int do_device(int nargs, char **args) {
int len;
char tmp[64];
char *source = args[1];
int prefix = 0;
if (nargs != 5)
return -1;
/* Check for wildcard '*' at the end which indicates a prefix. */
len = strlen(args[1]) - 1;
if (args[1][len] == '*') {
args[1][len] = '\0';
prefix = 1;
}
/* If path starts with mtd@ lookup the mount number. */
if (!strncmp(source, "mtd@", 4)) {
int n = mtd_name_to_number(source + 4);
if (n >= 0) {
snprintf(tmp, sizeof(tmp), "/dev/mtd/mtd%d", n);
source = tmp;
}
}
add_devperms_partners(source, get_mode(args[2]), decode_uid(args[3]),
decode_uid(args[4]), prefix);
return 0;
}
int do_chown(int nargs, char **args) {
char tmp[64];
char *target;
int n;
switch (nargs){
case 3:
target = args[2];
break;
case 4:
target = args[3];
break;
default:
ERROR("invalid args num: %d, It should be 3 or 4\n", nargs);
return -1;
}
if (!strncmp(target, "mtd@", 4)) {
n = mtd_name_to_number(target + 4);
if (n < 0) {
return -1;
}
sprintf(tmp, "/dev/mtd/mtd%d", n);
target = tmp;
}
//ERROR("do_chown debug: target:%s\n",target);
/* GID is optional. */
if (nargs == 3) {
if (chown(target, decode_uid(args[1]), -1) < 0)
return -errno;
} else if (nargs == 4) {
if (chown(target, decode_uid(args[1]), decode_uid(args[2])))
return -errno;
} else {
return -1;
}
return 0;
}
int do_ubiattach(int nargs, char **args)
{
char *source = args[1];
int mtd_num, ubi_num = -1;
if (nargs >= 3) {
ubi_num = strtol(args[2], 0, 0);
}
if (!strncmp(source, "mtd@", 4)) {
mtd_num = mtd_name_to_number(source + 4);
if (mtd_num < 0) {
return -1;
}
} else {
mtd_num = strtoul(source, 0, 0);
}
if (ubi_attach("/dev/ubi_ctrl", mtd_num, ubi_num)) {
return -1;
}
return 0;
}
int do_chmod(int nargs, char **args) {
char tmp[64];
char *target;
int n;
target = args[2];
if (!strncmp(target, "mtd@", 4)) {
n = mtd_name_to_number(target + 4);
if (n < 0) {
return -1;
}
sprintf(tmp, "/dev/mtd/mtd%d", n);
target = tmp;
}
//ERROR("do_chmod debug: target:%s\n",target);
mode_t mode = get_mode(args[1]);
if (chmod(target, mode) < 0) {
return -errno;
}
return 0;
}
/* mount <type> <device> <path> <flags ...> <options> */
int do_mount(int nargs, char **args)
{
char tmp[64];
char *source, *target, *system;
char *options = NULL;
unsigned flags = 0;
int n, i;
int wait = 0;
for (n = 4; n < nargs; n++) {
for (i = 0; mount_flags[i].name; i++) {
if (!strcmp(args[n], mount_flags[i].name)) {
flags |= mount_flags[i].flag;
break;
}
}
if (!mount_flags[i].name) {
if (!strcmp(args[n], "wait"))
wait = 1;
/* if our last argument isn't a flag, wolf it up as an option string */
else if (n + 1 == nargs)
options = args[n];
}
}
system = args[1];
source = args[2];
target = args[3];
if (!strncmp(source, "mtd@", 4)) {
n = mtd_name_to_number(source + 4);
if (n < 0) {
return -1;
}
sprintf(tmp, "/dev/block/mtdblock%d", n);
if (wait)
wait_for_file(tmp, COMMAND_RETRY_TIMEOUT);
if (mount(tmp, target, system, flags, options) < 0) {
return -1;
}
goto exit_success;
} else if (!strncmp(source, "loop@", 5)) {
int mode, loop, fd;
struct loop_info info;
mode = (flags & MS_RDONLY) ? O_RDONLY : O_RDWR;
fd = open(source + 5, mode);
if (fd < 0) {
return -1;
}
for (n = 0; ; n++) {
sprintf(tmp, "/dev/block/loop%d", n);
loop = open(tmp, mode);
if (loop < 0) {
return -1;
}
/* if it is a blank loop device */
if (ioctl(loop, LOOP_GET_STATUS, &info) < 0 && errno == ENXIO) {
/* if it becomes our loop device */
if (ioctl(loop, LOOP_SET_FD, fd) >= 0) {
close(fd);
if (mount(tmp, target, system, flags, options) < 0) {
ioctl(loop, LOOP_CLR_FD, 0);
close(loop);
return -1;
}
close(loop);
goto exit_success;
}
}
close(loop);
}
close(fd);
ERROR("out of loopback devices");
return -1;
} else {
if (wait)
wait_for_file(source, COMMAND_RETRY_TIMEOUT);
if (mount(source, target, system, flags, options) < 0) {
/* If this fails, it may be an encrypted filesystem
* or it could just be wiped. If wiped, that will be
* handled later in the boot process.
