inotify_init(2)

1INOTIFY_INIT(2)            Linux Programmer's Manual           INOTIFY_INIT(2)
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NAME

6       inotify_init, inotify_init1 - initialize an inotify instance
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SYNOPSIS

9       #include <sys/inotify.h>
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11       int inotify_init(void);
12       int inotify_init1(int flags);
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DESCRIPTION

15       For an overview of the inotify API, see inotify(7).
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17       inotify_init()  initializes  a  new inotify instance and returns a file
18       descriptor associated with a new inotify event queue.
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20       If flags is 0, then inotify_init1() is the same as inotify_init().  The
21       following  values  can be bitwise ORed in flags to obtain different be‐
22       havior:
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24       IN_NONBLOCK
25              Set the O_NONBLOCK file status flag on the open file description
26              (see  open(2))  referred  to  by the new file descriptor.  Using
27              this flag saves extra calls to fcntl(2) to achieve the same  re‐
28              sult.
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30       IN_CLOEXEC
31              Set the close-on-exec (FD_CLOEXEC) flag on the new file descrip‐
32              tor.  See the description of the O_CLOEXEC flag in  open(2)  for
33              reasons why this may be useful.
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RETURN VALUE

36       On success, these system calls return a new file descriptor.  On error,
37       -1 is returned, and errno is set to indicate the error.
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ERRORS

40       EINVAL (inotify_init1()) An invalid value was specified in flags.
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42       EMFILE The user limit on the total number of inotify instances has been
43              reached.
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45       EMFILE The per-process limit on the number of open file descriptors has
46              been reached.
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48       ENFILE The system-wide limit on the total number of open files has been
49              reached.
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51       ENOMEM Insufficient kernel memory is available.
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VERSIONS

54       inotify_init()  first  appeared  in  Linux  2.6.13; library support was
55       added to glibc in version 2.4.   inotify_init1()  was  added  in  Linux
56       2.6.27; library support was added to glibc in version 2.9.
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CONFORMING TO

59       These system calls are Linux-specific.
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COLOPHON

65       This  page  is  part of release 5.13 of the Linux man-pages project.  A
66       description of the project, information about reporting bugs,  and  the
67       latest     version     of     this    page,    can    be    found    at
68       https://www.kernel.org/doc/man-pages/.
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72Linux                             2020-04-11                   INOTIFY_INIT(2)