proc_system.c File Reference

Implements OP_PROC_SYSTEM to execute a shell command and return exit code. More...

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Functions
	free_value (cmdv)
	if (!cmd)
	push_value (vm, make_int(code))
	free (cmd)

Variables
case	OP_PROC_SYSTEM
char *	cmd = value_to_string_alloc(&cmdv)
int	status = system(cmd)
int	code = -1
	break

Detailed Description

Implements OP_PROC_SYSTEM to execute a shell command and return exit code.

Behavior:

• Pops command (string); executes it using system(3); pushes the process exit code (int) or -1 on failure.

Errors:

• If command is not a string or cannot be executed, returns -1.

Definition in file proc_system.c.

Function Documentation

free()

free

(

cmd

)

free_value()

free_value

(

cmdv

)

if()

if

(

!

cmd

)

Definition at line 26 of file proc_system.c.

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push_value()

push_value	(	vm	,
		make_int(code)	)

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Variable Documentation

break

break

Definition at line 44 of file proc_system.c.

cmd

char* cmd = value_to_string_alloc(&cmdv)

Definition at line 24 of file proc_system.c.

code

code = -1

Definition at line 31 of file proc_system.c.

OP_PROC_SYSTEM

case OP_PROC_SYSTEM

Definition at line 21 of file proc_system.c.

status

int status = system(cmd)

Definition at line 30 of file proc_system.c.