* We only support encrypting /data. Check
* if we're trying to mount it, and if so,
* assume it's encrypted, mount a tmpfs instead.
* Then save the orig mount parms in properties
* for vold to query when it mounts the real
* encrypted /data.
*/
if (!strcmp(target, DATA_MNT_POINT) && !partition_wiped(source)) {
const char *tmpfs_options;
tmpfs_options = property_get("ro.crypto.tmpfs_options");
if (mount("tmpfs", target, "tmpfs", MS_NOATIME | MS_NOSUID | MS_NODEV,
tmpfs_options) < 0) {
return -1;
}
/* Set the property that triggers the framework to do a minimal
* startup and ask the user for a password
*/
property_set("ro.crypto.state", "encrypted");
property_set("vold.decrypt", "1");
} else {
return -1;
}
}
if (!strcmp(target, DATA_MNT_POINT)) {
char fs_flags[32];
/* Save the original mount options */
property_set("ro.crypto.fs_type", system);
property_set("ro.crypto.fs_real_blkdev", source);
property_set("ro.crypto.fs_mnt_point", target);
if (options) {
property_set("ro.crypto.fs_options", options);
}
snprintf(fs_flags, sizeof(fs_flags), "0x%8.8x", flags);
property_set("ro.crypto.fs_flags", fs_flags);
}
}
exit_success:
/* If not running encrypted, then set the property saying we are
* unencrypted, and also trigger the action for a nonencrypted system.
*/
if (!strcmp(target, DATA_MNT_POINT)) {
const char *prop;
prop = property_get("ro.crypto.state");
if (! prop) {
prop = "notset";
}
if (strcmp(prop, "encrypted")) {
property_set("ro.crypto.state", "unencrypted");
action_for_each_trigger("nonencrypted", action_add_queue_tail);
}
}
return 0;
}
/* mount <type> <device> <path> <flags ...> <options> */
int do_mount(int nargs, char **args)
{
char tmp[64];
char *source, *target, *system;
char *options = NULL;
unsigned flags = 0;
int n, i;
int wait = 0;
for (n = 4; n < nargs; n++) {
for (i = 0; mount_flags[i].name; i++) {
if (!strcmp(args[n], mount_flags[i].name)) {
flags |= mount_flags[i].flag;
break;
}
}
if (!mount_flags[i].name) {
if (!strcmp(args[n], "wait"))
wait = 1;
/* if our last argument isn't a flag, wolf it up as an option string */
else if (n + 1 == nargs)
options = args[n];
}
}
system = args[1];
source = args[2];
target = args[3];
if (!strncmp(source, "mtd@", 4)) {
n = mtd_name_to_number(source + 4);
if (n < 0) {
return -1;
}
sprintf(tmp, "/dev/block/mtdblock%d", n);
if (wait)
wait_for_file(tmp, COMMAND_RETRY_TIMEOUT);
if (mount(tmp, target, system, flags, options) < 0) {
return -1;
}
goto exit_success;
} else if (!strncmp(source, "loop@", 5)) {
int mode, loop, fd;
struct loop_info info;
mode = (flags & MS_RDONLY) ? O_RDONLY : O_RDWR;
fd = open(source + 5, mode);
if (fd < 0) {
return -1;
}
for (n = 0; ; n++) {
sprintf(tmp, "/dev/block/loop%d", n);
loop = open(tmp, mode);
if (loop < 0) {
return -1;
}
/* if it is a blank loop device */
if (ioctl(loop, LOOP_GET_STATUS, &info) < 0 && errno == ENXIO) {
/* if it becomes our loop device */
if (ioctl(loop, LOOP_SET_FD, fd) >= 0) {
close(fd);
if (mount(tmp, target, system, flags, options) < 0) {
ioctl(loop, LOOP_CLR_FD, 0);
close(loop);
return -1;
}
close(loop);
