/*
* Call to get a page of memory at a location.
*/
vaddr_t mman_get_page(spdid_t spd, vaddr_t addr, int flags)
{
struct mem_cell *c;
struct mapping_info *m;
c = find_unused();
if (!c) {
printc("mm: no more available pages!\n");
goto err;
}
c->naliases++;
m = c->map;
m->owner_spd = spd;
m->addr = addr;
m->parent = -1;
/* Here we check for overwriting an already established mapping. */
if (cos_mmap_cntl(COS_MMAP_GRANT, 0, spd, addr, cell_index(c))) {
printc("mm: could not grant page @ %x to spd %d\n",
(unsigned int)addr, (unsigned int)spd);
m->owner_spd = m->addr = 0;
goto err;
}
return addr;
err:
return 0;
}
/*
* Call to get a page of memory at a location.
*/
vaddr_t mman_get_page(spdid_t spd, vaddr_t addr, int flags)
{
struct mem_cell *c;
c = find_unused();
if (!c) {
printc("mh: no more available pages!\n");
goto err;
}
c->map[0].owner_spd = spd;
c->map[0].addr = addr;
#ifdef ZERO_OUT
memset(c->local_addr, 0, 4096);
#endif
if (!parent_mman_alias_page(cos_spd_id(), (vaddr_t)c->local_addr, spd, addr)) {
printc("mh: could not grant page @ %x to spd %d\n",
(unsigned int)addr, (unsigned int)spd);
c->map[0].owner_spd = 0;
c->map[0].addr = 0;
goto err;
}
return addr;
err:
return 0;
}
alpm_list_t SYMEXPORT *alpm_pkg_unused_deltas(pmpkg_t *pkg)
{
off_t pkgsize = alpm_pkg_get_size(pkg);
alpm_list_t *unused = find_unused(
alpm_pkg_get_deltas(pkg),
alpm_pkg_get_filename(pkg),
pkgsize * MAX_DELTA_RATIO);
return unused;
}
int buffer_share_add_id(struct buffer_share *mix, unsigned int id, void *data)
{
struct id_offset *o;
o = find_id(mix, id);
if (o)
return -EEXIST;
o = find_unused(mix);
if (!o)
alloc_more_ids(mix);
o = find_unused(mix);
o->used = 1;
o->id = id;
o->offset = 0;
o->data = data;
return 0;
}
void main() {
char foo[64];
char uname[9],person[32],passwd[9],dir[32],shell[32],salt[3];
unsigned int group,uid;
int bad=0,i,correct=0;
time_t tm;
struct passwd *pw;
FILE *passwd_file; /* Yep, it's a file allright */
unused_uid = FIRST;
if (getuid()!=0) {
printf("You don't have access to add a new user.\n");
printf("Only root can add new users to the system.\n");
exit(1);
}
if ((bull=fopen("/etc/shadow","r"))!=NULL) found_shadow();
if ((bull=fopen("/etc/passwd","r"))==NULL) {
printf("Fatal error: password file not found.\n");
exit(1);
}
while (!correct) { /* loop until a "good" uname is chosen */
getlogin:
printf("\nLogin to add (^C to quit): ");
fflush(stdout);
gets(uname);
if (strlen(uname)>8) {
printf("The login name must be maximum 8 characters long.\n");
goto getlogin;
}
for (i=0;i<strlen(uname);i++) {
if (!(((uname[i]>='A') && (uname[i]<='Z')) ||
((uname[i]>='a') && (uname[i]<='z')) ||
((uname[i]>='0') && (uname[i]<='9')))) {
printf("Invalid character in login.\n");
goto getlogin;
}
}
if (nag=getpwnam(uname) != NULL) {
printf("Login in use. Choose another one.\n");
goto getlogin;
}
putchar('\n');
unused_uid = find_unused(++unused_uid);
printf("\nEditing information for new user [%s]:\n",uname);
printf("\nFull name: ");
fflush(stdout);
gets(person);
printf("GID [%d]: ",DEFAULT_GROUP);
fflush(stdout);
gets(foo);
group=atoi(foo);
if (group==0) group=DEFAULT_GROUP;
printf("UID [%d]: ",unused_uid);
fflush(stdout);
gets(foo);
uid=atoi(foo);
if (uid==0) uid=unused_uid;
if ((pw=getpwuid(uid))!=NULL) {
printf("\nWarning: UID [%d] already in use, this would conflict with\n",uid);
printf("who already owns this user ID. [%s]'s UID has been reset to\n",uname);
printf("the last unused UID: [%d].\n",unused_uid);
uid=unused_uid;
}
fflush(stdin);
printf("Home Directory [%s/%s]: ",DEFAULT_HOME,uname);
fflush(stdout);
gets(dir);
if (!strcmp(dir,"")) sprintf(dir,"%s/%s",DEFAULT_HOME,uname);
fflush(stdin);
printf("Shell [%s]: ",DEFAULT_SHELL);
fflush(stdout);
gets(shell);
if (!strcmp(shell,"")) sprintf(shell,"%s",DEFAULT_SHELL);
fflush(stdin);
printf("Password [%s]: ",uname);
fflush(stdout);
gets(passwd);
if (!strcmp(passwd,"")) sprintf(passwd,"%s",uname);
time(&tm);
salt[0]=(tm.t_time & 0x0f)+'A';
salt[1]=((tm.t_time & 0xf0) >> 4)+'a';
salt[2]=0;
printf("\nInformation for new user [%s]:\n",uname);
printf("Home directory: [%s]\nShell: [%s]\n",dir,shell);
printf("Password: [%s]\nUID: [%d]\nGID: [%d]\n",passwd,uid,group);
printf("\nIs this correct? [y/N]: ");
fflush(stdout);
fflush(stdin);
gets(foo);
bad=correct=(foo[0]=='y'||foo[0]=='Y');
if (bad!=1) printf("\nUser [%s] not added.\n",uname);
}
printf("\nAdding login [%s]...\n",uname);
strcpy(foo,PASSWD_FILE);
strcat(foo,".old");
if ((passwd_file=fopen(foo,"w")) == NULL) {
printf("Error creating password backup file.\n");
exit(1);
}
setpwent();
for (i=0;(pw=getpwent())!=NULL;++i) {
if (putpwent(pw,passwd_file)==-1) {
printf("Error writing password backup file.\n");
exit(1);
}
}
endpwent();
fclose(passwd_file);
if (i<1) printf("Can't backup password file.\n");
passwd_file=fopen(PASSWD_FILE,"a");
fprintf(passwd_file,"%s:%s:%d:%d:%s:%s:%s\n"
,uname,crypt(passwd,salt),uid,group,person,dir,shell);
fflush(passwd_file);
fclose(passwd_file);
printf("Making directory [%s]...\n",dir);
mkdir(dir,DEFAULT_PERMS);
chown(dir,uid,group);
printf("Done.\n");
}
