FpExecVPE

Execute process, search path using environment

Declaration

Source position: unix.pp line 114

  function FpExecVPE(const PathName: RawByteString; args: ppchar; 
                    env: ppchar) : cint;

Description

FpExecVP replaces the currently running program with the program, specified in PathName. The executable in path is searched in the path, if it isn't an absolute filename. It gives the program the options in args. This is a pointer to an array of pointers to null-terminated strings. The last pointer in this array should be nil. The environment in Env is passed to the program. On success, execvp does not return.

Errors

Extended error information is returned by the FpGetErrno function:

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

Example

Program Example79;
{ Program to demonstrate the FpExecVP function. }
Uses Unix, strings;
Const Arg0 : PChar = 'ls';
      Arg1 : Pchar = '-l';
Var PP : PPchar;
begin
  GetMem (PP,3*SizeOf(Pchar));
  PP[0]:=Arg0;
  PP[1]:=Arg1;
  PP[2]:=Nil;
  { Execute 'ls -l', with current environment. }
  { 'ls' is looked for in PATH environment variable.}
  fpExecvp ('ls',pp);
end.