goto exit_success;
}
}
close(loop);
}
close(fd);
ERROR("out of loopback devices");
return -1;
} else {
if (wait)
wait_for_file(source, COMMAND_RETRY_TIMEOUT);
if (mount(source, target, system, flags, options) < 0) {
return -1;
}
}
exit_success:
return 0;
}
void set_device_permission(int nargs, char **args)
{
char *name;
char *attr = 0;
mode_t perm;
uid_t uid;
gid_t gid;
int prefix = 0;
char *endptr;
int ret;
char *tmp = 0;
if (nargs == 0)
return;
if (args[0][0] == '#')
return;
name = args[0];
if (!strncmp(name,"/sys/", 5) && (nargs == 5)) {
INFO("/sys/ rule %s %s\n",args[0],args[1]);
attr = args[1];
args++;
nargs--;
}
if (nargs != 4) {
ERROR("invalid line ueventd.rc line for '%s'\n", args[0]);
return;
}
/* If path starts with mtd@ lookup the mount number. */
if (!strncmp(name, "mtd@", 4)) {
int n = mtd_name_to_number(name + 4);
if (n >= 0)
asprintf(&tmp, "/dev/mtd/mtd%d", n);
name = tmp;
} else if (!strncmp(name, "inand@", 6)) {
int n = mtd_name_to_number(name + 6);
if (n >= 0)
asprintf(&tmp, "/dev/block/cardblkinand%d", n);
name = tmp;
} else{
int len = strlen(name);
if (name[len - 1] == '*') {
prefix = 1;
name[len - 1] = '\0';
}
}
perm = strtol(args[1], &endptr, 8);
if (!endptr || *endptr != '\0') {
ERROR("invalid mode '%s'\n", args[1]);
free(tmp);
return;
}
ret = get_android_id(args[2]);
if (ret < 0) {
ERROR("invalid uid '%s'\n", args[2]);
free(tmp);
return;
}
uid = ret;
ret = get_android_id(args[3]);
if (ret < 0) {
ERROR("invalid gid '%s'\n", args[3]);
free(tmp);
return;
}
gid = ret;
add_dev_perms(name, attr, perm, uid, gid, prefix);
free(tmp);
}
static int ubi_attach_mtd(const char *name)
{
int ret;
int mtd_num, ubi_num, vid_off;
int ubi_ctrl, ubi_dev;
int vols, avail_lebs, leb_size;
char path[128];
struct ubi_attach_req attach_req;
struct ubi_mkvol_req mkvol_req;
mtd_num = mtd_name_to_number(name);
if (mtd_num == -1) {
return -1;
}
for (ubi_num = 0; ubi_num < 4; ubi_num++)
{
sprintf(path, "/sys/class/ubi/ubi%d/mtd_num", ubi_num);
ubi_dev = open(path, O_RDONLY);
if (ubi_dev != -1)
{
ret = read(ubi_dev, path, sizeof(path));
close(ubi_dev);
if (ret > 0 && mtd_num == atoi(path))
return ubi_num;
}
}
ubi_ctrl = open(UBI_CTRL_DEV, O_RDONLY);
if (ubi_ctrl == -1) {
return -1;
}
memset(&attach_req, 0, sizeof(struct ubi_attach_req));
attach_req.ubi_num = UBI_DEV_NUM_AUTO;
attach_req.mtd_num = mtd_num;
attach_req.vid_hdr_offset = UBI_VID_OFFSET_AUTO;
ret = ioctl(ubi_ctrl, UBI_IOCATT, &attach_req);
if (ret == -1) {
close(ubi_ctrl);
return -1;
}
ubi_num = attach_req.ubi_num;
vid_off = attach_req.vid_hdr_offset;
vols = ubi_dev_read_int(ubi_num, "volumes_count", -1);
if (vols == 0) {
sprintf(path, "/dev/ubi%d", ubi_num);
ret = wait_for_file(path, 50);
ubi_dev = open(path, O_RDONLY);
if (ubi_dev == -1) {
close(ubi_ctrl);
return ubi_num;
}
avail_lebs = ubi_dev_read_int(ubi_num, "avail_eraseblocks", 0);
leb_size = ubi_dev_read_int(ubi_num, "eraseblock_size", 0);
memset(&mkvol_req, 0, sizeof(struct ubi_mkvol_req));
mkvol_req.vol_id = UBI_VOL_NUM_AUTO;
mkvol_req.alignment = 1;
mkvol_req.bytes = (long long)avail_lebs * leb_size;
