FpExecv function

Declaration

function FpExecv(path: PAnsiChar; argv: PPAnsiChar): cint

Description

Replaces the currently running program with the program, specified in path. It gives the program the options in argvp. This is a pointer to an array of pointers to null-terminated strings. The last pointer in this array should be nil. The current environment is passed to the program. On success, execv does not return.

Errors

On error, -1 is returned. Extended error information can be retrieved with fpGetErrNo

sys_eacces

File is not a regular file, or has no execute permission. A component of the path has no search permission.

sys_eperm

The file system is mounted noexec .

sys_e2big

Argument list too big.

sys_enoexec

The magic number in the file is incorrect.

sys_enoent

The file does not exist.

sys_enomem

Not enough memory for kernel.

sys_enotdir

A component of the path is not a directory.

sys_eloop

The path contains a circular reference (via symlinks).

See also

• fpExecve
• fpFork

Example: ex8

Program Example8;

{ Program to demonstrate the Execv function. }

Uses Unix, strings;

Const Arg0 : PChar = '/bin/ls';
      Arg1 : Pchar = '-l';

Var PP : PPchar;


begin
  GetMem (PP,3*SizeOf(Pchar));
  PP[0]:=Arg0;
  PP[1]:=Arg1;
  PP[3]:=Nil;
  { Execute '/bin/ls -l', with current environment }
  fpExecv ('/bin/ls',pp);
end.