oxmc
f6176009b1
Stages TWRP's GUI engine and standalone tooling as PawletOS-owned modules instead of a bootable/recovery fork, per the plugin-architecture finding in NOTES-ota-recovery-ab.md: stock recovery_main.cpp already dlopen()s librecovery_ui_ext.so and dlsym()s make_device() from it at runtime, so the UI layer doesn't require touching stock bootable/recovery at all. Confirmed via source grep that recovery.cpp/install.cpp have zero references into the partition manager/backup engine/GUI code and vice versa. recovery_ui/: TWRP's gui/, minuitwrp/, libpixelflinger/ (copied verbatim, GPL-3.0), plus a new device/ providing PawletTwrpUI (a ScreenRecoveryUI subclass) and make_device() — written from scratch against stock's RecoveryUI/ScreenRecoveryUI virtual-method contract, since TWRP's own fork never ships a make_device() (every real TWRP device provides its own, and no reference device tree was available to copy from). Top-level Android.bp defines librecovery_ui_pawlet_twrp, the module TARGET_RECOVERY_UI_LIB should point at. gui/Android.bp and minuitwrp/Android.bp had their include_dirs rewritten for the new paths. recovery_toolkit/: partition manager, backup engine (tar/digest/adbbu/apex), filesystem/format support (exfat/dosfstools/gpt/fuse/mtp/crypto), scripting (openrecoveryscript/orscmd/twrpinstall), shared helpers. Source only, no Android.bp yet for any of it. Known gap blocking recovery_ui from actually linking: gui/'s libguitwrp depends on libaosprecovery, built from recovery_toolkit/helpers/twrp.cpp via a Go Soong plugin (libaosprecovery_defaults.go) not yet ported. Neither repo has been build-tested — no local AOSP build environment available in this workspace. See each directory's README.md for a precise done/not-done breakdown.
99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
/*
|
|
FUSE: Filesystem in Userspace
|
|
Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu>
|
|
|
|
This program can be distributed under the terms of the GNU LGPLv2.
|
|
See the file COPYING.LIB
|
|
*/
|
|
|
|
#include "fuse_lowlevel.h"
|
|
#include "fuse_kernel.h"
|
|
#include "fuse_i.h"
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
|
|
static int fuse_kern_chan_receive(struct fuse_chan **chp, char *buf,
|
|
size_t size)
|
|
{
|
|
struct fuse_chan *ch = *chp;
|
|
int err;
|
|
ssize_t res;
|
|
struct fuse_session *se = fuse_chan_session(ch);
|
|
assert(se != NULL);
|
|
|
|
restart:
|
|
res = read(fuse_chan_fd(ch), buf, size);
|
|
err = errno;
|
|
|
|
if (fuse_session_exited(se))
|
|
return 0;
|
|
if (res == -1) {
|
|
/* ENOENT means the operation was interrupted, it's safe
|
|
to restart */
|
|
if (err == ENOENT)
|
|
goto restart;
|
|
|
|
if (err == ENODEV) {
|
|
fuse_session_exit(se);
|
|
return 0;
|
|
}
|
|
/* Errors occurring during normal operation: EINTR (read
|
|
interrupted), EAGAIN (nonblocking I/O), ENODEV (filesystem
|
|
umounted) */
|
|
if (err != EINTR && err != EAGAIN)
|
|
perror("fuse: reading device");
|
|
return -err;
|
|
}
|
|
if ((size_t) res < sizeof(struct fuse_in_header)) {
|
|
fprintf(stderr, "short read on fuse device\n");
|
|
return -EIO;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static int fuse_kern_chan_send(struct fuse_chan *ch, const struct iovec iov[],
|
|
size_t count)
|
|
{
|
|
if (iov) {
|
|
ssize_t res = writev(fuse_chan_fd(ch), iov, count);
|
|
int err = errno;
|
|
|
|
if (res == -1) {
|
|
struct fuse_session *se = fuse_chan_session(ch);
|
|
|
|
assert(se != NULL);
|
|
|
|
/* ENOENT means the operation was interrupted */
|
|
if (!fuse_session_exited(se) && err != ENOENT)
|
|
perror("fuse: writing device");
|
|
return -err;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void fuse_kern_chan_destroy(struct fuse_chan *ch)
|
|
{
|
|
int fd = fuse_chan_fd(ch);
|
|
|
|
if (fd != -1)
|
|
close(fd);
|
|
}
|
|
|
|
#define MIN_BUFSIZE 0x21000
|
|
|
|
struct fuse_chan *fuse_kern_chan_new(int fd)
|
|
{
|
|
struct fuse_chan_ops op = {
|
|
.receive = fuse_kern_chan_receive,
|
|
.send = fuse_kern_chan_send,
|
|
.destroy = fuse_kern_chan_destroy,
|
|
};
|
|
size_t bufsize = getpagesize() + 0x1000;
|
|
bufsize = bufsize < MIN_BUFSIZE ? MIN_BUFSIZE : bufsize;
|
|
return fuse_chan_new(&op, fd, bufsize, NULL);
|
|
}
|