mkvol_req.vol_type = UBI_DYNAMIC_VOLUME;
ret = snprintf(mkvol_req.name, UBI_MAX_VOLUME_NAME + 1, "%s", name);
mkvol_req.name_len = ret;
ioctl(ubi_dev, UBI_IOCMKVOL, &mkvol_req);
close(ubi_dev);
}
close(ubi_ctrl);
return ubi_num;
}
/* do_mount_ubifs <vol_name> <device> <path> <flags ...> <options> */
int do_attach_ubifs(int nargs, char **args)
{
char tmp[64];
char *target,*vol_name,*source;
char *options = NULL;
unsigned flags = 0;
int n, i;
static int ubi_dev_num = 1;
int ret;
int ubi_number = 0;
for (n = 4; n < nargs; n++) {
for (i = 0; mount_flags[i].name; i++) {
if (!strcmp(args[n], mount_flags[i].name)) {
flags |= mount_flags[i].flag;
break;
}
}
/* if our last argument isn't a flag, wolf it up as an option string */
if (n + 1 == nargs && !mount_flags[i].name)
options = args[n];
}
vol_name = args[1];
source = args[2];
target = args[3];
if (!strncmp(source, "mtd@", 4)) {
n = mtd_name_to_number(source + 4);
if (n < 0) {
return -1;
}
if (MS_REMOUNT == (flags & MS_REMOUNT))
{
for (i=0;i < MAX_MTD_PARTITIONS;i++)
{
if (n == mtd_part_map[i].number)
{
ubi_number = mtd_part_map[i].ubi_number;
break;
}
}
sprintf (tmp,"ubi%d:%s",ubi_number,vol_name);
}
else
{
ret = ubi_attach_mtd ("/dev/ubi_ctrl",ubi_dev_num,n);
if (0 != ret){
return -1;
}
for (i=0;i < MAX_MTD_PARTITIONS;i++)
{
if (n == mtd_part_map[i].number)
{
mtd_part_map[i].ubi_number = ubi_dev_num;
break;
}
}
sprintf (tmp,"ubi%d:%s",ubi_dev_num++,vol_name);
}
// if (mount(tmp, target, "ubifs", flags, options) < 0) {
// return -1;
// }
}
else {
// if (mount(source, target, "ubifs", flags, options) < 0) {
// return -1;
// }
}
return 0;
}
/* mount <type> <device> <path> <flags ...> <options> */
int do_mount(int nargs, char **args)
{
char tmp[64];
char *source, *target, *type;
char *options = NULL;
unsigned flags = 0;
int n, i;
int wait = 0;
//add for power loss test
struct stat stbuf;
for (n = 4; n < nargs; n++) {
for (i = 0; mount_flags[i].name; i++) {
if (!strcmp(args[n], mount_flags[i].name)) {
flags |= mount_flags[i].flag;
break;
}
}
if (!mount_flags[i].name) {
if (!strcmp(args[n], "wait"))
wait = 1;
/* if our last argument isn't a flag, wolf it up as an option string */
else if (n + 1 == nargs)
options = args[n];
}
}
type = args[1];
source = args[2];
target = args[3];
if (!strncmp(source, "mtd@", 4)) {
n = mtd_name_to_number(source + 4);
if (n < 0) {
return -1;
}
sprintf(tmp, "/dev/block/mtdblock%d", n);
if (wait)
wait_for_file(tmp, COMMAND_RETRY_TIMEOUT);
if (mount(tmp, target, type, flags, options) < 0) {
return -1;
}
goto exit_success;
} else if (!strncmp(source, "loop@", 5)) {
int mode, loop, fd;
struct loop_info info;
mode = (flags & MS_RDONLY) ? O_RDONLY : O_RDWR;
fd = open(source + 5, mode);
if (fd < 0) {
return -1;
}
for (n = 0; ; n++) {
sprintf(tmp, "/dev/block/loop%d", n);
loop = open(tmp, mode);
if (loop < 0) {
return -1;
}
/* if it is a blank loop device */
if (ioctl(loop, LOOP_GET_STATUS, &info) < 0 && errno == ENXIO) {
/* if it becomes our loop device */
if (ioctl(loop, LOOP_SET_FD, fd) >= 0) {
close(fd);
if (mount(tmp, target, type, flags, options) < 0) {
