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/* test22: umask() (p) Jan-Mark Wams. email: jms@cs.vu.nl */
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <stdio.h>
#include "common.h"
#define ITERATIONS 2
#define System(cmd) if (system(cmd) != 0) printf("``%s'' failed\n", cmd)
#define Chdir(dir) if (chdir(dir) != 0) printf("Can't goto %s\n", dir)
#define Stat(a,b) if (stat(a,b) != 0) printf("Can't stat %s\n", a)
void test22a(void);
int mode(char *filename);
int umode(char *filename);
void quit(void);
int main(int argc, char *argv[])
{
int i, m = 0xFFFF;
sync();
if (argc == 2) m = atoi(argv[1]);
start(22);
for (i = 0; i < ITERATIONS; i++) {
if (m & 0001) test22a();
}
quit();
return (-1); /* Unreachable */
}
void test22a()
{
int fd1, fd2;
int i, oldmask;
int stat_loc; /* For the wait sys call. */
subtest = 1;
system("chmod 777 ../DIR_22/* ../DIR_22/*/* > /dev/null 2>&1");
System("rm -rf ../DIR_22/*");
oldmask = 0123; /* Set oldmask and umask. */
umask(oldmask); /* Set oldmask and umask. */
/* Check all the possible values of umask. */
for (i = 0000; i <= 0777; i++) {
if (oldmask != umask(i)) e(1); /* set umask() */
fd1 = open("open", O_CREAT, 0777);
if (fd1 != 3) e(2); /* test open(), */
fd2 = creat("creat", 0777);
if (fd2 != 4) e(3); /* creat(), */
if (mkdir("dir", 0777) != 0) e(4); /* mkdir(), */
if (mkfifo("fifo", 0777) != 0) e(5); /* and mkfifo(). */
if (umode("open") != i) e(6); /* see if they have */
if (umode("creat") != i) e(7); /* the proper mode */
if (umode("dir") != i) e(8);
if (umode("fifo") != i) e(9);
/* Clean up */
if (close(fd1) != 0) e(10);
if (close(fd2) != 0) e(11); /* close fd's and */
unlink("open"); /* clean the dir */
unlink("creat");
rmdir("dir");
unlink("fifo");
oldmask = i; /* save current mask */
}
/* Check-reset mask */
if (umask(0124) != 0777) e(12);
/* Check if a umask of 0000 leaves the modes alone. */
if (umask(0000) != 0124) e(13);
for (i = 0000; i <= 0777; i++) {
fd1 = open("open", O_CREAT, i);
if (fd1 != 3) e(14); /* test open(), */
fd2 = creat("creat", i);
if (fd2 != 4) e(15); /* creat(), */
if (mkdir("dir", i) != 0) e(16); /* mkdir(), */
if (mkfifo("fifo", i) != 0) e(17); /* and mkfifo(). */
if (mode("open") != i) e(18); /* see if they have */
if (mode("creat") != i) e(19); /* the proper mode */
if (mode("dir") != i) e(20);
if (mode("fifo") != i) e(21);
/* Clean up */
if (close(fd1) != 0) e(22);
if (close(fd2) != 0) e(23);
if (unlink("open") != 0) e(24);
unlink("creat");
rmdir("dir");
unlink("fifo");
}
/* Check if umask survives a fork() */
if (umask(0124) != 0000) e(25);
switch (fork()) {
case -1: fprintf(stderr, "Can't fork\n"); break;
case 0:
mkdir("bar", 0777); /* child makes a dir */
exit(0);
default:
if (wait(&stat_loc) == -1) e(26);
}
if (umode("bar") != 0124) e(27);
rmdir("bar");
/* Check if umask in child changes umask in parent. */
switch (fork()) {
case -1: fprintf(stderr, "Can't fork\n"); break;
case 0:
switch (fork()) {
case -1:
fprintf(stderr, "Can't fork\n");
break;
case 0:
if (umask(0432) != 0124) e(28);
exit(0);
default:
if (wait(&stat_loc) == -1) e(29);
}
if (umask(0423) != 0124) e(30);
exit(0);
default:
if (wait(&stat_loc) == -1) e(31);
}
if (umask(0342) != 0124) e(32);
/* See if extra bits are ignored */
if (umask(0xFFFF) != 0342) e(33);
if (umask(0xFE00) != 0777) e(34);
if (umask(01777) != 0000) e(35);
if (umask(0022) != 0777) e(36);
}
int mode(arg)
char *arg;
{ /* return the file mode. */
struct stat st;
Stat(arg, &st);
return st.st_mode & 0777;
}
int umode(arg)
char *arg;
{ /* return the umask used for this file */
return 0777 ^ mode(arg);
}
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