int dexopt(const char *apk_path, uid_t uid, int is_public)
{
struct utimbuf ut;
struct stat apk_stat, dex_stat;
char dex_path[PKG_PATH_MAX];
char *end;
int res, zip_fd=-1, odex_fd=-1;
/* Before anything else: is there a .odex file? If so, we have
* pre-optimized the apk and there is nothing to do here.
*/
if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) {
return -1;
}
strcpy(dex_path, apk_path);
end = strrchr(dex_path, '.');
if (end != NULL) {
strcpy(end, ".odex");
if (stat(dex_path, &dex_stat) == 0) {
return 0;
}
}
if (create_cache_path(dex_path, apk_path)) {
return -1;
}
memset(&apk_stat, 0, sizeof(apk_stat));
stat(apk_path, &apk_stat);
zip_fd = open(apk_path, O_RDONLY, 0);
if (zip_fd < 0) {
LOGE("dexopt cannot open '%s' for input\n", apk_path);
return -1;
}
unlink(dex_path);
odex_fd = open(dex_path, O_RDWR | O_CREAT | O_EXCL, 0644);
if (odex_fd < 0) {
LOGE("dexopt cannot open '%s' for output\n", dex_path);
goto fail;
}
if (fchown(odex_fd, AID_SYSTEM, uid) < 0) {
LOGE("dexopt cannot chown '%s'\n", dex_path);
goto fail;
}
if (fchmod(odex_fd,
S_IRUSR|S_IWUSR|S_IRGRP |
(is_public ? S_IROTH : 0)) < 0) {
LOGE("dexopt cannot chmod '%s'\n", dex_path);
goto fail;
}
LOGD("DexInv: --- BEGIN '%s' ---\n", apk_path);
pid_t pid;
pid = fork();
if (pid == 0) {
/* child -- drop privileges before continuing */
if (setgid(uid) != 0) {
LOGE("setgid(%d) failed during dexopt\n", uid);
exit(64);
}
if (setuid(uid) != 0) {
LOGE("setuid(%d) during dexopt\n", uid);
exit(65);
}
if (flock(odex_fd, LOCK_EX | LOCK_NB) != 0) {
LOGE("flock(%s) failed: %s\n", dex_path, strerror(errno));
exit(66);
}
run_dexopt(zip_fd, odex_fd, apk_path); /* does not return */
exit(67);
} else {
res = wait_dexopt(pid, apk_path);
if (res != 0) {
LOGE("dexopt failed on '%s' res = %d\n", dex_path, res);
goto fail;
}
}
ut.actime = apk_stat.st_atime;
ut.modtime = apk_stat.st_mtime;
utime(dex_path, &ut);
close(odex_fd);
close(zip_fd);
return 0;
fail:
if (odex_fd >= 0) {
close(odex_fd);
unlink(dex_path);
}
if (zip_fd >= 0) {
close(zip_fd);
}
return -1;
}
int dexopt(const char *apk_path, uid_t uid, int is_public)
{
struct utimbuf ut;
struct stat apk_stat, dex_stat;
char dex_path[PKG_PATH_MAX];
char dexopt_flags[PROPERTY_VALUE_MAX];
char *end;
int res, zip_fd=-1, odex_fd=-1;
/* Before anything else: is there a .odex file? If so, we have
* pre-optimized the apk and there is nothing to do here.
*/
if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) {
return -1;
}
/* platform-specific flags affecting optimization and verification */
property_get("dalvik.vm.dexopt-flags", dexopt_flags, "");
strcpy(dex_path, apk_path);
end = strrchr(dex_path, '.');
if (end != NULL) {
strcpy(end, ".odex");
if (stat(dex_path, &dex_stat) == 0) {
return 0;
}
}
if (create_cache_path(dex_path, apk_path)) {
return -1;
}
memset(&apk_stat, 0, sizeof(apk_stat));
stat(apk_path, &apk_stat);
zip_fd = open(apk_path, O_RDONLY, 0);
if (zip_fd < 0) {
ALOGE("dexopt cannot open '%s' for input\n", apk_path);
return -1;
}
unlink(dex_path);
odex_fd = open(dex_path, O_RDWR | O_CREAT | O_EXCL, 0644);
if (odex_fd < 0) {
ALOGE("dexopt cannot open '%s' for output\n", dex_path);
goto fail;
}
if (fchmod(odex_fd,
S_IRUSR|S_IWUSR|S_IRGRP |
(is_public ? S_IROTH : 0)) < 0) {
ALOGE("dexopt cannot chmod '%s'\n", dex_path);
goto fail;
}
if (fchown(odex_fd, AID_SYSTEM, uid) < 0) {
ALOGE("dexopt cannot chown '%s'\n", dex_path);
goto fail;
}
ALOGV("DexInv: --- BEGIN '%s' ---\n", apk_path);
pid_t pid;
pid = fork();
if (pid == 0) {
/* child -- drop privileges before continuing */
if (setgid(uid) != 0) {
ALOGE("setgid(%d) failed during dexopt\n", uid);
exit(64);
}
if (setuid(uid) != 0) {
ALOGE("setuid(%d) during dexopt\n", uid);
exit(65);
}
// drop capabilities
struct __user_cap_header_struct capheader;
struct __user_cap_data_struct capdata[2];
memset(&capheader, 0, sizeof(capheader));
memset(&capdata, 0, sizeof(capdata));
capheader.version = _LINUX_CAPABILITY_VERSION_3;