ioctl(loop, LOOP_CLR_FD, 0);
close(loop);
return -1;
}
close(loop);
goto exit_success;
}
}
close(loop);
}
close(fd);
ERROR("out of loopback devices");
return -1;
} else {
#ifdef MTK_EMMC_SUPPORT
struct phone_encrypt_state ps;
if (!strcmp(target, DATA_MNT_POINT)) {
if (misc_get_phone_encrypt_state(&ps) < 0) {
printf("Failed to get encrypted status in MISC\n");
}
else {
printf("Success: get encrypted status: 0x%x in MISC\n", ps.state);
}
}
#endif
if (wait)
wait_for_file(source, COMMAND_RETRY_TIMEOUT);
if (mount(source, target, type, flags, options) < 0) {
/* If this fails, it may be an encrypted filesystem
* or it could just be wiped. If wiped, that will be
* handled later in the boot process.
* We only support encrypting /data. Check
* if we're trying to mount it, and if so,
* assume it's encrypted, mount a tmpfs instead.
* Then save the orig mount parms in properties
* for vold to query when it mounts the real
* encrypted /data.
*/
if (!strcmp(target, DATA_MNT_POINT)) {
int fd;
if ((fd = open(source, O_RDONLY)) < 0) {
printf("Mount /data fail because source(%s) doesn't exist.", source);
return -1;
}
}
if (!strcmp(target, DATA_MNT_POINT) && !partition_wiped(source)) {
const char *tmpfs_options;
tmpfs_options = property_get("ro.crypto.tmpfs_options");
if (mount("tmpfs", target, "tmpfs", MS_NOATIME | MS_NOSUID | MS_NODEV,
tmpfs_options) < 0) {
return -1;
}
/* Set the property that triggers the framework to do a minimal
* startup and ask the user for a password
*/
property_set("ro.crypto.state", "encrypted");
property_set("vold.decrypt", "1");
} else {
return -1;
}
}
#ifdef MTK_EMMC_SUPPORT
else {
if (!strcmp(target, DATA_MNT_POINT)) {
if (ps.state == PHONE_ENCRYPTED) {
ps.state = PHONE_UNCRYPTED;
if (misc_set_phone_encrypt_state(&ps) < 0) {
printf("Failed to set encrypted status to 0x%x in MISC\n", ps.state);
}
else {
printf("Success: Set encrypted status to 0x%x in MISC\n", ps.state);
}
}
}
}
#endif
if (!strcmp(target, DATA_MNT_POINT)) {
char fs_flags[32];
/* Save the original mount options */
property_set("ro.crypto.fs_type", type);
property_set("ro.crypto.fs_real_blkdev", source);
property_set("ro.crypto.fs_mnt_point", target);
if (options) {
property_set("ro.crypto.fs_options", options);
}
snprintf(fs_flags, sizeof(fs_flags), "0x%8.8x", flags);
property_set("ro.crypto.fs_flags", fs_flags);
}
if (!strncmp(type, "ext4", 4)){
if (!strncmp(target, "/data", 5)){
printf("delete lost-found in data dir\n");
system("/system/bin/rm -r /data/lost+found/*");
if (stat("/data/data", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/data file\n");
system("/system/bin/rm -r /data/data");
}
if (stat("/data/system", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/system file\n");
system("/system/bin/rm -r /data/system");
}
if (stat("/data/misc", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/misc file\n");
system("/system/bin/rm -r /data/misc");
}
if (stat("/data/local", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/local file\n");
system("/system/bin/rm -r /data/local");
}
