setenv problems

[Pawel Veselov]

Hi,

[ skipped ]

>> http://www.opengroup.org/onlinepubs/000095399/functions/setenv.html
>> says that setenv() should fail with EINVAL if name contains an equal
>> sign.
> Ok, also considering the linux man pages state the same and the function
> isn't specified by ANSI.  Would you like to try your hand at a patch?

[ skipped ]

Here is the patch, attached. Let me know if there are any questions/comments.
Tested with this:

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

static char * _getenv(char *);

char * _getenv(char * var) {
    char * aux = getenv(var);
    if (aux) { return aux; }
    return "(NULL)";
}

int main(int argc, char ** argv) {
    printf("getenv('nada' = %s\n", getenv("nada"));
    printf("getenv('TMP') = %s\n", getenv("TMP"));
    printf("getenv('TMP=XA') = %s\n", getenv("TMP=XA"));
    printf("setenv('PAWEL','DATA') = %d\n", setenv("PAWEL", "DATA", 1));
    printf("getenv('PAWEL') = %s\n", getenv("PAWEL"));
    errno = 0;
    printf("setenv('PAWE=L', 'DATA') = %d\n", setenv("PAWE=L", "DATA", 1));
    fflush(stdout);
    perror("setenv()");
    printf("setenv('LOOK','=FEEL') = %d\n", setenv("LOOK", "=FEEL", 1));
    printf("unsetenv('PAWEL') = %d\n", unsetenv("PAWEL"));
    printf("getenv('LOOK') = %s\n", getenv("LOOK"));
    printf("getenv('PAWEL') = %s\n", getenv("PAWEL"));
    printf("setenv('LOOK', 'JAM', nod) = %d\n", setenv("LOOK", "JAM", 0));
    printf("getenv('LOOK') = %s\n", getenv("LOOK"));
    printf("setenv('LOOK', 'MONKEY', od) = %d\n", setenv("LOOK", "MONKEY", 1));
    printf("getenv('LOOK') = %s\n", getenv("LOOK"));

    errno = 0;
    printf("unsetenv('=') = %d\n", unsetenv("="));
    perror("unsetenv()");

    errno = 0;
    printf("unsetenv('KARA') = %d\n", unsetenv("KARA"));
    perror("unsetenv()");
    return 0;
}


-- 
With best of best regards
Pawel S. Veselov
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