From 1dcf2be94b9be2d366a0d2b70c2b1c7ebccf1443 Mon Sep 17 00:00:00 2001 From: Avi Weiss Date: Thu, 15 Oct 2026 20:57:01 +0300 Subject: fsnotify: preserve 64-bit pre-content ranges vfs_fallocate() and remap_verify_area() pass 64-bit lengths to fsnotify_file_area_perm(), which truncates them to size_t on 32-bit systems. Use 64 bit (unsigned) types throughout the entire pre-content notification chain to keep the full range. The userspace range field is already 64-bits. Fixes: 9740d17162de ("fsnotify: pass optional file access range in pre-content event") Signed-off-by: Avi Weiss Link: https://patch.msgid.link/20261015175701.3674449-1-thnkslprpt@gmail.com Signed-off-by: Jan Kara --- include/linux/fsnotify.h | 4 ++-- include/linux/fsnotify_backend.h | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h index bda798bc67bc..a4a29b365008 100644 --- a/include/linux/fsnotify.h +++ b/include/linux/fsnotify.h @@ -135,7 +135,7 @@ int fsnotify_open_perm_and_set_mode(struct file *file); * fsnotify_file_area_perm - permission hook before access to file range */ static inline int fsnotify_file_area_perm(struct file *file, int perm_mask, - const loff_t *ppos, size_t count) + const loff_t *ppos, u64 count) { /* * filesystem may be modified in the context of permission events @@ -213,7 +213,7 @@ static inline int fsnotify_open_perm_and_set_mode(struct file *file) } static inline int fsnotify_file_area_perm(struct file *file, int perm_mask, - const loff_t *ppos, size_t count) + const loff_t *ppos, u64 count) { return 0; } diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index a6d5c1a89cff..faf21564380d 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -323,7 +323,7 @@ struct fs_error_report { struct file_range { const struct path *path; loff_t pos; - size_t count; + u64 count; }; static inline const struct path *file_range_path(const struct file_range *range) @@ -946,12 +946,12 @@ static inline void fsnotify_init_event(struct fsnotify_event *event) INIT_LIST_HEAD(&event->list); } int fsnotify_pre_content(const struct path *path, const loff_t *ppos, - size_t count); + u64 count); #else static inline int fsnotify_pre_content(const struct path *path, - const loff_t *ppos, size_t count) + const loff_t *ppos, u64 count) { return 0; } -- cgit v1.2.3