Koleksi Kode Sumber (17) : MINIX (5) – Perintah chmod

[sourcecode languange=”cpp”]

/*
* chmod [mode] files
*  change mode of files
*
*  by Patrick van Kleef
*/

[/sourcecode]

[sourcecode languange=”cpp”]

main (argc, argv)
int   argc;
char *argv[];
{
int i;
int status = 0;
int newmode;

if (argc < 3) {
Usage ();
}

newmode = oatoi (argv[1]);

for (i = 2; i < argc; i++) {
if (access (argv[i], 0)) {
prints ("chmod: can’t access %s\n", argv[i]);
status++;
}
else
if (chmod (argv[i], newmode) < 0) {
prints ("chmod: can’t change %s\n", argv[i]);
status++;
}
}
exit (status);
}

oatoi (arg)
char   *arg;
{
register    c,
i;

i = 0;
while ((c = *arg++) >= ‘0’ && c <= ‘7’)
i = (i << 3) + (c – ‘0’);
if (c != ‘\0’)
Usage ();
return (i);
}

Usage () {
prints ("Usage: chmod [mode] file …\n");
exit (255);
}
[/sourcecode]