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path: root/hw/usb/dev-mtp.c
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Diffstat (limited to 'hw/usb/dev-mtp.c')
-rw-r--r--hw/usb/dev-mtp.c274
1 files changed, 110 insertions, 164 deletions
diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
index 169ee50c02..4ee4fc5a89 100644
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -11,17 +11,16 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
+#include "qemu/error-report.h"
#include <wchar.h>
#include <dirent.h>
#include <sys/statvfs.h>
-#ifdef CONFIG_INOTIFY1
-#include <sys/inotify.h>
-#include "qemu/main-loop.h"
-#endif
+
#include "qemu-common.h"
#include "qemu/iov.h"
+#include "qemu/filemonitor.h"
#include "trace.h"
#include "hw/usb.h"
#include "desc.h"
@@ -132,7 +131,6 @@ enum {
EP_EVENT,
};
-#ifdef CONFIG_INOTIFY1
typedef struct MTPMonEntry MTPMonEntry;
struct MTPMonEntry {
@@ -141,7 +139,6 @@ struct MTPMonEntry {
QTAILQ_ENTRY(MTPMonEntry) next;
};
-#endif
struct MTPControl {
uint16_t code;
@@ -172,10 +169,8 @@ struct MTPObject {
char *name;
char *path;
struct stat stat;
-#ifdef CONFIG_INOTIFY1
- /* inotify watch cookie */
- int watchfd;
-#endif
+ /* file monitor watch id */
+ int watchid;
MTPObject *parent;
uint32_t nchildren;
QLIST_HEAD(, MTPObject) children;
@@ -198,11 +193,8 @@ struct MTPState {
bool readonly;
QTAILQ_HEAD(, MTPObject) objects;
-#ifdef CONFIG_INOTIFY1
- /* inotify descriptor */
- int inotifyfd;
+ QFileMonitor *file_monitor;
QTAILQ_HEAD(, MTPMonEntry) events;
-#endif
/* Responder is expecting a write operation */
bool write_pending;
struct {
@@ -391,6 +383,7 @@ static MTPObject *usb_mtp_object_alloc(MTPState *s, uint32_t handle,
goto ignore;
}
+ o->watchid = -1;
o->handle = handle;
o->parent = parent;
o->name = g_strdup(name);
@@ -437,6 +430,10 @@ static void usb_mtp_object_free(MTPState *s, MTPObject *o)
trace_usb_mtp_object_free(s->dev.addr, o->handle, o->path);
+ if (o->watchid != -1 && s->file_monitor) {
+ qemu_file_monitor_remove_watch(s->file_monitor, o->path, o->watchid);
+ }
+
QTAILQ_REMOVE(&s->objects, o, next);
if (o->parent) {
QLIST_REMOVE(o, list);
@@ -488,6 +485,10 @@ static MTPObject *usb_mtp_object_lookup_name(MTPObject *parent,
{
MTPObject *iter;
+ if (len == -1) {
+ len = strlen(name);
+ }
+
QLIST_FOREACH(iter, &parent->children, list) {
if (strncmp(iter->name, name, len) == 0) {
return iter;
@@ -497,13 +498,12 @@ static MTPObject *usb_mtp_object_lookup_name(MTPObject *parent,
return NULL;
}
-#ifdef CONFIG_INOTIFY1
-static MTPObject *usb_mtp_object_lookup_wd(MTPState *s, int wd)
+static MTPObject *usb_mtp_object_lookup_id(MTPState *s, int id)
{
MTPObject *iter;
QTAILQ_FOREACH(iter, &s->objects, next) {
- if (iter->watchfd == wd) {
+ if (iter->watchid == id) {
return iter;
}
}
@@ -511,159 +511,103 @@ static MTPObject *usb_mtp_object_lookup_wd(MTPState *s, int wd)
return NULL;
}
-static void inotify_watchfn(void *arg)
+static void file_monitor_event(int id,
+ QFileMonitorEvent ev,
+ const char *name,
+ void *opaque)
{
- MTPState *s = arg;
- ssize_t bytes;
- /* From the man page: atleast one event can be read */
- int pos;
- char buf[sizeof(struct inotify_event) + NAME_MAX + 1];
-
- for (;;) {
- bytes = read(s->inotifyfd, buf, sizeof(buf));
- pos = 0;
-
- if (bytes <= 0) {
- /* Better luck next time */
+ MTPState *s = opaque;
+ MTPObject *parent = usb_mtp_object_lookup_id(s, id);
+ MTPMonEntry *entry = NULL;
+ MTPObject *o;
+
+ if (!parent) {
+ return;
+ }
+
+ switch (ev) {
+ case QFILE_MONITOR_EVENT_CREATED:
+ if (usb_mtp_object_lookup_name(parent, name, -1)) {
+ /* Duplicate create event */
return;
}
+ entry = g_new0(MTPMonEntry, 1);
+ entry->handle = s->next_handle;
+ entry->event = EVT_OBJ_ADDED;
+ o = usb_mtp_add_child(s, parent, name);
+ if (!o) {
+ g_free(entry);
+ return;
+ }
+ trace_usb_mtp_file_monitor_event(s->dev.addr, name, "Obj Added");
+ break;
+ case QFILE_MONITOR_EVENT_DELETED:
/*
- * TODO: Ignore initiator initiated events.