if (capset(&capheader, &capdata[0]) < 0) {
ALOGE("capset failed: %s\n", strerror(errno));
exit(66);
}
if (flock(odex_fd, LOCK_EX | LOCK_NB) != 0) {
ALOGE("flock(%s) failed: %s\n", dex_path, strerror(errno));
exit(67);
}
run_dexopt(zip_fd, odex_fd, apk_path, dexopt_flags);
exit(68); /* only get here on exec failure */
} else {
res = wait_dexopt(pid, apk_path);
if (res != 0) {
ALOGE("dexopt failed on '%s' res = %d\n", dex_path, res);
goto fail;
}
}
ut.actime = apk_stat.st_atime;
ut.modtime = apk_stat.st_mtime;
utime(dex_path, &ut);
close(odex_fd);
close(zip_fd);
return 0;
fail:
if (odex_fd >= 0) {
close(odex_fd);
unlink(dex_path);
}
if (zip_fd >= 0) {
close(zip_fd);
}
return -1;
}
int dexopt(const char *apk_path, uid_t uid, int is_public)
{
struct utimbuf ut;
struct stat apk_stat, dex_stat;
char out_path[PKG_PATH_MAX];
char dexopt_flags[PROPERTY_VALUE_MAX];
char persist_sys_dalvik_vm_lib[PROPERTY_VALUE_MAX];
char *end;
int res, zip_fd=-1, out_fd=-1;
if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) {
return -1;
}
/* platform-specific flags affecting optimization and verification */
property_get("dalvik.vm.dexopt-flags", dexopt_flags, "");
ALOGV("dalvik.vm.dexopt_flags=%s\n", dexopt_flags);
/* The command to run depend ones the value of persist.sys.dalvik.vm.lib */
property_get("persist.sys.dalvik.vm.lib", persist_sys_dalvik_vm_lib, "libdvm.so");
/* Before anything else: is there a .odex file? If so, we have
* precompiled the apk and there is nothing to do here.
*/
sprintf(out_path, "%s%s", apk_path, ".odex");
if (stat(out_path, &dex_stat) == 0) {
return 0;
}
if (create_cache_path(out_path, apk_path)) {
return -1;
}
memset(&apk_stat, 0, sizeof(apk_stat));
stat(apk_path, &apk_stat);
zip_fd = open(apk_path, O_RDONLY, 0);
if (zip_fd < 0) {
ALOGE("installd cannot open '%s' for input during dexopt\n", apk_path);
return -1;
}
unlink(out_path);
out_fd = open(out_path, O_RDWR | O_CREAT | O_EXCL, 0644);
if (out_fd < 0) {
ALOGE("installd cannot open '%s' for output during dexopt\n", out_path);
goto fail;
}
if (fchmod(out_fd,
S_IRUSR|S_IWUSR|S_IRGRP |
(is_public ? S_IROTH : 0)) < 0) {
ALOGE("installd cannot chmod '%s' during dexopt\n", out_path);
goto fail;
}
if (fchown(out_fd, AID_SYSTEM, uid) < 0) {
ALOGE("installd cannot chown '%s' during dexopt\n", out_path);
goto fail;
}
ALOGV("DexInv: --- BEGIN '%s' ---\n", apk_path);
pid_t pid;
pid = fork();
if (pid == 0) {
/* child -- drop privileges before continuing */
if (setgid(uid) != 0) {
ALOGE("setgid(%d) failed in installd during dexopt\n", uid);
exit(64);
}
if (setuid(uid) != 0) {
ALOGE("setuid(%d) failed in installd during dexopt\n", uid);
exit(65);
}
// drop capabilities
struct __user_cap_header_struct capheader;
struct __user_cap_data_struct capdata[2];
memset(&capheader, 0, sizeof(capheader));
memset(&capdata, 0, sizeof(capdata));
capheader.version = _LINUX_CAPABILITY_VERSION_3;
if (capset(&capheader, &capdata[0]) < 0) {
ALOGE("capset failed: %s\n", strerror(errno));
exit(66);
}
if (flock(out_fd, LOCK_EX | LOCK_NB) != 0) {
ALOGE("flock(%s) failed: %s\n", out_path, strerror(errno));
exit(67);
}
if (strncmp(persist_sys_dalvik_vm_lib, "libdvm", 6) == 0) {
run_dexopt(zip_fd, out_fd, apk_path, out_path, dexopt_flags);
} else if (strncmp(persist_sys_dalvik_vm_lib, "libart", 6) == 0) {
run_dex2oat(zip_fd, out_fd, apk_path, out_path, dexopt_flags);
} else {
exit(69); /* Unexpected persist.sys.dalvik.vm.lib value */
}
exit(68); /* only get here on exec failure */
} else {
res = wait_child(pid);
if (res == 0) {
ALOGV("DexInv: --- END '%s' (success) ---\n", apk_path);
} else {
ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", apk_path, res);
goto fail;
}
}
ut.actime = apk_stat.st_atime;
ut.modtime = apk_stat.st_mtime;
utime(out_path, &ut);
close(out_fd);
close(zip_fd);
return 0;
fail:
if (out_fd >= 0) {
close(out_fd);
unlink(out_path);
}
if (zip_fd >= 0) {
close(zip_fd);
}
return -1;
}
