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scandir.3 (84306) scandir.3 (108087)
1.\" Copyright (c) 1983, 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.

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25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30.\" SUCH DAMAGE.
31.\"
32.\" @(#)scandir.3 8.1 (Berkeley) 6/4/93
1.\" Copyright (c) 1983, 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.

--- 16 unchanged lines hidden (view full) ---

25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30.\" SUCH DAMAGE.
31.\"
32.\" @(#)scandir.3 8.1 (Berkeley) 6/4/93
33.\" $FreeBSD: head/lib/libc/gen/scandir.3 84306 2001-10-01 16:09:29Z ru $
33.\" $FreeBSD: head/lib/libc/gen/scandir.3 108087 2002-12-19 09:40:28Z ru $
34.\"
35.Dd June 4, 1993
36.Dt SCANDIR 3
37.Os
38.Sh NAME
39.Nm scandir ,
40.Nm alphasort
41.Nd scan a directory

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59.Xr malloc 3 .
60It returns the number of entries in the array.
61A pointer to the array of directory entries is stored in the location
62referenced by
63.Fa namelist .
64.Pp
65The
66.Fa select
34.\"
35.Dd June 4, 1993
36.Dt SCANDIR 3
37.Os
38.Sh NAME
39.Nm scandir ,
40.Nm alphasort
41.Nd scan a directory

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59.Xr malloc 3 .
60It returns the number of entries in the array.
61A pointer to the array of directory entries is stored in the location
62referenced by
63.Fa namelist .
64.Pp
65The
66.Fa select
67parameter is a pointer to a user supplied subroutine which is called by
67argument is a pointer to a user supplied subroutine which is called by
68.Fn scandir
69to select which entries are to be included in the array.
70The select routine is passed a
71pointer to a directory entry and should return a non-zero
72value if the directory entry is to be included in the array.
73If
74.Fa select
75is null, then all the directory entries will be included.
76.Pp
77The
78.Fa compar
68.Fn scandir
69to select which entries are to be included in the array.
70The select routine is passed a
71pointer to a directory entry and should return a non-zero
72value if the directory entry is to be included in the array.
73If
74.Fa select
75is null, then all the directory entries will be included.
76.Pp
77The
78.Fa compar
79parameter is a pointer to a user supplied subroutine which is passed to
79argument is a pointer to a user supplied subroutine which is passed to
80.Xr qsort 3
81to sort the completed array.
82If this pointer is null, the array is not sorted.
83.Pp
84The
85.Fn alphasort
86function
87is a routine which can be used for the
88.Fa compar
80.Xr qsort 3
81to sort the completed array.
82If this pointer is null, the array is not sorted.
83.Pp
84The
85.Fn alphasort
86function
87is a routine which can be used for the
88.Fa compar
89parameter to sort the array alphabetically.
89argument to sort the array alphabetically.
90.Pp
91The memory allocated for the array can be deallocated with
92.Xr free 3 ,
93by freeing each pointer in the array and then the array itself.
94.Sh DIAGNOSTICS
95Returns \-1 if the directory cannot be opened for reading or if
96.Xr malloc 3
97cannot allocate enough memory to hold all the data structures.

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90.Pp
91The memory allocated for the array can be deallocated with
92.Xr free 3 ,
93by freeing each pointer in the array and then the array itself.
94.Sh DIAGNOSTICS
95Returns \-1 if the directory cannot be opened for reading or if
96.Xr malloc 3
97cannot allocate enough memory to hold all the data structures.

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