- * For now we are good because the store is RO
+ * The kernel issues a IN_IGNORED event
+ * when a dir containing a watchpoint is
+ * deleted, so we don't have to delete the
+ * watchpoint
*/
- while (bytes > 0) {
- char *p = buf + pos;
- struct inotify_event *event = (struct inotify_event *)p;
- int watchfd = 0;
- uint32_t mask = event->mask & (IN_CREATE | IN_DELETE |
- IN_MODIFY | IN_IGNORED);
- MTPObject *parent = usb_mtp_object_lookup_wd(s, event->wd);
- MTPMonEntry *entry = NULL;
- MTPObject *o;
-
- pos = pos + sizeof(struct inotify_event) + event->len;
- bytes = bytes - pos;
-
- if (!parent) {
- continue;
- }
-
- switch (mask) {
- case IN_CREATE:
- if (usb_mtp_object_lookup_name
- (parent, event->name, event->len)) {
- /* Duplicate create event */
- continue;
- }
- entry = g_new0(MTPMonEntry, 1);
- entry->handle = s->next_handle;
- entry->event = EVT_OBJ_ADDED;
- o = usb_mtp_add_child(s, parent, event->name);
- if (!o) {
- g_free(entry);
- continue;
- }
- o->watchfd = watchfd;
- trace_usb_mtp_inotify_event(s->dev.addr, event->name,
- event->mask, "Obj Added");
- break;
-
- case IN_DELETE:
- /*
- * The kernel issues a IN_IGNORED event
- * when a dir containing a watchpoint is
- * deleted, so we don't have to delete the
- * watchpoint
- */
- o = usb_mtp_object_lookup_name(parent, event->name, event->len);
- if (!o) {
- continue;
- }
- entry = g_new0(MTPMonEntry, 1);
- entry->handle = o->handle;
- entry->event = EVT_OBJ_REMOVED;
- trace_usb_mtp_inotify_event(s->dev.addr, o->path,
- event->mask, "Obj Deleted");
- usb_mtp_object_free(s, o);
- break;
-
- case IN_MODIFY:
- o = usb_mtp_object_lookup_name(parent, event->name, event->len);
- if (!o) {
- continue;
- }
- entry = g_new0(MTPMonEntry, 1);
- entry->handle = o->handle;
- entry->event = EVT_OBJ_INFO_CHANGED;
- trace_usb_mtp_inotify_event(s->dev.addr, o->path,
- event->mask, "Obj Modified");
- break;
-
- case IN_IGNORED:
- trace_usb_mtp_inotify_event(s->dev.addr, parent->path,
- event->mask, "Obj parent dir ignored");
- break;
-
- default:
- fprintf(stderr, "usb-mtp: failed to parse inotify event\n");
- continue;
- }
-
- if (entry) {
- QTAILQ_INSERT_HEAD(&s->events, entry, next);
- }
+ o = usb_mtp_object_lookup_name(parent, name, -1);
+ if (!o) {
+ return;
}
- }
-}
+ entry = g_new0(MTPMonEntry, 1);
+ entry->handle = o->handle;
+ entry->event = EVT_OBJ_REMOVED;
+ trace_usb_mtp_file_monitor_event(s->dev.addr, o->path, "Obj Deleted");
+ usb_mtp_object_free(s, o);
+ break;
-static int usb_mtp_inotify_init(MTPState *s)
-{
- int fd;
+ case QFILE_MONITOR_EVENT_MODIFIED:
+ o = usb_mtp_object_lookup_name(parent, name, -1);
+ if (!o) {
+ return;
+ }
+ entry = g_new0(MTPMonEntry, 1);
+ entry->handle = o->handle;
+ entry->event = EVT_OBJ_INFO_CHANGED;
+ trace_usb_mtp_file_monitor_event(s->dev.addr, o->path, "Obj Modified");
+ break;
- fd = inotify_init1(IN_NONBLOCK);
- if (fd == -1) {
- return 1;
- }
+ case QFILE_MONITOR_EVENT_IGNORED:
+ trace_usb_mtp_file_monitor_event(s->dev.addr, parent->path,
+ "Obj parent dir ignored");
+ break;
- QTAILQ_INIT(&s->events);
- s->inotifyfd = fd;
+ case QFILE_MONITOR_EVENT_ATTRIBUTES:
+ break;
- qemu_set_fd_handler(fd, inotify_watchfn, NULL, s);
+ default:
+ g_assert_not_reached();
+ }
- return 0;
+ if (entry) {
+ QTAILQ_INSERT_HEAD(&s->events, entry, next);
+ }
}
-static void usb_mtp_inotify_cleanup(MTPState *s)
+static void usb_mtp_file_monitor_cleanup(MTPState *s)
{
MTPMonEntry *e, *p;
- if (!s->inotifyfd) {
- return;
- }
-
- qemu_set_fd_handler(s->inotifyfd, NULL, NULL, s);
- close(s->inotifyfd);
-
QTAILQ_FOREACH_SAFE(e, &s->events, next, p) {