if (stat("/data/app-private", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/app-private file\n");
system("/system/bin/rm -r /data/app-private");
}
if (stat("/data/dalvik-cache", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/dalvik-cache file\n");
system("/system/bin/rm -r /data/dalvik-cache");
}
if (stat("/data/property", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/property file\n");
system("/system/bin/rm -r /data/property");
}
if (stat("/data/mvg_root", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/mvg_root file\n");
system("/system/bin/rm -r /data/mvg_root");
}
if (stat("/data/anr", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/anr file\n");
system("/system/bin/rm -r /data/anr");
}
if (stat("/data/app", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/app file\n");
system("/system/bin/rm -r /data/app");
}
if (stat("/data/nvram", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/nvram file\n");
system("/system/bin/rm -r /data/nvram");
}
if (stat("/data/secure", &stbuf) < 0){
printf("stat syscall fail\n");
}
if (S_ISREG(stbuf.st_mode)){
printf("delete /data/secure file\n");
system("/system/bin/rm -r /data/secure");
}
}
if (!strncmp(target, "/cache", 6)){
printf("delete lost-found in cache dir\n");
system("/system/bin/rm -r /cache/lost+found/*");
}
}
}
exit_success:
/* If not running encrypted, then set the property saying we are
* unencrypted, and also trigger the action for a nonencrypted system.
*/
if (!strcmp(target, DATA_MNT_POINT)) {
const char *prop;
prop = property_get("ro.crypto.state");
if (! prop) {
prop = "notset";
}
if (strcmp(prop, "encrypted")) {
property_set("ro.crypto.state", "unencrypted");
action_for_each_trigger("nonencrypted", action_add_queue_tail);
}
}
return 0;
}
void set_device_permission(int nargs, char **args)
{
char *name;
char *attr = 0;
mode_t perm;
uid_t uid;
gid_t gid;
int prefix = 0;
int wildcard = 0;
char *endptr;
char *tmp = 0;
if (nargs == 0)
return;
if (args[0][0] == '#')
return;
name = args[0];
if (!strncmp(name,"/sys/", 5) && (nargs == 5)) {
INFO("/sys/ rule %s %s\n",args[0],args[1]);
attr = args[1];
args++;
nargs--;
}
if (nargs != 4) {
ERROR("invalid line ueventd.rc line for '%s'\n", args[0]);
return;
}
/* If path starts with mtd@ lookup the mount number. */
if (!strncmp(name, "mtd@", 4)) {
int n = mtd_name_to_number(name + 4);
if (n >= 0)
asprintf(&tmp, "/dev/mtd/mtd%d", n);
name = tmp;
} else {
int len = strlen(name);
char *wildcard_chr = strchr(name, '*');
if ((name[len - 1] == '*') &&
(wildcard_chr == (name + len - 1))) {
prefix = 1;
name[len - 1] = '\0';
} else if (wildcard_chr) {
wildcard = 1;
}
}
perm = strtol(args[1], &endptr, 8);
if (!endptr || *endptr != '\0') {
ERROR("invalid mode '%s'\n", args[1]);
free(tmp);
return;
}
struct passwd* pwd = getpwnam(args[2]);
if (!pwd) {
ERROR("invalid uid '%s'\n", args[2]);
free(tmp);
return;
}
uid = pwd->pw_uid;
struct group* grp = getgrnam(args[3]);
if (!grp) {
ERROR("invalid gid '%s'\n", args[3]);
free(tmp);
return;
}
gid = grp->gr_gid;
add_dev_perms(name, attr, perm, uid, gid, prefix, wildcard);
free(tmp);
}