122 lines
2.0 KiB
C
122 lines
2.0 KiB
C
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/*
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* <dirent.h> wrapper functions.
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*
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* Authors:
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* Jonathan Pryor (jonpryor@vt.edu)
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*
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* Copyright (C) 2004-2005 Jonathan Pryor
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*/
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#include <dirent.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <unistd.h>
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#include "map.h"
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#include "mph.h"
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#if defined (PATH_MAX) && defined (NAME_MAX)
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#define MPH_PATH_MAX MAX(PATH_MAX, NAME_MAX)
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#elif defined (PATH_MAX)
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#define MPH_PATH_MAX PATH_MAX
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#elif defined (NAME_MAX)
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#define MPH_PATH_MAX NAME_MAX
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#else /* !defined PATH_MAX && !defined NAME_MAX */
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#define MPH_PATH_MAX 2048
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#endif
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G_BEGIN_DECLS
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#if HAVE_SEEKDIR
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gint32
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Mono_Posix_Syscall_seekdir (void *dir, mph_off_t offset)
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{
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mph_return_if_off_t_overflow (offset);
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seekdir ((DIR*) dir, (off_t) offset);
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return 0;
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}
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#endif /* def HAVE_SEEKDIR */
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#if HAVE_TELLDIR
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mph_off_t
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Mono_Posix_Syscall_telldir (void *dir)
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{
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return telldir ((DIR*) dir);
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}
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#endif /* def HAVE_TELLDIR */
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static void
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copy_dirent (struct Mono_Posix_Syscall__Dirent *to, struct dirent *from)
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{
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memset (to, 0, sizeof(*to));
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to->d_ino = from->d_ino;
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to->d_name = strdup (from->d_name);
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#ifdef HAVE_STRUCT_DIRENT_D_OFF
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to->d_off = from->d_off;
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#endif
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#ifdef HAVE_STRUCT_DIRENT_D_RECLEN
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to->d_reclen = from->d_reclen;
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#endif
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#ifdef HAVE_STRUCT_DIRENT_D_TYPE
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to->d_type = from->d_type;
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#endif
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}
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gint32
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Mono_Posix_Syscall_readdir (void *dirp, struct Mono_Posix_Syscall__Dirent *entry)
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{
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struct dirent *d;
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if (entry == NULL) {
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errno = EFAULT;
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return -1;
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}
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errno = 0;
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d = readdir (dirp);
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if (d == NULL) {
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return -1;
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}
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copy_dirent (entry, d);
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return 0;
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}
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gint32
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Mono_Posix_Syscall_readdir_r (void *dirp, struct Mono_Posix_Syscall__Dirent *entry, void **result)
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{
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struct dirent *_entry = malloc (sizeof (struct dirent) + MPH_PATH_MAX + 1);
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int r;
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r = readdir_r (dirp, _entry, (struct dirent**) result);
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if (r == 0 && *result != NULL) {
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copy_dirent (entry, _entry);
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}
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free (_entry);
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return r;
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}
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int
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Mono_Posix_Syscall_rewinddir (void* dir)
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{
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rewinddir (dir);
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return 0;
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}
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G_END_DECLS
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/*
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* vim: noexpandtab
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*/
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