From: Heinrich Schuchardt <xypron.g...@gmx.de> https://lkml.org/lkml/2011/1/12/112 holds a patch by Tvrtko Ursulin
Avoid having to provide a fake/invalid fd and path when flushing marks Currently for a group to flush marks it has set it needs to provide a fake or invalid (but resolvable) file descriptor and path when calling fanotify_mark. This patch pulls the flush handling a bit up so file descriptor and path are completely ignored when flushing. Eric wrote it was applied. https://lkml.org/lkml/2011/1/19/321 Unfortunately it is still not in the main stream code and the problem remains. I reworked the patch to be applicable again (the signature of fanotify_mark has changed since Tvrtko's work). Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de> --- fs/notify/fanotify/fanotify_user.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 287a22c..05bb38a 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -856,6 +856,15 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, group->priority == FS_PRIO_0) goto fput_and_out; + if (flags & FAN_MARK_FLUSH) { + ret = 0; + if (flags & FAN_MARK_MOUNT) + fsnotify_clear_vfsmount_marks_by_group(group); + else + fsnotify_clear_inode_marks_by_group(group); + goto fput_and_out; + } + ret = fanotify_find_path(dfd, pathname, &path, flags); if (ret) goto fput_and_out; @@ -867,7 +876,7 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, mnt = path.mnt; /* create/update an inode mark */ - switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE | FAN_MARK_FLUSH)) { + switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE)) { case FAN_MARK_ADD: if (flags & FAN_MARK_MOUNT) ret = fanotify_add_vfsmount_mark(group, mnt, mask, flags); @@ -880,12 +889,6 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, else ret = fanotify_remove_inode_mark(group, inode, mask, flags); break; - case FAN_MARK_FLUSH: - if (flags & FAN_MARK_MOUNT) - fsnotify_clear_vfsmount_marks_by_group(group); - else - fsnotify_clear_inode_marks_by_group(group); - break; default: ret = -EINVAL; } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
