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Some code adjustments

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topjohnwu
2019-02-24 23:09:34 -05:00
parent 63b18246d8
commit c9fa8118d1
15 changed files with 65 additions and 95 deletions
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native/jni/utils/file.cpp
+5 -26
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@@ -309,24 +309,22 @@ void fclone_attr(int sourcefd, int targetfd) {
fsetattr(targetfd, &a);
}
static void _mmap(int rw, const char *filename, void **buf, size_t *size) {
void *__mmap(const char *filename, size_t *size, bool rw) {
struct stat st;
void *buf;
int fd = xopen(filename, (rw ? O_RDWR : O_RDONLY) | O_CLOEXEC);
fstat(fd, &st);
if (S_ISBLK(st.st_mode))
ioctl(fd, BLKGETSIZE64, size);
else
*size = st.st_size;
*buf = *size > 0 ? xmmap(nullptr, *size, PROT_READ | (rw ? PROT_WRITE : 0), MAP_SHARED, fd, 0) : nullptr;
buf = *size > 0 ? xmmap(nullptr, *size, PROT_READ | (rw ? PROT_WRITE : 0), MAP_SHARED, fd, 0) : nullptr;
close(fd);
return buf;
}
void mmap_ro(const char *filename, void **buf, size_t *size) {
_mmap(0, filename, buf, size);
}
void mmap_rw(const char *filename, void **buf, size_t *size) {
_mmap(1, filename, buf, size);
*buf = __mmap(filename, size, false);
}
void fd_full_read(int fd, void **buf, size_t *size) {
@@ -359,25 +357,6 @@ void full_read_at(int dirfd, const char *filename, void **buf, size_t *size) {
close(fd);
}
void stream_full_read(int fd, void **buf, size_t *size) {
size_t cap = 1 << 20;
uint8_t tmp[1 << 20];
*buf = xmalloc(cap);
ssize_t read;
*size = 0;
while (1) {
read = xread(fd, tmp, sizeof(tmp));
if (read <= 0)
break;
if (*size + read > cap) {
cap *= 2;
*buf = realloc(*buf, cap);
}
memcpy((uint8_t *) *buf + *size, tmp, read);
*size += read;
}
}
void write_zero(int fd, size_t size) {
size_t pos = lseek(fd, 0, SEEK_CUR);
ftruncate(fd, pos + size);