
	Check if it needs to be forked.
int	execve_fork (t_data *data, char *path, char **toks, char **envp)
int	handle_redirections_forks (t_garbage *garbage, t_command *command)
	Create and redirect inputs and outputs needed for the command.

Detailed Description

Main functions for executing a command.

Function Documentation

copy_toks()

char ** copy_toks	(	t_data *	data,
		t_command *	command )

Creates a copy of all tokens that are in a command structure It's used for forks during exec.

Parameters

data	data structure
command	command structure

Returns

char** copy of tokens

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execve_fork()

int execve_fork	(	t_data *	data,
		char *	path,
		char **	toks,
		char **	envp )

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handle_redirections()

int handle_redirections	(	t_garbage *	garbage,
		t_command *	command,
		int	fd_backup[2] )

Create and redirect inputs and outputs needed for the command.

Parameters

garbage	garbage structure
command	command structure
fd_backup	pointer of 2 integers for stdin and stdout backup

Returns

int 0 or positive OK, negative ERROR

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handle_redirections_forks()

int handle_redirections_forks	(	t_garbage *	garbage,
		t_command *	command )

Create and redirect inputs and outputs needed for the command.

Parameters

garbage	garbage structure
command	command structure

Returns

int 0 or positive OK, negative ERROR

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needs_to_be_forked()

int needs_to_be_forked

(

t_command *

command

)

Check if it needs to be forked.

Parameters

command

command structure

Returns

int 0 NO, 1 YES

not_builtins()

int not_builtins	(	t_data *	data,
		t_command *	command,
		char **	tokens )

Executes commands that are not builtins.

Parameters

data	data structure
command	command structure
tokens	array of strings

Returns

int

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prepare_command()

int prepare_command

(

t_data *

data

)

Prepare the command for search_command()

Parameters

data	data structure

Returns

int

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prepare_command_forks()

int prepare_command_forks

(

t_data *

data

)

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reset_redirection()

void reset_redirection	(	t_garbage *	garbage,
		t_command *	command,
		int	fd_backup[2],
		unsigned char	i )

Reset redirections by default values Replace the new redirections by stdin and stdout.

Parameters

garbage	garbage structure
command	command structure
fd_backup	pointer of 2 integers for stdin and stdout backup
i	value used for recursion

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search_command()

int search_command	(	t_data *	data,
		t_command *	command,
		char **	tokens )

Search if command is a builtin or not.

Parameters

data	data structure
command	command structure
tokens	array of strings

Returns

int 0 if command found, 1 otherwise

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