fanotify_init.2, fanotify_mark.2, fanotify.7: Minor fixes to Matthew Bobrowski's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2019-06-08 09:07:48 +02:00
parent 0a4db6dc74
commit 817c8240f3
3 changed files with 27 additions and 21 deletions

View File

@ -1,4 +1,4 @@
.\" Copyright (C) 2013, Heinrich Schuchardt <xypron.glpk@gmx.de>
\" Copyright (C) 2013, Heinrich Schuchardt <xypron.glpk@gmx.de>
.\"
.\" %%%LICENSE_START(VERBATIM)
.\" Permission is granted to make and distribute verbatim copies of this
@ -108,7 +108,7 @@ Additionally, it may be used for applications that are interested in
directory entry events, such as
.BR FAN_CREATE ,
.BR FAN_ATTRIB ,
.BR FAN_MOVE
.BR FAN_MOVE ,
and
.BR FAN_DELETE
for example.

View File

@ -236,7 +236,7 @@ or
is required.
.TP
.B FAN_ONDIR
Create events for directories \(em for example, when
Create events for directories\(emfor example, when
.BR opendir (3),
.BR readdir (3)
(but see BUGS), and
@ -252,15 +252,17 @@ file descriptor has been initialized with the flag
In the context of directory entry events, such as
.BR FAN_CREATE ,
.BR FAN_DELETE ,
.BR FAN_MOVED_FROM
.BR FAN_MOVED_FROM ,
and
.BR FAN_MOVED_TO
for example, specifying the flag
.BR FAN_ONDIR
is required in order to create events when subdirectory entries are
modified (i.e. mkdir/rmdir).
Subdirectory entry modification events will never be merged with non
subdirectory entry modification events.
modified (i.e.,
.BR mkdir (2)/
.BR rmdir (2)).
Subdirectory entry modification events will never be merged with
nonsubdirectory entry modification events.
This flag is never reported individually within an event and is always
supplied in conjunction with another event type.
.TP
@ -396,10 +398,12 @@ do not specify a directory.
.B EXDEV
The object indicated by
.I pathname
resides within a filesystem subvolume (e.g. btrfs) which uses a different
resides within a filesystem subvolume (e.g.,
.BR btrfs (5))
which uses a different
.I fsid
than its root superblock.
This error can only be returned when an fanotify file descriptor returned
This error can be returned only when an fanotify file descriptor returned
by
.BR fanotify_init (2)
has been created with
@ -410,8 +414,9 @@ The object indicated by
.I pathname
is not associated with a filesystem that supports
.I fsid
(e.g. tmpfs).
This error can only be returned when an fanotify file descriptor returned
(e.g.,
.BR tmpfs (5)).
This error can be returned only when an fanotify file descriptor returned
by
.BR fanotify_init (2)
has been created with
@ -422,7 +427,7 @@ The object indicated by
.I pathname
is associated with a filesystem that does not support the encoding of file
handles.
This error can only be returned when an fanotify file descriptor returned
This error can be returned only when an fanotify file descriptor returned
by
.BR fanotify_init (2)
has been created with

View File

@ -114,7 +114,7 @@ Notification events are merely informative
and require no action to be taken by
the receiving application with the exception being that the file
descriptor provided within a generic event must be closed.
The closing of file descriptors for each event only applies to
The closing of file descriptors for each event applies only to
applications that have initialized fanotify without using
.BR FAN_REPORT_FID
(see below).
@ -166,7 +166,7 @@ struct fanotify_event_metadata {
.EE
.in
.PP
In the instance that
In the case where
.BR FAN_REPORT_FID
is supplied as one of the flags to
.BR fanotify_init (2),
@ -391,7 +391,7 @@ This is a structure of type
It is a generic header that contains information used to describe
additional information attached to the event.
For example, when an fanotify file descriptor is created using
.B FAN_REPORT_FID
.BR FAN_REPORT_FID ,
the
.I info_type
field of this header is set to
@ -422,21 +422,22 @@ This is a variable length structure of type
.IR file_handle .
It is an opaque handle that corresponds to a specified object on a
filesystem as returned by
.BR name_to_handle_at (2) .
.BR name_to_handle_at (2).
It can be used to uniquely identify a file on a filesystem and can be
passed as an argument to
.BR open_by_handle_at (2) .
.BR open_by_handle_at (2).
Note that for directory entry events, such as
.BR FAN_CREATE ,
.BR FAN_DELETE ,
.BR FAN_MOVE
and
.BR FAN_MOVE ,
the
.IR file_handle
describes the modified directory and not the created/deleted/moved child
object.
The events
.BR FAN_ATTRIB ,
.BR FAN_DELETE_SELF
.BR FAN_DELETE_SELF ,
and
.BR FAN_MOVE_SELF
will carry the
@ -716,7 +717,7 @@ event occurred.
Execution of the program ends when the user presses the ENTER key.
.PP
The second example program output was captured from fanotify_fid.
There are two discrete invocations to this program with each invocation
There are two discrete invocations of this program, with each invocation
accommodating a different action performed on a watched object.
This first session shows a mark being placed on
.IR /home/user .
@ -1069,7 +1070,7 @@ int main(int argc, char **argv)
snprintf(procfd_path, sizeof(procfd_path), "/proc/self/fd/%d", event_fd);
/* Retreive and print the path of the modified dentry */
/* Retrieve and print the path of the modified dentry */
path_len = readlink(procfd_path, path, sizeof(path) - 1);
if (path_len == -1) {
perror("readlink");