inotify_init, inotify_init1 - initialize an inotify instance
#include <sys/inotify.h>
int inotify_init(void);
int inotify_init1(int flags);
For an overview of the inotify API, see
inotify(7).
inotify_init() initializes a new inotify instance and returns a file
descriptor associated with a new inotify event queue.
If
flags is 0, then
inotify_init1() is the same as
inotify_init(). The following values can be bitwise ORed in
flags to obtain different behavior:
- IN_NONBLOCK
- Set the O_NONBLOCK file status flag on the open file description
(see open(2)) referred to by the new file descriptor. Using this
flag saves extra calls to fcntl(2) to achieve the same result.
- IN_CLOEXEC
- Set the close-on-exec (FD_CLOEXEC) flag on the new file descriptor.
See the description of the O_CLOEXEC flag in open(2) for
reasons why this may be useful.
On success, these system calls return a new file descriptor. On error, -1 is
returned, and
errno is set to indicate the error.
- EINVAL
- (inotify_init1()) An invalid value was specified in
flags.
- EMFILE
- The user limit on the total number of inotify instances has been
reached.
- EMFILE
- The per-process limit on the number of open file descriptors has been
reached.
- ENFILE
- The system-wide limit on the total number of open files has been
reached.
- ENOMEM
- Insufficient kernel memory is available.
inotify_init() first appeared in Linux 2.6.13; library support was added
to glibc in version 2.4.
inotify_init1() was added in Linux 2.6.27;
library support was added to glibc in version 2.9.
These system calls are Linux-specific.
inotify_add_watch(2),
inotify_rm_watch(2),
inotify(7)