Unit 'Unix'	Package
[Overview][Constants][Types][Procedures and functions][Index]	[#rtl]

FpExecVP

Execute process, search path.

Declaration

Source position: unix.pp line 128

function FpExecVP(

const PathName: RawByteString;

args: PPAnsiChar

):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 current environment 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).

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.

FpExecve		Execute process using environment.
FpExecv		Execute process.
FpExecle		Execute process (using argument list, environment).
FpExecl		Execute process (using argument list, environment).
FpExeclp		Execute process (using argument list, environment; search path).
FpFork		Create child process.

FpExecVP

Declaration

Description

Errors

See also

Example