From 9474dcf08999fb89bb6aac05f104041dcf72f9cb Mon Sep 17 00:00:00 2001 From: Thomas Bushnell Date: Mon, 10 Aug 1998 17:42:39 +0000 Subject: Sun Aug 9 21:09:24 1998 Jose M. Moya * diskfs.h (struct node): Add filemod_reqs member. (struct modreq): Rename struct dirmod to reqmod as it is used for directory and file notifications. (diskfs_notice_filechange): Add prototype. * dir-chg.c (diskfs_S_dir_notice_changes): Check nowait_dir_changed return value for errors. (diskfs_notice_dirchange): Remove requests when the notification fails. * file-chg.c (diskfs_S_file_notice_changes): Implement. (diskfs_notice_filechange): New function. * node-make.c (diskfs_make_node): Initialize filemod_reqs. * node-drop.c (free_modreqs): New function. (diskfs_drop_node): Free filemod_reqs. * file-chauthor.c (dithkfth_TH_file_chauthor): Add file notifications. * file-chflags.c (diskfs_S_file_chflags): Likewise. * file-chmod.c (diskfs_S_file_chmod): Likewise. * file-chown.c (diskfs_S_file_chown): Likewise. * file-set-size.c (diskfs_S_file_set_size): Likewise. * io-prenotify.c (diskfs_S_io_prenotify): Likewise. * io-write.c (diskfs_S_io_write): Likewise. * node-rdwr.c (diskfs_node_rdwr): Likewise. --- libdiskfs/file-chg.c | 48 +++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 45 insertions(+), 3 deletions(-) (limited to 'libdiskfs/file-chg.c') diff --git a/libdiskfs/file-chg.c b/libdiskfs/file-chg.c index 27d932e6..e9535591 100644 --- a/libdiskfs/file-chg.c +++ b/libdiskfs/file-chg.c @@ -17,11 +17,53 @@ #include "priv.h" #include "fs_S.h" +#include "ourfs_notify_U.h" kern_return_t -diskfs_S_file_notice_changes (struct protid *cred __attribute__ ((unused)), - mach_port_t notify __attribute__ ((unused))) +diskfs_S_file_notice_changes (struct protid *cred, mach_port_t notify) { - return EOPNOTSUPP; + error_t err; + struct modreq *req; + struct node *np; + + if (!cred) + return EOPNOTSUPP; + + np = cred->po->np; + mutex_lock (&np->lock); + err = nowait_file_changed (notify, FILE_CHANGED_NULL, 0, 0); + if (err) + { + mutex_unlock (&np->lock); + return err; + } + req = malloc (sizeof (struct modreq)); + req->port = notify; + req->next = np->filemod_reqs; + np->filemod_reqs = req; + mutex_unlock (&np->lock); + return 0; } +void +diskfs_notice_filechange (struct node *dp, enum file_changed_type type, + off_t start, off_t end) +{ + error_t err; + struct modreq **preq; + + preq = &dp->filemod_reqs; + while (*preq) + { + struct modreq *req = *preq; + err = nowait_file_changed (req->port, type, start, end); + if (err) + { /* remove notify port */ + *preq = req->next; + mach_port_deallocate (mach_task_self (), req->port); + free (req); + } + else + preq = &req->next; + } +} -- cgit v1.2.3