man3/getdirentries.3

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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 .B #include <dirent.h>
  32 .PP
  33 .BI "ssize_t getdirentries(int " fd ", char *" buf ", size_t " nbytes
  34 .BI ", off_t *" basep );
  35 .PP
  36 .in -4n
  37 Feature Test Macro Requirements for glibc (see
  38 .BR feature_test_macros (7)):
  39 .in
  40 .PP
  41 .BR getdirentries ():
  42     Since glibc 2.19:
  43         _DEFAULT_SOURCE
  44     Glibc 2.19 and earlier:
  45         _BSD_SOURCE || _SVID_SOURCE
  46 .SH DESCRIPTION
  47 Read directory entries from the directory specified by
  48 .I fd
  49 into
  50 .IR buf .
  51 At most
  52 .I nbytes
  53 are read.
  54 Reading starts at offset
  55 .IR *basep ,
  56 and
  57 .I *basep
  58 is updated with the new position after reading.
  59 .SH RETURN VALUE
  60 .BR getdirentries ()
  61 returns the number of bytes read or zero when at the end of the directory.
  62 If an error occurs, \-1 is returned, and
  63 .I errno
  64 is set appropriately.
  65 .SH ERRORS
  66 See the Linux library source code for details.
  67 .SH ATTRIBUTES
  68 For an explanation of the terms used in this section, see
  69 .BR attributes (7).
  70 .TS
  71 allbox;
  72 lb lb lb
  73 l l l.
  74 Interface       Attribute       Value
  75 T{
  76 .BR getdirentries ()
  77 T}      Thread safety   MT-Safe
  78 .TE
  79 .SH CONFORMING TO
  80 Not in POSIX.1.
  81 Present on the BSDs, and a few other systems.
  82 Use
  83 .BR opendir (3)
  84 and
  85 .BR readdir (3)
  86 instead.
  87 .SH SEE ALSO
  88 .BR lseek (2),
  89 .BR open (2)