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Add high compression ramdisk support

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topjohnwu
2017-12-06 12:51:16 +08:00
parent 742dc137ed
commit 9f6a27c20d
15 changed files with 231 additions and 138 deletions
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13
core/jni/utils/file.c
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@ -357,24 +357,25 @@ void restorecon(int dirfd, int force) {
#endif // SELINUX
static void _mmap(int rw, const char *filename, void **buf, size_t *size) {
static int _mmap(int rw, const char *filename, void **buf, size_t *size) {
struct stat st;
stat(filename, &st);
int fd = xopen(filename, rw ? O_RDWR : O_RDONLY);
fstat(fd, &st);
if (S_ISBLK(st.st_mode))
ioctl(fd, BLKGETSIZE64, size);
else
*size = st.st_size;
*buf = *size > 0 ? xmmap(NULL, *size, PROT_READ | (rw ? PROT_WRITE : 0), MAP_SHARED, fd, 0) : NULL;
close(fd);
return S_ISBLK(st.st_mode);
}
void mmap_ro(const char *filename, void **buf, size_t *size) {
_mmap(0, filename, buf, size);
int mmap_ro(const char *filename, void **buf, size_t *size) {
return _mmap(0, filename, buf, size);
}
void mmap_rw(const char *filename, void **buf, size_t *size) {
_mmap(1, filename, buf, size);
int mmap_rw(const char *filename, void **buf, size_t *size) {
return _mmap(1, filename, buf, size);
}
void full_read(int fd, void **buf, size_t *size) {