[Overview][Constants][Types][Procedures and functions][Variables][Index] Reference for unit 'Unix' (#rtl)

FpExecV

Execute process

Declaration

Source position: unix.pp line 82

function FpExecV(

  const PathName: RawByteString;

  args: ppchar

):cint;

Description

FpExecV replaces the currently running program with the program, specified in PathName. 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, FpExecV 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

FpExecve

  

Execute process using environment

FpExecvp

  

Execute process, search path

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

Example

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.

Documentation generated on: Jun 23 2021