src/system/libroot/posix/fcntl.cpp

   1 /*
   2  * Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Copyright 2001, Manuel J. Petit. All rights reserved.
   6  * Distributed under the terms of the NewOS License.
   7  */
   8
   9
  10 #include <errno.h>
  11 #include <fcntl.h>
  12 #include <pthread.h>
  13 #include <stdarg.h>
  14 #include <unistd.h>
  15
  16 #include <errno_private.h>
  17 #include <syscalls.h>
  18 #include <syscall_utils.h>
  19 #include <umask.h>
  20
  21
  22 int
  23 creat(const char *path, mode_t mode)
  24 {
  25         RETURN_AND_SET_ERRNO_TEST_CANCEL(
  26                 _kern_open(-1, path, O_CREAT | O_TRUNC | O_WRONLY, mode & ~__gUmask));
  27                 // adapt the permissions as required by POSIX
  28 }
  29
  30
  31 int
  32 open(const char *path, int openMode, ...)
  33 {
  34         int perms = 0;
  35         if (openMode & O_CREAT) {
  36                 va_list args;
  37                 va_start(args, openMode);
  38                 perms = va_arg(args, int) & ~__gUmask;
  39                         // adapt the permissions as required by POSIX
  40                 va_end(args);
  41         }
  42
  43         RETURN_AND_SET_ERRNO_TEST_CANCEL(_kern_open(-1, path, openMode, perms));
  44 }
  45
  46
  47 int
  48 openat(int fd, const char *path, int openMode, ...)
  49 {
  50         int perms = 0;
  51         if (openMode & O_CREAT) {
  52                 va_list args;
  53                 va_start(args, openMode);
  54                 perms = va_arg(args, int) & ~__gUmask;
  55                         // adapt the permissions as required by POSIX
  56                 va_end(args);
  57         }
  58
  59         RETURN_AND_SET_ERRNO_TEST_CANCEL(_kern_open(fd, path, openMode, perms));
  60 }
  61
  62
  63 int
  64 fcntl(int fd, int op, ...)
  65 {
  66         va_list args;
  67         va_start(args, op);
  68         size_t argument = va_arg(args, size_t);
  69         va_end(args);
  70
  71         status_t error = _kern_fcntl(fd, op, argument);
  72
  73         if (op == F_SETLKW)
  74                 pthread_testcancel();
  75
  76         RETURN_AND_SET_ERRNO(error);
  77 }