scandir(3UCB) SunOS/BSD Compatibility Library Functions scandir(3UCB)NAME
scandir, alphasort - scan a directory
SYNOPSIS
/usr/ucb/cc [ flag... ] file...
#include <sys/types.h>
#include <sys/dir.h>
int scandir(dirname, namelist, select, dcomp)
char *dirname;
struct direct *(*namelist[]);
int (*select(), (*dcomp)();
int alphasort(d1, d2)
struct direct **d1, **d2;
DESCRIPTION
The scandir() function reads the directory dirname and builds an array
of pointers to directory entries using malloc(3C). The second parame‐
ter is a pointer to an array of structure pointers. The third parameter
is a pointer to a routine which is called with a pointer to a directory
entry and should return a non zero value if the directory entry should
be included in the array. If this pointer is NULL, then all the direc‐
tory entries will be included. The last argument is a pointer to a rou‐
tine which is passed to qsort(3C), which sorts the completed array. If
this pointer is NULL, the array is not sorted.
The alphasort() function sorts the array alphabetically.
RETURN VALUES
The scandir() function returns the number of entries in the array and a
pointer to the array through the parameter namelist. The scandir()
function returns −1 if the directory cannot be opened for reading or if
malloc(3C) cannot allocate enough memory to hold all the data struc‐
tures.
The alphasort() function returns an integer greater than, equal to, or
less than 0 if the directory entry name pointed to by d1 is greater
than, equal to, or less than the directory entry name pointed to by d2.
USAGE
The scandir() and alphasort() functions have transitional interfaces
for 64-bit file offsets. See lf64(5).
SEE ALSOcc(1B), getdents(2), malloc(3C), qsort(3C), readdir(3UCB), readdir(3C),
lf64(5)NOTES
Use of these functions should be restricted to applications written on
BSD platforms. Use of these functions with any of the system libraries
or in multithreaded applications is unsupported.
SunOS 5.10 30 Oct 2007 scandir(3UCB)
