int main(int argc, char *argv[]) {
uid_t uid = 0;
char *root_name;
root_name = userNameFromId(uid);
strcpy(root_name, "rot");
printf("root_name = %s\n", root_name);
root_name = userNameFromId(uid);
printf("root_name = %s\n", root_name);
exit(EXIT_SUCCESS);
}
int main(int argc,char *argv[])
{
uid_t u;
gid_t g;
char *uname;
char *gname;
struct passwd *pwd;
u = userIdFromName("root");
printf("uid=%ld,username=%s\n",u,"root");
uname = userNameFromId(u);
printf("username=%s,uid=%ld\n",uname,u);
pwd = getpwnam("root");
if (pwd == NULL)
{
errExit("getpwnam");
}
g = pwd->pw_gid;
gname = groupNameFromId(pwd->pw_gid);
printf("groupname=%s,gid=%ld\n",gname,g);
g = groupIdFromName(gname);
printf("gid=%ld,groupname=%s\n",g,gname);
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
int i;
struct sems *s = getSemaphores();
if (s == NULL) {
errExit("getSemaphores");
}
printf("key\t\tsemid\t\towner\t\tperms\t\tnsems\n");
for (i = 0; i < s->len; i++) {
printf(
"0x%08x\t%d\t\t%s\t\t%o\t\t%d\n",
s->info[i].key,
s->info[i].semid,
userNameFromId(s->info[i].uid),
s->info[i].perms,
s->info[i].nsems
);
}
free(s->info);
free(s);
exit(EXIT_SUCCESS);
}
int main(int argc,char *argv[])
{
acl_t acl;
acl_type_t type;
acl_entry_t entry;
acl_tag_t tag;
uid_t *uidp;
gid_t *gidp;
acl_permset_t permset;
char *name;
int entryId,permVal,opt;
type = ACL_TYPE_ACCESS;
while((opt = getopt(argc,argv,"d") != -1))
{
switch(opt)
{
case 'd': type = ACL_TYPE_DEFAULT;break;
case '?': usageError(argv[0]);
}
}
if (optind + 1 != argc)
{
usageError(argv[0]);
}
acl = acl_get_file(argv[optind],type);
if (acl == NULL)
{
errExit("acl_get_file");
}
/* Walk through each entry in this ACL */
for (entryId = ACL_FIRST_ENTRY; ; entryId = ACL_NEXT_ENTRY)
{
if (acl_get_entry(acl,entryId,&entry) != 1)
{
break; /* Exit on error or no more entries */
}
/* Retrieve and display tag type */
if (acl_get_tag_type(entry,&tag) == -1)
{
errExit("acl_get_tag_type");
}
printf("%-12s", (tag == ACL_USER_OBJ) ? "user_obj" :
(tag == ACL_USER) ? "user" :
(tag == ACL_GROUP_OBJ) ? "group_obj":
(tag == ACL_GROUP) ? "group":
(tag == ACL_MASK) ? "mask":
(tag == ACL_OTHER) ? "other":"???");
/* Retrieve and display otpional tag qualifier */
if (tag == ACL_USER)
{
uidp = acl_get_qualifier(entry);
if (uidp == NULL)
{
errExit("acl_get_qualifier");
}
name = userNameFromId(*uidp);
if (name == NULL)
{
printf("%-8d",*uidp);
}
else
{
printf("%-8s",name);
}
if (acl_free(uidp) == -1)
{
errExit("acl_free");
}
}else if (tag == ACL_GROUP)
{
gidp = acl_get_qualifier(entry);
if (gidp == NULL)
{
errExit("acl_get_qualifier");
}
name = groupNameFromId(*gidp);
if (name == NULL)
{
printf("%-12d",*gidp);
}
else
{
printf("%-12s",name);
}
if (acl_free(gidp) == -1)
{
errExit("acl_free");
}
}else
{
printf(" ");
}
/* Retrieve and display permissions */
if (acl_get_permset(entry,&permset) == -1)
{
errExit("acl_get_permset");
}
permVal = acl_get_perm(permset,ACL_READ);
if (permVal == -1)
{
errExit("acl_get_perm - ACL_READ");
}
printf("%c", (permVal == 1) ? 'r' : '-');
permVal = acl_get_perm(permset,ACL_WRITE);
if (permVal == -1)
{
errExit("acl_get_perm -ACL_WRITE");
}
printf("%c", (permVal == 1) ? 'w': '-');
permVal = acl_get_perm(permset,ACL_EXECUTE);
if (permVal == -1)
{
errExit("acl_get_perm - ACL_EXECUTE");
}
printf("%c", (permVal == 1) ? 'x' : '-');
printf("\n");
}
if (acl_free(acl) == -1)
{
errExit("acl_free");
}
exit(EXIT_SUCCESS);
}
