Thread: spawnl and char *

> spawnl wont execute a char *.
C'mon - details please

Error messages, status results, effects (or lack of)

there is no error message from either the compiler or linker. no warning message either. it is as if this line of code simply wasnt there.

> there is no error message from either the compiler or linker. no warning message either
And what about the int status result from spawn at run-time?

Is this also correct?

do you mean what spwanl returns after execution?? if so i haven't checked it. i was just wondering why it wont take a variable char *(as in char *pTr) as an argument.

i figured out that spawnl, when using variable for the path, cant seem to locate the child. should i maybe be using a different member of the spawn family??

Are you entirely sure that you haven't missed a \ for example?

This works just fine here, using DJGPP

Code:

#include <stdio.h> 
#include <process.h>

void p1 ( void ) {
    int res = spawnl( P_WAIT,
        "c:\\winnt\\system32\\ping.exe",
        "c:\\winnt\\system32\\ping.exe",
        "127.0.0.1", NULL );
    printf( "Res=%d\n", res );
}
void p2 ( void ) {
    char *cmd = "c:\\winnt\\system32\\ping.exe";
    char *par = "127.0.0.1";
    int res = spawnl( P_WAIT, cmd, cmd, par, NULL );
    printf( "Res=%d\n", res );
}

int main ( ) {
    p1();
    p2();
    return 0;
}

this is what i am trying to do in a nut shell:

FILE *fp;
char *path;

system("dir c:\\/s/b | grep -ir \\myprog.exe > fp.dat")\\this

\\searches for myprog.exe and puts the path into fp.dat

(nonimportant code that fixes the path to c:\\etc)

path=(char *)malloc(MAXPATH*sizeof(char));
fp=fopen("path.dat","r");
fgets(path,MAXPATH,fp);
spawnl(P_WAIT,path,path,NULL);

> fgets(path,MAXPATH,fp);
You need to remove the \n from the end of the line, before passing it to spawnl

Otherwise, you're trying to run "prog.exe\n", not "prog.exe"

THANK YOU!!! that damn problem has been killing me.
THANX