forked from luck/tmp_suning_uos_patched
9385a84d7e
Pass fsnotify_iter_info into ->handle_event() handler so that it can release and reacquire SRCU lock via fsnotify_prepare_user_wait() and fsnotify_finish_user_wait() functions. These functions also make sure current marks are appropriately pinned so that iteration protected by srcu in fsnotify() stays safe. Reviewed-by: Miklos Szeredi <mszeredi@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
#include <linux/fsnotify_backend.h>
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#include <linux/inotify.h>
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#include <linux/slab.h> /* struct kmem_cache */
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struct inotify_event_info {
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struct fsnotify_event fse;
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int wd;
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u32 sync_cookie;
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int name_len;
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char name[];
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};
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struct inotify_inode_mark {
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struct fsnotify_mark fsn_mark;
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int wd;
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};
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static inline struct inotify_event_info *INOTIFY_E(struct fsnotify_event *fse)
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{
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return container_of(fse, struct inotify_event_info, fse);
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}
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extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
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struct fsnotify_group *group);
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extern int inotify_handle_event(struct fsnotify_group *group,
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struct inode *inode,
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struct fsnotify_mark *inode_mark,
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struct fsnotify_mark *vfsmount_mark,
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u32 mask, const void *data, int data_type,
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const unsigned char *file_name, u32 cookie,
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struct fsnotify_iter_info *iter_info);
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extern const struct fsnotify_ops inotify_fsnotify_ops;
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#ifdef CONFIG_INOTIFY_USER
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static inline void dec_inotify_instances(struct ucounts *ucounts)
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{
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dec_ucount(ucounts, UCOUNT_INOTIFY_INSTANCES);
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}
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static inline struct ucounts *inc_inotify_watches(struct ucounts *ucounts)
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{
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return inc_ucount(ucounts->ns, ucounts->uid, UCOUNT_INOTIFY_WATCHES);
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}
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static inline void dec_inotify_watches(struct ucounts *ucounts)
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{
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dec_ucount(ucounts, UCOUNT_INOTIFY_WATCHES);
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}
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#endif
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