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Brute force resizeimg for Crapsung device :)

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topjohnwu 2017-10-12 04:20:32 +08:00
parent fe4b3df7e9
commit ce3f3b09b4
1 changed files with 29 additions and 4 deletions
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33
jni/utils/img.c
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@ -2,6 +2,7 @@
*/ */
#include <unistd.h> #include <unistd.h>
#include <libgen.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/wait.h> #include <sys/wait.h>
#include <sys/mount.h> #include <sys/mount.h>
@ -96,7 +97,7 @@ int resize_img(const char *img, int size) {
if (e2fsck(img)) if (e2fsck(img))
return 1; return 1;
char buffer[128]; char buffer[128];
int pid, status, fd = -1; int pid, fd = -1, used, total;
snprintf(buffer, sizeof(buffer), "%dM", size); snprintf(buffer, sizeof(buffer), "%dM", size);
pid = exec_command(1, &fd, NULL, "resize2fs", img, buffer, NULL); pid = exec_command(1, &fd, NULL, "resize2fs", img, buffer, NULL);
if (pid < 0) if (pid < 0)
@ -104,8 +105,32 @@ int resize_img(const char *img, int size) {
while (fdgets(buffer, sizeof(buffer), fd)) while (fdgets(buffer, sizeof(buffer), fd))
LOGD("magisk_img: %s", buffer); LOGD("magisk_img: %s", buffer);
close(fd); close(fd);
waitpid(pid, &status, 0); waitpid(pid, NULL, 0);
return WEXITSTATUS(status);
// Double check our image size
get_img_size(img, &used, &total);
if (total != size) {
// Sammy crap occurs or resize2fs failed, lets create a new image!
char *dir = dirname(img);
snprintf(buffer, sizeof(buffer), "%s/tmp.img", dir);
create_img(buffer, size);
char *s_loop, *t_loop;
s_loop = mount_image(img, SOURCE_TMP);
if (s_loop == NULL) return 1;
t_loop = mount_image(buffer, TARGET_TMP);
if (t_loop == NULL) return 1;
cp_afc(SOURCE_TMP, TARGET_TMP);
umount_image(SOURCE_TMP, s_loop);
umount_image(TARGET_TMP, t_loop);
rmdir(SOURCE_TMP);
rmdir(TARGET_TMP);
free(s_loop);
free(t_loop);
rename(buffer, img);
}
return 0;
} }
char *mount_image(const char *img, const char *target) { char *mount_image(const char *img, const char *target) {
@ -150,7 +175,7 @@ int merge_img(const char *source, const char *target) {
get_img_size(source, &s_used, &s_total); get_img_size(source, &s_used, &s_total);
get_img_size(target, &t_used, &t_total); get_img_size(target, &t_used, &t_total);
n_total = round_size(s_used + t_used); n_total = round_size(s_used + t_used);
if (n_total != t_total) if (n_total > t_total)
resize_img(target, n_total); resize_img(target, n_total);
xmkdir(SOURCE_TMP, 0755); xmkdir(SOURCE_TMP, 0755);