9os

Experimental kernel using plan9 ideas for embedded device
git clone git://git.simple-cc.org/9os
Log | Files | Refs | README | LICENSE

opendir.c (422B)

      1 #include <errno.h>
      2 #include <string.h>
      3 
      4 #include <os9/io.h>
      5 
      6 #define NR_DIRS 12
      7 
      8 
      9 DIR *
     10 opendir(char *name)
     11 {
     12 	int fd;
     13 	DIR *dir;
     14 	static DIR dirs[NR_DIRS];
     15 
     16 	for (dir = dirs; dir < &dirs[NR_DIRS] && dir->fd; ++dir)
     17 		;
     18 
     19 	if (dir == &dirs[NR_DIRS]) {
     20 		errno = ENOMEM;
     21 		return NULL;
     22 	}
     23 
     24 	if ((fd = open(name, O_READ)) < 0)
     25 		return NULL;
     26 	dir->fd = fd;
     27 
     28 	/* TODO: check that it is actually a directory */
     29 
     30 	return dir;
     31 }