QTAILQ_REMOVE(&s->events, e, next);
g_free(e);
}
-}
-static int usb_mtp_add_watch(int inotifyfd, const char *path)
-{
- uint32_t mask = IN_CREATE | IN_DELETE | IN_MODIFY;
-
- return inotify_add_watch(inotifyfd, path, mask);
+ qemu_file_monitor_free(s->file_monitor);
+ s->file_monitor = NULL;
}
-#endif
+
static void usb_mtp_object_readdir(MTPState *s, MTPObject *o)
{
struct dirent *entry;
DIR *dir;
int fd;
+ Error *err = NULL;
if (o->have_children) {
return;
@@ -679,16 +623,21 @@ static void usb_mtp_object_readdir(MTPState *s, MTPObject *o)
close(fd);
return;
}
-#ifdef CONFIG_INOTIFY1
- int watchfd = usb_mtp_add_watch(s->inotifyfd, o->path);
- if (watchfd == -1) {
- fprintf(stderr, "usb-mtp: failed to add watch for %s\n", o->path);
- } else {
- trace_usb_mtp_inotify_event(s->dev.addr, o->path,
- 0, "Watch Added");
- o->watchfd = watchfd;
+
+ if (s->file_monitor) {
+ int id = qemu_file_monitor_add_watch(s->file_monitor, o->path, NULL,
+ file_monitor_event, s, &err);
+ if (id == -1) {
+ error_report("usb-mtp: failed to add watch for %s: %s", o->path,
+ error_get_pretty(err));
+ error_free(err);
+ } else {
+ trace_usb_mtp_file_monitor_event(s->dev.addr, o->path,
+ "Watch Added");
+ o->watchid = id;
+ }
}
-#endif
+
while ((entry = readdir(dir)) != NULL) {
usb_mtp_add_child(s, o, entry->d_name);
}
@@ -1196,13 +1145,11 @@ enum {
/* Assumes that children, if any, have been already freed */
static void usb_mtp_object_free_one(MTPState *s, MTPObject *o)
{
-#ifndef CONFIG_INOTIFY1
assert(o->nchildren == 0);
QTAILQ_REMOVE(&s->objects, o, next);
g_free(o->name);
g_free(o->path);
g_free(o);
-#endif
}
static int usb_mtp_deletefn(MTPState *s, MTPObject *o, uint32_t trans)
@@ -1301,6 +1248,7 @@ static void usb_mtp_command(MTPState *s, MTPControl *c)
MTPData *data_in = NULL;
MTPObject *o = NULL;
uint32_t nres = 0, res0 = 0;
+ Error *err = NULL;
/* sanity checks */
if (c->code >= CMD_CLOSE_SESSION && s->session == 0) {
@@ -1328,19 +1276,21 @@ static void usb_mtp_command(MTPState *s, MTPControl *c)
trace_usb_mtp_op_open_session(s->dev.addr);
s->session = c->argv[0];
usb_mtp_object_alloc(s, s->next_handle++, NULL, s->root);
-#ifdef CONFIG_INOTIFY1
- if (usb_mtp_inotify_init(s)) {
- fprintf(stderr, "usb-mtp: file monitoring init failed\n");
+
+ s->file_monitor = qemu_file_monitor_new(&err);
+ if (err) {
+ error_report("usb-mtp: file monitoring init failed: %s",
+ error_get_pretty(err));
+ error_free(err);
+ } else {
+ QTAILQ_INIT(&s->events);
}
-#endif
break;
case CMD_CLOSE_SESSION:
trace_usb_mtp_op_close_session(s->dev.addr);
s->session = 0;
s->next_handle = 0;
-#ifdef CONFIG_INOTIFY1
- usb_mtp_inotify_cleanup(s);
-#endif
+ usb_mtp_file_monitor_cleanup(s);
usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects));
assert(QTAILQ_EMPTY(&s->objects));
break;
@@ -1553,9 +1503,7 @@ static void usb_mtp_handle_reset(USBDevice *dev)
trace_usb_mtp_reset(s->dev.addr);
-#ifdef CONFIG_INOTIFY1
- usb_mtp_inotify_cleanup(s);
-#endif
+ usb_mtp_file_monitor_cleanup(s);
usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects));
s->session = 0;
usb_mtp_data_free(s->data_in);
@@ -2026,7 +1974,6 @@ static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p)
}
break;
case EP_EVENT:
-#ifdef CONFIG_INOTIFY1
if (!QTAILQ_EMPTY(&s->events)) {
struct MTPMonEntry *e = QTAILQ_LAST(&s->events);
uint32_t handle;
@@ -2050,7 +1997,6 @@ static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p)
g_free(e);
return;
}
-#endif
p->status = USB_RET_NAK;
return;
default:
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-13 03:51:25 +0000