man3/getdirentries.3

   1 .\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
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  27 .TH GETDIRENTRIES 3 2016-03-15 "GNU" "Linux Programmer's Manual"
  28 .SH NAME
  29 getdirentries \- get directory entries in a filesystem-independent format
  30 .SH SYNOPSIS
  31 .nf
  32 .B #include <dirent.h>
  33 .PP
  34 .BI "ssize_t getdirentries(int " fd ", char *" buf ", size_t " nbytes ,
  35 .BI "                      off_t *" basep );
  36 .fi
  37 .PP
  38 .RS -4
  39 Feature Test Macro Requirements for glibc (see
  40 .BR feature_test_macros (7)):
  41 .RE
  42 .PP
  43 .BR getdirentries ():
  44 .nf
  45     Since glibc 2.19:
  46         _DEFAULT_SOURCE
  47     Glibc 2.19 and earlier:
  48         _BSD_SOURCE || _SVID_SOURCE
  49 .fi
  50 .SH DESCRIPTION
  51 Read directory entries from the directory specified by
  52 .I fd
  53 into
  54 .IR buf .
  55 At most
  56 .I nbytes
  57 are read.
  58 Reading starts at offset
  59 .IR *basep ,
  60 and
  61 .I *basep
  62 is updated with the new position after reading.
  63 .SH RETURN VALUE
  64 .BR getdirentries ()
  65 returns the number of bytes read or zero when at the end of the directory.
  66 If an error occurs, \-1 is returned, and
  67 .I errno
  68 is set to indicate the error.
  69 .SH ERRORS
  70 See the Linux library source code for details.
  71 .SH ATTRIBUTES
  72 For an explanation of the terms used in this section, see
  73 .BR attributes (7).
  74 .ad l
  75 .nh
  76 .TS
  77 allbox;
  78 lbx lb lb
  79 l l l.
  80 Interface       Attribute       Value
  81 T{
  82 .BR getdirentries ()
  83 T}      Thread safety   MT-Safe
  84 .TE
  85 .hy
  86 .ad
  87 .sp 1
  88 .SH CONFORMING TO
  89 Not in POSIX.1.
  90 Present on the BSDs, and a few other systems.
  91 Use
  92 .BR opendir (3)
  93 and
  94 .BR readdir (3)
  95 instead.
  96 .SH SEE ALSO
  97 .BR lseek (2),
  98 .BR open (2)