support/fcntl.c

   1 /*
   2  * <fcntl.h> wrapper functions.
   3  *
   4  * Authors:
   5  *   Jonathan Pryor (jonpryor@vt.edu)
   6  *
   7  * Copyright (C) 2004, 2006 Jonathan Pryor
   8  */
   9
  10 #ifndef _GNU_SOURCE
  11 #define _GNU_SOURCE
  12 #endif
  13
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16 #include <unistd.h>
  17 #include <fcntl.h>
  18 #include <errno.h>
  19
  20 #include "map.h"
  21 #include "mph.h"
  22
  23 G_BEGIN_DECLS
  24
  25 gint32
  26 Mono_Posix_Syscall_fcntl (gint32 fd, gint32 cmd)
  27 {
  28         if (Mono_Posix_FromFcntlCommand (cmd, &cmd) == -1)
  29                 return -1;
  30         return fcntl (fd, cmd);
  31 }
  32
  33 gint32
  34 Mono_Posix_Syscall_fcntl_arg (gint32 fd, gint32 cmd, gint64 arg)
  35 {
  36         long _arg;
  37         gint32 _cmd;
  38
  39         mph_return_if_long_overflow (arg);
  40
  41 #ifdef F_NOTIFY
  42         if (cmd == F_NOTIFY) {
  43                 int _argi;
  44                 if (Mono_Posix_FromDirectoryNotifyFlags (arg, &_argi) == -1) {
  45                         return -1;
  46                 }
  47                 _arg = _argi;
  48         }
  49         else
  50 #endif
  51                 _arg = (long) arg;
  52
  53         if (Mono_Posix_FromFcntlCommand (cmd, &_cmd) == -1)
  54                 return -1;
  55         return fcntl (fd, cmd, _arg);
  56 }
  57
  58 gint32
  59 Mono_Posix_Syscall_fcntl_lock (gint32 fd, gint32 cmd, struct Mono_Posix_Flock *lock)
  60 {
  61         struct flock _lock;
  62         int r;
  63
  64         if (lock == NULL) {
  65                 errno = EFAULT;
  66                 return -1;
  67         }
  68
  69         if (Mono_Posix_FromFlock (lock, &_lock) == -1)
  70                 return -1;
  71
  72         r = fcntl (fd, cmd, &_lock);
  73
  74         if (Mono_Posix_ToFlock (&_lock, lock) == -1)
  75                 return -1;
  76
  77         return r;
  78 }
  79
  80 gint32
  81 Mono_Posix_Syscall_open (const char *pathname, gint32 flags)
  82 {
  83         if (Mono_Posix_FromOpenFlags (flags, &flags) == -1)
  84                 return -1;
  85
  86         return open (pathname, flags);
  87 }
  88
  89 gint32
  90 Mono_Posix_Syscall_open_mode (const char *pathname, gint32 flags, guint32 mode)
  91 {
  92         if (Mono_Posix_FromOpenFlags (flags, &flags) == -1)
  93                 return -1;
  94         if (Mono_Posix_FromFilePermissions (mode, &mode) == -1)
  95                 return -1;
  96
  97         return open (pathname, flags, mode);
  98 }
  99
 100 gint32
 101 Mono_Posix_Syscall_creat (const char *pathname, guint32 mode)
 102 {
 103         if (Mono_Posix_FromFilePermissions (mode, &mode) == -1)
 104                 return -1;
 105
 106         return creat (pathname, mode);
 107 }
 108
 109 #ifdef HAVE_POSIX_FADVISE
 110 gint32
 111 Mono_Posix_Syscall_posix_fadvise (gint32 fd, mph_off_t offset, mph_off_t len,
 112         gint32 advice)
 113 {
 114         mph_return_if_off_t_overflow (offset);
 115         mph_return_if_off_t_overflow (len);
 116
 117         if (Mono_Posix_FromPosixFadviseAdvice (advice, &advice) == -1)
 118                 return -1;
 119
 120         return posix_fadvise (fd, (off_t) offset, (off_t) len, advice);
 121 }
 122 #endif /* ndef HAVE_POSIX_FADVISE */
 123
 124 #ifdef HAVE_POSIX_FALLOCATE
 125 gint32
 126 Mono_Posix_Syscall_posix_fallocate (gint32 fd, mph_off_t offset, mph_size_t len)
 127 {
 128         mph_return_if_off_t_overflow (offset);
 129         mph_return_if_size_t_overflow (len);
 130
 131         return posix_fallocate (fd, (off_t) offset, (size_t) len);
 132 }
 133 #endif /* ndef HAVE_POSIX_FALLOCATE */
 134
 135 G_END_DECLS
 136
 137 /*
 138  * vim: noexpandtab
 139  */