BSD 2.11 - man page for scandir (bsd section 3)
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scandir, alphasort - scan a directory
scandir(dirname, namelist, select, compar)
struct direct *(*namelist);
struct direct **d1, **d2;
Scandir reads the directory dirname and builds an array of pointers to directory entries
using malloc(3). It returns the number of entries in the array and a pointer to the array
The select parameter is a pointer to a user supplied subroutine which is called by scandir
to select which entries are to be included in the array. The select routine is passed a
pointer to a directory entry and should return a non-zero value if the directory entry is
to be included in the array. If select is null, then all the directory entries will be
The compar parameter is a pointer to a user supplied subroutine which is passed to
qsort(3) to sort the completed array. If this pointer is null, the array is not sorted.
Alphasort is a routine which can be used for the compar parameter to sort the array alpha-
The memory allocated for the array can be deallocated with free (see malloc(3)) by freeing
each pointer in the array and the array itself.
directory(3), malloc(3), qsort(3), dir(5)
Returns -1 if the directory cannot be opened for reading or if malloc(3) cannot allocate
enough memory to hold all the data structures.
4.2 Berkeley Distribution September 17, 1985 SCANDIR(3)
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