src/system/libroot/posix/unistd/directory.c

   1 /*
   2  * Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include <errno.h>
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10
  11 #include <errno_private.h>
  12 #include <syscalls.h>
  13 #include <syscall_utils.h>
  14
  15
  16 int
  17 chdir(const char *path)
  18 {
  19         RETURN_AND_SET_ERRNO(_kern_setcwd(-1, path));
  20 }
  21
  22
  23 int
  24 fchdir(int fd)
  25 {
  26         RETURN_AND_SET_ERRNO(_kern_setcwd(fd, NULL));
  27 }
  28
  29
  30 char *
  31 getcwd(char *buffer, size_t size)
  32 {
  33         bool allocated = false;
  34         status_t status;
  35
  36         if (buffer == NULL) {
  37                 buffer = malloc(size = PATH_MAX);
  38                 if (buffer == NULL) {
  39                         __set_errno(B_NO_MEMORY);
  40                         return NULL;
  41                 }
  42
  43                 allocated = true;
  44         }
  45
  46         status = _kern_getcwd(buffer, size);
  47         if (status < B_OK) {
  48                 if (allocated)
  49                         free(buffer);
  50
  51                 __set_errno(status);
  52                 return NULL;
  53         }
  54         return buffer;
  55 }
  56
  57
  58 int
  59 rmdir(const char *path)
  60 {
  61         RETURN_AND_SET_ERRNO(_kern_remove_dir(-1, path));
  62 }
  63